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204
core/bus.c
View File

@ -3,73 +3,104 @@
/********************************* Constants *********************************/
/* Memory access address masks by data type */
static const uint32_t TYPE_MASKS[] = {
0x07FFFFFF, /* S8 */
0x07FFFFFF, /* U8 */
0x07FFFFFE, /* S16 */
0x07FFFFFE, /* U16 */
0x07FFFFFC /* S32 */
};
/*************************** Sub-Module Functions ****************************/
/***************************** Utility Functions *****************************/
/* Read a typed value from a buffer in host memory */
static int32_t busReadBuffer(uint8_t *data, int type) {
static int32_t busReadBuffer(
uint8_t *buffer, uint32_t size, uint32_t offset, int type) {
/* Processing by data type */
/* There is no data */
if (buffer == NULL)
return 0;
/* Mirror the buffer across its address range */
offset &= size - 1;
/* Processing by type */
switch (type) {
/* Generic implementation */
#ifndef VB_LITTLE_ENDIAN
case VB_S8 : return ((int8_t *)data)[0];
case VB_U8 : return data [0];
case VB_S16: return (int32_t) ((int8_t *)data)[1] << 8 | data[0];
case VB_U16: return (int32_t) data [1] << 8 | data[0];
case VB_S32: return
(int32_t) data[3] << 24 | (int32_t) data[2] << 16 |
(int32_t) data[1] << 8 | data[0];
case VB_S8 :
return (int8_t) buffer[offset];
case VB_U8:
return buffer[offset];
case VB_S16:
return (int32_t) (int8_t)
buffer[offset + 1] << 8 | buffer[offset];
case VB_U16:
offset &= 0xFFFFFFFE;
return (int32_t) (int8_t)
buffer[offset + 1] << 8 | buffer[offset];
case VB_S32:
offset &= 0xFFFFFFFC;
return
(int32_t) buffer[offset + 3] << 24 |
(int32_t) buffer[offset + 2] << 16 |
(int32_t) buffer[offset + 1] << 8 |
buffer[offset ]
;
/* Little-endian host */
/* Little-endian implementation */
#else
case VB_S8 : return *(int8_t *) data;
case VB_U8 : return * data;
case VB_S16: return *(int16_t *) data;
case VB_U16: return *(uint16_t *) data;
case VB_S32: return *(int32_t *) data;
case VB_S8 : return *(int8_t *)&buffer[offset ];
case VB_U8 : return buffer[offset ];
case VB_S16: return *(int16_t *)&buffer[offset & 0xFFFFFFFE];
case VB_U16: return *(uint16_t *)&buffer[offset & 0xFFFFFFFE];
case VB_S32: return *(int32_t *)&buffer[offset & 0xFFFFFFFC];
#endif
}
return 0; /* Unreachable */
/* Invalid type */
return 0;
}
/* Write a typed value to a buffer in host memory */
static void busWriteBuffer(uint8_t *data, int type, int32_t value) {
static void busWriteBuffer(
uint8_t *buffer, uint32_t size, uint32_t offset, int type, int32_t value) {
/* Processing by data type */
/* There is no data */
if (buffer == NULL)
return;
/* Mirror the buffer across its address range */
offset &= size - 1;
/* Processing by type */
switch (type) {
/* Generic implementation */
#ifndef VB_LITTLE_ENDIAN
case VB_S32: data[3] = value >> 24;
data[2] = value >> 16; /* Fallthrough */
case VB_S16: /* Fallthrough */
case VB_U16: data[1] = value >> 8; /* Fallthrough */
case VB_S8 : /* Fallthrough */
case VB_U8 : data[0] = value;
case VB_S32:
offset &= 0xFFFFFFFC;
buffer[offset ] = value;
buffer[offset + 1] = value >> 8;
buffer[offset + 2] = value >> 16;
buffer[offset + 3] = value >> 24;
break;
case VB_S16:
case VB_U16:
offset &= 0xFFFFFFFE;
buffer[offset ] = value;
buffer[offset + 1] = value >> 8;
break;
case VB_S8 :
case VB_U8 :
buffer[offset ] = value;
/* Little-endian host */
/* Little-endian implementation */
#else
case VB_S8 : /* Fallthrough */
case VB_U8 : * data = value; return;
case VB_S16: /* Fallthrough */
case VB_U16: *(uint16_t *) data = value; return;
case VB_S32: *(int32_t *) data = value; return;
case VB_S8 :
case VB_U8 :
buffer[offset ] = value;
break;
case VB_S16:
case VB_U16:
*(int16_t *)&buffer[offset & 0xFFFFFFFE] = value;
break;
case VB_S32:
*(int32_t *)&buffer[offset & 0xFFFFFFFC] = value;
#endif
}
@ -78,79 +109,54 @@ static void busWriteBuffer(uint8_t *data, int type, int32_t value) {
/***************************** Library Functions *****************************/
/***************************** Module Functions ******************************/
/* Read a typed value from the simulation bus */
static void busRead(VB *sim, uint32_t address, int type, int32_t *value) {
/* Working variables */
address &= TYPE_MASKS[type];
*value = 0;
/* Process by address range */
switch (address >> 24) {
case 0: break; /* VIP */
case 1: break; /* VSU */
case 2: break; /* Misc. I/O */
case 3: break; /* Unmapped */
case 4: break; /* Game Pak expansion */
case 5: /* WRAM */
*value = busReadBuffer(&sim->wram[address & 0x0000FFFF], type);
break;
case 6: /* Game Pak RAM */
if (sim->cart.ram != NULL) {
*value = busReadBuffer(
&sim->cart.ram[address & sim->cart.ramMask], type);
}
break;
case 7: /* Game Pak ROM */
if (sim->cart.rom != NULL) {
*value = busReadBuffer(
&sim->cart.rom[address & sim->cart.romMask], type);
}
break;
static int32_t busRead(VB *sim, uint32_t address, int type) {
/* Processing by address region */
switch (address >> 24 & 7) {
case 0: return 0; /* VIP */
case 1: return 0; /* VSU */
case 2: return 0; /* Misc. hardware */
case 3: return 0; /* Unmapped */
case 4: return 0; /* Game pak expansion */
case 5: return /* WRAM */
busReadBuffer(sim->wram , 0x10000 , address, type);
case 6: return /* Game pak RAM */
busReadBuffer(sim->cart.ram, sim->cart.ramSize, address, type);
case 7: return /* Game pak ROM */
busReadBuffer(sim->cart.rom, sim->cart.romSize, address, type);
}
/* Unreachable */
return 0;
}
/* Write a typed value to the simulation bus */
static void busWrite(VB*sim,uint32_t address,int type,int32_t value,int debug){
(void) debug;
/* Working variables */
address &= TYPE_MASKS[type];
/* Process by address range */
switch (address >> 24) {
/* Processing by address region */
switch (address >> 24 & 7) {
case 0: break; /* VIP */
case 1: break; /* VSU */
case 2: break; /* Misc. I/O */
case 2: break; /* Misc. hardware */
case 3: break; /* Unmapped */
case 4: break; /* Game Pak expansion */
case 5: /* WRAM */
busWriteBuffer(&sim->wram[address & 0x0000FFFF], type, value);
case 4: break; /* Game pak expansion */
case 5: /* WRAM */
busWriteBuffer(sim->wram ,0x10000 ,address,type,value);
break;
case 6: /* Game Pak RAM */
if (sim->cart.ram != NULL) {
busWriteBuffer(
&sim->cart.ram[address & sim->cart.ramMask], type, value);
}
case 6: /* Game pak RAM */
busWriteBuffer(sim->cart.ram,sim->cart.ramSize,address,type,value);
break;
case 7: /* Game Pak ROM */
if (debug && sim->cart.rom != NULL) {
busWriteBuffer(
&sim->cart.rom[address & sim->cart.romMask], type, value);
}
case 7: /* Game pak ROM */
busWriteBuffer(sim->cart.rom,sim->cart.romSize,address,type,value);
break;
}
}
#endif /* VBAPI */

3274
core/cpu.c
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File diff suppressed because it is too large Load Diff

489
core/vb.c
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@ -1,129 +1,41 @@
#ifndef VBAPI
#define VBAPI
#endif
#include <float.h>
#include <vb.h>
/*********************************** Types ***********************************/
/***************************** Utility Functions *****************************/
/* Simulation state */
struct VB {
/* Game Pak */
struct {
uint8_t *ram; /* Save RAM */
uint8_t *rom; /* Program ROM */
uint32_t ramMask; /* Size of SRAM - 1 */
uint32_t romMask; /* Size of ROM - 1 */
} cart;
/* CPU */
struct {
/* Cache Control Word */
struct {
uint8_t ice; /* Instruction Cache Enable */
} chcw;
/* Exception Cause Register */
struct {
uint16_t eicc; /* Exception/Interrupt Cause Code */
uint16_t fecc; /* Fatal Error Cause Code */
} ecr;
/* Program Status Word */
struct {
uint8_t ae; /* Address Trap Enable */
uint8_t cy; /* Carry */
uint8_t ep; /* Exception Pending */
uint8_t fiv; /* Floating Invalid */
uint8_t fov; /* Floating Overflow */
uint8_t fpr; /* Floading Precision */
uint8_t fro; /* Floating Reserved Operand */
uint8_t fud; /* Floading Underflow */
uint8_t fzd; /* Floating Zero Divide */
uint8_t i; /* Interrupt Level */
uint8_t id; /* Interrupt Disable */
uint8_t np; /* NMI Pending */
uint8_t ov; /* Overflow */
uint8_t s; /* Sign */
uint8_t z; /* Zero */
} psw;
/* Other registers */
uint32_t adtre; /* Address Trap Register for Execution */
uint32_t eipc; /* Exception/Interrupt PC */
uint32_t eipsw; /* Exception/Interrupt PSW */
uint32_t fepc; /* Fatal Error PC */
uint32_t fepsw; /* Fatal Error PSW */
uint32_t pc; /* Program Counter */
int32_t program[32]; /* Program registers */
uint32_t sr29; /* System register 29 */
uint32_t sr31; /* System register 31 */
/* Working data */
union {
struct {
uint32_t dest;
uint64_t src;
} bs; /* Arithmetic bit strings */
struct {
uint32_t address;
int32_t value;
} data; /* Data accesses */
} aux;
/* Other state */
uint32_t clocks; /* Master clocks to wait */
uint16_t code[2]; /* Instruction code units */
uint16_t exception; /* Exception cause code */
int halt; /* CPU is halting */
uint16_t irq; /* Interrupt request lines */
int length; /* Instruction code length */
uint32_t nextPC; /* Address of next instruction */
int operation; /* Current operation ID */
int step; /* Operation sub-task ID */
} cpu;
/* Other system state */
uint8_t wram[0x10000]; /* System RAM */
/* Application data */
vbOnException onException; /* CPU exception */
vbOnExecute onExecute; /* CPU instruction execute */
vbOnFetch onFetch; /* CPU instruction fetch */
vbOnRead onRead; /* CPU instruction read */
vbOnWrite onWrite; /* CPU instruction write */
void *tag; /* User data */
};
/***************************** Library Functions *****************************/
/* Sign-extend an integer of variable width */
static int32_t SignExtend(int32_t value, int32_t bits) {
#ifndef VB_SIGNED_PROPAGATE
value &= ~((uint32_t) 0xFFFFFFFF << bits);
bits = (int32_t) 1 << (bits - (int32_t) 1);
return (value ^ bits) - bits;
#else
return value << (32 - bits) >> (32 - bits);
#endif
/* Select the lesser of two unsigned numbers */
static uint32_t Min(uint32_t a, uint32_t b) {
return a < b ? a : b;
}
/* Sign-extend an integer, masking upper bits if positive */
#ifndef VB_SIGNED_PROPAGATE
/* Generic implementation */
static int32_t SignExtend(int32_t value, int bits) {
return value & 1 << (bits - 1) ?
value | ~0 << bits :
value & ((1 << bits) - 1)
;
}
#else
/* Sign-propagating implementation */
#define SignExtend(v, b) ((int32_t) (v) << (32 - (b)) >> (32 - (b)))
#endif
/******************************** Sub-Modules ********************************/
/**************************** Sub-Module Imports *****************************/
#include "bus.c"
#include "cpu.c"
/***************************** Library Functions *****************************/
/***************************** Module Functions ******************************/
/* Process a simulation for a given number of clocks */
static int sysEmulate(VB *sim, uint32_t clocks) {
@ -132,7 +44,7 @@ static int sysEmulate(VB *sim, uint32_t clocks) {
;
}
/* Determine how many clocks are guaranteed to process */
/* Determine how many clocks can be simulated without a breakpoint */
static uint32_t sysUntil(VB *sim, uint32_t clocks) {
clocks = cpuUntil(sim, clocks);
return clocks;
@ -140,140 +52,127 @@ static uint32_t sysUntil(VB *sim, uint32_t clocks) {
/******************************* API Commands ********************************/
/************************************ API ************************************/
/* Process one simulation */
VBAPI int vbEmulate(VB *sim, uint32_t *clocks) {
int brk; /* A callback requested a break */
uint32_t until; /* Clocks guaranteed to process */
while (*clocks != 0) {
until = sysUntil(sim, *clocks);
brk = sysEmulate(sim, until);
*clocks -= until;
if (brk)
return brk; /* TODO: return 1 */
/* Process a simulation */
int vbEmulate(VB *sim, uint32_t *clocks) {
int brk; /* A break was requested */
uint32_t until; /* Number of clocks during which no break will occur */
/* Process all clocks */
for (brk = 0; *clocks != 0 && !brk; *clocks -= until) {
until = sysUntil (sim, *clocks);
brk = sysEmulate(sim, until );
}
return 0;
return brk;
}
/* Process multiple simulations */
VBAPI int vbEmulateEx(VB **sims, int count, uint32_t *clocks) {
int brk; /* A callback requested a break */
uint32_t until; /* Clocks guaranteed to process */
int vbEmulateEx(VB **sims, int count, uint32_t *clocks) {
int brk; /* A break was requested */
uint32_t until; /* Number of clocks during which no break will occur */
int x; /* Iterator */
while (*clocks != 0) {
/* Process all clocks */
for (brk = 0; *clocks != 0 && !brk; *clocks -= until) {
until = *clocks;
for (x = count - 1; x >= 0; x--)
until = sysUntil(sims[x], until);
brk = 0;
for (x = count - 1; x >= 0; x--)
brk |= sysEmulate(sims[x], until);
*clocks -= until;
if (brk)
return brk; /* TODO: return 1 */
for (x = 0; x < count; x++)
until = sysUntil (sims[x], until);
for (x = 0; x < count; x++)
brk |= sysEmulate(sims[x], until);
}
return 0;
return brk;
}
/* Retrieve the game pack RAM buffer */
VBAPI void* vbGetCartRAM(VB *sim, uint32_t *size) {
if (size != NULL)
*size = sim->cart.ram == NULL ? 0 : sim->cart.ramMask + 1;
return sim->cart.ram;
/* Retrieve a current breakpoint handler */
void* vbGetCallback(VB *sim, int id) {
switch (id) {
case VB_ONEXCEPTION: return *(void **)&sim->onException;
case VB_ONEXECUTE : return *(void **)&sim->onExecute;
case VB_ONFETCH : return *(void **)&sim->onFetch;
case VB_ONREAD : return *(void **)&sim->onRead;
case VB_ONWRITE : return *(void **)&sim->onWrite;
}
return NULL;
}
/* Retrieve the game pack ROM buffer */
VBAPI void* vbGetCartROM(VB *sim, uint32_t *size) {
/* Retrieve the value of a register */
int32_t vbGetRegister(VB *sim, int type, int id) {
switch (type) {
case VB_PROGRAM:
return id < 0 || id > 31 ? 0 : sim->cpu.program[id];
case VB_SYSTEM:
return cpuGetSystemRegister(sim, id);
case VB_OTHER:
switch (id) {
case VB_PC: return sim->cpu.pc;
}
}
return 0; /* Invalid type */
}
/* Retrieve a handle to the current cartridge ROM data */
uint8_t* vbGetROM(VB *sim, uint32_t *size) {
if (size != NULL)
*size = sim->cart.rom == NULL ? 0 : sim->cart.romMask + 1;
*size = sim->cart.romSize;
return sim->cart.rom;
}
/* Retrieve the exception callback handle */
VBAPI vbOnException vbGetExceptionCallback(VB *sim) {
return sim->onException;
/* Retrieve a handle to the current cartridge RAM data */
uint8_t* vbGetSRAM(VB *sim, uint32_t *size) {
if (size != NULL)
*size = sim->cart.ramSize;
return sim->cart.ram;
}
/* Retrieve the execute callback handle */
VBAPI vbOnExecute vbGetExecuteCallback(VB *sim) {
return sim->onExecute;
}
/* Prepare a simulation instance for use */
void vbInit(VB *sim) {
/* Retrieve the fetch callback handle */
VBAPI vbOnFetch vbGetFetchCallback(VB *sim) {
return sim->onFetch;
}
/* Breakpoint handlers */
sim->onException = NULL;
sim->onExecute = NULL;
sim->onFetch = NULL;
sim->onRead = NULL;
sim->onWrite = NULL;
/* Retrieve the value of the program counter */
VBAPI uint32_t vbGetProgramCounter(VB *sim) {
return sim->cpu.pc;
}
/* Game pak */
sim->cart.ram = NULL;
sim->cart.ramSize = 0;
sim->cart.rom = NULL;
sim->cart.romSize = 0;
/* Retrieve the value in a program register */
VBAPI int32_t vbGetProgramRegister(VB *sim, int index) {
return index < 1 || index > 31 ? 0 : sim->cpu.program[index];
}
/* Retrieve the read callback handle */
VBAPI vbOnRead vbGetReadCallback(VB *sim) {
return sim->onRead;
}
/* Retrieve the value in a system register */
VBAPI uint32_t vbGetSystemRegister(VB *sim, int index) {
return index < 0 || index > 31 ? 0 : cpuGetSystemRegister(sim, index);
}
/* Retrieve a simulation's userdata pointer */
VBAPI void* vbGetUserData(VB *sim) {
return sim->tag;
}
/* Retrieve the write callback handle */
VBAPI vbOnWrite vbGetWriteCallback(VB *sim) {
return sim->onWrite;
}
/* Initialize a simulation instance */
VBAPI VB* vbInit(VB *sim) {
sim->cart.ram = NULL;
sim->cart.rom = NULL;
sim->onExecute = NULL;
sim->onFetch = NULL;
sim->onRead = NULL;
sim->onWrite = NULL;
/* Hardware reset */
vbReset(sim);
return sim;
}
/* Read a value from the memory bus */
VBAPI int32_t vbRead(VB *sim, uint32_t address, int type) {
int32_t value;
if (type < 0 || type > 4)
return 0;
busRead(sim, address, type, &value);
return value;
/* Read a value from memory */
int32_t vbRead(VB *sim, uint32_t address, int type) {
return busRead(sim, address, type);
}
/* Read multiple bytes from memory */
void vbReadEx(VB *sim, uint32_t address, uint8_t *buffer, uint32_t length) {
while (length--) *buffer++ = busRead(sim, address++, VB_U8);
}
/* Simulate a hardware reset */
VBAPI VB* vbReset(VB *sim) {
uint32_t x; /* Iterator */
void vbReset(VB *sim) {
int x; /* Iterator */
/* WRAM (the hardware does not do this) */
/* Reset WRAM (the hardware does not do this) */
for (x = 0; x < 0x10000; x++)
sim->wram[x] = 0x00;
/* CPU (normal) */
sim->cpu.exception = 0;
sim->cpu.halt = 0;
sim->cpu.irq = 0;
sim->cpu.pc = 0xFFFFFFF0;
sim->cpu.pc = 0xFFFFFFF0;
cpuSetSystemRegister(sim, VB_ECR, 0x0000FFF0, 1);
cpuSetSystemRegister(sim, VB_PSW, 0x00008000, 1);
for (x = 0; x < 5; x++)
sim->cpu.irq[x] = 0;
/* CPU (extra, hardware does not do this) */
/* CPU (extra, hardware doesn't do this) */
sim->cpu.adtre = 0x00000000;
sim->cpu.eipc = 0x00000000;
sim->cpu.eipsw = 0x00000000;
@ -285,107 +184,99 @@ VBAPI VB* vbReset(VB *sim) {
for (x = 0; x < 32; x++)
sim->cpu.program[x] = 0x00000000;
/* CPU (other) */
/* CPU (internal) */
sim->cpu.bitstring = 0;
sim->cpu.clocks = 0;
sim->cpu.nextPC = 0xFFFFFFF0;
sim->cpu.operation = CPU_FETCH;
sim->cpu.exception = 0;
sim->cpu.stage = CPU_FETCH;
sim->cpu.step = 0;
return sim;
}
/* Specify a game pak RAM buffer */
VBAPI int vbSetCartRAM(VB *sim, void *sram, uint32_t size) {
if (sram != NULL) {
if (size < 16 || size > 0x1000000 || (size & (size - 1)) != 0)
return 1;
sim->cart.ramMask = size - 1;
/* Specify a breakpoint handler */
void* vbSetCallback(VB *sim, int id, void *proc) {
void *prev = vbGetCallback(sim, id);
switch (id) {
case VB_ONEXCEPTION: *(void **)&sim->onException = proc; break;
case VB_ONEXECUTE : *(void **)&sim->onExecute = proc; break;
case VB_ONFETCH : *(void **)&sim->onFetch = proc; break;
case VB_ONREAD : *(void **)&sim->onRead = proc; break;
case VB_ONWRITE : *(void **)&sim->onWrite = proc; break;
}
sim->cart.ram = sram;
return 0;
return prev;
}
/* Specify a game pak ROM buffer */
VBAPI int vbSetCartROM(VB *sim, void *rom, uint32_t size) {
if (rom != NULL) {
if (size < 16 || size > 0x1000000 || (size & (size - 1)) != 0)
return 1;
sim->cart.romMask = size - 1;
/* Specify a value for a register */
int32_t vbSetRegister(VB *sim, int type, int id, int32_t value) {
switch (type) {
case VB_PROGRAM:
return id < 1 || id > 31 ? 0 : (sim->cpu.program[id] = value);
case VB_SYSTEM:
return cpuSetSystemRegister(sim, id, value, 1);
case VB_OTHER:
switch (id) {
case VB_PC:
sim->cpu.bitstring = 0;
sim->cpu.clocks = 0;
sim->cpu.exception = 0;
sim->cpu.stage = CPU_FETCH;
return sim->cpu.pc = value & 0xFFFFFFFE;
}
}
sim->cart.rom = rom;
return 0;
return 0; /* Invalid type or ID */
}
/* Specify a new exception callback handle */
VBAPI vbOnException vbSetExceptionCallback(VB *sim, vbOnException callback) {
vbOnException prev = sim->onException;
sim->onException = callback;
return prev;
}
/* Specify a cartridge ROM buffer */
int vbSetROM(VB *sim, uint8_t *data, uint32_t size) {
/* Specify a new execute callback handle */
VBAPI vbOnExecute vbSetExecuteCallback(VB *sim, vbOnExecute callback) {
vbOnExecute prev = sim->onExecute;
sim->onExecute = callback;
return prev;
}
/* Specify a new fetch callback handle */
VBAPI vbOnFetch vbSetFetchCallback(VB *sim, vbOnFetch callback) {
vbOnFetch prev = sim->onFetch;
sim->onFetch = callback;
return prev;
}
/* Specify a new value for the program counter */
VBAPI uint32_t vbSetProgramCounter(VB *sim, uint32_t value) {
sim->cpu.operation = CPU_FETCH;
sim->cpu.pc = sim->cpu.nextPC = value & 0xFFFFFFFE;
sim->cpu.step = 0;
return sim->cpu.pc;
}
/* Specify a new value for a program register */
VBAPI int32_t vbSetProgramRegister(VB *sim, int index, int32_t value) {
return index < 1 || index > 31 ? 0 : (sim->cpu.program[index] = value);
}
/* Specify a new read callback handle */
VBAPI vbOnRead vbSetReadCallback(VB *sim, vbOnRead callback) {
vbOnRead prev = sim->onRead;
sim->onRead = callback;
return prev;
}
/* Specify a new value for a system register */
VBAPI uint32_t vbSetSystemRegister(VB *sim, int index, uint32_t value) {
return index < 0 || index > 31 ? 0 :
cpuSetSystemRegister(sim, index, value, 1);
}
/* Specify a new write callback handle */
VBAPI vbOnWrite vbSetWriteCallback(VB *sim, vbOnWrite callback) {
vbOnWrite prev = sim->onWrite;
sim->onWrite = callback;
return prev;
}
/* Determine the size of a simulation instance */
VBAPI size_t vbSizeOf() {
return sizeof (VB);
}
/* Specify a simulation's userdata pointer */
VBAPI void* vbSetUserData(VB *sim, void *tag) {
void *prev = sim->tag;
sim->tag = tag;
return prev;
}
/* Write a value to the memory bus */
VBAPI int32_t vbWrite(VB *sim, uint32_t address, int type, int32_t value) {
if (type < 0 || type > 4)
/* Specifying no ROM */
if (data == NULL) {
sim->cart.rom = NULL;
sim->cart.romSize = 0;
return 0;
busWrite(sim, address, type, value, 1);
return vbRead(sim, address, type);
}
/* Error checking */
if (
size < 4 ||
size > 0x1000000 ||
(size & (size - 1)) /* Power of 2 */
) return 1;
/* Register the ROM data */
sim->cart.rom = data;
sim->cart.romSize = size;
return 0;
}
/* Specify a cartridge RAM buffer */
int vbSetSRAM(VB *sim, uint8_t *data, uint32_t size) {
/* Specifying no SRAM */
if (data == NULL) {
sim->cart.ram = NULL;
sim->cart.ramSize = 0;
return 0;
}
/* Error checking */
if (
size < 4 ||
size > 0x1000000 ||
(size & (size - 1)) /* Power of 2 */
) return 1;
/* Register the SRAM data */
sim->cart.ram = data;
sim->cart.ramSize = size;
return 0;
}
/* Write a value to memory */
void vbWrite(VB *sim, uint32_t address, int type, int32_t value) {
busWrite(sim, address, type, value, 1);
}
/* Write multiple values to memory */
void vbWriteEx(VB *sim, uint32_t address, uint8_t *buffer, uint32_t length) {
while (length--) busWrite(sim, address++, VB_U8, *buffer++, 1);
}

222
core/vb.h
View File

@ -15,15 +15,38 @@ extern "C" {
/**************************** Compilation Control ****************************/
/*
VB_LITTLE_ENDIAN
Accelerates simulated memory reads and writes on hosts with little-endian
byte ordering. If left undefined, a generic implementation is used instead.
*/
/*
VB_SIGNED_PROPAGATE
Accelerates sign extension by assuming the >> operator propagates the sign
bit for signed types and does not for unsigned types. If left undefined, a
generic implementation is used instead.
*/
/********************************* Constants *********************************/
/* Callback IDs */
#define VB_EXCEPTION 0
#define VB_EXECUTE 1
#define VB_FETCH 2
#define VB_FRAME 3
#define VB_READ 4
#define VB_WRITE 5
/* Data types */
#define VB_S8 0
#define VB_U8 1
#define VB_S16 2
#define VB_U16 3
#define VB_S32 4
/* Register types */
#define VB_PROGRAM 0
#define VB_SYSTEM 1
#define VB_OTHER 2
/* System registers */
#define VB_ADTRE 25
@ -37,62 +60,157 @@ extern "C" {
#define VB_PSW 5
#define VB_TKCW 7
/* Memory access data types */
#define VB_S8 0
#define VB_U8 1
#define VB_S16 2
#define VB_U16 3
#define VB_S32 4
/* Other registers */
#define VB_PC 0
/* Callbacks */
#define VB_ONEXCEPTION 0
#define VB_ONEXECUTE 1
#define VB_ONFETCH 2
#define VB_ONREAD 3
#define VB_ONWRITE 4
/*********************************** Types ***********************************/
/* Simulation state */
/* Forward references */
typedef struct VB VB;
/* Callbacks */
typedef int (*vbOnException)(VB *sim, uint16_t *cause);
typedef int (*vbOnExecute )(VB *sim, uint32_t address, const uint16_t *code, int length);
typedef int (*vbOnFetch )(VB *sim, int fetch, uint32_t address, int32_t *value, uint32_t *cycles);
typedef int (*vbOnRead )(VB *sim, uint32_t address, int type, int32_t *value, uint32_t *cycles);
typedef int (*vbOnWrite )(VB *sim, uint32_t address, int type, int32_t *value, uint32_t *cycles, int *cancel);
/* Memory access descriptor */
typedef struct {
uint32_t address; /* Memory address */
uint32_t clocks; /* Number of clocks taken */
int32_t value; /* Data loaded/to store */
uint8_t type; /* Data type */
} VBAccess;
/* Exception descriptor */
typedef struct {
uint32_t address; /* Memory address of handler routine */
uint16_t code; /* Cause code */
uint8_t cancel; /* Set to cancel the exception */
} VBException;
/* Instruction descriptor */
typedef struct {
uint32_t address; /* Memory address */
uint16_t code[2]; /* Fetched code units */
uint8_t size; /* Size in halfwords */
} VBInstruction;
/* Breakpoint handlers */
typedef int (*VBExceptionProc)(VB *, VBException *);
typedef int (*VBExecuteProc )(VB *, VBInstruction *);
typedef int (*VBFetchProc )(VB *, int, VBAccess *);
typedef int (*VBMemoryProc )(VB *, VBAccess *);
/* Simulation state */
struct VB {
/* Game pak */
struct {
uint8_t *ram; /* (S)RAM data */
uint8_t *rom; /* ROM data */
uint32_t ramSize; /* Size of RAM in bytes */
uint32_t romSize; /* Size of ROM in bytes */
} cart;
/* CPU */
struct {
/* Main registers */
int32_t program[32]; /* Program registers */
uint32_t pc; /* Program counter */
/* System registers */
uint32_t adtre; /* Address trap target address */
uint32_t eipc; /* Exception return PC */
uint32_t eipsw; /* Exception return PSW */
uint32_t fepc; /* Duplexed exception return PC */
uint32_t fepsw; /* Duplexed exception return PSW */
uint32_t sr29; /* System register 29 */
uint32_t sr31; /* System register 31 */
/* Exception cause register */
struct {
uint16_t eicc; /* Exception/interrupt cause code */
uint16_t fecc; /* Duplexed exception cause code */
} ecr;
/* Cache control word */
struct {
uint8_t ice; /* Instruction cache enable */
} chcw;
/* Program status word */
struct {
uint8_t ae; /* Address trap enable */
uint8_t cy; /* Carry */
uint8_t ep; /* Exception pending */
uint8_t fiv; /* Floating-point invalid operation */
uint8_t fov; /* Floating-point overflow */
uint8_t fpr; /* Floating point precision degradation */
uint8_t fro; /* Floating-point reserved operand */
uint8_t fud; /* Floating-point underflow */
uint8_t fzd; /* Floating-point zero division */
uint8_t i; /* Interrupt level */
uint8_t id; /* Interrupt disable */
uint8_t np; /* Duplexed exception pending */
uint8_t ov; /* Overflow */
uint8_t s; /* Sign */
uint8_t z; /* Zero */
} psw;
/* Instruction */
struct {
int32_t aux[9]; /* Auxiliary storage */
void *def; /* Operation descriptor */
uint16_t code[2]; /* Fetched code units */
uint8_t size; /* Size in bytes */
} inst;
/* Other state */
uint32_t clocks; /* Clocks until next activity */
uint32_t fpFlags; /* Floating-point exception flags */
uint16_t exception; /* Current exception cause code */
uint8_t irq[5]; /* Interrupt requests */
uint8_t bitstring; /* Processing a bit string instruction */
uint8_t stage; /* Pipeline stage handler */
uint8_t step; /* General processing step index */
} cpu;
/* Breakpoint hooks */
VBExceptionProc onException; /* Exception raised */
VBExecuteProc onExecute; /* Instruction execute */
VBFetchProc onFetch; /* Bus read (fetch) */
VBMemoryProc onRead; /* Bus read (execute) */
VBMemoryProc onWrite; /* Bus write */
/* Other state */
uint8_t wram[0x10000]; /* System memory */
};
/************************************ API ************************************/
/******************************* API Commands ********************************/
VBAPI int vbEmulate (VB *sim, uint32_t *clocks);
VBAPI int vbEmulateEx (VB **sims, int count, uint32_t *clocks);
VBAPI void* vbGetCallback (VB *sim, int id);
VBAPI void* vbGetCartRAM (VB *sim, uint32_t *size);
VBAPI void* vbGetCartROM (VB *sim, uint32_t *size);
VBAPI vbOnException vbGetExceptionCallback(VB *sim);
VBAPI vbOnExecute vbGetExecuteCallback (VB *sim);
VBAPI vbOnFetch vbGetFetchCallback (VB *sim);
VBAPI uint32_t vbGetProgramCounter (VB *sim);
VBAPI int32_t vbGetProgramRegister (VB *sim, int index);
VBAPI vbOnRead vbGetReadCallback (VB *sim);
VBAPI uint32_t vbGetSystemRegister (VB *sim, int index);
VBAPI void* vbGetUserData (VB *sim);
VBAPI vbOnWrite vbGetWriteCallback (VB *sim);
VBAPI VB* vbInit (VB *sim);
VBAPI int32_t vbRead (VB *sim, uint32_t address, int type);
VBAPI VB* vbReset (VB *sim);
VBAPI int vbSetCartRAM (VB *sim, void *sram, uint32_t size);
VBAPI int vbSetCartROM (VB *sim, void *rom, uint32_t size);
VBAPI vbOnException vbSetExceptionCallback(VB *sim, vbOnException callback);
VBAPI vbOnExecute vbSetExecuteCallback (VB *sim, vbOnExecute callback);
VBAPI vbOnFetch vbSetFetchCallback (VB *sim, vbOnFetch callback);
VBAPI uint32_t vbSetProgramCounter (VB *sim, uint32_t value);
VBAPI int32_t vbSetProgramRegister (VB *sim, int index, int32_t value);
VBAPI vbOnRead vbSetReadCallback (VB *sim, vbOnRead callback);
VBAPI uint32_t vbSetSystemRegister (VB *sim, int index, uint32_t value);
VBAPI void* vbSetUserData (VB *sim, void *tag);
VBAPI vbOnWrite vbSetWriteCallback (VB *sim, vbOnWrite callback);
VBAPI size_t vbSizeOf ();
VBAPI int32_t vbWrite (VB *sim, uint32_t address, int type, int32_t value);
VBAPI int vbEmulate (VB *sim, uint32_t *clocks);
VBAPI int vbEmulateEx (VB **sims, int count, uint32_t *clocks);
VBAPI void* vbGetCallback(VB *sim, int id);
VBAPI int32_t vbGetRegister(VB *sim, int type, int id);
VBAPI uint8_t* vbGetROM (VB *sim, uint32_t *size);
VBAPI uint8_t* vbGetSRAM (VB *sim, uint32_t *size);
VBAPI void vbInit (VB *sim);
VBAPI int32_t vbRead (VB *sim, uint32_t address, int type);
VBAPI void vbReadEx (VB *sim, uint32_t address, uint8_t *buffer, uint32_t length);
VBAPI void vbReset (VB *sim);
VBAPI void* vbSetCallback(VB *sim, int id, void *proc);
VBAPI int32_t vbSetRegister(VB *sim, int type, int id, int32_t value);
VBAPI int vbSetROM (VB *sim, uint8_t *data, uint32_t size);
VBAPI int vbSetSRAM (VB *sim, uint8_t *data, uint32_t size);
VBAPI void vbWrite (VB *sim, uint32_t address, int type, int32_t value);
VBAPI void vbWriteEx (VB *sim, uint32_t address, uint8_t *buffer, uint32_t length);

2
license.txt
View File

@ -1,4 +1,4 @@
Copyright (C) 2024 Guy Perfect
Copyright (C) 2023 Guy Perfect
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages

6
makefile
View File

@ -1,7 +1,7 @@
.PHONY: help
help:
@echo
@echo "Virtual Boy Emulator - October 10, 2024"
@echo "Virtual Boy Emulator - March 12, 2023"
@echo
@echo "Target build environment is any Debian with the following packages:"
@echo " emscripten"
@ -41,14 +41,14 @@ core:
# GCC compilation control
@gcc core/vb.c -I core -c -o /dev/null \
-Werror -std=c90 -Wall -Wextra -Wpedantic \
-D VB_LITTLE_ENDIAN -D VB_SIGNED_PROPAGATE -D VB_DIV_GENERIC
-D VB_LITTLE_ENDIAN -D VB_SIGNED_PROPAGATE
# Clang generic
@emcc core/vb.c -I core -c -o /dev/null \
-Werror -std=c90 -Wall -Wextra -Wpedantic
# Clang compilation control
@emcc core/vb.c -I core -c -o /dev/null \
-Werror -std=c90 -Wall -Wextra -Wpedantic \
-D VB_LITTLE_ENDIAN -D VB_SIGNED_PROPAGATE -D VB_DIV_GENERIC
-D VB_LITTLE_ENDIAN -D VB_SIGNED_PROPAGATE
.PHONY: wasm
wasm:

691
web/App.js Normal file
View File

@ -0,0 +1,691 @@
import { Core } from /**/"./core/Core.js";
import { Debugger } from /**/"./debugger/Debugger.js";
import { Disassembler } from /**/"./core/Disassembler.js";
import { Toolkit } from /**/"./toolkit/Toolkit.js";
// Front-end emulator application
class App extends Toolkit.App {
///////////////////////// Initialization Methods //////////////////////////
constructor(bundle) {
super({
style: {
display : "grid",
gridTemplateRows: "max-content auto"
},
visibility: true,
visible : false
});
// Configure instance fields
this.bundle = bundle;
this.debugMode = true;
this.dualMode = false;
this.text = null;
}
async init() {
// Theme
Object.assign(document.body.style, { margin:"0", overflow:"hidden" });
this.stylesheet(/**/"web/theme/kiosk.css", false);
this.stylesheet(/**/"web/theme/vbemu.css", false);
this._theme = "auto";
this.themes = {
dark : this.stylesheet(/**/"web/theme/dark.css" ),
light : this.stylesheet(/**/"web/theme/light.css" ),
virtual: this.stylesheet(/**/"web/theme/virtual.css")
};
// Watch for dark mode preference changes
this.isDark = window.matchMedia("(prefers-color-scheme: dark)");
this.isDark.addEventListener("change", e=>this.onDark());
this.onDark();
// Locales
await this.addLocale(/**/"web/locale/en-US.json");
for (let id of [].concat(navigator.languages, ["en-US"])) {
if (this.setLocale(id))
break;
}
this.setTitle("{app.title}", true);
// Element
document.body.append(this.element);
window.addEventListener("resize", e=>{
this.element.style.height = window.innerHeight + "px";
this.element.style.width = window.innerWidth + "px";
});
window.dispatchEvent(new Event("resize"));
this.addEventListener("keydown", e=>this.onKeyDown(e));
// Menus
this.menuBar = new Toolkit.MenuBar(this);
this.menuBar.setLabel("{menu._}", true);
this.add(this.menuBar);
this.initFileMenu ();
this.initEmulationMenu();
this.initDebugMenu (0, this.debugMode);
this.initDebugMenu (1, this.debugMode && this.dualMode);
this.initThemeMenu ();
// Fallback for bubbled key events
document.body.addEventListener("focusout", e=>this.onBlur(e));
window .addEventListener("keydown" , e=>this.onKey (e));
window .addEventListener("keyup" , e=>this.onKey (e));
// Temporary: Faux game mode display
this.display = new Toolkit.Component(this, {
class : "tk display",
style : { position: "relative" },
visible: !this.debugMode
});
this.image1 = new Toolkit.Component(this, { style: {
background: "#000000",
position : "absolute"
}});
this.display.add(this.image1);
this.image2 = new Toolkit.Component(this, { style: {
background: "#000000",
position : "absolute"
}});
this.display.add(this.image2);
this.display.addEventListener("resize", e=>this.onDisplay());
this.add(this.display);
// Temporary: Faux debug mode display
this.desktop = new Toolkit.Desktop(this, {
visible: this.debugMode
});
this.add(this.desktop);
// Emulation core
this.core = await new Core().init();
let sims = (await this.core.create(2)).sims;
this.core.onsubscription = (k,m)=>this.onSubscription(k, m);
// Debugging managers
this.dasm = new Disassembler();
this.debug = new Array(sims.length);
for (let x = 0; x < sims.length; x++) {
let dbg = this.debug[x] = new Debugger(this, sims[x], x);
if (x == 0 && !this.dualMode) {
dbg.cpu .substitute("#", "");
dbg.memory.substitute("#", "");
}
this.desktop.add(dbg.cpu);
this.desktop.add(dbg.memory);
}
// Reveal the application
this.visible = true;
this.restoreFocus();
console.log(
"CPU window shortcuts:\n" +
" F11 Single step\n" +
" F10 Run to next\n" +
" Ctrl+B Toggle bytes column\n" +
" Ctrl+F Fit columns\n" +
" Ctrl+G Goto"
);
}
// Initialize File menu
initFileMenu() {
let bar = this.menuBar;
let item = bar.file = new Toolkit.MenuItem(this);
item.setText("{menu.file._}");
bar.add(item);
let menu = item.menu = new Toolkit.Menu(this);
item = bar.file.loadROM0 = new Toolkit.MenuItem(this);
item.setText("{menu.file.loadROM}");
item.substitute("#", this.dualMode ? " 1" : "", false);
item.addEventListener("action", e=>this.onLoadROM(0));
menu.add(item);
item = bar.file.loadROM1 = new Toolkit.MenuItem(this,
{ visible: this.dualMode });
item.setText("{menu.file.loadROM}");
item.substitute("#", " 2", false);
item.addEventListener("action", e=>this.onLoadROM(1));
menu.add(item);
item = bar.file.dualMode = new Toolkit.MenuItem(this,
{ checked: this.dualMode, type: "checkbox" });
item.setText("{menu.file.dualMode}");
item.addEventListener("action", e=>this.onDualMode());
menu.add(item);
item = bar.file.debugMode = new Toolkit.MenuItem(this,
{ checked: this.debugMode, disabled: true, type: "checkbox" });
item.setText("{menu.file.debugMode}");
item.addEventListener("action", e=>this.onDebugMode());
menu.add(item);
menu.addSeparator();
item = new Toolkit.MenuItem(this);
item.setText("Export source...", false);
item.addEventListener("action", ()=>this.bundle.save());
menu.add(item);
}
// Initialize Emulation menu
initEmulationMenu() {
let bar = this.menuBar;
let item = bar.emulation = new Toolkit.MenuItem(this);
item.setText("{menu.emulation._}");
bar.add(item);
let menu = item.menu = new Toolkit.Menu(this);
item = bar.emulation.run =
new Toolkit.MenuItem(this, { disabled: true });
item.setText("{menu.emulation.run}");
menu.add(item);
item = bar.emulation.reset0 = new Toolkit.MenuItem(this);
item.setText("{menu.emulation.reset}");
item.substitute("#", this.dualMode ? " 1" : "", false);
item.addEventListener("action", e=>this.onReset(0));
menu.add(item);
item = bar.emulation.reset1 = new Toolkit.MenuItem(this,
{ visible: this.dualMode });
item.setText("{menu.emulation.reset}");
item.substitute("#", " 2", false);
item.addEventListener("action", e=>this.onReset(1));
menu.add(item);
item = bar.emulation.linkSims = new Toolkit.MenuItem(this,
{ disabled: true, type: "checkbox", visible: this.dualMode });
item.setText("{menu.emulation.linkSims}");
menu.add(item);
}
// Initialize Debug menu
initDebugMenu(index, visible) {
let bar = this.menuBar;
let item = bar["debug" + index] = new Toolkit.MenuItem(this,
{ visible: visible }), top = item;
item.setText("{menu.debug._}");
item.substitute("#",
index == 0 ? this.dualMode ? "1" : "" : " 2", false);
bar.add(item);
let menu = item.menu = new Toolkit.Menu(this);
item = top.console = new Toolkit.MenuItem(this, { disabled: true });
item.setText("{menu.debug.console}");
menu.add(item);
item = top.memory = new Toolkit.MenuItem(this);
item.setText("{menu.debug.memory}");
item.addEventListener("action",
e=>this.showWindow(this.debug[index].memory));
menu.add(item);
item = top.cpu = new Toolkit.MenuItem(this);
item.setText("{menu.debug.cpu}");
item.addEventListener("action",
e=>this.showWindow(this.debug[index].cpu));
menu.add(item);
item=top.breakpoints = new Toolkit.MenuItem(this, { disabled: true });
item.setText("{menu.debug.breakpoints}");
menu.add(item);
menu.addSeparator();
item = top.palettes = new Toolkit.MenuItem(this, { disabled: true });
item.setText("{menu.debug.palettes}");
menu.add(item);
item = top.characters = new Toolkit.MenuItem(this, { disabled: true });
item.setText("{menu.debug.characters}");
menu.add(item);
item = top.bgMaps = new Toolkit.MenuItem(this, { disabled: true });
item.setText("{menu.debug.bgMaps}");
menu.add(item);
item = top.backgrounds = new Toolkit.MenuItem(this, { disabled:true });
item.setText("{menu.debug.backgrounds}");
menu.add(item);
item = top.objects = new Toolkit.MenuItem(this, { disabled: true });
item.setText("{menu.debug.objects}");
menu.add(item);
item = top.frameBuffers = new Toolkit.MenuItem(this, {disabled: true});
item.setText("{menu.debug.frameBuffers}");
menu.add(item);
}
// Initialize Theme menu
initThemeMenu() {
let bar = this.menuBar;
let item = bar.theme = new Toolkit.MenuItem(this);
item.setText("{menu.theme._}");
bar.add(item);
let menu = item.menu = new Toolkit.Menu(this);
item = bar.theme.auto = new Toolkit.MenuItem(this,
{ checked: true, type: "checkbox" });
item.setText("{menu.theme.auto}");
item.theme = "auto";
item.addEventListener("action", e=>this.theme = "auto");
menu.add(item);
item = bar.theme.light = new Toolkit.MenuItem(this,
{ checked: false, type: "checkbox" });
item.setText("{menu.theme.light}");
item.theme = "light";
item.addEventListener("action", e=>this.theme = "light");
menu.add(item);
item = bar.theme.dark = new Toolkit.MenuItem(this,
{ checked: false, type: "checkbox" });
item.setText("{menu.theme.dark}");
item.theme = "dark";
item.addEventListener("action", e=>this.theme = "dark");
menu.add(item);
item = bar.theme.light = new Toolkit.MenuItem(this,
{ checked: false, type: "checkbox" });
item.setText("{menu.theme.virtual}");
item.theme = "virtual";
item.addEventListener("action", e=>this.theme = "virtual");
menu.add(item);
}
///////////////////////////// Event Handlers //////////////////////////////
// All elements have lost focus
onBlur(e) {
if (
e.relatedTarget == null ||
e.relatedTarget == document.body
) this.restoreFocus();
}
// Dark mode preference changed
onDark() {
if (this._theme != "auto")
return;
let isDark = this.isDark.matches;
this.themes.light.disabled = isDark;
this.themes.dark .disabled = !isDark;
}
// Game mode display resized
onDisplay() {
let bounds = this.display.element.getBoundingClientRect();
let width = Math.max(1, bounds.width);
let height = Math.max(1, bounds.height);
let scale, x1, y1, x2, y2;
// Single mode
if (!this.dualMode) {
this.image2.visible = false;
scale = Math.max(1, Math.min(
Math.floor(width / 384),
Math.floor(height / 224)
));
x1 = Math.max(0, Math.floor((width - 384 * scale) / 2));
y1 = Math.max(0, Math.floor((height - 224 * scale) / 2));
x2 = y2 = 0;
}
// Dual mode
else {
this.image2.visible = true;
// Horizontal orientation
if (true) {
scale = Math.max(1, Math.min(
Math.floor(width / 768),
Math.floor(height / 224)
));
let gap = Math.max(0, width - 768 * scale);
gap = gap < 0 ? 0 : Math.floor(gap / 3) + (gap%3==2 ? 1 : 0);
x1 = gap;
x2 = Math.max(384 * scale, width - 384 * scale - gap);
y1 = y2 = Math.max(0, Math.floor((height - 224 * scale) / 2));
}
// Vertical orientation
else {
scale = Math.max(1, Math.min(
Math.floor(width / 384),
Math.floor(height / 448)
));
let gap = Math.max(0, height - 448 * scale);
gap = gap < 0 ? 0 : Math.floor(gap / 3) + (gap%3==2 ? 1 : 0);
x1 = x2 = Math.max(0, Math.floor((width - 384 * scale) / 2));
y1 = gap;
y2 = Math.max(224 * scale, height - 224 * scale - gap);
}
}
width = 384 * scale + "px";
height = 224 * scale + "px";
Object.assign(this.image1.element.style,
{ left: x1+"px", top: y1+"px", width: width, height: height });
Object.assign(this.image2.element.style,
{ left: x2+"px", top: y2+"px", width: width, height: height });
}
// File -> Debug mode
onDebugMode() {
this.debugMode =!this.debugMode;
this.display.visible =!this.debugMode;
this.desktop.visible = this.debugMode;
this.configMenus();
this.onDisplay();
}
// Emulation -> Dual mode
onDualMode() {
this.setDualMode(!this.dualMode);
this.configMenus();
this.onDisplay();
}
// Key press
onKeyDown(e) {
// Take no action
if (!e.altKey || e.key != "F10" ||
this.menuBar.contains(document.activeElement))
return;
// Move focus into the menu bar
this.menuBar.focus();
Toolkit.handle(e);
}
// File -> Load ROM
async onLoadROM(index) {
// Add a file picker to the document
let file = document.createElement("input");
file.type = "file";
file.style.position = "absolute";
file.style.visibility = "hidden";
document.body.appendChild(file);
// Prompt the user to select a file
await new Promise(resolve=>{
file.addEventListener("input", resolve);
file.click();
});
file.remove();
// No file was selected
file = file.files[0];
if (!file)
return;
// Load the file
let data = null;
try { data = new Uint8Array(await file.arrayBuffer()); }
catch {
alert(this.localize("{menu.file.loadROMError}"));
return;
}
// Attempt to process the file as an ISX binary
try { data = Debugger.isx(data).toROM(); } catch { }
// Error checking
if (
data.length < 1024 ||
data.length > 0x1000000 ||
(data.length & data.length - 1)
) {
alert(this.localize("{menu.file.loadROMInvalid}"));
return;
}
// Load the ROM into simulation memory
let rep = await this.core.setROM(this.debug[index].sim, data,
{ refresh: true });
if (!rep.success) {
alert(this.localize("{menu.file.loadROMError}"));
return;
}
this.debug[index].followPC(0xFFFFFFF0);
}
// Emulation -> Reset
async onReset(index) {
await this.core.reset(this.debug[index].sim, { refresh: true });
this.debug[index].followPC(0xFFFFFFF0);
}
// Core subscription
onSubscription(key, msg) {
let target = this.debug; // Handler object
for (let x = 1; x < key.length - 1; x++)
target = target[key[x]];
target[key[key.length - 1]].call(target, msg);
}
///////////////////////////// Public Methods //////////////////////////////
// Specify document title
setTitle(title, localize) {
this.setString("text", title, localize);
}
// Specify the color theme
get theme() { return this._theme; }
set theme(theme) {
switch (theme) {
case "light": case "dark": case "virtual":
this._theme = theme;
for (let entry of Object.entries(this.themes))
entry[1].disabled = entry[0] != theme;
break;
default:
this._theme = "auto";
this.themes["virtual"].disabled = true;
this.onDark();
}
for (let item of this.menuBar.theme.menu.children)
item.checked = item.theme == theme;
}
///////////////////////////// Package Methods /////////////////////////////
// Configure components for automatic localization, or localize a message
localize(a, b) {
// Default behavior
if (a && a != this)
return super.localize(a, b);
// Update localization strings
if (this.text != null) {
let text = this.text;
document.title = !text[1] ? text[0] :
this.localize(text[0], this.substitutions);
}
}
// Return focus to the most recent focused element
restoreFocus() {
// Focus was successfully restored
if (super.restoreFocus())
return true;
// Select the foremost visible window
let wnd = this.desktop.getActiveWindow();
if (wnd) {
wnd.focus();
return true;
}
// Select the menu bar
this.menuBar.focus();
return true;
}
// Perform a Run Next command on one of the simulations
runToNext(index, options) {
let debugs = [ this.debug[index] ];
if (this.dualMode)
debugs.push(this.debug[index ^ 1]);
let ret = this.core.runToNext(debugs.map(d=>d.sim), options);
if (ret instanceof Promise) ret.then(msg=>{
for (let x = 0; x < debugs.length; x++)
debugs[x].followPC(msg.pcs[x]);
});
}
// Perform a Single Step command on one of the simulations
singleStep(index, options) {
let debugs = [ this.debug[index] ];
if (this.dualMode)
debugs.push(this.debug[index ^ 1]);
let ret = this.core.singleStep(debugs.map(d=>d.sim), options);
if (ret instanceof Promise) ret.then(msg=>{
for (let x = 0; x < debugs.length; x++)
debugs[x].followPC(msg.pcs[x]);
});
}
///////////////////////////// Private Methods /////////////////////////////
// Configure menu item visibility
configMenus() {
let bar = this.menuBar;
bar.file.debugMode .checked = this.debugMode;
bar.file.loadROM1 .visible = this.dualMode;
bar.emulation.reset1 .visible = this.dualMode;
bar.emulation.linkSims.visible = this.dualMode;
bar.debug0 .visible = this.debugMode;
bar.debug1 .visible = this.debugMode && this.dualMode;
}
// Specify whether dual mode is active
setDualMode(dualMode) {
// Update state
if (dualMode == this.dualMode)
return;
this.dualMode = dualMode;
// Working variables
let index = dualMode ? " 1" : "";
// Update menus
let bar = this.menuBar;
bar.file.loadROM0 .substitute("#", index, false);
bar.debug0 .substitute("#", index, false);
bar.emulation.reset0.substitute("#", index, false);
bar.file.dualMode .checked = this.dualMode;
// Update sim 1 debug windows
let dbg = this.debug[0];
dbg.cpu .substitute("#", index);
dbg.memory.substitute("#", index);
// Re-show any sim 2 debug windows that were previously visible
if (dualMode) {
for (let wnd of this.desktop.children) {
if (wnd.index == 1 && wnd.wasVisible)
wnd.visible = true;
}
}
// Hide any visible sim 2 debug windows
else for (let wnd of this.desktop.children) {
if (wnd.index == 0)
continue;
wnd.wasVisible = wnd.visible;
wnd.visible = false;
}
}
// Ensure a debugger window is visible
showWindow(wnd) {
let adjust = false;
// The window is already visible
if (wnd.visible) {
// The window is already in the foreground
if (wnd == this.desktop.getActiveWindow())
;//adjust = true;
// Bring the window to the foreground
else this.desktop.bringToFront(wnd);
}
// The window is not visible
else {
adjust = !wnd.shown;
if (adjust && wnd.firstShow)
wnd.firstShow();
wnd.visible = true;
this.desktop.bringToFront(wnd);
}
// Adjust the window position
if (adjust) {
let bounds = this.desktop.element.getBoundingClientRect();
wnd.left = Math.max(0, (bounds.width - wnd.outerWidth ) / 2);
wnd.top = Math.max(0, (bounds.height - wnd.outerHeight) / 2);
}
// Transfer focus into the window
wnd.focus();
}
// Install a stylesheet. Returns the resulting <link> element
stylesheet(filename, disabled = true) {
let ret = document.createElement("link");
ret.href = filename;
ret.rel = "stylesheet";
ret.type = "text/css";
ret.disabled = disabled;
document.head.append(ret);
return ret;
}
///////////////////////////// Program Methods /////////////////////////////
// Program entry point
static main(bundle) {
new App(bundle).init();
}
}
export { App };

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import java.awt.image.*;
import java.io.*;
import java.nio.charset.*;
import java.util.*;
import javax.imageio.*;
public class Bundle {
/////////////////////////////// BundledFile ///////////////////////////////
// Individual packaged resource file
static class BundledFile implements Comparable<BundledFile> {
// Instance fields
byte[] data; // File data loaded from disk
File file; // Source file
String filename; // Logical filename
// Constructor
BundledFile(BundledFile parent, File file) {
// Configure instance fields
this.file = file;
filename = parent == null ? "" : parent.filename + file.getName();
// Load file data if file
if (file.isFile()) {
try (var stream = new FileInputStream(file)) {
data = stream.readAllBytes();
} catch (Exception e) { }
}
// Update filename if directory
else if (parent != null) filename += "/";
}
// Comparator
public int compareTo(BundledFile o) {
return
filename.equals("web/_boot.js") ? -1 :
o.filename.equals("web/_boot.js") ? +1 :
filename.compareTo(o.filename)
;
}
// Produce a list of child files or directories
BundledFile[] listFiles(String name, boolean isDirectory) {
// Produce a filtered list of files
var files = this.file.listFiles(f->{
// Does not satisfy the directory requirement
if (f.isDirectory() != isDirectory)
return false;
// Current directory is not root
if (!filename.equals(""))
return true;
// Filter specific files from being bundled
String filename = f.getName();
return !(
filename.startsWith(".git" ) ||
filename.startsWith(name + "_") &&
filename.endsWith (".html" )
);
});
// Process all files for bundling
var ret = new BundledFile[files.length];
for (int x = 0; x < files.length; x++)
ret[x] = new BundledFile(this, files[x]);
return ret;
}
}
///////////////////////////// Program Methods /////////////////////////////
// Program entry point
public static void main(String[] args) {
String name = name(args[0]);
var files = listFiles(args[0]);
var prepend = prepend(name, files);
var bundle = bundle(prepend, files);
var image = image(bundle);
var url = url(image);
patch(name, url);
}
// Produce a buffer of the bundled files
static byte[] bundle(byte[] prepend, BundledFile[] files) {
try (var stream = new ByteArrayOutputStream()) {
stream.write(prepend);
stream.write(files[0].data); // web/_boot.js
stream.write(0);
for (int x = 1; x < files.length; x++)
stream.write(files[x].data);
return stream.toByteArray();
} catch (Exception e) { return null; }
}
// Convert a bundle buffer into a PNG-encoded image buffer
static byte[] image(byte[] bundle) {
int width = (int) Math.ceil(Math.sqrt(bundle.length));
int height = (bundle.length + width - 1) / width;
var pixels = new int[width * height];
// Encode the buffer as a pixel array
for (int x = 0; x < bundle.length; x++) {
int b = bundle[x] & 0xFF;
pixels[x] = 0xFF000000 | b << 16 | b << 8 | b;
}
// Produce an image using the pixels
var image = new BufferedImage(
width, height, BufferedImage.TYPE_INT_RGB);
image.setRGB(0, 0, width, height, pixels, 0, width);
// Encode the image as a PNG buffer
try (var stream = new ByteArrayOutputStream()) {
ImageIO.write(image, "png", stream);
return stream.toByteArray();
} catch (Exception e) { return null; }
}
// List all files
static BundledFile[] listFiles(String name) {
var dirs = new ArrayList<BundledFile>();
var files = new ArrayList<BundledFile>();
// Propagate down the file system tree
dirs.add(new BundledFile(null, new File(".")));
while (!dirs.isEmpty()) {
var dir = dirs.remove(0);
for (var sub : dir.listFiles(name, true ))
dirs.add(sub );
for (var file : dir.listFiles(name, false))
files.add(file);
}
// Return the set of files as a sorted array
Collections.sort(files);
return files.toArray(new BundledFile[files.size()]);
}
// Generate a filename for the bundle
static String name(String name) {
var calendar = Calendar.getInstance();
return String.format("%s_%04d%02d%02d",
name,
calendar.get(Calendar.YEAR),
calendar.get(Calendar.MONTH) + 1,
calendar.get(Calendar.DAY_OF_MONTH)
);
}
// Produce the output HTML from the template
static void patch(String name, String url) {
String markup = null;
try (var stream = new FileInputStream("web/template.html")) {
markup = new String(stream.readAllBytes(), StandardCharsets.UTF_8);
} catch (Exception e) { }
markup = markup.replace("src=\"\"", "src=\"" + url + "\"");
try (var stream = new FileOutputStream(name + ".html")) {
stream.write(markup.getBytes(StandardCharsets.UTF_8));
} catch (Exception e) { }
}
// Produce source data to prepend to web/_boot.js
static byte[] prepend(String name, BundledFile[] files) {
var ret = new StringBuilder();
// Arguments
ret.append("let " +
"buffer=arguments[0]," +
"image=arguments[1]," +
"name=\"" + name + "\"" +
";");
// Bundle manifest
ret.append("let manifest=[");
for (var file : files) {
if (file != files[0])
ret.append(",");
ret.append("[\"" +
file.filename + "\", " + file.data.length + "]");
}
ret.append("];");
// Convert to byte array
return ret.toString().getBytes(StandardCharsets.UTF_8);
}
// Convert an image buffer to a data URL
static String url(byte[] image) {
return "data:image/png;base64," +
Base64.getMimeEncoder(0, new byte[0]).encodeToString(image);
}
}

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// Running as an async function
// Prepended by Bundle.java: buffer, image, manifest, name
///////////////////////////////////////////////////////////////////////////////
// Bundle //
///////////////////////////////////////////////////////////////////////////////
// Resource manager for bundled files
class Bundle extends Array {
//////////////////////////////// Constants ////////////////////////////////
// .ZIP support
static CRC_LOOKUP = new Uint32Array(256);
// Text processing
static DECODER = new TextDecoder();
static ENCODER = new TextEncoder();
static initializer() {
// Generate the CRC32 lookup table
for (let x = 0; x <= 255; x++) {
let l = x;
for (let j = 7; j >= 0; j--)
l = ((l >>> 1) ^ (0xEDB88320 & -(l & 1)));
this.CRC_LOOKUP[x] = l;
}
}
///////////////////////// Initialization Methods //////////////////////////
constructor(name, url, settings, isDebug) {
super();
this.isDebug = isDebug;
this.name = name;
this.settings = settings;
this.url = url;
}
///////////////////////////// Public Methods //////////////////////////////
// Export all bundled resources to a .ZIP file
save() {
let centrals = new Array(this.length);
let locals = new Array(this.length);
let offset = 0;
let size = 0;
// Encode file and directory entries
for (let x = 0; x < this.length; x++) {
let file = this[x];
let sum = Bundle.crc32(file.data);
locals [x] = file.toZipHeader(sum);
centrals[x] = file.toZipHeader(sum, offset);
offset += locals [x].length;
size += centrals[x].length;
}
// Encode end of central directory
let end = [];
Bundle.writeInt(end, 4, 0x06054B50); // Signature
Bundle.writeInt(end, 2, 0); // Disk number
Bundle.writeInt(end, 2, 0); // Central dir start disk
Bundle.writeInt(end, 2, this.length); // # central dir this disk
Bundle.writeInt(end, 2, this.length); // # central dir total
Bundle.writeInt(end, 4, size); // Size of central dir
Bundle.writeInt(end, 4, offset); // Offset of central dir
Bundle.writeInt(end, 2, 0); // .ZIP comment length
// Prompt the user to save the resulting file
let a = document.createElement("a");
a.download = this.name + ".zip";
a.href = URL.createObjectURL(new Blob(
locals.concat(centrals).concat([Uint8Array.from(end)]),
{ type: "application/zip" }
));
a.style.visibility = "hidden";
document.body.appendChild(a);
a.click();
a.remove();
}
///////////////////////////// Package Methods /////////////////////////////
// Add a BundledFile to the collection
add(file) {
file.bundle = this;
this.push(this[file.name] = file);
}
// Write a byte array into an output buffer
static writeBytes(data, bytes) {
for (let b of bytes)
data.push(b);
}
// Write an integer into an output buffer
static writeInt(data, size, value) {
for (; size > 0; size--, value >>= 8)
data.push(value & 0xFF);
}
// Write a string of text as bytes into an output buffer
static writeString(data, text) {
this.writeBytes(data, this.ENCODER.encode(text));
}
///////////////////////////// Private Methods /////////////////////////////
// Calculate the CRC32 checksum for a byte array
static crc32(data) {
let c = 0xFFFFFFFF;
for (let x = 0; x < data.length; x++)
c = ((c >>> 8) ^ this.CRC_LOOKUP[(c ^ data[x]) & 0xFF]);
return ~c & 0xFFFFFFFF;
}
}
Bundle.initializer();
///////////////////////////////////////////////////////////////////////////////
// BundledFile //
///////////////////////////////////////////////////////////////////////////////
// Individual file in the bundled data
class BundledFile {
//////////////////////////////// Constants ////////////////////////////////
// MIME types
static MIMES = {
".css" : "text/css;charset=UTF-8",
".frag" : "text/plain;charset=UTF-8",
".js" : "text/javascript;charset=UTF-8",
".json" : "application/json;charset=UTF-8",
".png" : "image/png",
".svg" : "image/svg+xml;charset=UTF-8",
".txt" : "text/plain;charset=UTF-8",
".vert" : "text/plain;charset=UTF-8",
".wasm" : "application/wasm",
".woff2": "font/woff2"
};
///////////////////////// Initialization Methods //////////////////////////
constructor(name, buffer, offset, length) {
// Configure instance fields
this.data = buffer.slice(offset, offset + length);
this.name = name;
// Resolve the MIME type
let index = name.lastIndexOf(".");
this.mime = index != -1 && BundledFile.MIMES[name.substring(index)] ||
"application/octet-stream";
}
///////////////////////////// Public Methods //////////////////////////////
// Represent the file with a blob URL
toBlobURL() {
return this.blobURL || (this.blobURL = URL.createObjectURL(
new Blob([ this.data ], { type: this.mime })));
}
// Encode the file data as a data URL
toDataURL() {
return "data:" + this.mime + ";base64," + btoa(
Array.from(this.data).map(b=>String.fromCharCode(b)).join(""));
}
// Pre-process URLs in a bundled file's contents
toProcURL(asDataURL = false) {
// The URL has already been computed
if (this.url)
return this.url;
// Working variables
let content = this.toString();
let pattern = /\/\*\*?\*\//g;
let parts = content.split(pattern);
let ret = [ parts.shift() ];
// Process all URLs prefixed with /**/ or /***/
for (let part of parts) {
let start = part.indexOf("\"");
let end = part.indexOf("\"", start + 1);
let filename = part.substring(start + 1, end);
let asData = pattern.exec(content)[0] == "/***/";
// Relative to current file
if (filename.startsWith(".")) {
let path = this.name.split("/");
path.pop(); // Current filename
// Navigate to the path of the target file
for (let dir of filename.split("/")) {
switch (dir) {
case "..": path.pop(); // Fallthrough
case "." : break;
default : path.push(dir);
}
}
// Produce the fully-qualified filename
filename = path.join("/");
}
// Append the file as a data URL
let file = this.bundle[filename];
ret.push(
part.substring(0, start + 1),
file[
file.mime.startsWith("text/javascript") ||
file.mime.startsWith("text/css") ?
"toProcURL" : asData ? "toDataURL" : "toBlobURL"
](asData),
part.substring(end)
);
}
// Represent the transformed source as a URL
return this.url = asDataURL ?
"data:" + this.mime + ";base64," + btoa(ret.join("")) :
URL.createObjectURL(new Blob(ret, { type: this.mime }))
;
}
// Decode the file data as a UTF-8 string
toString() {
return Bundle.DECODER.decode(this.data);
}
///////////////////////////// Package Methods /////////////////////////////
// Produce a .ZIP header for export
toZipHeader(crc32, offset) {
let central = offset !== undefined;
let ret = [];
if (central) {
Bundle.writeInt (ret, 4, 0x02014B50); // Signature
Bundle.writeInt (ret, 2, 20); // Version created by
} else
Bundle.writeInt (ret, 4, 0x04034B50); // Signature
Bundle.writeInt (ret, 2, 20); // Version required
Bundle.writeInt (ret, 2, 0); // Bit flags
Bundle.writeInt (ret, 2, 0); // Compression method
Bundle.writeInt (ret, 2, 0); // Modified time
Bundle.writeInt (ret, 2, 0); // Modified date
Bundle.writeInt (ret, 4, crc32); // Checksum
Bundle.writeInt (ret, 4, this.data.length); // Compressed size
Bundle.writeInt (ret, 4, this.data.length); // Uncompressed size
Bundle.writeInt (ret, 2, this.name.length); // Filename length
Bundle.writeInt (ret, 2, 0); // Extra field length
if (central) {
Bundle.writeInt (ret, 2, 0); // File comment length
Bundle.writeInt (ret, 2, 0); // Disk number start
Bundle.writeInt (ret, 2, 0); // Internal attributes
Bundle.writeInt (ret, 4, 0); // External attributes
Bundle.writeInt (ret, 4, offset); // Relative offset
}
Bundle.writeString (ret, this.name); // Filename
if (!central)
Bundle.writeBytes(ret, this.data); // File data
return Uint8Array.from(ret);
}
}
///////////////////////////////////////////////////////////////////////////////
// Boot Program //
///////////////////////////////////////////////////////////////////////////////
// Produce the application bundle
let bundle = new Bundle(name, image.src, image.getAttribute("settings") || "",
location.protocol != "file:" && location.hash == "#debug");
for (let x=0,offset=buffer.indexOf(0)-manifest[0][1]; x<manifest.length; x++) {
let entry = manifest[x];
bundle.add(new BundledFile(entry[0], buffer, offset, entry[1]));
offset += entry[1] + (x == 0 ? 1 : 0);
}
// Begin program operations
(await import(bundle.isDebug ?
"./web/App.js" :
bundle["web/App.js"].toProcURL()
)).App.main(bundle);

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"use strict";
// Dedicated audio output thread
class AudioThread extends AudioWorkletProcessor {
///////////////////////// Initialization Methods //////////////////////////
constructor() {
super();
// Configure instance fields
this.buffers = []; // Input sample buffer queue
this.offset = 0; // Offset into oldest buffer
// Wait for initializer message from parent thread
this.port.onmessage = m=>this.init(m.data);
}
async init(main) {
// Configure message ports
this.core = this.port;
this.core.onmessage = m=>this.onCore(m.data);
this.main = main;
this.main.onmessage = m=>this.onMain(m.data);
// Notify main thread
this.port.postMessage(0);
}
///////////////////////////// Public Methods //////////////////////////////
// Produce output samples (called by the user agent)
process(inputs, outputs, parameters) {
let output = outputs[0];
let length = output [0].length;
let empty = null;
// Process all samples
for (let x = 0; x < length;) {
// No bufferfed samples are available
if (this.buffers.length == 0) {
for (; x < length; x++)
output[0] = output[1] = 0;
break;
}
// Transfer samples from the oldest buffer
let y, buffer = this.buffers[0];
for (y = this.offset; x < length && y < buffer.length; x++, y+=2) {
output[0][x] = buffer[y ];
output[1][x] = buffer[y + 1];
}
// Advance to the next buffer
if ((this.offset = y) == buffer.length) {
if (empty == null)
empty = [];
empty.push(this.buffers.shift());
this.offset = 0;
}
}
// Return emptied sample buffers to the core thread
if (empty != null)
this.core.postMessage(empty, empty.map(e=>e.buffer));
return true;
}
///////////////////////////// Message Methods /////////////////////////////
// Message received from core thread
onCore(msg) {
}
// Message received from main thread
onMain(msg) {
}
}
registerProcessor("AudioThread", AudioThread);

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// Interface between application and WebAssembly worker thread
class Core {
//////////////////////////////// Constants ////////////////////////////////
/* Register types */
static VB_PROGRAM = 0;
static VB_SYSTEM = 1;
static VB_OTHER = 2;
/* System registers */
static VB_ADTRE = 25;
static VB_CHCW = 24;
static VB_ECR = 4;
static VB_EIPC = 0;
static VB_EIPSW = 1;
static VB_FEPC = 2;
static VB_FEPSW = 3;
static VB_PIR = 6;
static VB_PSW = 5;
static VB_TKCW = 7;
/* Other registers */
static VB_PC = 0;
///////////////////////// Initialization Methods //////////////////////////
constructor() {
// Configure instance fields
this.promises = [];
}
async init(coreUrl, wasmUrl, audioUrl) {
// Open audio output stream
this.audio = new AudioContext({
latencyHint: "interactive",
sampleRate : 41700
});
await this.audio.suspend();
// Launch the audio thread
await this.audio.audioWorklet.addModule(
Core.url(audioUrl, "AudioThread.js", /***/"./AudioThread.js"));
let node = new AudioWorkletNode(this.audio, "AudioThread", {
numberOfInputs : 0,
numberOfOutputs : 1,
outputChannelCount: [2]
});
node.connect(this.audio.destination);
// Attach a second MessagePort to the audio thread
let channel = new MessageChannel();
this.audio.port = channel.port1;
await new Promise(resolve=>{
node.port.onmessage = resolve;
node.port.postMessage(channel.port2, [channel.port2]);
});
this.audio.port.onmessage = m=>this.onAudio(m.data);
// Launch the core thread
this.core = new Worker(
Core.url(wasmUrl, "CoreThread.js", /***/"./CoreThread.js"));
await new Promise(resolve=>{
this.core.onmessage = resolve;
this.core.postMessage({
audio : node.port,
wasmUrl: Core.url(wasmUrl, "core.wasm", /***/"./core.wasm")
}, [node.port]);
});
this.core.onmessage = m=>this.onCore(m.data);
return this;
}
///////////////////////////// Static Methods //////////////////////////////
// Select a URL in the same path as the current script
static url(arg, name, bundled) {
// The input argument was provided
if (arg)
return arg;
// Running from a bundle distribution
if (bundled.startsWith("blob:") || bundled.startsWith("data:"))
return bundled;
// Compute the URL for the given filename
let url = new URL(import.meta.url).pathname;
return url.substring(0, url.lastIndexOf("/") + 1) + name;
}
///////////////////////////// Event Handlers //////////////////////////////
// Message received from audio thread
onAudio(msg) {
}
// Message received from core thread
onCore(msg) {
// Process subscriptions
if (msg.subscriptions && this.onsubscription instanceof Function) {
for (let sub of msg.subscriptions) {
let key = sub.subscription;
delete sub.subscription;
this.onsubscription(key, sub, this);
}
delete msg.subscriptions;
}
// The main thread is waiting on a reply
if (msg.isReply) {
delete msg.isReply;
// For "create", produce sim objects
if (msg.isCreate) {
delete msg.isCreate;
msg.sims = msg.sims.map(s=>({ pointer: s }));
}
// Notify the caller
this.promises.shift()(msg);
}
}
///////////////////////////// Public Methods //////////////////////////////
// Create and initialize simulations
create(count, options) {
return this.message({
command: "create",
count : count
}, [], options);
}
// Delete a simulation
delete(sim, options) {
return this.message({
command: "delete",
sim : sim.pointer
}, [], options);
}
// Retrieve the value of all CPU registers
getAllRegisters(sim, options) {
return this.message({
command: "getAllRegisters",
sim : sim.pointer
}, [], options);
}
// Retrieve the value of a register
getRegister(sim, type, id, options) {
return this.message({
command: "getRegister",
id : id,
sim : sim.pointer,
type : type
}, [], options);
}
// Read multiple bytes from memory
read(sim, address, length, options) {
return this.message({
command: "read",
address: address,
length : length,
sim : sim.pointer
}, [], options);
}
// Refresh subscriptions
refresh(subscriptions = null, options) {
return this.message({
command : "refresh",
subscriptions: subscriptions
}, [], options);
}
// Simulate a hardware reset
reset(sim, options) {
return this.message({
command: "reset",
sim : sim.pointer
}, [], options);
}
// Execute until the next current instruction
runToNext(sims, options) {
return this.message({
command: "runToNext",
sims : Array.isArray(sims) ?
sims.map(s=>s.pointer) : [ sims.pointer ]
}, [], options);
}
// Specify a value for a register
setRegister(sim, type, id, value, options) {
return this.message({
command: "setRegister",
id : id,
sim : sim.pointer,
type : type,
value : value
}, [], options);
}
// Specify a cartridge ROM buffer
setROM(sim, data, options = {}) {
data = data.slice();
return this.message({
command: "setROM",
data : data,
reset : !("reset" in options) || !!options.reset,
sim : sim.pointer
}, [data.buffer], options);
}
// Execute the current instruction
singleStep(sims, options) {
return this.message({
command: "singleStep",
sims : Array.isArray(sims) ?
sims.map(s=>s.pointer) : [ sims.pointer ]
}, [], options);
}
// Cancel a subscription
unsubscribe(subscription, options) {
return this.message({
command : "unsubscribe",
subscription: subscription
}, [], options);
}
// Write multiple bytes to memory
write(sim, address, data, options) {
data = data.slice();
return this.message({
address: address,
command: "write",
data : data,
sim : sim.pointer
}, [data.buffer], options);
}
///////////////////////////// Private Methods /////////////////////////////
// Send a message to the core thread
message(msg, transfers, options = {}) {
// Configure options
if (!(options instanceof Object))
options = { reply: options };
if (!("reply" in options) || options.reply)
msg.reply = true;
if ("refresh" in options)
msg.refresh = options.refresh;
if ("subscription" in options)
msg.subscription = options.subscription;
if ("tag" in options)
msg.tag = options.tag;
// Send the command to the core thread
return msg.reply ?
new Promise(resolve=>{
this.promises.push(resolve);
this.core.postMessage(msg, transfers);
}) :
this.core.postMessage(msg, transfers);
;
}
}
export { Core };

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"use strict";
/* Register types */
const VB_PROGRAM = 0;
const VB_SYSTEM = 1;
const VB_OTHER = 2;
/* System registers */
const VB_ADTRE = 25;
const VB_CHCW = 24;
const VB_ECR = 4;
const VB_EIPC = 0;
const VB_EIPSW = 1;
const VB_FEPC = 2;
const VB_FEPSW = 3;
const VB_PIR = 6;
const VB_PSW = 5;
const VB_TKCW = 7;
/* Other registers */
const VB_PC = 0;
// Dedicated emulation thread
class CoreThread {
///////////////////////// Initialization Methods //////////////////////////
constructor() {
// Configure instance fields
this.subscriptions = new Map();
// Wait for initializer message from parent thread
onmessage = m=>this.init(m.data.audio, m.data.wasmUrl);
}
async init(audio, wasmUrl) {
// Configure message ports
this.audio = audio;
this.audio.onmessage = m=>this.onAudio (m.data);
this.main = globalThis;
this.main .onmessage = m=>this.onMessage(m.data);
// Load and instantiate the WebAssembly module
this.wasm = (await WebAssembly.instantiateStreaming(
fetch(wasmUrl), {
env: { emscripten_notify_memory_growth: ()=>this.onGrowth() }
})).instance;
this.onGrowth();
this.pointerSize = this.PointerSize();
this.pointerType = this.pointerSize == 8 ? Uint64Array : Uint32Array;
// Notify main thread
this.main.postMessage(0);
}
///////////////////////////// Event Handlers //////////////////////////////
// Message received from audio thread
onAudio(frames) {
// Audio processing was suspended
if (frames == 0) {
return;
}
// Wait for more frames
this.audio.postMessage(0);
}
// Emscripten has grown the linear memory
onGrowth() {
Object.assign(this, this.wasm.exports);
}
// Message received from main thread
onMessage(msg) {
// Subscribe to the command
if (msg.subscription && msg.command != "refresh")
this.subscriptions.set(CoreThread.key(msg.subscription), msg);
// Process the command
let rep = this[msg.command](msg);
// Do not send a reply
if (!msg.reply)
return;
// Configure the reply
if (!rep)
rep = {};
if (msg.reply)
rep.isReply = true;
if ("tag" in msg)
rep.tag = msg.tag;
// Send the reply to the main thread
let transfers = rep.transfers;
if (transfers)
delete rep.transfers;
this.main.postMessage(rep, transfers || []);
// Refresh subscriptions
if (msg.refresh && msg.command != "refresh") {
let subs = {};
if (Array.isArray(msg.refresh))
subs.subscriptions = msg.refresh;
this.refresh(subs);
}
}
//////////////////////////////// Commands /////////////////////////////////
// Create and initialize a new simulation
create(msg) {
let sims = new Array(msg.count);
for (let x = 0; x < msg.count; x++)
sims[x] = this.Create();
return {
isCreate: true,
sims : sims
};
}
// Delete all memory used by a simulation
delete(msg) {
this.Delete(msg.sim);
}
// Retrieve the values of all CPU registers
getAllRegisters(msg) {
let program = new Int32Array (32);
let system = new Uint32Array(32);
for (let x = 0; x < 32; x++) {
program[x] = this.vbGetRegister(msg.sim, 0, x);
system [x] = this.vbGetRegister(msg.sim, 1, x);
}
return {
pc : this.vbGetRegister(msg.sim, 2, 0) >>> 0,
program : program,
system : system,
transfers: [ program.buffer, system.buffer ]
};
}
// Retrieve the value of a register
getRegister(msg) {
let value = this.vbGetRegister(msg.sim, msg.type, msg.id);
if (msg.type != VB_PROGRAM)
value >>>= 0;
return { value: value };
}
// Read multiple bytes from memory
read(msg) {
let buffer = this.malloc(msg.length);
this.vbReadEx(msg.sim, msg.address, buffer.pointer, msg.length);
let data = buffer.slice();
this.free(buffer);
return {
address : msg.address,
data : data,
transfers: [data.buffer]
};
}
// Process subscriptions
refresh(msg) {
let subscriptions = [];
let transfers = [];
// Select the key set to refresh
let keys = Array.isArray(msg.subscriptions) ?
msg.subscriptions.map(s=>CoreThread.key(s)) :
this.subscriptions.keys()
;
// Process all subscriptions
for (let key of keys) {
// Process the subscription
let sub = this.subscriptions.get(key);
let rep = this[sub.command](sub);
// There is no result
if (!rep)
continue;
// Add the result to the response
rep.subscription = sub.subscription;
if ("tag" in sub)
rep.tag = sub.tag;
subscriptions.push(rep);
// Add the transfers to the response
if (!rep.transfers)
continue;
transfers = transfers.concat(rep.transfers);
delete rep.transfers;
}
// Send the response to the main thread
if (subscriptions.length == 0)
return;
this.main.postMessage({
subscriptions: subscriptions.sort(CoreThread.REFRESH_ORDER)
}, transfers);
}
// Simulate a hardware reset
reset(msg) {
this.vbReset(msg.sim);
}
// Execute until the next current instruction
runToNext(msg) {
let sims = this.malloc(msg.sims.length, true);
for (let x = 0; x < msg.sims.length; x++)
sims[x] = msg.sims[x];
this.RunToNext(sims.pointer, msg.sims.length);
this.free(sims);
let pcs = new Array(msg.sims.length);
for (let x = 0; x < msg.sims.length; x++)
pcs[x] = this.vbGetRegister(msg.sims[x], 2, 0) >>> 0;
return { pcs: pcs };
}
// Specify a value for a register
setRegister(msg) {
let value = this.vbSetRegister(msg.sim, msg.type, msg.id, msg.value);
if (msg.type != VB_PROGRAM)
value >>>= 0;
return { value: value };
}
// Specify a cartridge ROM buffer
setROM(msg) {
let prev = this.vbGetROM(msg.sim, 0);
let success = true;
// Specify a new ROM
if (msg.data != null) {
let data = this.malloc(msg.data.length);
for (let x = 0; x < data.length; x++)
data[x] = msg.data[x];
success = !this.vbSetROM(msg.sim, data.pointer, data.length);
}
// Operation was successful
if (success) {
// Delete the previous ROM
this.Free(prev);
// Reset the simulation
if (msg.reset)
this.vbReset(msg.sim);
}
return { success: success };
}
// Execute the current instruction
singleStep(msg) {
let sims = this.malloc(msg.sims.length, true);
for (let x = 0; x < msg.sims.length; x++)
sims[x] = msg.sims[x];
this.SingleStep(sims.pointer, msg.sims.length);
this.free(sims);
let pcs = new Array(msg.sims.length);
for (let x = 0; x < msg.sims.length; x++)
pcs[x] = this.vbGetRegister(msg.sims[x], 2, 0) >>> 0;
return { pcs: pcs };
}
// Delete a subscription
unsubscribe(msg) {
this.subscriptions.delete(CoreThread.key(msg.subscription));
}
// Write multiple bytes to memory
write(msg) {
let data = this.malloc(msg.data.length);
for (let x = 0; x < data.length; x++)
data[x] = msg.data[x];
this.vbWriteEx(msg.sim, msg.address, data.pointer, data.length);
this.free(data);
}
///////////////////////////// Private Methods /////////////////////////////
// Delete a byte array in WebAssembly memory
free(buffer) {
this.Free(buffer.pointer);
}
// Format a subscription key as a string
static key(subscription) {
return subscription.map(k=>k.toString()).join("\n");
}
// Allocate a byte array in WebAssembly memory
malloc(length, pointers = false) {
let size = pointers ? length * this.pointerSize : length;
return this.map(this.Malloc(size), length, pointers);
}
// Map a typed array into WebAssembly memory
map(address, length, pointers = false) {
let ret = new (pointers ? this.pointerType : Uint8Array)
(this.memory.buffer, address, length);
ret.pointer = address;
return ret;
}
// Comparator for subscriptions within the refresh command
static REFRESH_ORDER(a, b) {
a = a.subscription[0];
b = b.subscription[0];
return a < b ? -1 : a > b ? 1 : 0;
}
}
new CoreThread();

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// Machine code to human readable text converter
class Disassembler {
//////////////////////////////// Constants ////////////////////////////////
// Default settings
static DEFAULTS = {
condCL : "L", // Use C/NC or L/NL for conditions
condEZ : "E", // Use E/NE or Z/NZ for conditions
condNames : true, // Use condition names
condUppercase: false, // Condition names uppercase
hexPrefix : "0x", // Hexadecimal prefix
hexSuffix : "", // Hexadecimal suffix
hexUppercase : true, // Hexadecimal uppercase
instUppercase: true, // Mnemonics uppercase
jumpAddress : true, // Jump/branch shows target address
memInside : false, // Use [reg1 + disp] notation
opDestFirst : false, // Destination operand first
proNames : true, // Use program register names
proUppercase : false, // Program register names uppercase
splitBcond : false, // BCOND condition as an operand
splitSetf : true, // SETF condition as an operand
sysNames : true, // Use system register names
sysUppercase : false // System register names uppercase
};
/////////////////////////// Disassembly Lookup ////////////////////////////
// Opcode descriptors
static OPDEFS = [
[ "MOV" , [ "opReg1" , "opReg2" ] ], // 000000
[ "ADD" , [ "opReg1" , "opReg2" ] ],
[ "SUB" , [ "opReg1" , "opReg2" ] ],
[ "CMP" , [ "opReg1" , "opReg2" ] ],
[ "SHL" , [ "opReg1" , "opReg2" ] ],
[ "SHR" , [ "opReg1" , "opReg2" ] ],
[ "JMP" , [ "opReg1Ind" ] ],
[ "SAR" , [ "opReg1" , "opReg2" ] ],
[ "MUL" , [ "opReg1" , "opReg2" ] ],
[ "DIV" , [ "opReg1" , "opReg2" ] ],
[ "MULU" , [ "opReg1" , "opReg2" ] ],
[ "DIVU" , [ "opReg1" , "opReg2" ] ],
[ "OR" , [ "opReg1" , "opReg2" ] ],
[ "AND" , [ "opReg1" , "opReg2" ] ],
[ "XOR" , [ "opReg1" , "opReg2" ] ],
[ "NOT" , [ "opReg1" , "opReg2" ] ],
[ "MOV" , [ "opImm5S", "opReg2" ] ], // 010000
[ "ADD" , [ "opImm5S", "opReg2" ] ],
null, // SETF: special
[ "CMP" , [ "opImm5S", "opReg2" ] ],
[ "SHL" , [ "opImm5U", "opReg2" ] ],
[ "SHR" , [ "opImm5U", "opReg2" ] ],
[ "CLI" , [ ] ],
[ "SAR" , [ "opImm5U", "opReg2" ] ],
[ "TRAP" , [ "opImm5U" ] ],
[ "RETI" , [ ] ],
[ "HALT" , [ ] ],
null, // Invalid
[ "LDSR" , [ "opReg2" , "opSys" ] ],
[ "STSR" , [ "opSys" , "opReg2" ] ],
[ "SEI" , [ ] ],
null, // Bit string: special
null, // BCOND: special // 100000
null, // BCOND: special
null, // BCOND: special
null, // BCOND: special
null, // BCOND: special
null, // BCOND: special
null, // BCOND: special
null, // BCOND: special
[ "MOVEA", [ "opImm16U" , "opReg1", "opReg2" ] ],
[ "ADDI" , [ "opImm16S" , "opReg1", "opReg2" ] ],
[ "JR" , [ "opDisp26" ] ],
[ "JAL" , [ "opDisp26" ] ],
[ "ORI" , [ "opImm16U" , "opReg1", "opReg2" ] ],
[ "ANDI" , [ "opImm16U" , "opReg1", "opReg2" ] ],
[ "XORI" , [ "opImm16U" , "opReg1", "opReg2" ] ],
[ "MOVHI", [ "opImm16U" , "opReg1", "opReg2" ] ],
[ "LD.B" , [ "opReg1Disp", "opReg2" ] ], // 110000
[ "LD.H" , [ "opReg1Disp", "opReg2" ] ],
null, // Invalid
[ "LD.W" , [ "opReg1Disp", "opReg2" ] ],
[ "ST.B" , [ "opReg2" , "opReg1Disp" ] ],
[ "ST.H" , [ "opReg2" , "opReg1Disp" ] ],
null, // Invalid
[ "ST.W" , [ "opReg2" , "opReg1Disp" ] ],
[ "IN.B" , [ "opReg1Disp", "opReg2" ] ],
[ "IN.H" , [ "opReg1Disp", "opReg2" ] ],
[ "CAXI" , [ "opReg1Disp", "opReg2" ] ],
[ "IN.W" , [ "opReg1Disp", "opReg2" ] ],
[ "OUT.B", [ "opReg2" , "opReg1Disp" ] ],
[ "OUT.H", [ "opReg2" , "opReg1Disp" ] ],
null, // Floating-point/Nintendo: special
[ "OUT.W", [ "opReg2" , "opReg1Disp" ] ]
];
// Bit string sub-opcode descriptors
static BITSTRING = [
"SCH0BSU", "SCH0BSD", "SCH1BSU", "SCH1BSD",
null , null , null , null ,
"ORBSU" , "ANDBSU" , "XORBSU" , "MOVBSU" ,
"ORNBSU" , "ANDNBSU", "XORNBSU", "NOTBSU" ,
null , null , null , null ,
null , null , null , null ,
null , null , null , null ,
null , null , null , null
];
// Floating-point/Nintendo sub-opcode descriptors
static FLOATENDO = [
[ "CMPF.S" , [ "opReg1", "opReg2" ] ],
null, // Invalid
[ "CVT.WS" , [ "opReg1", "opReg2" ] ],
[ "CVT.SW" , [ "opReg1", "opReg2" ] ],
[ "ADDF.S" , [ "opReg1", "opReg2" ] ],
[ "SUBF.S" , [ "opReg1", "opReg2" ] ],
[ "MULF.S" , [ "opReg1", "opReg2" ] ],
[ "DIVF.S" , [ "opReg1", "opReg2" ] ],
[ "XB" , [ "opReg2" ] ],
[ "XH" , [ "opReg2" ] ],
[ "REV" , [ "opReg1", "opReg2" ] ],
[ "TRNC.SW", [ "opReg1", "opReg2" ] ],
[ "MPYHW" , [ "opReg1", "opReg2" ] ],
null, null, null,
null, null, null, null, null, null, null, null,
null, null, null, null, null, null, null, null,
null, null, null, null, null, null, null, null,
null, null, null, null, null, null, null, null,
null, null, null, null, null, null, null, null,
null, null, null, null, null, null, null, null
];
// Condition mnemonics
static CONDITIONS = [
"V" , "C" , "E" , "NH", "N", "T", "LT", "LE",
"NV", "NC", "NE", "H" , "P", "F", "GE", "GT"
];
// Program register names
static REG_PROGRAM = [
"r0" , "r1" , "hp" , "sp" , "gp" , "tp" , "r6" , "r7" ,
"r8" , "r9" , "r10", "r11", "r12", "r13", "r14", "r15",
"r16", "r17", "r18", "r19", "r20", "r21", "r22", "r23",
"r24", "r25", "r26", "r27", "r28", "r29", "r30", "lp"
];
// System register names
static REG_SYSTEM = [
"EIPC", "EIPSW", "FEPC", "FEPSW", "ECR", "PSW", "PIR", "TKCW",
"8" , "9" , "10" , "11" , "12" , "13" , "14" , "15" ,
"16" , "17" , "18" , "19" , "20" , "21" , "22" , "23" ,
"CHCW", "ADTRE", "26" , "27" , "28" , "29" , "30" , "31"
];
// Other register names
static REG_OTHER = [ "PC", "PSW" ];
///////////////////////////// Static Methods //////////////////////////////
// Determine the bounds of a data buffer to represent all lines of output
static dataBounds(address, line, length) {
let before = 10; // Number of lines before the first line of output
let max = 4; // Maximum number of bytes that can appear on a line
// The reference line is before the preferred earliest line
if (line < -before) {
length = (length - line) * max;
}
// The reference line is before the first line
else if (line < 0) {
address -= (line + before) * max;
length = (length + before) * max;
}
// The reference line is at or after the first line
else {
address -= (line + before) * max;
length = (Math.max(length, line) + before) * max;
}
return {
address: (address & ~1) >>> 0,
length : length
};
}
///////////////////////// Initialization Methods //////////////////////////
constructor() {
Object.assign(this, Disassembler.DEFAULTS);
}
///////////////////////////// Public Methods //////////////////////////////
// Disassemble a region of memory
disassemble(data, dataAddress, refAddress, refLine, length, pc = null) {
let pcOffset = pc === null ? -1 : pc - dataAddress >>> 0;
// Locate the offset of the first line of output in the buffer
let offset = 0;
for (let
addr = dataAddress,
circle = refLine > 0 ? new Array(refLine) : null,
index = 0,
more = [],
remain = null
;;) {
// Determine the size of the current line
if (more.length == 0)
this.more(more, data, offset);
let size = more.shift();
// The current line contains the reference address
if (refAddress - addr >>> 0 < size) {
// The next item in the buffer is the first line of output
if (refLine > 0) {
offset = circle[index];
break;
}
// This line is the first line of output
if (refLine == 0)
break;
// Count more lines for the first line of output
remain = refLine;
}
// Record the offset of the current instruction
if (refLine > 0) {
circle[index] = offset;
index = (index + 1) % circle.length;
}
// Advance to the next line
let sizeToPC = pcOffset - offset >>> 0;
if (offset != pcOffset && sizeToPC < size) {
size = sizeToPC;
more.splice();
}
addr = addr + size >>> 0;
offset += size;
if (remain !== null && ++remain == 0)
break; // The next line is the first line of output
}
// Process all lines of output
let lines = new Array(length);
for (let
addr = dataAddress + offset,
more = [],
x = 0;
x < length; x++
) {
// Determine the size of the current line
if (more.length == 0)
this.more(more, data, offset, pcOffset);
let size = more.shift();
// Add the line to the response
lines[x] = this.format({
rawAddress: addr,
rawBytes : data.slice(offset, offset + size)
});
// Advance to the next line
let sizeToPC = pcOffset - offset >>> 0;
if (offset != pcOffset && sizeToPC < size) {
size = sizeToPC;
more.splice();
}
addr = addr + size >>> 0;
offset += size;
}
return lines;
}
/////////////////////////// Formatting Methods ////////////////////////////
// Format a line as human-readable text
format(line) {
let canReverse = true;
let opcode = line.rawBytes[1] >>> 2;
let opdef;
let code = [
line.rawBytes[1] << 8 | line.rawBytes[0],
line.rawBytes.length == 2 ? null :
line.rawBytes[3] << 8 | line.rawBytes[2]
];
// BCOND
if ((opcode & 0b111000) == 0b100000) {
let cond = code[0] >>> 9 & 15;
opdef =
cond == 13 ? [ "NOP", [ ] ] :
this.splitBcond ? [ "BCOND", [ "opBCond", "opDisp9" ] ] :
[
cond == 5 ? "BR" : "B" + this.condition(cond, true),
[ "opDisp9" ]
]
;
canReverse = false;
}
// Processing by opcode
else switch (opcode) {
// SETF
case 0b010010:
opdef = !this.splitSetf ?
[
"SETF" + Disassembler.CONDITIONS[code[0] & 15],
[ "opReg2" ]
] :
[ "SETF", [ "opCond", "opReg2" ] ]
;
break;
// Bit string
case 0b011111:
opdef = Disassembler.BITSTRING[code[0] & 31];
if (opdef != null)
opdef = [ opdef, [] ];
break;
// Floating-point/Nintendo
case 0b111110:
opdef = Disassembler.FLOATENDO[code[1] >>> 10];
break;
// All others
default: opdef = Disassembler.OPDEFS[opcode];
}
// The opcode is undefined
if (opdef == null)
opdef = [ "---", [] ];
// Format the line's display text
line.address = this.hex(line.rawAddress, 8, false);
line.bytes = new Array(line.rawBytes.length);
line.mnemonic = this.instUppercase ? opdef[0] : opdef[0].toLowerCase();
line.operands = new Array(opdef[1].length);
for (let x = 0; x < line.bytes.length; x++)
line.bytes[x] = this.hex(line.rawBytes[x], 2, false);
for (let x = 0; x < line.operands.length; x++)
line.operands[x] = this[opdef[1][x]](line, code);
if (this.opDestFirst && canReverse)
line.operands.reverse();
return line;
}
// Format a condition operand in a BCOND instruction
opBCond(line, code) {
return this.condition(code[0] >>> 9 & 15);
}
// Format a condition operand in a SETF instruction
opCond(line, code) {
return this.condition(code[0] & 15);
}
// Format a 9-bit displacement operand
opDisp9(line, code) {
let disp = code[0] << 23 >> 23;
return this.jump(line.rawAddress, disp);
}
// Format a 26-bit displacement operand
opDisp26(line, code) {
let disp = (code[0] << 16 | code[1]) << 6 >> 6;
return this.jump(line.rawAddress, disp);
}
// Format a 5-bit signed immediate operand
opImm5S(line, code) {
return (code[0] & 31) << 27 >> 27;
}
// Format a 5-bit unsigned immediate operand
opImm5U(line, code) {
return code[0] & 31;
}
// Format a 16-bit signed immediate operand
opImm16S(line, code) {
let ret = code[1] << 16 >> 16;
return (
ret < -256 ? "-" + this.hex(-ret) :
ret > 256 ? this.hex( ret) :
ret
);
}
// Format a 16-bit unsigned immediate operand
opImm16U(line, code) {
return this.hex(code[1], 4);
}
// Format a Reg1 operand
opReg1(line, code) {
return this.programRegister(code[0] & 31);
}
// Format a disp[reg1] operand
opReg1Disp(line, code) {
let disp = code[1] << 16 >> 16;
let reg1 = this.programRegister(code[0] & 31);
// Do not print the displacement
if (disp == 0)
return "[" + reg1 + "]";
// Format the displacement amount
disp =
disp < -256 ? "-" + this.hex(-disp) :
disp > 256 ? this.hex( disp) :
disp.toString()
;
// [reg1 + disp] notation
if (this.memInside) {
return "[" + reg1 + (disp.startsWith("-") ?
" - " + disp.substring(1) :
" + " + disp
) + "]";
}
// disp[reg1] notation
return disp + "[" + reg1 + "]";
}
// Format a [Reg1] operand
opReg1Ind(line, code) {
return "[" + this.programRegister(code[0] & 31) + "]";
}
// Format a Reg2 operand
opReg2(line, code) {
return this.programRegister(code[0] >> 5 & 31);
}
// Format a system register operand
opSys(line, code) {
return this.systemRegister(code[0] & 31);
}
///////////////////////////// Private Methods /////////////////////////////
// Select the mnemonic for a condition
condition(index, forceUppercase = false) {
if (!this.condNames)
return index.toString();
let ret =
index == 1 ? this.condCL :
index == 2 ? this.condEZ :
index == 9 ? "N" + this.condCL :
index == 10 ? "N" + this.condEZ :
Disassembler.CONDITIONS[index]
;
if (!forceUppercase && !this.condUppercase)
ret = ret.toLowerCase();
return ret;
}
// Format a number as a hexadecimal string
hex(value, digits = null, decorated = true) {
value = value.toString(16);
if (this.hexUppercase)
value = value.toUpperCase();
if (digits != null)
value = value.padStart(digits, "0");
if (decorated) {
value = this.hexPrefix + value + this.hexSuffix;
if (this.hexPrefix == "" && "0123456789".indexOf(value[0]) == -1)
value = "0" + value;
}
return value;
}
// Format a jump or branch destination
jump(address, disp) {
return (
this.jumpAddress ?
this.hex(address + disp >>> 0, 8, false) :
disp < -256 ? "-" + this.hex(-disp) :
disp > 256 ? "+" + this.hex( disp) :
disp.toString()
);
}
// Determine the number of bytes in the next line(s) of disassembly
more(more, data, offset) {
// Error checking
if (offset + 1 >= data.length)
throw new Error("Disassembly error: Unexpected EoF");
// Determine the instruction's size from its opcode
let opcode = data[offset + 1] >>> 2;
more.push(
opcode < 0b101000 || // 16-bit instruction
opcode == 0b110010 || // Illegal opcode
opcode == 0b110110 // Illegal opcode
? 2 : 4);
}
// Format a program register
programRegister(index) {
let ret = this.proNames ?
Disassembler.REG_PROGRAM[index] : "r" + index;
if (this.proUppercase)
ret = ret.toUpperCase();
return ret;
}
// Format a system register
systemRegister(index) {
let ret = this.sysNames ?
Disassembler.REG_SYSTEM[index] : index.toString();
if (!this.sysUppercase && this.sysNames)
ret = ret.toLowerCase();
return ret;
}
}
export { Disassembler };

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#undef VBAPI
#include <stdlib.h>
#include <emscripten/emscripten.h>
#include <vb.h>
/////////////////////////////// Module Commands ///////////////////////////////
// Create and initialize a new simulation
EMSCRIPTEN_KEEPALIVE VB* Create() {
VB *sim = malloc(sizeof (VB));
vbInit(sim);
return sim;
}
// Delete all memory used by a simulation
EMSCRIPTEN_KEEPALIVE void Delete(VB *sim) {
free(sim->cart.ram);
free(sim->cart.rom);
free(sim);
}
// Proxy for free()
EMSCRIPTEN_KEEPALIVE void Free(void *ptr) {
free(ptr);
}
// Proxy for malloc()
EMSCRIPTEN_KEEPALIVE void* Malloc(int size) {
return malloc(size);
}
// Size in bytes of a pointer
EMSCRIPTEN_KEEPALIVE int PointerSize() {
return sizeof (void *);
}
////////////////////////////// Debugger Commands //////////////////////////////
// Execute until the following instruction
static uint32_t RunToNextAddress;
static int RunToNextFetch(VB *sim, int fetch, VBAccess *access) {
return access->address == RunToNextAddress;
}
static int RunToNextExecute(VB *sim, VBInstruction *inst) {
RunToNextAddress = inst->address + inst->size;
vbSetCallback(sim, VB_ONEXECUTE, NULL);
vbSetCallback(sim, VB_ONFETCH, &RunToNextFetch);
return 0;
}
EMSCRIPTEN_KEEPALIVE void RunToNext(VB **sims, int count) {
uint32_t clocks = 20000000; // 1s
vbSetCallback(sims[0], VB_ONEXECUTE, &RunToNextExecute);
vbEmulateEx (sims, count, &clocks);
vbSetCallback(sims[0], VB_ONEXECUTE, NULL);
vbSetCallback(sims[0], VB_ONFETCH , NULL);
}
// Execute the current instruction
static int SingleStepBreak;
static int SingleStepFetch(VB *sim, int fetch, VBAccess *access) {
if (fetch != 0)
return 0;
if (SingleStepBreak == 1)
return 1;
SingleStepBreak = 1;
return 0;
}
EMSCRIPTEN_KEEPALIVE void SingleStep(VB **sims, int count) {
uint32_t clocks = 20000000; // 1s
SingleStepBreak = sims[0]->cpu.stage == 0 ? 0 : 1;
vbSetCallback(sims[0], VB_ONFETCH, &SingleStepFetch);
vbEmulateEx (sims, count, &clocks);
vbSetCallback(sims[0], VB_ONEXECUTE, NULL);
vbSetCallback(sims[0], VB_ONFETCH , NULL);
}

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import { ISX } from /**/"./ISX.js";
// Debug mode UI manager
class Debugger {
///////////////////////////// Static Methods //////////////////////////////
// Data type conversions
static F32 = new Float32Array(1);
static U32 = new Uint32Array(this.F32.buffer);
// Reinterpret a float32 as a u32
static fxi(x) {
this.F32[0] = x;
return this.U32[0];
}
// Process file data as ISM
static isx(data) {
return new ISX(data);
}
// Reinterpret a u32 as a float32
static ixf(x) {
this.U32[0] = x;
return this.F32[0];
}
// Compute the number of lines scrolled by a WheelEvent
static linesScrolled(e, lineHeight, pageLines, delta) {
let ret = {
delta: delta,
lines: 0
};
// No scrolling occurred
if (e.deltaY == 0);
// Scrolling by pixel
else if (e.deltaMode == WheelEvent.DOM_DELTA_PIXEL) {
ret.delta += e.deltaY;
ret.lines = Math.sign(ret.delta) *
Math.floor(Math.abs(ret.delta) / lineHeight);
ret.delta -= ret.lines * lineHeight;
}
// Scrolling by line
else if (e.deltaMode == WheelEvent.DOM_DELTA_LINE)
ret.lines = Math.trunc(e.deltaY);
// Scrolling by page
else if (e.deltaMode == WheelEvent.DOM_DELTA_PAGE)
ret.lines = Math.trunc(e.deltaY) * pageLines;
// Unknown scrolling mode
else ret.lines = 3 * Math.sign(e.deltaY);
return ret;
}
///////////////////////// Initialization Methods //////////////////////////
constructor(app, sim, index) {
// Configure instance fields
this.app = app;
this.core = app.core;
this.dasm = app.dasm;
this.sim = sim;
// Configure debugger windows
this.cpu = new Debugger.CPU (this, index);
this.memory = new Debugger.Memory(this, index);
}
///////////////////////////// Package Methods /////////////////////////////
// Disassembler configuration has changed
dasmConfigured() {
this.cpu .dasmConfigured();
this.memory.dasmConfigured();
}
// Ensure PC is visible in the disassembler
followPC(pc = null) {
this.cpu.disassembler.followPC(pc);
}
// Format a number as hexadecimal
hex(value, digits = null, decorated = true) {
return this.dasm.hex(value, digits, decorated);
}
}
// Register component classes
(await import(/**/"./CPU.js" )).register(Debugger);
(await import(/**/"./Memory.js")).register(Debugger);
export { Debugger };

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// Debug manager for Intelligent Systems binaries
class ISX {
///////////////////////// Initialization Methods //////////////////////////
// Throws on decoding error
constructor(data) {
// Configure instance fields
this.data = data;
this.offset = 0;
this.ranges = [];
this.symbols = [];
this.codes = [];
// Skip any header that may be present
if (data.length >= 32 && this.readInt(3) == 0x585349)
this.offset = 32;
else this.offset = 0;
// Process all records
while (this.offset < this.data.length) {
switch (this.readInt(1)) {
// Virtual Boy records
case 0x11: this.code (); break;
case 0x13: this.range (); break;
case 0x14: this.symbol(); break;
// System records
case 0x20:
case 0x21:
case 0x22:
let length = this.readInt(4);
this.offset += length;
break;
// Other records
default: throw "ISX decode error";
}
}
// Cleanup instance fields
delete this.data;
delete this.decoder;
delete this.offset;
}
///////////////////////////// Public Methods //////////////////////////////
// Produce a .vb format ROM file from the ISX code segments
toROM() {
let head = 0x00000000;
let tail = 0x01000000;
// Inspect all code segments
for (let code of this.codes) {
let start = code.address & 0x00FFFFFF;
let end = start + code.data.length;
// Segment begins in the first half of ROM
if (start < 0x00800000) {
// Segment ends in the second half of ROM
if (end > 0x00800000) {
head = tail = 0;
break;
}
// Segment ends in the first half of ROM
else if (end > head)
head = end;
}
// Segment begins in the second half of ROM
else if (start < tail)
tail = start;
}
// Prepare the output buffer
let min = head + 0x01000000 - tail;
let size = 1;
for (; size < min; size <<= 1);
let rom = new Uint8Array(size);
// Output all code segments
for (let code of this.codes) {
let dest = code.address & rom.length - 1;
for (let src = 0; src < code.data.length; src++, dest++)
rom[dest] = code.data[src];
}
return rom;
}
///////////////////////////// Private Methods /////////////////////////////
// Process a code record
code() {
let address = this.readInt(4);
let length = this.readInt(4);
let data = this.readBytes(length);
if (
length == 0 ||
length > 0x01000000 ||
(address & 0x07000000) != 0x07000000 ||
(address & 0x07000000) + length > 0x08000000
) throw "ISX decode error";
this.codes.push({
address: address,
data : data
});
}
// Process a range record
range() {
let count = this.readInt(2);
while (count--) {
let start = this.readInt(4);
let end = this.readInt(4);
let type = this.readInt(1);
this.ranges.push({
end : end,
start: start,
type : type
});
}
}
// Process a symbol record
symbol() {
let count = this.readInt(2);
while (count--) {
let length = this.readInt(1);
let name = this.readString(length);
let flags = this.readInt(2);
let address = this.readInt(4);
this.symbols.push({
address: address,
flags : flags,
name : name
});
}
}
// Read a byte buffer
readBytes(size) {
if (this.offset + size > this.data.length)
throw "ISX decode error";
let ret = this.data.slice(this.offset, this.offset + size);
this.offset += size;
return ret;
}
// Read an integer
readInt(size) {
if (this.offset + size > this.data.length)
throw "ISX decode error";
let ret = new Uint32Array(1);
for (let shift = 0; size > 0; size--, shift += 8)
ret[0] |= this.data[this.offset++] << shift;
return ret[0];
}
// Read a text string
readString(size) {
return (this.decoder = this.decoder || new TextDecoder()
).decode(this.readBytes(size));
}
}
export { ISX };

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import { Toolkit } from /**/"../toolkit/Toolkit.js";
let register = Debugger => Debugger.Memory =
// Debugger memory window
class Memory extends Toolkit.Window {
///////////////////////// Initialization Methods //////////////////////////
constructor(debug, index) {
super(debug.app, {
class: "tk window memory"
});
// Configure instance fields
this.data = null,
this.dataAddress = null,
this.debug = debug;
this.delta = 0;
this.editDigit = null;
this.height = 300;
this.index = index;
this.lines = [];
this.pending = false;
this.shown = false;
this.subscription = [ 0, index, "memory", "refresh" ];
this.width = 400;
// Available buses
this.buses = [
{
editAddress: 0x05000000,
viewAddress: 0x05000000
}
];
this.bus = this.buses[0];
// Window
this.setTitle("{debug.memory._}", true);
this.substitute("#", " " + (index + 1));
if (index == 1)
this.element.classList.add("two");
this.addEventListener("close" , e=>this.visible = false);
this.addEventListener("visibility", e=>this.onVisibility(e));
// Client area
Object.assign(this.client.style, {
display : "grid",
gridTemplateRows: "max-content auto"
});
// Bus drop-down
this.drpBus = new Toolkit.DropDown(debug.app);
this.drpBus.setLabel("{debug.memory.bus}", true);
this.drpBus.setTitle("{debug.memory.bus}", true);
this.drpBus.add("{debug.memory.busMemory}", true, this.buses[0]);
this.drpBus.addEventListener("input", e=>this.busInput());
this.add(this.drpBus);
// Hex editor
this.hexEditor = new Toolkit.Component(debug.app, {
class : "tk mono hex-editor",
role : "application",
tabIndex: "0",
style : {
display : "grid",
gridTemplateColumns: "repeat(17, max-content)",
height : "100%",
minWidth : "100%",
overflow : "hidden",
position : "relative",
width : "max-content"
}
});
this.hexEditor.localize = ()=>{
this.hexEditor.localizeRoleDescription();
this.hexEditor.localizeLabel();
};
this.hexEditor.setLabel("{debug.memory.hexEditor}", true);
this.hexEditor.setRoleDescription("{debug.memory.hexEditor}", true);
this.hexEditor.addEventListener("focusout", e=>this.commit ( ));
this.hexEditor.addEventListener("keydown" , e=>this.hexKeyDown(e));
this.hexEditor.addEventListener("resize" , e=>this.hexResize ( ));
this.hexEditor.addEventListener("wheel" , e=>this.hexWheel (e));
this.hexEditor.addEventListener(
"pointerdown", e=>this.hexPointerDown(e));
this.lastFocus = this.hexEditor;
// Label for measuring text dimensions
this.sizer = new Toolkit.Label(debug.app, {
class : "tk label mono",
visible : false,
visibility: true,
style: {
position: "absolute"
}
});
this.sizer.setText("\u00a0", false); // &nbsp;
this.hexEditor.append(this.sizer);
// Hex editor scroll pane
this.scrHex = new Toolkit.ScrollPane(debug.app, {
overflowX: "auto",
overflowY: "hidden",
view : this.hexEditor
});
this.add(this.scrHex);
// Hide the bus drop-down: Virtual Boy only has one bus
this.drpBus.visible = false;
this.client.style.gridTemplateRows = "auto";
}
///////////////////////////// Event Handlers //////////////////////////////
// Bus drop-down selection
busInput() {
// An edit is in progress
if (this.editDigit !== null)
this.commit(false);
// Switch to the new bus
this.bus = this.drpBus.value;
this.fetch();
}
// Hex editor key press
hexKeyDown(e) {
// Error checking
if (e.altKey || e.ctrlKey)
// Processing by key, scroll lock off
if (!e.getModifierState("ScrollLock")) switch (e.key) {
case "ArrowDown":
this.commit();
this.setEditAddress(this.bus.editAddress + 16);
Toolkit.handle(e);
return;
case "ArrowLeft":
this.commit();
this.setEditAddress(this.bus.editAddress - 1);
Toolkit.handle(e);
return;
case "ArrowRight":
this.commit();
this.setEditAddress(this.bus.editAddress + 1);
Toolkit.handle(e);
return;
case "ArrowUp":
this.commit();
this.setEditAddress(this.bus.editAddress - 16);
Toolkit.handle(e);
return;
case "PageDown":
this.commit();
this.setEditAddress(this.bus.editAddress + this.tall(true)*16);
Toolkit.handle(e);
return;
case "PageUp":
this.commit();
this.setEditAddress(this.bus.editAddress - this.tall(true)*16);
Toolkit.handle(e);
return;
}
// Processing by key, scroll lock on
else switch (e.key) {
case "ArrowDown":
this.setViewAddress(this.bus.viewAddress + 16);
this.fetch();
Toolkit.handle(e);
return;
case "ArrowLeft":
this.scrHex.scrollLeft -= this.scrHex.hscroll.unitIncrement;
Toolkit.handle(e);
return;
case "ArrowRight":
this.scrHex.scrollLeft += this.scrHex.hscroll.unitIncrement;
Toolkit.handle(e);
return;
case "ArrowUp":
this.setViewAddress(this.bus.viewAddress - 16);
this.fetch();
Toolkit.handle(e);
return;
case "PageDown":
this.setViewAddress(this.bus.viewAddress + this.tall(true)*16);
this.fetch();
Toolkit.handle(e);
return;
case "PageUp":
this.setViewAddress(this.bus.viewAddress - this.tall(true)*16);
this.fetch();
Toolkit.handle(e);
return;
}
// Processing by key, editing
switch (e.key) {
case "0": case "1": case "2": case "3": case "4":
case "5": case "6": case "7": case "8": case "9":
case "a": case "A": case "b": case "B": case "c":
case "C": case "d": case "D": case "e": case "E":
case "f": case "F":
let digit = parseInt(e.key, 16);
if (this.editDigit === null) {
this.editDigit = digit;
this.setEditAddress(this.bus.editAddress);
} else {
this.editDigit = this.editDigit << 4 | digit;
this.commit();
this.setEditAddress(this.bus.editAddress + 1);
}
break;
// Commit the current edit
case "Enter":
if (this.editDigit === null)
break;
this.commit();
this.setEditAddress(this.bus.editAddress + 1);
break;
// Cancel the current edit
case "Escape":
if (this.editDigit === null)
return;
this.editDigit = null;
this.setEditAddress(this.bus.editAddress);
break;
default: return;
}
Toolkit.handle(e);
}
// Hex editor pointer down
hexPointerDown(e) {
// Error checking
if (e.button != 0)
return;
// Working variables
let cols = this.lines[0].lblBytes.map(l=>l.getBoundingClientRect());
let y = Math.max(0, Math.floor((e.clientY-cols[0].y)/cols[0].height));
let x = 15;
// Determine which column is closest to the touch point
if (e.clientX < cols[15].right) {
for (let l = 0; l < 15; l++) {
if (e.clientX > (cols[l].right + cols[l + 1].x) / 2)
continue;
x = l;
break;
}
}
// Update the selection address
let address = this.toAddress(this.bus.viewAddress + y * 16 + x);
if (this.editDigit !== null && address != this.bus.editAddress)
this.commit();
this.setEditAddress(address);
}
// Hex editor resized
hexResize() {
let tall = this.tall(false);
let grew = this.lines.length < tall;
// Process all visible lines
for (let y = this.lines.length; y < tall; y++) {
let line = {
lblAddress: document.createElement("div"),
lblBytes : []
};
// Address label
line.lblAddress.className = "addr" + (y == 0 ? " first" : "");
this.hexEditor.append(line.lblAddress);
// Byte labels
for (let x = 0; x < 16; x++) {
let lbl = line.lblBytes[x] = document.createElement("div");
lbl.className = "byte b" + x + (y == 0 ? " first" : "");
this.hexEditor.append(lbl);
}
this.lines.push(line);
}
// Remove lines that are no longer visible
while (tall < this.lines.length) {
let line = this.lines[tall];
line.lblAddress.remove();
for (let lbl of line.lblBytes)
lbl.remove();
this.lines.splice(tall, 1);
}
// Configure components
let lineHeight = this.sizer.element.getBoundingClientRect().height;
this.scrHex.hscroll.unitIncrement = lineHeight;
this.hexEditor.element.style.gridAutoRows = lineHeight + "px";
// Update components
if (grew)
this.fetch();
else this.refresh();
}
// Hex editor mouse wheel
hexWheel(e) {
// Error checking
if (e.altKey || e.ctrlKey || e.shiftKey)
return;
// Always handle the event
Toolkit.handle(e);
// Determine how many full lines were scrolled
let scr = Debugger.linesScrolled(e,
this.sizer.element.getBoundingClientRect().height,
this.tall(true),
this.delta
);
this.delta = scr.delta;
scr.lines = Math.max(-3, Math.min(3, scr.lines));
// No lines were scrolled
if (scr.lines == 0)
return;
// Scroll the view
this.setViewAddress(this.bus.viewAddress + scr.lines * 16);
this.fetch();
}
// Window key press
onKeyDown(e) {
super.onKeyDown(e);
// Error checking
if (e.altKey || !e.ctrlKey || e.shiftKey)
return;
// Processing by key
switch (e.key) {
case "g": case "G": this.goto(); break;
default: return;
}
Toolkit.handle(e);
}
// Window visibility
onVisibility(e) {
this.shown = this.shown || e.visible;
if (!e.visible)
this.debug.core.unsubscribe(this.subscription, false);
else this.fetch();
}
///////////////////////////// Package Methods /////////////////////////////
// Disassembler configuration has changed
dasmConfigured() {
this.refresh();
}
// Prompt the user to navigate to a new editing address
goto() {
// Retrieve the value from the user
let addr = prompt(this.app.localize("{debug.memory.goto}"));
if (addr === null)
return;
addr = parseInt(addr.trim(), 16);
if (
!Number.isInteger(addr) ||
addr < 0 ||
addr > 4294967295
) return;
// Commit an outstanding edit
if (this.editDigit !== null && this.bus.editAddress != addr)
this.commit();
// Navigate to the given address
this.hexEditor.focus();
this.setEditAddress(addr, 1/3);
}
///////////////////////////// Private Methods /////////////////////////////
// Write the edited value to the simulation state
commit(refresh = true) {
// Error checking
if (this.editDigit === null)
return;
// The edited value is in the bus's data buffer
if (this.data != null) {
let offset = this.toAddress(this.bus.editAddress-this.dataAddress);
if (offset < this.data.length)
this.data[offset] = this.editDigit;
}
// Write one byte to the simulation state
let data = new Uint8Array(1);
data[0] = this.editDigit;
this.editDigit = null;
this.debug.core.write(this.debug.sim, this.bus.editAddress,
data, { refresh: refresh });
}
// Retrieve data from the simulation state
async fetch() {
// Select the parameters for the simulation fetch
let params = {
address: this.toAddress(this.bus.viewAddress - 10 * 16),
length : (this.tall(false) + 20) * 16
};
// A communication with the core thread is already underway
if (this.pending) {
this.pending = params;
this.refresh();
return;
}
// Retrieve data from the simulation state
this.pending = params;
for (let data=null, promise=null; this.pending instanceof Object;) {
// Wait for a transaction to complete
if (promise != null) {
this.pending = true;
data = await promise;
promise = null;
}
// Initiate a new transaction
if (this.pending instanceof Object) {
params = this.pending;
let options = {};
if (this.isVisible())
options.subscription = this.subscription;
promise = this.debug.core.read(this.debug.sim,
params.address, params.length, options);
}
// Process the result of a transaction
if (data != null) {
this.refresh(data);
data = null;
}
};
this.pending = false;
}
// Update hex editor
refresh(msg = null) {
// Receiving data from the simulation state
if (msg != null) {
this.data = msg.data;
this.dataAddress = msg.address;
}
// Process all lines
for (let y = 0; y < this.lines.length; y++) {
let address = this.toAddress(this.bus.viewAddress + y * 16);
let line = this.lines[y];
// Address label
line.lblAddress.innerText = this.debug.hex(address, 8, false);
// Process all bytes
for (let x = 0; x < 16; x++) {
let label = line.lblBytes[x];
let text = "--";
// Currently editing this byte
if (address+x==this.bus.editAddress && this.editDigit!==null) {
text = this.debug.hex(this.editDigit, 1, false);
}
// Bus data exists
else if (this.data != null) {
let offset = this.toAddress(address-this.dataAddress+x);
// The byte is contained in the bus data buffer
if (offset >= 0 && offset < this.data.length)
text = this.debug.hex(this.data[offset], 2, false);
}
label.innerText = text;
label.classList[address + x == this.bus.editAddress ?
"add" : "remove"]("edit");
}
}
}
// Specify the address of the hex editor's selection
setEditAddress(address, auto = false) {
let col = this.lines[0].lblBytes[address&15].getBoundingClientRect();
let port = this.scrHex.viewport.element.getBoundingClientRect();
let row = this.toAddress(address & ~15);
let scr = this.scrHex.scrollLeft;
let tall = this.tall(true, 0);
// Ensure the data row is fully visible
if (this.toAddress(row - this.bus.viewAddress) >= tall * 16) {
if (!auto) {
this.setViewAddress(
this.toAddress(this.bus.viewAddress - row) <=
this.toAddress(row - (this.bus.viewAddress + tall * 16))
? row : this.toAddress(row - (tall - 1) * 16));
} else this.setViewAddress(row - Math.floor(tall * auto) * 16);
this.fetch();
}
// Ensure the column is fully visible
this.scrHex.scrollLeft =
Math.min(
Math.max(
scr,
scr + col.right - port.right
),
scr - port.x + col.x
)
;
// Refresh the display;
this.bus.editAddress = this.toAddress(address);
this.refresh();
}
// Specify the address of the hex editor's view
setViewAddress(address) {
this.bus.viewAddress = this.toAddress(address);
}
// Measure the number of lines visible in the view
tall(fully = null, plus = 1) {
return Math.max(1, Math[fully===null ? "abs" : fully?"floor":"ceil"](
this.scrHex.viewport.element.getBoundingClientRect().height /
this.sizer .element.getBoundingClientRect().height
)) + plus;
}
// Ensure an address is in the proper range
toAddress(address) {
return address >>> 0;
}
}
export { register };

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{
"id" : "en-US",
"name": "English (US)",
"app": {
"title": "Virtual Boy Emulator"
},
"menu._": "Main menu",
"menu.file": {
"_" : "File",
"loadROM" : "Load ROM{#}...",
"loadROMError" : "Error loading ROM file",
"loadROMInvalid": "The selected file is not a Virtual Boy ROM.",
"dualMode" : "Dual mode",
"debugMode" : "Debug mode"
},
"menu.emulation": {
"_" : "Emulation",
"run" : "Run",
"pause" : "Pause",
"reset" : "Reset{#}",
"linkSims": "Link sims"
},
"menu.debug": {
"_" : "Debug{#}",
"backgrounds" : "Backgrounds",
"bgMaps" : "BG maps",
"breakpoints" : "Breakpoints",
"characters" : "Characters",
"console" : "Console",
"cpu" : "CPU",
"frameBuffers": "Frame buffers",
"memory" : "Memory",
"objects" : "Objects",
"palettes" : "Palettes"
},
"menu.theme": {
"_" : "Theme",
"auto" : "Auto",
"dark" : "Dark",
"light" : "Light",
"virtual": "Virtual"
},
"window": {
"close": "Close"
},
"debug.cpu": {
"_" : "CPU{#}",
"disassembler" : "Disassembler",
"float" : "Float",
"format" : "Format",
"goto" : "Enter the address to seek to:",
"hex" : "Hex",
"infinity" : "Infinity",
"programRegisters": "Program registers",
"signed" : "Signed",
"systemRegisters" : "System registers",
"unsigned" : "Unsigned",
"value" : "Value"
},
"debug.memory": {
"_" : "Memory{#}",
"bus" : "Bus",
"busMemory": "Memory",
"goto" : "Enter the address to seek to:",
"hexEditor": "Hex editor"
}
}

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<!DOCTYPE html><html lang="en"><head><meta charset="utf-8"><link rel="icon"href="data:;base64,iVBORw0KGgo="><title>Virtual Boy Emulator</title></head><body><img style="display:none;"onload="let a=this,b=a.width,c=a.height,d=document.createElement('canvas');a.remove();d.width=b;d.height=c;d=d.getContext('2d');d.drawImage(a,0,0);d=d.getImageData(0,0,b,c).data.filter((e,f)=>!(f&3));new(async()=>{}).constructor(Array.from(d.slice(0,d.indexOf(0))).map(e=>String.fromCharCode(e)).join(''))(d,a)"src=""></body></html>

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<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<svg xmlns:svg="http://www.w3.org/2000/svg" xmlns="http://www.w3.org/2000/svg" width="10" height="10" viewBox="0 0 2.6458 2.6458" version="1.1">
<g>
<path style="fill:#000000;fill-opacity:1;stroke:none;stroke-width:0.26458px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1" d="m 1.05832,1.653625 1.3229,-1.3229 v 0.66145 l -1.3229,1.3229 -0.79374,-0.79374 v -0.66145 z" />
</g>
</svg>
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<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<svg xmlns:svg="http://www.w3.org/2000/svg" xmlns="http://www.w3.org/2000/svg" width="10" height="10" viewBox="0 0 2.6458 2.6458" version="1.1">
<path style="fill:none;fill-opacity:1;stroke:#000000;stroke-width:0.13229;stroke-linecap:butt;stroke-linejoin:round;stroke-opacity:1;stroke-miterlimit:4;stroke-dasharray:none" d="m 1.05832,1.653625 1.3229,-1.3229 v 0.66145 l -1.3229,1.3229 -0.79374,-0.79374 v -0.66145 z" />
</svg>
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<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<svg xmlns:svg="http://www.w3.org/2000/svg" xmlns="http://www.w3.org/2000/svg" width="11" height="11" viewBox="0 0 2.9104166 2.9104167" version="1.1">
<g>
<path style="fill:#000000;fill-opacity:1;stroke:none;stroke-width:0.264583px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1" d="m 0.52916666,0.52916665 0.396875,0 0.52916664,0.52916665 0.5291667,-0.52916665 0.396875,0 0,0.396875 L 1.8520833,1.4552083 2.38125,1.984375 l 0,0.396875 -0.396875,0 L 1.4552083,1.8520834 0.92604166,2.38125 l -0.396875,0 0,-0.396875 L 1.0583333,1.4552083 0.52916666,0.92604165 Z" />
</g>
</svg>
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<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<svg xmlns:svg="http://www.w3.org/2000/svg" xmlns="http://www.w3.org/2000/svg" width="11" height="11" viewBox="0 0 2.9104166 2.9104168">
<g>
<rect style="opacity:1;fill:#000000;stroke-width:0.264583;stroke-linecap:square" width="1.3229167" height="0.26458332" x="0.79375005" y="1.3229167" />
</g>
</svg>
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:root {
--tk-control : #333333;
--tk-control-active : #555555;
--tk-control-border : #cccccc;
--tk-control-highlight : #444444;
--tk-control-shadow : #9b9b9b;
--tk-control-text : #cccccc;
--tk-desktop : #111111;
--tk-selected : #008542;
--tk-selected-blur : #325342;
--tk-selected-blur-text : #ffffff;
--tk-selected-text : #ffffff;
--tk-splitter-focus : #008542c0;
--tk-window : #222222;
--tk-window-blur-close : #d9aeae;
--tk-window-blur-close-text : #eeeeee;
--tk-window-blur-title : #9fafb9;
--tk-window-blur-title2 : #c0b0a0;
--tk-window-blur-title-text : #444444;
--tk-window-close : #ee9999;
--tk-window-close-focus : #99ee99;
--tk-window-close-focus-text: #333333;
--tk-window-close-text : #ffffff;
--tk-window-text : #cccccc;
--tk-window-title : #80ccff;
--tk-window-title2 : #ffb894;
--tk-window-title-text : #000000;
}

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<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<svg xmlns:svg="http://www.w3.org/2000/svg" xmlns="http://www.w3.org/2000/svg" width="11" height="11" viewBox="0 0 2.9104166 2.9104168">
<g>
<rect style="opacity:1;fill:#000000;stroke-width:0.264583;stroke-linecap:square" width="0.26458332" height="1.3229167" x="1.3229167" y="0.79375005" />
<rect style="opacity:1;fill:#000000;stroke-width:0.264583;stroke-linecap:square" width="1.3229167" height="0.26458332" x="0.79375005" y="1.3229167" />
</g>
</svg>
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<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<svg xmlns:svg="http://www.w3.org/2000/svg" xmlns="http://www.w3.org/2000/svg" width="11" height="11" viewBox="0 0 2.9104166 2.9104168" version="1.1">
<rect style="fill:#000000;stroke-width:0.264583;stroke-linecap:square" width="0.26458332" height="1.3229167" x="1.8555599" y="-1.1941016" transform="rotate(60)" />
<rect style="fill:#000000;stroke-width:0.264583;stroke-linecap:square" width="1.3229167" height="0.26458332" x="1.3263932" y="0.40035158" transform="rotate(30)" />
<rect style="fill:#000000;stroke-width:0.264583;stroke-linecap:square" width="0.26458332" height="1.3229167" x="-1.5875" y="0.79374999" transform="scale(-1,1)" />
</svg>
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:root {
--tk-font-dialog : "Roboto", sans-serif;
--tk-font-mono : "Inconsolata SemiExpanded Medium", monospace;
--tk-font-size : 12px;
}
@font-face {
font-family: "Roboto";
src : /**/url("./roboto.woff2") format("woff2");
}
@font-face {
font-family: "Inconsolata SemiExpanded Medium";
src : /**/url("./inconsolata.woff2") format("woff2");
}
body {
background: var(--tk-control);
}
.tk {
box-sizing : border-box;
font-family: var(--tk-font-dialog);
font-size : var(--tk-font-size);
line-height: 1em;
margin : 0;
outline : none; /* User agent focus indicator */
padding : 0;
}
table.tk {
border : none;
border-spacing: 0;
}
.tk.mono {
font-family: var(--tk-font-mono);
}
.tk::selection,
.tk *::selection {
background: var(--tk-selected);
color : var(--tk-selected-text);
}
.tk:not(:focus-within)::selection,
.tk *:not(:focus-within)::selection {
background: var(--tk-selected-blur);
color : var(--tk-selected-blur-text);
}
.tk.display {
background: var(--tk-desktop);
}
.tk.desktop {
background: var(--tk-desktop);
}
/********************************** Button ***********************************/
.tk.button {
align-items : stretch;
display : inline-grid;
grid-template-columns: auto;
justify-content : stretch;
padding : 0 1px 1px 0;
}
.tk.button .label {
align-items : center;
background : var(--tk-control);
border : 1px solid var(--tk-control-border);
box-shadow : 1px 1px 0 var(--tk-control-border);
color : var(--tk-control-text);
display : grid;
grid-template-columns: auto;
justify-content : center;
padding : 2px;
}
.tk.button:focus .label {
background: var(--tk-control-active);
}
.tk.button.pushed {
padding: 1px 0 0 1px;
}
.tk.button.pushed .label {
box-shadow: none;
}
.tk.button[aria-disabled="true"] .label {
color : var(--tk-control-shadow);
border : 1px solid var(--tk-control-shadow);
box-shadow: 1px 1px 0 var(--tk-control-shadow);
}
/********************************* Checkbox **********************************/
.tk.checkbox {
column-gap: 2px;
}
.tk.checkbox .box {
border: 1px solid var(--tk-control-shadow);
color : var(--tk-control-text);
}
.tk.checkbox:focus .box {
background: var(--tk-control-active);
}
.tk.checkbox .box:before {
background : transparent;
content : "";
display : block;
height : 10px;
mask : /**/url("./check.svg") center no-repeat;
-webkit-mask: /**/url("./check.svg") center no-repeat;
width : 10px;
}
.tk.checkbox[aria-checked="true"] .box:before {
background: currentcolor;
}
.tk.checkbox[aria-checked="mixed"] .box:before {
background : currentcolor;
mask : /**/url("./check2.svg") center no-repeat;
-webkit-mask: /**/url("./check2.svg") center no-repeat;
}
.tk.checkbox.pushed .box:before {
background: var(--tk-control-shadow);
}
.tk.checkbox[aria-disabled="true"] .box {
background: var(--tk-control);
color : var(--tk-control-shadow);
}
.tk.checkbox[aria-disabled="true"] .label {
color: var(--tk-control-shadow);
}
/********************************* DropDown **********************************/
.tk.drop-down {
background: var(--tk-window);
border : 1px solid var(--tk-control-shadow);
color : var(--tk-window-text);
padding : 2px;
}
.tk.drop-down:focus {
background: var(--tk-control-active);
}
.tk.drop-down[aria-disabled="true"] {
color: var(--tk-control-shadow);
}
/*********************************** Menus ***********************************/
.tk.menu-bar {
background : var(--tk-control);
border-bottom: 1px solid var(--tk-control-border);
color : var(--tk-control-text);
cursor : default;
padding : 2px;
position : relative;
}
.tk.menu {
background: var(--tk-control);
border : 1px solid var(--tk-control-border);
box-shadow: 1px 1px 0 var(--tk-control-border);
color : var(--tk-control-text);
margin : -1px 0 0 1px;
padding : 2px;
}
.tk.menu-item[aria-disabled="true"] {
color: var(--tk-control-shadow);
}
.tk.menu-item > * {
align-items: center;
border : 1px solid transparent;
column-gap : 4px;
display : flex;
margin : 0 1px 1px 0;
padding : 2px;
user-select: none;
}
.tk.menu-item .icon {
box-sizing: border-box;
height : 1em;
width : 1em;
}
.tk.menu-item .icon:before {
content: "";
display: block;
height : 100%;
width : 100%;
}
.tk.menu-bar > .menu-item .icon,
.tk.menu:not(.icons) > .menu-item .icon {
display: none;
}
.tk.menu-item.checkbox .icon {
border: 1px solid currentcolor;
}
.tk.menu-item.checkbox[aria-checked="true"] .icon:before {
background : currentcolor;
mask : /**/url("./check.svg") center no-repeat;
-webkit-mask: /**/url("./check.svg") center no-repeat;
}
.tk.menu-item .label {
flex-grow: 1;
}
.tk.menu-item:not([aria-expanded="true"],
[aria-disabled="true"], .pushed):hover > *,
.tk.menu-item:not([aria-expanded="true"], .pushed):focus > * {
border : 1px solid var(--tk-control-shadow);
box-shadow: 1px 1px 0 var(--tk-control-shadow);
}
.tk.menu-item:focus > * {
background: var(--tk-control-active);
}
.tk.menu-item.pushed > *,
.tk.menu-item[aria-expanded="true"] > * {
background: var(--tk-control-active);
border : 1px solid var(--tk-control-shadow);
box-shadow: none;
margin : 1px 0 0 1px;
}
.tk.menu > [role="separator"] {
border : solid var(--tk-control-shadow);
border-width: 1px 0 0 0;
margin : 4px 2px;
}
/*********************************** Radio ***********************************/
.tk.radio {
column-gap: 2px;
}
.tk.radio .box {
border : 1px solid var(--tk-control-shadow);
border-radius: 50%;
color : var(--tk-control-text);
margin : 1px;
}
.tk.radio:focus .box {
background: var(--tk-control-active);
}
.tk.radio .box:before {
background : transparent;
border-radius: 50%;
content : "";
display : block;
height : 4px;
margin : 2px;
width : 4px;
}
.tk.radio[aria-checked="true"] .box:before {
background: currentcolor;
}
.tk.radio.pushed .box:before {
background: var(--tk-control-shadow);
}
.tk.radio[aria-disabled="true"] .box {
background: var(--tk-control);
color : var(--tk-control-shadow);
}
.tk.radio[aria-disabled="true"] .label {
color: var(--tk-control-shadow);
}
/********************************* ScrollBar *********************************/
.tk.scroll-bar {
border : 1px solid var(--tk-control-shadow);
box-sizing: border-box;
}
.tk.scroll-bar .unit-less,
.tk.scroll-bar .unit-more {
background: var(--tk-control);
border : 0 solid var(--tk-control-shadow);
color : var(--tk-control-text);
height : 11px;
width : 11px;
}
.tk.scroll-bar[aria-orientation="horizontal"] .unit-less {
border-right-width: 1px;
}
.tk.scroll-bar[aria-orientation="horizontal"] .unit-more {
border-left-width: 1px;
}
.tk.scroll-bar[aria-orientation="vertical"] .unit-less {
border-bottom-width: 1px;
}
.tk.scroll-bar[aria-orientation="vertical"] .unit-more {
border-top-width: 1px;
}
.tk.scroll-bar .unit-less:before,
.tk.scroll-bar .unit-more:before {
background : currentColor;
content : "";
display : block;
height : 100%;
mask : /**/url("./scroll.svg") center no-repeat;
-webkit-mask: /**/url("./scroll.svg") center no-repeat;
width : 100%;
}
.tk.scroll-bar .unit-less.pushed:before,
.tk.scroll-bar .unit-more.pushed:before {
mask-size : 9px;
-webkit-mask-size: 9px;
}
.tk.scroll-bar[aria-orientation="horizontal"] .unit-less:before {
transform: rotate(-90deg);
}
.tk.scroll-bar[aria-orientation="horizontal"] .unit-more:before {
transform: rotate(90deg);
}
.tk.scroll-bar[aria-orientation="vertical"] .unit-more:before {
transform: rotate(180deg);
}
.tk.scroll-bar .track {
background: var(--tk-control-highlight);
}
.tk.scroll-bar .thumb {
background: var(--tk-control);
box-shadow: 0 0 0 1px var(--tk-control-shadow);
}
.tk.scroll-bar .block-less.pushed,
.tk.scroll-bar .block-more.pushed {
background: var(--tk-control-shadow);
opacity : 0.5;
}
.tk.scroll-bar:focus .unit-less,
.tk.scroll-bar:focus .unit-more,
.tk.scroll-bar:focus .thumb {
background: var(--tk-control-active);
}
.tk.scroll-bar[aria-disabled="true"] .unit-less,
.tk.scroll-bar[aria-disabled="true"] .unit-more,
.tk.scroll-bar.unneeded .unit-less,
.tk.scroll-bar.unneeded .unit-more,
.tk.scroll-bar[aria-disabled="true"] .thumb {
color: var(--tk-control-shadow);
}
.tk.scroll-bar.unneeded .thumb {
visibility: hidden;
}
/******************************** ScrollPane *********************************/
.tk.scroll-pane {
border: 1px solid var(--tk-control-shadow);
}
.tk.scroll-pane > .scroll-bar[aria-orientation="horizontal"] {
border-width: 1px 1px 0 0;
}
.tk.scroll-pane:not(.vertical) > .scroll-bar[aria-orientation="horizontal"] {
border-width: 1px 0 0 0;
}
.tk.scroll-pane > .scroll-bar[aria-orientation="vertical"] {
border-width: 0 0 1px 1px;
}
.tk.scroll-pane:not(.horizontal) > .scroll-bar[aria-orientation="vertical"] {
border-width: 0 0 0 1px;
}
.tk.scroll-pane > .viewport,
.tk.scroll-pane > .corner {
background: var(--tk-control);
}
/********************************* SplitPane *********************************/
.tk.split-pane > [role="separator"]:focus {
background: var(--tk-splitter-focus);
}
.tk.split-pane > .horizontal[role="separator"] {
width: 3px;
}
.tk.split-pane > .vertical[role="separator"] {
height: 3px;
}
/********************************** TextBox **********************************/
.tk.text-box {
background : var(--tk-window);
border : 1px solid var(--tk-control-border);
color : var(--tk-window-text);
line-height: 1em;
height : calc(1em + 2px);
padding : 0;
margin : 0;
min-width : 0;
}
.tk.text-box.[aria-disabled="true"] {
background: var(--tk-control-shadow);
color : var(--tk-window-text);
}
/********************************** Windows **********************************/
.tk.window {
background: var(--tk-control);
border : 1px solid var(--tk-control-shadow);
box-shadow: 1px 1px 0 var(--tk-control-shadow);
}
.tk.window:focus-within {
border : 1px solid var(--tk-control-border);
box-shadow: 1px 1px 0 var(--tk-control-border);
}
.tk.window > .nw1 { left : -2px; top : -2px; width : 8px; height: 3px; }
.tk.window > .nw2 { left : -2px; top : 1px; width : 3px; height: 5px; }
.tk.window > .n { left : 6px; top : -2px; right : 6px; height: 3px; }
.tk.window > .ne1 { right: -2px; top : -2px; width : 8px; height: 3px; }
.tk.window > .ne2 { right: -2px; top : 1px; width : 3px; height: 5px; }
.tk.window > .w { left : -2px; top : 6px; bottom: 6px; width : 3px; }
.tk.window > .e { right: -2px; top : 6px; bottom: 6px; width : 3px; }
.tk.window > .sw1 { left : -2px; bottom: -2px; width : 8px; height: 3px; }
.tk.window > .sw2 { left : -2px; bottom: 1px; width : 3px; height: 5px; }
.tk.window > .s { left : 6px; bottom: -2px; right : 6px; height: 3px; }
.tk.window > .se1 { right: -2px; bottom: -2px; width : 8px; height: 3px; }
.tk.window > .se2 { right: -2px; bottom: 1px; width : 3px; height: 5px; }
.tk.window > .title {
align-items : center;
background : var(--tk-window-blur-title);
border-bottom: 1px solid var(--tk-control-shadow);
color : var(--tk-window-blur-title-text);
padding : 1px;
user-select : none;
}
.tk.window:focus-within > .title {
background: var(--tk-window-title);
color : var(--tk-window-title-text);
}
.tk.window.two > .title {
background: var(--tk-window-blur-title2);
}
.tk.window.two:focus-within > .title {
background: var(--tk-window-title2);
}
.tk.window > .title .text {
cursor : default;
font-weight : bold;
overflow : hidden;
text-align : center;
text-overflow: ellipsis;
white-space : nowrap;
}
.tk.window > .title .close-button {
background: var(--tk-window-blur-close);
border : 1px solid var(--tk-control-shadow);
box-sizing: border-box;
color : var(--tk-window-close-text);
height : 13px;
width : 13px;
}
.tk.window:focus-within > .title .close-button {
background: var(--tk-window-close);
}
.tk.window > .title .close-button:focus {
background: var(--tk-window-close-focus);
color : var(--tk-window-close-focus-text);
outline : 1px solid var(--tk-control);
}
.tk.window > .title .close-button:before {
background : currentcolor;
content : "";
display : block;
height : 11px;
mask : /**/url("./close.svg") center no-repeat;
-webkit-mask: /**/url("./close.svg") center no-repeat;
width : 11px;
}
.tk.window > .title .close-button.pushed:before {
mask-size : 9px;
-webkit-mask-size: 9px;
}
.tk.window > .client {
overflow: hidden;
}

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:root {
--tk-control : #eeeeee;
--tk-control-active : #cccccc;
--tk-control-border : #000000;
--tk-control-highlight : #f8f8f8;
--tk-control-shadow : #6c6c6c;
--tk-control-text : #000000;
--tk-desktop : #cccccc;
--tk-selected : #008542;
--tk-selected-blur : #5e7d70;
--tk-selected-blur-text : #ffffff;
--tk-selected-text : #ffffff;
--tk-splitter-focus : #008542c0;
--tk-window : #ffffff;
--tk-window-blur-close : #d9aeae;
--tk-window-blur-close-text : #eeeeee;
--tk-window-blur-title : #aac4d5;
--tk-window-blur-title2 : #dbc4b8;
--tk-window-blur-title-text : #444444;
--tk-window-close : #ee9999;
--tk-window-close-focus : #99ee99;
--tk-window-close-focus-text: #333333;
--tk-window-close-text : #ffffff;
--tk-window-text : #000000;
--tk-window-title : #80ccff;
--tk-window-title2 : #ffb894;
--tk-window-title-text : #000000;
}

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<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<svg xmlns:svg="http://www.w3.org/2000/svg" xmlns="http://www.w3.org/2000/svg" width="10" height="10" viewBox="0 0 2.6458332 2.6458332" version="1.1">
<g>
<circle style="opacity:1;fill:#000000;stroke-width:0.264583;stroke-linecap:square" cx="1.3229166" cy="1.3229166" r="0.66145831" />
</g>
</svg>
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<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<svg xmlns:svg="http://www.w3.org/2000/svg" xmlns="http://www.w3.org/2000/svg" width="11" height="11" viewBox="0 0 2.9104166 2.9104167" version="1.1">
<g>
<path style="fill:#000000;fill-opacity:1;stroke:none;stroke-width:0.264583px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1" d="M 1.4552083,0.66145833 0.52916666,1.5874999 V 2.2489583 L 1.4552083,1.3229166 2.38125,2.2489583 V 1.5874999 Z" />
</g>
</svg>
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/******************************** CPU Window *********************************/
.tk.window.cpu .client {
padding: 1px;
}
.tk.window.cpu .scr-dasm {
border-right-width: 0;
box-shadow : 1px 0 0 var(--tk-control-shadow);
}
.tk.window.cpu .scr-system {
border-width: 1px 1px 0 0;
box-shadow : -0.5px 0.5px 0 0.5px var(--tk-control-shadow);
}
.tk.window.cpu .scr-program {
border-width: 0 1px 1px 0;
box-shadow : -0.5px -0.5px 0 0.5px var(--tk-control-shadow);
}
.tk.window.cpu .disassembler {
background : var(--tk-window);
color : var(--tk-window-text);
}
.tk.window.cpu .disassembler div {
cursor : default;
line-height: calc(1em + 2px);
isolation : isolate;
user-select: none;
}
.tk.window.cpu .disassembler .address {
margin-left: 2px;
}
.tk.window.cpu .disassembler .byte {
margin-left: 0.5em;
text-align : center;
}
.tk.window.cpu .disassembler .operands {
margin-right: 2px;
}
.tk.window.cpu .disassembler .byte.b0,
.tk.window.cpu .disassembler .mnemonic,
.tk.window.cpu .disassembler .operands {
margin-left: 1em;
}
.tk.window.cpu .disassembler .pc {
background: var(--tk-selected-blur);
left : 1px;
right : 1px;
}
.tk.window.cpu .disassembler:focus-within .pc {
background: var(--tk-selected);
}
.tk.window.cpu .disassembler .is-pc {
color: var(--tk-selected-blur-text);
}
.tk.window.cpu .disassembler:focus-within .is-pc {
color: var(--tk-selected-text);
}
.tk.window.cpu .registers {
background: var(--tk-window);
color : var(--tk-window-text);
}
.tk.window.cpu .registers > * {
padding: 0 1px;
}
.tk.window.cpu .registers > *:first-child {
padding-top: 1px;
}
.tk.window.cpu .registers > *:last-child {
padding-bottom: 1px;
}
.tk.window.cpu .registers .expand .box {
border : none;
border-radius: 2px;
margin : 0 1px 0 0;
}
.tk.window.cpu .registers .expand .box:before {
background: transparent;
content : "";
display : block;
height : 11px;
width : 11px;
}
.tk.window.cpu .registers .expand[role="checkbox"] .box:before {
background : currentcolor;
mask : /**/url("./expand.svg") center no-repeat;
-webkit-mask: /**/url("./expand.svg") center no-repeat;
}
.tk.window.cpu .registers .expand[aria-checked="true"] .box:before {
background : currentcolor;
mask : /**/url("./collapse.svg") center no-repeat;
-webkit-mask: /**/url("./collapse.svg") center no-repeat;
}
.tk.window.cpu .registers .expand:focus .box {
background: var(--tk-control-active);
}
.tk.window.cpu .registers .main {
column-gap: 0.5em;
}
.tk.window.cpu .registers .expansion {
gap : 1px 1em;
padding: 2px 2px 2px 1.4em;
}
.tk.window.cpu .registers .main {
column-gap: 0.5em;
}
.tk.window.cpu .registers .text-box {
background: transparent;
border : none;
padding : 0 1px;
}
.tk.window.cpu .registers .text-box:focus {
outline: 1px solid var(--tk-selected);
}
.tk.window.cpu .registers .text-dec {
column-gap: 2px;
}
.tk.window.cpu .registers .text-dec .label {
text-align: center;
min-width : 13px;
}
.tk.window.cpu .registers *[aria-disabled="true"]:is(.label, .text-box) {
color: var(--tk-control-shadow);
}
/******************************* Memory Window *******************************/
.tk.window.memory .client {
gap : 1px;
padding: 1px;
}
.tk.window.memory .hex-editor {
align-items: center;
background : var(--tk-window);
color : var(--tk-window-text);
}
.tk.window.memory .hex-editor div {
cursor : default;
line-height: calc(1em + 2px);
user-select: none;
}
.tk.window.memory .hex-editor .addr {
margin-left: 2px;
}
.tk.window.memory .hex-editor .byte {
margin-left: 0.5em;
text-align : center;
}
.tk.window.memory .hex-editor .b0,
.tk.window.memory .hex-editor .b8 {
margin-left: 1em;
}
.tk.window.memory .hex-editor .b15 {
margin-right: 2px;
}
.tk.window.memory .hex-editor .edit {
background: var(--tk-selected-blur);
color : var(--tk-selected-blur-text);
outline : 1px solid var(--tk-selected-blur);
}
.tk.window.memory .hex-editor:focus-within .edit {
background: var(--tk-selected);
color : var(--tk-selected-text);
outline : 1px solid var(--tk-selected);
}

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:root {
--tk-control : #000000;
--tk-control-active : #550000;
--tk-control-border : #ff0000;
--tk-control-highlight : #550000;
--tk-control-shadow : #aa0000;
--tk-control-text : #ff0000;
--tk-desktop : #000000;
--tk-selected : #aa0000;
--tk-selected-blur : #550000;
--tk-selected-blur-text : #ff0000;
--tk-selected-text : #000000;
--tk-splitter-focus : #ff0000aa;
--tk-window : #000000;
--tk-window-blur-close : #000000;
--tk-window-blur-close-text : #aa0000;
--tk-window-blur-title : #000000;
--tk-window-blur-title2 : #000000;
--tk-window-blur-title-text : #aa0000;
--tk-window-close : #550000;
--tk-window-close-focus : #ff0000;
--tk-window-close-focus-text: #550000;
--tk-window-close-text : #ff0000;
--tk-window-text : #ff0000;
--tk-window-title : #550000;
--tk-window-title2 : #550000;
--tk-window-title-text : #ff0000;
}
input, select {
filter: url("data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjxmaWx0ZXIgaWQ9InYiPjxmZUNvbG9yTWF0cml4IGluPSJTb3VyY2VHcmFwaGljIiB0eXBlPSJtYXRyaXgiIHZhbHVlcz0iMSAwIDAgMCAwIDAgMCAwIDAgMCAwIDAgMCAwIDAgMCAwIDAgMSAwIiAvPjwvZmlsdGVyPjwvc3ZnPg==#v");
}
.tk.scroll-bar .unit-less,
.tk.scroll-bar .unit-more,
.tk.scroll-bar .thumb {
background: #550000;
}
.tk.scroll-bar .track {
background: #000000;
}
.tk.scroll-bar:focus,
.tk.scroll-bar:focus .unit-less,
.tk.scroll-bar:focus .unit-more,
.tk.scroll-bar:focus .thumb {
background : #aa0000;
border-color: #ff0000;
color : #000000;
}
.tk.scroll-bar:focus .track {
background: #550000;
}
.tk.scroll-bar:focus .thumb {
box-shadow: 0 0 0 1px #ff0000;
}
.tk.window {
box-shadow: 1px 1px 0 #550000;
}
.tk.window:focus-within {
box-shadow: 1px 1px 0 #aa0000;
}

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let register = Toolkit => Toolkit.App =
// Root application container and localization manager
class App extends Toolkit.Component {
///////////////////////// Initialization Methods //////////////////////////
constructor(options) {
super(null, Object.assign({
tabIndex: -1
}, options));
// Configure instance fields
this.components = new Set();
this.dragElement = null;
this.lastFocus = null;
this.locale = null;
this.locales = new Map();
// Configure event handlers
this.addEventListener("focusin", e=>this.onFocus(e));
this.addEventListener("keydown", e=>this.onKey (e));
this.addEventListener("keyup" , e=>this.onKey (e));
}
///////////////////////////// Event Handlers //////////////////////////////
// Child element focus gained
onFocus(e) {
// Error checking
if (e.target != document.activeElement)
return;
// Target is self
if (e.target == this.element)
return this.restoreFocus();
// Ensure the child is not contained in a MenuBar
for (let elm = e.target; elm != this.element; elm = elm.parentNode) {
if (elm.getAttribute("role") == "menubar")
return;
}
// Track the (non-menu) element as the most recent focused component
this.lastFocus = e.target;
}
// Key press, key release
onKey(e) {
if (this.dragElement == null || e.rerouted)
return;
this.dragElement.dispatchEvent(Object.assign(new Event(e.type), {
altKey : e.altKey,
ctrlKey : e.ctrlKey,
key : e.key,
rerouted: true,
shiftKey: e.shiftKey
}));
}
///////////////////////////// Public Methods //////////////////////////////
// Install a locale from URL
async addLocale(url) {
let data;
// Load the file as JSON, using UTF-8 with or without a BOM
try { data = JSON.parse(new TextDecoder().decode(
await (await fetch(url)).arrayBuffer() )); }
catch { return null; }
// Error checking
if (!data.id || !data.name)
return null;
// Flatten the object to keys
let locale = new Map();
let entries = Object.entries(data);
let stack = [];
while (entries.length != 0) {
let entry = entries.shift();
// The value is a non-array object
if (entry[1] instanceof Object && !Array.isArray(entry[1])) {
entries = entries.concat(Object.entries(entry[1])
.map(e=>[ entry[0] + "." + e[0], e[1] ]));
}
// The value is a primitive or array
else locale.set(entry[0].toLowerCase(), entry[1]);
}
this.locales.set(data.id, locale);
return data.id;
}
// Specify a localization dictionary
setLocale(id) {
if (!this.locales.has(id))
return false;
this.locale = this.locales.get(id);
for (let comp of this.components)
comp.localize();
}
///////////////////////////// Package Methods /////////////////////////////
// Begin dragging on an element
get drag() { return this.dragElement; }
set drag(event) {
// Begin dragging
if (event) {
this.dragElement = event.currentTarget;
this.dragPointer = event.pointerId;
this.dragElement.setPointerCapture(event.pointerId);
}
// End dragging
else {
if (this.dragElement)
this.dragElement.releasePointerCapture(this.dragPointer);
this.dragElement = null;
this.dragPointer = null;
}
}
// Configure components for automatic localization, or localize a message
localize(a, b) {
return a instanceof Object ? this.localizeComponents(a, b) :
this.localizeMessage(a, b);
}
// Return focus to the most recent focused element
restoreFocus() {
// Error checking
if (!this.lastFocus)
return false;
// Unable to restore focus
if (!this.isVisible(this.lastFocus))
return false;
// Transfer focus to the most recent element
this.lastFocus.focus({ preventScroll: true });
return true;
}
///////////////////////////// Private Methods /////////////////////////////
// Configure components for automatic localization
localizeComponents(comps, add) {
// Process all components
for (let comp of (Array.isArray(comps) ? comps : [comps])) {
// Error checking
if (
!(comp instanceof Toolkit.Component) ||
!(comp.localize instanceof Function)
) continue;
// Update the collection and component text
this.components[add ? "add" : "delete"](comp);
comp.localize();
}
}
// Localize a message
localizeMessage(message, substs, circle = new Set()) {
let parts = [];
// Separate the substitution keys from the literal text
for (let x = 0;;) {
// Locate the start of the next substitution key
let y = message.indexOf("{", x);
let z = y == -1 ? -1 : message.indexOf("}", y + 1);
// No substitution key or malformed substitution expression
if (z == -1) {
parts.push(message.substring(z == -1 ? x : y));
break;
}
// Append the literal text and the substitution key
parts.push(message.substring(x, y), message.substring(y + 1, z));
x = z + 1;
}
// Process all substitutions
for (let x = 1; x < parts.length; x += 2) {
let key = parts[x].toLowerCase();
let value;
// The substitution key is already in the recursion chain
if (circle.has(key)) {
parts[x] = "{\u21ba" + key.toUpperCase() + "}";
continue;
}
// Resolve the substitution key from the argument
if (substs && substs.has(key)) {
value = substs.get(key);
// Do not recurse for this substitution
if (!value[1]) {
parts[x] = value[0];
continue;
}
// Substitution text
value = value[0];
}
// Resolve the substitution from the current locale
else if (this.locale && this.locale.has(key))
value = this.locale.get(key);
// A matching substitution key was not found
else {
parts[x] = "{\u00d7" + key.toUpperCase() + "}";
continue;
}
// Perform recursive substitution
circle.add(key);
parts[x] = this.localizeMessage(value, substs, circle);
circle.delete(key);
}
return parts.join("");
}
};
export { register };

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let register = Toolkit => Toolkit.Button =
// Push button
class Button extends Toolkit.Component {
///////////////////////// Initialization Methods //////////////////////////
constructor(app, options = {}) {
super(app, options = Object.assign({
class : "tk button",
role : "button",
tabIndex: "0"
}, options));
// Configure options
if ("disabled" in options)
this.disabled = options.disabled;
this.doNotFocus = !("doNotFocus" in options) || options.doNotFocus;
// Display text
this.content = new Toolkit.Label(app);
this.add(this.content);
// Event handlers
this.addEventListener("keydown" , e=>this.onKeyDown (e));
this.addEventListener("pointerdown", e=>this.onPointerDown(e));
this.addEventListener("pointermove", e=>this.onPointerMove(e));
this.addEventListener("pointerup" , e=>this.onPointerUp (e));
}
///////////////////////////// Event Handlers //////////////////////////////
// Key press
onKeyDown(e) {
if (
!(e.altKey || e.ctrlKey || e.shiftKey || this.disabled) &&
(e.key == " " || e.key == "Enter")
) this.activate();
}
// Pointer down
onPointerDown(e) {
// Gain focus
if (
!this.doNotFocus &&
this.isFocusable() &&
this.element != document.activeElement
) this.element.focus();
else e.preventDefault();
// Do not drag
if (
e.button != 0 ||
this.disabled ||
this.element.hasPointerCapture(e.pointerId)
) return;
// Begin dragging
this.element.setPointerCapture(e.pointerId);
this.element.classList.add("pushed");
Toolkit.handle(e);
}
// Pointer move
onPointerMove(e) {
// Do not drag
if (!this.element.hasPointerCapture(e.pointerId))
return;
// Process dragging
this.element.classList[this.isWithin(e) ? "add" : "remove"]("pushed");
Toolkit.handle(e);
}
// Pointer up
onPointerUp(e) {
// Do not activate
if (e.button != 0 || !this.element.hasPointerCapture(e.pointerId))
return;
// End dragging
this.element.releasePointerCapture(e.pointerId);
this.element.classList.remove("pushed");
Toolkit.handle(e);
// Activate the button if applicable
if (this.isWithin(e))
this.activate();
}
///////////////////////////// Public Methods //////////////////////////////
// Simulate a click on the button
activate() {
if (!this.disabled)
this.element.dispatchEvent(new Event("action"));
}
///////////////////////////// Package Methods /////////////////////////////
// Update localization strings
localize() {
this.localizeText(this.content);
this.localizeLabel();
this.localizeTitle();
}
}
export { register };

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let register = Toolkit => Toolkit.Checkbox =
// Check box
class Checkbox extends Toolkit.Component {
///////////////////////// Initialization Methods //////////////////////////
constructor(app, options = {}) {
super(app, options = Object.assign({
class : "tk checkbox",
role : "checkbox",
tabIndex: "0"
}, options, { style: Object.assign({
alignItems : "center",
display : "inline-grid",
gridTemplateColumns: "max-content auto"
}, options.style || {}) }));
// Configure element
this.element.setAttribute("aria-checked", "false");
this.addEventListener("keydown" , e=>this.onKeyDown (e));
this.addEventListener("pointerdown", e=>this.onPointerDown(e));
this.addEventListener("pointermove", e=>this.onPointerMove(e));
this.addEventListener("pointerup" , e=>this.onPointerUp (e));
// Icon area
this.box = document.createElement("div");
this.box.className = "tk box";
this.append(this.box);
// Display text
this.uiLabel = new Toolkit.Label(app);
this.add(this.uiLabel);
// Configure options
this.checked = options.checked;
this.disabled = !!options.disabled;
this.instant = !!options.instant;
}
///////////////////////////// Event Handlers //////////////////////////////
// Key press
onKeyDown(e) {
if (
!(e.altKey || e.ctrlKey || e.shiftKey || this.disabled) &&
(e.key == " " || e.key == "Enter")
) this.setChecked(!this.checked);
}
// Pointer down
onPointerDown(e) {
// Gain focus
if (!this.disabled)
this.element.focus();
else e.preventDefault();
// Do not drag
if (
e.button != 0 ||
this.disabled ||
this.element.hasPointerCapture(e.pointerId)
) return;
// Begin dragging
this.element.setPointerCapture(e.pointerId);
// Use instant activation
if (this.instant)
return this.onPointerUp(e);
// Do not use instant activation
this.element.classList.add("pushed");
Toolkit.handle(e);
}
// Pointer move
onPointerMove(e) {
// Do not drag
if (!this.element.hasPointerCapture(e.pointerId))
return;
// Process dragging
this.element.classList[this.isWithin(e) ? "add" : "remove"]("pushed");
Toolkit.handle(e);
}
// Pointer up
onPointerUp(e) {
// Do not activate
if (e.button != 0 || !this.element.hasPointerCapture(e.pointerId))
return;
// End dragging
this.element.releasePointerCapture(e.pointerId);
this.element.classList.remove("pushed");
Toolkit.handle(e);
// Activate the check box if applicable
if (this.isWithin(e))
this.setChecked(this.checked !== true);
}
///////////////////////////// Public Methods //////////////////////////////
// The check box is checked
get checked() {
let ret = this.element.getAttribute("aria-checked");
return ret == "mixed" ? ret : ret == "true";
}
set checked(checked) {
checked = checked == "mixed" ? checked : !!checked;
if (checked == this.checked)
return;
this.element.setAttribute("aria-checked", checked);
}
// Specify the display text
setText(text, localize) {
this.uiLabel.setText(text, localize);
}
///////////////////////////// Package Methods /////////////////////////////
// Update localization strings
localize() {
this.uiLabel.localize();
this.localizeTitle();
}
///////////////////////////// Private Methods /////////////////////////////
// Specify the checked state
setChecked(checked) {
checked = !!checked;
if (checked == this.checked)
return;
let previous = this.checked
this.checked = checked;
this.element.dispatchEvent(
Object.assign(new Event("input"), { previous: previous }));
}
}
export { register };

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let register = Toolkit => Toolkit.Component =
// Base class from which all toolkit components are derived
class Component {
//////////////////////////////// Constants ////////////////////////////////
// Non-attributes
static NON_ATTRIBUTES = new Set([
"checked", "disabled", "doNotFocus", "group", "hover", "max", "min",
"name", "orientation", "overflowX", "overflowY", "tag", "text",
"value", "view", "visibility", "visible"
]);
///////////////////////// Initialization Methods //////////////////////////
constructor(app, options = {}) {
// Configure element
this.element = document.createElement(options.tag || "div");
this.element.component = this;
for (let entry of Object.entries(options)) {
if (
Toolkit.Component.NON_ATTRIBUTES.has(entry[0]) ||
entry[0] == "type" && options.tag != "input"
) continue;
if (entry[0] == "style" && entry[1] instanceof Object)
Object.assign(this.element.style, entry[1]);
else this.element.setAttribute(entry[0], entry[1]);
}
// Configure instance fields
this._isLocalized = false;
this.app = app;
this.display = options.style && options.style.display;
this.style = this.element.style;
this.text = null;
this.visibility = !!options.visibility;
this.visible = !("visible" in options) || options.visible;
}
///////////////////////////// Public Methods //////////////////////////////
// Add a child component
add(comp) {
// Error checking
if (
!(comp instanceof Toolkit.Component) ||
comp instanceof Toolkit.App ||
comp.app != (this.app || this)
) return false;
// No components have been added yet
if (!this.children)
this.children = [];
// The child already has a parent: remove it
if (comp.parent) {
comp.parent.children.splice(
comp.parent.children.indexOf(comp), 1);
}
// Add the component to self
this.children.push(comp);
this.append(comp.element);
comp.parent = this;
return true;
}
// Register an event listener on the element
addEventListener(type, listener) {
// No event listeners have been registered yet
if (!this.listeners)
this.listeners = new Map();
if (!this.listeners.has(type))
this.listeners.set(type, []);
// The listener has already been registered for this event
let listeners = this.listeners.get(type);
if (listeners.indexOf(listener) != -1)
return listener;
// Resize events are implemented by a ResizeObserver
if (type == "resize") {
if (!this.resizeObserver) {
this.resizeObserver = new ResizeObserver(()=>
this.element.dispatchEvent(new Event("resize")));
this.resizeObserver.observe(this.element);
}
}
// Visibility events are implemented by an IntersectionObserver
else if (type == "visibility") {
if (!this.visibilityObserver) {
this.visibilityObserver = new IntersectionObserver(
()=>this.element.dispatchEvent(Object.assign(
new Event("visibility"),
{ visible: this.isVisible() }
)),
{ root: document.body }
);
this.visibilityObserver.observe(this.element);
}
}
// Register the listener with the element
listeners.push(listener);
this.element.addEventListener(type, listener);
return listener;
}
// Component cannot be interacted with
get disabled() { return this.element.hasAttribute("disabled"); }
set disabled(disabled) { this.setDisabled(disabled); }
// Move focus into the component
focus() {
this.element.focus({ preventScroll: true });
}
// Specify whether the component is localized
get isLocalized() { return this._isLocalized; }
set isLocalized(isLocalized) {
if (isLocalized == this._isLocalized)
return;
this._isLocalized = isLocalized;
(this instanceof Toolkit.App ? this : this.app)
.localize(this, isLocalized);
}
// Determine whether an element is actually visible
isVisible(element = this.element) {
if (!document.body.contains(element))
return false;
for (; element instanceof Element; element = element.parentNode) {
let style = getComputedStyle(element);
if (style.display == "none" || style.visibility == "hidden")
return false;
}
return true;
}
// Produce an ordered list of registered event listeners for an event type
listEventListeners(type) {
return this.listeners && this.listeners.has(type) &&
this.listeners.get(type).list.slice() || [];
}
// Remove a child component
remove(comp) {
if (comp.parent != this || !this.children)
return false;
let index = this.children.indexOf(comp);
if (index == -1)
return false;
this.children.splice(index, 1);
comp.element.remove();
comp.parent = null;
return true;
}
// Unregister an event listener from the element
removeEventListener(type, listener) {
// Not listening to events of the specified type
if (!this.listeners || !this.listeners.has(type))
return listener;
// Listener is not registered
let listeners = this.listeners.get(type);
let index = listeners.indexOf(listener);
if (index == -1)
return listener;
// Unregister the listener
this.element.removeEventListener(listener);
listeners.splice(index, 1);
// Delete the ResizeObserver
if (
type == "resize" &&
listeners.list.length == 0 &&
this.resizeObserver
) {
this.resizeObserver.disconnect();
delete this.resizeObserver;
}
// Delete the IntersectionObserver
else if (
type == "visibility" &&
listeners.list.length == 0 &&
this.visibilityObserver
) {
this.visibilityObserver.disconnect();
delete this.visibilityObserver;
}
return listener;
}
// Specify accessible name
setLabel(text, localize) {
// Label is another component
if (
text instanceof Toolkit.Component ||
text instanceof HTMLElement
) {
this.element.setAttribute("aria-labelledby",
(text.element || text).id);
this.setString("label", null, false);
}
// Label is the given text
else {
this.element.removeAttribute("aria-labelledby");
this.setString("label", text, localize);
}
}
// Specify role description text
setRoleDescription(text, localize) {
this.setString("roleDescription", text, localize);
}
// Specify inner text
setText(text, localize) {
this.setString("text", text, localize);
}
// Specify tooltip text
setTitle(text, localize) {
this.setString("title", text, localize);
}
// Specify substitution text
substitute(key, text = null, recurse = false) {
if (text === null) {
if (this.substitutions.has(key))
this.substitutions.delete(key);
} else this.substitutions.set(key, [ text, recurse ]);
if (this.localize instanceof Function)
this.localize();
}
// Determine whether the element wants to be visible
get visible() {
let style = this.element.style;
return style.display != "none" && style.visibility != "hidden";
}
// Specify whether the element is visible
set visible(visible) {
visible = !!visible;
// Visibility is not changing
if (visible == this.visible)
return;
let comps = [ this ].concat(
Array.from(this.element.querySelectorAll("*"))
.map(c=>c.component)
).filter(c=>
c instanceof Toolkit.Component &&
c.listeners &&
c.listeners.has("visibility")
)
;
let prevs = comps.map(c=>c.isVisible());
// Allow the component to be shown
if (visible) {
if (!this.visibility) {
if (this.display)
this.element.style.display = this.display;
else this.element.style.removeProperty("display");
} else this.element.style.removeProperty("visibility");
}
// Prevent the component from being shown
else {
this.element.style.setProperty(
this.visibility ? "visibility" : "display",
this.visibility ? "hidden" : "none"
);
}
for (let x = 0; x < comps.length; x++) {
let comp = comps[x];
visible = comp.isVisible();
if (visible == prevs[x])
continue;
comp.element.dispatchEvent(Object.assign(
new Event("visibility"),
{ visible: visible }
));
}
}
///////////////////////////// Package Methods /////////////////////////////
// Add a child component to the primary client region of this component
append(element) {
this.element.append(element instanceof Toolkit.Component ?
element.element : element);
}
// Determine whether a component or element is a child of this component
contains(child) {
return this.element.contains(child instanceof Toolkit.Component ?
child.element : child);
}
// Generate a list of focusable descendant elements
getFocusable(element = this.element) {
let cache;
return Array.from(element.querySelectorAll(
"*:is(a[href],area,button,details,input,textarea,select," +
"[tabindex='0']):not([disabled])"
)).filter(e=>{
for (; e instanceof Element; e = e.parentNode) {
let style =
(cache || (cache = new Map())).get(e) ||
cache.set(e, getComputedStyle(e)).get(e)
;
if (style.display == "none" || style.visibility == "hidden")
return false;
}
return true;
});
}
// Specify the inner text of the primary client region of this component
get innerText() { return this.element.textContent; }
set innerText(text) { this.element.innerText = text; }
// Determine whether an element is focusable
isFocusable(element = this.element) {
return element.matches(
":is(a[href],area,button,details,input,textarea,select," +
"[tabindex='0'],[tabindex='-1']):not([disabled])"
);
}
// Determine whether a pointer event is within the element
isWithin(e, element = this.element) {
let bounds = element.getBoundingClientRect();
return (
e.clientX >= bounds.left && e.clientX < bounds.right &&
e.clientY >= bounds.top && e.clientY < bounds.bottom
);
}
// Common processing for localizing the accessible name
localizeLabel(element = this.element) {
// There is no label or the label is another element
if (!this.label || element.hasAttribute("aria-labelledby")) {
element.removeAttribute("aria-label");
return;
}
// Localize the label
let text = this.label;
text = !text[1] ? text[0] :
this.app.localize(text[0], this.substitutions);
element.setAttribute("aria-label", text);
}
// Common processing for localizing the accessible role description
localizeRoleDescription(element = this.element) {
// There is no role description
if (!this.roleDescription) {
element.removeAttribute("aria-roledescription");
return;
}
// Localize the role description
let text = this.roleDescription;
text = !text[1] ? text[0] :
this.app.localize(text[0], this.substitutions);
element.setAttribute("aria-roledescription", text);
}
// Common processing for localizing inner text
localizeText(element = this.element) {
// There is no title
if (!this.text) {
element.innerText = "";
return;
}
// Localize the text
let text = this.text;
text = !text[1] ? text[0] :
this.app.localize(text[0], this.substitutions);
element.innerText = text;
}
// Common processing for localizing the tooltip text
localizeTitle(element = this.element) {
// There is no title
if (!this.title) {
element.removeAttribute("title");
return;
}
// Localize the title
let text = this.title;
text = !text[1] ? text[0] :
this.app.localize(text[0], this.substitutions);
element.setAttribute("title", text);
}
// Common handler for configuring whether the component is disabled
setDisabled(disabled, element = this.element) {
element[disabled ? "setAttribute" : "removeAttribute"]
("disabled", "");
element.setAttribute("aria-disabled", disabled ? "true" : "false");
}
// Specify display text
setString(key, value, localize = true) {
// There is no method to update the display text
if (!(this.localize instanceof Function))
return;
// Working variables
let app = this instanceof Toolkit.App ? this : this.app;
// Remove the string
if (value === null) {
if (app && this[key] != null && this[key][1])
app.localize(this, false);
this[key] = null;
}
// Set or replace the string
else {
if (app && localize && (this[key] == null || !this[key][1]))
app.localize(this, true);
this[key] = [ value, localize ];
}
// Update the display text
this.localize();
}
// Retrieve the substitutions map
get substitutions() {
if (!this._substitutions)
this._substitutions = new Map();
return this._substitutions;
}
};
export { register };

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let register = Toolkit => Toolkit.Desktop =
// Layered window manager
class Desktop extends Toolkit.Component {
//////////////////////////////// Constants ////////////////////////////////
// Comparator for ordering child windows
static CHILD_ORDER(a, b) {
return b.element.style.zIndex - a.element.style.zIndex;
}
///////////////////////// Initialization Methods //////////////////////////
constructor(app, options = {}) {
super(app, Object.assign({
class: "tk desktop"
}, options, { style: Object.assign({
position: "relative",
zIndex : "0"
}, options.style || {})} ));
// Configure event listeners
this.addEventListener("resize", e=>this.onResize());
}
///////////////////////////// Event Handlers //////////////////////////////
// Element resized
onResize() {
// The element is hidden: its size is indeterminate
if (!this.isVisible())
return;
// Don't allow children to be out-of-frame
if (this.children != null) {
for (let child of this.children) {
child.left = child.left;
child.top = child.top;
}
}
}
///////////////////////////// Public Methods //////////////////////////////
// Add a child component
add(comp) {
super.add(comp);
this.bringToFront(comp);
}
// Retrieve the foremost visible window
getActiveWindow() {
if (this.children != null) {
for (let child of this.children) {
if (child.isVisible())
return child;
}
}
return null;
}
///////////////////////////// Package Methods /////////////////////////////
// Reorder children so that a particular child is in front
bringToFront(child) {
this.children.splice(this.children.indexOf(child), 1);
this.children.push(child);
let z = 1 - this.children.length;
for (let child of this.children)
child.element.style.zIndex = z++;
}
}
export { register };

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let register = Toolkit => Toolkit.DropDown =
class DropDown extends Toolkit.Component {
///////////////////////// Initialization Methods //////////////////////////
constructor(app, options = {}) {
super(app, Object.assign({
class: "tk drop-down",
tag : "select"
}, options));
// Configure instance fields
this.items = [];
}
///////////////////////////// Public Methods //////////////////////////////
// Add an item
add(text, localize, value) {
// Record the item data
this.items.push([ text, localize, value ]);
// Add an <option> element
let option = document.createElement("option");
this.element.append(option);
option.innerText = !localize ? text :
this.app.localize(text, this.substitutions);
}
// Remove all items
clear() {
this.items.splice(0);
this.element.replaceChildren();
this.element.selectedIndex = -1;
}
// Retrieve an item
get(index) {
// Error checking
if (index < 0 || index >= this.items.length)
return null;
// Return the item as an item with properties
let item = this.items[item];
return {
localize: item[1],
text : item[0],
value : item[2]
};
}
// Number of items in the list
get length() { return this.items.length; }
set length(v) { }
// Remove an item
remove(index) {
// Error checking
if (index < 0 || index >= this.length)
return;
// Determine what selectedIndex will be after the operation
let newIndex = index;
if (
newIndex <= this.selectedIndex ||
newIndex == this.length - 1
) newIndex--;
if (
newIndex == -1 &&
this.length != 0
) newIndex = 0;
// Remove the item
this.items.splice(index, 1);
this.element.options[index].remove();
this.element.selectedIndex = newIndex;
}
// Index of the currently selected item
get selectedIndex() { return this.element.selectedIndex; }
set selectedIndex(index) {
if (index < -1 || index >= this.items.length)
return this.element.selectedIndex;
return this.element.selectedIndex = index;
}
// Update an item
set(index, text, localize) {
// Error checking
if (index < 0 || index >= this.items.length)
return;
// Replace the item data
this.items[index] = [ text, localize ];
// Configure the <option> element
this.element.options[index].innerText = !localize ? text :
this.app.localize(text, this.substitutions);
}
// Update the selectedIndex property, firing an event
setSelectedIndex(index) {
// Error checking
if (index < -1 || index >= this.items.length)
return this.selectedIndex;
// Update the element and fire an event
this.element.selectedIndex = index;
this.element.dispatchEvent(new Event("input"));
return index;
}
// Currently selected value
get value() {
return this.selectedIndex == -1 ? null :
this.items[this.selectedIndex][2];
}
set value(value) {
let index = this.items.findIndex(i=>i[2] == value);
if (index != -1)
this.selectedIndex = index;
}
///////////////////////////// Package Methods /////////////////////////////
// Update localization strings
localize() {
// Label and title
this.localizeLabel();
this.localizeTitle();
// Items
for (let x = 0; x < this.items.length; x++) {
let item = this.items[x];
this.element.options[x].innerText = !item[1] ? item[0] :
this.app.localize(item[0], this.substitutions);
}
}
}
export { register };

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let register = Toolkit => Toolkit.Label =
// Presentational text
class Label extends Toolkit.Component {
///////////////////////// Initialization Methods //////////////////////////
constructor(app, options = {}, autoId = false) {
super(app, Object.assign({
class: "tk label"
}, options, { style: Object.assign({
cursor : "default",
userSelect: "none",
whiteSpace: "nowrap"
}, options.style || {}) }));
// Configure instance fields
if (autoId)
this.id = Toolkit.id();
}
///////////////////////////// Public Methods //////////////////////////////
// Specify the display text
setText(text, localize) {
this.setString("text", text, localize);
}
///////////////////////////// Package Methods /////////////////////////////
// Update localization strings
localize() {
if (this.text != null) {
let text = this.text;
this.element.innerText = !text[1] ? text[0] :
this.app.localize(text[0], this.substitutions);
}
}
}
export { register };

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let register = Toolkit => Toolkit.Menu =
// Pop-up menu container
class Menu extends Toolkit.Component {
///////////////////////// Initialization Methods //////////////////////////
constructor(app, options = {}) {
super(app, Object.assign({
class : "tk menu",
id : Toolkit.id(),
role : "menu",
visibility: true,
visible : false
}, options, { style: Object.assign({
display : "inline-flex",
flexDirection: "column",
position : "absolute",
zIndex : "1"
}, options.style || {}) }));
// Configure instance fields
this.parent = null;
// Configure event handlers
this.addEventListener("focusout", e=>this.onBlur(e));
}
///////////////////////////// Event Handlers //////////////////////////////
// Child blur
onBlur(e) {
if (this.parent instanceof Toolkit.MenuItem)
this.parent.onBlur(e);
}
///////////////////////////// Public Methods //////////////////////////////
// Add a child menu item
add(item) {
if (!(item instanceof Toolkit.MenuItem) || !super.add(item))
return false;
this.detectIcons();
return true;
}
// Add a sepearator
addSeparator() {
let item = new Toolkit.Component(this.app, { role: "separator" });
super.add(item);
return item;
}
// Remove the menu from its parent menu item or remove a child menu item
remove() {
// Remove child
if (arguments.length != 0) {
if (!super.remove.apply(this, arguments))
return false;
this.detectIcons();
return true;
}
// Remove from parent
this.parent = null;
this.element.remove();
this.element.removeAttribute("aria-labelledby");
this.setVisible(false);
return null;
}
///////////////////////////// Package Methods /////////////////////////////
// Show or hide the icons column
detectIcons() {
this.element.classList[
this.children && this.children.find(i=>
i.visible && i.type == "checkbox") ?
"add" : "remove"
]("icons");
}
};
export { register };

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let register = Toolkit => Toolkit.MenuBar =
// Application menu bar
class MenuBar extends Toolkit.Menu {
///////////////////////// Initialization Methods //////////////////////////
constructor(app, options = {}) {
super(app, Object.assign({
class : "tk menu-bar",
role : "menubar",
visibility: false,
visible : true
}, options, { style: Object.assign({
display : "flex",
flexDirection: "row",
minWidth : "0",
position : "inline"
}, options.style || {}) }));
// Configure event handlers
this.addEventListener("focusout", e=>this.onBlur (e));
this.addEventListener("focusin" , e=>this.onFocus(e));
}
///////////////////////////// Event Handlers //////////////////////////////
// Child blur
onBlur(e) {
if (
this.contains(e.relatedTarget) ||
!this.children || this.children.length == 0
) return;
this.children.forEach(i=>i.expanded = false);
this.children[0].element.setAttribute("tabindex", "0");
}
// Child focus
onFocus(e) {
if (!this.children || this.children.length == 0)
return;
this.children[0].element.setAttribute("tabindex", "-1");
}
///////////////////////////// Public Methods //////////////////////////////
// Add a menu item
add(item) {
super.add(item);
if (item.menu)
this.element.append(item.menu.element);
this.children[0].element.setAttribute("tabindex", "0");
}
// Move focus into the component
focus() {
if (this.children.length != 0)
this.children[0].focus();
}
// Remove a menu item
remove(item) {
// Remove the menu item
if (item.parent == this && item.menu)
item.menu.remove();
super.remove(item);
// Configure focusability
if (this.children && !this.contains(document.activeElement)) {
for (let x = 0; x < this.children.length; x++) {
this.children[x].element
.setAttribute("tabindex", x == 0 ? "0" : "-1");
}
}
}
///////////////////////////// Package Methods /////////////////////////////
// Return focus to the application
blur() {
if (this.children) {
for (let item of this.children) {
item.expanded = false;
item.element.blur();
}
}
if (!this.parent || !this.parent.restoreFocus())
this.focus();
}
// Update localization strings
localize() {
this.localizeLabel(this.element);
}
}
export { register };

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let register = Toolkit => Toolkit.MenuItem =
// Selection within a MenuBar or Menu
class MenuItem extends Toolkit.Component {
///////////////////////// Initialization Methods //////////////////////////
constructor(app, options = {}) {
super(app, options = Object.assign({
class : "tk menu-item",
id : Toolkit.id(),
role : "menuitem",
tabIndex: "-1"
}, options));
// Configure instance fields
this._expanded = false;
this._menu = null;
// Element
this.content = document.createElement("div");
this.element.append(this.content);
this.disabled = options.disabled;
// Icon column
this.icon = document.createElement("div");
this.icon.className = "icon";
this.content.append(this.icon);
// Label column
this.label = document.createElement("div");
this.label.className = "label";
this.content.append(this.label);
// Control type
switch (options.type) {
case "checkbox":
this.type = "checkbox";
this.checked = !!options.checked;
break;
default:
this.type = "normal";
}
// Event handlers
this.addEventListener("focusout" , e=>this.onBlur (e));
this.addEventListener("keydown" , e=>this.onKeyDown (e));
this.addEventListener("pointerdown", e=>this.onPointerDown(e));
this.addEventListener("pointermove", e=>this.onPointerMove(e));
this.addEventListener("pointerup" , e=>this.onPointerUp (e));
}
///////////////////////////// Event Handlers //////////////////////////////
// Focus lost
onBlur(e) {
if (this.menu && !this.contains(e.relatedTarget))
this.expanded = false;
}
// Key press
onKeyDown(e) {
// Do not process the event
if (e.altKey || e.ctrlKey || e.shiftKey)
return;
// Working variables
let isBar = this.parent && this.parent instanceof Toolkit.MenuBar;
let next = isBar ? "ArrowRight": "ArrowDown";
let prev = isBar ? "ArrowLeft" : "ArrowUp";
let siblings = this.parent && this.parent.children ?
this.parent.children
.filter(i=>i instanceof Toolkit.MenuItem && i.visible) :
[ this ];
let index = siblings.indexOf(this);
let handled = false;
// Process by relative key code
switch (e.key) {
// Select the next sibling
case next:
index = index == -1 ? 0 :
(index + 1) % siblings.length;
if (index < siblings.length) {
let sibling = siblings[index];
if (isBar && sibling.menu && this.expanded)
sibling.expanded = true;
sibling.focus();
}
handled = true;
break;
// Select the previous sibling
case prev:
index = index == -1 ? 0 :
(index + siblings.length - 1) % siblings.length;
if (index < siblings.length) {
let sibling = siblings[index];
if (isBar && sibling.menu && this.expanded)
sibling.expanded = true;
sibling.focus();
}
handled = true;
break;
}
// Process by absolute key code
if (!handled) switch (e.key) {
// Activate the menu item with handling for checks and radios
case " ":
this.activate(false);
break;
// Activate the menu item if in a MenuBar
case "ArrowDown":
if (isBar && this.menu)
this.activate();
break;
// Cycle through menu items in a MenuBar
case "ArrowLeft":
case "ArrowRight": {
let root = this.getRoot();
if (!(root instanceof Toolkit.MenuBar))
break;
let top = root.children.find(i=>i.expanded);
if (top)
return top.onKeyDown(e);
break;
}
// Select the last sibling
case "End":
if (siblings.length != 0)
siblings[siblings.length - 1].focus();
break;
// Activate the menu item
case "Enter":
this.activate();
break;
// Deactivate the menu and return to the parent menu item
case "Escape": {
if (this.expanded)
this.expanded = false;
else if (this.parent &&
this.parent.parent instanceof Toolkit.MenuItem) {
this.parent.parent.expanded = false;
this.parent.parent.focus();
} else if (this.parent instanceof Toolkit.MenuBar)
this.parent.blur();
break;
}
// Select the first sibling
case "Home":
if (siblings.length != 0)
siblings[0].focus();
break;
// Select the next menu item that begins with the typed character
default: {
if (e.key.length != 1)
return;
let key = e.key.toLowerCase();
for (let x = 0; x < siblings.length; x++) {
let sibling = siblings[(index + x + 1) % siblings.length];
if (
(sibling.content.textContent || " ")[0]
.toLowerCase() == key
) {
if (sibling.menu)
sibling.expanded = true;
if (sibling.menu && sibling.menu.children &&
sibling.menu.children[0])
sibling.menu.children[0].focus();
else sibling.focus();
handled = true;
break;
}
}
if (!handled)
return;
}
}
Toolkit.handle(e);
}
// Pointer down
onPointerDown(e) {
this.focus();
// Do not process the event
if (e.button != 0 || this.element.hasPointerCapture(e.pointerId))
return;
if (this.disabled)
return Toolkit.handle(e);
// Does not contain a menu
if (!this.menu) {
this.element.setPointerCapture(e.pointerId);
this.element.classList.add("pushed");
}
// Does contain a menu
else this.expanded = !this.expanded;
Toolkit.handle(e);
}
// Pointer move
onPointerMove(e) {
// Do not process the event
if (this.disabled)
return Toolkit.handle(e);
// Not dragging within element
if (!this.element.hasPointerCapture(e.pointerId)) {
let other = this.parent&&this.parent.children.find(i=>i.expanded);
if (other && other != this) {
this.expanded = true;
this.focus();
}
}
// Dragging within element
else this.element.classList
[this.isWithin(e) ? "add" : "remove"]("pushed");
Toolkit.handle(e);
}
// Pointer up
onPointerUp(e) {
// Do not process the event
if (e.button != 0)
return;
if (this.disabled)
return Toolkit.handle(e);
// Stop dragging
if (this.element.hasPointerCapture(e.pointerId)) {
this.element.releasePointerCapture(e.pointerId);
this.element.classList.remove("pushed");
}
// Activate the menu item
if (!this.menu && this.isWithin(e))
this.activate();
Toolkit.handle(e);
}
///////////////////////////// Public Methods //////////////////////////////
// Specify whether or not the checkbox is checked
get checked() { return this._checked; }
set checked(checked) {
checked = !!checked;
if (checked === this._checked || this._type != "checkbox")
return;
this._checked = checked;
this.element.setAttribute("aria-checked", checked ? "true" : "false");
}
// Determine whether a component or element is a child of this component
contains(child) {
return super.contains(child) || this.menu && this.menu.contains(child);
}
// Enable or disable the control
get disabled() { return this._disabled; }
set disabled(disabled) {
disabled = !!disabled;
// Error checking
if (disabled === this._disabled)
return;
// Enable or disable the control
this._disabled = disabled;
this.element[disabled ? "setAttribute" : "removeAttribute"]
("aria-disabled", "true");
if (disabled)
this.expanded = false;
}
// Expand or collapse the menu
get expanded() { return this._expanded; }
set expanded(expanded) {
expanded = !!expanded;
// Error checking
if (this._expanded == expanded || !this.menu)
return;
// Configure instance fields
this._expanded = expanded;
// Expand the menu
if (expanded) {
let bounds = this.element.getBoundingClientRect();
Object.assign(this.menu.element.style, {
left: bounds.left + "px",
top : bounds.bottom + "px"
});
this.menu.visible = true;
this.element.setAttribute("aria-expanded", "true");
}
// Collapse the menu and all child sub-menus
else {
this.menu.visible = false;
this.element.setAttribute("aria-expanded", "false");
if (this.children)
this.children.forEach(i=>i.expanded = false);
}
}
// Specify a new menu
get menu() { return this._menu; }
set menu(menu) {
// Error checking
if (menu == this._menu || menu && menu.parent && menu.parent != this)
return;
// Remove the current menu
if (this._menu) {
this.expanded = false;
this._menu.remove();
}
// Configure as regular menu item
if (!menu) {
this.element.removeAttribute("aria-expanded");
this.element.removeAttribute("aria-haspopup");
return;
}
// Associate the menu with the item
this._menu = menu;
menu.parent = this;
if (this.parent)
this.element.after(menu.element);
menu.element.setAttribute("aria-labelledby", this.element.id);
}
// Specify display text
setText(text, localize) {
this.setString("text", text, localize);
}
// Specify the menu item type
get type() { return this._type; }
set type(type) {
switch (type) {
case "checkbox":
if (this._type == "checkbox")
break;
this._type = "checkbox";
this.checked = null;
this.element.classList.add("checkbox");
break;
default:
if (this._type == "normal")
break;
this._type = "normal";
this._checked = false;
this.element.classList.remove("checkbox");
this.element.removeAttribute("aria-checked");
}
}
// Specify whether the element is visible
get visible() { return super.visible; }
set visible(visible) {
super.visible = visible = !!visible;
if (this.parent instanceof Toolkit.Menu)
this.parent.detectIcons();
}
///////////////////////////// Package Methods /////////////////////////////
// Update localization strings
localize() {
if (this.text != null) {
let text = this.text;
this.label.innerText = !text[1] ? text[0] :
this.app.localize(text[0], this.substitutions);
} else this.label.innerText = "";
}
///////////////////////////// Private Methods /////////////////////////////
// Activate the menu item
activate(blur = true) {
// Error checking
if (this.disabled)
return;
// Expand the sub-menu
if (this.menu) {
this.expanded = true;
if (this.menu.children && this.menu.children[0])
this.menu.children[0].focus();
else this.focus();
}
// Activate the menu item
else {
this.element.dispatchEvent(Toolkit.event("action"));
if (this.type == "normal" || blur) {
let root = this.getRoot();
if (root instanceof Toolkit.MenuBar)
root.blur();
}
}
}
// Locate the root Menu component
getRoot() {
for (let comp = this.parent; comp != this.app; comp = comp.parent) {
if (
comp instanceof Toolkit.Menu &&
!(comp.parent instanceof Toolkit.MenuItem)
) return comp;
}
return null;
}
};
export { register };

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let register = Toolkit => Toolkit.Radio =
// Radio button group manager
class Radio extends Toolkit.Checkbox {
///////////////////////// Initialization Methods //////////////////////////
constructor(app, options) {
super(app, options = Object.assign({
class: "tk radio",
role : "radio"
}, options || {}));
// Configure instance fields
this._group = null;
// Configure options
if ("group" in options)
this.group = options.group;
if ("checked" in options) {
this.checked = false;
this.checked = options.checked;
}
}
///////////////////////////// Event Handlers //////////////////////////////
// Key press
onKeyDown(e) {
// Error checking
if (e.altKey || e.ctrlKey || e.shiftKey || this.disabled)
return;
// Processing by key
let item = null;
switch (e.key) {
// Activate the radio button
case " ":
case "Enter":
this.checked = true;
break;
// Focus the next button in the group
case "ArrowDown":
case "ArrowRight":
if (this.group == null)
return;
item = this.group.next(this);
break;
// Focus the previous button in the group
case "ArrowLeft":
case "ArrowUp":
if (this.group == null)
return;
item = this.group.previous(this);
break;
default: return;
}
// Select and focus another item in the group
if (item != null && item != this) {
this.group.active = item;
item.focus();
item.element.dispatchEvent(new Event("input"));
}
Toolkit.handle(e);
}
///////////////////////////// Public Methods //////////////////////////////
// The check box is checked
get checked() { return super.checked; }
set checked(checked) {
super.checked = checked;
if (this.group != null && this != this.group.active && checked)
this.group.active = this;
}
// Managing radio button group
get group() { return this._group; }
set group(group) {
if (group == this.group)
return;
if (group)
group.add(this);
this._group = group ? group : null;
}
///////////////////////////// Private Methods /////////////////////////////
// Specify the checked state
setChecked(checked) {
if (!checked || this.checked)
return;
this.checked = true;
this.element.dispatchEvent(new Event("input"));
}
}
export { register };

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let register = Toolkit => Toolkit.RadioGroup =
// Radio button group manager
class RadioGroup {
///////////////////////// Initialization Methods //////////////////////////
constructor() {
this._active = null;
this.items = [];
}
///////////////////////////// Public Methods //////////////////////////////
// The current active radio button
get active() { return this._active; }
set active(item) {
// Error checking
if (
item == this.active ||
item != null && this.items.indexOf(item) == -1
) return;
// De-select the current active item
if (this.active != null) {
this.active.checked = false;
this.active.element.setAttribute("tabindex", "-1");
}
// Select the new active item
this._active = item ? item : null;
if (item == null)
return;
if (!item.checked)
item.checked = true;
item.element.setAttribute("tabindex", "0");
}
// Add a radio button item
add(item) {
// Error checking
if (
item == null ||
this.items.indexOf(item) != -1
) return;
// Remove the item from its current group
if (item.group != null)
item.group.remove(item);
// Add the item to this group
this.items.push(item);
item.group = this;
item.element.setAttribute("tabindex",
this.items.length == 0 ? "0" : "-1");
return item;
}
// Check whether an element is contained in the radio group
contains(element) {
if (element instanceof Toolkit.Component)
element = element.element;
return !!this.items.find(i=>i.element.contains(element));
}
// Remove a radio button item
remove(item) {
let index = this.items.indexOf(item);
// The item is not in the group
if (index == -1)
return null;
// Remove the item from the group
this.items.splice(index, 1);
item.element.setAttribute("tabindex", "0");
if (this.active == item) {
this.active = null;
if (this.items.length != 0)
this.items[0].element.setAttribute("tabindex", "0");
}
return item;
}
///////////////////////////// Package Methods /////////////////////////////
// Determine the next radio button in the group
next(item) {
let index = this.items.indexOf(item);
return index == -1 ? null :
this.items[(index + 1) % this.items.length];
}
// Determine the previous radio button in the group
previous(item) {
let index = this.items.indexOf(item);
return index == -1 ? null :
this.items[(index + this.items.length - 1) % this.items.length];
}
}
export { register };

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let register = Toolkit => Toolkit.ScrollBar =
// Scrolling control
class ScrollBar extends Toolkit.Component {
///////////////////////// Initialization Methods //////////////////////////
constructor(app, options = {}) {
super(app, options = Object.assign({
class : "tk scroll-bar",
role : "scrollbar",
tabIndex: "0"
}, options, { style: Object.assign({
display : "inline-grid",
overflow: "hidden"
}, options.style || {}) }));
// Configure instance fields
this._blockIncrement = 50;
this._controls = null;
this._unitIncrement = 1;
// Unit decrement button
this.unitLess = new Toolkit.Button(app,
{ class: "unit-less", role: "", tabIndex: "" });
this.unitLess.addEventListener("action",
e=>this.value -= this.unitIncrement);
this.add(this.unitLess);
// Component
this.addEventListener("keydown" , e=>this.onKeyDown(e));
this.addEventListener("pointerdown", e=>e.preventDefault());
// Track
this.track = new Toolkit.Component(app, {
class: "track",
style: {
display : "grid",
overflow: "hidden"
}
});
this.track.addEventListener("resize", e=>this.onResize());
this.add(this.track);
// Unit increment button
this.unitMore = new Toolkit.Button(app,
{ class: "unit-more", role: "", tabIndex: "" });
this.unitMore.addEventListener("action",
e=>this.value += this.unitIncrement);
this.add(this.unitMore);
// Block decrement track
this.blockLess = new Toolkit.Button(app,
{ class: "block-less", role: "", tabIndex: "" });
this.blockLess.addEventListener("action",
e=>this.value -= this.blockIncrement);
this.track.add(this.blockLess);
// Scroll box
this.thumb = document.createElement("div");
this.thumb.className = "thumb";
this.thumb.addEventListener("pointerdown", e=>this.onThumbDown(e));
this.thumb.addEventListener("pointermove", e=>this.onThumbMove(e));
this.thumb.addEventListener("pointerUp" , e=>this.onThumbUp (e));
this.track.append(this.thumb);
// Block increment track
this.blockMore = new Toolkit.Button(app,
{ class: "block-more", role: "", tabIndex: "" });
this.blockMore.addEventListener("action",
e=>this.value += this.blockIncrement);
this.track.add(this.blockMore);
// Configure options
this.blockIncrement = !("blockIncrement" in options) ?
this._blockIncrement : options.blockIncrement;
this.orientation = !("orientation" in options) ?
"horizontal" : options.orientation;
this.unitIncrement = !("unitIncrement" in options) ?
this._unitIncrement : options.unitIncrement;
// Configure min, max and value
let min = "min" in options ? options.min : 0;
let max = Math.max(min, "max" in options ? options.max : 100);
let value = Math.max(min, Math.min(max,
"value" in options ? options.value : 0));
this.element.setAttribute("aria-valuemax", max);
this.element.setAttribute("aria-valuemin", min);
this.element.setAttribute("aria-valuenow", value);
// Display the element
this.track.element.dispatchEvent(new Event("resize"));
this.onResize();
}
///////////////////////////// Event Handlers //////////////////////////////
// Key press
onKeyDown(e) {
// Take no action
if (e.altKey || e.ctrlKey || e.shiftKey)
return;
// Processing by key
switch (e.key) {
case "ArrowDown":
if (this.orientation != "vertical")
return;
this.value += this.unitIncrement;
break;
case "ArrowLeft":
if (this.orientation != "horizontal")
return;
this.value -= this.unitIncrement;
break;
case "ArrowRight":
if (this.orientation != "horizontal")
return;
this.value += this.unitIncrement;
break;
case "ArrowUp":
if (this.orientation != "vertical")
return;
this.value -= this.unitIncrement;
break;
case "PageDown":
this.value += this.blockIncrement;
break;
case "PageUp":
this.value -= this.blockIncrement;
break;
default: return;
}
Toolkit.handle(e);
}
// Track resized
onResize() {
let metrics = this.metrics();
let add = metrics.horz ? "width" : "height";
let remove = metrics.horz ? "height" : "width" ;
// Resize the widget elements
this.blockLess.style.removeProperty(remove);
this.blockLess.style.setProperty (add, metrics.pos + "px");
this.thumb .style.removeProperty(remove);
this.thumb .style.setProperty (add, metrics.thumb + "px");
// Indicate whether the entire view is visible
this.element.classList
[metrics.unneeded ? "add" : "remove"]("unneeded");
}
// Thumb pointer down
onThumbDown(e) {
// Prevent the user agent from focusing the element
e.preventDefault();
// Error checking
if (
e.button != 0 ||
this.disabled ||
this.unneeded ||
e.target.hasPointerCapture(e.pointerId)
)
return;
// Begin dragging
this.drag = this.metrics();
this.drag.start = this.drag.horz ? e.screenX : e.screenY;
e.target.setPointerCapture(e.pointerId);
Toolkit.handle(e);
}
// Thumb pointer move
onThumbMove(e) {
// Error checking
if (!e.target.hasPointerCapture(e.pointerId))
return;
// Working variables
let add = this.drag.horz ? "width" : "height";
let remove = this.drag.horz ? "height" : "width" ;
let delta = (this.drag.horz?e.screenX:e.screenY) - this.drag.start;
let max = this.drag.track - this.drag.thumb;
let pos = Math.max(0, Math.min(max, this.drag.pos + delta));
let value = Math.round(this.min + (this.max - this.min) * pos / (this.drag.track || 1));
let scroll = value != this.value;
// Drag the thumb
this.blockLess.style.removeProperty(remove);
this.blockLess.style.setProperty (add, pos + "px");
this.element.setAttribute("aria-valuenow", value);
Toolkit.handle(e);
// Raise a scroll event
if (scroll)
this.event();
}
// Thumb pointer up
onThumbUp(e) {
// Error checking
if (e.button != 0 || !e.target.hasPointerCapture(e))
return;
// Stop dragging
this.drag = null;
e.target.releasePointerCapture(e.pointerId);
Toolkit.handle(e);
}
///////////////////////////// Public Methods //////////////////////////////
// Page adjustment amount
get blockIncrement() { return this._blockIncrement; }
set blockIncrement(amount) {
amount = Math.max(1, amount);
if (amount == this.blockIncrement)
return;
this._blockIncrement = amount;
this.onResize();
}
// Controlling target
get controls() { return this._controls; }
set controls(target) {
if (target) {
this.element.setAttribute("aria-controls",
(target.element || target).id);
} else this.element.removeAttribute("aria-controls");
this._controls = target;
}
// Component cannot be interacted with
get disabled() { return super.disabled; }
set disabled(disabled) {
super .disabled = disabled;
this.unitLess .disabled = disabled;
this.blockLess.disabled = disabled;
this.blockMore.disabled = disabled;
this.unitMore .disabled = disabled;
}
// Maximum value
get max() {
return this.blockIncrement +
parseInt(this.element.getAttribute("aria-valuemax"));
}
set max(max) {
if (max == this.max)
return;
if (max < this.min)
this.element.setAttribute("aria-valuemin", max);
if (max < this.value)
this.element.setAttribute("aria-valuenow", max);
this.element.setAttribute("aria-valuemax", max - this.blockIncrement);
this.onResize();
}
// Minimum value
get min() { return parseInt(this.element.getAttribute("aria-valuemin")); }
set min(min) {
if (min == this.min)
return;
if (min > this.max)
this.element.setAttribute("aria-valuemax",min-this.blockIncrement);
if (min > this.value)
this.element.setAttribute("aria-valuenow", min);
this.element.setAttribute("aria-valuemin", min);
this.onResize();
}
// Layout direction
get orientation() { return this.element.getAttribute("aria-orientation"); }
set orientation(orientation) {
// Orientation is not changing
if (orientation == this.orientation)
return;
// Select which CSS properties to modify
let add, remove;
switch (orientation) {
case "horizontal":
add = "grid-template-columns";
remove = "grid-template-rows";
break;
case "vertical":
add = "grid-template-rows";
remove = "grid-template-columns";
break;
default: return; // Invalid orientation
}
// Configure the element
this.element.style.removeProperty(remove);
this.element.style.setProperty(add, "max-content auto max-content");
this.element.setAttribute("aria-orientation", orientation);
this.track .style.removeProperty(remove);
this.track .style.setProperty(add, "max-content max-content auto");
}
// Line adjustment amount
get unitIncrement() { return this._unitIncrement; }
set unitIncrement(amount) {
amount = Math.max(1, amount);
if (amount == this.unitIncrement)
return;
this._unitIncrement = amount;
this.onResize();
}
// The scroll bar is not needed
get unneeded() { return this.element.classList.contains("unneeded"); }
set unneeded(x) { }
// Current value
get value() {return parseInt(this.element.getAttribute("aria-valuenow"));}
set value(value) {
value = Math.min(this.max - this.blockIncrement,
Math.max(this.min, value));
if (value == this.value)
return;
this.element.setAttribute("aria-valuenow", value);
this.onResize();
this.event();
}
///////////////////////////// Private Methods /////////////////////////////
// Raise a scroll event
event() {
this.element.dispatchEvent(
Object.assign(new Event("scroll"), { scroll: this.value }));
}
// Compute pixel dimensions of inner elements
metrics() {
let horz = this.orientation == "horizontal";
let track = this.track.element.getBoundingClientRect()
[horz ? "width" : "height"];
let block = this.blockIncrement;
let range = this.max - this.min || 1;
let thumb = block >= range ? track :
Math.min(track, Math.max(4, Math.round(block * track / range)));
let pos = Math.round((this.value - this.min) * track / range);
return {
block : block,
horz : horz,
pos : pos,
range : range,
thumb : thumb,
track : track,
unneeded: block >= range
};
}
}
export { register };

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let register = Toolkit => Toolkit.ScrollPane =
// Scrolling container for larger internal elements
class ScrollPane extends Toolkit.Component {
///////////////////////// Initialization Methods //////////////////////////
constructor(app, options = {}) {
super(app, options = Object.assign({
class: "tk scroll-pane"
}, options, { style: Object.assign({
display : "inline-grid",
gridAutoRows: "auto max-content",
overflow : "hidden",
position : "relative"
}, options.style || {}) }));
// Configure options
this._overflowX = "auto";
this._overflowY = "auto";
if ("overflowX" in options)
this.overflowX = options.overflowX;
if ("overflowY" in options)
this.overflowY = options.overflowY;
// Component
this.addEventListener("wheel", e=>this.onWheel(e));
// Viewport
this.viewport = new Toolkit.Component(app, {
class: "viewport",
style: {
overflow: "hidden"
}
});
this.viewport.element.id = Toolkit.id();
this.viewport.addEventListener("keydown", e=>this.onKeyDown (e));
this.viewport.addEventListener("resize" , e=>this.onResize ( ));
this.viewport.addEventListener("scroll" , e=>this.onInnerScroll( ));
this.viewport.addEventListener("visibility",
e=>{ if (e.visible) this.onResize(); });
this.add(this.viewport);
// View resize manager
this.viewResizer = new ResizeObserver(()=>this.onResize());
// Vertical scroll bar
this.vscroll = new Toolkit.ScrollBar(app, {
orientation: "vertical",
visibility : true
});
this.vscroll.controls = this.viewport;
this.vscroll.addEventListener("scroll",
e=>this.onOuterScroll(e, true));
this.add(this.vscroll);
// Horizontal scroll bar
this.hscroll = new Toolkit.ScrollBar(app, {
orientation: "horizontal",
visibility : true
});
this.hscroll.controls = this.viewport;
this.hscroll.addEventListener("scroll",
e=>this.onOuterScroll(e, false));
this.add(this.hscroll);
// Corner mask (for when both scroll bars are visible)
this.corner = new Toolkit.Component(app, { class: "corner" });
this.add(this.corner);
// Configure view
this.view = options.view || null;
}
///////////////////////////// Event Handlers //////////////////////////////
// Key press
onKeyDown(e) {
// Error checking
if (e.altKey || e.ctrlKey || e.shiftKey || this.disabled)
return;
// Processing by key
switch(e.key) {
case "ArrowDown":
this.viewport.element.scrollTop +=
this.vscroll.unitIncrement;
break;
case "ArrowLeft":
this.viewport.element.scrollLeft -=
this.hscroll.unitIncrement;
break;
case "ArrowRight":
this.viewport.element.scrollLeft +=
this.hscroll.unitIncrement;
break;
case "ArrowUp":
this.viewport.element.scrollTop -=
this.vscroll.unitIncrement;
break;
case "PageDown":
this.viewport.element.scrollTop +=
this.vscroll.blockIncrement;
break;
case "PageUp":
this.viewport.element.scrollTop -=
this.vscroll.blockIncrement;
break;
default: return;
}
Toolkit.handle(e);
}
// Component resized
onResize() {
// Error checking
if (!this.viewport)
return;
// Working variables
let viewport = this.viewport.element.getBoundingClientRect();
let scrollHeight =
this.hscroll.element.getBoundingClientRect().height;
let scrollWidth =
this.vscroll.element.getBoundingClientRect().width;
let viewHeight = this.viewHeight;
let viewWidth = this.viewWidth;
let fullHeight =
viewport.height + (this.hscroll.visible ? scrollHeight : 0);
let fullWidth =
viewport.width + (this.vscroll.visible ? scrollWidth : 0);
// Configure scroll bars
this.hscroll.max = viewWidth;
this.hscroll.blockIncrement = viewport.width;
this.hscroll.value = this.viewport.element.scrollLeft;
this.vscroll.max = viewHeight;
this.vscroll.blockIncrement = viewport.height;
this.vscroll.value = this.viewport.element.scrollTop;
// Determine whether the vertical scroll bar is visible
let vert = false;
if (
this.overflowY == "scroll" ||
this.overflowY == "auto" &&
viewHeight > fullHeight &&
scrollWidth <= viewWidth
) {
fullWidth -= scrollWidth;
vert = true;
}
// Determine whether the horizontal scroll bar is visible
let horz = false;
if (
this.overflowX == "scroll" ||
this.overflowX == "auto" &&
viewWidth > fullWidth &&
scrollHeight <= viewHeight
) {
fullHeight -= scrollHeight;
horz = true;
}
// The horizontal scroll bar necessitates the vertical scroll bar
vert = vert ||
this.overflowY == "auto" &&
viewHeight > fullHeight &&
scrollWidth < viewWidth
;
// Configure scroll bar visibility
this.setScrollBars(horz, vert);
}
// View scrolled
onInnerScroll() {
this.hscroll.value = this.viewport.element.scrollLeft;
this.vscroll.value = this.viewport.element.scrollTop;
}
// Scroll bar scrolled
onOuterScroll(e, vertical) {
this.viewport.element[vertical?"scrollTop":"scrollLeft"] = e.scroll;
}
// Mouse wheel scrolled
onWheel(e) {
let delta = e.deltaY;
// Error checking
if (e.altKey || e.ctrlKey || e.shiftKey || delta == 0)
return;
// Scrolling by pixel
if (e.deltaMode == WheelEvent.DOM_DELTA_PIXEL) {
let max = this.vscroll.unitIncrement * 3;
delta = Math.min(max, Math.max(-max, delta));
}
// Scrolling by line
else if (e.deltaMode == WheelEvent.DOM_DELTA_LINE) {
delta = Math[delta < 0 ? "floor" : "ceil"](delta) *
this.vscroll.unitIncrement;
}
// Scrolling by page
else if (e.deltaMode == WheelEvent.DOM_DELTA_PAGE) {
delta = Math[delta < 0 ? "floor" : "ceil"](delta) *
this.vscroll.blockIncrement;
}
this.viewport.element.scrollTop += delta;
Toolkit.handle(e);
}
///////////////////////////// Public Methods //////////////////////////////
// Horizontal scroll bar policy
get overflowX() { return this._overflowX; }
set overflowX(policy) {
switch (policy) {
case "auto":
case "hidden":
case "scroll":
this._overflowX = policy;
this.onResize();
}
}
// Vertical scroll bar policy
get overflowY() { return this._overflowY; }
set overflowY(policy) {
switch (policy) {
case "auto":
case "hidden":
case "scroll":
this._overflowY = policy;
this.onResize();
}
}
// Horizontal scrolling position
get scrollLeft() { return this.viewport.element.scrollLeft; }
set scrollLeft(left) { this.viewport.element.scrollLeft = left; }
// Vertical scrolling position
get scrollTop() { return this.viewport.element.scrollTop; }
set scrollTop(top) { this.viewport.element.scrollTop = top; }
// Represented scrollable region
get view() {
let ret = this.viewport.element.querySelector("*");
return ret && ret.component || ret || null;
}
set view(view) {
view = view instanceof Toolkit.Component ? view.element : view;
if (view == null) {
view = this.viewport.element.querySelector("*");
if (view)
this.viewResizer.unobserve(view);
this.viewport.element.replaceChildren();
} else {
this.viewport.element.replaceChildren(view);
this.viewResizer.observe(view);
}
}
// Height of the view element
set viewHeight(x) { }
get viewHeight() {
let view = this.view && this.view.element || this.view;
return Math.min(
this.viewport.element.scrollHeight,
view ? view.clientHeight : 0
);
}
// width of the view element
set viewWidth(x) { }
get viewWidth() {
let view = this.view && this.view.element || this.view;
return Math.min(
this.viewport.element.scrollWidth,
view ? view.clientWidth : 0
);
}
///////////////////////////// Private Methods /////////////////////////////
// Configure scroll bar visibility
setScrollBars(horz, vert) {
this.element.style.gridTemplateColumns =
"auto" + (vert ? " max-content" : "");
this.hscroll.visible = horz;
this.hscroll.element.style[horz ? "removeProperty" : "setProperty"]
("position", "absolute");
this.vscroll.visible = vert;
this.vscroll.element.style[vert ? "removeProperty" : "setProperty"]
("position", "absolute");
this.corner.visible = vert && horz;
this.element.classList[horz ? "add" : "remove"]("horizontal");
this.element.classList[vert ? "add" : "remove"]("vertical");
}
}
export { register };

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let register = Toolkit => Toolkit.SplitPane =
// Presentational text
class SplitPane extends Toolkit.Component {
///////////////////////// Initialization Methods //////////////////////////
constructor(app, options = {}) {
super(app, options = Object.assign({
class: "tk split-pane"
}, options, { style: Object.assign({
display : "grid",
gridTemplateColumns: "max-content max-content auto",
overflow : "hidden"
}, options.style || {}) }));
// Configure instance fields
this.drag = null;
this._orientation = "left";
this._primary = null;
this.resizer = new ResizeObserver(()=>this.priResize());
this.restore = null;
this._secondary = null;
// Primary placeholder
this.noPrimary = document.createElement("div");
this.noPrimary.id = Toolkit.id();
// Separator widget
this.splitter = document.createElement("div");
this.splitter.setAttribute("aria-controls", this.noPrimary.id);
this.splitter.setAttribute("aria-valuemin", "0");
this.splitter.setAttribute("role", "separator");
this.splitter.setAttribute("tabindex", "0");
this.splitter.addEventListener("keydown",
e=>this.splitKeyDown (e));
this.splitter.addEventListener("pointerdown",
e=>this.splitPointerDown(e));
this.splitter.addEventListener("pointermove",
e=>this.splitPointerMove(e));
this.splitter.addEventListener("pointerup" ,
e=>this.splitPointerUp (e));
// Secondary placeholder
this.noSecondary = document.createElement("div");
// Configure options
if ("orientation" in options)
this.orientation = options.orientation;
if ("primary" in options)
this.primary = options.primary;
if ("secondary" in options)
this.secondary = options.secondary;
this.revalidate();
}
///////////////////////////// Event Handlers //////////////////////////////
// Primary pane resized
priResize() {
let metrics = this.measure();
this.splitter.setAttribute("aria-valuemax", metrics.max);
this.splitter.setAttribute("aria-valuenow", metrics.value);
}
// Splitter key press
splitKeyDown(e) {
// Error checking
if (e.altKey || e.ctrlKey || e.shiftKey || this.disabled)
return;
// Drag is in progress
if (this.drag) {
if (e.key != "Escape")
return;
this.splitter.releasePointerCapture(this.drag.pointerId);
this.value = this.drag.size;
this.drag = null;
Toolkit.handle(e);
return;
}
// Processing by key
let edge = this.orientation;
let horz = edge == "left" || edge == "right";
switch (e.key) {
case "ArrowDown":
if (horz)
return;
this.restore = null;
this.value += edge == "top" ? +10 : -10;
break;
case "ArrowLeft":
if (!horz)
return;
this.restore = null;
this.value += edge == "left" ? -10 : +10;
break;
case "ArrowRight":
if (!horz)
return;
this.restore = null;
this.value += edge == "left" ? +10 : -10;
break;
case "ArrowUp":
if (horz)
return;
this.restore = null;
this.value += edge == "top" ? -10 : +10;
break;
case "End":
this.restore = null;
this.value = this.element.getBoundingClientRect()
[horz ? "width" : "height"];
break;
case "Enter":
if (this.restore !== null) {
this.value = this.restore;
this.restore = null;
} else {
this.restore = this.value;
this.value = 0;
}
break;
case "Home":
this.restore = null;
this.value = 0;
break;
default: return;
}
Toolkit.handle(e);
}
// Splitter pointer down
splitPointerDown(e) {
// Do not obtain focus automatically
e.preventDefault();
// Error checking
if (
e.altKey || e.ctrlKey || e.shiftKey || e.button != 0 ||
this.disabled || this.splitter.hasPointerCapture(e.pointerId)
) return;
// Begin dragging
this.splitter.setPointerCapture(e.poinerId);
let horz = this.orientation == "left" || this.orientation == "right";
let prop = horz ? "width" : "height";
this.drag = {
pointerId: e.pointerId,
size : (this._primary || this.noPrimary)
.getBoundingClientRect()[prop],
start : e[horz ? "clientX" : "clientY" ]
};
Toolkit.handle(e);
}
// Splitter pointer move
splitPointerMove(e) {
// Error checking
if (!this.splitter.hasPointerCapture(e.pointerId))
return;
// Working variables
let horz = this.orientation == "left" || this.orientation == "right";
let delta = e[horz ? "clientX" : "clientY"] - this.drag.start;
let scale = this.orientation == "bottom" ||
this.orientation == "right" ? -1 : 1;
// Resize the primary component
this.restore = null;
this.value = Math.round(this.drag.size + scale * delta);
Toolkit.handle(e);
}
// Splitter pointer up
splitPointerUp(e) {
// Error checking
if (e.button != 0 || !this.splitter.hasPointerCapture(e.pointerId))
return;
// End dragging
this.splitter.releasePointerCapture(e.pointerId);
Toolkit.handle(e);
}
///////////////////////////// Public Methods //////////////////////////////
// Edge containing the primary pane
get orientation() { return this._orientation; }
set orientation(orientation) {
switch (orientation) {
case "bottom":
case "left":
case "right":
case "top":
break;
default: return;
}
if (orientation == this.orientation)
return;
this._orientation = orientation;
this.revalidate();
}
// Primary content pane
get primary() {
return !this._primary ? null :
this._primary.component || this._primary;
}
set primary(element) {
if (element instanceof Toolkit.Component)
element = element.element;
if (!(element instanceof HTMLElement) || element == this.element)
return;
this.resizer.unobserve(this._primary || this.noPrimary);
this._primary = element || null;
this.resizer.observe(element || this.noPrimary);
this.splitter.setAttribute("aria-controls",
(element || this.noPrimary).id);
this.revalidate();
}
// Secondary content pane
get secondary() {
return !this._secondary ? null :
this._secondary.component || this._secondary;
}
set secondary(element) {
if (element instanceof Toolkit.Component)
element = element.element;
if (!(element instanceof HTMLElement) || element == this.element)
return;
this._secondary = element || null;
this.revalidate();
}
// Current splitter position
get value() {
return Math.ceil(
(this._primary || this.primary).getBoundingClientRect()
[this.orientation == "left" || this.orientation == "right" ?
"width" : "height"]
);
}
set value(value) {
value = Math.round(value);
// Error checking
if (value == this.value)
return;
// Working variables
let pri = this._primary || this.noPrimary;
let sec = this._secondary || this.noSecondary;
let prop = this.orientation == "left" || this.orientation == "right" ?
"width" : "height";
// Resize the primary component
pri.style[prop] = Math.max(0, value) + "px";
// Ensure the pane didn't become too large due to margin styles
let propPri = pri .getBoundingClientRect()[prop];
let propSec = sec .getBoundingClientRect()[prop];
let propSplit = this.splitter.getBoundingClientRect()[prop];
let propThis = this.element .getBoundingClientRect()[prop];
if (propPri + propSec + propSplit > propThis) {
pri.style[prop] = Math.max(0, Math.floor(
propThis - propSec - propSplit)) + "px";
}
}
///////////////////////////// Private Methods /////////////////////////////
// Measure the current bounds of the child elements
measure() {
let prop = this.orientation == "top" || this.orientation == "bottom" ?
"height" : "width";
let bndThis = this.element .getBoundingClientRect();
let bndSplit = this.splitter.getBoundingClientRect();
let bndPri = (this._primary || this.noPrimary)
.getBoundingClientRect();
return {
max : bndThis[prop],
property: prop,
value : bndPri[prop]
}
}
// Arrange child components
revalidate() {
let horz = true;
let children = [
this._primary || this.noPrimary,
this.splitter,
this._secondary || this.noSecondary
];
// Select styles by orientation
switch (this.orientation) {
case "bottom":
Object.assign(this.element.style, {
gridAutoColumns : "100%",
gridTemplateRows: "auto max-content max-content"
});
horz = false;
children.reverse();
break;
case "left":
Object.assign(this.element.style, {
gridAutoRows : "100%",
gridTemplateColumns: "max-content max-content auto"
});
break;
case "right":
Object.assign(this.element.style, {
gridAutoRows : "100%",
gridTemplateColumns: "auto max-content max-content"
});
children.reverse();
break;
case "top":
Object.assign(this.element.style, {
gridAutoColumns : "100%",
gridTemplateRows: "max-content max-content auto"
});
horz = false;
break;
}
// Update element
if (horz) {
this.element.style.removeProperty("grid-auto-columns");
this.element.style.removeProperty("grid-template-rows");
this.splitter.className = "tk horizontal";
this.splitter.style.cursor = "ew-resize";
} else {
this.element.style.removeProperty("grid-auto-rows");
this.element.style.removeProperty("grid-template-columns");
this.splitter.className = "tk vertical";
this.splitter.style.cursor = "ns-resize";
}
this.element.replaceChildren(... children);
this.priResize();
}
}
export { register };

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let register = Toolkit => Toolkit.TextBox =
// Check box
class TextBox extends Toolkit.Component {
///////////////////////// Initialization Methods //////////////////////////
constructor(app, options = {}) {
super(app, options = Object.assign({
class : "tk text-box",
tag : "input",
type : "text"
}, options));
this.element.addEventListener("focusout", e=>this.commit ( ));
this.element.addEventListener("keydown" , e=>this.onKeyDown(e));
this.value = options.value || null;
}
///////////////////////////// Event Handlers //////////////////////////////
// Key press
onKeyDown(e) {
if (e.altKey || e.ctrlKey || e.shiftKey || this.disabled)
return;
if (e.key != "Tab")
e.stopPropagation();
if (e.key == "Enter")
this.commit();
}
///////////////////////////// Public Methods //////////////////////////////
// Contained text
get value() { return this.element.value; }
set value(value) {
value = value === undefined || value === null ? "" : value.toString();
if (value == this.value)
return;
this.element.value = value;
}
///////////////////////////// Package Methods /////////////////////////////
// Update localization strings
localize() {
this.localizeLabel();
this.localizeTitle();
}
///////////////////////////// Private Methods /////////////////////////////
// Complete editing
commit() {
this.element.dispatchEvent(new Event("action"));
}
}
export { register };

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// Namespace container for toolkit classes
class Toolkit {
// Next numeric ID
static nextId = 0;
///////////////////////////// Static Methods //////////////////////////////
// Produce a synthetic Event object
static event(type, properties, bubbles = true) {
return Object.assign(
new Event(type, { bubbles: bubbles }),
properties
);
}
// Finalize an event
static handle(event) {
event.stopPropagation();
event.preventDefault();
}
// Generate a unique DOM element ID
static id() {
return "tk" + this.nextId++;
}
}
// Register component classes
(await import(/**/"./Component.js" )).register(Toolkit);
(await import(/**/"./App.js" )).register(Toolkit);
(await import(/**/"./Button.js" )).register(Toolkit);
(await import(/**/"./Checkbox.js" )).register(Toolkit);
(await import(/**/"./Desktop.js" )).register(Toolkit);
(await import(/**/"./DropDown.js" )).register(Toolkit);
(await import(/**/"./Label.js" )).register(Toolkit);
(await import(/**/"./Menu.js" )).register(Toolkit);
(await import(/**/"./MenuBar.js" )).register(Toolkit);
(await import(/**/"./MenuItem.js" )).register(Toolkit);
(await import(/**/"./ScrollBar.js" )).register(Toolkit);
(await import(/**/"./ScrollPane.js")).register(Toolkit);
(await import(/**/"./Radio.js" )).register(Toolkit);
(await import(/**/"./RadioGroup.js")).register(Toolkit);
(await import(/**/"./SplitPane.js" )).register(Toolkit);
(await import(/**/"./TextBox.js" )).register(Toolkit);
(await import(/**/"./Window.js" )).register(Toolkit);
export { Toolkit };

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let register = Toolkit => Toolkit.Window =
class Window extends Toolkit.Component {
//////////////////////////////// Constants ////////////////////////////////
// Resize directions by dragging edge
static RESIZES = {
"nw": { left : true, top : true },
"n" : { top : true },
"ne": { right: true, top : true },
"w" : { left : true },
"e" : { right: true },
"sw": { left : true, bottom: true },
"s" : { bottom: true },
"se": { right: true, bottom: true }
};
///////////////////////// Initialization Methods //////////////////////////
constructor(app, options = {}) {
super(app, Object.assign({
"aria-modal": "false",
class : "tk window",
id : Toolkit.id(),
role : "dialog",
tabIndex : -1,
visibility : true,
visible : false
}, options, { style: Object.assign({
boxSizing : "border-box",
display : "grid",
gridTemplateRows: "max-content auto",
position : "absolute"
}, options.style || {})} ));
// Configure instance fields
this.lastFocus = null;
this.style = getComputedStyle(this.element);
this.text = null;
// Configure event listeners
this.addEventListener("focusin", e=>this.onFocus (e));
this.addEventListener("keydown", e=>this.onKeyDown(e));
// Working variables
let onBorderDown = e=>this.onBorderDown(e);
let onBorderMove = e=>this.onBorderMove(e);
let onBorderUp = e=>this.onBorderUp (e);
let onDragKey = e=>this.onDragKey (e);
// Resizing borders
for (let edge of [ "nw1", "nw2", "n", "ne1", "ne2",
"w", "e", "sw1", "sw2", "s", "se1", "se2"]) {
let border = document.createElement("div");
border.className = edge;
border.edge = edge.replace(/[12]/g, "");
Object.assign(border.style, {
cursor : border.edge + "-resize",
position: "absolute"
});
border.addEventListener("keydown" , onDragKey );
border.addEventListener("pointerdown", onBorderDown);
border.addEventListener("pointermove", onBorderMove);
border.addEventListener("pointerup" , onBorderUp );
this.element.append(border);
}
// Title bar
this.titleBar = document.createElement("div");
this.titleBar.className = "title";
this.titleBar.id = Toolkit.id();
Object.assign(this.titleBar.style, {
display : "grid",
gridTemplateColumns: "auto max-content",
minWidth : "0",
overflow : "hidden"
});
this.element.append(this.titleBar);
this.titleBar.addEventListener("keydown" , e=>this.onDragKey (e));
this.titleBar.addEventListener("pointerdown", e=>this.onTitleDown(e));
this.titleBar.addEventListener("pointermove", e=>this.onTitleMove(e));
this.titleBar.addEventListener("pointerup" , e=>this.onTitleUp (e));
// Title text
this.title = document.createElement("div");
this.title.className = "text";
this.title.id = Toolkit.id();
this.title.innerText = "\u00a0";
this.titleBar.append(this.title);
this.element.setAttribute("aria-labelledby", this.title.id);
// Close button
this.close = new Toolkit.Button(app, {
class : "close-button",
doNotFocus: true
});
this.close.addEventListener("action",
e=>this.element.dispatchEvent(new Event("close")));
this.close.setLabel("{window.close}", true);
this.close.setTitle("{window.close}", true);
this.titleBar.append(this.close.element);
// Client area
this.client = document.createElement("div");
this.client.className = "client";
Object.assign(this.client.style, {
minHeight: "0",
minWidth : "0",
overflow : "hidden"
});
this.element.append(this.client);
}
///////////////////////////// Event Handlers //////////////////////////////
// Border pointer down
onBorderDown(e) {
// Do not drag
if (e.button != 0 || this.app.drag != null)
return;
// Initiate dragging
this.drag = {
height: this.outerHeight,
left : this.left,
top : this.top,
width : this.outerWidth,
x : e.clientX,
y : e.clientY
};
this.drag.bottom = this.drag.top + this.drag.height;
this.drag.right = this.drag.left + this.drag.width;
// Configure event
this.focus();
this.app.drag = e;
Toolkit.handle(e);
}
// Border pointer move
onBorderMove(e) {
// Not dragging
if (this.app.drag != e.target)
return;
// Working variables
let resize = Toolkit.Window.RESIZES[e.target.edge];
let dx = e.clientX - this.drag.x;
let dy = e.clientY - this.drag.y;
let style = getComputedStyle(this.element);
let minHeight =
this.client .getBoundingClientRect().top -
this.titleBar.getBoundingClientRect().top +
parseFloat(style.borderTop ) +
parseFloat(style.borderBottom)
;
// Output bounds
let height = this.drag.height;
let left = this.drag.left;
let top = this.drag.top;
let width = this.drag.width;
// Dragging left
if (resize.left) {
let bParent = this.parent.element.getBoundingClientRect();
left += dx;
left = Math.min(left, this.drag.right - 32);
left = Math.min(left, bParent.width - 16);
width = this.drag.width + this.drag.left - left;
}
// Dragging top
if (resize.top) {
let bParent = this.parent.element.getBoundingClientRect();
top += dy;
top = Math.max(top, 0);
top = Math.min(top, this.drag.bottom - minHeight);
top = Math.min(top, bParent.height - minHeight);
height = this.drag.height + this.drag.top - top;
}
// Dragging right
if (resize.right) {
width += dx;
width = Math.max(width, 32);
width = Math.max(width, 16 - this.drag.left);
}
// Dragging bottom
if (resize.bottom) {
height += dy;
height = Math.max(height, minHeight);
}
// Apply bounds
this.element.style.height = height + "px";
this.element.style.left = left + "px";
this.element.style.top = top + "px";
this.element.style.width = width + "px";
// Configure event
Toolkit.handle(e);
}
// Border pointer up
onBorderUp(e, id) {
// Not dragging
if (e.button != 0 || this.app.drag != e.target)
return;
// Configure instance fields
this.drag = null;
// Configure event
this.app.drag = null;
Toolkit.handle(e);
}
// Key down while dragging
onDragKey(e) {
if (
this.drag != null && e.key == "Escape" &&
!e.ctrlKey && !e.altKey && !e.shiftKey
) this.cancelDrag();
}
// Focus gained
onFocus(e) {
// The element receiving focus is self, or Close button from external
if (
e.target == this.element ||
e.target == this.close.element && !this.contains(e.relatedTarget)
) {
let elm = this.lastFocus;
if (!elm) {
elm = this.getFocusable();
elm = elm[Math.min(1, elm.length - 1)];
}
elm.focus({ preventScroll: true });
}
// The element receiving focus is not self
else if (e.target != this.close.element)
this.lastFocus = e.target;
// Bring the window to the front among its siblings
if (this.parent instanceof Toolkit.Desktop)
this.parent.bringToFront(this);
}
// Window key press
onKeyDown(e) {
// Take no action
if (e.altKey || e.ctrlKey || e.key != "Tab")
return;
// Move focus to the next element in the sequence
let focuses = this.getFocusable();
let nowIndex = focuses.indexOf(document.activeElement) || 0;
let nextIndex = nowIndex + focuses.length + (e.shiftKey ? -1 : 1);
let target = focuses[nextIndex % focuses.length];
Toolkit.handle(e);
target.focus();
}
// Title bar pointer down
onTitleDown(e) {
// Do not drag
if (e.button != 0 || this.app.drag != null)
return;
// Initiate dragging
this.drag = {
height: this.outerHeight,
left : this.left,
top : this.top,
width : this.outerWidth,
x : e.clientX,
y : e.clientY
};
// Configure event
this.focus();
this.app.drag = e;
Toolkit.handle(e);
}
// Title bar pointer move
onTitleMove(e) {
// Not dragging
if (this.app.drag != e.target)
return;
// Working variables
let bParent = this.parent.element.getBoundingClientRect();
// Move horizontally
let left = this.drag.left + e.clientX - this.drag.x;
left = Math.min(left, bParent.width - 16);
left = Math.max(left, 16 - this.drag.width);
this.element.style.left = left + "px";
// Move vertically
let top = this.drag.top + e.clientY - this.drag.y;
top = Math.min(top, bParent.height - this.minHeight);
top = Math.max(top, 0);
this.element.style.top = top + "px";
// Configure event
Toolkit.handle(e);
}
// Title bar pointer up
onTitleUp(e) {
// Not dragging
if (e.button != 0 || this.app.drag != e.target)
return;
// Configure instance fields
this.drag = null;
// Configure event
this.app.drag = null;
Toolkit.handle(e);
}
///////////////////////////// Public Methods //////////////////////////////
// Bring the window to the front among its siblings
bringToFront() {
if (this.parent != null)
this.parent.bringToFront(this);
}
// Set focus on the component
focus() {
if (!this.contains(document.activeElement))
(this.lastFocus || this.element).focus({ preventScroll: true });
if (this.parent instanceof Toolkit.Desktop)
this.parent.bringToFront(this);
}
// Height of client
get height() { return this.client.getBoundingClientRect().height; }
set height(height) {
this.element.style.height =
this.outerHeight - this.height + Math.max(height, 0) + "px";
}
// Position of window left edge
get left() {
return this.element.getBoundingClientRect().left - (
this.parent == null ? 0 :
this.parent.element.getBoundingClientRect().left
);
}
set left(left) {
if (this.parent != null) {
left = Math.min(left,
this.parent.element.getBoundingClientRect().width - 16);
}
left = Math.max(left, 16 - this.outerWidth);
this.element.style.left = left + "px";
}
// Height of entire window
get outerHeight() { return this.element.getBoundingClientRect().height; }
set outerHeight(height) {
height = Math.max(height, this.minHeight);
this.element.style.height = height + "px";
}
// Width of entire window
get outerWidth() { return this.element.getBoundingClientRect().width; }
set outerWidth(width) {
width = Math.max(width, 32);
this.element.style.width = width + "px";
let left = this.left;
if (left + width < 16)
this.element.style.left = 16 - width + "px";
}
// Specify the window title
setTitle(title, localize) {
this.setString("text", title, localize);
}
// Position of window top edge
get top() {
return this.element.getBoundingClientRect().top - (
this.parent == null ? 0 :
this.parent.element.getBoundingClientRect().top
);
}
set top(top) {
if (this.parent != null) {
top = Math.min(top, -this.minHeight +
this.parent.element.getBoundingClientRect().height);
}
top = Math.max(top, 0);
this.element.style.top = top + "px";
}
// Specify whether the element is visible
get visible() { return super.visible; }
set visible(visible) {
let prevSetting = super.visible;
let prevActual = this.isVisible();
super.visible = visible;
let nowActual = this.isVisible();
if (!nowActual && this.contains(document.activeElement))
document.activeElement.blur();
}
// Width of client
get width() { return this.client.getBoundingClientRect().width; }
set width(width) {
this.outerWidth = this.outerWidth - this.width + Math.max(width, 32);
}
///////////////////////////// Package Methods /////////////////////////////
// Add a child component to the primary client region of this component
append(element) {
this.client.append(element);
}
// Update localization strings
localize() {
this.localizeText(this.title);
if ((this.title.textContent || "") == "")
this.title.innerText = "\u00a0"; // &nbsp;
this.close.localize();
}
///////////////////////////// Private Methods /////////////////////////////
// Cancel a move or resize dragging operaiton
cancelDrag() {
this.app.drag = null;
this.element.style.height = this.drag.height + "px";
this.element.style.left = this.drag.left + "px";
this.element.style.top = this.drag.top + "px";
this.element.style.width = this.drag.width + "px";
this.drag = null;
}
// Minimum height of window
get minHeight() {
return (
this.client .getBoundingClientRect().top -
this.element.getBoundingClientRect().top +
parseFloat(this.style.borderBottomWidth)
);
}
}
export { register };