Introducing the main window, yet more tweaks to localization support

locale/en-US.txt

@@ -6,6 +6,7 @@ locale {
 
 # Main window
 app {
+
   title {
     default     PVB Emulator
     mixed       {ctrl.number} {ctrl.filename} - {app.title.default}
@@ -16,6 +17,7 @@ app {
   file {
     (menu)      File
     load_rom    Load ROM...
+    new_window  New window
     exit        Exit
   }
 
@@ -30,3 +32,11 @@ core {
   windows-x86       Windows (32-bit)
   windows-x86_64    Windows (64-bit)
 }
+
+# File dialog
+dialog {
+  load              Load
+  load_rom          Load ROM
+  load_rom_error    Unable to load the selected ROM file.
+  load_rom_notvb    The selected file does not appear to be a Virtual Boy ROM.
+}

makefile

@@ -84,7 +84,7 @@ pack:
 	$(eval jarname = "pvbemu_`date +%Y%m%d`.jar")
 	@echo "  Bundling into $(jarname)"
 	@jar -cfe $(jarname) Main *.class \
-        app locale native src util vue makefile license.txt
+        app images locale native src util vue makefile license.txt
 
 # Delete only Java .class files
 .PHONY: clean_desktop

src/desktop/app/App.java

@@ -12,6 +12,7 @@ public class App {
     // Instance fields
     private Localizer.Locale[] locales;   // Language translations
     private Localizer          localizer; // UI localization manager
+    private ArrayList<Window>  windows;   // Application windows
 
 
 
@@ -24,41 +25,55 @@ public class App {
 
         // Instance fields
         localizer = new Localizer();
+        windows   = new ArrayList<Window>();
 
         // Additional processing
         initLocales();
+        addWindow();
     }
 
 
 
     ///////////////////////////////////////////////////////////////////////////
-    //                            Public Methods                             //
+    //                            Package Methods                            //
     ///////////////////////////////////////////////////////////////////////////
 
-    // Associate a control with the localizer
+    // Add a new program window
-    public boolean addControl(Object control, Object key) {
+    void addWindow() {
-        return localizer.add(control, key);
+        windows.add(new Window(this));
+        windowsChanged();
     }
 
     // Retrieve the currently active locale
-    public Localizer.Locale getLocale() {
+    Localizer.Locale getLocale() {
         return localizer.getLocale();
     }
 
+    // Retrieve the localization manager
+    Localizer getLocalizer() {
+        return localizer;
+    }
+
     // Retrieve a list of registered locales
-    public Localizer.Locale[] listLocales() {
+    Localizer.Locale[] listLocales() {
         var ret = new Localizer.Locale[locales.length];
         System.arraycopy(locales, 0, ret, 0, locales.length);
         return ret;
     }
 
-    // Remove a control from the localizer
+    // Determine the number of a window in the collection
-    public boolean removeControl(Object control) {
+    int numberOf(Window window) {
-        return localizer.remove(control);
+        return windows.indexOf(window) + 1;
+    }
+
+    // Remove a program window
+    void removeWindow(Window window) {
+        windows.remove(window);
+        windowsChanged();
     }
 
     // Specify a new locale
-    public void setLocale(Localizer.Locale locale) {
+    void setLocale(Localizer.Locale locale) {
         localizer.setLocale(locale);
     }
 
@@ -110,4 +125,11 @@ public class App {
         localizer.setLocale(locale != null ? locale : this.locales[0]);
     }
 
+    // A window has been added to or removed from the program state
+    private void windowsChanged() {
+        int count = windows.size();
+        for (int x = 0; x < count; x++)
+            windows.get(x).windowsChanged(x + 1, count == 1);
+    }
+
 }

src/desktop/app/Window.java

@@ -0,0 +1,218 @@
+package app;
+
+// Java imports
+import java.awt.*;
+import java.awt.image.*;
+import java.io.*;
+import javax.swing.*;
+import javax.swing.filechooser.*;
+
+// Project imports
+import util.*;
+
+// Main application window
+class Window extends JFrame {
+
+    // Instance fields
+    private App     app;     // Containing application
+    private int     number;  // Window number within application
+    private boolean only;    // This is the only application window
+    private File    romFile; // Currently loaded ROM file
+
+    // UI components
+    private File   pwd;   // Most recent working directory
+    private JPanel video; // Video output
+
+
+
+    ///////////////////////////////////////////////////////////////////////////
+    //                               Constants                               //
+    ///////////////////////////////////////////////////////////////////////////
+
+    // Application icon
+    private static final BufferedImage APPICON;
+
+    // Static initializer
+    static {
+        APPICON = Util.imageRead("images/app_icon.png");
+    }
+
+
+
+    ///////////////////////////////////////////////////////////////////////////
+    //                             Constructors                              //
+    ///////////////////////////////////////////////////////////////////////////
+
+    // Default constructor
+    Window(App app) {
+        super();
+
+        // Configure instance fields
+        this.app = app;
+
+        // Configure video pane
+        video = new JPanel() {
+            public void paintComponent(Graphics g) {
+                super.paintComponent(g);
+                onPaintVideo((Graphics2D) g, getWidth(), getHeight());
+            }
+        };
+        video.setPreferredSize(new Dimension(384, 224));
+
+        // Configure window
+        addWindowListener(Util.onClose(e->onClose()));
+        setContentPane(video);
+        setDefaultCloseOperation(DO_NOTHING_ON_CLOSE);
+        setIconImage(APPICON);
+        setJMenuBar(initMenus());
+        app.getLocalizer().add(this, "app.title.default");
+
+        // Display window
+        pack();
+        setLocationRelativeTo(null);
+        setVisible(true);
+    }
+
+
+
+    ///////////////////////////////////////////////////////////////////////////
+    //                           Menu Constructors                           //
+    ///////////////////////////////////////////////////////////////////////////
+
+    // Produce the window's menu bar
+    private JMenuBar initMenus() {
+        var bar = new JMenuBar();
+        var loc = app.getLocalizer();
+        bar.setBorder(null);
+        bar.add(initMenuFile(loc));
+        return bar;
+    }
+
+    // Initialize the File menu
+    private JMenu initMenuFile(Localizer loc) {
+        var mnuFile = new JMenu();
+        loc.add(mnuFile, "app.file.(menu)");
+
+        var mnuFileLoadRom = new JMenuItem();
+        loc.add(mnuFileLoadRom, "app.file.load_rom");
+        mnuFileLoadRom.addActionListener(e->onLoadROM());
+        mnuFile.add(mnuFileLoadRom);
+
+        mnuFile.addSeparator();
+
+        var mnuFileNewWindow = new JMenuItem();
+        loc.add(mnuFileNewWindow, "app.file.new_window");
+        mnuFileNewWindow.addActionListener(e->onNewWindow());
+        mnuFile.add(mnuFileNewWindow);
+
+        var mnuFileExit = new JMenuItem();
+        loc.add(mnuFileExit, "app.file.exit");
+        mnuFileExit.addActionListener(e->onClose());
+        mnuFile.add(mnuFileExit);
+
+        return mnuFile;
+    }
+
+
+
+    ///////////////////////////////////////////////////////////////////////////
+    //                            Package Methods                            //
+    ///////////////////////////////////////////////////////////////////////////
+
+    // A window has been added to or removed from the program state
+    void windowsChanged(int number, boolean only) {
+        this.number = number;
+        this.only   = only;
+        app.getLocalizer().put(this, "ctrl.number", "" + number);
+        updateTitle();
+    }
+
+
+
+    ///////////////////////////////////////////////////////////////////////////
+    //                            Event Handlers                             //
+    ///////////////////////////////////////////////////////////////////////////
+
+    // Window close, File -> Exit
+    private void onClose() {
+        app.removeWindow(this);
+        dispose();
+    }
+
+    // File -> Load ROM
+    private void onLoadROM() {
+        var loc = app.getLocalizer();
+
+        // Prompt the user to select a file
+        var dlgFile = new JFileChooser(pwd);
+        dlgFile.addChoosableFileFilter(new FileNameExtensionFilter(
+            "Virtual Boy ROMs (*.vb)", "vb"));
+        dlgFile.addChoosableFileFilter(new FileNameExtensionFilter(
+            "ISX modules (*.isx)", "isx"));
+        dlgFile.setAcceptAllFileFilterUsed(true);
+        dlgFile.setDialogTitle(loc.get("dialog.load_rom"));
+        int option = dlgFile.showDialog(this, loc.get("dialog.load"));
+
+        // The user did not select a file
+        var file = dlgFile.getSelectedFile();
+        if (option != JFileChooser.APPROVE_OPTION || file == null)
+            return;
+
+        // Update the current directory
+        pwd = file.getParentFile();
+
+        // Attempt to load the ROM file
+        var data = Util.fileRead(file);
+        if (data == null) {
+            JOptionPane.showMessageDialog(this,
+                loc.get("dialog.load_rom_error"),
+                loc.get("dialog.load_rom"),
+                JOptionPane.ERROR_MESSAGE
+            );
+            return;
+        }
+
+        // Update the emulation state
+        romFile = file;
+        loc.put(this, "ctrl.filename", file.getName());
+        updateTitle();
+    }
+
+    // File -> New window
+    private void onNewWindow() {
+        app.addWindow();
+    }
+
+    // Video paint
+    private void onPaintVideo(Graphics2D g, int width, int height) {
+        int scale = Math.max(1, Math.min(width / 384, height / 224));
+
+        g.translate(
+            Math.max(0, (width  - scale * 384) / 2),
+            Math.max(0, (height - scale * 224) / 2)
+        );
+        g.scale(scale, scale);
+
+        g.setColor(Color.black);
+        g.fillRect(0, 0, 384, 224);
+    }
+
+
+
+    ///////////////////////////////////////////////////////////////////////////
+    //                            Private Methods                            //
+    ///////////////////////////////////////////////////////////////////////////
+
+    // Update the window title
+    private void updateTitle() {
+        app.getLocalizer().add(this,
+            only ? romFile != null ?
+                "app.title.rom" :
+                "app.title.default"
+            : romFile != null ?
+                "app.title.mixed" :
+                "app.title.number"
+        );
+    }
+
+}

src/desktop/util/Localizer.java

@@ -10,9 +10,8 @@ import javax.swing.text.*;
 public class Localizer {
 
     // Instance fields
-    private HashMap<Object, Object> controls; // Control mapping
+    private HashMap<Object, Control> controls; // Control mapping
-    private Locale                  locale;   // Current message store
+    private Locale                   locale;   // Current message store
-    private HashMap<Object, HashMap<String, String>> tags; // Control messages
 
 
 
@@ -29,6 +28,18 @@ public class Localizer {
     //                                Classes                                //
     ///////////////////////////////////////////////////////////////////////////
 
+    // Control settings
+    private static class Control {
+        String   key;    // Single-string dictionary key
+        String[] keys;   // Multiple-string dictionary key
+        String   tipKey; // Tooltip dictionary key
+        HashMap<String, String> tags; // Message overrides
+        Control(String tipKey) {
+            tags        = new HashMap<String, String>();
+            this.tipKey = tipKey;
+        }
+    }
+
     // Locale container
     public static class Locale implements Comparable<Locale> {
 
@@ -265,8 +276,7 @@ public class Localizer {
 
     // Default constructor
     public Localizer() {
-        controls = new HashMap<Object, Object>();
+        controls = new HashMap<Object, Control>();
-        tags     = new HashMap<Object, HashMap<String, String>>();
     }
 
     // Parsing constructor
@@ -283,6 +293,14 @@ public class Localizer {
 
     // Add a control to the collection
     public boolean add(Object control, Object key) {
+        return add(control, key, null);
+    }
+
+    // Add a control with a tooltip to the collection
+    public boolean add(Object control, Object key, String tipKey) {
+        var ctrl = controls.get(control);
+        if (ctrl == null)
+            ctrl = new Control(tipKey);
 
         // Error checking
         if (control == null || key == null)
@@ -290,6 +308,8 @@ public class Localizer {
 
         // Control takes a single string
         if (key instanceof String) {
+
+            // Type validation
             if (!(
                 control instanceof AbstractButton ||
                 control instanceof JFrame         ||
@@ -297,22 +317,31 @@ public class Localizer {
                 control instanceof JPanel         || // TitledBorder
                 control instanceof JTextComponent
             )) return false;
+
+            // Configure key
+            ctrl.key = (String) key;
         }
 
         // Control takes an array of strings
         else if (key instanceof String[]) {
+
+            // Type validation
             if (!(
                 JCOMBOBOX.getClass().isAssignableFrom(control.getClass())
             )) return false;
+
+            // Configure keys
+            String[] keys = (String[]) key;
+            ctrl.keys = new String[keys.length];
+            System.arraycopy(keys, 0, ctrl.keys, 0, keys.length);
         }
 
         // Invalid control type
         else return false;
 
         // Add the control to the collection
-        controls.put(control, key);
+        controls.put(control, ctrl);
-        tags    .put(control, new HashMap<String, String>());
+        update(control);
-        update();
         return true;
     }
 
@@ -321,6 +350,11 @@ public class Localizer {
         controls.clear();
     }
 
+    // Evaluate the message for a given key
+    public String get(String key) {
+        return key == null ? null : evaluate(null, key);
+    }
+
     // Retrieve the currently loaded locale
     public Locale getLocale() {
         return locale;
@@ -328,21 +362,26 @@ public class Localizer {
 
     // Configure a control tag
     public String put(Object control, String key, String value) {
-        if (controls.get(control) == null || key == null)
+        var ctrl = controls.get(control);
+
+        // Error checking
+        if (ctrl == null || key == null)
             return null;
-        var tags = this.tags.get(control);
+
+        // Update the control's tags
         key = key.toLowerCase();
         String ret = value == null ?
-            tags.remove(key) :
+            ctrl.tags.remove(key) :
-            tags.put(key, value)
+            ctrl.tags.put(key, value)
         ;
-        update();
+
+        // Refresh the text on the control
+        update(control);
         return ret;
     }
 
     // Remove a control from the collection
     public boolean remove(Object control) {
-        tags.remove(control);
         return controls.remove(control) != null;
     }
 
@@ -358,7 +397,7 @@ public class Localizer {
     ///////////////////////////////////////////////////////////////////////////
 
     // Process substitutions and escapes on a message for a given key
-    private String evaluate(Object control, String key) {
+    private String evaluate(Control control, String key) {
 
         // No locale is loaded
         if (locale == null)
@@ -395,7 +434,7 @@ public class Localizer {
                 // Determine the substitution
                        key   = new String(chars, start, x - start);
                 String lkey  = key.toLowerCase();
-                String value = tags.get(control).get(lkey);
+                String value = control == null ? null : control.tags.get(lkey);
                 if (value == null)
                     value = locale.messages.get(lkey);
                 if (value == null)
@@ -430,68 +469,66 @@ public class Localizer {
 
     // Update the text for all controls
     private void update() {
+        for (var control : controls.keySet())
+            update(control);
+    }
 
-        // Process all controls
+    // Update the text for a control
-        for (var control : controls.keySet()) {
+    private void update(Object control) {
-            Object   key    = controls.get(control);
+        var      ctrl   = controls.get(control);
-            String[] values = null;
+        String[] keys   = ctrl.key==null ? ctrl.keys : new String[]{ctrl.key};
+        String[] values = new String[keys.length];
 
-            // One string
+        // Evaluate all messages
-            if (key instanceof String)
+        for (int x = 0; x < keys.length; x++)
-                values = new String[] { evaluate(control, (String) key) };
+            values[x] = evaluate(ctrl, keys[x]);
 
-            // Multiple strings
+        // Update the control's text
-            else {
+        if (control instanceof AbstractButton)
-                String[] keys = (String[]) key;
+            ((AbstractButton) control).setText (values[0]);
-                values = new String[keys.length];
+        if (control instanceof JFrame)
-                for (int x = 0; x < keys.length; x++)
+            ((JFrame        ) control).setTitle(values[0]);
-                    values[x] = evaluate(control, keys[x]);
+        if (control instanceof JInternalFrame)
-            }
+            ((JInternalFrame) control).setTitle(values[0]);
-
+        if (control instanceof JTextComponent)
-            // Update the control's text
+            ((JTextComponent) control).setText (values[0]);
-            if (control instanceof AbstractButton)
-                ((AbstractButton) control).setText (values[0]);
-            if (control instanceof JFrame)
-                ((JFrame        ) control).setTitle(values[0]);
-            if (control instanceof JInternalFrame)
-                ((JInternalFrame) control).setTitle(values[0]);
-            if (control instanceof JTextComponent)
-                ((JTextComponent) control).setText (values[0]);
-
-            // JPanel must be wrapped in a TitledBorder
-            if (control instanceof JPanel) {
-                var border = ((JPanel) control).getBorder();
-                if (border instanceof TitledBorder)
-                    ((TitledBorder) border).setTitle(values[0]);
-            }
-
-            // Replace the contents of a JComboBox without firing events
-            if (JCOMBOBOX.getClass().isAssignableFrom(control.getClass())) {
-
-                // The type is explicitly verified above
-                @SuppressWarnings("unchecked")
-                var box = (JComboBox<String>) control;
-
-                // Configure working variables
-                var action = box.getActionListeners();
-                int index  = box.getSelectedIndex();
-                var item   = box.getItemListeners();
-
-                // Remove event listeners
-                for (var lst : action) box.removeActionListener(lst);
-                for (var lst : item  ) box.removeItemListener  (lst);
-
-                // Update contents
-                box.setModel(new DefaultComboBoxModel<String>(values));
-                box.setSelectedIndex(index);
-
-                // Restore event listeners
-                for (var lst : action) box.addActionListener(lst);
-                for (var lst : item  ) box.addItemListener  (lst);
-            }
 
+        // JPanel must be wrapped in a TitledBorder
+        if (control instanceof JPanel) {
+            var border = ((JPanel) control).getBorder();
+            if (border instanceof TitledBorder)
+                ((TitledBorder) border).setTitle(values[0]);
         }
 
+        // Replace the contents of a JComboBox without firing events
+        if (JCOMBOBOX.getClass().isAssignableFrom(control.getClass())) {
+
+            // The type is explicitly verified above
+            @SuppressWarnings("unchecked")
+            var box = (JComboBox<String>) control;
+
+            // Configure working variables
+            var action = box.getActionListeners();
+            int index  = box.getSelectedIndex();
+            var item   = box.getItemListeners();
+
+            // Remove event listeners
+            for (var lst : action) box.removeActionListener(lst);
+            for (var lst : item  ) box.removeItemListener  (lst);
+
+            // Update contents
+            box.setModel(new DefaultComboBoxModel<String>(values));
+            box.setSelectedIndex(index);
+
+            // Restore event listeners
+            for (var lst : action) box.addActionListener(lst);
+            for (var lst : item  ) box.addItemListener  (lst);
+        }
+
+        // Update the control's tooltip text
+        if (control instanceof JComponent)
+            ((JComponent) control).setToolTipText(
+                ctrl.tipKey == null ? null : evaluate(ctrl, ctrl.tipKey));
     }
 
 }

src/desktop/util/Util.java

@@ -117,6 +117,18 @@ public final class Util {
         return new Color(bits, true);
     }
 
+    // Read a file from disk
+    public static byte[] fileRead(File file) {
+        FileInputStream stream = null;
+        byte[]          data   = null;
+        try {
+            stream = new FileInputStream(file);
+            data    = stream.readAllBytes();
+        } catch (Exception e) { }
+        try { stream.close(); } catch (Exception e) { }
+        return data;
+    }
+
     // Read a file, first from disk, then from .jar
     public static byte[] fileRead(String filename) {
         InputStream stream = null;