"use strict";

// Select-only radio button
Toolkit.RadioButton = class RadioButton extends Toolkit.CheckBox {

    // Object constructor
    constructor(application, options) {
        super(application, options);
        options = options || {};

        // Configure instance fields
        this.group = null;

        // Configure element
        this.element.setAttribute("role", "radio");

        // Configure properties
        this.setGroup(options.group || null);
    }



    ///////////////////////////// Public Methods //////////////////////////////

    // Retrieve the enclosing ButtonGroup
    getGroup() {
        return this.group;
    }

    // Specify whether the component is checked (overrides superclass)
    setChecked(checked, e) {
        checked = !!checked;
        if (e instanceof Event && !checked || checked == this.checked)
            return;

        this.checked = checked;
        this.element.setAttribute("aria-checked", checked);
        if (this.group != null && e != this.group)
            this.group.setChecked(this);

        if (e === undefined)
            return;
        for (let listener of this.changeListeners)
            listener(e);
    }

    // Specify the enclosing ButtonGroup
    setGroup(group) {
        group = group || null;
        if (group == this.group)
            return;
        if (this.group != null)
            this.group.remove(this);
        this.group = group;
        if (group != null)
            group.add(this);
    }

};