# ColorPalette.js

    /**
     * @class Ext.ColorPalette
     * @extends Ext.Component
     * Simple color palette class for choosing colors.  The palette can be rendered to any container.<br />
     * Here's an example of typical usage:
     * <pre><code>
    var cp = new Ext.ColorPalette({value:'993300'});  // initial selected color
    cp.render('my-div');

    cp.on('select', function(palette, selColor){
        // do something with selColor
    });
    </code></pre>
     * @constructor
     * Create a new ColorPalette
     * @param {Object} config The config object
     */
    Ext.ColorPalette = function(config){
        Ext.ColorPalette.superclass.constructor.call(this, config);
        this.addEvents({
            /**
    	     * @event select
    	     * Fires when a color is selected
    	     * @param {ColorPalette} this
    	     * @param {String} color The 6-digit color hex code (without the # symbol)
    	     */
            select: true
        });

        if(this.handler){
            this.on("select", this.handler, this.scope, true);
        }
    };
    Ext.extend(Ext.ColorPalette, Ext.Component, {
        /**
         * @cfg {String} itemCls
         * The CSS class to apply to the containing element (defaults to "x-color-palette")
         */
        itemCls : "x-color-palette",
        /**
         * @cfg {String} value
         * The initial color to highlight (should be a valid 6-digit color hex code without the # symbol).  Note that
         * the hex codes are case-sensitive.
         */
        value : null,
        clickEvent:'click',
        // private
        ctype: "Ext.ColorPalette",

        /**
         * @cfg {Boolean} allowReselect If set to true then reselecting a color that is already selected fires the selection event
         */
        allowReselect : false,

        /**
         * <p>An array of 6-digit color hex code strings (without the # symbol).  This array can contain any number
         * of colors, and each hex code should be unique.  The width of the palette is controlled via CSS by adjusting
         * the width property of the 'x-color-palette' class (or assigning a custom class), so you can balance the number
         * of colors with the width setting until the box is symmetrical.</p>
         * <p>You can override individual colors if needed:</p>
         * <pre><code>
    var cp = new Ext.ColorPalette();
    cp.colors[0] = "FF0000";  // change the first box to red
    </code></pre>

    Or you can provide a custom array of your own for complete control:
    <pre><code>
    var cp = new Ext.ColorPalette();
    cp.colors = ["000000", "993300", "333300"];
    </code></pre>
         * @type Array
         */
        colors : [
            "000000", "993300", "333300", "003300", "003366", "000080", "333399", "333333",
            "800000", "FF6600", "808000", "008000", "008080", "0000FF", "666699", "808080",
            "FF0000", "FF9900", "99CC00", "339966", "33CCCC", "3366FF", "800080", "969696",
            "FF00FF", "FFCC00", "FFFF00", "00FF00", "00FFFF", "00CCFF", "993366", "C0C0C0",
            "FF99CC", "FFCC99", "FFFF99", "CCFFCC", "CCFFFF", "99CCFF", "CC99FF", "FFFFFF"
        ],

        // private
        onRender : function(container, position){
            var t = new Ext.MasterTemplate(
                '<tpl><a href="#" class="color-{0}" hidefocus="on"><em><span style="background:#{0}" unselectable="on">&#160;</span></em></a></tpl>'
            );
            var c = this.colors;
            for(var i = 0, len = c.length; i < len; i++){
                t.add([c[i]]);
            }
            var el = document.createElement("div");
            el.className = this.itemCls;
            t.overwrite(el);
            container.dom.insertBefore(el, position);
            this.el = Ext.get(el);
            this.el.on(this.clickEvent, this.handleClick,  this, {delegate: "a"});
            if(this.clickEvent != 'click'){
                this.el.on('click', Ext.emptyFn,  this, {delegate: "a", preventDefault:true});
            }
        },

        // private
        afterRender : function(){
            Ext.ColorPalette.superclass.afterRender.call(this);
            if(this.value){
                var s = this.value;
                this.value = null;
                this.select(s);
            }
        },

        // private
        handleClick : function(e, t){
            e.preventDefault();
            if(!this.disabled){
                var c = t.className.match(/(?:^|\s)color-(.{6})(?:\s|$)/)[1];
                this.select(c.toUpperCase());
            }
        },

        /**
         * Selects the specified color in the palette (fires the select event)
         * @param {String} color A valid 6-digit color hex code (# will be stripped if included)
         */
        select : function(color){
            color = color.replace("#", "");
            if(color != this.value || this.allowReselect){
                var el = this.el;
                if(this.value){
                    el.child("a.color-"+this.value).removeClass("x-color-palette-sel");
                }
                el.child("a.color-"+color).addClass("x-color-palette-sel");
                this.value = color;
                this.fireEvent("select", this, color);
            }
        }
    });

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