dojo.provide("dojo.widget.ColorPalette");
dojo.require("dojo.widget.*");
dojo.require("dojo.html.layout");
dojo.require("dojo.html.display");
dojo.require("dojo.html.selection");

dojo.widget.defineWidget(
	"dojo.widget.ColorPalette",
	dojo.widget.HtmlWidget,
{
	// summary
	//		Grid showing various colors, so the user pick a certain color
	
	// palette: String
	//		Size of grid, either "7x10" or "3x4".
	palette: "7x10",

	_palettes: {
		"7x10": [["fff", "fcc", "fc9", "ff9", "ffc", "9f9", "9ff", "cff", "ccf", "fcf"],
			["ccc", "f66", "f96", "ff6", "ff3", "6f9", "3ff", "6ff", "99f", "f9f"],
			["c0c0c0", "f00", "f90", "fc6", "ff0", "3f3", "6cc", "3cf", "66c", "c6c"],
			["999", "c00", "f60", "fc3", "fc0", "3c0", "0cc", "36f", "63f", "c3c"],
			["666", "900", "c60", "c93", "990", "090", "399", "33f", "60c", "939"],
			["333", "600", "930", "963", "660", "060", "366", "009", "339", "636"],
			["000", "300", "630", "633", "330", "030", "033", "006", "309", "303"]],

		"3x4": [["ffffff"/*white*/, "00ff00"/*lime*/, "008000"/*green*/, "0000ff"/*blue*/],
			["c0c0c0"/*silver*/, "ffff00"/*yellow*/, "ff00ff"/*fuchsia*/, "000080"/*navy*/],
			["808080"/*gray*/, "ff0000"/*red*/, "800080"/*purple*/, "000000"/*black*/]]
			//["00ffff"/*aqua*/, "808000"/*olive*/, "800000"/*maroon*/, "008080"/*teal*/]];
	},

	buildRendering: function () {
		this.domNode = document.createElement("table");
		dojo.html.disableSelection(this.domNode);
		dojo.event.connect(this.domNode, "onmousedown", function (e) {
			e.preventDefault();
		});
		with (this.domNode) { // set the table's properties
			cellPadding = "0"; cellSpacing = "1"; border = "1";
			style.backgroundColor = "white";
		}
		var colors = this._palettes[this.palette];
		for (var i = 0; i < colors.length; i++) {
			var tr = this.domNode.insertRow(-1);
			for (var j = 0; j < colors[i].length; j++) {
				if (colors[i][j].length == 3) {
					colors[i][j] = colors[i][j].replace(/(.)(.)(.)/, "$1$1$2$2$3$3");
				}

				var td = tr.insertCell(-1);
				with (td.style) {
					backgroundColor = "#" + colors[i][j];
					border = "1px solid gray";
					width = height = "15px";
					fontSize = "1px";
				}

				td.color = "#" + colors[i][j];

				td.onmouseover = function (e) { this.style.borderColor = "white"; }
				td.onmouseout = function (e) { this.style.borderColor = "gray"; }
				dojo.event.connect(td, "onmousedown", this, "onClick");

				td.innerHTML = "&nbsp;";
			}
		}
	},

	onClick: function(/*Event*/ e) {
		this.onColorSelect(e.currentTarget.color);
		e.currentTarget.style.borderColor = "gray";
	},

	onColorSelect: function(color){
		// summary:
		//		Callback when a color is selected.
		// color: String
		//		Hex value corresponding to color.
	}
});
