/** @language chinese
 * <p>lufylegend.js专用UI，显示一个消息框/p>
 * <p>使用时需要引进lufylegend.ui-x.x.x.js文件。</p>
 * @class UI:LMessageBox
 * @constructor
 * @extends LSprite
 * @param {Object} properties 弹出框的信息，包含message（内容）［必须］，title（标题）[可省略]，width（宽度）[可省略]，height（高度）[可省略]，size（文字大小）[可省略]，textHeight（文本行高）[可省略]，displayObject（此属性允许向弹出框中添加一个可视对象）[可省略]。
 * @since 0.1.0
 * @examplelink <p><a href="../../../api/ui/LMessageBox.html" target="_blank">测试链接</a></p>
 * @public
 */
var LMessageBox = (function () {
	function LMessageBox () {}
	LMessageBox.show = function (properties) {
		if (!properties.width) {
			properties.width = 500;
		}
		if (!properties.height) {
			properties.height = 300;
		}
		if (!properties.title) {
			properties.title = "";
		}
		if (!properties.size) {
			properties.size = 16;
		}
		if (!properties.textHeight) {
			properties.textHeight = 35;
		}
		if (properties.displayObject) {
			properties.width = properties.displayObject.getWidth();
			properties.height = properties.displayObject.getHeight();
		}
		var translucent = new LSprite();
		translucent.graphics.drawRect(0, "#000000", [0, 0, LGlobal.width, LGlobal.height], true, "#000000");
		translucent.alpha = 0.5;
		LGlobal.stage.addChild(translucent);
		translucent.addEventListener(LMouseEvent.MOUSE_UP, function (e) {});
		translucent.addEventListener(LMouseEvent.MOUSE_DOWN, function (e) {});
		translucent.addEventListener(LMouseEvent.MOUSE_MOVE, function (e) {});
		translucent.addEventListener(LMouseEvent.MOUSE_OVER, function (e) {});
		translucent.addEventListener(LMouseEvent.MOUSE_OUT, function (e) {});
		var myWindow = new LWindow(properties.width, properties.height, properties.title);
		myWindow.x = (LGlobal.width - myWindow.getWidth()) * 0.5;
		myWindow.y = (LGlobal.height - myWindow.getHeight()) * 0.5;
		LGlobal.stage.addChild(myWindow);
		myWindow.addEventListener(LWindow.CLOSE, function (e) {
			translucent.die();
			translucent.remove();
		});			
		if (properties.displayObject) {
			myWindow.layer.addChild(properties.displayObject);
			return;
		}
		var msgLabel = new LTextField();
		msgLabel.width = properties.width - 100;
		msgLabel.setWordWrap(true, properties.textHeight);
		msgLabel.text = properties.message;
		msgLabel.size = properties.size;
		msgLabel.x = (properties.width - msgLabel.width) * 0.5;
		msgLabel.y = (properties.height - myWindow.bar.getHeight() - msgLabel.getHeight()) * 0.5;
		myWindow.layer.addChild(msgLabel);
	};
	return LMessageBox;
})();