/*
 * jQuery UI Panel @VERSION
 *
 * Copyright (c) 2010 AUTHORS.txt (http://jqueryui.com/about)
 * Dual licensed under the MIT (MIT-LICENSE.txt)
 * and GPL (GPL-LICENSE.txt) licenses.
 *
 * http://docs.jquery.com/UI/Panel
 *
 * Depends:
 *	jquery.ui.core.js
 *	jquery.ui.widget.js
 */
(function($) {

$.widget("ui.panel", {
	
	options: {
		icons: {
			header: "ui-icon-triangle-1-e",
			headerSelected: "ui-icon-triangle-1-s"
		}
	},
	
	_create: function() {
		this.element.addClass("ui-panel ui-widget ui-helper-reset");
		
		var self = this;
		this.headers = this.element
			.find("> li > :first-child,> :not(li):even")
			.addClass("ui-panel-header ui-helper-reset ui-state-default ui-corner-all")
			.bind("mouseenter.panel", function() {
				if (self.options.disabled) {
					return;
				}
				$(this).addClass('ui-state-hover');
			})
			.bind("mouseleave.panel", function() {
				$(this).removeClass('ui-state-hover');
			})
			.bind("focus.panel", function() {
				$(this).addClass('ui-state-focus');
			})
			.bind("blur.panel", function() {
				$(this).removeClass('ui-state-focus');
			})
			.bind("click.panel", function(e) {
				if (self.options.disabled) {
					return;
				}
				self.click($(this));
				return false;
			});
		this._createIcons();

		this.headers
			.next()
				.addClass("ui-panel-content ui-helper-reset ui-widget-content ui-corner-bottom")
				.hide();
	},
	
	destroy: function() {
		$.Widget.prototype.destroy.apply(this, arguments);
		this.element
			.removeClass("ui-panel ui-widget ui-helper-reset")
			.removeAttr("role");

		this.headers
			.unbind(".panel")
			.removeClass("ui-panel-header ui-helper-reset ui-state-default ui-corner-all ui-state-active ui-corner-top")
			.removeAttr("role").removeAttr("aria-expanded").removeAttr("tabindex");

		this.headers.find("a").removeAttr("tabindex");
		this._destroyIcons();
		var contents = this.headers.next().css("display", "").removeAttr("role").removeClass("ui-helper-reset ui-widget-content ui-corner-bottom ui-panel-content ui-panel-content-active");
	},
	
	_setOption: function(key, value) {
		$.Widget.prototype._setOption.apply(this, arguments);
			
		if (key == "icons") {
			this._destroyIcons();
			if (value) {
				this._createIcons();
			}
		}
		
	},
	
	_createIcons: function() {
		var o = this.options;
		if (o.icons) {
			$("<span/>").addClass("ui-icon " + o.icons.header).prependTo(this.headers);
			this.headers.filter(".ui-state-active").find(".ui-icon").removeClass(o.icons.header).addClass(o.icons.headerSelected);
			this.element.addClass("ui-panel-icons");
		}
	},
	
	_destroyIcons: function() {
		this.headers.children(".ui-icon").remove();
		this.element.removeClass("ui-panel-icons");
	},
	
	click: function(header) {
		header.toggleClass("ui-state-active ui-corner-top ui-corner-all")
			.find(".ui-icon").toggleClass(this.options.icons.headerSelected).toggleClass(this.options.icons.header);
		header.next().toggleClass("ui-panel-content-active").slideToggle("fast");
	}
});

}(jQuery));