wp/nwyj/.svn/pristine/65/65c59fc1979e756191e53614b918fd3274217151.svn-base

/*
 * Ext JS Library 2.0 Copyright(c) 2006-2007, Ext JS, LLC. licensing@extjs.com
 * 
 * http://extjs.com/license
 */

/**
 * @class Ext.menu.BaseItem
 * @extends Ext.Component The base class for all items that render into menus.
 *          BaseItem provides default rendering, activated state management and
 *          base configuration options shared by all menu components.
 * @constructor Creates a new BaseItem
 * @param {Object}
 *            config Configuration options
 */
Ext.menu.BaseItem = function(config) {
	Ext.menu.BaseItem.superclass.constructor.call(this, config);

	this.addEvents(
			/**
			 * @event click Fires when this item is clicked
			 * @param {Ext.menu.BaseItem}
			 *            this
			 * @param {Ext.EventObject}
			 *            e
			 */
			'click',
			/**
			 * @event activate Fires when this item is activated
			 * @param {Ext.menu.BaseItem}
			 *            this
			 */
			'activate',
			/**
			 * @event deactivate Fires when this item is deactivated
			 * @param {Ext.menu.BaseItem}
			 *            this
			 */
			'deactivate');

	if (this.handler) {
		this.on("click", this.handler, this.scope);
	}
};

Ext.extend(Ext.menu.BaseItem, Ext.Component, {
	/**
	 * @cfg {Function} handler A function that will handle the click event of
	 *      this menu item (defaults to undefined)
	 */
	/**
	 * @cfg {Object} scope The scope in which the handler function will be
	 *      called.
	 */
	/**
	 * @cfg {Boolean} canActivate True if this item can be visually activated
	 *      (defaults to false)
	 */
	canActivate : false,
	/**
	 * @cfg {String} activeClass The CSS class to use when the item becomes
	 *      activated (defaults to "x-menu-item-active")
	 */
	activeClass : "x-menu-item-active",
	/**
	 * @cfg {Boolean} hideOnClick True to hide the containing menu after this
	 *      item is clicked (defaults to true)
	 */
	hideOnClick : true,
	/**
	 * @cfg {Number} hideDelay Length of time in milliseconds to wait before
	 *      hiding after a click (defaults to 100)
	 */
	hideDelay : 100,

	// private
	ctype : "Ext.menu.BaseItem",

	// private
	actionMode : "container",

	// private
	render : function(container, parentMenu) {
		this.parentMenu = parentMenu;
		Ext.menu.BaseItem.superclass.render.call(this, container);
		this.container.menuItemId = this.id;
	},

	// private
	onRender : function(container, position) {
		this.el = Ext.get(this.el);
		container.dom.appendChild(this.el.dom);
	},

	/**
	 * Sets the function that will handle click events for this item (equivalent
	 * to passing in the {@link #handler} config property). If an existing
	 * handler is already registered, it will be unregistered for you.
	 * 
	 * @param {Function}
	 *            handler The function that should be called on click
	 * @param {Object}
	 *            scope The scope that should be passed to the handler
	 */
	setHandler : function(handler, scope) {
		if (this.handler) {
			this.un("click", this.handler, this.scope);
		}
		this.on("click", this.handler = handler, this.scope = scope);
	},

	// private
	onClick : function(e) {
		if (!this.disabled && this.fireEvent("click", this, e) !== false
				&& this.parentMenu.fireEvent("itemclick", this, e) !== false) {
			this.handleClick(e);
		} else {
			e.stopEvent();
		}
	},

	// private
	activate : function() {
		if (this.disabled) {
			return false;
		}
		var li = this.container;
		li.addClass(this.activeClass);
		this.region = li.getRegion().adjust(2, 2, -2, -2);
		this.fireEvent("activate", this);
		return true;
	},

	// private
	deactivate : function() {
		this.container.removeClass(this.activeClass);
		this.fireEvent("deactivate", this);
	},

	// private
	shouldDeactivate : function(e) {
		return !this.region || !this.region.contains(e.getPoint());
	},

	// private
	handleClick : function(e) {
		if (this.hideOnClick) {
			this.parentMenu.hide.defer(this.hideDelay, this.parentMenu, [true]);
		}
	},

	// private
	expandMenu : function(autoActivate) {
		// do nothing
	},

	// private
	hideMenu : function() {
		// do nothing
	}
});