CheckItem.js
资源名称:ext-3.0.0.zip [点击查看]
上传用户:shuoshiled
上传日期:2018-01-28
资源大小:10124k
文件大小:4k
源码类别:
中间件编程
开发平台:
JavaScript
- /*!
- * Ext JS Library 3.0.0
- * Copyright(c) 2006-2009 Ext JS, LLC
- * licensing@extjs.com
- * http://www.extjs.com/license
- */
- /**
- * @class Ext.menu.CheckItem
- * @extends Ext.menu.Item
- * Adds a menu item that contains a checkbox by default, but can also be part of a radio group.
- * @constructor
- * Creates a new CheckItem
- * @param {Object} config Configuration options
- * @xtype menucheckitem
- */
- Ext.menu.CheckItem = function(config){
- Ext.menu.CheckItem.superclass.constructor.call(this, config);
- this.addEvents(
- /**
- * @event beforecheckchange
- * Fires before the checked value is set, providing an opportunity to cancel if needed
- * @param {Ext.menu.CheckItem} this
- * @param {Boolean} checked The new checked value that will be set
- */
- "beforecheckchange" ,
- /**
- * @event checkchange
- * Fires after the checked value has been set
- * @param {Ext.menu.CheckItem} this
- * @param {Boolean} checked The checked value that was set
- */
- "checkchange"
- );
- /**
- * A function that handles the checkchange event. The function is undefined by default, but if an implementation
- * is provided, it will be called automatically when the checkchange event fires.
- * @param {Ext.menu.CheckItem} this
- * @param {Boolean} checked The checked value that was set
- * @method checkHandler
- */
- if(this.checkHandler){
- this.on('checkchange', this.checkHandler, this.scope);
- }
- Ext.menu.MenuMgr.registerCheckable(this);
- };
- Ext.extend(Ext.menu.CheckItem, Ext.menu.Item, {
- /**
- * @cfg {String} group
- * All check items with the same group name will automatically be grouped into a single-select
- * radio button group (defaults to '')
- */
- /**
- * @cfg {String} itemCls The default CSS class to use for check items (defaults to "x-menu-item x-menu-check-item")
- */
- itemCls : "x-menu-item x-menu-check-item",
- /**
- * @cfg {String} groupClass The default CSS class to use for radio group check items (defaults to "x-menu-group-item")
- */
- groupClass : "x-menu-group-item",
- /**
- * @cfg {Boolean} checked True to initialize this checkbox as checked (defaults to false). Note that
- * if this checkbox is part of a radio group (group = true) only the last item in the group that is
- * initialized with checked = true will be rendered as checked.
- */
- checked: false,
- // private
- ctype: "Ext.menu.CheckItem",
- // private
- onRender : function(c){
- Ext.menu.CheckItem.superclass.onRender.apply(this, arguments);
- if(this.group){
- this.el.addClass(this.groupClass);
- }
- if(this.checked){
- this.checked = false;
- this.setChecked(true, true);
- }
- },
- // private
- destroy : function(){
- Ext.menu.MenuMgr.unregisterCheckable(this);
- Ext.menu.CheckItem.superclass.destroy.apply(this, arguments);
- },
- /**
- * Set the checked state of this item
- * @param {Boolean} checked The new checked value
- * @param {Boolean} suppressEvent (optional) True to prevent the checkchange event from firing (defaults to false)
- */
- setChecked : function(state, suppressEvent){
- if(this.checked != state && this.fireEvent("beforecheckchange", this, state) !== false){
- if(this.container){
- this.container[state ? "addClass" : "removeClass"]("x-menu-item-checked");
- }
- this.checked = state;
- if(suppressEvent !== true){
- this.fireEvent("checkchange", this, state);
- }
- }
- },
- // private
- handleClick : function(e){
- if(!this.disabled && !(this.checked && this.group)){// disable unselect on radio item
- this.setChecked(!this.checked);
- }
- Ext.menu.CheckItem.superclass.handleClick.apply(this, arguments);
- }
- });
- Ext.reg('menucheckitem', Ext.menu.CheckItem);