sencha touch 侧边栏扩展（只隐藏不销毁）

/**
 *只隐藏不销毁的侧边栏
 * @private
 */
Ext.define(‘ux.Menu.Context‘, {
    extend: ‘Ext.Button‘,
    requires: [‘Ext.ux.ContextMenu‘],
    config: {
        menuItems: [],
        menuSide: ‘right‘,
        menuCover: false,
        menuCls: null,
        listeners: {
            tap: ‘onTap‘
        }
    },
    initialize: function () {
        var me = this;
        me.$menu = Ext.create(‘Ext.ux.ContextMenu‘, {
            cls: me.getMenuCls(),
            items: me.getMenuItems(),
            listeners: {
                scope: me,
                hide: function () {
                    Ext.Viewport.hideMenu(me.getMenuSide());
                }
            }
        });
        me.$menu.on({
            scope: me,
            tap: me.onMenuButtonTap,
            delegate: ‘button‘
        });
        Ext.Viewport.setMenu(me.$menu, {
            side: me.getMenuSide(),
            cover: me.getMenuCover()
        });
        me.callParent(arguments);
    },
    onTap: function (e) {
        this.fireAction(‘showMenu‘, [this], ‘showMenu‘);
        Ext.Viewport.showMenu(this.getMenuSide());
    },
    onMenuButtonTap: function (button) {
        Ext.Viewport.hideMenu(this.getMenuSide());
    }
});