带复选框且支持搜索功能的下拉列表1(1--14)

//定义recordvar rec;Ext.form.MultiComboBox = Ext.extend(Ext.form.TriggerField, {    defaultAutoCreate : {tag: "input", type: "text", size: "24", autocomplete: "off"},    listClass: '',    selectedClass: 'x-combo-selected',    triggerClass : 'x-form-arrow-trigger',    shadow:'sides',    listAlign: 'tl-bl?',    maxHeight: 300,    triggerAction: 'query',    minChars : 4,    typeAhead: false,    queryDelay: 500,    pageSize: 0,    selectOnFocus:false,    queryParam: 'query',    loadingText: 'Loading...',    resizable: false,    handleHeight : 8,    editable: true,    allQuery: '',    mode: 'remote',    minListWidth : 70,    forceSelection:false,    typeAheadDelay : 250,    displaySeparator:';',    valueSeparator:',',    lazyInit : true,    initComponent : function()    {        Ext.form.ComboBox.superclass.initComponent.call(this);        this.addEvents('expand', 'collapse', 'beforeselect', 'select', 'beforequery');        if (this.transform)        {            this.allowDomMove = false;            var s = Ext.getDom(this.transform);            if (!this.hiddenName)            {                this.hiddenName = s.name;            }            if (!this.store)            {                this.mode = 'local';                var d = [], opts = s.options;                for (var i = 0, len = opts.length; i < len; i++)                {                    var o = opts[i];                    var value = (Ext.isIE ? o.getAttributeNode('value').specified : o.hasAttribute('value')) ? o.value :                            o.text;                    if (o.selected)                    {                        this.value = value;                    }                    d.push([value, o.text]);                }                this.store = new Ext.data.SimpleStore({                    'id': 0,                    fields: ['value', 'text'],                    data : d                });                this.valueField = 'value';                this.displayField = 'text';            }            s.name = Ext.id(); // wipe out the name in case somewhere else they have a reference            if (!this.lazyRender)            {                this.target = true;                this.el = Ext.DomHelper.insertBefore(s, this.autoCreate || this.defaultAutoCreate);                Ext.removeNode(s); // remove it                this.render(this.el.parentNode);            }            else            {                Ext.removeNode(s); // remove it            }        }        this.selectedIndex = -1;        if (this.mode == 'local')        {            if (this.initialConfig.queryDelay === undefined)            {                this.queryDelay = 10;            }            if (this.initialConfig.minChars === undefined)            {                this.minChars = 0;            }        }    },