Ext.form.MultiSelect多选

1、css

ext-all.css文件最后，加入css样式

.ux-MultiSelect-icon { width:16px; height:16px; float:left; background-position: -1px -1px ! important; background-repeat:no-repeat ! important; }  

.ux-MultiSelect-icon-checked { background: transparent url(../images/default/menu/checked.gif); }  

.ux-MultiSelect-icon-unchecked { background: transparent url(../images/default/menu/unchecked.gif); }

 

 

2、MultiSelect.js

 

if ('function' !== typeof RegExp.escape)   

{  

    RegExp.escape = function (s)   

    {  

        if ('string' !== typeof s)   

        {  

            return s;  

        }  

        return s.replace(/([.*+?^=!:${}()|[\]\/\\])/g, '\\$1');  

    };  

}  

   

Ext.ns('Ext.form');  

   

Ext.form.MultiSelect = Ext.extend(Ext.form.ComboBox,   

{  

    checkField: 'checked',  

    multi: true,  

    separator: ',',  

    initComponent: function ()   

    {  

        if (!this.tpl)   

        {  

            this.tpl = '<tpl for=".">' + '<div class="x-combo-list-item">'  

                    + '<img src="' + Ext.BLANK_IMAGE_URL + '" '  

                    + 'class="ux-MultiSelect-icon ux-MultiSelect-icon-'  

                    + '{[values.' + this.checkField + '?"checked":"unchecked"'  

                    + ']}">'  

                    + '{[values.' + this.displayField + ']}'  

                    + '</div>'  

                    + '</tpl>';  

        }  

   

        Ext.form.MultiSelect.superclass.initComponent.apply(this, arguments);  

   

        this.on(  

        {  

            scope: this,  

            beforequery: this.onBeforeQuery,  

            blur: this.onRealBlur  

        });  

   

        this.onLoad = this.onLoad.createSequence(function ()   

        {  

            if (this.el)   

            {  

                var v = this.el.dom.value;  

                this.el.dom.value = '';  

                this.el.dom.value = v;  

            }  

        });  

    },  

    initEvents: function ()   

    {  

        Ext.form.MultiSelect.superclass.initEvents.apply(this, arguments);  

        this.keyNav.tab = false;  

    },  

    beforeBlur: function ()   

    {  

    },  

    postBlur: function ()   

    {  

    },  

   

    clearValue: function ()   

    {  

        this.value = '';  

        this.setRawValue(this.value);  

        this.store.clearFilter();  

        this.store.each(function (r)   

        {  

            r.set(this.checkField, false);  

        }, this);  

        if (this.hiddenField)   

        {  

            this.hiddenField.value = '';  

        }  

        this.applyEmptyText();  

    },  

    getCheckedDisplay: function ()   

    {  

        var re = new RegExp(this.separator, "g");  

        return this.getCheckedValue(this.displayField).replace(re, this.separator + ' ');  

    },  

    getCheckedValue: function (field)   

    {  

        field = field || this.valueField;  

        var c = [];  

        var snapshot = this.store.snapshot || this.store.data;  

        snapshot.each(function (r)   

        {  

            if (r.get(this.checkField))   

            {  

                c.push(r.get(field));  

            }  

        }, this);  

   

        return c.join(this.separator);  

    },  

    onBeforeQuery: function (qe)   

    {  

        qe.query = qe.query.replace(new RegExp(RegExp.escape(this.getCheckedDisplay()) + '[ ' + this.separator + ']*'), '');  

    },  

    onRealBlur: function ()   

    {  

        this.list.hide();  

        var rv = this.getRawValue();  

        var rva = rv.split(new RegExp(RegExp.escape(this.separator) + ' *'));  

        var va = [];  

        var snapshot = this.store.snapshot || this.store.data;  

   

        Ext.each(rva, function (v)   

        {  

            snapshot.each(function (r)   

            {  

                if (v === r.get(this.displayField))   

                {  

                    va.push(r.get(this.valueField));  

                }  

            }, this);  

        }, this);  

        this.setValue(va.join(this.separator));  

        this.store.clearFilter();  

    },  

    onSelect: function (record, index)   

    {  

        if (this.fireEvent('beforeselect', this, record, index) !== false)   

        {  

            record.set(this.checkField, !record.get(this.checkField));  

   

            if (this.store.isFiltered())   

            {  

                this.doQuery(this.allQuery);  

            }  

   

            if (this.multi)   

            {  

                if (record.get("key") == "---" && record.get(this.checkField))   

                {  

                    this.setValue("---");  

                }  

                else   

                {  

                    this.setValue(this.getCheckedValue());  

                }  

            }  

            else   

            {  

                this.clearValue();  

                this.value = record.get(this.valueField);  

                this.setRawValue(record.get(this.displayField));  

                this.list.hide();  

            }  

   

            this.fireEvent('select', this, record, index);  

        }  

    },  

    setValue: function (v)   

    {  

        if (v)   

        {  

            v = '' + v;  

            if (this.valueField)   

            {  

                this.store.clearFilter();  

                this.store.each(function (r)   

                {  

                    var checked = !(!v.match('(^|' + this.separator + ')'  

                                + RegExp.escape(r.get(this.valueField))  

                                + '(' + this.separator + '|$)'));  

                    r.set(this.checkField, checked);  

                }, this);  

                this.value = this.getCheckedValue();  

                this.setRawValue(this.getCheckedDisplay());  

                if (this.hiddenField)   

                {  

                    this.hiddenField.value = this.value;  

                }  

            }  

            else   

            {  

                this.value = v;  

                this.setRawValue(v);  

                if (this.hiddenField)   

                {  

                    this.hiddenField.value = v;  

                }  

            }  

            if (this.el)   

            {  

                this.el.removeClass(this.emptyClass);  

            }  

        }  

        else   

        {  

            this.clearValue();  

        }  

    },  

    selectAll: function ()   

    {  

        this.store.each(function (record)   

        {  

            record.set(this.checkField, true);  

        }, this);  

        this.doQuery(this.allQuery);  

        this.setValue(this.getCheckedValue());  

    },  

    deselectAll: function ()   

    {  

        this.clearValue();  

    }  

});  

Ext.reg('multiSelect', Ext.form.MultiSelect);

 

 

 

3、实例

　　var     productStore=new Ext.data.Store(  

     {  

            proxy: new Ext.data.HttpProxy(  

            {  

                    url:'/XXXX/JSON/GetSimpleProductInfo.aspx'  

            }),  

            //读取Json  

            reader: new Ext.data.JsonReader(  

            { totalProperty: "totalCount", root: "root" },   

            [  

                    {name:'ProductId',type:'int'},  

                    {name:'ProductName',type:'string'}  

            ])  

    });  

       

    var productCbox = new Ext.form.MultiSelect(  

    {  

            fieldLabel: '商品',  

            labelStyle: 'width:80px',  

            width: 150,  

            editable: false,  

            id: 'productDS',  

            hiddenName:'productIdDS',  

            store: productStore,  

            emptyText: '--请选择--',  

            allowBlank: false,   

            blankText: '请选择',   

            mode:'remote',  

            displayField: 'UserName',  

            valueField: 'UserId',  

            triggerAction: 'all',  

            selectOnFocus: true,  

            listWidth: 200  

    });  

       

    productStore.on('load', function ()   

    {  

            productCbox.selectAll(); //全选  

    }); 

     

    productStore.load();

 

4、传到后台DepartUserDS的值为

     逗号隔开选项值    如1,2,3

 

 

参考https://zhidao.baidu.com/question/1882911866640949308.html

https://www.cnblogs.com/meetrice/articles/1206339.html