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
