Boîte déroulante multi-sélection Extjs (MultiSelect)

Extjs Multi Select Drop Down Box



Développez la bibliothèque de classes js, créez un fichier js dans le projet, nommé: xxx.js Le code est:





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 = '' + ' ' + ' + Ext.BLANK_IMAGE_URL + '' ' + 'class='ux-MultiSelect-icon ux-MultiSelect-icon-' + '{[values.' + this.checkField + '?'checked':'unchecked'' + ']}'>' + '{[values.' + this.displayField + ']}' + ' ' + '' } 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) 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)

À la fin du fichier ext-all.css, ajoutez le style css



.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) }
/ / Get a list of department staff var DepartUserStore=new Ext.data.Store( { proxy: new Ext.data.HttpProxy( { url:'/Web/Manage/DeskTop/JSON/ScheduleManager/GetSimpleDepartUserInfo.aspx' }), / / Read Json reader: new Ext.data.JsonReader( { totalProperty: 'totalCount', root: 'root' }, [ {name:'UserId',type:'int'}, {name:'UserName',type:'string'} ]) }) var DepartUserCbox = new Ext.form.MultiSelect( { fieldLabel: 'Name', labelStyle: 'width:80px', width: 150, editable: false, id: 'DepartUserDS', hiddenName:'DepartUserIdDS', store: DepartUserStore, emptyText: '--please choose--', allowBlank: false, blankText: 'please choose', mode:'remote', displayField: 'UserName', valueField: 'UserId', triggerAction: 'all', selectOnFocus: true, listWidth: 200 }) DepartUserStore.on('load', function () { DepartUserCbox.selectAll() //select all })
DepartUserStore.load()