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发表时间:2009-03-01
最后修改:2009-03-04
Ext扩展组件介绍之二--Ext.ux.form.LovCombo多选下拉框
KimmKing 2009年3月1日4:46:52 前天发了一个绘图组件Ext.Drawing.Surface绘图组件(vml/svg),结果无人响应,今天就找个我常用的ux组件给大家分享。
鉴于2楼说没介绍什么,我就简单介绍下吧~ Ext.ux.form.LovCombo继承自Ext.form.ComboBox,重写了其下拉列表的模板,添加了复选框。 修改了取值和赋值,将用户选中的各个项的值用逗号串成字符串。 将用户传入的字符串按逗号分割成各个值,再在组件渲染时,选中其前面的多选框。 其他用法和ComboBox一致。
-- 找到了链接了,累死我了~~
Ext.ux.form.LovCombo.js // add RegExp.escape if it has not been already added if('function' !== typeof RegExp.escape) { RegExp.escape = function(s) { if('string' !== typeof s) { return s; } // Note: if pasting from forum, precede ]/\ with backslash manually return s.replace(/([.*+?^=!:${}()|[\]\/\\])/g, '\\$1'); }; // eo function escape } // create namespace Ext.ns('Ext.ux.form'); /** * * @class Ext.ux.form.LovCombo * @extends Ext.form.ComboBox */ Ext.ux.form.LovCombo = Ext.extend(Ext.form.ComboBox, { // {{{ // configuration options /** * @cfg {String} checkField name of field used to store checked state. * It is automatically added to existing fields. * Change it only if it collides with your normal field. */ checkField:'checked' /** * @cfg {String} separator separator to use between values and texts */ ,separator:',' /** * @cfg {String/Array} tpl Template for items. * Change it only if you know what you are doing. */ // }}} // {{{ ,initComponent:function() { // template with checkbox if(!this.tpl) { this.tpl = '<tpl for=".">' +'<div class="x-combo-list-item">' +'<img src="' + Ext.BLANK_IMAGE_URL + '" ' +'class="ux-lovcombo-icon ux-lovcombo-icon-' +'{[values.' + this.checkField + '?"checked":"unchecked"' + ']}">' +'<div class="ux-lovcombo-item-text">{' + (this.displayField || 'text' )+ '}</div>' +'</div>' +'</tpl>' ; } // call parent Ext.ux.form.LovCombo.superclass.initComponent.apply(this, arguments); // install internal event handlers this.on({ scope:this ,beforequery:this.onBeforeQuery ,blur:this.onRealBlur }); // remove selection from input field this.onLoad = this.onLoad.createSequence(function() { if(this.el) { var v = this.el.dom.value; this.el.dom.value = ''; this.el.dom.value = v; } }); } // e/o function initComponent // }}} // {{{ /** * Disables default tab key bahavior * @private */ ,initEvents:function() { Ext.ux.form.LovCombo.superclass.initEvents.apply(this, arguments); // disable default tab handling - does no good this.keyNav.tab = false; } // eo function initEvents // }}} // {{{ /** * clears value */ ,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(); } // eo function clearValue // }}} // {{{ /** * @return {String} separator (plus space) separated list of selected displayFields * @private */ ,getCheckedDisplay:function() { var re = new RegExp(this.separator, "g"); return this.getCheckedValue(this.displayField).replace(re, this.separator + ' '); } // eo function getCheckedDisplay // }}} // {{{ /** * @return {String} separator separated list of selected valueFields * @private */ ,getCheckedValue:function(field) { field = field || this.valueField; var c = []; // store may be filtered so get all records 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); } // eo function getCheckedValue // }}} // {{{ /** * beforequery event handler - handles multiple selections * @param {Object} qe query event * @private */ ,onBeforeQuery:function(qe) { qe.query = qe.query.replace(new RegExp(this.getCheckedDisplay() + '[ ' + this.separator + ']*'), ''); } // eo function onBeforeQuery // }}} // {{{ /** * blur event handler - runs only when real blur event is fired */ ,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; // iterate through raw values and records and check/uncheck items 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(); } // eo function onRealBlur // }}} // {{{ /** * Combo's onSelect override * @private * @param {Ext.data.Record} record record that has been selected in the list * @param {Number} index index of selected (clicked) record */ ,onSelect:function(record, index) { if(this.fireEvent('beforeselect', this, record, index) !== false){ // toggle checked field record.set(this.checkField, !record.get(this.checkField)); // display full list if(this.store.isFiltered()) { this.doQuery(this.allQuery); } // set (update) value and fire event this.setValue(this.getCheckedValue()); this.fireEvent('select', this, record, index); } } // eo function onSelect // }}} // {{{ /** * Sets the value of the LovCombo * @param {Mixed} v value */ ,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(); } } // eo function setValue // }}} // {{{ /** * Selects all items */ ,selectAll:function() { this.store.each(function(record){ // toggle checked field record.set(this.checkField, true); }, this); //display full list this.doQuery(this.allQuery); this.setValue(this.getCheckedValue()); } // eo full selectAll // }}} // {{{ /** * Deselects all items. Synonym for clearValue */ ,deselectAll:function() { this.clearValue(); } // eo full deselectAll // }}} }); // eo extend // register xtype Ext.reg('lovcombo', Ext.ux.form.LovCombo); // eof
// vim: ts=4:sw=4:nu:fdc=4:nospell /** * Ext.ux.form.RowActions Plugin Example Application * * @author Ing. Jozef Sakáloš * @date 22. March 2008 * @version $Id: lovcombo.js 78 2008-06-06 09:22:10Z jozo $ * * @license lovcombo.js is licensed under the terms of * the Open Source LGPL 3.0 license. Commercial use is permitted to the extent * that the code/component(s) do NOT become part of another Open Source or Commercially * licensed development library or toolkit without explicit permission. * * License details: http://www.gnu.org/licenses/lgpl.html */ var lc = new Ext.ux.form.LovCombo({ id:'lovcombo' ,renderTo:'lovcomboct' ,width:300 ,hideOnSelect:false ,maxHeight:200 ,readOnly:true ,editable:false ,store:[ [1, 'Personnel []'] ,[11, 'Finance (33)'] ,[5, 'Door'] ,[6, 'Door Panel'] ,[2, 'Management !77'] ,[25, 'Production'] ,[3, 'Users'] ,[20, 'Window'] ,[21, 'Window Panel'] ,[22, 'Form Panel'] ,[23, 'Grid Panel'] ,[24, 'Data View Panel'] ] // ,store:new Ext.data.SimpleStore({ // id:0 // ,fields:[{name:'id',type:'int'}, 'privGroup'] // ,data:[ // [1, 'Personnel'] // ,[11, 'Finance'] // ,[2, 'Management'] // ,[22, 'Production'] // ,[3, 'Users'] // ] // }) ,triggerAction:'all' // ,valueField:'id' // ,displayField:'privGroup' ,mode:'local' }); var tf = new Ext.form.TextField({ renderTo:'textct' ,id:'tf' ,width:300 ,selectOnFocus:false ,listeners:{ focus:function() {this.setValue(lc.getValue());} } });
/** vim: ts=4:sw=4:nu:fdc=4:nospell * * Ext.ux.form.LovCombo CSS File * * @author Ing.Jozef Sak谩lo拧 * @copyright (c) 2008, by Ing. Jozef Sak谩lo拧 * @date 5. April 2008 * @version $Id: Ext.ux.form.LovCombo.css 189 2008-04-16 21:01:06Z jozo $ * * @license Ext.ux.form.LovCombo.css is licensed under the terms of the Open Source * LGPL 3.0 license. Commercial use is permitted to the extent that the * code/component(s) do NOT become part of another Open Source or Commercially * licensed development library or toolkit without explicit permission. * * License details: http://www.gnu.org/licenses/lgpl.html */ .ux-lovcombo-icon { width:16px; height:16px; float:left; background-position: -1px -1px ! important; background-repeat:no-repeat ! important; } .ux-lovcombo-icon-checked { background: transparent url(../ext/resources/images/default/menu/checked.gif); } .ux-lovcombo-icon-unchecked { background: transparent url(../ext/resources/images/default/menu/unchecked.gif); } /* eof */
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发表时间:2009-03-04
挺好用 不过你介绍什么了啊 给个链接就得了
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发表时间:2009-03-04
xiaoyuerbaby 写道 挺好用 不过你介绍什么了啊 给个链接就得了 半年前存的东西,项目里用了, 原始链接找不到了~~ 不然就帖出来了~ |
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发表时间:2009-04-29
这个东东是不错,不过有个BUG:如果下拉列表中有名字重复的选项,你在列表中选中一个的时候,它把所有的都选中了,之前用的是这样,不知最新版本的改了没有
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发表时间:2009-04-29
soaring 写道 这个东东是不错,不过有个BUG:如果下拉列表中有名字重复的选项,你在列表中选中一个的时候,它把所有的都选中了,之前用的是这样,不知最新版本的改了没有 确实有bug,我看看能改不~~ |
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发表时间:2009-04-29
kimmking 写道 soaring 写道 这个东东是不错,不过有个BUG:如果下拉列表中有名字重复的选项,你在列表中选中一个的时候,它把所有的都选中了,之前用的是这样,不知最新版本的改了没有
确实有bug,我看看能改不~~ 修改了,我还是新起一个帖吧~ |
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发表时间:2009-05-27
form.getForm().load({
url : '/Service/Ajax/JsonData.aspx?act=getSingleNews', params:{id:id} }) JsonReader为: {successProperty : 'success',root: 'data' }, [ {name: 'id',type:'int'}, {name: 'title',type:'string'}, {name: 'state',type:'int'}, {name: 'content',type:'string'} ] 其中state就是要绑定的组件, 当"/Service/Ajax/JsonData.aspx?act=getSingleNews"返回的数据为: {success:true,data:[{id:90,title:'this is a title',state:1,content:'this is a test'}]} 可以顺利通过绑定. 当返回的数据为{success:true,data:[{id:90,title:'this is a title',state:[1,2],content:'this is a test'}]} 则无法绑定(value为数组). 这是为什么呢? 而我通过 form.getForm().setValues({id:90,title:'this is a title',state:[1,2],content:'this is a test'}); 也能顺利绑定.为什么呢?真是想不通 |
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