版权声明：本文为博主原创文章，未经博主允许不得转载。 https://blog.csdn.net/qq_37279783/article/details/88019873
css1：
/** vim: ts=4:sw=4:nu:fdc=4:nospell
*
* Ext.ux.form.LovCombo CSS File
*
* @author Ing.Jozef Sakáloš
* @copyright (c) 2008, by Ing. Jozef Sakáloš
* @date 5. April 2008
* @version $Id: Ext.ux.form.LovCombo.css,v 1.1 2010/05/12 10:43:51 ycliu Exp $
*
* @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(../images/checked.gif);
}
.ux-lovcombo-icon-unchecked {
background: transparent url(../images/unchecked.gif);
}
.checked{
background-image:url(../images/checked.gif)
}
.unchecked{
background-image:url(../images/unchecked.gif)
}
/* eof */
css2：
/** vim: ts=4:sw=4:nu:fdc=4:nospell
*
* Ext.ux.form.LovCombo Example Application CSS File
*
* @author Ing.Jozef Sakáloš
* @copyright (c) 2008, by Ing. Jozef Sakáloš
* @date 16. April 2008
* @version $Id: lovcombo.css,v 1.1 2010/05/12 10:43:51 ycliu Exp $
*
* @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
*/
#west-content a {
text-decoration:none;
}
#west-content a:hover {
text-decoration:underline;
}
#west {
width:280px;
}
#center {
width:640px;
}
#adsense-top {
margin: 10px 0 10px 0;
}
#west-content {
font-family:arial, sans-serif;
}
#center-content {
font-family:arial, sans-serif;
margin:0 0 0 10px;
color:#777777;
}
#center-content h2 {
font-size:16px;
text-align:center;
}
#description {
color:#777777;
text-align:justify;
}
#description em {
font-style:italic;
font-weight:bold;
}
#description p {
margin: 2px 0 8px 0;
}
.adsense {
opacity:.55;
filter:alpha(opacity=55);
-moz-opacity:.55;
}
#change-log {
padding:20px 0 0 20px;
}
#change-log ul {
margin: 8px 0 0 1em;
list-style:disc outside;
text-align:justify;
}
#cts {
margin: 20px;
zoom:1;
}
/* eof */
js：
// vim: ts=4:sw=4:nu:fdc=4:nospell
/**
* Ext.ux.form.LovCombo, List of Values Combo
*
* @author Ing. Jozef Sak谩lo拧
* @copyright (c) 2008, by Ing. Jozef Sak谩lo拧
* @date 16. April 2008
* @version $Id: Ext.ux.form.LovCombo.js,v 1.1 2010/05/12 10:43:43 ycliu Exp $
*
* @license Ext.ux.form.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
*/
/*global Ext */
// add RegExp.escape if it has not been already added
var subCount = 10;//下拉框最大选择数
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
//alert(record);
//alert(this.getCheckedValue());
var subf = this.getCheckedValue().split(",");
//alert(subf.length);
if(subf.length>subCount){
// alert("最多只能选10个子项!");
Ext.Msg.alert("警告","最多只能选10个子项!");
this.setValue(subf.slice(0,10));
}else{
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