SelectBox.js
资源名称:ext-3.1.0.zip [点击查看]
上传用户:dawnssy
上传日期:2022-08-06
资源大小:9345k
文件大小:6k
源码类别:
JavaScript
开发平台:
JavaScript
- /*! * Ext JS Library 3.1.0 * Copyright(c) 2006-2009 Ext JS, LLC * licensing@extjs.com * http://www.extjs.com/license */ Ext.ns('Ext.ux.form');
- /**
- * @class Ext.ux.form.SelectBox
- * @extends Ext.form.ComboBox
- * <p>Makes a ComboBox more closely mimic an HTML SELECT. Supports clicking and dragging
- * through the list, with item selection occurring when the mouse button is released.
- * When used will automatically set {@link #editable} to false and call {@link Ext.Element#unselectable}
- * on inner elements. Re-enabling editable after calling this will NOT work.</p>
- * @author Corey Gilmore http://extjs.com/forum/showthread.php?t=6392
- * @history 2007-07-08 jvs
- * Slight mods for Ext 2.0
- * @xtype selectbox
- */
- Ext.ux.form.SelectBox = Ext.extend(Ext.form.ComboBox, {
- constructor: function(config){
- this.searchResetDelay = 1000;
- config = config || {};
- config = Ext.apply(config || {}, {
- editable: false,
- forceSelection: true,
- rowHeight: false,
- lastSearchTerm: false,
- triggerAction: 'all',
- mode: 'local'
- });
- Ext.ux.form.SelectBox.superclass.constructor.apply(this, arguments);
- this.lastSelectedIndex = this.selectedIndex || 0;
- },
- initEvents : function(){
- Ext.ux.form.SelectBox.superclass.initEvents.apply(this, arguments);
- // you need to use keypress to capture upper/lower case and shift+key, but it doesn't work in IE
- this.el.on('keydown', this.keySearch, this, true);
- this.cshTask = new Ext.util.DelayedTask(this.clearSearchHistory, this);
- },
- keySearch : function(e, target, options) {
- var raw = e.getKey();
- var key = String.fromCharCode(raw);
- var startIndex = 0;
- if( !this.store.getCount() ) {
- return;
- }
- switch(raw) {
- case Ext.EventObject.HOME:
- e.stopEvent();
- this.selectFirst();
- return;
- case Ext.EventObject.END:
- e.stopEvent();
- this.selectLast();
- return;
- case Ext.EventObject.PAGEDOWN:
- this.selectNextPage();
- e.stopEvent();
- return;
- case Ext.EventObject.PAGEUP:
- this.selectPrevPage();
- e.stopEvent();
- return;
- }
- // skip special keys other than the shift key
- if( (e.hasModifier() && !e.shiftKey) || e.isNavKeyPress() || e.isSpecialKey() ) {
- return;
- }
- if( this.lastSearchTerm == key ) {
- startIndex = this.lastSelectedIndex;
- }
- this.search(this.displayField, key, startIndex);
- this.cshTask.delay(this.searchResetDelay);
- },
- onRender : function(ct, position) {
- this.store.on('load', this.calcRowsPerPage, this);
- Ext.ux.form.SelectBox.superclass.onRender.apply(this, arguments);
- if( this.mode == 'local' ) {
- this.initList();
- this.calcRowsPerPage();
- }
- },
- onSelect : function(record, index, skipCollapse){
- if(this.fireEvent('beforeselect', this, record, index) !== false){
- this.setValue(record.data[this.valueField || this.displayField]);
- if( !skipCollapse ) {
- this.collapse();
- }
- this.lastSelectedIndex = index + 1;
- this.fireEvent('select', this, record, index);
- }
- },
- afterRender : function() {
- Ext.ux.form.SelectBox.superclass.afterRender.apply(this, arguments);
- if(Ext.isWebKit) {
- this.el.swallowEvent('mousedown', true);
- }
- this.el.unselectable();
- this.innerList.unselectable();
- this.trigger.unselectable();
- this.innerList.on('mouseup', function(e, target, options) {
- if( target.id && target.id == this.innerList.id ) {
- return;
- }
- this.onViewClick();
- }, this);
- this.innerList.on('mouseover', function(e, target, options) {
- if( target.id && target.id == this.innerList.id ) {
- return;
- }
- this.lastSelectedIndex = this.view.getSelectedIndexes()[0] + 1;
- this.cshTask.delay(this.searchResetDelay);
- }, this);
- this.trigger.un('click', this.onTriggerClick, this);
- this.trigger.on('mousedown', function(e, target, options) {
- e.preventDefault();
- this.onTriggerClick();
- }, this);
- this.on('collapse', function(e, target, options) {
- Ext.getDoc().un('mouseup', this.collapseIf, this);
- }, this, true);
- this.on('expand', function(e, target, options) {
- Ext.getDoc().on('mouseup', this.collapseIf, this);
- }, this, true);
- },
- clearSearchHistory : function() {
- this.lastSelectedIndex = 0;
- this.lastSearchTerm = false;
- },
- selectFirst : function() {
- this.focusAndSelect(this.store.data.first());
- },
- selectLast : function() {
- this.focusAndSelect(this.store.data.last());
- },
- selectPrevPage : function() {
- if( !this.rowHeight ) {
- return;
- }
- var index = Math.max(this.selectedIndex-this.rowsPerPage, 0);
- this.focusAndSelect(this.store.getAt(index));
- },
- selectNextPage : function() {
- if( !this.rowHeight ) {
- return;
- }
- var index = Math.min(this.selectedIndex+this.rowsPerPage, this.store.getCount() - 1);
- this.focusAndSelect(this.store.getAt(index));
- },
- search : function(field, value, startIndex) {
- field = field || this.displayField;
- this.lastSearchTerm = value;
- var index = this.store.find.apply(this.store, arguments);
- if( index !== -1 ) {
- this.focusAndSelect(index);
- }
- },
- focusAndSelect : function(record) {
- var index = Ext.isNumber(record) ? record : this.store.indexOf(record);
- this.select(index, this.isExpanded());
- this.onSelect(this.store.getAt(index), index, this.isExpanded());
- },
- calcRowsPerPage : function() {
- if( this.store.getCount() ) {
- this.rowHeight = Ext.fly(this.view.getNode(0)).getHeight();
- this.rowsPerPage = this.maxHeight / this.rowHeight;
- } else {
- this.rowHeight = false;
- }
- }
- });
- Ext.reg('selectbox', Ext.ux.form.SelectBox);
- //backwards compat
- Ext.ux.SelectBox = Ext.ux.form.SelectBox;