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Ext4.2's Ext.grid.plugin.RowExpander cannot trigger event solution_extjs

WBOY
WBOYOriginal
2016-05-16 16:39:401415browse

Ext4.2 Ext.grid.plugin.RowExpander has a bug. The added collapsebody and expandbody cannot be triggered. I checked the source code corresponding to Ext.grid.plugin.RowExpander and found that collapsebody and expandbody events were not added. Even according to the online Methods that override the init and toggleRow methods of Ext.grid.plugin.RowExpander cannot trigger collapsebody and expandbody events.

Solution: Add collapsebody and expandbody events to the grid object, then configure these two events for the grid, and at the same time rewrite the toggleRow method of Ext.grid.plugin.RowExpander to trigger the two events added to the grid.

The test source code is as follows:

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<title>Ext4.2+ Ext.grid.plugin.RowExpander无法触发collapsebody，expandbody事件解决办法</title>
<link rel="stylesheet" type="text/css" href="../../resources/css/ext-all.css" rel="external nofollow" />
<script type="text/javascript" src="../../ext-all-debug.js"> </script>
<script>
Ext.override(Ext.grid.plugin.RowExpander, { // Override to fire collapsebody & expandbody
 init: function(grid) {
  this.callParent(arguments);
//  grid.getView().addEvents('collapsebody', 'expandbody');//ext论坛找到的解决办法，这样也无法添加事件
//存储grid对象
this.grid=grid
  this.grid.addEvents('collapsebody', 'expandbody');//给grid对象添加事件
 },
 toggleRow: function(rowIdx, record) {
  var me = this,
   view = me.view,
   rowNode = view.getNode(rowIdx),
   row = Ext.fly(rowNode, '_rowExpander'),
   nextBd = row.down(me.rowBodyTrSelector, true),
   isCollapsed = row.hasCls(me.rowCollapsedCls),
   addOrRemoveCls = isCollapsed &#63; 'removeCls' : 'addCls',
   ownerLock, rowHeight, fireView;
 
 
  // Suspend layouts because of possible TWO views having their height change
  Ext.suspendLayouts();
  row[addOrRemoveCls](me.rowCollapsedCls);
  Ext.fly(nextBd)[addOrRemoveCls](me.rowBodyHiddenCls);
  me.recordsExpanded[record.internalId] = isCollapsed;
  view.refreshSize();
 
 
  // Sync the height and class of the row on the locked side
  if (me.grid.ownerLockable) {
   ownerLock = me.grid.ownerLockable;
//   fireView = ownerLock.getView();
   view = ownerLock.lockedGrid.view;
   fireView=ownerLock.lockedGrid.view;
   rowHeight = row.getHeight();
   // EXTJSIV-9848: in Firefox the offsetHeight of a row may not match
   // it is actual rendered height due to sub-pixel rounding errors. To ensure
   // the rows heights on both sides of the grid are the same, we have to set
   // them both.
   row.setHeight(isCollapsed &#63; rowHeight : '');
   row = Ext.fly(view.getNode(rowIdx), '_rowExpander');
   row.setHeight(isCollapsed &#63; rowHeight : '');
   row[addOrRemoveCls](me.rowCollapsedCls);
   view.refreshSize();
  } else {
   fireView = view;
  }
//通过grid触发事件，而不是view
this.grid.fireEvent(isCollapsed &#63; 'expandbody' : 'collapsebody', row.dom, record, nextBd);
//下面为ext论坛的解决办法，无效
//fireView.fireEvent(isCollapsed &#63; 'expandbody' : 'collapsebody', row.dom, record, nextBd);
  // Coalesce laying out due to view size changes
  Ext.resumeLayouts(true);
 },
});
//Ext.loader.setConfig({enabled:true});
Ext.onReady(function() {
 Ext.QuickTips.init();
 var store = new Ext.data.Store({
   
  fields:[
   {name:'fileName',type:'string'},
   {name:'room',type:'string'},
   {name:'recordDate',type:'string'},
   
  ],
  data:[
   {fileName:'文件1',room:'会议室1',recordDate:'2014-07-03'},
   {fileName:'文件2',room:'会议室2',recordDate:'2014-07-03'},
   {fileName:'文件3',room:'会议室3',recordDate:'2014-07-03'}
  ],
  autoLoad:true
 });
 var expander = new Ext.grid.plugin.RowExpander({
  rowBodyTpl:new Ext.XTemplate('<div class="detailData">pp</div>'),
  listeners:{
   expandbody:function(){//无法触发这个是事件
    console.log('Ext.grid.plugin.RowExpander');
   }
  }
 });
  Ext.create('Ext.grid.Panel',{
  xtype: 'row-expander-grid',
  store: store,
  listeners:{
   expandbody:function(){//OK，可以触发
    console.log('fired from grid');
   }
  },
  renderTo:Ext.getBody(),
  columns: [
   {text: "文件名称", flex: 1, dataIndex: 'fileName'},
   {text: "会议室", dataIndex: 'room'},
   {text: "录制日期", renderer: Ext.util.Format.dateRenderer('Y-m-d'), dataIndex: 'recordDate'}
  ],
  width: 600,
  height: 300,
  plugins:expander,
  collapsible: true,
  animCollapse: false,
  title: 'Expander Rows in a Collapsible Grid',
  iconCls: 'icon-grid'
 });
});
</script>
</head>
<body id="docbody">
</body>
</html>

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