Issue for listGrid with many columns

[ESherbakova]

Hi,

We have a performance issue for ListGrid with many columns when "fixedRecordHeights" is false: the mouse over and mouse click actions on records are very slow. If "fixedRecordHeights" is true, these actions perform well. Is there any way we can handle this issue?

This can be reproduced on SmartClient_v83p_2014-10-18_PowerEdition on any browser.

Please try the following standalone.

Thanks!

var num = 131,	
	ds = new Array(),	
	name = "name";
	
for (var i=0 ; i< num; i++) {
	var dsObj = {};
	dsObj[name] = 'pk'+i;
	dsObj['type'] = 'text';
	dsObj['title'] = 'PK'+i;
	ds[i] = dsObj;
}

var rawData = new Array();

for (var i =0; i<num; i++) {
	var dataObj ={};
	for (var j=0; j<num; j++) {	
		var key = 'pk'+ j;
		dataObj[key] = 'Raw Data '+j;
	}
	rawData[i] = dataObj;
}


var fieldData = new Array();

for (var i=0; i<num; i++) {
	var fieldObj = {};
	fieldObj['name'] = 'pk'+i;
	fieldObj['width'] = 100;
	fieldData[i] = fieldObj;
}
		
isc.DataSource.create({
    ID:"orderItemLocal2",
    clientOnly:true,
    testData:rawData,
    fields:ds
});
		
isc.ListGrid.create({
    ID: "companyList",
	top: 50,
	left:100,
    width:800, height: 500,
    autoFetchData:true,
    dataSource:orderItemLocal2,
    fields:fieldData,
	fixedRecordHeights:false,
	headerHeight:45
});