Hi All:
I've encountered an intermittant stack overflow problem displaying data
in an <mx:DataGrid> with two colunms, variableRowHeight="true", and a
custom itemRenderer applied to the second column. The item renderer for
the second column is based on <mx:Box> and has two view states. The
renderer is either in the "default" state and shows wrapped text, or in
a "link" state and the text is a hyperlink where an <mx:Button> to be
displayed instead.
My interface combines an <mx:Tree> beside an <mx:DataGrid> in a simple
master/detail configuration. Selecting an item in the tree resets the
grid dataProvider to show detailed data in the grid for the
corresponding tree item. The MXML for the interface is:
<mx:DividedBox id="resultsBox" width="100%" height="100%"
direction="horizontal">
<mx:Tree id="resultTree" width="37%" height="100%" minWidth="100"
styleName="layerTreeStyle"
doubleClickEnabled="true"
dataProvider="{ viewModel.results }"/>
<mx:DataGrid id="attrGrid"
width="63%"
minWidth="125"
height="100%"
variableRowHeight="true"
draggableColumns="false"
sortableColumns="false"
editable="false">
<mx:columns>
<mx:DataGridColumn headerText="Field" dataField="field"
width="100"/>
<mx:DataGridColumn headerText="Value" dataField="value"
width="125"
itemRenderer="views.renderers.ResultSummaryValueRenderer"/>
</mx:columns>
</mx:DataGrid>
</mx:DividedBox>
The itemRenderer looks like this:
<?xml version="1.0" encoding="utf-8"?>
<mx:Box xmlns:fx="http://ns.adobe.com/mxml/2009"
xmlns:mx="library://ns.adobe.com/flex/mx"
implements="mx.core.IDataRenderer"
width="100%"
paddingLeft="5">
<fx:Script>
<![CDATA[
import events.ResultLinkEvent;
import mx.events.FlexEvent;
import util.StringUtil;
private const linkMethodPat:RegExp = /(ht|f)tp(s?):/i;
private var _data:Object;
[Bindable]
private var displayVal:String = null;
[Bindable]
private var displayTip:String = null;
[Bindable("dataChange")]
public override function get data():Object {
return _data;
public override function set data(value:Object):void {
if ((this._data = value) != null) {
if (isLink(value)) {
var valStr:String = data.value as String;
var sepIndex:int = valStr.indexOf("|");
this.displayVal = (sepIndex >= 0) ?
valStr.substring(0, sepIndex) : "Link";
this.displayTip = valStr.substring(sepIndex + 1);
this.currentState = "link";
return;
this.displayVal = ("value" in data &
StringUtil.isNotBlank(data.value)) ? data.value : "[ no value ]";
this.displayTip = null;
this.currentState = "default";
dispatchEvent(new FlexEvent(FlexEvent.DATA_CHANGE));
private function isLink(attrInfo:Object):Boolean {
var sepIndex:int = attrInfo.value.indexOf("|");
var attrVal:String = (sepIndex == -1) ? attrInfo.value
: String(attrInfo.value).substring(sepIndex);
// return true if value is URL with recognized method
return (attrVal.substring(0,
attrVal.indexOf('//')).match(linkMethodPat) != null);
private function notifyLink(evt:MouseEvent):void {
var attrVal:String = data.value as String;
var sepIndex:int = attrVal.indexOf("|");
dispatchEvent(new ResultLinkEvent(
ResultLinkEvent.NAVIGATE,
data.field,
(sepIndex == -1) ? attrVal :
attrVal.substring(sepIndex + 1)
);
]]>
</fx:Script>
<mx:states>
<mx:State name="default"/>
<mx:State name="link"/>
</mx:states>
<mx:Text id="attrTextCtrl" width="100%"
text="{ displayVal }" selectable="true" excludeFrom="link"/>
<mx:Button id="attrButtonCtrl" label="{ displayVal }" toolTip="{
displayTip }"
click="notifyLink(event)" includeIn="link"/>
</mx:Box>
THE PROBLEM:
At first, when the tree selection changes the grid updates correctly
with new grid content and content is displayed in the second column as
either wrapped text or button as desired. But after an indeterminate
number of tree selection changes the player will freeze and result in
layout-related stack overflow of some kind.
The grid dataProvider always has about 6-12 rows, but the content itself
varies somewhat in how many of those rows have text long enough to wrap
in the grid when tree selection changes. There is nearly always more
content than can be displayed vertically so the grid has to display a
scroll bar.
I wrote that the stack overflow is intermittant because it /seems/ that
if the grid content can be displayed completely without need for a
scroll bar then the problem does not occur. This is often the case when
there is only one row requiring text wrapping in the itemRenderer.
Anyway, stack traces I have (see below) indicate some kind of loop that
occurs attempting to validate and update the display lists of the grid
and the item renderer used until stack is exhausted. Seems like a bug.
Things I've tried to workaround the problem:
1. setting horizontalScrollPolicy="off" verticalScrollPolicy="off"
inside item renderer -> no effect, problem persists
2. basing itemRenderer on <s:MXDataGridItemRenderer/> with no layout
instead of <mx:Box/> -> problem persists
3. basing itemRenderer on <s:MXDataGridItemRenderer/> with
<s:HorizontalLayout/> instead of <mx:Box/> -> problem persists
4. setting variableRowHeight="false" on grid -> problem eliminated, but
long text is not wrapped (undesired visual outcome)
5. removing itemRenderer on second column -> problem eliminated, but is
effectively equivalent to variableRowHeight="false" because default
DataGridItemRenderer class never wraps text (undesired visual outcome).
6. Using a bare minimum itemRenderer based on <mx:Box/> involving only
<mx:Text> for wrapped text and no view states -> problem eliminated, but
its not possible to display a button when content is a hyperlink.
7. Using an itemRenderer based on <mx:Box/> that avoids view states
altogether and tries to toggle which control is visible through setting
of visible and includeInLayout -> seemed better at first, but problem
persists
8. I also tried to extend DataGridColumn to conditionally use two
different itemRenderers based on the data, but
DataGridColumn.getItemRendererFactory() calls private methods I can't
override without bringing the whole class into my tree.
QUESTIONS:
1. Is there another way to write an item renderer with switching view
states in a way that is more robust?
2. How does <mx:DataGrid> compute the needed height for a row? Can I
break the chain somehow by implementing measure() or something?
Any help or suggestions would be greatly appreciated!!!
Jason
P.S. STACK TRACES:
itemRenderer based on mx:Box --
undefined
at
mx.core::LayoutElementUIComponentUtils$/getPreferredUBoundsHeight()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/framework/src/mx/core/LayoutElementUIComponentUtils.as:92]
at
mx.core::LayoutElementUIComponentUtils$/setLayoutBoundsSize()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/framework/src/mx/core/LayoutElementUIComponentUtils.as:510]
at
mx.core::UIComponent/setLayoutBoundsSize()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/framework/src/mx/core/UIComponent.as:14474]
at
spark.layouts::BasicLayout/updateDisplayList()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/spark/src/spark/layouts/BasicLayout.as:508]
at
spark.components.supportClasses::GroupBase/updateDisplayList()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/spark/src/spark/components/supportClasses/GroupBase.as:1302]
at
spark.components::Group/updateDisplayList()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/spark/src/spark/components/Group.as:1179]
at
mx.core::UIComponent/validateDisplayList()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/framework/src/mx/core/UIComponent.as:9531]
at
spark.components::Group/validateDisplayList()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/spark/src/spark/components/Group.as:1101]
at
mx.managers::LayoutManager/validateClient()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/framework/src/mx/managers/LayoutManager.as:1041]
at
mx.core::UIComponent/validateNow()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/framework/src/mx/core/UIComponent.as:8609]
at
mx.controls.dataGridClasses::DataGridBase/updateRendererDisplayList()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/dataGridClasses/DataGridBase.as:1344]
at
mx.controls.dataGridClasses::DataGridBase/drawItem()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/dataGridClasses/DataGridBase.as:1309]
at
mx.controls.dataGridClasses::DataGridBase/drawVisibleItem()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/dataGridClasses/DataGridBase.as:1282]
at
mx.controls.dataGridClasses::DataGridBase/makeRows()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/dataGridClasses/DataGridBase.as:818]
at
mx.controls.dataGridClasses::DataGridBase/makeRowsAndColumns()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/dataGridClasses/DataGridBase.as:702]
at
mx.controls::DataGrid/makeRowsAndColumns()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/DataGrid.as:1882]
at
mx.controls.listClasses::ListBase/makeRowsAndColumnsWithExtraRows()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/listClasses/ListBase.as:1747]
at
mx.controls.listClasses::ListBase/updateDisplayList()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/listClasses/ListBase.as:4388]
at
mx.controls.dataGridClasses::DataGridBase/updateDisplayList()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/dataGridClasses/DataGridBase.as:690]
at
mx.controls::DataGrid/updateDisplayList()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/DataGrid.as:1781]
at
mx.core::ScrollControlBase/setScrollBarProperties()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/core/ScrollControlBase.as:1286]
at
mx.controls::DataGrid/configureScrollBars()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/DataGrid.as:2437]
at
mx.controls.listClasses::ListBase/updateDisplayList()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/listClasses/ListBase.as:4402]
at
mx.controls.dataGridClasses::DataGridBase/updateDisplayList()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/dataGridClasses/DataGridBase.as:690]
at
mx.controls::DataGrid/updateDisplayList()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/DataGrid.as:1781]
at
mx.core::ScrollControlBase/setScrollBarProperties()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/core/ScrollControlBase.as:1286]
at
mx.controls::DataGrid/configureScrollBars()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/DataGrid.as:2437]
at
mx.controls.listClasses::ListBase/updateDisplayList()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/listClasses/ListBase.as:4402]
at
mx.controls.dataGridClasses::DataGridBase/updateDisplayList()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/dataGridClasses/DataGridBase.as:690]
at
mx.controls::DataGrid/updateDisplayList()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/DataGrid.as:1781]
at
mx.core::ScrollControlBase/setScrollBarProperties()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/core/ScrollControlBase.as:1286]
at
mx.controls::DataGrid/configureScrollBars()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/DataGrid.as:2437]
at
mx.controls.listClasses::ListBase/updateDisplayList()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/listClasses/ListBase.as:4402]
at
mx.controls.dataGridClasses::DataGridBase/updateDisplayList()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/dataGridClasses/DataGridBase.as:690]
at
mx.controls::DataGrid/updateDisplayList()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/DataGrid.as:1781]
at
mx.core::ScrollControlBase/setScrollBarProperties()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/core/ScrollControlBase.as:1286]
at
mx.controls::DataGrid/configureScrollBars()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/DataGrid.as:2437]
at
mx.controls.listClasses::ListBase/updateDisplayList()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/listClasses/ListBase.as:4402]
at
mx.controls.dataGridClasses::DataGridBase/updateDisplayList()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/dataGridClasses/DataGridBase.as:690]
at
mx.controls::DataGrid/updateDisplayList()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/DataGrid.as:1781]
at
mx.core::ScrollControlBase/setScrollBarProperties()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/core/ScrollControlBase.as:1286]
at
mx.controls::DataGrid/configureScrollBars()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/DataGrid.as:2437]
at
mx.controls.listClasses::ListBase/updateDisplayList()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/listClasses/ListBase.as:4402]
at
mx.controls.dataGridClasses::DataGridBase/updateDisplayList()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/dataGridClasses/DataGridBase.as:690]
at
mx.controls::DataGrid/updateDisplayList()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/DataGrid.as:1781]
at
mx.core::ScrollControlBase/setScrollBarProperties()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/core/ScrollControlBase.as:1286]
at
mx.controls::DataGrid/configureScrollBars()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/DataGrid.as:2437]
at
mx.controls.listClasses::ListBase/updateDisplayList()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/listClasses/ListBase.as:4402]
at
mx.controls.dataGridClasses::DataGridBase/updateDisplayList()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/dataGridClasses/DataGridBase.as:690]
at
mx.controls::DataGrid/updateDisplayList()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/DataGrid.as:1781]
at
mx.core::ScrollControlBase/setScrollBarProperties()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/core/ScrollControlBase.as:1286]
at
mx.controls::DataGrid/configureScrollBars()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/DataGrid.as:2437]
at
mx.controls.listClasses::ListBase/updateDisplayList()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/listClasses/ListBase.as:4402]
at
mx.controls.dataGridClasses::DataGridBase/updateDisplayList()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/dataGridClasses/DataGridBase.as:690]
at
mx.controls::DataGrid/updateDisplayList()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/DataGrid.as:1781]
at
mx.core::ScrollControlBase/setScrollBarProperties()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/core/ScrollControlBase.as:1286]
at
mx.controls::DataGrid/configureScrollBars()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/DataGrid.as:2437]
at
mx.controls.listClasses::ListBase/updateDisplayList()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/listClasses/ListBase.as:4402]
at
mx.controls.dataGridClasses::DataGridBase/updateDisplayList()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/dataGridClasses/DataGridBase.as:690]
at
mx.controls::DataGrid/updateDisplayList()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/DataGrid.as:1781]
at
mx.core::ScrollControlBase/setScrollBarProperties()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/core/ScrollControlBase.as:1286]
at
mx.controls::DataGrid/configureScrollBars()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/DataGrid.as:2437]
at
mx.controls.listClasses::ListBase/updateDisplayList()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/listClasses/ListBase.as:4402]
at
mx.controls.dataGridClasses::DataGridBase/updateDisplayList()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/dataGridClasses/DataGridBase.as:690]
itemRenderer based on s:MXDataGridItemRenderer:
undefined
at
mx.managers::LayoutManager/invalidateDisplayList()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/framework/src/mx/managers/LayoutManager.as:556]
at
mx.core::UIComponent/invalidateDisplayList()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/framework/src/mx/core/UIComponent.as:8433]
at
mx.core::UIComponent/setActualSize()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/framework/src/mx/core/UIComponent.as:10250]
at
mx.core::LayoutElementUIComponentUtils$/setLayoutBoundsSize()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/framework/src/mx/core/LayoutElementUIComponentUtils.as:519]
at
mx.core::UIComponent/setLayoutBoundsSize()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/framework/src/mx/core/UIComponent.as:14474]
at
spark.layouts::BasicLayout/updateDisplayList()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/spark/src/spark/layouts/BasicLayout.as:508]
at
spark.components.supportClasses::GroupBase/updateDisplayList()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/spark/src/spark/components/supportClasses/GroupBase.as:1302]
at
spark.components::Group/updateDisplayList()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/spark/src/spark/components/Group.as:1179]
at
mx.core::UIComponent/validateDisplayList()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/framework/src/mx/core/UIComponent.as:9531]
at
spark.components::Group/validateDisplayList()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/spark/src/spark/components/Group.as:1101]
at
mx.managers::LayoutManager/validateClient()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/framework/src/mx/managers/LayoutManager.as:1041]
at
mx.core::UIComponent/validateNow()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/framework/src/mx/core/UIComponent.as:8609]
at
mx.controls.dataGridClasses::DataGridBase/updateRendererDisplayList()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/dataGridClasses/DataGridBase.as:1344]
at
mx.controls.dataGridClasses::DataGridBase/drawItem()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/dataGridClasses/DataGridBase.as:1309]
at
mx.controls.dataGridClasses::DataGridBase/drawVisibleItem()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/dataGridClasses/DataGridBase.as:1282]
at
mx.controls.dataGridClasses::DataGridBase/makeRows()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/dataGridClasses/DataGridBase.as:818]
at
mx.controls.dataGridClasses::DataGridBase/makeRowsAndColumns()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/dataGridClasses/DataGridBase.as:702]
at
mx.controls::DataGrid/makeRowsAndColumns()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/DataGrid.as:1882]
at
mx.controls.listClasses::ListBase/makeRowsAndColumnsWithExtraRows()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/listClasses/ListBase.as:1747]
at
mx.controls.listClasses::ListBase/updateDisplayList()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/listClasses/ListBase.as:4388]
at
mx.controls.dataGridClasses::DataGridBase/updateDisplayList()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/dataGridClasses/DataGridBase.as:690]
at
mx.controls::DataGrid/updateDisplayList()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/DataGrid.as:1781]
at
mx.core::ScrollControlBase/setScrollBarProperties()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/core/ScrollControlBase.as:1286]
at
mx.controls::DataGrid/configureScrollBars()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/DataGrid.as:2437]
at
mx.controls.listClasses::ListBase/updateDisplayList()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/listClasses/ListBase.as:4402]
at
mx.controls.dataGridClasses::DataGridBase/updateDisplayList()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/dataGridClasses/DataGridBase.as:690]
at
mx.controls::DataGrid/updateDisplayList()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/DataGrid.as:1781]
at
mx.core::ScrollControlBase/setScrollBarProperties()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/core/ScrollControlBase.as:1286]
at
mx.controls::DataGrid/configureScrollBars()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/DataGrid.as:2437]
at
mx.controls.listClasses::ListBase/updateDisplayList()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/listClasses/ListBase.as:4402]
at
mx.controls.dataGridClasses::DataGridBase/updateDisplayList()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/dataGridClasses/DataGridBase.as:690]
at
mx.controls::DataGrid/updateDisplayList()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/DataGrid.as:1781]
at
mx.core::ScrollControlBase/setScrollBarProperties()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/core/ScrollControlBase.as:1286]
at
mx.controls::DataGrid/configureScrollBars()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/DataGrid.as:2437]
at
mx.controls.listClasses::ListBase/updateDisplayList()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/listClasses/ListBase.as:4402]
at
mx.controls.dataGridClasses::DataGridBase/updateDisplayList()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/dataGridClasses/DataGridBase.as:690]
at
mx.controls::DataGrid/updateDisplayList()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/DataGrid.as:1781]
at
mx.core::ScrollControlBase/setScrollBarProperties()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/core/ScrollControlBase.as:1286]
at
mx.controls::DataGrid/configureScrollBars()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/DataGrid.as:2437]
at
mx.controls.listClasses::ListBase/updateDisplayList()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/listClasses/ListBase.as:4402]
at
mx.controls.dataGridClasses::DataGridBase/updateDisplayList()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/dataGridClasses/DataGridBase.as:690]
at
mx.controls::DataGrid/updateDisplayList()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/DataGrid.as:1781]
at
mx.core::ScrollControlBase/setScrollBarProperties()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/core/ScrollControlBase.as:1286]
at
mx.controls::DataGrid/configureScrollBars()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/DataGrid.as:2437]
at
mx.controls.listClasses::ListBase/updateDisplayList()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/listClasses/ListBase.as:4402]
at
mx.controls.dataGridClasses::DataGridBase/updateDisplayList()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/dataGridClasses/DataGridBase.as:690]
at
mx.controls::DataGrid/updateDisplayList()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/DataGrid.as:1781]
at
mx.core::ScrollControlBase/setScrollBarProperties()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/core/ScrollControlBase.as:1286]
at
mx.controls::DataGrid/configureScrollBars()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/DataGrid.as:2437]
at
mx.controls.listClasses::ListBase/updateDisplayList()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/listClasses/ListBase.as:4402]
at
mx.controls.dataGridClasses::DataGridBase/updateDisplayList()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/dataGridClasses/DataGridBase.as:690]
at
mx.controls::DataGrid/updateDisplayList()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/DataGrid.as:1781]
at
mx.core::ScrollControlBase/setScrollBarProperties()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/core/ScrollControlBase.as:1286]
at
mx.controls::DataGrid/configureScrollBars()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/DataGrid.as:2437]
at
mx.controls.listClasses::ListBase/updateDisplayList()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/listClasses/ListBase.as:4402]
at
mx.controls.dataGridClasses::DataGridBase/updateDisplayList()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/dataGridClasses/DataGridBase.as:690]
at
mx.controls::DataGrid/updateDisplayList()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/DataGrid.as:1781]
at
mx.core::ScrollControlBase/setScrollBarProperties()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/core/ScrollControlBase.as:1286]
at
mx.controls::DataGrid/configureScrollBars()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/DataGrid.as:2437]
at
mx.controls.listClasses::ListBase/updateDisplayList()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/listClasses/ListBase.as:4402]
at
mx.controls.dataGridClasses::DataGridBase/updateDisplayList()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/dataGridClasses/DataGridBase.as:690]
at
mx.controls::DataGrid/updateDisplayList()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/DataGrid.as:1781]
at
mx.core::ScrollControlBase/setScrollBarProperties()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/core/ScrollControlBase.as:1286]
at
mx.controls::DataGrid/configureScrollBars()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/DataGrid.as:2437]
I've encountered an intermittant stack overflow problem displaying data
in an <mx:DataGrid> with two colunms, variableRowHeight="true", and a
custom itemRenderer applied to the second column. The item renderer for
the second column is based on <mx:Box> and has two view states. The
renderer is either in the "default" state and shows wrapped text, or in
a "link" state and the text is a hyperlink where an <mx:Button> to be
displayed instead.
My interface combines an <mx:Tree> beside an <mx:DataGrid> in a simple
master/detail configuration. Selecting an item in the tree resets the
grid dataProvider to show detailed data in the grid for the
corresponding tree item. The MXML for the interface is:
<mx:DividedBox id="resultsBox" width="100%" height="100%"
direction="horizontal">
<mx:Tree id="resultTree" width="37%" height="100%" minWidth="100"
styleName="layerTreeStyle"
doubleClickEnabled="true"
dataProvider="{ viewModel.results }"/>
<mx:DataGrid id="attrGrid"
width="63%"
minWidth="125"
height="100%"
variableRowHeight="true"
draggableColumns="false"
sortableColumns="false"
editable="false">
<mx:columns>
<mx:DataGridColumn headerText="Field" dataField="field"
width="100"/>
<mx:DataGridColumn headerText="Value" dataField="value"
width="125"
itemRenderer="views.renderers.ResultSummaryValueRenderer"/>
</mx:columns>
</mx:DataGrid>
</mx:DividedBox>
The itemRenderer looks like this:
<?xml version="1.0" encoding="utf-8"?>
<mx:Box xmlns:fx="http://ns.adobe.com/mxml/2009"
xmlns:mx="library://ns.adobe.com/flex/mx"
implements="mx.core.IDataRenderer"
width="100%"
paddingLeft="5">
<fx:Script>
<![CDATA[
import events.ResultLinkEvent;
import mx.events.FlexEvent;
import util.StringUtil;
private const linkMethodPat:RegExp = /(ht|f)tp(s?):/i;
private var _data:Object;
[Bindable]
private var displayVal:String = null;
[Bindable]
private var displayTip:String = null;
[Bindable("dataChange")]
public override function get data():Object {
return _data;
public override function set data(value:Object):void {
if ((this._data = value) != null) {
if (isLink(value)) {
var valStr:String = data.value as String;
var sepIndex:int = valStr.indexOf("|");
this.displayVal = (sepIndex >= 0) ?
valStr.substring(0, sepIndex) : "Link";
this.displayTip = valStr.substring(sepIndex + 1);
this.currentState = "link";
return;
this.displayVal = ("value" in data &
StringUtil.isNotBlank(data.value)) ? data.value : "[ no value ]";
this.displayTip = null;
this.currentState = "default";
dispatchEvent(new FlexEvent(FlexEvent.DATA_CHANGE));
private function isLink(attrInfo:Object):Boolean {
var sepIndex:int = attrInfo.value.indexOf("|");
var attrVal:String = (sepIndex == -1) ? attrInfo.value
: String(attrInfo.value).substring(sepIndex);
// return true if value is URL with recognized method
return (attrVal.substring(0,
attrVal.indexOf('//')).match(linkMethodPat) != null);
private function notifyLink(evt:MouseEvent):void {
var attrVal:String = data.value as String;
var sepIndex:int = attrVal.indexOf("|");
dispatchEvent(new ResultLinkEvent(
ResultLinkEvent.NAVIGATE,
data.field,
(sepIndex == -1) ? attrVal :
attrVal.substring(sepIndex + 1)
);
]]>
</fx:Script>
<mx:states>
<mx:State name="default"/>
<mx:State name="link"/>
</mx:states>
<mx:Text id="attrTextCtrl" width="100%"
text="{ displayVal }" selectable="true" excludeFrom="link"/>
<mx:Button id="attrButtonCtrl" label="{ displayVal }" toolTip="{
displayTip }"
click="notifyLink(event)" includeIn="link"/>
</mx:Box>
THE PROBLEM:
At first, when the tree selection changes the grid updates correctly
with new grid content and content is displayed in the second column as
either wrapped text or button as desired. But after an indeterminate
number of tree selection changes the player will freeze and result in
layout-related stack overflow of some kind.
The grid dataProvider always has about 6-12 rows, but the content itself
varies somewhat in how many of those rows have text long enough to wrap
in the grid when tree selection changes. There is nearly always more
content than can be displayed vertically so the grid has to display a
scroll bar.
I wrote that the stack overflow is intermittant because it /seems/ that
if the grid content can be displayed completely without need for a
scroll bar then the problem does not occur. This is often the case when
there is only one row requiring text wrapping in the itemRenderer.
Anyway, stack traces I have (see below) indicate some kind of loop that
occurs attempting to validate and update the display lists of the grid
and the item renderer used until stack is exhausted. Seems like a bug.
Things I've tried to workaround the problem:
1. setting horizontalScrollPolicy="off" verticalScrollPolicy="off"
inside item renderer -> no effect, problem persists
2. basing itemRenderer on <s:MXDataGridItemRenderer/> with no layout
instead of <mx:Box/> -> problem persists
3. basing itemRenderer on <s:MXDataGridItemRenderer/> with
<s:HorizontalLayout/> instead of <mx:Box/> -> problem persists
4. setting variableRowHeight="false" on grid -> problem eliminated, but
long text is not wrapped (undesired visual outcome)
5. removing itemRenderer on second column -> problem eliminated, but is
effectively equivalent to variableRowHeight="false" because default
DataGridItemRenderer class never wraps text (undesired visual outcome).
6. Using a bare minimum itemRenderer based on <mx:Box/> involving only
<mx:Text> for wrapped text and no view states -> problem eliminated, but
its not possible to display a button when content is a hyperlink.
7. Using an itemRenderer based on <mx:Box/> that avoids view states
altogether and tries to toggle which control is visible through setting
of visible and includeInLayout -> seemed better at first, but problem
persists
8. I also tried to extend DataGridColumn to conditionally use two
different itemRenderers based on the data, but
DataGridColumn.getItemRendererFactory() calls private methods I can't
override without bringing the whole class into my tree.
QUESTIONS:
1. Is there another way to write an item renderer with switching view
states in a way that is more robust?
2. How does <mx:DataGrid> compute the needed height for a row? Can I
break the chain somehow by implementing measure() or something?
Any help or suggestions would be greatly appreciated!!!
Jason
P.S. STACK TRACES:
itemRenderer based on mx:Box --
undefined
at
mx.core::LayoutElementUIComponentUtils$/getPreferredUBoundsHeight()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/framework/src/mx/core/LayoutElementUIComponentUtils.as:92]
at
mx.core::LayoutElementUIComponentUtils$/setLayoutBoundsSize()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/framework/src/mx/core/LayoutElementUIComponentUtils.as:510]
at
mx.core::UIComponent/setLayoutBoundsSize()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/framework/src/mx/core/UIComponent.as:14474]
at
spark.layouts::BasicLayout/updateDisplayList()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/spark/src/spark/layouts/BasicLayout.as:508]
at
spark.components.supportClasses::GroupBase/updateDisplayList()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/spark/src/spark/components/supportClasses/GroupBase.as:1302]
at
spark.components::Group/updateDisplayList()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/spark/src/spark/components/Group.as:1179]
at
mx.core::UIComponent/validateDisplayList()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/framework/src/mx/core/UIComponent.as:9531]
at
spark.components::Group/validateDisplayList()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/spark/src/spark/components/Group.as:1101]
at
mx.managers::LayoutManager/validateClient()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/framework/src/mx/managers/LayoutManager.as:1041]
at
mx.core::UIComponent/validateNow()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/framework/src/mx/core/UIComponent.as:8609]
at
mx.controls.dataGridClasses::DataGridBase/updateRendererDisplayList()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/dataGridClasses/DataGridBase.as:1344]
at
mx.controls.dataGridClasses::DataGridBase/drawItem()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/dataGridClasses/DataGridBase.as:1309]
at
mx.controls.dataGridClasses::DataGridBase/drawVisibleItem()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/dataGridClasses/DataGridBase.as:1282]
at
mx.controls.dataGridClasses::DataGridBase/makeRows()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/dataGridClasses/DataGridBase.as:818]
at
mx.controls.dataGridClasses::DataGridBase/makeRowsAndColumns()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/dataGridClasses/DataGridBase.as:702]
at
mx.controls::DataGrid/makeRowsAndColumns()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/DataGrid.as:1882]
at
mx.controls.listClasses::ListBase/makeRowsAndColumnsWithExtraRows()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/listClasses/ListBase.as:1747]
at
mx.controls.listClasses::ListBase/updateDisplayList()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/listClasses/ListBase.as:4388]
at
mx.controls.dataGridClasses::DataGridBase/updateDisplayList()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/dataGridClasses/DataGridBase.as:690]
at
mx.controls::DataGrid/updateDisplayList()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/DataGrid.as:1781]
at
mx.core::ScrollControlBase/setScrollBarProperties()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/core/ScrollControlBase.as:1286]
at
mx.controls::DataGrid/configureScrollBars()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/DataGrid.as:2437]
at
mx.controls.listClasses::ListBase/updateDisplayList()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/listClasses/ListBase.as:4402]
at
mx.controls.dataGridClasses::DataGridBase/updateDisplayList()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/dataGridClasses/DataGridBase.as:690]
at
mx.controls::DataGrid/updateDisplayList()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/DataGrid.as:1781]
at
mx.core::ScrollControlBase/setScrollBarProperties()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/core/ScrollControlBase.as:1286]
at
mx.controls::DataGrid/configureScrollBars()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/DataGrid.as:2437]
at
mx.controls.listClasses::ListBase/updateDisplayList()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/listClasses/ListBase.as:4402]
at
mx.controls.dataGridClasses::DataGridBase/updateDisplayList()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/dataGridClasses/DataGridBase.as:690]
at
mx.controls::DataGrid/updateDisplayList()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/DataGrid.as:1781]
at
mx.core::ScrollControlBase/setScrollBarProperties()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/core/ScrollControlBase.as:1286]
at
mx.controls::DataGrid/configureScrollBars()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/DataGrid.as:2437]
at
mx.controls.listClasses::ListBase/updateDisplayList()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/listClasses/ListBase.as:4402]
at
mx.controls.dataGridClasses::DataGridBase/updateDisplayList()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/dataGridClasses/DataGridBase.as:690]
at
mx.controls::DataGrid/updateDisplayList()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/DataGrid.as:1781]
at
mx.core::ScrollControlBase/setScrollBarProperties()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/core/ScrollControlBase.as:1286]
at
mx.controls::DataGrid/configureScrollBars()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/DataGrid.as:2437]
at
mx.controls.listClasses::ListBase/updateDisplayList()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/listClasses/ListBase.as:4402]
at
mx.controls.dataGridClasses::DataGridBase/updateDisplayList()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/dataGridClasses/DataGridBase.as:690]
at
mx.controls::DataGrid/updateDisplayList()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/DataGrid.as:1781]
at
mx.core::ScrollControlBase/setScrollBarProperties()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/core/ScrollControlBase.as:1286]
at
mx.controls::DataGrid/configureScrollBars()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/DataGrid.as:2437]
at
mx.controls.listClasses::ListBase/updateDisplayList()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/listClasses/ListBase.as:4402]
at
mx.controls.dataGridClasses::DataGridBase/updateDisplayList()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/dataGridClasses/DataGridBase.as:690]
at
mx.controls::DataGrid/updateDisplayList()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/DataGrid.as:1781]
at
mx.core::ScrollControlBase/setScrollBarProperties()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/core/ScrollControlBase.as:1286]
at
mx.controls::DataGrid/configureScrollBars()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/DataGrid.as:2437]
at
mx.controls.listClasses::ListBase/updateDisplayList()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/listClasses/ListBase.as:4402]
at
mx.controls.dataGridClasses::DataGridBase/updateDisplayList()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/dataGridClasses/DataGridBase.as:690]
at
mx.controls::DataGrid/updateDisplayList()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/DataGrid.as:1781]
at
mx.core::ScrollControlBase/setScrollBarProperties()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/core/ScrollControlBase.as:1286]
at
mx.controls::DataGrid/configureScrollBars()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/DataGrid.as:2437]
at
mx.controls.listClasses::ListBase/updateDisplayList()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/listClasses/ListBase.as:4402]
at
mx.controls.dataGridClasses::DataGridBase/updateDisplayList()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/dataGridClasses/DataGridBase.as:690]
at
mx.controls::DataGrid/updateDisplayList()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/DataGrid.as:1781]
at
mx.core::ScrollControlBase/setScrollBarProperties()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/core/ScrollControlBase.as:1286]
at
mx.controls::DataGrid/configureScrollBars()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/DataGrid.as:2437]
at
mx.controls.listClasses::ListBase/updateDisplayList()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/listClasses/ListBase.as:4402]
at
mx.controls.dataGridClasses::DataGridBase/updateDisplayList()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/dataGridClasses/DataGridBase.as:690]
at
mx.controls::DataGrid/updateDisplayList()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/DataGrid.as:1781]
at
mx.core::ScrollControlBase/setScrollBarProperties()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/core/ScrollControlBase.as:1286]
at
mx.controls::DataGrid/configureScrollBars()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/DataGrid.as:2437]
at
mx.controls.listClasses::ListBase/updateDisplayList()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/listClasses/ListBase.as:4402]
at
mx.controls.dataGridClasses::DataGridBase/updateDisplayList()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/dataGridClasses/DataGridBase.as:690]
itemRenderer based on s:MXDataGridItemRenderer:
undefined
at
mx.managers::LayoutManager/invalidateDisplayList()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/framework/src/mx/managers/LayoutManager.as:556]
at
mx.core::UIComponent/invalidateDisplayList()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/framework/src/mx/core/UIComponent.as:8433]
at
mx.core::UIComponent/setActualSize()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/framework/src/mx/core/UIComponent.as:10250]
at
mx.core::LayoutElementUIComponentUtils$/setLayoutBoundsSize()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/framework/src/mx/core/LayoutElementUIComponentUtils.as:519]
at
mx.core::UIComponent/setLayoutBoundsSize()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/framework/src/mx/core/UIComponent.as:14474]
at
spark.layouts::BasicLayout/updateDisplayList()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/spark/src/spark/layouts/BasicLayout.as:508]
at
spark.components.supportClasses::GroupBase/updateDisplayList()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/spark/src/spark/components/supportClasses/GroupBase.as:1302]
at
spark.components::Group/updateDisplayList()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/spark/src/spark/components/Group.as:1179]
at
mx.core::UIComponent/validateDisplayList()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/framework/src/mx/core/UIComponent.as:9531]
at
spark.components::Group/validateDisplayList()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/spark/src/spark/components/Group.as:1101]
at
mx.managers::LayoutManager/validateClient()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/framework/src/mx/managers/LayoutManager.as:1041]
at
mx.core::UIComponent/validateNow()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/framework/src/mx/core/UIComponent.as:8609]
at
mx.controls.dataGridClasses::DataGridBase/updateRendererDisplayList()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/dataGridClasses/DataGridBase.as:1344]
at
mx.controls.dataGridClasses::DataGridBase/drawItem()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/dataGridClasses/DataGridBase.as:1309]
at
mx.controls.dataGridClasses::DataGridBase/drawVisibleItem()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/dataGridClasses/DataGridBase.as:1282]
at
mx.controls.dataGridClasses::DataGridBase/makeRows()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/dataGridClasses/DataGridBase.as:818]
at
mx.controls.dataGridClasses::DataGridBase/makeRowsAndColumns()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/dataGridClasses/DataGridBase.as:702]
at
mx.controls::DataGrid/makeRowsAndColumns()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/DataGrid.as:1882]
at
mx.controls.listClasses::ListBase/makeRowsAndColumnsWithExtraRows()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/listClasses/ListBase.as:1747]
at
mx.controls.listClasses::ListBase/updateDisplayList()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/listClasses/ListBase.as:4388]
at
mx.controls.dataGridClasses::DataGridBase/updateDisplayList()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/dataGridClasses/DataGridBase.as:690]
at
mx.controls::DataGrid/updateDisplayList()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/DataGrid.as:1781]
at
mx.core::ScrollControlBase/setScrollBarProperties()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/core/ScrollControlBase.as:1286]
at
mx.controls::DataGrid/configureScrollBars()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/DataGrid.as:2437]
at
mx.controls.listClasses::ListBase/updateDisplayList()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/listClasses/ListBase.as:4402]
at
mx.controls.dataGridClasses::DataGridBase/updateDisplayList()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/dataGridClasses/DataGridBase.as:690]
at
mx.controls::DataGrid/updateDisplayList()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/DataGrid.as:1781]
at
mx.core::ScrollControlBase/setScrollBarProperties()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/core/ScrollControlBase.as:1286]
at
mx.controls::DataGrid/configureScrollBars()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/DataGrid.as:2437]
at
mx.controls.listClasses::ListBase/updateDisplayList()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/listClasses/ListBase.as:4402]
at
mx.controls.dataGridClasses::DataGridBase/updateDisplayList()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/dataGridClasses/DataGridBase.as:690]
at
mx.controls::DataGrid/updateDisplayList()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/DataGrid.as:1781]
at
mx.core::ScrollControlBase/setScrollBarProperties()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/core/ScrollControlBase.as:1286]
at
mx.controls::DataGrid/configureScrollBars()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/DataGrid.as:2437]
at
mx.controls.listClasses::ListBase/updateDisplayList()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/listClasses/ListBase.as:4402]
at
mx.controls.dataGridClasses::DataGridBase/updateDisplayList()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/dataGridClasses/DataGridBase.as:690]
at
mx.controls::DataGrid/updateDisplayList()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/DataGrid.as:1781]
at
mx.core::ScrollControlBase/setScrollBarProperties()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/core/ScrollControlBase.as:1286]
at
mx.controls::DataGrid/configureScrollBars()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/DataGrid.as:2437]
at
mx.controls.listClasses::ListBase/updateDisplayList()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/listClasses/ListBase.as:4402]
at
mx.controls.dataGridClasses::DataGridBase/updateDisplayList()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/dataGridClasses/DataGridBase.as:690]
at
mx.controls::DataGrid/updateDisplayList()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/DataGrid.as:1781]
at
mx.core::ScrollControlBase/setScrollBarProperties()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/core/ScrollControlBase.as:1286]
at
mx.controls::DataGrid/configureScrollBars()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/DataGrid.as:2437]
at
mx.controls.listClasses::ListBase/updateDisplayList()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/listClasses/ListBase.as:4402]
at
mx.controls.dataGridClasses::DataGridBase/updateDisplayList()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/dataGridClasses/DataGridBase.as:690]
at
mx.controls::DataGrid/updateDisplayList()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/DataGrid.as:1781]
at
mx.core::ScrollControlBase/setScrollBarProperties()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/core/ScrollControlBase.as:1286]
at
mx.controls::DataGrid/configureScrollBars()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/DataGrid.as:2437]
at
mx.controls.listClasses::ListBase/updateDisplayList()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/listClasses/ListBase.as:4402]
at
mx.controls.dataGridClasses::DataGridBase/updateDisplayList()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/dataGridClasses/DataGridBase.as:690]
at
mx.controls::DataGrid/updateDisplayList()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/DataGrid.as:1781]
at
mx.core::ScrollControlBase/setScrollBarProperties()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/core/ScrollControlBase.as:1286]
at
mx.controls::DataGrid/configureScrollBars()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/DataGrid.as:2437]
at
mx.controls.listClasses::ListBase/updateDisplayList()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/listClasses/ListBase.as:4402]
at
mx.controls.dataGridClasses::DataGridBase/updateDisplayList()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/dataGridClasses/DataGridBase.as:690]
at
mx.controls::DataGrid/updateDisplayList()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/DataGrid.as:1781]
at
mx.core::ScrollControlBase/setScrollBarProperties()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/core/ScrollControlBase.as:1286]
at
mx.controls::DataGrid/configureScrollBars()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/DataGrid.as:2437]
at
mx.controls.listClasses::ListBase/updateDisplayList()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/listClasses/ListBase.as:4402]
at
mx.controls.dataGridClasses::DataGridBase/updateDisplayList()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/dataGridClasses/DataGridBase.as:690]
at
mx.controls::DataGrid/updateDisplayList()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/DataGrid.as:1781]
at
mx.core::ScrollControlBase/setScrollBarProperties()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/core/ScrollControlBase.as:1286]
at
mx.controls::DataGrid/configureScrollBars()[/Users/aharui/flex-sdk-4.12.1/frameworks/projects/mx/src/mx/controls/DataGrid.as:2437]