我的问题是,当用户单击具有组合框编辑器的DataGrid单元,然后立即单击远离单元格时,该单元格中的文本值将消失。Labelfunction会干扰Combobox项目编辑器
我在datagrid上有一个itemEditEnd处理程序,它显示我用作editorDataField的属性的值就好了。但是在该网格列上的labelFunction(在itemEditEnd处理程序之后调用)会将其视为零。
为什么labelFunction和item编辑器不能很好地一起玩?
这里的DataGridColumn:
<mx:DataGridColumn
headerText="Field Name"
dataField="attribId"
editorDataField="attributeId"
labelFunction="getFieldName">
这里是项目编辑
<mx:itemEditor>
<mx:Component>
<mx:ComboBox
dataProvider="{this.outerDocument.lendersModel.fileAttributes}"
creationComplete="{outerDocument.selectAttribute();}"
labelField="fileAttribDesc"
change="updateAttribute(event);"
selectedIndex="-1">
<mx:Script>
<![CDATA[
[Bindable]
public var attributeId:int;
private var fileDetailRecordType:String;
override public function set data(value:Object):void{
this.attributeId = value.attribId; // adding this line appears to be the fix.
var category:String = value.category;
this.filterFileAttributes(category);
}
/** Change handler for combobox in Record Type column.
*/
private function filterFileAttributes(recordType:String):void{
this.fileDetailRecordType = recordType;
this.dataProvider.filterFunction = filterByRecordType;
this.dataProvider.refresh();
}
/** Filters the file attributes collection based on the record type.
*/
private function filterByRecordType(item:Object):String{
return item.category.match(this.fileDetailRecordType);
}
private function updateAttribute(event:*):void{
attributeId = event.currentTarget.selectedItem.attribId;
this.outerDocument.selectedAttributeId = attributeId;
}
]]>
</mx:Script>
</mx:ComboBox>
</mx:Component>
</mx:itemEditor>
,这里是对的DataGridColumn标签功能。
private function getFieldName(item:Object, dgc:DataGridColumn):String{
var fieldName:String = '';
/* At this point the lendersModel.fileAttributes collection is
filtered based on the record type. We need to remove the filter
so we can search the entire collection, not just the filtered subset. */
lendersModel.fileAttributes.filterFunction = refreshFilter;
lendersModel.fileAttributes.refresh();
for each(var attrib:FileAttributeDTO in lendersModel.fileAttributes){
if(attrib.attribId == item.attribId)
fieldName = attrib.fileAttribDesc;
}
return fieldName;
}
这里是在itemEditEndHandler为DataGrid执行的代码:
VAR rowCount时:整数= fieldsGridEmpty.selectedIndex; var attribCombo:ComboBox = ComboBox(fieldsGridEmpty.itemEditorInstance);现在
if(rowCount != -1 && attribCombo.selectedItem != null)
{
newFieldsDp[ rowCount ].fileAttribute.dataType = attribCombo.selectedItem.dataType;
newFieldsDp[ rowCount ].fileAttribute.dataLength = attribCombo.selectedItem.dataLength;
newFieldsDp[ rowCount ].fileAttribute.fileAttribDesc = attribCombo.selectedLabel;
newFieldsDp[ rowCount ].dataLength = attribCombo.selectedItem.dataLength;
newFieldsDp[ rowCount ].attribId = attribCombo.selectedItem.attribId;
}
,该项目的编辑处理程序显示“attribId”的有效值:
newFieldsDp[ rowCount ].attribId = attribCombo.selectedItem.attribId;
然而,标签的功能被在此之后执行和item.attribId值为0。这就是'fieldName'的原因是一个空字符串,因为没有匹配。
显示一些代码;这有点困惑。例如,你使用DataGrid列的labelFunction吗?还是为Combobox?你在使用Spark组件还是Halo组件? – JeffryHouser
我已经使用该代码更新了帖子。不幸的是,我无法弄清楚如何让mxml进入代码模式,对不起。但谢谢你看看。 – fumeng
打开的括号/括号按钮将格式化突出显示的代码。 – JeffryHouser