我的問題是,當用戶單擊具有組合框編輯器的DataGrid單元,然後立即單擊遠離單元格時,該單元格中的文本值將消失。Labelfunction會干擾Combobox項目編輯器
我在datagrid上有一個itemEditEnd處理程序,它顯示我用作editorDataField的屬性的值就好了。但是在該網格列上的labelFunction(在itemEditEnd處理程序之後調用)會將其視爲零。
爲什麼labelFunction和item編輯器不能很好地一起玩?
這裏的DataGridColumn:
<mx:DataGridColumn
headerText="Field Name"
dataField="attribId"
editorDataField="attributeId"
labelFunction="getFieldName">
這裏是項目編輯
<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>
,這裏是對的DataGridColumn標籤功能。
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;
}
這裏是在itemEditEndHandler爲DataGrid執行的代碼:
VAR rowCount時:整數= fieldsGridEmpty.selectedIndex; var attribCombo:ComboBox = ComboBox(fieldsGridEmpty.itemEditorInstance);現在
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;
}
,該項目的編輯處理程序顯示「attribId」的有效值:
newFieldsDp[ rowCount ].attribId = attribCombo.selectedItem.attribId;
然而,標籤的功能被在此之後執行和item.attribId值爲0。這就是'fieldName'的原因是一個空字符串,因爲沒有匹配。
顯示一些代碼;這有點困惑。例如,你使用DataGrid列的labelFunction嗎?還是爲Combobox?你在使用Spark組件還是Halo組件? – JeffryHouser
我已經使用該代碼更新了帖子。不幸的是,我無法弄清楚如何讓mxml進入代碼模式,對不起。但謝謝你看看。 – fumeng
打開的括號/括號按鈕將格式化突出顯示的代碼。 – JeffryHouser