spark Datagrid中的SelectItem方法? [英] SelectItem Method in spark Datagrid?
问题描述
这可以用于扩展 mx:Datagrid
(其他答案)
override protected function selectItem(item:IListItemRenderer,
shiftKey:Boolean,ctrlKey:Boolean,
transition:Boolean = true):Boolean
{
//只运行选择代码如果一个复选框被击中,总是
//假装我们使用ctrl选择
if(item is CheckBox)
return super.selectItem(item,shiftKey,true,transition );
else // Avenir Cokaj 23/06/11:这使flex的自然选择
返回super.selectItem(item,shiftKey,ctrlKey,transition);
}
但是没有$ code> super。 s中的selectItem
s:Datagrid 那么如何启用spark datagrid上的控制键?
使用 selectionMode 属性。不需要更多的子类。在您的情况下,您需要将其设置为 multipleRows
。
< s:DataGrid selectionMode =multipleRows/>
其他值为:
- none
- singleCell
- singleRow(默认)
- multipleCells
我相信他们很自明。
现在,如果你希望这些行是通过单击进行多重选择(就像控制键不断被按下),可以通过对DataGrid进行子类化来实现:
public class MyDataGrid extends DataGrid {
override protected function grid_mouseDownHandler(event:GridEvent):void {
event.ctrlKey = true;
super.grid_mouseDownHandler(event);
}
}
我们只是拦截事件并设置其 ctrlKey
属性始终为 true
。
I am enabling multiple row selection with clicking checkbox Item renderer.
this works for extending mx:Datagrid
(other answer)
override protected function selectItem(item:IListItemRenderer,
shiftKey:Boolean, ctrlKey:Boolean,
transition:Boolean = true):Boolean
{
// only run selection code if a checkbox was hit and always
// pretend we're using ctrl selection
if (item is CheckBox)
return super.selectItem(item, shiftKey, true, transition);
else //Avenir Cokaj 23/06/11: this enables the flex's natural selection
return super.selectItem(item, shiftKey, ctrlKey, transition);
}
But there is no super.selectItem
in s:Datagrid
So how to enable control key on spark datagrid?
Use the selectionMode property. No more subclassing required. In your case, you would want to set it to multipleRows
.
<s:DataGrid selectionMode="multipleRows" />
Other values are:
- none
- singleCell
- singleRow (default)
- multipleCells
I believe they are pretty self-explanatory.
Now if you wish the rows to be multi-selected with a single click (as if the control key were constantly pressed), you can do this by subclassing DataGrid like this:
public class MyDataGrid extends DataGrid {
override protected function grid_mouseDownHandler(event:GridEvent):void {
event.ctrlKey = true;
super.grid_mouseDownHandler(event);
}
}
We just intercept the event and set its ctrlKey
property to always be true
.
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