问题描述
我的应用程序中有2个视图。在其中一个视图中,我可以看到包含自定义元素(如MDocument,MVersion ...)的TreeStructure。我希望能够拖动从我的视图类型MVersion到另一个,但我不知道如何声明传输类型或检查选择的项目是否是支持的类型。
任何想法?
最简单的方法是使用 LocalSelectionTransfer
。一旦你向观众添加了拖放支持...
你设置了被拖入的 ISelection
DragSourceListener.dragStart()
方法:
LocalSelectionTransfer.getTransfer()。为setSelection(选择);
在 DropTargetListener.drop()
检查类型是否支持,并检索选择:
if(LocalSelectionTransfer.getTransfer()。isSupportedType(event.currentDataType))
ISelection sel = LocalSelectionTransfer.getTransfer()。getSelection();
...
I have 2 views in my application. In one of the views I can see a TreeStructure containing custom defined elements (such as MDocument, MVersion...).
I would like to be able to drag items of type MVersion from my view to the other one but I don't know how to declare the transfer types or to check if the item selected is a supported type.
Any ideas?
The easiest way is to use LocalSelectionTransfer
. Once you have added drag/drop support to your viewers...
You set the ISelection
that is dragged in DragSourceListener.dragStart()
method:
LocalSelectionTransfer.getTransfer().setSelection(selection);
In the DropTargetListener.drop()
you check if the type is supported and retrieve the selection:
if (LocalSelectionTransfer.getTransfer().isSupportedType(event.currentDataType))
ISelection sel = LocalSelectionTransfer.getTransfer().getSelection();
...
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