Vaadin7拖放识别目标组件

Question

我可以通过以下方式从DragAndDropEvent中获取源组件：

final DataBoundTransferable t = (DataBoundTransferable) event.getTransferable();
Component from = t.getSourceComponent();

如何从DragAndDropEvent中获取目标组件？(鼠标释放的组件。)遗憾的是，没有t.getTargetComponent()..。

Answer 1

看看“瓦丁书”的拖放

event.getTargetDetails()应该是您搜索的内容

public void drop(DragAndDropEvent event) {
        // Wrapper for the object that is dragged
        Transferable t = event.getTransferable();

        // Make sure the drag source is the same tree
        if (t.getSourceComponent() != tree)
            return;

        TreeTargetDetails target = (TreeTargetDetails)
            event.getTargetDetails();
        ....