Vaadin7拖放式标识目标组件

Question

我可以通过以下方式从DragAndDropEvent获取源组件形式：

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

如何从DragAndDropEvent获取目标组件？ （释放鼠标的组件。）可惜没有t.getTargetComponent（）...

Answer 1

看Drag & Drop secion of the book of vaadin

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();
        ....