AcceptAction.java 文件源码

public State dragEnter (Widget widget, WidgetDropTargetDragEvent event) {
    ConnectorState acceptable = provider.isAcceptable (widget, event.getPoint (), event.getTransferable ());

    if (acceptable == ConnectorState.ACCEPT) {
        event.acceptDrag (DnDConstants.ACTION_COPY_OR_MOVE);
        return State.CONSUMED;
    } else if (acceptable == ConnectorState.REJECT_AND_STOP) {
        event.rejectDrag ();
        return State.CONSUMED;
    }
    return State.REJECTED;
}