FileDropTargetListener.java 文件源码

@SuppressWarnings("unchecked")
@Override
public void drop(DropTargetDropEvent dtde) {
    try {
        Transferable t = dtde.getTransferable();
        List<File> files = null;
        if (t.isDataFlavorSupported(DataFlavor.javaFileListFlavor)) {
            dtde.acceptDrop(DnDConstants.ACTION_REFERENCE);
            files = (List<File>) t
                    .getTransferData(DataFlavor.javaFileListFlavor);
        } else if (uriFlavor != null && t.isDataFlavorSupported(uriFlavor)) {
            dtde.acceptDrop(DnDConstants.ACTION_REFERENCE);
            files = textURIListToFileList((String) t
                    .getTransferData(uriFlavor));
        } else
            dtde.rejectDrop();

        if (files != null && files.size() == 1) {
            openFile(files.get(0));
            dtde.dropComplete(true);
        } else
            dtde.dropComplete(false);
    } catch (UnsupportedFlavorException ex) {
        dtde.rejectDrop();
    } catch (IOException e) {
        dtde.rejectDrop();
    }
}