| /* |
| * Copyright (c) 2009, 2013, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| /* |
| * Panel is a DropTarget |
| * |
| */ |
| |
| import java.awt.*; |
| import java.awt.datatransfer.*; |
| import java.awt.dnd.*; |
| import java.io.*; |
| |
| |
| class DnDTarget extends Panel implements DropTargetListener { |
| //private int dragOperation = DnDConstants.ACTION_COPY | DnDConstants.ACTION_MOVE; |
| Color bgColor; |
| Color htColor; |
| |
| DnDTarget(Color bgColor, Color htColor) { |
| super(); |
| setLayout(new FlowLayout()); |
| this.bgColor = bgColor; |
| this.htColor = htColor; |
| setBackground(bgColor); |
| setDropTarget(new DropTarget(this, this)); |
| add(new Label("drop here")); |
| } |
| |
| boolean check(DropTargetDragEvent dtde) |
| { |
| if (dtde.getCurrentDataFlavorsAsList().contains(DataFlavor.javaFileListFlavor)) { |
| dtde.acceptDrag(DnDConstants.ACTION_COPY); |
| return true; |
| } |
| return false; |
| } |
| |
| public void dragEnter(DropTargetDragEvent dtde) { |
| if(check(dtde)){ |
| setBackground(htColor); |
| repaint(); |
| } |
| } |
| |
| public void dragOver(DropTargetDragEvent dtde) { |
| check(dtde); |
| } |
| |
| public void dropActionChanged(DropTargetDragEvent dtde) { |
| check(dtde); |
| } |
| |
| public void dragExit(DropTargetEvent e) { |
| setBackground(bgColor); |
| repaint(); |
| } |
| |
| public void dragScroll(DropTargetDragEvent e) { |
| System.out.println("[Target] dragScroll"); |
| } |
| |
| public void drop(DropTargetDropEvent dtde) { |
| System.out.println("[Target] drop"); |
| boolean success = false; |
| dtde.acceptDrop(DnDConstants.ACTION_COPY); |
| if( dtde.getCurrentDataFlavorsAsList().contains(DataFlavor.javaFileListFlavor) ){ |
| System.out.println("[Target] DROP OK!"); |
| try { |
| Transferable transfer = dtde.getTransferable(); |
| java.util.List<File> fl = (java.util.List<File>)transfer.getTransferData(DataFlavor.javaFileListFlavor); |
| for(File f : fl){ |
| add(new Button(f.getCanonicalPath())); |
| System.out.println("[Target] drop file:" + f.getCanonicalPath()); |
| } |
| validate(); |
| } catch(Exception ex) { |
| ex.printStackTrace(); |
| } |
| setBackground(bgColor); |
| repaint(); |
| success = true; |
| } |
| dtde.dropComplete(success); |
| } |
| } |