| /******************************************************************************* |
| * Copyright (c) 2007, 2017 IBM Corporation and others. |
| * |
| * This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License 2.0 |
| * which accompanies this distribution, and is available at |
| * https://www.eclipse.org/legal/epl-2.0/ |
| * |
| * SPDX-License-Identifier: EPL-2.0 |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.swt.snippets; |
| |
| /* |
| * Drag and Drop example snippet: drag a URL between two labels. |
| * |
| * For a list of all SWT example snippets see |
| * http://www.eclipse.org/swt/snippets/ |
| */ |
| import org.eclipse.swt.*; |
| import org.eclipse.swt.dnd.*; |
| import org.eclipse.swt.layout.*; |
| import org.eclipse.swt.widgets.*; |
| |
| public class Snippet284 { |
| |
| public static void main (String [] args) { |
| |
| Display display = new Display (); |
| final Shell shell = new Shell (display); |
| shell.setText("URLTransfer"); |
| shell.setLayout(new FillLayout()); |
| final Label label1 = new Label (shell, SWT.BORDER); |
| label1.setText ("http://www.eclipse.org"); |
| final Label label2 = new Label (shell, SWT.BORDER); |
| setDragSource (label1); |
| setDropTarget (label2); |
| shell.setSize(600, 300); |
| shell.open (); |
| while (!shell.isDisposed ()) { |
| if (!display.readAndDispatch ()) display.sleep (); |
| } |
| display.dispose (); |
| } |
| public static void setDragSource (final Label label) { |
| int operations = DND.DROP_MOVE | DND.DROP_COPY | DND.DROP_LINK; |
| final DragSource source = new DragSource (label, operations); |
| source.setTransfer(URLTransfer.getInstance()); |
| source.addDragListener (new DragSourceListener () { |
| @Override |
| public void dragStart(DragSourceEvent e) { |
| } |
| @Override |
| public void dragSetData(DragSourceEvent e) { |
| e.data = label.getText(); |
| } |
| @Override |
| public void dragFinished(DragSourceEvent event) { |
| } |
| }); |
| } |
| |
| public static void setDropTarget (final Label label) { |
| int operations = DND.DROP_MOVE | DND.DROP_COPY | DND.DROP_LINK; |
| DropTarget target = new DropTarget(label, operations); |
| target.setTransfer(URLTransfer.getInstance()); |
| target.addDropListener (new DropTargetAdapter() { |
| @Override |
| public void dragEnter(DropTargetEvent e) { |
| if (e.detail == DND.DROP_NONE) |
| e.detail = DND.DROP_LINK; |
| } |
| @Override |
| public void dragOperationChanged(DropTargetEvent e) { |
| if (e.detail == DND.DROP_NONE) |
| e.detail = DND.DROP_LINK; |
| } |
| @Override |
| public void drop(DropTargetEvent event) { |
| if (event.data == null) { |
| event.detail = DND.DROP_NONE; |
| return; |
| } |
| label.setText(((String) event.data)); |
| } |
| }); |
| } |
| } |