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/*******************************************************************************
* Copyright (c) 2000, 2004 IBM Corporation and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.swt.snippets;
/*
* Drag and Drop example snippet: drag text between two labels
*
* For a list of all SWT example snippets see
* http://dev.eclipse.org/viewcvs/index.cgi/%7Echeckout%7E/platform-swt-home/dev.html#snippets
*/
import org.eclipse.swt.*;
import org.eclipse.swt.dnd.*;
import org.eclipse.swt.layout.*;
import org.eclipse.swt.widgets.*;
public class Snippet78 {
public static void main (String [] args) {
Display display = Display.getDefault ();
final Shell shell = new Shell (display);
shell.setLayout(new FillLayout());
final Label label1 = new Label (shell, SWT.BORDER);
label1.setText ("TEXT");
final Label label2 = new Label (shell, SWT.BORDER);
setDragDrop (label1);
setDragDrop (label2);
shell.setSize (200, 200);
shell.open ();
while (!shell.isDisposed ()) {
if (!display.readAndDispatch ()) display.sleep ();
}
display.dispose ();
}
public static void setDragDrop (final Label label) {
Transfer[] types = new Transfer[] {TextTransfer.getInstance()};
int operations = DND.DROP_MOVE | DND.DROP_COPY | DND.DROP_LINK;
final DragSource source = new DragSource (label, operations);
source.setTransfer(types);
source.addDragListener (new DragSourceListener () {
public void dragStart(DragSourceEvent event) {
event.doit = (label.getText ().length () != 0);
}
public void dragSetData (DragSourceEvent event) {
event.data = label.getText ();
}
public void dragFinished(DragSourceEvent event) {
if (event.detail == DND.DROP_MOVE)
label.setText ("");
}
});
DropTarget target = new DropTarget(label, operations);
target.setTransfer(types);
target.addDropListener (new DropTargetAdapter() {
public void drop(DropTargetEvent event) {
if (event.data == null) {
event.detail = DND.DROP_NONE;
return;
}
label.setText ((String) event.data);
}
});
}
}
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