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/*******************************************************************************
* Copyright (c) 2007 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 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(new Transfer[] {URLTransfer.getInstance()});
source.addDragListener (new DragSourceListener () {
public void dragStart(DragSourceEvent e) {
}
public void dragSetData(DragSourceEvent e) {
e.data = label.getText();
}
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(new Transfer[] {URLTransfer.getInstance()});
target.addDropListener (new DropTargetAdapter() {
public void dragEnter(DropTargetEvent e) {
if (e.detail == DND.DROP_NONE)
e.detail = DND.DROP_LINK;
}
public void dragOperationChanged(DropTargetEvent e) {
if (e.detail == DND.DROP_NONE)
e.detail = DND.DROP_LINK;
}
public void drop(DropTargetEvent event) {
if (event.data == null) {
event.detail = DND.DROP_NONE;
return;
}
label.setText(((String) event.data));
}
});
}
}
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