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/*******************************************************************************
* Copyright (c) 2018 Red Hat and others. All rights reserved.
* The contents of this file are made available under the terms
* of the GNU Lesser General Public License (LGPL) Version 2.1 that
* accompanies this distribution (lgpl-v21.txt). The LGPL is also
* available at http://www.gnu.org/licenses/lgpl.html. If the version
* of the LGPL at http://www.gnu.org is different to the version of
* the LGPL accompanying this distribution and there is any conflict
* between the two license versions, the terms of the LGPL accompanying
* this distribution shall govern.
*
* Contributors:
* Red Hat - initial API and implementation
*******************************************************************************/
package org.eclipse.swt.tests.manual;
import org.eclipse.swt.SWT;
import org.eclipse.swt.browser.Browser;
import org.eclipse.swt.dnd.DND;
import org.eclipse.swt.dnd.DragSource;
import org.eclipse.swt.dnd.DragSourceEvent;
import org.eclipse.swt.dnd.DragSourceListener;
import org.eclipse.swt.dnd.DropTarget;
import org.eclipse.swt.dnd.DropTargetAdapter;
import org.eclipse.swt.dnd.DropTargetEvent;
import org.eclipse.swt.dnd.TextTransfer;
import org.eclipse.swt.dnd.Transfer;
import org.eclipse.swt.layout.FillLayout;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Label;
import org.eclipse.swt.widgets.Shell;
/**
* Title: Browser does not send DragDetect
* How to run: Run snippet. Try to drag text from the browser (left), onto Label (right)
* Expected results: "Drag started" should be printed in the console.
* Actual results: Nothing is printed in console. DragSource has no impact on browser.
* GTK version(s): all
*
* This snippet has been adopted from Snippet78
*/
public class Bug497705_BrowserDragDetect {
public static void main (String [] args) {
Display display = new Display ();
final Shell shell = new Shell (display);
shell.setLayout(new FillLayout());
final Browser b = new Browser (shell, SWT.BORDER);
b.setText ("TEXT");
final Label label2 = new Label (shell, SWT.BORDER);
setDrag (b); //doesn't seem to have an effect.
setDrop (label2);
shell.setSize (200, 200);
shell.open ();
while (!shell.isDisposed ()) {
if (!display.readAndDispatch ()) display.sleep ();
}
display.dispose ();
}
public static void setDrag(final Browser browser) {
Transfer[] types = new Transfer[] {TextTransfer.getInstance()};
int operations = DND.DROP_MOVE | DND.DROP_COPY | DND.DROP_LINK;
final DragSource source = new DragSource (browser, operations);
source.setTransfer(types);
source.addDragListener (new DragSourceListener () {
@Override
public void dragStart(DragSourceEvent event) {
event.doit = (browser.getText ().length () != 0);
System.out.println("Drag started"); //not ran.
}
@Override
public void dragSetData (DragSourceEvent event) {
event.data = browser.getText ();
}
@Override
public void dragFinished(DragSourceEvent event) {
if (event.detail == DND.DROP_MOVE)
browser.setText ("");
}
});
}
public static void setDrop (final Label label) {
Transfer[] types = new Transfer[] {TextTransfer.getInstance()};
int operations = DND.DROP_MOVE | DND.DROP_COPY | DND.DROP_LINK;
DropTarget target = new DropTarget(label, operations);
target.setTransfer(types);
target.addDropListener (new DropTargetAdapter() {
@Override
public void drop(DropTargetEvent event) {
if (event.data == null) {
event.detail = DND.DROP_NONE;
return;
}
label.setText ((String) event.data);
}
});
}
}
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