tests/org.eclipse.swt.tests.gtk/ManualTests/org/eclipse/swt/tests/gtk/snippets/Bug515773_GrabShellON_TOP.java

/*******************************************************************************
 * 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.gtk.snippets;

import static org.eclipse.swt.events.SelectionListener.widgetSelectedAdapter;

import org.eclipse.swt.SWT;
import org.eclipse.swt.layout.FillLayout;
import org.eclipse.swt.layout.FormAttachment;
import org.eclipse.swt.layout.FormData;
import org.eclipse.swt.layout.FormLayout;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Label;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.Text;

/*
 * Title: Shells that are ON_TOP are not getting input focus on Wayland.
 * How to run: Run snippet, click on button. Try to type stuff.
 * Expected results: Typing stuff should be typed in the text field. On Wayland this didn't used to work.
 * GTK Version(s): 3.22 with wayland.
 */
public class Bug515773_GrabShellON_TOP {

public static void main (String [] args) {
	Display display = new Display ();
	final Shell shell = new Shell (display);
	shell.setText("Shell");
	FillLayout fillLayout = new FillLayout();
	fillLayout.marginWidth = 10;
	fillLayout.marginHeight = 10;
	shell.setLayout(fillLayout);

	Button open = new Button (shell, SWT.PUSH);
	open.setText ("Prompt for a String");
	open.addSelectionListener(widgetSelectedAdapter(e -> {
		final Shell dialog = new Shell (shell, SWT.TOOL | SWT.ON_TOP | SWT.RESIZE);
		dialog.setText("Dialog Shell");
		FormLayout formLayout = new FormLayout ();
		formLayout.marginWidth = 10;
		formLayout.marginHeight = 10;
		formLayout.spacing = 10;
		dialog.setLayout (formLayout);
		dialog.setLocation(26, 52);

		Label label = new Label (dialog, SWT.NONE);
		label.setText ("Type a String:");
		FormData data = new FormData ();
		label.setLayoutData (data);

		Button cancel = new Button (dialog, SWT.PUSH);
		cancel.setText ("Cancel");
		data = new FormData ();
		data.width = 60;
		data.right = new FormAttachment (100, 0);
		data.bottom = new FormAttachment (100, 0);
		cancel.setLayoutData (data);
		cancel.addSelectionListener (widgetSelectedAdapter(event -> {
			System.out.println("User cancelled dialog");
			dialog.close ();
		}));

		final Text text = new Text(dialog, SWT.SINGLE | SWT.BORDER | SWT.SEARCH
				| SWT.ICON_CANCEL);


		data = new FormData ();
		data.width = 200;
		data.left = new FormAttachment (label, 0, SWT.DEFAULT);
		data.right = new FormAttachment (100, 0);
		data.top = new FormAttachment (label, 0, SWT.CENTER);
		data.bottom = new FormAttachment (cancel, 0, SWT.DEFAULT);
		text.setLayoutData (data);

		Button ok = new Button (dialog, SWT.PUSH);
		ok.setText ("OK");
		data = new FormData ();
		data.width = 60;
		data.right = new FormAttachment (cancel, 0, SWT.DEFAULT);
		data.bottom = new FormAttachment (100, 0);
		ok.setLayoutData (data);
		ok.addSelectionListener (widgetSelectedAdapter(event -> {
			dialog.close ();
		}));

		dialog.setDefaultButton (ok);
		dialog.pack ();
		text.setFocus();
		dialog.open ();
		System.out.println("dialog at "+dialog.getBounds());
	}));
	shell.pack ();
	shell.open ();

	while (!shell.isDisposed ()) {
		if (!display.readAndDispatch ()) display.sleep ();
	}
	display.dispose ();
}
}