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/*******************************************************************************
* Copyright (c) 2010 THALES GLOBAL SERVICES.
* 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:
* Obeo - initial API and implementation
*******************************************************************************/
package org.eclipse.sirius.diagram.ui.tools.internal.editor.tabbar;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.ArmEvent;
import org.eclipse.swt.events.ArmListener;
import org.eclipse.swt.graphics.Point;
import org.eclipse.swt.layout.FillLayout;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Label;
import org.eclipse.swt.widgets.MenuItem;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.Widget;
import org.eclipse.ui.PlatformUI;
/**
* A listener which listens when a menu item is armed to display a tooltip.
*
* @author mchauvin
*/
public class MenuContributionItemArmListener implements ArmListener {
private Control control;
private Shell currentTooltip;
/**
* Create a new instance.
*
* @param control
* the control
*/
public MenuContributionItemArmListener(Control control) {
this.control = control;
}
/**
* {@inheritDoc}
*
* @see org.eclipse.swt.events.ArmListener#widgetArmed(org.eclipse.swt.events.ArmEvent)
*/
public void widgetArmed(final ArmEvent e) {
Widget widget = e.widget;
if (widget instanceof MenuItem) {
Object data = ((MenuItem) widget).getData(AbstractMenuContributionItem.TOOLTIP);
if (data instanceof String) {
createTooltip((String) data);
}
}
}
private void createTooltip(String tooltipText) {
if (currentTooltip != null && !currentTooltip.isDisposed()) {
currentTooltip.dispose();
}
Label label;
final Shell tip = new Shell(control.getShell(), SWT.ON_TOP | SWT.TOOL);
tip.setLayout(new FillLayout());
label = new Label(tip, SWT.NONE);
Display display = PlatformUI.getWorkbench().getDisplay();
label.setForeground(display.getSystemColor(SWT.COLOR_INFO_FOREGROUND));
label.setBackground(display.getSystemColor(SWT.COLOR_INFO_BACKGROUND));
label.setText(tooltipText);
Point size = tip.computeSize(SWT.DEFAULT, SWT.DEFAULT);
Point pt = PlatformUI.getWorkbench().getDisplay().getCursorLocation();
int offset = 15;
tip.setBounds(pt.x + offset, pt.y - offset, size.x, size.y);
tip.setVisible(true);
control.getDisplay().timerExec(3000, new Runnable() {
public void run() {
tip.dispose();
}
});
currentTooltip = tip;
}
}
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