examples/org.eclipse.e4.demo.e4photo/src/org/eclipse/e4/demo/e4photo/Location.java

/*******************************************************************************
 * Copyright (c) 2008, 2011 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.e4.demo.e4photo;

import javax.inject.Inject;
import org.eclipse.e4.core.di.annotations.Optional;
import org.eclipse.e4.ui.di.Focus;
import org.eclipse.e4.ui.di.UIEventTopic;
import org.eclipse.swt.SWT;
import org.eclipse.swt.browser.Browser;
import org.eclipse.swt.layout.FillLayout;
import org.eclipse.swt.widgets.Composite;

public class Location {

	private Browser browser;
	private Composite browserParent;
	private Exif exif;

	@Inject
	public Location(Composite parent) {
		browserParent = new Composite(parent, SWT.NONE);
		browserParent.setLayout(new FillLayout());
		browserParent.setData("org.eclipse.e4.ui.css.id", "location");
	}
	
	@Focus
	void setFocus() {
		browserParent.setFocus();
	}

	@Inject @Optional
	public void setInput(@UIEventTopic(ExifTable.EVENT_NAME) Exif input) {
		if (input == null || this.exif == input) {
			return;
		}
		this.exif = input;

		// Create Browser widget only when we have content to show
		// so that we can control background color when there is no content
		if (exif == null || exif.getGpsLatitude() == null) {
			if (browser != null) {
				browser.dispose();
				browser = null;
			}
		} else {
			if (browser == null) {
				browser = new Browser(browserParent, SWT.NONE);
				browserParent.layout();
			}
			browser.setUrl("http://maps.google.com/maps?q="
					+ exif.getGpsLatitude() + "+" + exif.getGpsLongitude());
		}
	}

}