org.kalypso.ogc.gml.featureview.control.ImageBrowserOpenAction.java Source code

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Here is the source code for org.kalypso.ogc.gml.featureview.control.ImageBrowserOpenAction.java

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/*----------------    FILE HEADER KALYPSO ------------------------------------------
 *
 *  This file is part of kalypso.
 *  Copyright (C) 2004 by:
 * 
 *  Technical University Hamburg-Harburg (TUHH)
 *  Institute of River and coastal engineering
 *  Denickestrae 22
 *  21073 Hamburg, Germany
 *  http://www.tuhh.de/wb
 * 
 *  and
 *  
 *  Bjoernsen Consulting Engineers (BCE)
 *  Maria Trost 3
 *  56070 Koblenz, Germany
 *  http://www.bjoernsen.de
 * 
 *  This library is free software; you can redistribute it and/or
 *  modify it under the terms of the GNU Lesser General Public
 *  License as published by the Free Software Foundation; either
 *  version 2.1 of the License, or (at your option) any later version.
 * 
 *  This library is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 *  Lesser General Public License for more details.
 * 
 *  You should have received a copy of the GNU Lesser General Public
 *  License along with this library; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 * 
 *  Contact:
 * 
 *  E-Mail:
 *  belger@bjoernsen.de
 *  schlienger@bjoernsen.de
 *  v.doemming@tuhh.de
 *   
 *  ---------------------------------------------------------------------------*/
package org.kalypso.ogc.gml.featureview.control;

import java.io.File;
import java.net.URL;

import org.apache.commons.io.FileUtils;
import org.apache.commons.lang3.StringUtils;
import org.eclipse.jface.action.Action;
import org.eclipse.jface.dialogs.ErrorDialog;
import org.eclipse.jface.dialogs.MessageDialog;
import org.eclipse.jface.resource.ImageDescriptor;
import org.eclipse.swt.program.Program;
import org.eclipse.swt.widgets.Event;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.ui.PartInitException;
import org.eclipse.ui.PlatformUI;
import org.eclipse.ui.browser.IWebBrowser;
import org.eclipse.ui.browser.IWorkbenchBrowserSupport;
import org.kalypso.contribs.eclipse.jface.wizard.IUpdateable;
import org.kalypso.ui.ImageProvider;
import org.kalypso.ui.KalypsoGisPlugin;
import org.kalypso.ui.internal.i18n.Messages;

/**
 * @author Gernot Belger
 */
public class ImageBrowserOpenAction extends Action implements IUpdateable {
    private final ImageExternalBrowserFeatureControl m_featureControl;

    private final IWebBrowser m_externalBrowser;

    public ImageBrowserOpenAction(final ImageExternalBrowserFeatureControl featureControl) {
        m_featureControl = featureControl;

        m_externalBrowser = initBrowserSupport();

        setText(Messages.getString("ImageBrowserOpenAction_0")); //$NON-NLS-1$
        setToolTipText(getText());

        final ImageDescriptor image = KalypsoGisPlugin.getImageProvider()
                .getImageDescriptor(ImageProvider.DESCRIPTORS.EXTERNAL_BROWSER);
        setImageDescriptor(image);

        update();
    }

    private IWebBrowser initBrowserSupport() {
        try {
            final IWorkbenchBrowserSupport support = PlatformUI.getWorkbench().getBrowserSupport();
            return support.getExternalBrowser();
        } catch (final PartInitException e) {
            e.printStackTrace();
            return null;
        }
    }

    @Override
    public void update() {
        final URL location = m_featureControl.getLocation();

        // TODO: does not work properly, probably because FeatureView stuf reenabled the element.
        final boolean enabled = isEnabled(location);

        setEnabled(enabled);
    }

    private boolean isEnabled(final URL location) {
        if (location == null)
            return false;

        if (StringUtils.isBlank(location.toExternalForm()))
            return false;

        final File file = FileUtils.toFile(location);
        if (file != null && !file.isFile())
            return false;

        return true;
    }

    @Override
    public void runWithEvent(final Event event) {
        final Shell shell = event.widget.getDisplay().getActiveShell();

        try {
            final URL location = m_featureControl.getLocation();
            if (location == null) {
                MessageDialog.openWarning(shell, getText(), Messages.getString("ImageBrowserOpenAction.0")); //$NON-NLS-1$
                return;
            }

            final File localFile = FileUtils.toFile(location);
            if (localFile != null)
                Program.launch(localFile.getAbsolutePath());
            else
                m_externalBrowser.openURL(location);
        } catch (final PartInitException e) {
            e.printStackTrace();
            ErrorDialog.openError(shell, getText(), Messages.getString("ImageBrowserOpenAction_1"), e.getStatus()); //$NON-NLS-1$
        }
    }
}