org.kalypso.ogc.gml.outline.handler.NodePropertiesHandler.java Source code

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Here is the source code for org.kalypso.ogc.gml.outline.handler.NodePropertiesHandler.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.outline.handler;

import org.eclipse.core.commands.AbstractHandler;
import org.eclipse.core.commands.ExecutionEvent;
import org.eclipse.core.commands.ExecutionException;
import org.eclipse.core.expressions.IEvaluationContext;
import org.eclipse.jface.preference.PreferenceDialog;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.ui.ISources;
import org.eclipse.ui.dialogs.PreferencesUtil;
import org.kalypso.ogc.gml.map.handlers.MapHandlerUtils;
import org.kalypso.ogc.gml.outline.nodes.IThemeNode;

/**
 * Opens the property dialog for a {@link org.kalypso.ogc.gml.IKalypsoTheme}.
 * 
 * @author Gernot Belger
 */
public class NodePropertiesHandler extends AbstractHandler {
    @Override
    public Object execute(final ExecutionEvent event) throws ExecutionException {
        final IEvaluationContext context = (IEvaluationContext) event.getApplicationContext();
        final Shell shell = (Shell) context.getVariable(ISources.ACTIVE_SHELL_NAME);
        final ISelection selection = (ISelection) context.getVariable(ISources.ACTIVE_CURRENT_SELECTION_NAME);
        final IThemeNode[] selectedNodes = MapHandlerUtils.getSelectedNodes(selection);

        if (selectedNodes.length != 1)
            throw new ExecutionException("Empty selection"); //$NON-NLS-1$

        final PreferenceDialog dialog = PreferencesUtil.createPropertyDialogOn(shell, selectedNodes[0], null, null,
                null);
        if (dialog == null)
            return null;

        dialog.open();

        return null;
    }
}