org.kalypso.ogc.sensor.view.actions.ViewWQRelationHandler.java Source code

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Here is the source code for org.kalypso.ogc.sensor.view.actions.ViewWQRelationHandler.java

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/*--------------- Kalypso-Header --------------------------------------------------------------------
    
 This file is part of kalypso.
 Copyright (C) 2004, 2005 by:
    
 Technical University Hamburg-Harburg (TUHH)
 Institute of River and coastal engineering
 Denickestr. 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.sensor.view.actions;

import java.io.StringReader;

import org.apache.commons.io.IOUtils;
import org.eclipse.core.commands.AbstractHandler;
import org.eclipse.core.commands.ExecutionEvent;
import org.eclipse.core.expressions.IEvaluationContext;
import org.eclipse.core.runtime.Status;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.ui.ISources;
import org.eclipse.ui.IWorkbenchPart;
import org.kalypso.ogc.sensor.IObservation;
import org.kalypso.ogc.sensor.metadata.ITimeseriesConstants;
import org.kalypso.ogc.sensor.timeseries.wq.WQException;
import org.kalypso.ogc.sensor.timeseries.wq.wqtable.WQTableFactory;
import org.kalypso.ogc.sensor.timeseries.wq.wqtable.WQTableSet;
import org.kalypso.ogc.sensor.view.ObservationChooser;
import org.kalypso.ogc.sensor.view.wq.WQRelationDialog;
import org.kalypso.ui.internal.i18n.Messages;
import org.xml.sax.InputSource;

/**
 * @author schlienger
 */
public class ViewWQRelationHandler extends AbstractHandler {
    /**
     * @see org.eclipse.core.commands.AbstractHandler#execute(org.eclipse.core.commands.ExecutionEvent)
     */
    @Override
    public Object execute(final ExecutionEvent event) {
        final IEvaluationContext context = (IEvaluationContext) event.getApplicationContext();
        final Shell shell = (Shell) context.getVariable(ISources.ACTIVE_SHELL_NAME);
        final IWorkbenchPart part = (IWorkbenchPart) context.getVariable(ISources.ACTIVE_PART_NAME);
        final ObservationChooser chooser = (ObservationChooser) part.getAdapter(ObservationChooser.class);

        final IObservation obs = chooser.isObservationSelected(chooser.getSelection());
        if (obs == null)
            return Status.OK_STATUS;

        final String propTable = obs.getMetadataList().getProperty(ITimeseriesConstants.MD_WQ_TABLE);
        if (propTable == null)
            return Status.OK_STATUS;

        final StringReader reader = new StringReader(propTable);
        try {
            final WQTableSet set = WQTableFactory.parse(new InputSource(reader));
            reader.close();

            final WQRelationDialog dlg = new WQRelationDialog(shell,
                    Messages.getString("org.kalypso.ogc.sensor.view.actions.ViewWQRelationHandler.0") //$NON-NLS-1$
                            + obs.getName(),
                    set);
            dlg.open();
        } catch (final WQException e) {
            e.printStackTrace();
        } finally {
            IOUtils.closeQuietly(reader);
        }

        return Status.OK_STATUS;
    }
}