org.kalypso.kalypsomodel1d2d.ui.map.channeledit.SwitchProfileAction.java Source code

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Here is the source code for org.kalypso.kalypsomodel1d2d.ui.map.channeledit.SwitchProfileAction.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.kalypsomodel1d2d.ui.map.channeledit;

import java.beans.PropertyChangeEvent;
import java.beans.PropertyChangeListener;

import org.apache.commons.lang3.ArrayUtils;
import org.eclipse.jface.action.Action;
import org.eclipse.swt.widgets.Event;
import org.kalypso.kalypsomodel1d2d.ui.map.channeledit.editdata.ChannelMesh;
import org.kalypso.kalypsomodel1d2d.ui.map.channeledit.editdata.IProfileData;

/**
 * Swtiches between profiles in the profile view.
 *
 * @author Gernot Belger
 */
class SwitchProfileAction extends Action {
    private final ChannelEditData m_data;

    private final int m_offset;

    public SwitchProfileAction(final ChannelEditData data, final int offset) {
        m_data = data;
        m_offset = offset;

        m_data.addPropertyChangeListener(ChannelEditData.PROPERTY_ACTIVE_PROFILE, new PropertyChangeListener() {
            @Override
            public void propertyChange(final PropertyChangeEvent evt) {
                handleActiveProfileChanged();
            }
        });
    }

    protected void handleActiveProfileChanged() {
        final IProfileData nextProfile = findNextProfile();
        final boolean enabled = nextProfile != null;
        setEnabled(enabled);
    }

    @Override
    public void runWithEvent(final Event event) {
        final IProfileData nextProfile = findNextProfile();
        m_data.setActiveProfile(nextProfile);
    }

    private IProfileData findNextProfile() {
        final IProfileData activeProfile = m_data.getActiveProfile();
        if (activeProfile == null)
            return null;

        final ChannelMesh editData = m_data.getEditData();
        if (editData == null)
            return null;

        final IProfileData[] profiles = editData.getProfiles();
        final int index = ArrayUtils.indexOf(profiles, activeProfile);
        if (index == -1)
            return null;

        final int nextIndex = index + m_offset;
        if (nextIndex < 0 || nextIndex >= profiles.length)
            return null;

        return profiles[nextIndex];
    }
}