featureide.fm.ui.editors.ConfigurationTreeViewer.java Source code

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Here is the source code for featureide.fm.ui.editors.ConfigurationTreeViewer.java

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/* FeatureIDE - An IDE to support feature-oriented software development
 * Copyright (C) 2005-2009  FeatureIDE Team, University of Magdeburg
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program. If not, see http://www.gnu.org/licenses/.
 *
 * See http://www.fosd.de/featureide/ for further information.
 */
package featureide.fm.ui.editors;

import java.beans.PropertyChangeListener;
import java.util.ArrayList;
import java.util.List;

import org.eclipse.jface.viewers.DoubleClickEvent;
import org.eclipse.jface.viewers.IDoubleClickListener;
import org.eclipse.jface.viewers.ITreeSelection;
import org.eclipse.jface.viewers.TreeViewer;
import org.eclipse.swt.widgets.Composite;

import featureide.fm.core.FeatureModel;
import featureide.fm.core.configuration.Configuration;
import featureide.fm.core.configuration.SelectableFeature;
import featureide.fm.core.configuration.Selection;
import featureide.fm.ui.editors.configuration.ConfigurationContentProvider;
import featureide.fm.ui.editors.configuration.ConfigurationLabelProvider;

/**
 * requires a configuration as input (via setInput) and additionally a feature
 * model with the constructor
 * 
 * @author Christian Kaestner
 */
public class ConfigurationTreeViewer extends TreeViewer {

    public ConfigurationTreeViewer(Composite parent, int style, FeatureModel model) {
        super(parent, style);
        setContentProvider(new ConfigurationContentProvider());
        setLabelProvider(new ConfigurationLabelProvider());
        addDoubleClickListener(listener);
    }

    private IDoubleClickListener listener = new IDoubleClickListener() {

        public void doubleClick(DoubleClickEvent event) {
            Object object = ((ITreeSelection) event.getSelection()).getFirstElement();
            if (object instanceof SelectableFeature) {
                final SelectableFeature feature = (SelectableFeature) object;
                if (feature.getAutomatic() == Selection.UNDEFINED) {
                    // set to the next value
                    if (feature.getManual() == Selection.UNDEFINED)
                        set(feature, Selection.SELECTED);
                    else if (feature.getManual() == Selection.SELECTED)
                        set(feature, Selection.UNSELECTED);
                    else
                        // case: unselected
                        set(feature, Selection.UNDEFINED);
                    fireChanged();
                    ConfigurationTreeViewer.this.refresh();
                }
            }
        }

        private void set(SelectableFeature feature, Selection selection) {
            assert getInput() instanceof Configuration;
            ((Configuration) getInput()).setManual(feature, selection);
        }

    };

    protected void fireChanged() {
        for (PropertyChangeListener l : listeners)
            l.propertyChange(null);
    }

    private final List<PropertyChangeListener> listeners = new ArrayList<PropertyChangeListener>();

    public void addChangeListener(PropertyChangeListener listener) {
        listeners.add(listener);
    }

    public void removeChangeListener(PropertyChangeListener listener) {
        listeners.remove(listener);
    }

}