org.kalypso.ui.editor.styleeditor.symbolizer.GeometryValue.java Source code

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Here is the source code for org.kalypso.ui.editor.styleeditor.symbolizer.GeometryValue.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.ui.editor.styleeditor.symbolizer;

import javax.xml.namespace.QName;

import org.apache.commons.lang3.StringUtils;
import org.eclipse.jface.viewers.ArrayContentProvider;
import org.eclipse.jface.viewers.ComboViewer;
import org.eclipse.jface.viewers.LabelProvider;
import org.kalypso.gmlschema.annotation.AnnotationUtilities;
import org.kalypso.gmlschema.annotation.IAnnotation;
import org.kalypso.gmlschema.feature.IFeatureType;
import org.kalypso.gmlschema.property.IPropertyType;
import org.kalypso.ui.editor.styleeditor.MessageBundle;
import org.kalypso.ui.editor.styleeditor.StyleEditorHelper;
import org.kalypso.ui.editor.styleeditor.binding.IStyleInput;
import org.kalypso.ui.editor.styleeditor.binding.InputWithContextObservableValue;
import org.kalypsodeegree.graphics.sld.Geometry;
import org.kalypsodeegree.graphics.sld.Symbolizer;
import org.kalypsodeegree_impl.filterencoding.PropertyName;
import org.kalypsodeegree_impl.graphics.sld.StyleFactory;

/**
 * @author Gernot Belger
 */
public class GeometryValue<S extends Symbolizer> extends InputWithContextObservableValue<S, QName> {
    static QName ELEMENT_NOT_SET = new QName(StringUtils.EMPTY);

    public GeometryValue(final IStyleInput<S> input) {
        super(input, QName.class);
    }

    @Override
    protected QName getValueFromData(final S data) {
        final Geometry geometry = data.getGeometry();
        if (geometry == null)
            return ELEMENT_NOT_SET;

        final PropertyName propertyName = geometry.getPropertyName();
        if (propertyName == null)
            return ELEMENT_NOT_SET;

        final IStyleInput<S> input = getSource();
        final IFeatureType ft = input.getFeatureType();
        final IPropertyType pt = StyleEditorHelper.getFeatureTypeProperty(ft, propertyName);
        if (pt == null)
            return ELEMENT_NOT_SET;

        return pt.getQName();
    }

    @Override
    protected void setValueToInput(final S data, final QName value) {
        if (value == null)
            data.setGeometry(null);
        else {
            final PropertyName propertyName = new PropertyName(value);
            final Geometry geometry = StyleFactory.createGeometry(propertyName);
            data.setGeometry(geometry);
        }
    }

    public void configureViewer(final ComboViewer viewer) {
        final IStyleInput<S> input = getSource();

        viewer.setContentProvider(new ArrayContentProvider());
        viewer.setLabelProvider(new LabelProvider() {
            @Override
            public String getText(final Object element) {
                if (element == ELEMENT_NOT_SET)
                    return MessageBundle.STYLE_EDITOR_FIELD_NOT_SET;

                if (element instanceof QName) {
                    final IFeatureType ft = input.getFeatureType();
                    final IPropertyType pt = ft.getProperty((QName) element);
                    return AnnotationUtilities.getAnnotation(pt.getAnnotation(), null, IAnnotation.ANNO_LABEL);
                }

                return super.getText(element);
            }
        });

        viewer.setInput(createInput(input));
    }

    private Object createInput(final IStyleInput<S> input) {
        // TODO: we should also descend into sub-features and show their geometry properties as well
        // Maybe instead, we should provide a more suited ui instead of a Combo

        final IFeatureType featureType = input.getFeatureType();
        if (featureType == null)
            return null;

        final IPropertyType[] geometryProperties = featureType.getAllGeometryProperties();
        final QName[] comboInput = new QName[geometryProperties.length + 1];
        comboInput[0] = ELEMENT_NOT_SET;
        for (int i = 0; i < geometryProperties.length; i++)
            comboInput[i + 1] = geometryProperties[i].getQName();

        return comboInput;
    }

}