eu.esdihumboldt.hale.ui.style.editors.MarkEditor.java Source code

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Here is the source code for eu.esdihumboldt.hale.ui.style.editors.MarkEditor.java

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/*
 * Copyright (c) 2012 Data Harmonisation Panel
 * 
 * All rights reserved. This program and the accompanying materials are made
 * available under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation, either version 3 of the License,
 * or (at your option) any later version.
 * 
 * You should have received a copy of the GNU Lesser General Public License
 * along with this distribution. If not, see <http://www.gnu.org/licenses/>.
 * 
 * Contributors:
 *     HUMBOLDT EU Integrated Project #030962
 *     Data Harmonisation Panel <http://www.dhpanel.eu>
 */
package eu.esdihumboldt.hale.ui.style.editors;

import org.eclipse.jface.resource.JFaceResources;
import org.eclipse.jface.viewers.ComboViewer;
import org.eclipse.jface.viewers.ISelectionChangedListener;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.jface.viewers.SelectionChangedEvent;
import org.eclipse.jface.viewers.StructuredSelection;
import org.eclipse.swt.SWT;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.layout.RowLayout;
import org.eclipse.swt.widgets.Combo;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.Label;
import org.geotools.styling.Mark;
import org.geotools.styling.StyleBuilder;

import eu.esdihumboldt.hale.ui.style.internal.Messages;

/**
 * Editor for {@link Mark}s
 * 
 * @author Simon Templer
 * @partner 01 / Fraunhofer Institute for Computer Graphics Research
 */
public class MarkEditor implements Editor<Mark> {

    /**
     * Mark names for {@link Mark} creation
     */
    private static final String[] MARKS = new String[] { StyleBuilder.MARK_X, StyleBuilder.MARK_ARROW,
            StyleBuilder.MARK_CIRCLE, StyleBuilder.MARK_CROSS, StyleBuilder.MARK_SQUARE, StyleBuilder.MARK_STAR,
            StyleBuilder.MARK_TRIANGLE };

    private static final StyleBuilder styleBuilder = new StyleBuilder();

    private final Composite page;

    private final StrokeEditor strokeEditor;

    private final FillEditor fillEditor;

    private final ComboViewer markView;

    private boolean changed = false;

    /**
     * Creates a {@link Mark} editor
     * 
     * @param parent the parent composite
     * @param mark the initial mark
     */
    public MarkEditor(Composite parent, Mark mark) {
        if (mark == null) {
            mark = styleBuilder.createMark(StyleBuilder.MARK_SQUARE);
        }

        page = new Composite(parent, SWT.NONE);

        RowLayout layout = new RowLayout(SWT.VERTICAL);
        page.setLayout(layout);

        // mark
        Composite markComp = new Composite(page, SWT.NONE);
        markComp.setLayout(new GridLayout(2, false));

        Label markLabel = new Label(markComp, SWT.NONE);
        markLabel.setLayoutData(new GridData(SWT.END, SWT.CENTER, false, false));
        markLabel.setFont(JFaceResources.getFontRegistry().getBold(JFaceResources.DEFAULT_FONT));
        markLabel.setText(Messages.MarkEditor_MarkLabel);

        Combo markCombo = new Combo(markComp, SWT.READ_ONLY);
        markCombo.setLayoutData(new GridData(SWT.BEGINNING, SWT.CENTER, false, false));
        markView = new ComboViewer(markCombo);
        markView.add(MARKS);
        markView.setSelection(new StructuredSelection(mark.getWellKnownName().toString()));
        markView.addSelectionChangedListener(new ISelectionChangedListener() {

            @Override
            public void selectionChanged(SelectionChangedEvent event) {
                changed = true;
            }
        });

        // stroke
        Label strokeLabel = new Label(page, SWT.NONE);
        strokeLabel.setFont(JFaceResources.getFontRegistry().getBold(JFaceResources.DEFAULT_FONT));
        strokeLabel.setText(Messages.MarkEditor_StrokeLabel);
        strokeEditor = new StrokeEditor(page, mark.getStroke());

        // fill
        Label fillLabel = new Label(page, SWT.NONE);
        fillLabel.setFont(JFaceResources.getFontRegistry().getBold(JFaceResources.DEFAULT_FONT));
        fillLabel.setText(Messages.MarkEditor_FillLabel);
        fillEditor = new FillEditor(page, mark.getFill());
    }

    /**
     * @see Editor#getControl()
     */
    @Override
    public Control getControl() {
        return page;
    }

    /**
     * @see Editor#getValue()
     */
    @Override
    public Mark getValue() {
        String markName = (String) ((IStructuredSelection) markView.getSelection()).getFirstElement();

        return styleBuilder.createMark(markName, fillEditor.getValue(), strokeEditor.getValue());
    }

    /**
     * @see Editor#isChanged()
     */
    @Override
    public boolean isChanged() {
        return changed || strokeEditor.isChanged() || fillEditor.isChanged();
    }

    /**
     * @see Editor#setValue(Object)
     */
    @Override
    public void setValue(Mark mark) {
        if (mark == null) {
            mark = styleBuilder.createMark(StyleBuilder.MARK_SQUARE);
        }

        markView.setSelection(new StructuredSelection(mark.getWellKnownName().toString()));
        strokeEditor.setValue(mark.getStroke());
        fillEditor.setValue(mark.getFill());
    }

}