/*
* JGrass - Free Open Source Java GIS http://www.jgrass.org
* (C) HydroloGIS - www.hydrologis.com
*
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* (http://www.eclipse.org/legal/epl-v10.html), and the HydroloGIS BSD
* License v1.0 (http://udig.refractions.net/files/hsd3-v10.html).
*/
package org.locationtech.udig.style.advanced.editorpages;
import java.util.List;
import org.locationtech.udig.catalog.IGeoResource;
import org.locationtech.udig.project.internal.Layer;
import org.locationtech.udig.project.internal.StyleBlackboard;
import org.locationtech.udig.style.internal.StyleLayer;
import org.locationtech.udig.style.sld.SLDContent;
import org.locationtech.udig.style.sld.editor.StyleEditorDialog;
import org.locationtech.udig.style.sld.editor.StyleEditorPage;
import org.locationtech.udig.ui.graphics.SLDs;
import org.eclipse.jface.dialogs.MessageDialog;
import org.eclipse.swt.SWT;
import org.eclipse.swt.custom.StackLayout;
import org.eclipse.swt.graphics.Point;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Label;
import org.geotools.data.FeatureSource;
import org.geotools.styling.FeatureTypeStyle;
import org.geotools.styling.PolygonSymbolizer;
import org.geotools.styling.Style;
import org.geotools.styling.Symbolizer;
import org.geotools.styling.visitor.DuplicatingStyleVisitor;
import org.locationtech.udig.style.advanced.internal.Messages;
import org.locationtech.udig.style.advanced.polygons.PolygonPropertiesEditor;
import org.locationtech.udig.style.advanced.utils.Utilities;
/**
* Style editor for simple polygons.
*
* @author Andrea Antonello (www.hydrologis.com)
*/
public class SimplePolygonEditorPage extends StyleEditorPage {
public static final String ID = "org.locationtech.udig.style.advanced.editorpages.SimplePolygonEditorPage"; //$NON-NLS-1$
private Style style = null;
private PolygonPropertiesEditor propertiesEditor;
private StackLayout stackLayout;
private Label noFeatureLabel;
private Composite mainComposite;
private Style oldStyleCopy;
public SimplePolygonEditorPage() {
super();
setSize(new Point(740, 500));
}
@Override
public void createPageContent( Composite parent ) {
mainComposite = new Composite(parent, SWT.NONE);
mainComposite.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true));
stackLayout = new StackLayout();
mainComposite.setLayout(stackLayout);
noFeatureLabel = new Label(mainComposite, SWT.NONE);
noFeatureLabel.setLayoutData(new GridData(SWT.BEGINNING, SWT.CENTER, false, false));
noFeatureLabel.setText(Messages.SimplePolygonEditorPage_0);
StyleLayer layer = getSelectedLayer();
IGeoResource resource = layer.getGeoResource();
if (resource.canResolve(FeatureSource.class)) {
StyleBlackboard styleBlackboard = layer.getStyleBlackboard();
style = (Style) styleBlackboard.get(SLDContent.ID);
if (style == null) {
style = Utilities.createDefaultPolygonStyle();
}
DuplicatingStyleVisitor dsv = new DuplicatingStyleVisitor();
dsv.visit(style);
oldStyleCopy = (Style) dsv.getCopy();
if (isPolygonStyle(style)) {
propertiesEditor = new PolygonPropertiesEditor(layer);
propertiesEditor.open(mainComposite, style);
stackLayout.topControl = propertiesEditor.getControl();
} else {
stackLayout.topControl = noFeatureLabel;
}
} else {
stackLayout.topControl = noFeatureLabel;
}
}
private boolean isPolygonStyle( Style style ) {
Symbolizer[] symbolizers = SLDs.symbolizers(style);
for( Symbolizer symbolizer : symbolizers ) {
if (symbolizer instanceof PolygonSymbolizer) {
return true;
}
}
return false;
}
@Override
public String getErrorMessage() {
return null;
}
@Override
public String getLabel() {
return null;
}
@Override
public void gotFocus() {
refresh();
}
@Override
public boolean performCancel() {
return true;
}
@Override
public void styleChanged( Object source ) {
}
public boolean okToLeave() {
return true;
}
public boolean performApply() {
applyStyle();
return true;
}
private void applyStyle() {
StyleLayer layer = getSelectedLayer();
Style newStyle = propertiesEditor.getStyle();
List<FeatureTypeStyle> featureTypeStyles = newStyle.featureTypeStyles();
int ftsNum = featureTypeStyles.size();
if (ftsNum < 1) {
MessageDialog.openWarning(getShell(), Messages.SimplePolygonEditorPage_1, Messages.SimplePolygonEditorPage_2);
style = oldStyleCopy;
setStyle(oldStyleCopy);
layer.revertAll();
layer.apply();
StyleEditorDialog dialog = (StyleEditorDialog) getContainer();
dialog.getCurrentPage().refresh();
return;
}
newStyle.setName(layer.getName());
setStyle(newStyle);
StyleBlackboard styleBlackboard = layer.getStyleBlackboard();
styleBlackboard.put(SLDContent.ID, newStyle);
}
public boolean performOk() {
applyStyle();
propertiesEditor.close();
return true;
}
@Override
public boolean isValid() {
return true;
}
public void refresh() {
Layer layer = getSelectedLayer();
IGeoResource resource = layer.getGeoResource();
if (!resource.canResolve(FeatureSource.class)) {
return;
}
StyleBlackboard styleBlackboard = layer.getStyleBlackboard();
style = (Style) styleBlackboard.get(SLDContent.ID);
if (style == null) {
style = Utilities.createDefaultPolygonStyle();
}
DuplicatingStyleVisitor dsv = new DuplicatingStyleVisitor();
dsv.visit(style);
oldStyleCopy = (Style) dsv.getCopy();
if (!isPolygonStyle(style)) {
stackLayout.topControl = noFeatureLabel;
} else {
stackLayout.topControl = propertiesEditor.getControl();
propertiesEditor.updateStyle(style);
}
mainComposite.layout();
}
}