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/*****************************************************************************
* Copyright (c) 2012, 2017 CEA LIST, Christian W. Damus, and others.
*
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License 2.0
* which accompanies this distribution, and is available at
* https://www.eclipse.org/legal/epl-2.0/
*
* SPDX-License-Identifier: EPL-2.0
*
* Contributors:
* Camille Letavernier (CEA LIST) camille.letavernier@cea.fr - Initial API and implementation
* Christian W. Damus (CEA) - support adapter instead of custom resource impl for CSS (CDO)
* Christian W. Damus - bugs 433206, 464443, 436665
* Camille Letavernier (EclipseSource) - Bug 519412
*
*****************************************************************************/
package org.eclipse.papyrus.infra.gmfdiag.css.notation;
import java.util.LinkedList;
import java.util.List;
import org.eclipse.emf.ecore.EClass;
import org.eclipse.emf.ecore.resource.Resource;
import org.eclipse.gmf.runtime.notation.EObjectListValueStyle;
import org.eclipse.gmf.runtime.notation.NamedStyle;
import org.eclipse.gmf.runtime.notation.NotationPackage;
import org.eclipse.gmf.runtime.notation.Style;
import org.eclipse.gmf.runtime.notation.impl.DiagramImpl;
import org.eclipse.papyrus.infra.gmfdiag.css.engine.DiagramCSSEngine;
import org.eclipse.papyrus.infra.gmfdiag.css.engine.ExtendedCSSEngine;
import org.eclipse.papyrus.infra.gmfdiag.css.engine.ViewpointCSSEngine;
import org.eclipse.papyrus.infra.gmfdiag.css.resource.CSSNotationResource;
import org.eclipse.papyrus.infra.gmfdiag.css.style.CSSView;
import org.eclipse.papyrus.infra.gmfdiag.css.style.impl.CSSViewDelegate;
import org.eclipse.papyrus.infra.gmfdiag.css.stylesheets.StyleSheet;
/**
* Default implementation for CSSDiagram
*
* @author Camille letavernier
*/
@SuppressWarnings("restriction")
public class CSSDiagramImpl extends DiagramImpl implements CSSDiagram, CSSView.Internal {
protected ExtendedCSSEngine engine;
private ExtendedCSSEngine viewpointEngine;
private CSSView cssView;
@Override
public ExtendedCSSEngine getEngine() {
if (engine == null) {
ExtendedCSSEngine modelEngine = getModelEngine();
viewpointEngine = new ViewpointCSSEngine(modelEngine, this);
engine = createEngine(viewpointEngine);
}
return engine;
}
/**
* Create the DiagramCSS
* @param viewpointCSSEngine
* @return
*/
protected ExtendedCSSEngine createEngine(ExtendedCSSEngine viewpointCSSEngine) {
return new DiagramCSSEngine(viewpointEngine, this);
}
@Override
public void resetCSS() {
if (engine != null) {
cssView = null;
engine.dispose();
engine = null;
viewpointEngine.dispose();
viewpointEngine = null;
// And walk our contents to make all views forget their engine
eAllContents().forEachRemaining(o -> {
if (o instanceof CSSView.Internal) {
((CSSView.Internal) o).resetCSS();
}
});
}
}
@Override
protected void eSetDirectResource(Resource.Internal resource) {
Resource.Internal oldResource = eInternalResource();
super.eSetDirectResource(resource);
if (oldResource != resource) {
// My engine is now invalid because my resource is different than before,
// which makes its parent engine is obsolete
resetCSS();
}
}
protected ExtendedCSSEngine getModelEngine() {
Resource resource = eResource();
return (resource == null) ? null : CSSNotationResource.getEngine(resource);
}
@Override
public List<StyleSheet> getStyleSheets() {
List<StyleSheet> result = new LinkedList<>();
for (Object styleObject : getStyles()) {
if (styleObject instanceof NamedStyle) {
NamedStyle style = (NamedStyle) styleObject;
if (CSSStyles.CSS_DIAGRAM_STYLESHEETS_KEY.equals(style.getName())) {
if (style instanceof EObjectListValueStyle) {
EObjectListValueStyle stylesheetsStyle = (EObjectListValueStyle) style;
for (Object eObjectValue : stylesheetsStyle.getEObjectListValue()) {
if (eObjectValue instanceof StyleSheet) {
result.add((StyleSheet) eObjectValue);
}
}
}
}
}
}
return result;
}
protected CSSView getCSSView() {
if (cssView == null) {
cssView = new CSSViewDelegate(this, getEngine());
}
return cssView;
}
// //////////////////////////////////
// Implements the isVisible method //
// //////////////////////////////////
@Override
public boolean isVisible() {
// return super.isVisible();
return isCSSVisible();
}
@Override
public boolean isCSSVisible() {
boolean value = super.isVisible();
if (ForceValueHelper.isSet(this, NotationPackage.eINSTANCE.getView_Visible(), value)) {
return value;
} else {
return getCSSView().isCSSVisible();
}
}
// //////////////////////////////////////
// Implements the getNamedStyle method //
// //////////////////////////////////////
@Override
public NamedStyle getNamedStyle(EClass eClass, String name) {
return getCSSNamedStyle(eClass, name);
}
@Override
public NamedStyle getCSSNamedStyle(EClass eClass, String name) {
NamedStyle userStyle = super.getNamedStyle(eClass, name);
if (userStyle != null) {
return userStyle;
}
return getCSSView().getCSSNamedStyle(eClass, name);
}
// /////////////////////////////////
// Implements the getStyle method //
// /////////////////////////////////
@Override
public Style getStyle(EClass eClass) {
return getCSSStyle(eClass);
}
@Override
public Style getCSSStyle(EClass eClass) {
Style userStyle = super.getStyle(eClass);
if (userStyle != null) {
return userStyle;
}
return getCSSView().getCSSStyle(eClass);
}
}
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