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/*****************************************************************************
* Copyright (c) 2017 EclipseSource and others.
*
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Camille Letavernier (EclipseSource) - Initial API and implementation
*
*****************************************************************************/
package org.eclipse.papyrus.infra.gmfdiag.css.engine;
import org.eclipse.papyrus.infra.architecture.representation.PapyrusRepresentationKind;
import org.eclipse.papyrus.infra.gmfdiag.css.notation.CSSDiagram;
import org.eclipse.papyrus.infra.gmfdiag.css.stylesheets.StyleSheet;
import org.eclipse.papyrus.infra.gmfdiag.css.stylesheets.StyleSheetReference;
import org.eclipse.papyrus.infra.gmfdiag.css.stylesheets.StylesheetsFactory;
import org.eclipse.papyrus.infra.gmfdiag.representation.PapyrusDiagram;
import org.eclipse.papyrus.infra.viewpoints.policy.ViewPrototype;
/**
* CSSEngine for stylesheets contributed via the architecture context ({@link PapyrusDiagram#getCustomStyle()}).
*
* Although it is manipulating the Diagram, it has a slightly lower priority than the {@link DiagramCSSEngine},
* which contains user-defined stylesheets.
*
* @since 2.2
*/
//Bug 519412: Viewpoint Stylesheets have a very high priority
public class ViewpointCSSEngine extends ExtendedCSSEngineImpl {
private CSSDiagram diagram;
/**
* Constructor.
*
* @param parent
* @param diagram
*/
public ViewpointCSSEngine(ExtendedCSSEngine parent, CSSDiagram diagram) {
super(parent);
this.diagram = diagram;
}
/**
* @see org.eclipse.papyrus.infra.gmfdiag.css.engine.DiagramCSSEngine#reloadStyleSheets()
*
*/
@Override
protected void reloadStyleSheets() {
styleSheets.clear();
StyleSheet css = getViewpointDefinedStylesheet();
if (css != null) {
styleSheets.add(css);
}
}
private StyleSheet getViewpointDefinedStylesheet() {
ViewPrototype proto = ViewPrototype.get(diagram);
if (proto == null) {
return null;
}
PapyrusRepresentationKind conf = proto.getRepresentationKind();
if (conf == null || !(conf instanceof PapyrusDiagram)) {
return null;
}
String path = ((PapyrusDiagram) conf).getCustomStyle();
if (path == null || path.isEmpty()) {
return null;
}
StyleSheetReference ref = StylesheetsFactory.eINSTANCE.createStyleSheetReference();
ref.setPath(path);
return ref;
}
/**
* @see org.eclipse.papyrus.infra.gmfdiag.css.engine.ExtendedCSSEngine#getCascadeScope()
*
* @return
*/
@Override
public CascadeScope getCascadeScope() {
return CascadeScope.VIEWPOINT;
}
}
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