/**
* Copyright (c) 2011 committers of YAKINDU 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:
* committers of YAKINDU - initial API and implementation
*
*/
package org.yakindu.base.gmf.runtime.highlighting;
import java.lang.reflect.Method;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import org.eclipse.draw2d.IFigure;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.gmf.runtime.diagram.ui.editparts.IGraphicalEditPart;
import org.eclipse.gmf.runtime.diagram.ui.editparts.IPrimaryEditPart;
import org.eclipse.gmf.runtime.diagram.ui.figures.BorderedNodeFigure;
import org.eclipse.gmf.runtime.diagram.ui.parts.IDiagramWorkbenchPart;
import org.eclipse.gmf.runtime.diagram.ui.resources.editor.parts.DiagramDocumentEditor;
import org.eclipse.gmf.runtime.gef.ui.figures.DefaultSizeNodeFigure;
import org.eclipse.swt.graphics.Color;
import org.eclipse.swt.widgets.Display;
import org.yakindu.base.gmf.runtime.util.EditPartUtils;
/**
*
* @author Alexander Nyssen
* @author Andreas Muelder
* @author Axel Terfloth
*
*/
public class HighlightingSupportAdapter implements IHighlightingSupport {
private class ColorMemento {
private final Color foregroundColor;
private final Color backgroundColor;
private final IFigure figure;
protected ColorMemento(IFigure figure) {
this.figure = figure;
this.foregroundColor = figure.getForegroundColor();
this.backgroundColor = figure.getBackgroundColor();
}
protected void restore() {
figure.setForegroundColor(foregroundColor);
figure.setBackgroundColor(backgroundColor);
}
}
private final Map<IFigure, ColorMemento> figureStates = new HashMap<IFigure, ColorMemento>();
private boolean locked = false;
private final IDiagramWorkbenchPart diagramWorkbenchPart;
private Map<EObject, IGraphicalEditPart> object2editPart = new HashMap<EObject, IGraphicalEditPart>();
public HighlightingSupportAdapter(IDiagramWorkbenchPart diagramWorkbenchPart) {
this.diagramWorkbenchPart = diagramWorkbenchPart;
}
private IGraphicalEditPart getEditPartForSemanticElement(EObject semanticElement) {
IGraphicalEditPart result = object2editPart.get(semanticElement);
if (result != null)
return result;
result = EditPartUtils.findEditPartForSemanticElement(
diagramWorkbenchPart.getDiagramGraphicalViewer().getRootEditPart(), semanticElement);
object2editPart.put(semanticElement, result);
return result;
}
private IFigure getTargetFigure(IGraphicalEditPart editPart) {
IFigure figure = editPart.getFigure();
if (figure instanceof BorderedNodeFigure) {
figure = (IFigure) figure.getChildren().get(0);
}
if (figure instanceof DefaultSizeNodeFigure) {
figure = (IFigure) figure.getChildren().get(0);
}
return figure;
}
public synchronized void lockEditor() {
if (locked) {
throw new IllegalStateException("Editor already locked!");
}
List<Action> singletonList = new ArrayList<>();
singletonList.add(new Action() {
@Override
public void execute(IHighlightingSupport hs) {
lockEditorInternal();
}
});
executeSync(singletonList);
}
private void lockEditorInternal() {
setSanityCheckEnablementState(false);
for (Object editPart : diagramWorkbenchPart.getDiagramGraphicalViewer().getEditPartRegistry().values()) {
if (editPart instanceof IPrimaryEditPart) {
IGraphicalEditPart graphicalEditPart = (IGraphicalEditPart) editPart;
IFigure figure = getTargetFigure(graphicalEditPart);
figureStates.put(figure, new ColorMemento(figure));
}
}
locked = true;
}
private void setSanityCheckEnablementState(boolean state) {
try {
Method enableMethod = DiagramDocumentEditor.class.getDeclaredMethod("enableSanityChecking",
new Class[] { boolean.class });
enableMethod.setAccessible(true);
enableMethod.invoke(diagramWorkbenchPart, new Object[] { state });
} catch (Exception e) {
e.printStackTrace();
}
}
public synchronized void releaseEditor() {
if (!locked) {
throw new IllegalStateException("Editor not locked!");
}
List<Action> singletonList = new ArrayList<>();
singletonList.add(new Action() {
@Override
public void execute(IHighlightingSupport hs) {
releaseInternal();
}
});
executeSync(singletonList);
}
protected void releaseInternal() {
// restore all elements still being highlighted
for (ColorMemento figureState : figureStates.values()) {
figureState.restore();
}
figureStates.clear();
diagramWorkbenchPart.getDiagramEditPart().enableEditMode();
setSanityCheckEnablementState(true);
object2editPart.clear();
locked = false;
}
public void highlight(List<? extends EObject> semanticElements, HighlightingParameters parameters) {
synchronized (semanticElements) {
for (EObject semanticElement : semanticElements) {
IGraphicalEditPart editPartForSemanticElement = getEditPartForSemanticElement(semanticElement);
if (editPartForSemanticElement != null) {
IFigure figure = getTargetFigure(editPartForSemanticElement);
if (parameters != null) {
figure.setForegroundColor(parameters.foregroundFadingColor);
figure.setBackgroundColor(parameters.backgroundFadingColor);
figure.invalidate();
} else {
ColorMemento memento = figureStates.get(figure);
if (memento != null)
memento.restore();
}
}
}
}
}
public boolean isLocked() {
return locked;
}
public void executeAsync(final List<Action> actions) {
if (actions != null) {
Display.getDefault().asyncExec(new Runnable() {
public void run() {
for (Action a : actions) {
a.execute(HighlightingSupportAdapter.this);
}
}
});
}
}
protected void executeSync(final List<Action> actions) {
if (actions != null) {
Display.getDefault().syncExec(new Runnable() {
public void run() {
for (Action a : actions) {
a.execute(HighlightingSupportAdapter.this);
}
}
});
}
}
}