/*******************************************************************************
* Copyright (c) 2012 VMware, Inc.
* 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:
* VMware, Inc. - initial API and implementation
*******************************************************************************/
package org.springframework.ide.eclipse.config.graph.parts;
import org.eclipse.draw2d.IFigure;
import org.eclipse.draw2d.LayoutManager;
import org.eclipse.draw2d.geometry.Dimension;
import org.eclipse.draw2d.geometry.Rectangle;
import org.eclipse.gef.EditPolicy;
import org.springframework.ide.eclipse.config.graph.policies.GraphXYLayoutPolicy;
import org.springframework.ide.eclipse.config.graph.policies.StructuredActivityLayoutEditPolicy;
/**
* @author Leo Dos Santos
* @author Christian Dupuis
*/
public class DelegatingLayoutManager implements LayoutManager {
private final ActivityDiagramPart diagram;
private LayoutManager activeLayoutManager;
private final GraphLayoutManager graphLayoutManager;
private final GraphXYLayout xyLayoutManager;
DelegatingLayoutManager(ActivityDiagramPart diagram) {
this.diagram = diagram;
graphLayoutManager = new GraphLayoutManager(diagram, diagram.getDirection());
xyLayoutManager = new GraphXYLayout(diagram, diagram.getDirection());
activeLayoutManager = graphLayoutManager;
}
public LayoutManager getActiveLayoutManager() {
return activeLayoutManager;
}
public Object getConstraint(IFigure figure) {
return activeLayoutManager.getConstraint(figure);
}
public Dimension getMinimumSize(IFigure figure, int wHint, int hHint) {
return activeLayoutManager.getMinimumSize(figure, wHint, hHint);
}
public Dimension getPreferredSize(IFigure figure, int wHint, int hHint) {
return activeLayoutManager.getPreferredSize(figure, wHint, hHint);
}
public void invalidate() {
activeLayoutManager.invalidate();
}
public void layout(IFigure figure) {
if (diagram.isManualLayout()) {
if (diagram.isFirstManualLayout()) {
setLayoutManager(figure, graphLayoutManager);
activeLayoutManager.layout(figure);
}
diagram.setBoundsOnFigure(true);
setLayoutManager(figure, xyLayoutManager);
activeLayoutManager.layout(figure);
}
else {
setLayoutManager(figure, graphLayoutManager);
activeLayoutManager.layout(figure);
}
}
public void remove(IFigure figure) {
activeLayoutManager.remove(figure);
}
public void setConstraint(IFigure figure, Object constraint) {
activeLayoutManager.setConstraint(figure, constraint);
}
public void setLayoutManager(IFigure figure, LayoutManager layoutManager) {
figure.setLayoutManager(layoutManager);
this.activeLayoutManager = layoutManager;
if (layoutManager == xyLayoutManager) {
diagram.installEditPolicy(EditPolicy.LAYOUT_ROLE, new GraphXYLayoutPolicy());
}
else {
diagram.installEditPolicy(EditPolicy.LAYOUT_ROLE, new StructuredActivityLayoutEditPolicy());
}
}
public void setXYLayoutConstraint(IFigure figure, Rectangle constraint) {
xyLayoutManager.setConstraint(figure, constraint);
}
}