/*******************************************************************************
* Copyright (c) 2000, 2005 IBM Corporation 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:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.gef.examples.logicdesigner.edit;
import java.beans.PropertyChangeEvent;
import java.util.ArrayList;
import java.util.List;
import org.eclipse.swt.SWT;
import org.eclipse.swt.accessibility.AccessibleEvent;
import org.eclipse.draw2d.Animation;
import org.eclipse.draw2d.AutomaticRouter;
import org.eclipse.draw2d.BendpointConnectionRouter;
import org.eclipse.draw2d.ConnectionAnchor;
import org.eclipse.draw2d.ConnectionLayer;
import org.eclipse.draw2d.FanRouter;
import org.eclipse.draw2d.Figure;
import org.eclipse.draw2d.FreeformLayer;
import org.eclipse.draw2d.FreeformLayout;
import org.eclipse.draw2d.IFigure;
import org.eclipse.draw2d.ManhattanConnectionRouter;
import org.eclipse.draw2d.MarginBorder;
import org.eclipse.draw2d.ShortestPathConnectionRouter;
import org.eclipse.draw2d.XYLayout;
import org.eclipse.gef.AccessibleEditPart;
import org.eclipse.gef.CompoundSnapToHelper;
import org.eclipse.gef.ConnectionEditPart;
import org.eclipse.gef.DragTracker;
import org.eclipse.gef.EditPolicy;
import org.eclipse.gef.LayerConstants;
import org.eclipse.gef.Request;
import org.eclipse.gef.SnapToGeometry;
import org.eclipse.gef.SnapToGrid;
import org.eclipse.gef.SnapToGuides;
import org.eclipse.gef.SnapToHelper;
import org.eclipse.gef.editpolicies.RootComponentEditPolicy;
import org.eclipse.gef.editpolicies.SnapFeedbackPolicy;
import org.eclipse.gef.requests.SelectionRequest;
import org.eclipse.gef.rulers.RulerProvider;
import org.eclipse.gef.tools.DeselectAllTracker;
import org.eclipse.gef.tools.MarqueeDragTracker;
import org.eclipse.gef.examples.logicdesigner.LogicMessages;
import org.eclipse.gef.examples.logicdesigner.model.LogicDiagram;
/**
* Holds all other LogicEditParts under this. It is
* activated by LogicEditorPart, to hold the entire
* model. It is sort of a blank board where all
* other EditParts get added.
*/
public class LogicDiagramEditPart
extends LogicContainerEditPart
implements LayerConstants
{
protected AccessibleEditPart createAccessible() {
return new AccessibleGraphicalEditPart(){
public void getName(AccessibleEvent e) {
e.result = LogicMessages.LogicDiagram_LabelText;
}
};
}
/**
* Installs EditPolicies specific to this.
*/
protected void createEditPolicies(){
super.createEditPolicies();
installEditPolicy(EditPolicy.NODE_ROLE, null);
installEditPolicy(EditPolicy.GRAPHICAL_NODE_ROLE, null);
installEditPolicy(EditPolicy.SELECTION_FEEDBACK_ROLE, null);
installEditPolicy(EditPolicy.COMPONENT_ROLE, new RootComponentEditPolicy());
installEditPolicy(EditPolicy.LAYOUT_ROLE, new LogicXYLayoutEditPolicy(
(XYLayout)getContentPane().getLayoutManager()));
installEditPolicy("Snap Feedback", new SnapFeedbackPolicy()); //$NON-NLS-1$
}
/**
* Returns a Figure to represent this.
*
* @return Figure.
*/
protected IFigure createFigure() {
Figure f = new FreeformLayer();
// f.setBorder(new GroupBoxBorder("Diagram"));
f.setLayoutManager(new FreeformLayout());
f.setBorder(new MarginBorder(5));
return f;
}
/**
* @see org.eclipse.core.runtime.IAdaptable#getAdapter(java.lang.Class)
*/
public Object getAdapter(Class adapter) {
if (adapter == SnapToHelper.class) {
List snapStrategies = new ArrayList();
Boolean val = (Boolean)getViewer().getProperty(RulerProvider.PROPERTY_RULER_VISIBILITY);
if (val != null && val.booleanValue())
snapStrategies.add(new SnapToGuides(this));
val = (Boolean)getViewer().getProperty(SnapToGeometry.PROPERTY_SNAP_ENABLED);
if (val != null && val.booleanValue())
snapStrategies.add(new SnapToGeometry(this));
val = (Boolean)getViewer().getProperty(SnapToGrid.PROPERTY_GRID_ENABLED);
if (val != null && val.booleanValue())
snapStrategies.add(new SnapToGrid(this));
if (snapStrategies.size() == 0)
return null;
if (snapStrategies.size() == 1)
return snapStrategies.get(0);
SnapToHelper ss[] = new SnapToHelper[snapStrategies.size()];
for (int i = 0; i < snapStrategies.size(); i++)
ss[i] = (SnapToHelper)snapStrategies.get(i);
return new CompoundSnapToHelper(ss);
}
return super.getAdapter(adapter);
}
public DragTracker getDragTracker(Request req){
if (req instanceof SelectionRequest
&& ((SelectionRequest)req).getLastButtonPressed() == 3)
return new DeselectAllTracker(this);
return new MarqueeDragTracker();
}
/**
* Returns <code>NULL</code> as it does not hold any connections.
*
* @return ConnectionAnchor
*/
public ConnectionAnchor getSourceConnectionAnchor(ConnectionEditPart editPart) {
return null;
}
/**
* Returns <code>NULL</code> as it does not hold any connections.
*
* @return ConnectionAnchor
*/
public ConnectionAnchor getSourceConnectionAnchor(int x, int y) {
return null;
}
/**
* Returns <code>NULL</code> as it does not hold any connections.
*
* @return ConnectionAnchor
*/
public ConnectionAnchor getTargetConnectionAnchor(ConnectionEditPart editPart) {
return null;
}
/**
* Returns <code>NULL</code> as it does not hold any connections.
*
* @return ConnectionAnchor
*/
public ConnectionAnchor getTargetConnectionAnchor(int x, int y) {
return null;
}
public void propertyChange(PropertyChangeEvent evt) {
if (LogicDiagram.ID_ROUTER.equals(evt.getPropertyName()))
refreshVisuals();
else
super.propertyChange(evt);
}
protected void refreshVisuals() {
Animation.markBegin();
ConnectionLayer cLayer = (ConnectionLayer) getLayer(CONNECTION_LAYER);
if ((getViewer().getControl().getStyle() & SWT.MIRRORED ) == 0)
cLayer.setAntialias(SWT.ON);
if (getLogicDiagram().getConnectionRouter().equals(LogicDiagram.ROUTER_MANUAL)) {
AutomaticRouter router = new FanRouter();
router.setNextRouter(new BendpointConnectionRouter());
cLayer.setConnectionRouter(router);
} else if (getLogicDiagram().getConnectionRouter().equals(LogicDiagram.ROUTER_MANHATTAN))
cLayer.setConnectionRouter(new ManhattanConnectionRouter());
else
cLayer.setConnectionRouter(new ShortestPathConnectionRouter(getFigure()));
Animation.run(400);
}
}