//------------------------------------------------------------------------------
// Copyright (c) 2005, 2006 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 implementation
//------------------------------------------------------------------------------
package org.eclipse.epf.authoring.gef.edit;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Iterator;
import java.util.List;
import org.eclipse.draw2d.Figure;
import org.eclipse.draw2d.FreeformLayer;
import org.eclipse.draw2d.FreeformLayout;
import org.eclipse.draw2d.IFigure;
import org.eclipse.draw2d.MarginBorder;
import org.eclipse.draw2d.PolylineConnection;
import org.eclipse.draw2d.geometry.Point;
import org.eclipse.draw2d.geometry.PointList;
import org.eclipse.draw2d.geometry.Rectangle;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.epf.authoring.gef.commands.ChangeBoundsCommand;
import org.eclipse.epf.authoring.gef.edit.policies.DiagramLayoutEditPolicy;
import org.eclipse.epf.authoring.ui.AuthoringUIPlugin;
import org.eclipse.epf.diagram.model.Diagram;
import org.eclipse.epf.diagram.model.Link;
import org.eclipse.epf.diagram.model.Node;
import org.eclipse.epf.diagram.model.NodeContainer;
import org.eclipse.epf.library.edit.util.TngUtil;
import org.eclipse.gef.EditPart;
import org.eclipse.gef.EditPolicy;
import org.eclipse.gef.GraphicalEditPart;
import org.eclipse.gef.editpolicies.RootComponentEditPolicy;
/**
* Provides EditPart for Diagram. Handles the basic layout mechanism
* if the children location is not set in the diagram.
*
* @author Phong Nguyen Le
* @author skannoor
* @since 1.0
*/
public class DiagramEditPart extends NodeContainerEditPart {
Point cachedPoint = new Point(-1, -1);
protected boolean debug;
private boolean markDirty = false;
static int cachedWidth = 10;
static int cachedHeight = 10;
public DiagramEditPart(Diagram model) {
super(model);
debug = AuthoringUIPlugin.getDefault().isDebugging();
}
protected IFigure createFigure() {
Figure f = new FreeformLayer() {
protected void layout() {
if (hasMisplacedChildren()) {
resetChildrenLocations();
}
super.layout();
}
};
f.setBorder(new MarginBorder(20));
f.setLayoutManager(new FreeformLayout());
return f;
}
protected void resetChildrenLocations() {
int y = 10;
final int spacing = 40;
int occupied = 0;
int xelements = 0;
int x = 10;
boolean locked = TngUtil.isLocked((EObject)((Diagram)getModel()).getObject());
for (Iterator iter = getChildren().iterator(); iter.hasNext();) {
Object child = iter.next();
if (child instanceof GraphicalEditPart) {
GraphicalEditPart part = (GraphicalEditPart) child;
int width = part.getRoot().getViewer().getControl().getBounds().width;
if (part.getModel() instanceof Node) {
Node node = (Node) part.getModel();
Point p = node.getLocation().getCopy();
if (p == null || p.x == -1) {
if (x + part.getFigure().getPreferredSize().width > width) {
y = cachedPoint.y + cachedHeight + spacing;
xelements = 0;
x = 10;
cachedPoint.x = -1;
occupied = 0;
}
if (cachedPoint.x != -1) {
x = cachedPoint.x + cachedWidth + spacing;
}
++xelements;
if (p == null) {
p = new Point(-1, -1);
}
p.x = x;
p.y = y;
//node.setLocation(p);
//On opening a AD diagram, editor should be marked dirty.
//If diagram is not saved, cannot be browsed. Forcing to save the diagram once.
if (!locked && ((Diagram) getModel()).isNew()
&& !((Diagram) getModel()).isReadOnly()
&& markDirty) {
ChangeBoundsCommand cbc = new ChangeBoundsCommand(node, p, part.getFigure()
.getPreferredSize().width);
getViewer().getEditDomain().getCommandStack()
.execute(cbc);
} else {
// If Plugin is Locked: Do auto-layout and donot
// save to model.
node.setLocation(p);
}
cachedPoint = p;
cachedWidth = part.getFigure().getPreferredSize().width;
cachedHeight = part.getFigure().getPreferredSize().height;
if (debug) {
System.out
.println("Point : " + new Point(x, y).toString()); //$NON-NLS-1$
System.out
.println("Cached : width: " + cachedWidth + " Height : " + cachedHeight); //$NON-NLS-1$ //$NON-NLS-2$
}
occupied += x;
}
}
}
}
}
protected boolean hasMisplacedChildren() {
for (Iterator iter = getChildren().iterator(); iter.hasNext();) {
Object child = iter.next();
if (child instanceof EditPart) {
Object model = ((EditPart) child).getModel();
if (model instanceof Node) {
Node node = (Node) model;
Point p = node.getLocation();
if (p == null || p.x == -1){
return true;
}
}
}
}
return false;
}
protected void createEditPolicies() {
installEditPolicy(EditPolicy.COMPONENT_ROLE,
new RootComponentEditPolicy());
installEditPolicy(EditPolicy.CONTAINER_ROLE,
new DiagramLayoutEditPolicy());
}
/**
* @see org.eclipse.epf.authoring.gef.edit.NodeContainerEditPart#addPartToEdit(Collection,
* Object)
*/
protected void addPartToEdit(Collection partsToEdit, Object node) {
if (node instanceof NodeContainer) {
NodeContainerEditPart editPart = (NodeContainerEditPart) findChildByModel(node);
for (Iterator iter = ((NodeContainer) node).getNodes().iterator(); iter
.hasNext();) {
editPart.addPartToEdit(partsToEdit, iter.next());
}
} else {
super.addPartToEdit(partsToEdit, node);
}
}
/**
* Moves complete diagram children to given delta.
* @param int (X-axis delta)
* @param int (Y-axis delta)
*
*/
public void moveFigure(int moveX, int moveY) {
for (Iterator iter = this.getChildren().iterator(); iter.hasNext();) {
Object child = iter.next();
if (child instanceof GraphicalEditPart) {
GraphicalEditPart part = (GraphicalEditPart) child;
Rectangle bounds = part.getFigure().getBounds();
Rectangle r = new Rectangle(new Point(bounds.x + moveX,
bounds.y + moveY), bounds.getSize());
// also need to move the bend points
List list = part.getSourceConnections();
for (Iterator itor = list.iterator(); itor.hasNext();) {
LinkEditPart linkpart = (LinkEditPart) itor.next();
Link link = (Link) linkpart.getModel();
if (link.getBendpoints().size() > 0) {
PointList plist = ((PolylineConnection) linkpart
.getFigure()).getPoints();
List points = new ArrayList();
for (int i = 1; i < plist.size() - 1; i++) {
Point p = plist.getPoint(i);
p = p.translate(new Point(moveX, moveY));
org.eclipse.draw2d.AbsoluteBendpoint bp = new org.eclipse.draw2d.AbsoluteBendpoint(
p);
points.add(bp);
}
linkpart.getConnectionFigure().setRoutingConstraint(
points);
}
}
this.setLayoutConstraint(part, part.getFigure(), r);
} else {
// System.out.println("Part not moved: " + child); //$NON-NLS-1$
}
}
}
/**
* On opening a diagram, editor should be marked dirty.
* Invoker of DiagramEditPart should explicitly set the flag to mark editor dirty
* or not. Withou handling this will cause browsing perspective in consistent.
* For defect: https://bugs.eclipse.org/bugs/show_bug.cgi?id=156029
*/
public void markDirty(boolean markDirty){
this.markDirty = markDirty;
}
}