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/*******************************************************************************
* <copyright>
*
* Copyright (c) 2005, 2010 SAP AG.
* 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:
* Stefan Dimov - initial API, implementation and documentation
*
* </copyright>
*
*******************************************************************************/
package org.eclipse.jpt.jpadiagrameditor.ui.internal.util;
import java.util.Iterator;
import java.util.List;
import org.eclipse.emf.transaction.RecordingCommand;
import org.eclipse.emf.transaction.TransactionalEditingDomain;
import org.eclipse.emf.transaction.util.TransactionUtil;
import org.eclipse.graphiti.mm.algorithms.GraphicsAlgorithm;
import org.eclipse.graphiti.mm.algorithms.Text;
import org.eclipse.graphiti.mm.pictograms.ContainerShape;
import org.eclipse.graphiti.mm.pictograms.Shape;
import org.eclipse.graphiti.services.Graphiti;
import org.eclipse.jpt.jpadiagrameditor.ui.internal.util.JPAEditorConstants.ShapeType;
public class GraphicsUpdater {
private static final int PRIMARY_SHAPE_INDEX = 3;
private static final int RELATION_SHAPE_CONSTANT = 4;
private static final int BASIC_SHAPE_INDEX = 5;
public static int increaseCompartmentHeigth(ContainerShape containerShape,
int height) {
for(Shape shape : containerShape.getChildren()){
Iterator<GraphicsAlgorithm> iterator = shape.getGraphicsAlgorithm().getGraphicsAlgorithmChildren().iterator();
while(iterator.hasNext()){
if(iterator.next() instanceof Text)
height = height + JPAEditorConstants.ATTRIBUTES_PLACEMENT_STEP;
}
}
return height;
}
public static void updateContainer(ContainerShape containerShape,
int childrenSizeBefore, int containerHeightBefore){
int childrenSizeAfter = containerShape.getChildren().size();
int containerHeightAfter = 0;
if(childrenSizeBefore == 2){
containerHeightBefore = JPAEditorConstants.COMPARTMENT_MIN_HEIGHT + JPAEditorConstants.COMPARTMENT_BUTTOM_OFFSET;
}
containerHeightAfter = containerHeightBefore + (((childrenSizeAfter - childrenSizeBefore)/2)*JPAEditorConstants.ATTRIBUTES_PLACEMENT_STEP);
if(!isCollapsed(containerShape))
containerShape.getGraphicsAlgorithm().setHeight(containerHeightAfter);
else
containerShape.getGraphicsAlgorithm().setHeight(JPAEditorConstants.COMPARTMENT_MIN_HEIGHT);
}
public static void updateEntityShape(ContainerShape entityShape){
ContainerShape primaryShape = getPrimaryShape(entityShape);
ContainerShape relationShape = getRelationShape(entityShape);
ContainerShape basicShape = getBasicShape(entityShape);
primaryShape.setVisible(!isEmptyCompartment(primaryShape));
basicShape.setVisible(!isEmptyCompartment(basicShape));
relationShape.setVisible(!isEmptyCompartment(relationShape));
relationShape.getGraphicsAlgorithm().setY(getNextCompartmentY(primaryShape));
basicShape.getGraphicsAlgorithm().setY(getNextCompartmentY(relationShape));
}
private static boolean isEmptyCompartment(ContainerShape primaryShape) {
return primaryShape.getChildren().size() <= 2;
}
public static void updateEntityHeigth(ContainerShape entityShape){
ContainerShape primaryShape = GraphicsUpdater.getPrimaryShape(entityShape);
ContainerShape relationShape = GraphicsUpdater.getRelationShape(entityShape);
ContainerShape basicShape = GraphicsUpdater.getBasicShape(entityShape);
entityShape.getGraphicsAlgorithm().setHeight(JPAEditorConstants.ENTITY_MIN_HEIGHT +
primaryShape.getGraphicsAlgorithm().getHeight() + relationShape.getGraphicsAlgorithm().getHeight()
+ basicShape.getGraphicsAlgorithm().getHeight() + 2);
}
public static int getNextCompartmentY(ContainerShape compartmentShape){
if(isEmptyCompartment(compartmentShape))
return compartmentShape.getGraphicsAlgorithm().getY();
return compartmentShape.getGraphicsAlgorithm().getY() + compartmentShape.getGraphicsAlgorithm().getHeight();
}
public static ContainerShape getPrimaryShape(ContainerShape entityShape){
List<Shape> children = entityShape.getChildren();
if(children.size() < PRIMARY_SHAPE_INDEX+1)
return null;
GraphicsAlgorithm alg = children.get(PRIMARY_SHAPE_INDEX).getGraphicsAlgorithm();
ContainerShape primaryShape = (ContainerShape)Graphiti.getPeService().getActiveContainerPe(alg);
return primaryShape;
}
public static ContainerShape getCompartmentSeparatorShape(ContainerShape compartmentShape){
GraphicsAlgorithm alg = compartmentShape.getChildren().get(0).getGraphicsAlgorithm();
ContainerShape primarySeparatorShape = (ContainerShape) Graphiti.getPeService().getActiveContainerPe(alg);
return primarySeparatorShape;
}
public static ContainerShape getRelationShape(ContainerShape entityShape){
List<Shape> children = entityShape.getChildren();
if(children.size()<RELATION_SHAPE_CONSTANT+1)
return null;
GraphicsAlgorithm alg = children.get(RELATION_SHAPE_CONSTANT).getGraphicsAlgorithm();
ContainerShape relationShape = (ContainerShape) Graphiti.getPeService().getActiveContainerPe(alg);
return relationShape;
}
public static ContainerShape getBasicShape(ContainerShape entityShape){
List<Shape> children = entityShape.getChildren();
if(children.size() < BASIC_SHAPE_INDEX+1)
return null;
GraphicsAlgorithm alg = children.get(BASIC_SHAPE_INDEX).getGraphicsAlgorithm();
ContainerShape basicShape = (ContainerShape) Graphiti.getPeService().getActiveContainerPe(alg);
return basicShape;
}
public static boolean isCollapsed(ContainerShape compartmentShape) {
ContainerShape container = compartmentShape.getContainer();
String result = null;
if(compartmentShape.equals(GraphicsUpdater.getPrimaryShape(container)))
result = Graphiti.getPeService().getPropertyValue(container, JPAEditorConstants.PRIMARY_COLLAPSED);
else if(compartmentShape.equals(GraphicsUpdater.getBasicShape(container)))
result = Graphiti.getPeService().getPropertyValue(container, JPAEditorConstants.BASIC_COLLAPSED);
else if(compartmentShape.equals(GraphicsUpdater.getRelationShape(container)))
result = Graphiti.getPeService().getPropertyValue(container, JPAEditorConstants.RELATION_COLLAPSED);
if(Boolean.toString(true).equals(result))
return true;
return false;
}
/**
* @param compartmentShape
* @param collapsed
* @return true if successful
*/
public static boolean setCollapsed(ContainerShape compartmentShape, boolean collapsed) {
ContainerShape container = compartmentShape.getContainer();
if(compartmentShape.equals(GraphicsUpdater.getPrimaryShape(container))) {
Graphiti.getPeService().setPropertyValue(container, JPAEditorConstants.PRIMARY_COLLAPSED, Boolean.toString(collapsed));
return true;
}
else if(compartmentShape.equals(GraphicsUpdater.getBasicShape(container))) {
Graphiti.getPeService().setPropertyValue(container, JPAEditorConstants.BASIC_COLLAPSED, Boolean.toString(collapsed));
return true;
}
else if(compartmentShape.equals(GraphicsUpdater.getRelationShape(container))) {
Graphiti.getPeService().setPropertyValue(container, JPAEditorConstants.RELATION_COLLAPSED, Boolean.toString(collapsed));
return true;
}
return false;
}
public static void updateHeader(ContainerShape entityShape, final String newHeader) {
final Text txt = getHeaderText(entityShape);
if (txt == null)
return;
//if (!JPAEditorUtil.areHeadersEqual(txt.getValue(), newHeader)) {
if (!txt.getValue().equals(newHeader)) {
TransactionalEditingDomain ted = TransactionUtil.getEditingDomain(txt);
RecordingCommand rc = new RecordingCommand(ted) {
@Override
protected void doExecute() {
txt.setValue(newHeader);
}
};
ted.getCommandStack().execute(rc);
}
}
private static Text getHeaderText(ContainerShape entityShape) {
if(entityShape == null)
return null;
List<Shape> shapes = entityShape.getChildren();
Iterator<Shape> shIt = shapes.iterator();
Shape headerShape = null;
while (shIt.hasNext()) {
headerShape = shIt.next();
String shapeType = Graphiti.getPeService().getPropertyValue(headerShape, JPAEditorConstants.PROP_SHAPE_TYPE);
if (ShapeType.HEADER.toString().equals(shapeType))
break;
headerShape = null;
}
if (headerShape == null)
return null;
GraphicsAlgorithm ga = headerShape.getGraphicsAlgorithm();
if (ga == null)
return null;
if (ga.getGraphicsAlgorithmChildren().size() == 0)
return null;
Text txt = (Text)ga.getGraphicsAlgorithmChildren().get(0);
return txt;
}
}
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