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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.feature;
import java.util.Iterator;
import java.util.List;
import org.eclipse.draw2d.geometry.Point;
import org.eclipse.emf.transaction.RecordingCommand;
import org.eclipse.emf.transaction.TransactionalEditingDomain;
import org.eclipse.graphiti.datatypes.IDimension;
import org.eclipse.graphiti.features.IAddFeature;
import org.eclipse.graphiti.features.IFeatureProvider;
import org.eclipse.graphiti.features.context.IAddContext;
import org.eclipse.graphiti.features.context.IContext;
import org.eclipse.graphiti.features.context.ICustomContext;
import org.eclipse.graphiti.features.context.impl.AddContext;
import org.eclipse.graphiti.features.context.impl.CustomContext;
import org.eclipse.graphiti.features.custom.AbstractCustomFeature;
import org.eclipse.graphiti.mm.pictograms.ContainerShape;
import org.eclipse.graphiti.mm.pictograms.Diagram;
import org.eclipse.graphiti.mm.pictograms.PictogramElement;
import org.eclipse.graphiti.mm.pictograms.Shape;
import org.eclipse.jpt.jpa.core.JpaProject;
import org.eclipse.jpt.jpa.core.MappingKeys;
import org.eclipse.jpt.jpa.core.context.java.JavaPersistentType;
import org.eclipse.jpt.jpa.core.context.persistence.ClassRef;
import org.eclipse.jpt.jpa.core.context.persistence.PersistenceUnit;
import org.eclipse.jpt.jpadiagrameditor.ui.internal.modelintegration.util.ModelIntegrationUtil;
import org.eclipse.jpt.jpadiagrameditor.ui.internal.util.JPAEditorConstants;
public class AddAllEntitiesFeature extends AbstractCustomFeature implements IAddFeature {
int[] lowerEdges = new int[200];
int numInARow;
private final static int DIST_FROM_EDGE_H = 50;
private final static int DIST_FROM_EDGE_V = 50;
private final static int DIST_H = 100;
private final static int DIST_V = 100;
public AddAllEntitiesFeature(IFeatureProvider fp) {
super(fp);
}
public boolean isAvailable(IContext ctx) {
return true;
}
public boolean canExecute(ICustomContext context) {
return true;
}
public void execute(ICustomContext context) {
Diagram d = getDiagram();
JpaProject project = getTargetJPAProject();
PersistenceUnit unit = project.getRootContextNode().getPersistenceXml().getPersistence().persistenceUnits().next();
Point lowestRightestPointOfExistingDiagram = getLowestRightestPoint(d);
for (int i = 0; i < 200; i++) {
lowerEdges[i] = lowestRightestPointOfExistingDiagram.y +
(((i % 2 == 0) ? 1 : 2) *
((lowestRightestPointOfExistingDiagram.y == 0) ?
DIST_FROM_EDGE_V :
DIST_V));
}
IDimension dim = getFeatureProvider().getDiagramTypeProvider().getDiagramEditor().getCurrentSize();
int dWidth = dim.getWidth();
numInARow = (dWidth - DIST_FROM_EDGE_H - 20 + JPAEditorConstants.ENTITY_WIDTH)/(JPAEditorConstants.ENTITY_WIDTH + DIST_H);
numInARow = (numInARow > 0) ? numInARow : 1;
lowerEdges[0] = lowestRightestPointOfExistingDiagram.y + ((lowestRightestPointOfExistingDiagram.y == 0) ? DIST_FROM_EDGE_V : DIST_V);
for (Iterator<ClassRef> classRefs = unit.classRefs(); classRefs.hasNext();) {
ClassRef classRef = classRefs.next();
if (classRef.getJavaPersistentType() != null) { // null if
JavaPersistentType jpt = classRef.getJavaPersistentType();
if (jpt.getMappingKey() == MappingKeys.ENTITY_TYPE_MAPPING_KEY) {
PictogramElement pe = getFeatureProvider().getPictogramElementForBusinessObject(jpt);
if (pe != null)
continue;
final AddContext ctx = new AddContext();
ctx.setTargetContainer(d);
ctx.setNewObject(jpt);
IndexAndLowerEdge ie = getMinLowerEdge();
int x = DIST_FROM_EDGE_H + ie.index * (JPAEditorConstants.ENTITY_WIDTH + DIST_H);
ctx.setLocation(x, ie.lowerEdge);
final AddJPAEntityFeature ft = new AddJPAEntityFeature(getFeatureProvider());
final Diagram targetDiagram = (Diagram) ctx.getTargetContainer();
TransactionalEditingDomain ted = ModelIntegrationUtil.getTransactionalEditingDomain(targetDiagram);
ted.getCommandStack().execute(new RecordingCommand(ted) {
@Override
protected void doExecute() {
ft.add(ctx);
}
});
ContainerShape entityShape = (ContainerShape)getFeatureProvider().getPictogramElementForBusinessObject(jpt);
lowerEdges[ie.index] = entityShape.getGraphicsAlgorithm().getY() + entityShape.getGraphicsAlgorithm().getHeight() + DIST_V;
}
}
}
}
private IndexAndLowerEdge getMinLowerEdge() {
IndexAndLowerEdge res = new IndexAndLowerEdge();
res.lowerEdge = 10000000;
for (int i = 0; i < numInARow; i++) {
if (lowerEdges[i] < res.lowerEdge) {
res.lowerEdge = lowerEdges[i];
res.index = i;
}
}
return res;
}
private JpaProject getTargetJPAProject() {
return ModelIntegrationUtil.getProjectByDiagram(getDiagram());
}
public static Point getLowestRightestPoint(Diagram d) {
List<Shape> shapes = d.getChildren();
Iterator<Shape> it = shapes.iterator();
int x = 0;
int y = 0;
while (it.hasNext()) {
Shape sh = it.next();
int rightEdge = sh.getGraphicsAlgorithm().getX() +
sh.getGraphicsAlgorithm().getWidth();
x = Math.max(x, rightEdge);
int lowerEdge = sh.getGraphicsAlgorithm().getY() +
sh.getGraphicsAlgorithm().getHeight();
y = Math.max(y, lowerEdge);
}
x = Math.max(x, 3 * (DIST_H + JPAEditorConstants.ENTITY_WIDTH));
return new Point(x, y);
}
public PictogramElement add(IAddContext context) {
this.execute(new CustomContext());
return null;
}
public boolean canAdd(IAddContext context) {
return true;
}
private class IndexAndLowerEdge {
int index;
int lowerEdge;
}
}
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