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/*******************************************************************************
* Copyright (c) 2010 protos software gmbh (http://www.protos.de).
* 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:
* Thomas Schuetz and Henrik Rentz-Reichert (initial contribution)
*
*******************************************************************************/
package org.eclipse.etrice.ui.common.base.support;
import java.io.File;
import java.io.IOException;
import java.util.Collections;
import org.eclipse.core.resources.IFile;
import org.eclipse.core.resources.IFolder;
import org.eclipse.core.resources.IProject;
import org.eclipse.core.resources.ResourcesPlugin;
import org.eclipse.core.runtime.Path;
import org.eclipse.emf.common.command.Command;
import org.eclipse.emf.common.util.URI;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.emf.ecore.resource.Resource;
import org.eclipse.emf.ecore.resource.ResourceSet;
import org.eclipse.emf.ecore.util.EcoreUtil;
import org.eclipse.emf.transaction.TransactionalEditingDomain;
import org.eclipse.emf.transaction.impl.TransactionalEditingDomainImpl;
import org.eclipse.emf.transaction.util.TransactionUtil;
import org.eclipse.etrice.core.common.ui.linking.GlobalNonPlatformURIEditorOpener;
import org.eclipse.etrice.core.fsm.ui.FSMUiModule;
import org.eclipse.etrice.ui.common.base.UIBaseActivator;
import org.eclipse.etrice.ui.common.base.editor.DiagramEditorBase;
import org.eclipse.etrice.ui.common.base.preferences.UIBasePreferenceConstants;
import org.eclipse.graphiti.mm.pictograms.Diagram;
import org.eclipse.graphiti.services.Graphiti;
import org.eclipse.jface.preference.IPreferenceStore;
import org.eclipse.ui.IFileEditorInput;
import org.eclipse.ui.PartInitException;
import org.eclipse.ui.PlatformUI;
import org.eclipse.ui.part.FileEditorInput;
import org.eclipse.xtext.resource.XtextResourceSet;
import org.eclipse.xtext.ui.resource.IResourceSetProvider;
import com.google.inject.Inject;
import com.google.inject.Injector;
/**
* @author Henrik Rentz-Reichert
*
*/
public abstract class DiagramAccessBase {
public static final String DIAGRAMS_FOLDER_NAME = "diagrams";
@Inject
private IResourceSetProvider resourceSetProvider;
/**
*
*/
public DiagramAccessBase() {
super();
Injector injector = FSMUiModule.getInjector();
injector.injectMembers(this);
}
public Diagram getDiagram(EObject rootObject) {
Resource resource = rootObject.eResource();
if (resource==null)
return null;
URI uri = resource.getURI();
ResourceSet rs = newResourceSet(uri);
URI diagURI = null;
boolean exists = false;
if (uri.isPlatformResource()) {
uri = uri.trimSegments(1);
IFolder diagramFolder = null;
if (uri.segmentCount()==2) {
IProject project = ResourcesPlugin.getWorkspace().getRoot().getProject(uri.lastSegment());
diagramFolder = project.getFolder(DIAGRAMS_FOLDER_NAME);
}
else {
IFolder parentFolder = ResourcesPlugin.getWorkspace().getRoot().getFolder(new Path(uri.toPlatformString(true)));
diagramFolder = parentFolder.getFolder(DIAGRAMS_FOLDER_NAME);
}
IFile diagramFile = diagramFolder.getFile(getDigramFileName(rootObject));
diagURI = URI.createPlatformResourceURI(diagramFile.getFullPath().toString(), true);
exists = diagramFile.exists();
}
else {
File diagramFile = new File(uri.toFileString());
diagramFile = new File(diagramFile.getParent()
+File.separator+DIAGRAMS_FOLDER_NAME
+File.separator+getDigramFileName(rootObject));
diagURI = URI.createFileURI(diagramFile.getPath());
exists = diagramFile.exists();
}
if (exists) {
Resource diagRes = rs.getResource(diagURI, true);
if (diagRes.getContents().isEmpty())
return null;
if (diagRes.getContents().get(0) instanceof Diagram) {
Diagram diagram = (Diagram) diagRes.getContents().get(0);
updateDiagram(diagram, false);
return diagram;
}
}
else {
Resource diagRes = rs.createResource(diagURI);
IPreferenceStore store = UIBaseActivator.getDefault().getPreferenceStore();
boolean snap = store.getBoolean(UIBasePreferenceConstants.SNAP_TO_GRID);
boolean useGrid = store.getBoolean(UIBasePreferenceConstants.USE_GRID);
int horUnit = useGrid? store.getInt(UIBasePreferenceConstants.HOR_GRID_UNIT) : 0;
int verUnit = useGrid? store.getInt(UIBasePreferenceConstants.VER_GRID_UNIT) : 0;
Diagram diagram = Graphiti.getPeCreateService().createDiagram(
getDiagramTypeId(),
getDiagramName(rootObject),
horUnit,
verUnit,
snap);
diagRes.getContents().add(diagram);
populateDiagram(rootObject, diagram);
try {
diagRes.save(Collections.EMPTY_MAP);
} catch (IOException e) {
e.printStackTrace();
}
return diagram;
}
return null;
}
private ResourceSet newResourceSet(URI uri) {
ResourceSet rs;
if (uri.isPlatformResource()) {
IFile file = ResourcesPlugin.getWorkspace().getRoot().getFile(new Path(uri.toPlatformString(true)));
IProject project = file.getProject();
rs = resourceSetProvider.get(project);
}
else {
rs = new XtextResourceSet();
}
return rs;
}
private void populateDiagram(EObject rootObject, Diagram diagram) {
ResourceSet rs = newResourceSet(rootObject.eResource().getURI());
TransactionalEditingDomain editingDomain = TransactionUtil.getEditingDomain(rs);
if (editingDomain == null) {
// Not yet existing, create one
editingDomain = TransactionalEditingDomain.Factory.INSTANCE.createEditingDomain(rs);
}
// IMPORTANT STEP: this resolves the object and creates a new resource in the resource set
URI boUri = EcoreUtil.getURI(rootObject);
rootObject = editingDomain.getResourceSet().getEObject(boUri, true);
editingDomain.getCommandStack().execute(getInitialCommand(rootObject, diagram, editingDomain));
editingDomain.dispose();
}
/**
* @param diagram
*/
private void updateDiagram(Diagram diagram, boolean doSave) {
ResourceSet rs = diagram.eResource().getResourceSet();
TransactionalEditingDomain editingDomain = TransactionUtil.getEditingDomain(rs);
try {
if (editingDomain == null) {
// Not yet existing, create one and start a write transaction
editingDomain = TransactionalEditingDomain.Factory.INSTANCE.createEditingDomain(rs);
((TransactionalEditingDomainImpl)editingDomain).startTransaction(false, null);
}
Command updateCommand = getUpdateCommand(diagram, editingDomain);
if (updateCommand!=null) {
editingDomain.getCommandStack().execute(updateCommand);
if (doSave) {
try {
diagram.eResource().save(Collections.EMPTY_MAP);
} catch (IOException e) {
e.printStackTrace();
}
}
}
}
catch (InterruptedException e) {
}
editingDomain.dispose();
}
public DiagramEditorBase findDiagramEditor(EObject rootObject) {
IFileEditorInput input = getEditorInput(rootObject);
return (DiagramEditorBase) PlatformUI.getWorkbench().getActiveWorkbenchWindow().getActivePage().findEditor(input);
}
public DiagramEditorBase openDiagramEditor(EObject rootObject) {
IFileEditorInput input = getEditorInput(rootObject);
try {
return (DiagramEditorBase) PlatformUI.getWorkbench().getActiveWorkbenchWindow().getActivePage().openEditor(input, getEditorId());
} catch (PartInitException e) {
String error = "Error while opening diagram editor";
System.err.println(error);
}
return null;
}
private IFileEditorInput getEditorInput(EObject rootObject) {
Diagram diagram = getDiagram(rootObject);
URI uri = diagram.eResource().getURI();
String platformString = null;
if (uri.isPlatform()) {
platformString = uri.toPlatformString(true);
}
else {
uri = GlobalNonPlatformURIEditorOpener.getPlatformURI(uri);
platformString = uri.toPlatformString(true);
}
IFile file = ResourcesPlugin.getWorkspace().getRoot().getFile(new Path(platformString));
IFileEditorInput input = new FileEditorInput(file);
return input;
}
public abstract String getDiagramName(EObject rootObject);
abstract protected String getDigramFileName(EObject rootObject);
abstract protected String getDiagramTypeId();
abstract protected String getEditorId();
abstract protected Command getInitialCommand(EObject rootObject, Diagram diagram, TransactionalEditingDomain editingDomain);
abstract protected Command getUpdateCommand(Diagram diagram, TransactionalEditingDomain editingDomain);
}
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