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/*******************************************************************************
* Copyright (c) 2010 BestSolution.at 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:
* Tom Schindl <tom.schindl@bestsolution.at> - initial API and implementation
******************************************************************************/
package org.eclipse.e4.internal.tools.wizards.model;
import java.util.HashMap;
import java.util.Map;
import org.eclipse.core.resources.IContainer;
import org.eclipse.core.resources.IFile;
import org.eclipse.core.resources.IResource;
import org.eclipse.core.resources.IWorkspaceRoot;
import org.eclipse.core.resources.ResourcesPlugin;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.core.runtime.Path;
import org.eclipse.core.runtime.Status;
import org.eclipse.e4.ui.model.application.MApplicationElement;
import org.eclipse.e4.ui.model.fragment.MModelFragment;
import org.eclipse.e4.ui.model.fragment.MModelFragments;
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.resource.impl.ResourceSetImpl;
import org.eclipse.emf.ecore.util.EcoreUtil;
import org.eclipse.jface.dialogs.MessageDialog;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.jface.viewers.StructuredSelection;
import org.eclipse.jface.wizard.Wizard;
import org.eclipse.jface.wizard.WizardPage;
import org.eclipse.ui.INewWizard;
import org.eclipse.ui.IWorkbench;
import org.eclipse.ui.IWorkbenchPage;
import org.eclipse.ui.IWorkbenchPart;
import org.eclipse.ui.IWorkbenchWindow;
import org.eclipse.ui.IWorkbenchWizard;
import org.eclipse.ui.PartInitException;
import org.eclipse.ui.actions.WorkspaceModifyOperation;
import org.eclipse.ui.part.FileEditorInput;
import org.eclipse.ui.part.ISetSelectionTarget;
public abstract class BaseApplicationModelWizard extends Wizard implements INewWizard {
private NewModelFilePage page;
private ISelection selection;
protected IWorkbench workbench;
/**
* Constructor for NewApplicationModelWizard.
*/
public BaseApplicationModelWizard() {
super();
setNeedsProgressMonitor(true);
}
/**
* Adding the page to the wizard.
*/
public void addPages() {
page = createWizardPage(selection);
addPage(page);
}
protected abstract NewModelFilePage createWizardPage(ISelection selection);
public abstract String getDefaultFileName();
@Override
public boolean performFinish() {
try {
// Remember the file.
//
final IFile modelFile = getModelFile();
if( modelFile.exists() ) {
if( ! MessageDialog.openQuestion(getShell(), "File exists", "The file already exists. "
+ "Would you like to add the extracted node to this file?")) {
return false;
}
}
// Do the work within an operation.
//
WorkspaceModifyOperation operation =
new WorkspaceModifyOperation() {
@Override
protected void execute(IProgressMonitor progressMonitor) {
try {
// Create a resource set
//
ResourceSet resourceSet = new ResourceSetImpl();
// Get the URI of the model file.
//
URI fileURI = URI.createPlatformResourceURI(modelFile.getFullPath().toString(), true);
// Create a resource for this file.
//
Resource resource = resourceSet.createResource(fileURI);
// If target file already exists, load its content
//
if (modelFile.exists()) {
resource.load(null);
}
// Add the initial model object to the contents.
//
EObject rootObject = createInitialModel();
if (rootObject != null) {
if (resource.getContents().size() == 0) {
//If target model is empty (file just created) => add as is
resource.getContents().add(rootObject);
} else {
//Otherwise (file already exists) => take the roots of source and target models
//and copy multiple attributes 'imports' and 'fragments' objects from source to target
MModelFragments sourceFragments = (MModelFragments) rootObject;
MModelFragments targetFragments = (MModelFragments) resource.getContents().get(0);
for (MApplicationElement element : sourceFragments.getImports()) {
targetFragments.getImports().add((MApplicationElement) EcoreUtil.copy((EObject) element));
}
for (MModelFragment fragment : sourceFragments.getFragments()) {
targetFragments.getFragments().add((MModelFragment) EcoreUtil.copy((EObject) fragment));
}
}
}
// Save the contents of the resource to the file system.
//
Map<Object, Object> options = new HashMap<Object, Object>();
resource.save(options);
}
catch (Exception exception) {
throw new RuntimeException(exception);
}
finally {
progressMonitor.done();
}
}
};
getContainer().run(false, false, operation);
// Select the new file resource in the current view.
//
IWorkbenchWindow workbenchWindow = workbench.getActiveWorkbenchWindow();
IWorkbenchPage page = workbenchWindow.getActivePage();
final IWorkbenchPart activePart = page.getActivePart();
if (activePart instanceof ISetSelectionTarget) {
final ISelection targetSelection = new StructuredSelection(modelFile);
getShell().getDisplay().asyncExec
(new Runnable() {
public void run() {
((ISetSelectionTarget)activePart).selectReveal(targetSelection);
}
});
}
// Open an editor on the new file.
//
try {
page.openEditor
(new FileEditorInput(modelFile),
workbench.getEditorRegistry().getDefaultEditor(modelFile.getFullPath().toString()).getId());
}
catch (PartInitException exception) {
MessageDialog.openError(workbenchWindow.getShell(), "Could not init editor", exception.getMessage()); //$NON-NLS-1$
return false;
}
return true;
}
catch (Exception exception) {
exception.printStackTrace();
MessageDialog.openError(getShell(), "Error", exception.getMessage());
return false;
}
}
protected abstract EObject createInitialModel();
protected IFile getModelFile() throws CoreException {
String containerName = page.getContainerName();
String fileName = page.getFileName();
IWorkspaceRoot root = ResourcesPlugin.getWorkspace().getRoot();
IResource resource = root.findMember(new Path(containerName));
if (!resource.exists() || !(resource instanceof IContainer)) {
throwCoreException("Container \"" + containerName
+ "\" does not exist.");
}
IContainer container = (IContainer) resource;
return container.getFile(new Path(fileName));
}
private void throwCoreException(String message) throws CoreException {
IStatus status = new Status(IStatus.ERROR,
"org.eclipse.e4.tools.emf.editor3x", IStatus.OK, message, null);
throw new CoreException(status);
}
/**
* We will accept the selection in the workbench to see if we can initialize
* from it.
*
* @see IWorkbenchWizard#init(IWorkbench, IStructuredSelection)
*/
public void init(IWorkbench workbench, IStructuredSelection selection) {
this.workbench = workbench;
this.selection = selection;
}
}
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