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/*******************************************************************************
* Copyright (c) 2008, 2014 Obeo, CEA, 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:
* Obeo - initial API and implementation
* Christian W. Damus (CEA) - bug 410346
*
*******************************************************************************/
package org.eclipse.papyrus.uml.diagram.wizards.pages;
import static org.eclipse.papyrus.uml.diagram.wizards.utils.WizardsHelper.adapt;
import static org.eclipse.papyrus.uml.diagram.wizards.utils.WizardsHelper.getSelectedResourceURI;
import java.util.ArrayList;
import java.util.List;
import org.eclipse.emf.common.notify.AdapterFactory;
import org.eclipse.emf.common.util.URI;
import org.eclipse.emf.common.util.WrappedException;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.emf.ecore.provider.EcoreItemProviderAdapterFactory;
import org.eclipse.emf.ecore.resource.Resource;
import org.eclipse.emf.ecore.resource.Resource.Diagnostic;
import org.eclipse.emf.ecore.util.FeatureMap;
import org.eclipse.emf.edit.provider.ComposedAdapterFactory;
import org.eclipse.emf.edit.provider.IDisposable;
import org.eclipse.emf.edit.provider.IWrapperItemProvider;
import org.eclipse.emf.edit.provider.ReflectiveItemProviderAdapterFactory;
import org.eclipse.emf.edit.ui.provider.AdapterFactoryContentProvider;
import org.eclipse.emf.edit.ui.provider.AdapterFactoryLabelProvider;
import org.eclipse.jface.viewers.ISelectionChangedListener;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.jface.viewers.SelectionChangedEvent;
import org.eclipse.jface.viewers.StructuredSelection;
import org.eclipse.jface.viewers.TreeViewer;
import org.eclipse.jface.wizard.WizardPage;
import org.eclipse.papyrus.commands.Activator;
import org.eclipse.papyrus.infra.core.resource.ModelSet;
import org.eclipse.papyrus.infra.core.resource.ModelUtils;
import org.eclipse.papyrus.infra.widgets.toolbox.notification.Type;
import org.eclipse.papyrus.infra.widgets.toolbox.notification.builders.NotificationBuilder;
import org.eclipse.papyrus.uml.diagram.wizards.Messages;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.DisposeEvent;
import org.eclipse.swt.events.DisposeListener;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Label;
/**
* Wizard page that allows to select element from model.
*
* @author <a href="mailto:jerome.benois@obeo.fr">Jerome Benois</a>
*/
public class SelectRootElementPage extends WizardPage {
/** The selected model element. */
protected EObject selectedModelElement;
/** TreeViewer use to display the content of the domain model. */
private TreeViewer modelViewer;
/** The my domain model resource. */
private final Resource myDomainModelResource;
/** The Constant PAGE_ID. */
public static final String PAGE_ID = "SelectRootPage"; //$NON-NLS-1$
/**
* Constructor.
*
* @param selection
* the initial selection from which to get the resource for root element
*/
public SelectRootElementPage(IStructuredSelection selection) {
super(PAGE_ID);
setTitle(Messages.SelectRootElementPage_select_root_element_title);
setDescription(Messages.SelectRootElementPage_select_root_element_desc);
Resource resource = null;
if(!selection.isEmpty()) {
resource = adapt(selection.getFirstElement(), Resource.class);
if(resource == null) {
URI uri = getSelectedResourceURI(selection);
if(uri != null) {
resource = getResourceForURI(uri);
}
}
}
myDomainModelResource = resource;
}
/**
* Gets the model element.
*
* @return the selected model element
*/
public EObject getModelElement() {
return selectedModelElement;
}
/**
* Creates the control.
*
* @param parent
* the parent
* @see org.eclipse.jface.dialogs.IDialogPage#createControl(org.eclipse.swt.widgets.Composite)
*/
public void createControl(Composite parent) {
initializeDialogUnits(parent);
Composite plate = new Composite(parent, SWT.NONE);
plate.setLayoutData(new GridData(GridData.FILL_BOTH));
GridLayout layout = new GridLayout();
layout.marginWidth = 0;
plate.setLayout(layout);
setControl(plate);
Label label = new Label(plate, SWT.NONE);
// label.setText("Select the root model element");
label.setLayoutData(new GridData(GridData.HORIZONTAL_ALIGN_BEGINNING));
modelViewer = new TreeViewer(plate, SWT.SINGLE | SWT.H_SCROLL | SWT.V_SCROLL | SWT.BORDER);
GridData layoutData = new GridData(GridData.FILL_BOTH);
layoutData.heightHint = 300;
layoutData.widthHint = 300;
modelViewer.getTree().setLayoutData(layoutData);
final AdapterFactory adapterFactory = createAdapterFactory();
modelViewer.setContentProvider(new AdapterFactoryContentProvider(adapterFactory));
modelViewer.setLabelProvider(new AdapterFactoryLabelProvider(adapterFactory));
modelViewer.setInput(myDomainModelResource);
selectedModelElement = getModelRoot(myDomainModelResource);
modelViewer.setSelection(selectedModelElement == null ? new StructuredSelection() : new StructuredSelection(selectedModelElement));
modelViewer.addSelectionChangedListener(new ISelectionChangedListener() {
public void selectionChanged(SelectionChangedEvent event) {
updateSelection((IStructuredSelection)event.getSelection());
}
});
modelViewer.getControl().addDisposeListener(new DisposeListener() {
public void widgetDisposed(DisposeEvent e) {
// Dispose the adapter factory that we created to avoid leaking its adapters
if(adapterFactory instanceof IDisposable) {
((IDisposable)adapterFactory).dispose();
}
}
});
setPageComplete(validatePage());
}
/**
* Gets the model root.
*
* @param modelResource
* the model resource
* @return the model root
*/
private EObject getModelRoot(Resource modelResource) {
if(modelResource == null) {
//log
return null;
}
return modelResource.getContents().get(0);
}
/**
* Gets the resource for a URI.
*
* @param uri
* the URI of the resource
* @return the resource
*/
private Resource getResourceForURI(URI uri) {
if(uri == null) {
// log
return null;
}
ModelSet modelSet = new ModelSet();
Resource resource = null;
try {
resource = modelSet.getResource(uri, true);
} catch (WrappedException e) {
if(ModelUtils.isDegradedModeAllowed(e.getCause())) {
resource = modelSet.getResource(uri, true);
if(resource == null) {
error(e.getMessage());
throw e;
}
} else {
error(e.getMessage());
throw e;
}
}
if(!resource.getErrors().isEmpty()) {
StringBuilder builder = new StringBuilder();
for(Diagnostic d : resource.getErrors()) {
builder.append(String.format("<li>%s</li>", d.getMessage().replaceAll("\\<.*?\\>", ""))); //Basic strip tags to avoid breaking the NotificationBuilder with invalid HTML
}
error(builder.toString());
}
return resource;
}
/**
* @param resource
* @param e
*/
private void error(String message) {
try {
NotificationBuilder.createWarningPopup(String.format("<form>Problems encountered in your input model, after the save you could lose data :%s</form>", message)).setHTML(true).setType(Type.WARNING).run();
} catch (Exception ex) {
Activator.log.error(message, ex);
}
}
/**
* Update selection.
*
* @param selection
* the selection
*/
protected void updateSelection(IStructuredSelection selection) {
selectedModelElement = null;
if(selection.size() == 1) {
Object selectedElement = selection.getFirstElement();
if(selectedElement instanceof IWrapperItemProvider) {
selectedElement = ((IWrapperItemProvider)selectedElement).getValue();
}
if(selectedElement instanceof FeatureMap.Entry) {
selectedElement = ((FeatureMap.Entry)selectedElement).getValue();
}
if(selectedElement instanceof EObject) {
selectedModelElement = (EObject)selectedElement;
}
}
setPageComplete(validatePage());
}
/**
* Validate page.
*
* @return true, if successful
*/
protected boolean validatePage() {
return selectedModelElement != null;
}
/**
* Creates the adapter factory.
*
* @return the composed adapter factory
*/
protected ComposedAdapterFactory createAdapterFactory() {
List<AdapterFactory> factories = new ArrayList<AdapterFactory>();
fillItemProviderFactories(factories);
return new ComposedAdapterFactory(factories);
}
/**
* Fill item provider factories.
*
* @param factories
* the factories
*/
protected void fillItemProviderFactories(List<AdapterFactory> factories) {
// custom icons for model elements
factories.add(new ComposedAdapterFactory(ComposedAdapterFactory.Descriptor.Registry.INSTANCE));
factories.add(new EcoreItemProviderAdapterFactory());
factories.add(new ReflectiveItemProviderAdapterFactory());
}
}
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