| /******************************************************************************* |
| * Copyright (c) 2007, 2010 BMW Car IT, Technische Universitaet Muenchen, 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: |
| * BMW Car IT - Initial API and implementation |
| * Technische Universitaet Muenchen - Major refactoring and extension |
| *******************************************************************************/ |
| package org.eclipse.emf.edapt.common.ui; |
| |
| import org.eclipse.emf.ecore.presentation.EcoreEditor; |
| import org.eclipse.jface.viewers.ISelectionChangedListener; |
| import org.eclipse.jface.viewers.IStructuredSelection; |
| import org.eclipse.jface.viewers.SelectionChangedEvent; |
| import org.eclipse.swt.widgets.Composite; |
| import org.eclipse.ui.IPartListener; |
| import org.eclipse.ui.IWorkbenchPart; |
| import org.eclipse.ui.part.ViewPart; |
| |
| /** |
| * Base class for a view that is linked to the default Ecore Editor |
| * |
| * @author herrmama |
| * @author $Author$ |
| * @version $Rev$ |
| * @levd.rating RED Rev: |
| */ |
| public abstract class MetamodelEditorViewBase extends ViewPart implements |
| ISelectionChangedListener { |
| |
| /** Ecore editor to which the browser is currently linked. */ |
| private EcoreEditor editor; |
| |
| /** Part listener to react to an editor being activated or closed. */ |
| private final IPartListener partListener = new PartAdapter() { |
| /** |
| * {@inheritDoc} |
| */ |
| @Override |
| public void partActivated(IWorkbenchPart part) { |
| setEditorPart(part); |
| } |
| |
| /** |
| * {@inheritDoc} |
| */ |
| @Override |
| public void partClosed(IWorkbenchPart part) { |
| if (part == editor) { |
| setEditor(null); |
| } |
| } |
| }; |
| |
| /** |
| * {@inheritDoc} |
| */ |
| @Override |
| public final void createPartControl(Composite parent) { |
| createActions(); |
| createContents(parent); |
| |
| setEditorPart(getSite().getPage().getActiveEditor()); |
| getSite().getPage().addPartListener(partListener); |
| } |
| |
| /** |
| * Create the actions of that view |
| */ |
| protected void createActions() { |
| // to be implemented by subclasses |
| } |
| |
| /** |
| * Create the contents of that view |
| * |
| * @param parent |
| */ |
| protected abstract void createContents(Composite parent); |
| |
| /** |
| * Helper method to set editor part (checks whether editor is of the needed type) |
| * |
| * @param part Part |
| */ |
| private void setEditorPart(IWorkbenchPart part) { |
| if (part instanceof EcoreEditor) { |
| final EcoreEditor ecoreEditor = (EcoreEditor) part; |
| // not used as reflective editor |
| if (EcoreUIUtils.isMetamodelEditor(ecoreEditor)) { |
| setEditor(ecoreEditor); |
| } |
| } |
| } |
| |
| /** |
| * Helper method to set editor |
| */ |
| private void setEditor(EcoreEditor newEditor) { |
| |
| if (editor == newEditor) { |
| return; |
| } |
| |
| uninstallSelectionChangedListener(); |
| |
| final EcoreEditor oldEditor = editor; |
| editor = newEditor; |
| editorChanged(oldEditor); |
| |
| installSelectionChangedListener(); |
| } |
| |
| /** |
| * Start to listen to the selection of the current editor |
| */ |
| protected void installSelectionChangedListener() { |
| if (editor != null) { |
| editor.addSelectionChangedListener(this); |
| } |
| } |
| |
| /** |
| * Stop to listen to the selection of the current editor |
| */ |
| protected void uninstallSelectionChangedListener() { |
| if (editor != null) { |
| editor.removeSelectionChangedListener(this); |
| } |
| } |
| |
| /** |
| * Notify when the Ecore editor has changed |
| * |
| * @param oldEditor |
| */ |
| protected void editorChanged(EcoreEditor oldEditor) { |
| // to be implemented by sub classes |
| } |
| |
| /** |
| * {@inheritDoc} |
| */ |
| @Override |
| public void selectionChanged(SelectionChangedEvent event) { |
| selectionChanged((IStructuredSelection) event.getSelection()); |
| } |
| |
| /** |
| * The selection in the editor has changed |
| */ |
| protected abstract void selectionChanged(IStructuredSelection selection); |
| |
| /** |
| * {@inheritDoc} |
| */ |
| @Override |
| public void dispose() { |
| getSite().getPage().removePartListener(partListener); |
| uninstallSelectionChangedListener(); |
| super.dispose(); |
| } |
| |
| /** |
| * Getter for editor |
| * |
| * @return Ecore editor |
| */ |
| public EcoreEditor getEditor() { |
| return editor; |
| } |
| } |