| /******************************************************************************* |
| * Copyright (c) 2013 CEA LIST 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: |
| * E.D.Willink (CEA LIST) - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.ocl.examples.emf.validation.validity.ui.view; |
| |
| import org.eclipse.core.runtime.IAdaptable; |
| import org.eclipse.emf.common.notify.Notifier; |
| import org.eclipse.emf.common.util.URI; |
| import org.eclipse.emf.ecore.EObject; |
| import org.eclipse.jdt.annotation.NonNull; |
| import org.eclipse.jdt.annotation.Nullable; |
| import org.eclipse.jface.text.ITextSelection; |
| import org.eclipse.jface.viewers.ISelection; |
| import org.eclipse.jface.viewers.IStructuredSelection; |
| import org.eclipse.jface.viewers.ITreeSelection; |
| import org.eclipse.ui.IWorkbenchPart; |
| import org.eclipse.xtext.nodemodel.ICompositeNode; |
| import org.eclipse.xtext.nodemodel.INode; |
| import org.eclipse.xtext.nodemodel.util.NodeModelUtils; |
| import org.eclipse.xtext.parser.IParseResult; |
| import org.eclipse.xtext.resource.XtextResource; |
| import org.eclipse.xtext.ui.editor.XtextEditor; |
| import org.eclipse.xtext.ui.editor.model.IXtextDocument; |
| import org.eclipse.xtext.ui.editor.outline.impl.EObjectNode; |
| import org.eclipse.xtext.util.concurrent.IUnitOfWork; |
| |
| public class SelectionUtil |
| { |
| public static @Nullable Notifier getNotifierSelection(@Nullable ISelection selection, @Nullable IWorkbenchPart part) { |
| Notifier input = null; |
| if (selection instanceof ITreeSelection) { |
| input = getTreeSelection((ITreeSelection) selection, part); |
| } else if (selection instanceof IStructuredSelection) { |
| input = getStructureSelection((IStructuredSelection) selection, part); |
| } |
| else if (selection instanceof ITextSelection) { |
| input = getTextSelection((ITextSelection) selection, part); |
| } |
| return input; |
| } |
| |
| public static @Nullable Notifier getTreeSelection(@NonNull ITreeSelection selection, @Nullable IWorkbenchPart part) { |
| if (selection.size() == 1) { |
| Object firstElement = selection.getFirstElement(); |
| if (firstElement instanceof Notifier) |
| return (Notifier) firstElement; |
| if (firstElement instanceof IAdaptable) { |
| Object adaptedElement = ((IAdaptable)firstElement).getAdapter(EObject.class); // EMF Facet |
| if (adaptedElement instanceof Notifier) |
| return (Notifier) adaptedElement; |
| } |
| if (firstElement instanceof EObjectNode) { |
| return getXtextOutlineSelection((EObjectNode) firstElement, part); |
| } |
| } |
| return null; |
| } |
| |
| public static @Nullable Notifier getStructureSelection(@NonNull IStructuredSelection selection, @Nullable IWorkbenchPart part) { |
| if (selection.size() == 1) { |
| Object firstElement = selection.getFirstElement(); |
| if (firstElement instanceof Notifier) |
| return (Notifier) firstElement; |
| if (firstElement instanceof IAdaptable) { |
| Object adaptedElement = ((IAdaptable)firstElement).getAdapter(EObject.class); // EMF Facet |
| if (adaptedElement instanceof Notifier) |
| return (Notifier) adaptedElement; |
| } |
| if (firstElement instanceof EObjectNode) { |
| return getXtextOutlineSelection((EObjectNode) firstElement, part); |
| } |
| } |
| return null; |
| } |
| |
| public static @Nullable Notifier getTextSelection(final @NonNull ITextSelection selection, @Nullable IWorkbenchPart part) { |
| if (selection.getStartLine() < 0 || selection.getEndLine() < 0) { |
| return null; |
| } |
| if (!(part instanceof XtextEditor)) { |
| return null; |
| } |
| IXtextDocument document = ((XtextEditor)part).getDocument(); |
| Notifier selectedObject = document.readOnly(new IUnitOfWork<Notifier, XtextResource>() { |
| public Notifier exec(@Nullable XtextResource xtextResource) { |
| if (xtextResource == null) { |
| return null; |
| } |
| IParseResult parseResult = xtextResource.getParseResult(); |
| if (parseResult == null) |
| throw new NullPointerException("parseResult is null"); |
| ICompositeNode rootNode = parseResult.getRootNode(); |
| INode lastVisibleNode = NodeModelUtils.findLeafNodeAtOffset(rootNode, selection.getOffset()); |
| if (lastVisibleNode == null) { |
| return null; |
| } |
| EObject currentModel = NodeModelUtils.findActualSemanticObjectFor(lastVisibleNode); |
| // if (currentModel instanceof Pivotable) { |
| // return ((Pivotable)currentModel).getPivot(); |
| // } |
| // else { |
| return currentModel; |
| // } |
| } |
| }); |
| return selectedObject; |
| } |
| |
| public static @Nullable Notifier getXtextOutlineSelection(@NonNull EObjectNode selection, @Nullable IWorkbenchPart part) { |
| if (!(part instanceof XtextEditor)) { // it's a ContentOutline |
| return null; |
| } |
| // Find matching editor |
| final URI selectedURI = selection.getEObjectURI(); |
| IXtextDocument document = ((XtextEditor)part).getDocument(); |
| Notifier selectedObject = document.readOnly(new IUnitOfWork<Notifier, XtextResource>() { |
| public Notifier exec(@Nullable XtextResource xtextResource) { |
| if (xtextResource == null) { |
| return null; |
| } |
| EObject eObject = xtextResource.getEObject(selectedURI.fragment()); |
| return eObject; |
| } |
| }); |
| return selectedObject; |
| } |
| } |