Bug: 359227: provide link helper for editor and corresponding digram
node in Project Explorer
diff --git a/examples/org.eclipse.graphiti.examples.common/plugin.xml b/examples/org.eclipse.graphiti.examples.common/plugin.xml
index 5d2d8d9..3ffd05b 100644
--- a/examples/org.eclipse.graphiti.examples.common/plugin.xml
+++ b/examples/org.eclipse.graphiti.examples.common/plugin.xml
Binary files differ
diff --git a/examples/org.eclipse.graphiti.examples.common/src/org/eclipse/graphiti/examples/common/navigator/EditorLinkHelper.java b/examples/org.eclipse.graphiti.examples.common/src/org/eclipse/graphiti/examples/common/navigator/EditorLinkHelper.java
new file mode 100644
index 0000000..4d5ca20
--- /dev/null
+++ b/examples/org.eclipse.graphiti.examples.common/src/org/eclipse/graphiti/examples/common/navigator/EditorLinkHelper.java
@@ -0,0 +1,81 @@
+package org.eclipse.graphiti.examples.common.navigator;
+
+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.IPath;
+import org.eclipse.core.runtime.Path;
+import org.eclipse.emf.common.util.URI;
+import org.eclipse.graphiti.ui.editor.DiagramEditorInput;
+import org.eclipse.jface.viewers.IStructuredSelection;
+import org.eclipse.jface.viewers.StructuredSelection;
+import org.eclipse.ui.IEditorInput;
+import org.eclipse.ui.IWorkbenchPage;
+import org.eclipse.ui.navigator.ILinkHelper;
+
+/**
+ * Provides information to the Common Navigator (Project Explorer) on how to
+ * link active editors with selections of diagram nodes.
+ *
+ * @since 0.9
+ */
+public class EditorLinkHelper implements ILinkHelper {
+
+ /**
+ * Return a selection that contains the file that the given editor input
+ * represent. The {@link StructuredSelection} will be compared with nodes in
+ * the tree. See also extension point
+ * {@code "org.eclipse.ui.navigator.linkHelper"}.
+ */
+ public IStructuredSelection findSelection(IEditorInput editorInput) {
+ if (editorInput instanceof DiagramEditorInput) {
+ if (editorInput.exists()) {
+ DiagramEditorInput diagramEditorInput = (DiagramEditorInput) editorInput;
+ final IFile file = getFile(diagramEditorInput.getUri());
+ if (file != null) {
+ return new StructuredSelection(file);
+ }
+ }
+
+ }
+ return StructuredSelection.EMPTY;
+ }
+
+ public void activateEditor(IWorkbenchPage aPage, IStructuredSelection aSelection) {
+ // not needed
+ }
+
+ private IFile getFile(URI uri) {
+ if (uri == null) {
+ return null;
+ }
+
+ final IWorkspaceRoot workspaceRoot = ResourcesPlugin.getWorkspace().getRoot();
+
+ // File URIs
+ final String filePath = getWorkspaceFilePath(uri.trimFragment());
+ if (filePath == null) {
+ final IPath location = Path.fromOSString(uri.toString());
+ final IFile file = workspaceRoot.getFileForLocation(location);
+ if (file != null) {
+ return file;
+ }
+ return null;
+ }
+
+ // Platform resource URIs
+ else {
+ final IResource workspaceResource = workspaceRoot.findMember(filePath);
+ return (IFile) workspaceResource;
+ }
+ }
+
+ private String getWorkspaceFilePath(URI uri) {
+ if (uri.isPlatform()) {
+ return uri.toPlatformString(true);
+ }
+ return null;
+ }
+
+}
diff --git a/examples/org.eclipse.graphiti.examples.common/src/org/eclipse/graphiti/examples/common/navigator/nodes/DiagramsNode.java b/examples/org.eclipse.graphiti.examples.common/src/org/eclipse/graphiti/examples/common/navigator/nodes/DiagramsNode.java
deleted file mode 100644
index ec75709..0000000
--- a/examples/org.eclipse.graphiti.examples.common/src/org/eclipse/graphiti/examples/common/navigator/nodes/DiagramsNode.java
+++ /dev/null
@@ -1,98 +0,0 @@
-/*******************************************************************************
- * <copyright>
- *
- * Copyright (c) 2005, 2010 SAP AG.
- * 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:
- * SAP AG - initial API, implementation and documentation
- *
- * </copyright>
- *
- *******************************************************************************/
-package org.eclipse.graphiti.examples.common.navigator.nodes;
-
-import java.util.ArrayList;
-import java.util.List;
-
-import org.eclipse.core.resources.IContainer;
-import org.eclipse.core.resources.IFile;
-import org.eclipse.core.resources.IProject;
-import org.eclipse.core.resources.IResource;
-import org.eclipse.core.runtime.CoreException;
-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.graphiti.examples.common.Messages;
-import org.eclipse.graphiti.examples.common.navigator.nodes.base.AbstractInstancesOfTypeContainerNode;
-import org.eclipse.graphiti.mm.pictograms.Diagram;
-
-
-public class DiagramsNode extends AbstractInstancesOfTypeContainerNode {
-
- private static final String NAME = Messages.DiagramsNode_DiagramNodeTitle;
-
- public DiagramsNode(Object parent, IProject project) {
- super(parent, project);
- }
-
- @Override
- protected String getContainerName() {
- return NAME;
- }
-
- public Object[] getChildren() {
- IProject project = getProject();
- if (project != null) {
- ResourceSet rSet = new ResourceSetImpl();
- return getAllDiagramFiles(project, rSet).toArray();
- }
- return null;
- }
-
- private List<IFile> getFiles(IContainer folder) {
- List<IFile> ret = new ArrayList<IFile>();
- try {
- IResource[] members = folder.members();
- for (IResource resource : members) {
- if (resource instanceof IContainer) {
- ret.addAll(getFiles((IContainer) resource));
- } else if (resource instanceof IFile) {
- IFile file = (IFile) resource;
- if (file.getName().endsWith(".diagram")) { //$NON-NLS-1$
- ret.add(file);
- }
- }
- }
- } catch (CoreException e) {
- e.printStackTrace();
- }
- return ret;
- }
-
- private List<IFile> getAllDiagramFiles(IProject project, ResourceSet rSet) {
- List<IFile> files = getFiles(project);
-
- List<IFile> ret = new ArrayList<IFile>();
- for (IFile file : files) {
- // The following call extracts the diagram from the
- // given file. For the Tutorial, diagrams always reside
- // in a file of their own and are the first root object.
- // This may of course be different in a concrete tool
- // implementation, so tool builders should use their own
- // way of retrieval here
- @SuppressWarnings("restriction")
- Diagram diagram = org.eclipse.graphiti.ui.internal.services.GraphitiUiInternal.getEmfService().getDiagramFromFile(file, rSet);
- if (diagram != null) {
- Resource eResource = diagram.eResource();
- eResource.unload();
- rSet.getResources().remove(eResource);
- ret.add(file);
- }
- }
- return ret;
- }
-}