| /******************************************************************************* |
| * Copyright (c) 2003, 2006 IBM Corporation 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: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.ui.tests.navigator.extension; |
| |
| import java.io.IOException; |
| import java.util.HashMap; |
| import java.util.Map; |
| import java.util.Properties; |
| |
| import org.eclipse.core.resources.IFile; |
| import org.eclipse.core.resources.IProject; |
| import org.eclipse.core.resources.IResource; |
| import org.eclipse.core.resources.IResourceChangeEvent; |
| import org.eclipse.core.resources.IResourceChangeListener; |
| import org.eclipse.core.resources.IResourceDelta; |
| import org.eclipse.core.resources.IResourceDeltaVisitor; |
| import org.eclipse.core.resources.ResourcesPlugin; |
| import org.eclipse.core.runtime.CoreException; |
| import org.eclipse.core.runtime.IAdaptable; |
| import org.eclipse.core.runtime.IPath; |
| import org.eclipse.core.runtime.IProgressMonitor; |
| import org.eclipse.core.runtime.IStatus; |
| import org.eclipse.core.runtime.Path; |
| import org.eclipse.core.runtime.Platform; |
| import org.eclipse.core.runtime.Status; |
| import org.eclipse.jface.viewers.ITreeContentProvider; |
| import org.eclipse.jface.viewers.StructuredViewer; |
| import org.eclipse.jface.viewers.Viewer; |
| import org.eclipse.ui.progress.UIJob; |
| |
| public class TestContentProvider implements ITreeContentProvider, |
| IResourceChangeListener, IResourceDeltaVisitor { |
| |
| private static final String MODEL_ROOT = "root"; |
| |
| private static final Object[] NO_CHILDREN = new Object[0]; |
| |
| private static final IPath MODEL_FILE_PATH = new Path("model.properties"); |
| |
| private final Map rootElements = new HashMap(); |
| |
| private StructuredViewer viewer; |
| |
| public TestContentProvider() { |
| ResourcesPlugin.getWorkspace().addResourceChangeListener(this, IResourceChangeEvent.POST_CHANGE); |
| } |
| |
| public Object[] getChildren(Object parentElement) { |
| |
| |
| |
| if (parentElement instanceof TestExtensionTreeData) { |
| TestExtensionTreeData data = (TestExtensionTreeData) parentElement; |
| return data.getChildren(); |
| } else { |
| |
| IProject project = adaptToProject(parentElement); |
| if (project != null && project.isAccessible()) { |
| IFile modelFile = project.getFile(MODEL_FILE_PATH); |
| if (rootElements.containsKey(modelFile)) { |
| TestExtensionTreeData model = (TestExtensionTreeData) rootElements |
| .get(modelFile); |
| return model != null ? model.getChildren() : NO_CHILDREN; |
| } else { |
| TestExtensionTreeData model = updateModel(modelFile); |
| return model != null ? model.getChildren() : NO_CHILDREN; |
| } |
| } |
| } |
| return NO_CHILDREN; |
| } |
| |
| /** |
| * @param parentElement |
| * @param class1 |
| * @return |
| */ |
| private IProject adaptToProject(Object parentElement) { |
| if(parentElement instanceof IProject) |
| return (IProject) parentElement; |
| else if(parentElement instanceof IAdaptable) |
| return (IProject) ((IAdaptable) parentElement).getAdapter(IProject.class); |
| else |
| return (IProject) Platform.getAdapterManager().getAdapter(parentElement, IProject.class); |
| } |
| |
| /** |
| * @param modelFile |
| */ |
| private TestExtensionTreeData updateModel(IFile modelFile) { |
| Properties model = new Properties(); |
| if (modelFile.exists()) { |
| try { |
| model.load(modelFile.getContents()); |
| TestExtensionTreeData root = new TestExtensionTreeData(null, |
| MODEL_ROOT, model, modelFile); |
| rootElements.put(modelFile, root); |
| return root; |
| } catch (IOException e) { |
| } catch (CoreException e) { |
| } |
| } else { |
| rootElements.remove(modelFile); |
| } |
| return null; |
| |
| } |
| |
| public Object getParent(Object element) { |
| if (element instanceof TestExtensionTreeData) { |
| TestExtensionTreeData data = (TestExtensionTreeData) element; |
| return data.getParent(); |
| } |
| return null; |
| } |
| |
| public boolean hasChildren(Object element) { |
| if (element instanceof TestExtensionTreeData) { |
| TestExtensionTreeData data = (TestExtensionTreeData) element; |
| return data.getChildren().length > 0; |
| } |
| return false; |
| } |
| |
| public Object[] getElements(Object inputElement) { |
| return getChildren(inputElement); |
| } |
| |
| public void dispose() { |
| rootElements.clear(); |
| ResourcesPlugin.getWorkspace().removeResourceChangeListener(this); |
| |
| } |
| |
| public void inputChanged(Viewer aViewer, Object oldInput, Object newInput) { |
| if (oldInput != null && !oldInput.equals(newInput)) |
| rootElements.clear(); |
| viewer = (StructuredViewer)aViewer; |
| |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.core.resources.IResourceChangeListener#resourceChanged(org.eclipse.core.resources.IResourceChangeEvent) |
| */ |
| public void resourceChanged(IResourceChangeEvent event) { |
| |
| IResourceDelta delta = event.getDelta(); |
| try { |
| delta.accept(this); |
| } catch (CoreException e) { |
| e.printStackTrace(); |
| } |
| |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.core.resources.IResourceDeltaVisitor#visit(org.eclipse.core.resources.IResourceDelta) |
| */ |
| public boolean visit(IResourceDelta delta) throws CoreException { |
| |
| IResource source = delta.getResource(); |
| switch (source.getType()) { |
| case IResource.ROOT: |
| case IResource.PROJECT: |
| case IResource.FOLDER: |
| return true; |
| case IResource.FILE: |
| final IFile file = (IFile) source; |
| if ("model.properties".equals(file.getName())) { |
| updateModel(file); |
| new UIJob("Update Test Model in CommonViewer") { |
| public IStatus runInUIThread(IProgressMonitor monitor) { |
| if (viewer != null && !viewer.getControl().isDisposed()) |
| viewer.refresh(file.getParent()); |
| return Status.OK_STATUS; |
| } |
| }.schedule(); |
| } |
| return false; |
| } |
| return false; |
| } |
| } |