org.eclipse.core.resources.IWorkspace#getRoot ( )源码实例Demo

@Override
public void propertyChange(PropertyChangeEvent event) {
    //When a property that'd change an icon changes, the tree must be updated.
    String property = event.getProperty();
    if (PyTitlePreferencesPage.isTitlePreferencesIconRelatedProperty(property)) {
        IWorkspace[] localInput = this.input;
        if (localInput != null) {
            for (IWorkspace iWorkspace : localInput) {
                IWorkspaceRoot root = iWorkspace.getRoot();
                if (root != null) {
                    //Update all children too (getUpdateRunnable wouldn't update children)
                    Runnable runnable = getRefreshRunnable(root);

                    final Collection<Runnable> runnables = new ArrayList<Runnable>();
                    runnables.add(runnable);
                    processRunnables(runnables);
                }
            }
        }

    }
}
 

/** logic of {@link IN4JSCore#findAllProjects()} with filtering by name */
private IProject findProject(BuildData buildData) {
	String eclipseProjectName = buildData.getProjectName();
	if (Strings.isNullOrEmpty(eclipseProjectName)) {
		return null;
	}
	IWorkspace workspace = ResourcesPlugin.getWorkspace();
	IWorkspaceRoot root = workspace.getRoot();
	IProject project = root.getProject(eclipseProjectName); // creates a project instance if not existing

	if (null == project || !project.isAccessible()) {
		N4JSProjectName n4jsProjectName = new EclipseProjectName(eclipseProjectName).toN4JSProjectName();

		final IProject externalProject = externalLibraryWorkspace.getProject(n4jsProjectName);
		if (null != externalProject && externalProject.exists()) {
			project = externalProject;
		}
	}

	return project;
}
 

/**
 * Create test parameter for the parameterized runner.
 *
 * @return The list of test parameters
 * @throws CoreException
 *             if core error occurs
 */
@Parameters(name = "{index}: ({0})")
public static Iterable<Object[]> getTracePaths() throws CoreException {
    IProgressMonitor progressMonitor = new NullProgressMonitor();
    IWorkspace workspace = ResourcesPlugin.getWorkspace();

    // Create a project inside workspace location
    fWorkspaceRoot = workspace.getRoot();
    fSomeProject = fWorkspaceRoot.getProject(SOME_PROJECT_NAME);
    fSomeProject.create(progressMonitor);
    fSomeProject.open(progressMonitor);

    // Create an other project outside the workspace location
    URI projectLocation = fProjectFolder.getRoot().toURI();
    fSomeOtherProject = fWorkspaceRoot.getProject(SOME_OTHER_PROJECT_NAME);
    IProjectDescription description = workspace.newProjectDescription(fSomeOtherProject.getName());
    if (projectLocation != null) {
        description.setLocationURI(projectLocation);
    }
    fSomeOtherProject.create(description, progressMonitor);
    fSomeOtherProject.open(progressMonitor);
    return Arrays.asList(new Object[][] { {fSomeProject}, {fSomeOtherProject} });
}
 

/**
 * get the IResource corresponding to the given file. Given file does not
 * need to exist.
 * 
 * @param file
 * @param isDirectory
 *            if true, an IContainer will be returned, otherwise an IFile
 *            will be returned
 * @return
 */
public static IResource getResource(File file, boolean isDirectory) {
	if (file == null) return null;
    IWorkspace workspace = ResourcesPlugin.getWorkspace();
    IWorkspaceRoot workspaceRoot = workspace.getRoot();

    IPath pathEclipse = new Path(file.getAbsolutePath());

    IResource resource = null;

    if (isDirectory) {
        resource = workspaceRoot.getContainerForLocation(pathEclipse);
    } else {
        resource = workspaceRoot.getFileForLocation(pathEclipse);
    }
    return resource;
}
 

@Test
public void testGetURIForImportedProject() {
  try {
    final IWorkspace ws = ResourcesPlugin.getWorkspace();
    final IWorkspaceRoot root = ws.getRoot();
    final IProjectDescription description = ws.newProjectDescription("bar");
    description.setLocation(root.getLocation().append("foo/bar"));
    final IProject project = root.getProject("bar");
    project.create(description, null);
    project.open(null);
    final Path file = new Path("/bar/Foo.text");
    Assert.assertFalse(this.fs.exists(file));
    Assert.assertNull(this.fs.toURI(file));
    try {
      this.fs.setContents(file, "Hello Foo");
      Assert.fail();
    } catch (final Throwable _t) {
      if (_t instanceof IllegalArgumentException) {
      } else {
        throw Exceptions.sneakyThrow(_t);
      }
    }
    Assert.assertFalse(this.fs.exists(file));
  } catch (Throwable _e) {
    throw Exceptions.sneakyThrow(_e);
  }
}
 

/**
 * Creates a file or folder handle for the source resource as if it were to
 * be created in the destination container.
 *
 * @param destination
 *            destination container
 * @param source
 *            source resource
 * @return IResource file or folder handle, depending on the source type.
 */
IResource createLinkedResourceHandle(IContainer destination, IResource source) {
    IWorkspace workspace = destination.getWorkspace();
    IWorkspaceRoot workspaceRoot = workspace.getRoot();
    IPath linkPath = destination.getFullPath().append(source.getName());
    IResource linkHandle;

    if (source.getType() == IResource.FOLDER) {
        linkHandle = workspaceRoot.getFolder(linkPath);
    } else {
        linkHandle = workspaceRoot.getFile(linkPath);
    }
    return linkHandle;
}
 

public static File getCurrentWorkspace()
{
	IWorkspace workspace = ResourcesPlugin.getWorkspace();
	IWorkspaceRoot root = workspace.getRoot();

	IPath location = root.getLocation();
	location.toFile();

	return location.toFile();
}
 

@Override
public boolean performFinish() {
	if (!super.performFinish()) {
		return false;
	}
	final Job job = new WorkspaceJob("Force the SARL nature") { //$NON-NLS-1$
		@SuppressWarnings({ "deprecation", "synthetic-access" })
		@Override
		public IStatus runInWorkspace(IProgressMonitor monitor) throws CoreException {
			final Model model = NewMavenSarlProjectWizard.this.lastModel;
			if (model != null) {
				final Plugin plugin = Iterables.find(model.getBuild().getPlugins(), it -> PLUGIN_ARTIFACT_ID.equals(it.getArtifactId()));
				plugin.setExtensions(true);
				final IWorkspace workspace = ResourcesPlugin.getWorkspace();
				final IWorkspaceRoot root = workspace.getRoot();
				final IProject project = NewMavenSarlProjectWizard.this.importConfiguration.getProject(root, model);
				// Fixing the "extensions" within the pom file
				final IFile pomFile = project.getFile(IMavenConstants.POM_FILE_NAME);
				pomFile.delete(true, new NullProgressMonitor());
				MavenPlugin.getMavenModelManager().createMavenModel(pomFile, model);
				// Update the project
				final SubMonitor submon = SubMonitor.convert(monitor);
				MavenPlugin.getProjectConfigurationManager().updateProjectConfiguration(project, submon.newChild(1));
				project.refreshLocal(IResource.DEPTH_ONE, submon.newChild(1));
			}
			return Status.OK_STATUS;
		}
	};
	job.setRule(MavenPlugin.getProjectConfigurationManager().getRule());
	job.schedule();
	return true;
}
 

/**
 * Creates a new project.
 * 
 * @param name
 *            the project name
 */
public static IProject createProject( String name ) throws CoreException
{
	IWorkspace ws = ResourcesPlugin.getWorkspace( );
	IWorkspaceRoot root = ws.getRoot( );
	IProject proj = root.getProject( name );
	if ( !proj.exists( ) )
		proj.create( null );
	if ( !proj.isOpen( ) )
		proj.open( null );
	return proj;
}
 

/**
 * Returns a <code>boolean</code> indicating whether a container name
 * represents a valid container resource in the workbench. An error message
 * is stored for future reference if the name does not represent a valid
 * container.
 * 
 * @return <code>boolean</code> indicating validity of the container name
 */
protected boolean validateContainer( )
{
	IPath path = containerGroup.getContainerFullPath( );
	if ( path == null )
	{
		problemType = PROBLEM_CONTAINER_EMPTY;
		problemMessage = Messages.getString( "WizardSaveAsPage.FolderEmpty" ); //$NON-NLS-1$
		return false;
	}
	IWorkspace workspace = ResourcesPlugin.getWorkspace( );
	String projectName = path.segment( 0 );
	if ( projectName == null
			|| !workspace.getRoot( ).getProject( projectName ).exists( ) )
	{
		problemType = PROBLEM_PROJECT_DOES_NOT_EXIST;
		problemMessage = Messages.getString( "WizardSaveAsPage.NoProject" ); //$NON-NLS-1$
		return false;
	}
	// path is invalid if any prefix is occupied by a file
	IWorkspaceRoot root = workspace.getRoot( );
	while ( path.segmentCount( ) > 1 )
	{
		if ( root.getFile( path ).exists( ) )
		{
			problemType = PROBLEM_PATH_OCCUPIED;
			problemMessage = Messages.getFormattedString( "WizardSaveAsPage.PathOccupied", new Object[]{path.makeRelative( )} ); //$NON-NLS-1$
			return false;
		}
		path = path.removeLastSegments( 1 );
	}
	return true;
}
 

public IProject getProject(String name) {
	IWorkspace workspace = ResourcesPlugin.getWorkspace();
	IWorkspaceRoot root = workspace.getRoot();
	return root.getProject(name);
}
 

public IProject[] getProjectsInWorkspace() {
	IWorkspace workspace = ResourcesPlugin.getWorkspace();
	IWorkspaceRoot root = workspace.getRoot();
	return root.getProjects();
}
 

public IProject getProject(String name) {
	IWorkspace workspace = ResourcesPlugin.getWorkspace();
	IWorkspaceRoot root = workspace.getRoot();
	return root.getProject(name);
}
 

private static IWorkspaceRoot getWorkspaceRoot() {
  IWorkspace workspace = ResourcesPlugin.getWorkspace();
  return workspace.getRoot();
}
 

/**
 * Copies the resources to the given destination. This method is called
 * recursively to merge folders during folder copy.
 *
 * @param resources
 *            the resources to copy
 * @param destination
 *            destination to which resources will be copied
 * @param subMonitor
 *            a progress monitor for showing progress and for cancelation
 */
protected void copy(IResource[] resources, IPath destination, IProgressMonitor subMonitor) throws CoreException {

    subMonitor.beginTask(IDEWorkbenchMessages.CopyFilesAndFoldersOperation_CopyResourcesTask, resources.length);

    for (int i = 0; i < resources.length; i++) {
        IResource source = resources[i];
        IPath destinationPath = destination.append(source.getName());
        IWorkspace workspace = source.getWorkspace();
        IWorkspaceRoot workspaceRoot = workspace.getRoot();
        IResource existing = workspaceRoot.findMember(destinationPath);
        if (source.getType() == IResource.FOLDER && existing != null) {
            // the resource is a folder and it exists in the destination,
            // copy the
            // children of the folder.
            if (homogenousResources(source, existing)) {
                IResource[] children = ((IContainer) source).members();
                copy(children, destinationPath, new SubProgressMonitor(subMonitor, 1));
            } else {
                // delete the destination folder, copying a linked folder
                // over an unlinked one or vice versa. Fixes bug 28772.
                delete(existing, new SubProgressMonitor(subMonitor, 0));
                source.copy(destinationPath, IResource.SHALLOW, new SubProgressMonitor(subMonitor, 1));
            }
        } else {
            if (existing != null) {
                if (homogenousResources(source, existing)) {
                    copyExisting(source, existing, new SubProgressMonitor(subMonitor, 1));
                } else {
                    // Copying a linked resource over unlinked or vice
                    // versa.
                    // Can't use setContents here. Fixes bug 28772.
                    delete(existing, new SubProgressMonitor(subMonitor, 0));
                    source.copy(destinationPath, IResource.SHALLOW, new SubProgressMonitor(subMonitor, 1));
                }
            } else {
                source.copy(destinationPath, IResource.SHALLOW, new SubProgressMonitor(subMonitor, 1));

            }

            if (subMonitor.isCanceled()) {
                throw new OperationCanceledException();
            }
        }
    }
}
 

private TreeMap<String, TreeSet<Model>> buildMap() {
       final Spec currentSpec = ToolboxHandle.getCurrentSpec();
       if (currentSpec == null) {
       	return null;
       }
       
	final IProject specProject = currentSpec.getProject();
	final TreeMap<String, TreeSet<Model>> projectModelMap = new TreeMap<>();
	
	try {
		final IWorkspace iws = ResourcesPlugin.getWorkspace();
		final IWorkspaceRoot root = iws.getRoot();
		final IProject[] projects = root.getProjects();
		
		for (final IProject project : projects) {
			if (!specProject.equals(project)) {
				projectModelMap.put(project.getName(), new TreeSet<>(MODEL_SORTER));
			}
		}
		
		final String currentProjectName = specProject.getName();
		final ILaunchManager launchManager = DebugPlugin.getDefault().getLaunchManager();
		final ILaunchConfigurationType launchConfigurationType
				= launchManager.getLaunchConfigurationType(TLCModelLaunchDelegate.LAUNCH_CONFIGURATION_TYPE);
		final ILaunchConfiguration[] launchConfigurations
				= launchManager.getLaunchConfigurations(launchConfigurationType);
		for (final ILaunchConfiguration launchConfiguration : launchConfigurations) {
			final String projectName = launchConfiguration.getAttribute(IConfigurationConstants.SPEC_NAME, "-l!D!q_-l!D!q_-l!D!q_");
			if (!projectName.equals(currentProjectName)) {
				final TreeSet<Model> models = projectModelMap.get(projectName);
				
				if (models != null) {
					final Model model = launchConfiguration.getAdapter(Model.class);
					
					if (!model.isSnapshot()) {
						models.add(model);
					}
				} else {
					TLCUIActivator.getDefault().logError("Could not generate model map for [" + projectName + "]!");
				}
			}
		}
	} catch (final CoreException e) {
		TLCUIActivator.getDefault().logError("Building foreign model map.", e);
		
		return null;
	}
	
	return projectModelMap;
}
 

/**
 * Test Class setup
 *
 * @throws Exception
 *             on error
 */
@BeforeClass
public static void init() throws Exception {
    IProgressMonitor progressMonitor = new NullProgressMonitor();
    IWorkspace workspace = ResourcesPlugin.getWorkspace();

    SWTBotUtils.initialize();

    /* Set up for SWTBot */
    SWTBotPreferences.TIMEOUT = 20000; /* 20 second timeout */
    SWTBotPreferences.KEYBOARD_LAYOUT = "EN_US";
    fLogger.removeAllAppenders();
    fLogger.addAppender(new ConsoleAppender(new SimpleLayout(), ConsoleAppender.SYSTEM_OUT));
    fBot = new SWTWorkbenchBot();

    /* Finish waiting for eclipse to load */
    WaitUtils.waitForJobs();

    // Manually create C project
    fWorkspaceRoot = workspace.getRoot();
    fSomeProject = fWorkspaceRoot.getProject(SOME_PROJECT_NAME);
    fSomeProject.create(progressMonitor);
    fSomeProject.open(progressMonitor);
    IProjectDescription description = fSomeProject.getDescription();
    description.setNatureIds(new String[] { "org.eclipse.cdt.core.cnature" });
    fSomeProject.setDescription(description, null);
    fSomeProject.open(progressMonitor);

    /* set up test trace */
    URL location = FileLocator.find(TmfCoreTestPlugin.getDefault().getBundle(), new Path(TRACE_PATH), null);
    URI uri;
    try {
        uri = FileLocator.toFileURL(location).toURI();
        fTestFile = new File(uri);
    } catch (URISyntaxException | IOException e) {
        fail(e.getMessage());
    }
    assumeTrue(fTestFile.exists());

    /* setup timestamp preference */
    IEclipsePreferences defaultPreferences = InstanceScope.INSTANCE.getNode(Activator.PLUGIN_ID);
    defaultPreferences.put(ITmfTimePreferencesConstants.DATIME, "MMM d HH:mm:ss");
    defaultPreferences.put(ITmfTimePreferencesConstants.SUBSEC, ITmfTimePreferencesConstants.SUBSEC_NO_FMT);
    TmfTimestampFormat.updateDefaultFormats();
}
 

/**
 * Test the backward compatibility
 */
@Test
public void testExperimentLinkBackwardCompatibility() {
    /*
     * close the editor for the trace to avoid name conflicts with the one for the
     * experiment
     */
    fBot.closeAllEditors();

    IWorkspace workspace = ResourcesPlugin.getWorkspace();
    IWorkspaceRoot root = workspace.getRoot();
    final IProject project = root.getProject(TRACE_PROJECT_NAME);
    assertTrue(project.exists());
    TmfProjectElement projectElement = TmfProjectRegistry.getProject(project);

    // Get the experiment folder
    TmfExperimentFolder experimentsFolder = projectElement.getExperimentsFolder();
    assertNotNull("Experiment folder should exist", experimentsFolder);
    IFolder experimentsFolderResource = experimentsFolder.getResource();
    String experimentName = "exp";
    IFolder expFolder = experimentsFolderResource.getFolder(experimentName);
    assertFalse(expFolder.exists());

    // Create the experiment
    try {
        expFolder.create(true, true, null);
        IFile file = expFolder.getFile(TRACE_NAME);
        file.createLink(Path.fromOSString(fTestFile.getAbsolutePath()), IResource.REPLACE, new NullProgressMonitor());
    } catch (CoreException e) {
        fail("Failed to create the experiment");
    }

    fBot.viewByTitle(PROJECT_EXPLORER_VIEW_NAME).setFocus();
    SWTBotTreeItem experimentsItem = SWTBotUtils.getTraceProjectItem(fBot, SWTBotUtils.selectProject(fBot, TRACE_PROJECT_NAME), "Experiments");

    SWTBotTreeItem expItem = SWTBotUtils.getTraceProjectItem(fBot, experimentsItem, "exp");

    // find the trace under the experiment
    expItem.expand();
    expItem.getNode(TRACE_NAME);

    // Open the experiment
    expItem.contextMenu().menu("Open").click();
    fBot.waitUntil(new ConditionHelpers.ActiveEventsEditor(fBot, experimentName));
}
 

@Override
public IAdaptable getDefaultPageInput() {
    IWorkspace workspace = ResourcesPlugin.getWorkspace();
    return workspace.getRoot();
}
 

private List getExistingEntries( IClasspathEntry[] classpathEntries,IProject project )
{
	ArrayList newClassPath = new ArrayList( );
	for ( int i = 0; i < classpathEntries.length; i++ )
	{
		IClasspathEntry curr = classpathEntries[i];
		if ( curr.getEntryKind( ) == IClasspathEntry.CPE_LIBRARY )
		{
			try
			{
				boolean inWorkSpace = true;
				IWorkspace space = ResourcesPlugin.getWorkspace();
				if (space == null || space.getRoot( ) == null)
				{
					inWorkSpace = false;
				}
					
				IWorkspaceRoot root = ResourcesPlugin.getWorkspace().getRoot( );
				IPath path = curr.getPath( );
				if (root.findMember( path ) == null)
				{
					inWorkSpace = false;
				}
				
				if (inWorkSpace)
				{
					String absPath = getFullPath( path, root.findMember( path ).getProject( ));
				
					URL url = new URL("file:///" + absPath);//$NON-NLS-1$//file:/
					newClassPath.add(url);
				}
				else
				{
					newClassPath.add( curr.getPath( ).toFile( ).toURL( ) );
				}
				
			}
			catch ( MalformedURLException e )
			{
				// DO nothing
			}
		}
	}
	return newClassPath;
}