org.eclipse.ui.internal.ErrorEditorPart#org.eclipse.xtext.ui.editor.utils.EditorUtils源码实例Demo

@Override
public void activateEditor(final IWorkbenchPage page, final IStructuredSelection selection) {
	if (null != selection && !selection.isEmpty()) {
		final Object firstElement = selection.getFirstElement();
		if (firstElement instanceof ResourceNode) {
			SafeURI<?> nodeLocation = ((ResourceNode) firstElement).getLocation();
			if (nodeLocation.isFile()) {
				final URI uri = nodeLocation.toURI();
				final IEditorInput editorInput = EditorUtils.createEditorInput(new URIBasedStorage(uri));
				final IEditorPart editor = page.findEditor(editorInput);
				if (null != editor) {
					page.bringToTop(editor);
				} else {
					languageSpecificURIEditorOpener.open(uri, true);
				}
				return;
			}
		}
	}
	super.activateEditor(page, selection);
}
 

@Override
public Object execute(final ExecutionEvent event) throws ExecutionException {
	final XtextEditor xtextEditor = EditorUtils.getActiveXtextEditor(event);
	if (xtextEditor != null) {
		final IXtextDocument document = xtextEditor.getDocument();
		document.priorityReadOnly(new IUnitOfWork.Void<XtextResource>()  {
			@Override
			public void process(XtextResource state) throws Exception {
				final QuickOutlinePopup quickOutlinePopup = createPopup(xtextEditor.getEditorSite().getShell());
				quickOutlinePopup.setEditor(xtextEditor);
				quickOutlinePopup.setInput(document);
				if (event.getTrigger() != null) {
					quickOutlinePopup.setEvent((Event) event.getTrigger());
				}
				quickOutlinePopup.open();
			}
		});
	}
	return null;
}
 

@Override
public Object execute(ExecutionEvent event) throws ExecutionException {
	XtextEditor editor = EditorUtils.getActiveXtextEditor(event);
	if (editor != null) {
		ISelection selection = editor.getSelectionProvider().getSelection();
		if (selection instanceof ITextSelection) {
			IWorkbenchWindow workbenchWindow = editor.getEditorSite().getWorkbenchWindow();
			editor.getDocument().priorityReadOnly(resource -> {
				openHierarchy(eObjectAtOffsetHelper.resolveElementAt(resource, ((ITextSelection) selection).getOffset()),
						workbenchWindow);
				return null;
			});
		}
	}
	return null;
}
 

@Override
public Object execute(ExecutionEvent event) throws ExecutionException {
	try {
		XtextEditor editor = EditorUtils.getActiveXtextEditor(event);
		if (editor != null) {
			final ITextSelection selection = (ITextSelection) editor.getSelectionProvider().getSelection();
			editor.getDocument().priorityReadOnly(new IUnitOfWork.Void<XtextResource>() {
				@Override
				public void process(XtextResource state) throws Exception {
					EObject target = eObjectAtOffsetHelper.resolveElementAt(state, selection.getOffset());
					findReferences(target);
				}
			});
		}
	} catch (Exception e) {
		LOG.error(Messages.FindReferencesHandler_3, e);
	}
	return null;
}
 

@Override
public IEditorPart open(final URI uri, final EReference crossReference, final int indexInList, final boolean select) {
	Iterator<Pair<IStorage, IProject>> storages = mapper.getStorages(uri.trimFragment()).iterator();
	if (storages != null && storages.hasNext()) {
		try {
			IStorage storage = storages.next().getFirst();
			IEditorInput editorInput = EditorUtils.createEditorInput(storage);
			IWorkbenchPage activePage = workbench.getActiveWorkbenchWindow().getActivePage();
			final IEditorPart editor = IDE.openEditor(activePage, editorInput, getEditorId());
			selectAndReveal(editor, uri, crossReference, indexInList, select);
			return EditorUtils.getXtextEditor(editor);
		} catch (WrappedException e) {
			logger.error("Error while opening editor part for EMF URI '" + uri + "'", e.getCause());
		} catch (PartInitException partInitException) {
			logger.error("Error while opening editor part for EMF URI '" + uri + "'", partInitException);
		}
	}
	return null;
}
 

@Override
public Object execute(ExecutionEvent event) throws ExecutionException {
	XtextEditor xtextEditor = EditorUtils.getActiveXtextEditor(event);
	if (xtextEditor != null) {
		ITextSelection selection = (ITextSelection) xtextEditor.getSelectionProvider().getSelection();

		IRegion region = new Region(selection.getOffset(), selection.getLength());

		ISourceViewer internalSourceViewer = xtextEditor.getInternalSourceViewer();

		IHyperlink[] hyperlinks = getDetector().detectHyperlinks(internalSourceViewer, region, false);
		if (hyperlinks != null && hyperlinks.length > 0) {
			IHyperlink hyperlink = hyperlinks[0];
			hyperlink.open();
		}
	}		
	return null;
}
 

@Override
protected String getQualifiedName(ExecutionEvent event) {
	XtextEditor activeXtextEditor = EditorUtils.getActiveXtextEditor(event);
	if (activeXtextEditor == null) {
		return null;
	}
	final ITextSelection selection = getTextSelection(activeXtextEditor);
	return activeXtextEditor.getDocument().priorityReadOnly(new IUnitOfWork<String, XtextResource>() {

		@Override
		public String exec(XtextResource xTextResource) throws Exception {
			EObject context = getContext(selection, xTextResource);
			EObject selectedElement = getSelectedName(selection, xTextResource);
			return getQualifiedName(selectedElement, context);
		}

	});
}
 

@Override
public Object execute(ExecutionEvent event) throws ExecutionException {
	final XtextEditor editor = EditorUtils.getActiveXtextEditor(event);
	if (editor != null) {
		final ITextSelection selection = (ITextSelection) editor.getSelectionProvider().getSelection();
		editor.getDocument().priorityReadOnly(new IUnitOfWork<Void, XtextResource>() {
			@Override
			public java.lang.Void exec(XtextResource resource) throws Exception {
				JvmIdentifiableElement jvmIdentifiable = jvmElementAtOffsetHelper.getJvmIdentifiableElement(resource, selection.getOffset());
				if (jvmIdentifiable != null) {
					IJavaElement javaType = javaElementFinder.findElementFor(jvmIdentifiable);
						if (javaType != null)
							openPresentation(editor, javaType, jvmIdentifiable);
				}
				return null;
			}
		});
	}
	return null;
}
 

private void doPasteWithImportsOperation() {
	XbaseClipboardData xbaseClipboardData = ClipboardUtil
			.clipboardOperation(new Function<Clipboard, XbaseClipboardData>() {
				@Override
				public XbaseClipboardData apply(Clipboard input) {
					Object content = input.getContents(TRANSFER_INSTANCE);
					if (content instanceof XbaseClipboardData) {
						return (XbaseClipboardData) content;
					}
					return null;
				}
			});
	JavaImportData javaImportsContent = ClipboardUtil.getJavaImportsContent();
	String textFromClipboard = ClipboardUtil.getTextFromClipboard();
	XtextEditor xtextEditor = EditorUtils.getXtextEditor(getTextEditor());
	boolean addImports = shouldAddImports(xtextEditor.getDocument(), caretOffset(xtextEditor));
	if (xbaseClipboardData != null && !sameTarget(xbaseClipboardData)) {
		doPasteXbaseCode(xbaseClipboardData, addImports);
	} else if (javaImportsContent != null) {
		doPasteJavaCode(textFromClipboard, javaImportsContent, addImports);
	} else {
		textOperationTarget.doOperation(operationCode);
	}
}
 

public JvmDeclaredType choose(final List<JvmDeclaredType> candidateTypes, Iterable<TypeUsage> usages, final XtextResource resource) {
	XtextEditor activeXtextEditor = EditorUtils.getActiveXtextEditor();
	if (activeXtextEditor==null) return null;
	revealInEditor(activeXtextEditor, usages, resource);
	Shell shell = Display.getDefault().getActiveShell();
	IStructuredContentProvider contentProvider = new ContentProvider();
	Dialog dialog = new Dialog(shell, new LabelProvider(labelProvider), contentProvider);
	dialog.setInput(candidateTypes);
	dialog.setInitialSelections((Object[])new JvmDeclaredType[] { candidateTypes.get(0) });
	int result = dialog.open();
	if(originalSelection != null)
		activeXtextEditor.getSelectionProvider().setSelection(originalSelection);
	if(result == Window.OK && dialog.getResult().length > 0) 
		return (JvmDeclaredType) dialog.getResult()[0];
	else 
		return null;
}
 

@Override
public Object execute(final ExecutionEvent event) throws ExecutionException {
  try {
    Object _xblockexpression = null;
    {
      this.syncUtil.totalSync(false);
      final XtextEditor editor = EditorUtils.getActiveXtextEditor(event);
      if ((editor != null)) {
        ISelection _selection = editor.getSelectionProvider().getSelection();
        final ITextSelection selection = ((ITextSelection) _selection);
        final IXtextDocument document = editor.getDocument();
        this.importer.importStaticMethod(document, selection);
      }
      _xblockexpression = null;
    }
    return _xblockexpression;
  } catch (Throwable _e) {
    throw Exceptions.sneakyThrow(_e);
  }
}
 

@Override
public Object execute(final ExecutionEvent event) throws ExecutionException {
  try {
    Object _xblockexpression = null;
    {
      this.syncUtil.totalSync(false);
      final XtextEditor editor = EditorUtils.getActiveXtextEditor(event);
      if ((editor != null)) {
        ISelection _selection = editor.getSelectionProvider().getSelection();
        final ITextSelection selection = ((ITextSelection) _selection);
        final IXtextDocument document = editor.getDocument();
        this.importer.importStaticMethod(document, selection);
      }
      _xblockexpression = null;
    }
    return _xblockexpression;
  } catch (Throwable _e) {
    throw Exceptions.sneakyThrow(_e);
  }
}
 

/**
 * If a platform plugin URI is given, a read-only Xtext editor is opened and returned. {@inheritDoc}
 *
 * @see {@link org.eclipse.emf.common.util.URI#isPlatformPlugin()}
 */
@Override
public IEditorPart open(final URI uri, final EReference crossReference, final int indexInList, final boolean select) {
  IEditorPart result = super.open(uri, crossReference, indexInList, select);
  if (result == null && (uri.isPlatformPlugin() || OSGI_RESOURCE_URL_PROTOCOL.equals(uri.scheme()))) {
    final IModelLocation modelLocation = getModelLocation(uri.trimFragment());
    if (modelLocation != null) {
      PlatformPluginStorage storage = new PlatformPluginStorage(modelLocation);
      IEditorInput editorInput = new XtextReadonlyEditorInput(storage);
      IWorkbenchPage activePage = workbench.getActiveWorkbenchWindow().getActivePage();
      try {
        IEditorPart editor = IDE.openEditor(activePage, editorInput, editorID);
        selectAndReveal(editor, uri, crossReference, indexInList, select);
        return EditorUtils.getXtextEditor(editor);
      } catch (WrappedException e) {
        LOG.error("Error while opening editor part for EMF URI '" + uri + "'", e.getCause()); //$NON-NLS-1$ //$NON-NLS-2$
      } catch (PartInitException partInitException) {
        LOG.error("Error while opening editor part for EMF URI '" + uri + "'", partInitException); //$NON-NLS-1$ //$NON-NLS-2$
      }
    }
  }
  return result;
}
 

private void draw() {
	XtextEditor editor = EditorUtils.getActiveXtextEditor();
	if (editor != null && (hoveredElement != null || !selectedElements.isEmpty())) {
		ISourceViewer isv = editor.getInternalSourceViewer();
		styledText = isv.getTextWidget();
		drawSelection();
	} else {
		clear();
	}
}
 

/**
 * Constructor
 */
public CFGraph() {
	locFileProvider = new DefaultLocationInFileProvider();
	editor = EditorUtils.getActiveXtextEditor();
	styledText = editor.getInternalSourceViewer().getTextWidget();
	layoutDone = false;
}
 

@Override
public void open(IWorkbenchPage page) {
	try {
		IEditorInput input = EditorUtils.createEditorInput(storage);
		IEditorDescriptor editorDescriptor = IDE.getEditorDescriptor(storage.getName());
		IEditorPart opened = IDE.openEditor(page, input, editorDescriptor.getId());
		if (region != null && opened instanceof ITextEditor) {
			ITextEditor openedTextEditor = (ITextEditor) opened;
			openedTextEditor.selectAndReveal(region.getOffset(), region.getLength());
		}
	} catch (PartInitException e) {
		LOG.error(e.getMessage(), e);
	}
}
 

protected TextAttribute createTextAttribute(String id, TextStyle defaultTextStyle) {
	TextStyle textStyle = new TextStyle();
	preferencesAccessor.populateTextStyle(id, textStyle, defaultTextStyle);
	int style = textStyle.getStyle();
	Font fontFromFontData = EditorUtils.fontFromFontData(textStyle.getFontData());
	return new TextAttribute(EditorUtils.colorFromRGB(textStyle.getColor()), EditorUtils.colorFromRGB(textStyle
			.getBackgroundColor()), style, fontFromFontData);
}
 

public IEditorInput findOriginalSource(IEditorInput input) {
	IFile resource = ResourceUtil.getFile(input);
	if (resource == null) {
		return input;
	}

	IEditorInput original = findOriginalSourceForOuputFolderCopy(input);
	if (original != input) {
		return original;
	}

	IEclipseTrace trace = traceInformation.getTraceToSource(resource);
	if (trace == null) {
		return input;
	}

	for (ILocationInEclipseResource candidate : trace.getAllAssociatedLocations()) {
		if (languageInfo.equals(candidate.getLanguage())) {
			IStorage storage = candidate.getPlatformResource();
			if (storage != null) {
				return EditorUtils.createEditorInput(storage);
			}
		}
	}

	return input;
}
 

@Override
public Object execute(ExecutionEvent event) throws ExecutionException {
	try {
		syncUtil.totalSync(false);
		final XtextEditor editor = EditorUtils.getActiveXtextEditor(event);
		if (editor != null) {
			final ITextSelection selection = (ITextSelection) editor.getSelectionProvider().getSelection();
			final IXtextDocument document = editor.getDocument();
			XtextResource resource = document.priorityReadOnly(new IUnitOfWork<XtextResource, XtextResource>() {
				@Override
				public XtextResource exec(XtextResource state) throws Exception {
					return resourceCopier.loadIntoNewResourceSet(state);
				}
			});
			XExpression expression = expressionUtil.findSelectedExpression(resource, selection);
			if(expression != null) {
				ExtractVariableRefactoring introduceVariableRefactoring = refactoringProvider.get();
				if(introduceVariableRefactoring.initialize(editor, expression)) {
					ITextRegion region = locationInFileProvider.getFullTextRegion(expression);
					editor.selectAndReveal(region.getOffset(), region.getLength());
					ExtractVariableWizard wizard = new ExtractVariableWizard(introduceVariableRefactoring);
					RefactoringWizardOpenOperation_NonForking openOperation = new RefactoringWizardOpenOperation_NonForking(
							wizard);
					openOperation.run(editor.getSite().getShell(), "Extract Local Variable");
				}
			}
		}
	} catch (InterruptedException e) {
		return null;
	} catch (Exception exc) {
		LOG.error("Error during refactoring", exc);
		MessageDialog.openError(Display.getCurrent().getActiveShell(), "Error during refactoring", exc.getMessage()
				+ "\nSee log for details");
	}
	return null;
}
 

@Override
public Object execute(ExecutionEvent event) throws ExecutionException {
	XtextEditor editor = EditorUtils.getActiveXtextEditor(event);
	if (editor != null) {
		final IXtextDocument document = editor.getDocument();
		doOrganizeImports(document);
	}
	return null;
}
 

private XtextEditor getXtextEditor(IEditorPart openEditor) throws NoSuchFieldException, IllegalAccessException {
	XtextEditor xtextEditor = EditorUtils.getXtextEditor(openEditor);
	if (xtextEditor != null) {
		ISourceViewer sourceViewer = xtextEditor.getInternalSourceViewer();
		((ProjectionViewer) sourceViewer).doOperation(ProjectionViewer.EXPAND_ALL);
		return xtextEditor;
	} else if (openEditor instanceof ErrorEditorPart) {
		Field field = openEditor.getClass().getDeclaredField("error");
		field.setAccessible(true);
		throw new IllegalStateException("Couldn't open the editor.", ((Status) field.get(openEditor)).getException());
	} else {
		fail("Opened Editor with id:" + getEditorId() + ", is not an XtextEditor");
	}
	return null;
}
 

@Override
public Object execute(ExecutionEvent event) throws ExecutionException {
	XtextEditor editor = EditorUtils.getActiveXtextEditor(event);
	if (editor != null) {
		// Hack, would be nicer with document edits, but this way we don't loose auto edit
		StyledText textWidget = editor.getInternalSourceViewer().getTextWidget();
		Event e = new Event();
		e.character = replaceChar;
		e.type = SWT.KeyDown;
		e.doit = true;
		textWidget.notifyListeners(SWT.KeyDown, e);
	}
	return null;
}
 

@Override
public Object execute(ExecutionEvent event) throws ExecutionException {
	final XtextEditor activeXtextEditor = EditorUtils.getActiveXtextEditor(event);
	if (activeXtextEditor == null || !activeXtextEditor.isEditable()) {
		return null;
	}

	String clipboardText = ClipboardUtil.getTextFromClipboard();
	if (!Strings.isEmpty(clipboardText)) {
		JavaImportData javaImports = ClipboardUtil.getJavaImportsContent();
		doPasteJavaCode(activeXtextEditor, clipboardText, javaImports);
	}
	return null;
}
 

@Override
public Object execute(ExecutionEvent event) throws ExecutionException {
	try {
		syncUtil.totalSync(false);
		final XtextEditor editor = EditorUtils.getActiveXtextEditor(event);
		if (editor != null) {
			final ITextSelection selection = (ITextSelection) editor.getSelectionProvider().getSelection();
			final IXtextDocument document = editor.getDocument();
			XtextResource copiedResource = document.priorityReadOnly(new IUnitOfWork<XtextResource, XtextResource>() {
				@Override
				public XtextResource exec(XtextResource state) throws Exception {
					return resourceCopier.loadIntoNewResourceSet(state);
				}
			});
			List<XExpression> expressions = expressionUtil.findSelectedSiblingExpressions(copiedResource,
					selection);
			if (!expressions.isEmpty()) {
				ExtractMethodRefactoring extractMethodRefactoring = refactoringProvider.get();
				if (extractMethodRefactoring.initialize(editor, expressions, true)) {
					updateSelection(editor, expressions);
					ExtractMethodWizard wizard = wizardFactory.create(extractMethodRefactoring);
					RefactoringWizardOpenOperation_NonForking openOperation = new RefactoringWizardOpenOperation_NonForking(
							wizard);
					openOperation.run(editor.getSite().getShell(), "Extract Method");
				}
			}
		}
	} catch (InterruptedException e) {
		return null;
	} catch (Exception exc) {
		LOG.error("Error during refactoring", exc);
		MessageDialog.openError(Display.getCurrent().getActiveShell(), "Error during refactoring", exc.getMessage()
				+ "\nSee log for details");
	}
	return null;
}
 

public XtendFormatterPreview forEmbeddedEditor(EmbeddedEditor editorHandle) {
	if (this.editorHandle != null) {
		throw new IllegalStateException("This formatter preview is already binded to an embedet editor");
	}
	this.editorHandle = editorHandle;
	this.modelAccess = editorHandle.createPartialEditor();
	this.marginPainter = new MarginPainter(editorHandle.getViewer());
	final RGB rgb = PreferenceConverter.getColor(preferenceStoreAccess.getPreferenceStore(),
			AbstractDecoratedTextEditorPreferenceConstants.EDITOR_PRINT_MARGIN_COLOR);
	marginPainter.setMarginRulerColor(EditorUtils.colorFromRGB(rgb));
	editorHandle.getViewer().addPainter(marginPainter);
	return this;
}
 

@Override
public Object execute(final ExecutionEvent event) throws ExecutionException {
  XtextEditor xtextEditor = EditorUtils.getActiveXtextEditor(event);
  if (xtextEditor != null && xtextEditor.getEditorInput() instanceof XtextReadonlyEditorInput) {
    return null;
  }
  return super.execute(event);
}
 

@Override
public IResource getLaunchableResource(IEditorPart editorpart) {
	final XtextEditor xtextEditor = EditorUtils.getXtextEditor(editorpart);
	if (xtextEditor != null) {
		return xtextEditor.getResource();
	}
	return null;
}
 

@Override
public void launch(IEditorPart editor, String mode) {
	final XtextEditor xtextEditor = EditorUtils.getXtextEditor(editor);
	final ISelection selection = xtextEditor.getSelectionProvider().getSelection();
	if (selection instanceof ITextSelection) {
		final ITextSelection sel = (ITextSelection) selection;
		final EObject obj = xtextEditor.getDocument().readOnly(resource -> {
			final IParseResult parseRes = resource.getParseResult();
			if (parseRes == null) {
				return null;
			}
			final ICompositeNode rootNode = parseRes.getRootNode();
			final ILeafNode node = NodeModelUtils.findLeafNodeAtOffset(rootNode, sel.getOffset());
			return NodeModelUtils.findActualSemanticObjectFor(node);
		});
		if (obj != null) {
			final EObject elt = EcoreUtil2.getContainerOfType(obj, getValidEObjectType());
			if (elt != null) {
				searchAndLaunch(mode, elt);
				return;
			}
		}
	} else if (selection != null) {
		launch(selection, mode);
		return;
	}
	// Default launching
	searchAndLaunch(mode, xtextEditor.getResource());
}
 

@Override
public Object execute(ExecutionEvent event) throws ExecutionException {
	final XtextEditor activeXtextEditor = EditorUtils.getActiveXtextEditor(event);
	if (activeXtextEditor == null) {
		return null;
	}
	final IXtextDocument doc = activeXtextEditor.getDocument();
	final ITextSelection selection = (ITextSelection) activeXtextEditor.getSelectionProvider().getSelection();
	final IRegion region = new Region(selection.getOffset(), selection.getLength());
	this.formatterProvider.get().format(doc, region);
	return null;
}
 

protected IEditorPart openDefaultEditor(IStorage storage, URI uri) throws PartInitException {
	IEditorInput editorInput = EditorUtils.createEditorInput(storage); 
	IWorkbenchPage page = getWorkbench().getActiveWorkbenchWindow().getActivePage();
	return IDE.openEditor(page, editorInput, PlatformUI.getWorkbench().getEditorRegistry().getDefaultEditor(
			uri.lastSegment()).getId());
}