URI uri = new URI(tf);
	try {
		IFileStore fs = EFS.getStore(uri);
		IEditorInput ei = new FileStoreEditorInput(fs);
		IWorkbenchWindow window = PlatformUI.getWorkbench().getActiveWorkbenchWindow();
		IWorkbenchPage page = window.getActivePage();
		try {
			page.openEditor(ei, RTFEditor.ID);
		} catch (PartInitException e1) {
			e1.printStackTrace();
		}
	} catch (CoreException e2) {
		e2.printStackTrace();
	}

	private static ITextDocument doc = null;
	private static ITextDocument getDoc(Shell shell) {
		if (doc == null) {
			IOfficeApplication app = EditorCorePlugin.getDefault().getManagedLocalOfficeApplication();
			if(!app.isActive()) {
				//Shell shell = Display.getCurrent().getActiveShell();
				IStatus status = NOAUIPlugin.startLocalOfficeApplication(shell, app);
				if (status.getSeverity() != IStatus.ERROR) {
					try {
						doc = (ITextDocument)app.getDocumentService().constructNewDocument(IDocument.WRITER, DocumentDescriptor.DEFAULT_HIDDEN);
						
					} catch (NOAException e) {
						e.printStackTrace();
					} catch (OfficeApplicationException e) {
						e.printStackTrace();
					}
				}
			}
		}
		return doc;
	}
	
	@Override
	public void createPartControl(Composite parent) {
		ITextDocument doc = getDoc(parent.getShell());
		IEditorInput ei = getEditorInput();
		FileStoreEditorInput fsei = (FileStoreEditorInput) ei.getAdapter(FileStoreEditorInput.class);
		URI uri = fsei.getURI();
		String url = uri.toString();
		//now I should open the url in doc
		doc.????(url);

public class RTFEditor extends EditorPart {
	public static final String ID = "it.condarelli.rcp.yw.rtfeditor"; 
	private Composite top = null;

	private static int usecount = 0;
	private static ITextDocument doc = null;
	private static IOfficeApplication app = null;
	
	public RTFEditor() {
		super();
		usecount++;
	}

	@Override
	public void dispose() {
		if (doc != null) {
			doc.close();
			doc = null;
		}
		if (usecount > 0) {
			if (--usecount == 0) {
				if (app != null) {
					if (app.isActive())
					try {
						app.deactivate();
					} catch (OfficeApplicationException e) {
						e.printStackTrace();
					}
					app.dispose();
					app = null;
				}
			}
		}
		super.dispose();
	}

	@Override
	public void doSave(IProgressMonitor monitor) {
		if (doc != null) {
			if (doc.isModified()) {
				IPersistenceService ps = doc.getPersistenceService();
				try {
					ps.store();
				} catch (DocumentException e) {
					e.printStackTrace();
				}
			}
		}
	}

	@Override
	public void doSaveAs() {
	}

	@Override
	public void init(IEditorSite site, IEditorInput input)
			throws PartInitException {
		setSite(site);
		setInput(input);
	}

	@Override
	public boolean isDirty() {
		if (doc != null) {
			return doc.isModified();
		}
		return false;
	}

	@Override
	public boolean isSaveAsAllowed() {
		return false;
	}

	@Override
	public void createPartControl(Composite parent) {
		IOfficeApplication a =	EditorCorePlugin.getDefault().getManagedLocalOfficeApplication();
		if(!a.isActive()) {
			app = null;
			Shell shell = parent.getShell();
			IStatus status = NOAUIPlugin.startLocalOfficeApplication(shell, a);
			if (status.getSeverity() != IStatus.ERROR) {
				app = a;
			}
		}
		if (app != null) {
			GridData gridData = new GridData();
			gridData.horizontalAlignment = GridData.FILL;
			gridData.grabExcessHorizontalSpace = true;
			gridData.grabExcessVerticalSpace = true;
			gridData.verticalAlignment = GridData.FILL;
			top = new Composite(parent, SWT.NO_BACKGROUND | SWT.EMBEDDED);
			top.setLayout(new GridLayout());
			Frame frame = SWT_AWT.new_Frame(top);
			try {
				IFrame ifr = app.getDesktopService().constructNewOfficeFrame(frame);
				IEditorInput ei = getEditorInput();
				FileStoreEditorInput fsei = (FileStoreEditorInput) ei.getAdapter(FileStoreEditorInput.class);
				URI uri = fsei.getURI();
				String url = uri.toString();
				try {
					IDocumentService s = app.getDocumentService();
					IDocument d = s.loadDocument(ifr, url);
					if (d instanceof ITextDocument) {
						doc = (ITextDocument) d;
						try {
							URL u = uri.toURL();
							String t = u.getFile();
							int i = t.lastIndexOf('/');
							t = t.substring(i+1);
                                			setPartName(t);
                        			} catch (MalformedURLException e) {}
					}
				} catch (DocumentException e1) {
					e1.printStackTrace();
				} catch (OfficeApplicationException e1) {
					e1.printStackTrace();
				}
			} catch (DesktopException e) {
				e.printStackTrace();
			} catch (OfficeApplicationException e) {
				e.printStackTrace();
			}
		}
	}

	@Override
	public void setFocus() {
		doc.getFrame().setFocus();
	}

}

	String tf = "file:///C:/what/ever/path/to/your/file.rtf";
	try {
		URI uri = new URI(tf);
		try {
			IFileStore fs = EFS.getStore(uri);
			IEditorInput ei = new FileStoreEditorInput(fs);
			IWorkbenchWindow window = PlatformUI.getWorkbench().getActiveWorkbenchWindow();
			IWorkbenchPage page = window.getActivePage();
			try {
				page.openEditor(ei, RTFEditor.ID);
			} catch (PartInitException e1) {
				e1.printStackTrace();
			}
		} catch (CoreException e2) {
			e2.printStackTrace();
		}
	} catch (URISyntaxException e2) {
		e2.printStackTrace();
	}