List of usage examples for org.eclipse.jface.viewers TreeViewer addTreeListener
public void addTreeListener(ITreeViewerListener listener)
From source file:com.safi.workshop.sqlexplorer.plugin.views.DatabaseStructureView.java
License:Open Source License
/** * Add a new session to the database structure view. This will create a new tab for the * session.// www . jav a 2 s . c o m * * @param session */ private void addSession(final MetaDataSession session) throws SQLCannotConnectException { if (_allSessions.contains(session)) return; try { session.getMetaData(); session.setAutoCommit(true); } catch (SQLCannotConnectException e) { SQLExplorerPlugin.error(e); throw e; } catch (SQLException e) { SQLExplorerPlugin.error(e); MessageDialog.openError(getSite().getShell(), "Cannot connect", e.getMessage()); } DatabaseNode rootNode = session.getRoot(); if (rootNode == null) return; _allSessions.add(session); if (_filterAction != null) { _filterAction.setEnabled(true); } if (_tabFolder == null || _tabFolder.isDisposed()) { clearParent(); // create tab folder for different sessions _tabFolder = new CTabFolder(_parent, SWT.TOP | SWT.CLOSE); // add listener to keep both views on the same active tab _tabFolder.addSelectionListener(new SelectionAdapter() { @Override public void widgetSelected(SelectionEvent e) { // set the selected node in the detail view. DatabaseDetailView detailView = (DatabaseDetailView) getSite().getPage() .findView(SqlexplorerViewConstants.SQLEXPLORER_DBDETAIL); synchronizeDetailView(detailView); } }); // Set up a gradient background for the selected tab Display display = getSite().getShell().getDisplay(); _tabFolder.setSelectionBackground( new Color[] { display.getSystemColor(SWT.COLOR_WHITE), new Color(null, 211, 225, 250), new Color(null, 175, 201, 246), IConstants.TAB_BORDER_COLOR }, new int[] { 25, 50, 75 }, true); // Add a listener to handle the close button on each tab _tabFolder.addCTabFolder2Listener(new CTabFolder2Adapter() { @Override public void close(CTabFolderEvent event) { CTabItem tabItem = (CTabItem) event.item; TabData tabData = (TabData) tabItem.getData(); _allSessions.remove(tabData.session); event.doit = true; } }); _parent.layout(); _parent.redraw(); } // create tab final CTabItem tabItem = new CTabItem(_tabFolder, SWT.NULL); TabData tabData = new TabData(); tabItem.setData(tabData); tabData.session = session; // set tab text String labelText = session.getUser().getDescription(); tabItem.setText(labelText); // create composite for our outline Composite composite = new Composite(_tabFolder, SWT.NULL); composite.setLayout(new FillLayout()); tabItem.setControl(composite); // create outline final TreeViewer treeViewer = new TreeViewer(composite, SWT.V_SCROLL | SWT.H_SCROLL | SWT.MULTI | SWT.BORDER); tabData.treeViewer = treeViewer; // add drag support // TODO improve drag support options Transfer[] transfers = new Transfer[] { TableNodeTransfer.getInstance() }; treeViewer.addDragSupport(DND.DROP_COPY, transfers, new DragSourceListener() { public void dragFinished(DragSourceEvent event) { System.out.println("$drag finished"); TableNodeTransfer.getInstance().setSelection(null); } public void dragSetData(DragSourceEvent event) { Object sel = ((IStructuredSelection) treeViewer.getSelection()).getFirstElement(); event.data = sel; } public void dragStart(DragSourceEvent event) { event.doit = !treeViewer.getSelection().isEmpty(); if (event.doit) { Object sel = ((IStructuredSelection) treeViewer.getSelection()).getFirstElement(); if (!(sel instanceof TableNode)) { event.doit = false; } else { TableNode tn = (TableNode) sel; TableNodeTransfer.getInstance().setSelection(tn); if (!tn.isTable()) event.doit = false; } } } }); // use hash lookup to improve performance treeViewer.setUseHashlookup(true); // add content and label provider treeViewer.setContentProvider(new DBTreeContentProvider()); treeViewer.setLabelProvider(new DBTreeLabelProvider()); // set input session treeViewer.setInput(rootNode); // add selection change listener, so we can update detail view as // required. treeViewer.addSelectionChangedListener(new ISelectionChangedListener() { public void selectionChanged(SelectionChangedEvent ev) { // set the selected node in the detail view. DatabaseDetailView detailView = (DatabaseDetailView) getSite().getPage() .findView(SqlexplorerViewConstants.SQLEXPLORER_DBDETAIL); synchronizeDetailView(detailView); } }); // bring detail to front on doubleclick of node treeViewer.addDoubleClickListener(new IDoubleClickListener() { public void doubleClick(DoubleClickEvent event) { try { // find view DatabaseDetailView detailView = (DatabaseDetailView) getSite().getPage() .findView(SqlexplorerViewConstants.SQLEXPLORER_DBDETAIL); if (detailView == null) { getSite().getPage().showView(SqlexplorerViewConstants.SQLEXPLORER_DBDETAIL); } getSite().getPage().bringToTop(detailView); synchronizeDetailView(detailView); } catch (Exception e) { // fail silent } } }); // add expand/collapse listener treeViewer.addTreeListener(new ITreeViewerListener() { public void treeCollapsed(TreeExpansionEvent event) { // refresh the node to change image INode node = (INode) event.getElement(); node.setExpanded(false); TreeViewer viewer = (TreeViewer) event.getSource(); viewer.update(node, null); } public void treeExpanded(TreeExpansionEvent event) { // refresh the node to change image INode node = (INode) event.getElement(); node.setExpanded(true); TreeViewer viewer = (TreeViewer) event.getSource(); viewer.update(node, null); } }); // set new tab as the active one _tabFolder.setSelection(_tabFolder.getItemCount() - 1); // update detail view DatabaseDetailView detailView = (DatabaseDetailView) getSite().getPage() .findView(SqlexplorerViewConstants.SQLEXPLORER_DBDETAIL); if (detailView != null) { // synchronze detail view with new session synchronizeDetailView(detailView); // bring detail to top of the view stack getSite().getPage().bringToTop(detailView); } // refresh view composite.layout(); _tabFolder.layout(); _tabFolder.redraw(); // bring this view to top of the view stack, above detail if needed.. getSite().getPage().bringToTop(this); // add context menu final DBTreeActionGroup actionGroup = new DBTreeActionGroup(treeViewer); MenuManager menuManager = new MenuManager("DBTreeContextMenu"); menuManager.setRemoveAllWhenShown(true); Menu contextMenu = menuManager.createContextMenu(treeViewer.getTree()); treeViewer.getTree().setMenu(contextMenu); menuManager.addMenuListener(new IMenuListener() { public void menuAboutToShow(IMenuManager manager) { actionGroup.fillContextMenu(manager); } }); }
From source file:eu.geclipse.ui.providers.GridModelContentProvider.java
License:Open Source License
/** * Called when a new tree viewer was set and/or an old viewer * was unset./* w w w. ja v a 2s .c o m*/ * * @param oldViewer The old viewer. * @param newViewer The new viewer. */ protected void treeViewerChanged(final TreeViewer oldViewer, final TreeViewer newViewer) { if (oldViewer != newViewer) { this.treeViewer = newViewer; if (oldViewer != null) { oldViewer.removeTreeListener(this); } if (newViewer != null) { newViewer.addTreeListener(this); } } }
From source file:net.sourceforge.sqlexplorer.plugin.views.DatabaseStructureView.java
License:Open Source License
/** * Add a new session to the database structure view. This will create a new tab for the session. * /* ww w . j av a 2 s. co m*/ * @param session */ private void addSession(final MetaDataSession session) throws SQLCannotConnectException { if (_allSessions.contains(session)) { return; } try { session.getMetaData(); session.setAutoCommit(true); } catch (SQLCannotConnectException e) { SQLExplorerPlugin.error(e); throw e; } catch (SQLException e) { SQLExplorerPlugin.error(e); MessageDialog.openError(getSite().getShell(), "Cannot connect", e.getMessage()); } DatabaseNode rootNode = session.getRoot(); if (rootNode == null) { return; } _allSessions.add(session); if (_filterAction != null) { _filterAction.setEnabled(true); } if (_tabFolder == null || _tabFolder.isDisposed()) { clearParent(); // create tab folder for different sessions _tabFolder = new CTabFolder(_parent, SWT.TOP | SWT.CLOSE); // add listener to keep both views on the same active tab _tabFolder.addSelectionListener(new SelectionAdapter() { @Override public void widgetSelected(SelectionEvent e) { // set the selected node in the detail view. DatabaseDetailView detailView = (DatabaseDetailView) getSite().getPage() .findView(SqlexplorerViewConstants.SQLEXPLORER_DBDETAIL); synchronizeDetailView(detailView); } }); // Set up a gradient background for the selected tab Display display = getSite().getShell().getDisplay(); _tabFolder.setSelectionBackground( new Color[] { display.getSystemColor(SWT.COLOR_WHITE), new Color(null, 211, 225, 250), new Color(null, 175, 201, 246), IConstants.TAB_BORDER_COLOR }, new int[] { 25, 50, 75 }, true); // Add a listener to handle the close button on each tab _tabFolder.addCTabFolder2Listener(new CTabFolder2Adapter() { @Override public void close(CTabFolderEvent event) { CTabItem tabItem = (CTabItem) event.item; TabData tabData = (TabData) tabItem.getData(); _allSessions.remove(tabData.session); event.doit = true; } }); _parent.layout(); _parent.redraw(); } // create tab final CTabItem tabItem = new CTabItem(_tabFolder, SWT.NULL); TabData tabData = new TabData(); tabItem.setData(tabData); tabData.session = session; // set tab text String labelText = session.getUser().getDescription(); tabItem.setText(labelText); // create composite for our outline Composite composite = new Composite(_tabFolder, SWT.NULL); composite.setLayout(new FillLayout()); tabItem.setControl(composite); // create outline final TreeViewer treeViewer = new TreeViewer(composite, SWT.V_SCROLL | SWT.H_SCROLL | SWT.MULTI | SWT.BORDER); tabData.treeViewer = treeViewer; // add drag support // TODO improve drag support options Transfer[] transfers = new Transfer[] { TableNodeTransfer.getInstance() }; treeViewer.addDragSupport(DND.DROP_COPY, transfers, new DragSourceListener() { public void dragFinished(DragSourceEvent event) { System.out.println("$drag finished"); TableNodeTransfer.getInstance().setSelection(null); } public void dragSetData(DragSourceEvent event) { Object sel = ((IStructuredSelection) treeViewer.getSelection()).getFirstElement(); event.data = sel; } public void dragStart(DragSourceEvent event) { event.doit = !treeViewer.getSelection().isEmpty(); if (event.doit) { Object sel = ((IStructuredSelection) treeViewer.getSelection()).getFirstElement(); if (!(sel instanceof TableNode)) { event.doit = false; } else { TableNode tn = (TableNode) sel; TableNodeTransfer.getInstance().setSelection(tn); if (!tn.isTable()) { event.doit = false; } } } } }); // use hash lookup to improve performance treeViewer.setUseHashlookup(true); // add content and label provider treeViewer.setContentProvider(new DBTreeContentProvider()); treeViewer.setLabelProvider(new DBTreeLabelProvider()); // set input session treeViewer.setInput(rootNode); // add selection change listener, so we can update detail view as // required. treeViewer.addSelectionChangedListener(new ISelectionChangedListener() { public void selectionChanged(SelectionChangedEvent ev) { // set the selected node in the detail view. DatabaseDetailView detailView = (DatabaseDetailView) getSite().getPage() .findView(SqlexplorerViewConstants.SQLEXPLORER_DBDETAIL); synchronizeDetailView(detailView); } }); // bring detail to front on doubleclick of node treeViewer.addDoubleClickListener(new IDoubleClickListener() { public void doubleClick(DoubleClickEvent event) { try { // find view DatabaseDetailView detailView = (DatabaseDetailView) getSite().getPage() .findView(SqlexplorerViewConstants.SQLEXPLORER_DBDETAIL); if (detailView == null) { getSite().getPage().showView(SqlexplorerViewConstants.SQLEXPLORER_DBDETAIL); } getSite().getPage().bringToTop(detailView); synchronizeDetailView(detailView); } catch (Exception e) { // fail silent } } }); // add expand/collapse listener treeViewer.addTreeListener(new ITreeViewerListener() { public void treeCollapsed(TreeExpansionEvent event) { // refresh the node to change image INode node = (INode) event.getElement(); node.setExpanded(false); TreeViewer viewer = (TreeViewer) event.getSource(); viewer.update(node, null); } public void treeExpanded(TreeExpansionEvent event) { // refresh the node to change image INode node = (INode) event.getElement(); node.setExpanded(true); TreeViewer viewer = (TreeViewer) event.getSource(); viewer.update(node, null); } }); // set new tab as the active one _tabFolder.setSelection(_tabFolder.getItemCount() - 1); // update detail view DatabaseDetailView detailView = (DatabaseDetailView) getSite().getPage() .findView(SqlexplorerViewConstants.SQLEXPLORER_DBDETAIL); if (detailView != null) { // synchronze detail view with new session synchronizeDetailView(detailView); // bring detail to top of the view stack getSite().getPage().bringToTop(detailView); } // refresh view composite.layout(); _tabFolder.layout(); _tabFolder.redraw(); // bring this view to top of the view stack, above detail if needed.. getSite().getPage().bringToTop(this); // add context menu final DBTreeActionGroup actionGroup = new DBTreeActionGroup(treeViewer); MenuManager menuManager = new MenuManager("DBTreeContextMenu"); menuManager.setRemoveAllWhenShown(true); Menu contextMenu = menuManager.createContextMenu(treeViewer.getTree()); treeViewer.getTree().setMenu(contextMenu); menuManager.addMenuListener(new IMenuListener() { public void menuAboutToShow(IMenuManager manager) { actionGroup.fillContextMenu(manager); } }); // if (sessionSelectionMap.containsKey(tabData.session)) { // tabData.treeViewer.setSelection(sessionSelectionMap.get(tabData.session)); // sessionSelectionMap.remove(tabData.session); // _allSessions.remove(tabData.session); // } }
From source file:org.chromium.debug.ui.liveedit.LiveEditDiffViewer.java
License:Open Source License
private void configureTreeViewer(TreeViewer treeViewer, TreeViewer opposite, Side side) { treeViewer.setContentProvider(new FunctionTreeContentProvider()); treeViewer.setLabelProvider(new LabelProviderImpl(side)); treeViewer.addSelectionChangedListener(new SelectionChangeListener(opposite)); treeViewer.addTreeListener(new TreeListenerImpl(opposite)); treeViewer.getTree().getVerticalBar().addListener(SWT.Selection, new TreeScrollBarListener(opposite)); }
From source file:org.cs3.pdt.common.search.PrologSearchResultPage.java
License:Open Source License
@Override protected void configureTreeViewer(TreeViewer viewer) { viewer.setLabelProvider(new DecoratingPrologSearchLabelProvider(new PrologSearchLabelProvider())); ColumnViewerToolTipSupport.enableFor(viewer, ToolTip.NO_RECREATE); // viewer.setLabelProvider(new DecoratingLabelProvider(new PrologSearchLabelProvider(), // PlatformUI.getWorkbench().getDecoratorManager().getLabelDecorator())); fContentProvider = new PrologSearchTreeContentProvider(this); viewer.setContentProvider(fContentProvider); viewer.addDoubleClickListener(new IDoubleClickListener() { @Override//from w ww .j av a 2 s .c om public void doubleClick(DoubleClickEvent event) { ISelection selection = event.getSelection(); if (selection instanceof TreeSelection) { Object firstElement = ((TreeSelection) selection).getFirstElement(); Match m = null; if (firstElement instanceof SearchModuleElement) { m = ((SearchModuleElement) firstElement).getMatch(); } else if (firstElement instanceof SearchPredicateElement) { m = ((SearchPredicateElement) firstElement).getFirstOccurrence(); } else if (firstElement instanceof SearchFileTreeElement) { m = ((SearchFileTreeElement) firstElement).getFirstMatch(); } if (m != null) { final Match match = m; UIJob job = new UIJob("Show Match") { @Override public IStatus runInUIThread(IProgressMonitor monitor) { try { showMatch(match, match.getOffset(), match.getLength(), true); } catch (PartInitException e) { Debug.report(e); } return Status.OK_STATUS; } }; job.schedule(); } } } }); viewer.addTreeListener(new ITreeViewerListener() { @Override public void treeExpanded(TreeExpansionEvent event) { final AbstractTreeViewer treeViewer = event.getTreeViewer(); PrologSearchTreeContentProvider contentProvider = (PrologSearchTreeContentProvider) treeViewer .getContentProvider(); final Object element = event.getElement(); int expandLevel = 1; Object[] children = contentProvider.getChildren(element); while (children.length == 1) { expandLevel++; children = contentProvider.getChildren(children[0]); } if (expandLevel > 1) { final int finalExpandLevel = expandLevel; treeViewer.getControl().getDisplay().asyncExec(new Runnable() { @Override public void run() { treeViewer.expandToLevel(element, finalExpandLevel); } }); } } @Override public void treeCollapsed(TreeExpansionEvent event) { } }); }
From source file:org.eclipse.emf.cdo.explorer.ui.repositories.CDORepositoriesView.java
License:Open Source License
@Override protected void initViewer() { super.initViewer(); TreeViewer viewer = getViewer(); viewer.addTreeListener(activityDetector); viewer.setComparator(null);//ww w . ja v a 2 s. co m UIUtil.addDragSupport(viewer); Tree tree = viewer.getTree(); tree.addMouseListener(activityDetector); tree.addKeyListener(activityDetector); tree.getDisplay().timerExec(getRepositoryTimeoutMillis(), activityDetector); }
From source file:org.eclipse.emf.cdo.ui.CDOTreeExpansionAgent.java
License:Open Source License
public CDOTreeExpansionAgent(final CDOView view, final TreeViewer viewer) { CheckUtil.checkArg(view, "view"); CheckUtil.checkArg(viewer, "viewer"); this.view = view; this.viewer = viewer; final Tree tree = viewer.getTree(); if (!tree.isDisposed()) { tree.getDisplay().syncExec(new Runnable() { public void run() { for (Object element : viewer.getExpandedElements()) { addExpandedElement(element); }//from ww w . j ava2 s. c om view.addListener(listener); viewer.addTreeListener(listener); viewer.getTree().addDisposeListener(listener); } }); } }
From source file:org.eclipse.mylyn.internal.pde.ui.PdeUiBridge.java
License:Open Source License
/** * HACK: use a lot of reflection to get the TreeViewer *//* www . ja v a 2s .c om*/ @Override public List<TreeViewer> getContentOutlineViewers(IEditorPart editor) { if (editor instanceof PDEFormEditor) { PDESourcePage sp = null; List<TreeViewer> viewers = new ArrayList<TreeViewer>(2); if ((sp = (PDESourcePage) ((PDEFormEditor) editor).findPage(PluginInputContext.CONTEXT_ID)) != null) { ISortableContentOutlinePage page = sp.getContentOutline(); if (page != null && page.getControl() != null) { try { if (page instanceof SourceOutlinePage) { // get the tree viewer for the outline Class<?> clazz2 = page.getClass(); Field field2 = clazz2.getDeclaredField("viewer"); //$NON-NLS-1$ field2.setAccessible(true); Object f2 = field2.get(page); if (f2 != null && f2 instanceof TreeViewer) { viewers.add((TreeViewer) f2); } } } catch (Exception e) { StatusHandler.log(new Status(IStatus.ERROR, PdeUiBridgePlugin.ID_PLUGIN, "Failed to get tree viewers", e)); //$NON-NLS-1$ return null; } } } try { // get the current page of the outline Class<?> clazz = PDEFormEditor.class; Field field = null; try { field = clazz.getDeclaredField("formOutline"); //$NON-NLS-1$ } catch (NoSuchFieldException e) { field = clazz.getDeclaredField("fFormOutline"); //$NON-NLS-1$ } field.setAccessible(true); Object f = field.get(editor); if (f != null && f instanceof FormOutlinePage) { // get the tree viewer for the outline Class<?> clazz2 = FormOutlinePage.class; Field field2 = null; try { field2 = clazz2.getDeclaredField("treeViewer"); //$NON-NLS-1$ } catch (NoSuchFieldException e) { field2 = clazz2.getDeclaredField("fTreeViewer"); //$NON-NLS-1$ } field2.setAccessible(true); Object f2 = field2.get(f); if (f2 != null && f2 instanceof TreeViewer) { TreeViewer treeViewer = (TreeViewer) f2; viewers.add(treeViewer); } } } catch (Exception e) { StatusHandler.log( new Status(IStatus.ERROR, PdeUiBridgePlugin.ID_PLUGIN, "Could not get PDE outline", e)); //$NON-NLS-1$ return Collections.emptyList(); } // add a listener so that when the selection changes, the view is // refreshed to attempt to keep the ui model the same as the // taskscape one for (TreeViewer viewer : viewers) { viewer.addSelectionChangedListener(treeSelectionChangedListener); viewer.addTreeListener(treeSelectionChangedListener); } return viewers; } return Collections.emptyList(); }
From source file:org.eclipse.sapphire.ui.form.editors.masterdetails.MasterDetailsEditorPage.java
License:Open Source License
private FilteredTree createContentOutline(final Composite parent, final MasterDetailsContentOutline outline, final boolean addBorders) { final int treeStyle = (addBorders ? SWT.BORDER : SWT.NONE) | SWT.MULTI; final ContentOutlineFilteredTree filteredTree = new ContentOutlineFilteredTree(parent, treeStyle, outline); final TreeViewer treeViewer = filteredTree.getViewer(); final Tree tree = treeViewer.getTree(); final ITreeContentProvider contentProvider = new ITreeContentProvider() { private final Listener listener = new Listener() { @Override/*from w w w. ja v a2s .co m*/ public void handle(final org.eclipse.sapphire.Event event) { if (event instanceof PartEvent) { final SapphirePart part = ((PartEvent) event).part(); if (part instanceof MasterDetailsContentNode) { final MasterDetailsContentNode node = (MasterDetailsContentNode) part; if (event instanceof PartVisibilityEvent) { final MasterDetailsContentNode parent = node.getParentNode(); if (parent == outline.getRoot()) { treeViewer.refresh(); } else { treeViewer.refresh(parent); } } else { if (node.visible()) { if (event instanceof LabelChangedEvent || event instanceof ImageChangedEvent) { Display.getCurrent().asyncExec(new TreeViewerUpdateJob(treeViewer, node)); } else if (event instanceof NodeListEvent) { treeViewer.refresh(node); } } } } } } }; private void attach(final List<MasterDetailsContentNode> nodes) { for (MasterDetailsContentNode node : nodes) { node.attach(this.listener); } } private void detach(final List<MasterDetailsContentNode> nodes) { for (MasterDetailsContentNode node : nodes) { node.detach(this.listener); detach(node.nodes()); } } public Object[] getElements(final Object inputElement) { final MasterDetailsContentNodeList nodes = outline.getRoot().nodes(); attach(nodes); return nodes.visible().toArray(); } public Object[] getChildren(final Object parentElement) { final MasterDetailsContentNodeList nodes = ((MasterDetailsContentNode) parentElement).nodes(); attach(nodes); return nodes.visible().toArray(); } public Object getParent(final Object element) { return ((MasterDetailsContentNode) element).getParentNode(); } public boolean hasChildren(final Object parentElement) { final MasterDetailsContentNodeList nodes = ((MasterDetailsContentNode) parentElement).nodes(); attach(nodes); return !nodes.visible().isEmpty(); } public void inputChanged(final Viewer viewer, final Object oldInput, final Object newInput) { } public void dispose() { detach(outline.getRoot().nodes()); } }; final LabelProvider labelProvider = new LabelProvider() { private final Map<ImageDescriptor, Image> images = new HashMap<ImageDescriptor, Image>(); @Override public String getText(final Object element) { return ((MasterDetailsContentNode) element).getLabel(); } @Override public Image getImage(final Object element) { return getImage((MasterDetailsContentNode) element); } private Image getImage(final MasterDetailsContentNode node) { final ImageDescriptor imageDescriptor = node.getImage(); Image image = this.images.get(imageDescriptor); if (image == null) { image = imageDescriptor.createImage(); this.images.put(imageDescriptor, image); } return image; } @Override public void dispose() { for (Image image : this.images.values()) { image.dispose(); } } }; new SapphireToolTip(tree) { protected Object getToolTipArea(final Event event) { return treeViewer.getCell(new Point(event.x, event.y)); } protected boolean shouldCreateToolTip(Event event) { if (!super.shouldCreateToolTip(event)) { return false; } setShift(new Point(0, 20)); tree.setToolTipText(""); boolean res = false; final MasterDetailsContentNode node = getNode(event); if (node != null) { res = !node.validation().ok(); } return res; } private MasterDetailsContentNode getNode(final Event event) { final TreeItem item = tree.getItem(new Point(event.x, event.y)); if (item == null) { return null; } else { return (MasterDetailsContentNode) item.getData(); } } protected void afterHideToolTip(Event event) { super.afterHideToolTip(event); // Clear the restored value else this could be a source of a leak if (event != null && event.widget != treeViewer.getControl()) { treeViewer.getControl().setFocus(); } } @Override protected void createContent(final Event event, final Composite parent) { final MasterDetailsContentNode node = getNode(event); parent.setLayout(glayout(1)); SapphireFormText text = new SapphireFormText(parent, SWT.NO_FOCUS); text.setLayoutData(gdfill()); final org.eclipse.sapphire.modeling.Status validation = node.validation(); final List<org.eclipse.sapphire.modeling.Status> items = gather(validation); final StringBuffer buffer = new StringBuffer(); buffer.append("<form>"); final int count = items.size(); int i = 0; for (org.eclipse.sapphire.modeling.Status item : items) { final String imageKey = (item.severity() == org.eclipse.sapphire.modeling.Status.Severity.ERROR ? "error" : "warning"); buffer.append("<li style=\"image\" value=\"" + imageKey + "\">" + escapeForXml(item.message()) + "</li>"); i++; if (count > 10 && i == 9) { break; } } if (count > 10) { final String msg = NLS.bind(Resources.problemsOverflowMessage, numberToString(count - 9)); final String imageKey = (validation .severity() == org.eclipse.sapphire.modeling.Status.Severity.ERROR ? "error" : "warning"); buffer.append("<br/><li style=\"image\" value=\"" + imageKey + "\">" + msg + "</li>"); } buffer.append("</form>"); text.setText(buffer.toString(), true, false); text.setImage("error", ImageData.createFromClassLoader(SwtResourceCache.class, "Error.png")); text.setImage("warning", ImageData.createFromClassLoader(SwtResourceCache.class, "Warning.png")); } private String numberToString(final int number) { switch (number) { case 2: return Resources.two; case 3: return Resources.three; case 4: return Resources.four; case 5: return Resources.five; case 6: return Resources.six; case 7: return Resources.seven; case 8: return Resources.eight; case 9: return Resources.nine; default: return String.valueOf(number); } } private List<org.eclipse.sapphire.modeling.Status> gather( final org.eclipse.sapphire.modeling.Status status) { final List<org.eclipse.sapphire.modeling.Status> items = new ArrayList<org.eclipse.sapphire.modeling.Status>(); gather(status, items); return items; } private void gather(final org.eclipse.sapphire.modeling.Status status, final List<org.eclipse.sapphire.modeling.Status> items) { if (status.children().isEmpty()) { items.add(status); } else { for (org.eclipse.sapphire.modeling.Status child : status.children()) { gather(child, items); } } } }; treeViewer.setContentProvider(contentProvider); treeViewer.setLabelProvider(labelProvider); treeViewer.setInput(new Object()); final MutableReference<Boolean> ignoreSelectionChange = new MutableReference<Boolean>(false); final MutableReference<Boolean> ignoreExpandedStateChange = new MutableReference<Boolean>(false); final Listener contentTreeListener = new Listener() { @Override public void handle(final org.eclipse.sapphire.Event event) { if (event instanceof MasterDetailsContentOutline.SelectionChangedEvent) { if (ignoreSelectionChange.get() == true) { return; } final MasterDetailsContentOutline.SelectionChangedEvent evt = (MasterDetailsContentOutline.SelectionChangedEvent) event; final List<MasterDetailsContentNode> selection = evt.selection(); final IStructuredSelection sel; if (selection.isEmpty()) { sel = StructuredSelection.EMPTY; } else { sel = new StructuredSelection(selection); } if (!treeViewer.getSelection().equals(sel)) { for (MasterDetailsContentNode node : selection) { treeViewer.reveal(node); } treeViewer.setSelection(sel); } } else if (event instanceof MasterDetailsContentOutline.NodeExpandedStateChangedEvent) { if (ignoreExpandedStateChange.get() == true) { return; } final MasterDetailsContentOutline.NodeExpandedStateChangedEvent evt = (MasterDetailsContentOutline.NodeExpandedStateChangedEvent) event; final MasterDetailsContentNode node = evt.node(); final boolean expandedState = node.isExpanded(); if (treeViewer.getExpandedState(node) != expandedState) { treeViewer.setExpandedState(node, expandedState); } } else if (event instanceof MasterDetailsContentOutline.FilterChangedEvent) { final MasterDetailsContentOutline.FilterChangedEvent evt = (MasterDetailsContentOutline.FilterChangedEvent) event; filteredTree.changeFilterText(evt.filter()); } } }; outline.attach(contentTreeListener); treeViewer.addSelectionChangedListener(new ISelectionChangedListener() { public void selectionChanged(final SelectionChangedEvent event) { ignoreSelectionChange.set(true); try { final IStructuredSelection selection = (IStructuredSelection) event.getSelection(); final List<MasterDetailsContentNode> nodes = new ArrayList<MasterDetailsContentNode>(); for (Iterator<?> itr = selection.iterator(); itr.hasNext();) { nodes.add((MasterDetailsContentNode) itr.next()); } outline.setSelectedNodes(nodes); } finally { ignoreSelectionChange.set(false); } } }); treeViewer.addTreeListener(new ITreeViewerListener() { public void treeExpanded(final TreeExpansionEvent event) { ignoreExpandedStateChange.set(true); try { final MasterDetailsContentNode node = (MasterDetailsContentNode) event.getElement(); node.setExpanded(true); } finally { ignoreExpandedStateChange.set(false); } } public void treeCollapsed(final TreeExpansionEvent event) { ignoreExpandedStateChange.set(true); try { final MasterDetailsContentNode node = (MasterDetailsContentNode) event.getElement(); node.setExpanded(false); } finally { ignoreExpandedStateChange.set(false); } } }); final ContentOutlineActionSupport actionSupport = new ContentOutlineActionSupport(outline, tree); treeViewer.setExpandedElements(outline.getExpandedNodes().toArray()); contentTreeListener .handle(new MasterDetailsContentOutline.SelectionChangedEvent(outline.getSelectedNodes())); filteredTree.changeFilterText(outline.getFilterText()); final ModelElementsTransfer transfer = new ModelElementsTransfer( getModelElement().type().getModelElementClass().getClassLoader()); final Transfer[] transfers = new Transfer[] { transfer }; final DragSource dragSource = new DragSource(tree, DND.DROP_MOVE); dragSource.setTransfer(transfers); final List<Element> dragElements = new ArrayList<Element>(); dragSource.addDragListener(new DragSourceListener() { public void dragStart(final DragSourceEvent event) { final TreeItem[] selection = tree.getSelection(); final String filter = outline().getFilterText(); if ((filter == null || filter.length() == 0) && draggable(selection)) { event.doit = true; for (TreeItem item : selection) { final MasterDetailsContentNode node = (MasterDetailsContentNode) item.getData(); dragElements.add(node.getModelElement()); } } else { event.doit = false; } } protected boolean draggable(final TreeItem[] selection) { if (selection.length > 0) { for (TreeItem item : selection) { final MasterDetailsContentNode node = (MasterDetailsContentNode) item.getData(); if (!draggable(node)) { return false; } } return true; } return false; } protected boolean draggable(final MasterDetailsContentNode node) { final Element element = node.getModelElement(); if (element.parent().definition() instanceof ListProperty && node.controls(element)) { return true; } return false; } public void dragSetData(final DragSourceEvent event) { event.data = dragElements; } public void dragFinished(final DragSourceEvent event) { if (event.detail == DND.DROP_MOVE) { // When drop target is the same editor as drag source, the drop handler takes care of removing // elements from their original location. The following block of code accounts for the case when // dropping into another editor. boolean droppedIntoAnotherEditor = false; for (Element dragElement : dragElements) { if (!dragElement.disposed()) { droppedIntoAnotherEditor = true; break; } } if (droppedIntoAnotherEditor) { final TreeItem[] selection = tree.getSelection(); final List<MasterDetailsContentNode> dragNodes = new ArrayList<MasterDetailsContentNode>(); for (TreeItem item : selection) { dragNodes.add((MasterDetailsContentNode) item.getData()); } final MasterDetailsContentNode parentNode = dragNodes.get(0).getParentNode(); MasterDetailsContentNode selectionPostDelete = findSelectionPostDelete( parentNode.nodes().visible(), dragNodes); if (selectionPostDelete == null) { selectionPostDelete = parentNode; } try { outline.listeners().suspend(MasterDetailsContentOutline.SelectionChangedEvent.class); for (Element dragElement : dragElements) { final ElementList<?> dragElementContainer = (ElementList<?>) dragElement.parent(); dragElementContainer.remove(dragElement); } } catch (Exception e) { // Log this exception unless the cause is EditFailedException. These exception // are the result of the user declining a particular action that is necessary // before the edit can happen (such as making a file writable). final EditFailedException editFailedException = EditFailedException.findAsCause(e); if (editFailedException == null) { SapphireUiFrameworkPlugin.log(e); } } finally { outline.listeners().resume(MasterDetailsContentOutline.SelectionChangedEvent.class); } parentNode.getContentTree().setSelectedNode(selectionPostDelete); } } dragElements.clear(); } }); final DropTarget target = new DropTarget(tree, DND.DROP_MOVE); target.setTransfer(transfers); target.addDropListener(new DropTargetAdapter() { public void dragOver(final DropTargetEvent event) { if (event.item != null) { final TreeItem dragOverItem = (TreeItem) event.item; final MasterDetailsContentNode dragOverNode = (MasterDetailsContentNode) dragOverItem.getData(); final MasterDetailsContentNode parentNode = dragOverNode.getParentNode(); final List<MasterDetailsContentNode> siblingNodes = parentNode.nodes().visible(); final Point pt = dragOverItem.getDisplay().map(null, tree, event.x, event.y); final Rectangle bounds = dragOverItem.getBounds(); MasterDetailsContentNode precedingNode = null; MasterDetailsContentNode trailingNode = null; if (pt.y < bounds.y + bounds.height / 2) { precedingNode = findPrecedingItem(siblingNodes, dragOverNode); trailingNode = dragOverNode; event.feedback = DND.FEEDBACK_INSERT_BEFORE; } else { precedingNode = dragOverNode; trailingNode = findTrailingItem(siblingNodes, dragOverNode); event.feedback = DND.FEEDBACK_INSERT_AFTER; } boolean ok = false; if (precedingNode != null) { final Element precedingElement = precedingNode.getModelElement(); if (precedingElement.parent().definition() instanceof ListProperty && precedingNode.controls(precedingElement)) { ok = true; } } if (!ok && trailingNode != null) { final Element trailingElement = trailingNode.getModelElement(); if (trailingElement.parent().definition() instanceof ListProperty && trailingNode.controls(trailingElement)) { ok = true; } } if (!ok) { event.feedback = DND.FEEDBACK_NONE; } } event.feedback |= DND.FEEDBACK_SCROLL; } @SuppressWarnings("unchecked") public void drop(final DropTargetEvent event) { if (event.data == null || event.item == null) { event.detail = DND.DROP_NONE; return; } // Determine where something was dropped. final List<Element> droppedElements = (List<Element>) event.data; final TreeItem dropTargetItem = (TreeItem) event.item; final MasterDetailsContentNode dropTargetNode = (MasterDetailsContentNode) dropTargetItem.getData(); final MasterDetailsContentNode parentNode = dropTargetNode.getParentNode(); final List<MasterDetailsContentNode> siblingNodes = parentNode.nodes().visible(); final Point pt = tree.getDisplay().map(null, tree, event.x, event.y); final Rectangle bounds = dropTargetItem.getBounds(); MasterDetailsContentNode precedingNode = null; MasterDetailsContentNode trailingNode = null; if (pt.y < bounds.y + bounds.height / 2) { precedingNode = findPrecedingItem(siblingNodes, dropTargetNode); trailingNode = dropTargetNode; } else { precedingNode = dropTargetNode; trailingNode = findTrailingItem(siblingNodes, dropTargetNode); } // Determine whether the drop was valid from model standpoint and figure out // where in the model the dropped elements are to be inserted. ElementList<?> list = null; int position = -1; if (precedingNode != null) { final Element precedingElement = precedingNode.getModelElement(); if (precedingElement.parent().definition() instanceof ListProperty && !precedingElement.parent().definition().isReadOnly() && precedingNode.controls(precedingElement)) { list = (ElementList<?>) precedingElement.parent(); final Set<ElementType> possibleListElementTypes = list.definition() .service(PossibleTypesService.class).types(); for (Element droppedElement : droppedElements) { if (!possibleListElementTypes.contains(droppedElement.type())) { list = null; break; } } if (list != null) { position = list.indexOf(precedingElement) + 1; } } } if (list == null && trailingNode != null) { final Element trailingElement = trailingNode.getModelElement(); if (trailingElement.parent().definition() instanceof ListProperty && !trailingElement.parent().definition().isReadOnly() && trailingNode.controls(trailingElement)) { list = (ElementList<?>) trailingElement.parent(); final Set<ElementType> possibleListElementTypes = list.definition() .service(PossibleTypesService.class).types(); for (Element droppedElement : droppedElements) { if (!possibleListElementTypes.contains(droppedElement.type())) { list = null; break; } } if (list != null) { position = list.indexOf(trailingElement); } } } if (list == null) { for (PropertyDef dropTargetChildProperty : dropTargetNode.getChildNodeFactoryProperties()) { if (dropTargetChildProperty instanceof ListProperty && !dropTargetChildProperty.isReadOnly()) { final ListProperty dropTargetChildListProperty = (ListProperty) dropTargetChildProperty; boolean compatible = true; final Set<ElementType> possibleListElementTypes = dropTargetChildListProperty .service(PossibleTypesService.class).types(); for (Element droppedElement : droppedElements) { if (!possibleListElementTypes.contains(droppedElement.type())) { compatible = false; break; } } if (compatible) { list = dropTargetNode.getLocalModelElement().property(dropTargetChildListProperty); position = list.size(); } } } } if (list == null) { event.detail = DND.DROP_NONE; return; } // Perform the removal and insertion into the new location. try { outline.listeners().suspend(MasterDetailsContentOutline.SelectionChangedEvent.class); for (Element dragElement : dragElements) { final ElementList<?> dragElementContainer = (ElementList<?>) dragElement.parent(); if (dragElementContainer == list && dragElementContainer.indexOf(dragElement) < position) { position--; } dragElementContainer.remove(dragElement); } final List<MasterDetailsContentNode> newSelection = new ArrayList<MasterDetailsContentNode>(); for (Element droppedElement : droppedElements) { final Element insertedElement = list.insert(droppedElement.type(), position); insertedElement.copy(droppedElement); newSelection.add(parentNode.findNode(insertedElement)); position++; } parentNode.getContentTree().setSelectedNodes(newSelection); } catch (Exception e) { // Log this exception unless the cause is EditFailedException. These exception // are the result of the user declining a particular action that is necessary // before the edit can happen (such as making a file writable). final EditFailedException editFailedException = EditFailedException.findAsCause(e); if (editFailedException == null) { SapphireUiFrameworkPlugin.log(e); } event.detail = DND.DROP_NONE; } finally { outline.listeners().resume(MasterDetailsContentOutline.SelectionChangedEvent.class); } } }); tree.addDisposeListener(new DisposeListener() { public void widgetDisposed(final DisposeEvent event) { outline.detach(contentTreeListener); actionSupport.dispose(); } }); return filteredTree; }
From source file:org.eclipse.sapphire.ui.forms.swt.MasterDetailsEditorPage.java
License:Open Source License
private FilteredTree createContentOutline(final Composite parent, final MasterDetailsContentOutline outline, final boolean addBorders) { final int treeStyle = (addBorders ? SWT.BORDER : SWT.NONE) | SWT.MULTI; final ContentOutlineFilteredTree filteredTree = new ContentOutlineFilteredTree(parent, treeStyle, outline); final TreeViewer treeViewer = filteredTree.getViewer(); final Tree tree = treeViewer.getTree(); final ITreeContentProvider contentProvider = new ITreeContentProvider() { private final Listener listener = new Listener() { @Override//from w w w. j av a2 s. co m public void handle(final org.eclipse.sapphire.Event event) { if (event instanceof PartEvent) { final SapphirePart part = ((PartEvent) event).part(); if (part instanceof MasterDetailsContentNodePart) { final MasterDetailsContentNodePart node = (MasterDetailsContentNodePart) part; if (event instanceof PartVisibilityEvent) { final MasterDetailsContentNodePart parent = node.getParentNode(); if (parent == outline.getRoot()) { treeViewer.refresh(); } else { treeViewer.refresh(parent); } } else { if (node.visible()) { if (event instanceof LabelChangedEvent || event instanceof ImageChangedEvent || event instanceof DecorationEvent) { Display.getCurrent().asyncExec(new TreeViewerUpdateJob(treeViewer, node)); } else if (event instanceof NodeListEvent) { treeViewer.refresh(node); } } } } } } }; private void attach(final List<MasterDetailsContentNodePart> nodes) { for (MasterDetailsContentNodePart node : nodes) { node.attach(this.listener); } } private void detach(final List<MasterDetailsContentNodePart> nodes) { for (MasterDetailsContentNodePart node : nodes) { node.detach(this.listener); detach(node.nodes()); } } public Object[] getElements(final Object inputElement) { final MasterDetailsContentNodeList nodes = outline.getRoot().nodes(); attach(nodes); return nodes.visible().toArray(); } public Object[] getChildren(final Object parentElement) { final MasterDetailsContentNodeList nodes = ((MasterDetailsContentNodePart) parentElement).nodes(); attach(nodes); return nodes.visible().toArray(); } public Object getParent(final Object element) { return ((MasterDetailsContentNodePart) element).getParentNode(); } public boolean hasChildren(final Object parentElement) { final MasterDetailsContentNodeList nodes = ((MasterDetailsContentNodePart) parentElement).nodes(); attach(nodes); return !nodes.visible().isEmpty(); } public void inputChanged(final Viewer viewer, final Object oldInput, final Object newInput) { } public void dispose() { detach(outline.getRoot().nodes()); } }; final StyledCellLabelProvider labelProvider = new StyledCellLabelProvider() { private final Map<ImageDescriptor, Image> images = new HashMap<ImageDescriptor, Image>(); private final Map<org.eclipse.sapphire.Color, Color> colors = new HashMap<org.eclipse.sapphire.Color, Color>(); public void update(final ViewerCell cell) { final MasterDetailsContentNodePart node = (MasterDetailsContentNodePart) cell.getElement(); final StyledString styledString = new StyledString(node.getLabel()); for (final TextDecoration decoration : node.decorations()) { String text = decoration.text(); if (text != null) { text = text.trim(); if (text.length() > 0) { final Color color = color(decoration.color()); styledString.append(" " + text, new Styler() { @Override public void applyStyles(final TextStyle style) { style.foreground = color; } }); } } } cell.setText(styledString.toString()); cell.setStyleRanges(styledString.getStyleRanges()); cell.setImage(image(node.getImage())); super.update(cell); } private Color color(final org.eclipse.sapphire.Color c) { Color color = this.colors.get(c); if (color == null) { color = new Color(tree.getDisplay(), c.red(), c.green(), c.blue()); this.colors.put(c, color); } return color; } private Image image(final ImageDescriptor imageDescriptor) { Image image = this.images.get(imageDescriptor); if (image == null) { image = imageDescriptor.createImage(); this.images.put(imageDescriptor, image); } return image; } @Override public void dispose() { for (final Image image : this.images.values()) { image.dispose(); } } }; new SapphireToolTip(tree) { protected Object getToolTipArea(final Event event) { return treeViewer.getCell(new Point(event.x, event.y)); } protected boolean shouldCreateToolTip(Event event) { if (!super.shouldCreateToolTip(event)) { return false; } setShift(new Point(0, 20)); tree.setToolTipText(""); boolean res = false; final MasterDetailsContentNodePart node = getNode(event); if (node != null) { res = !node.validation().ok(); } return res; } private MasterDetailsContentNodePart getNode(final Event event) { final TreeItem item = tree.getItem(new Point(event.x, event.y)); if (item == null) { return null; } else { return (MasterDetailsContentNodePart) item.getData(); } } protected void afterHideToolTip(Event event) { super.afterHideToolTip(event); // Clear the restored value else this could be a source of a leak if (event != null && event.widget != treeViewer.getControl()) { treeViewer.getControl().setFocus(); } } @Override protected void createContent(final Event event, final Composite parent) { final MasterDetailsContentNodePart node = getNode(event); parent.setLayout(glayout(1)); SapphireFormText text = new SapphireFormText(parent, SWT.NO_FOCUS); text.setLayoutData(gdfill()); final org.eclipse.sapphire.modeling.Status validation = node.validation(); final List<org.eclipse.sapphire.modeling.Status> items = gather(validation); final StringBuffer buffer = new StringBuffer(); buffer.append("<form>"); final int count = items.size(); int i = 0; for (org.eclipse.sapphire.modeling.Status item : items) { final String imageKey = (item.severity() == org.eclipse.sapphire.modeling.Status.Severity.ERROR ? "error" : "warning"); buffer.append("<li style=\"image\" value=\"" + imageKey + "\">" + escapeForXml(item.message()) + "</li>"); i++; if (count > 10 && i == 9) { break; } } if (count > 10) { final String msg = problemsOverflowMessage.format(numberToString(count - 9)); final String imageKey = (validation .severity() == org.eclipse.sapphire.modeling.Status.Severity.ERROR ? "error" : "warning"); buffer.append("<br/><li style=\"image\" value=\"" + imageKey + "\">" + msg + "</li>"); } buffer.append("</form>"); text.setText(buffer.toString(), true, false); text.setImage("error", ImageData.readFromClassLoader(SwtResourceCache.class, "Error.png").required()); text.setImage("warning", ImageData.readFromClassLoader(SwtResourceCache.class, "Warning.png").required()); } private String numberToString(final int number) { switch (number) { case 2: return two.text(); case 3: return three.text(); case 4: return four.text(); case 5: return five.text(); case 6: return six.text(); case 7: return seven.text(); case 8: return eight.text(); case 9: return nine.text(); default: return String.valueOf(number); } } private List<org.eclipse.sapphire.modeling.Status> gather( final org.eclipse.sapphire.modeling.Status status) { final List<org.eclipse.sapphire.modeling.Status> items = new ArrayList<org.eclipse.sapphire.modeling.Status>(); gather(status, items); return items; } private void gather(final org.eclipse.sapphire.modeling.Status status, final List<org.eclipse.sapphire.modeling.Status> items) { if (status.children().isEmpty()) { items.add(status); } else { for (org.eclipse.sapphire.modeling.Status child : status.children()) { gather(child, items); } } } }; treeViewer.setContentProvider(contentProvider); treeViewer.setLabelProvider(labelProvider); treeViewer.setInput(new Object()); final MutableReference<Boolean> ignoreSelectionChange = new MutableReference<Boolean>(false); final MutableReference<Boolean> ignoreExpandedStateChange = new MutableReference<Boolean>(false); final Listener contentTreeListener = new Listener() { @Override public void handle(final org.eclipse.sapphire.Event event) { if (event instanceof MasterDetailsContentOutline.SelectionChangedEvent) { if (ignoreSelectionChange.get() == true) { return; } final MasterDetailsContentOutline.SelectionChangedEvent evt = (MasterDetailsContentOutline.SelectionChangedEvent) event; final List<MasterDetailsContentNodePart> selection = evt.selection(); final IStructuredSelection sel; if (selection.isEmpty()) { sel = StructuredSelection.EMPTY; } else { sel = new StructuredSelection(selection); } if (!treeViewer.getSelection().equals(sel)) { for (MasterDetailsContentNodePart node : selection) { treeViewer.reveal(node); } treeViewer.setSelection(sel); } } else if (event instanceof MasterDetailsContentOutline.NodeExpandedStateChangedEvent) { if (ignoreExpandedStateChange.get() == true) { return; } final MasterDetailsContentOutline.NodeExpandedStateChangedEvent evt = (MasterDetailsContentOutline.NodeExpandedStateChangedEvent) event; final MasterDetailsContentNodePart node = evt.node(); final boolean expandedState = node.isExpanded(); if (treeViewer.getExpandedState(node) != expandedState) { treeViewer.setExpandedState(node, expandedState); } } else if (event instanceof MasterDetailsContentOutline.FilterChangedEvent) { final MasterDetailsContentOutline.FilterChangedEvent evt = (MasterDetailsContentOutline.FilterChangedEvent) event; filteredTree.changeFilterText(evt.filter()); } } }; outline.attach(contentTreeListener); treeViewer.addSelectionChangedListener(new ISelectionChangedListener() { public void selectionChanged(final SelectionChangedEvent event) { ignoreSelectionChange.set(true); try { final IStructuredSelection selection = (IStructuredSelection) event.getSelection(); final List<MasterDetailsContentNodePart> nodes = new ArrayList<MasterDetailsContentNodePart>(); for (Iterator<?> itr = selection.iterator(); itr.hasNext();) { nodes.add((MasterDetailsContentNodePart) itr.next()); } outline.setSelectedNodes(nodes); } finally { ignoreSelectionChange.set(false); } } }); treeViewer.addDoubleClickListener(new IDoubleClickListener() { public void doubleClick(DoubleClickEvent event) { IStructuredSelection thisSelection = (IStructuredSelection) event.getSelection(); if (thisSelection.size() == 1) { MasterDetailsContentNodePart selectedNode = (MasterDetailsContentNodePart) thisSelection .getFirstElement(); selectedNode.setExpanded(!selectedNode.isExpanded()); } } }); treeViewer.addTreeListener(new ITreeViewerListener() { public void treeExpanded(final TreeExpansionEvent event) { ignoreExpandedStateChange.set(true); try { final MasterDetailsContentNodePart node = (MasterDetailsContentNodePart) event.getElement(); node.setExpanded(true); } finally { ignoreExpandedStateChange.set(false); } } public void treeCollapsed(final TreeExpansionEvent event) { ignoreExpandedStateChange.set(true); try { final MasterDetailsContentNodePart node = (MasterDetailsContentNodePart) event.getElement(); node.setExpanded(false); } finally { ignoreExpandedStateChange.set(false); } } }); final ContentOutlineActionSupport actionSupport = new ContentOutlineActionSupport(outline, tree); treeViewer.setExpandedElements(outline.getExpandedNodes().toArray()); contentTreeListener .handle(new MasterDetailsContentOutline.SelectionChangedEvent(outline.getSelectedNodes())); filteredTree.changeFilterText(outline.getFilterText()); final ElementsTransfer transfer = new ElementsTransfer( getModelElement().type().getModelElementClass().getClassLoader()); final Transfer[] transfers = new Transfer[] { transfer }; final DragSource dragSource = new DragSource(tree, DND.DROP_COPY | DND.DROP_MOVE); dragSource.setTransfer(transfers); final List<Element> dragElements = new ArrayList<Element>(); dragSource.addDragListener(new DragSourceListener() { public void dragStart(final DragSourceEvent event) { final TreeItem[] selection = tree.getSelection(); final String filter = outline().getFilterText(); if ((filter == null || filter.length() == 0) && draggable(selection)) { event.doit = true; for (TreeItem item : selection) { final MasterDetailsContentNodePart node = (MasterDetailsContentNodePart) item.getData(); dragElements.add(node.getModelElement()); } } else { event.doit = false; } } protected boolean draggable(final TreeItem[] selection) { if (selection.length > 0) { for (TreeItem item : selection) { final MasterDetailsContentNodePart node = (MasterDetailsContentNodePart) item.getData(); if (!draggable(node)) { return false; } } return true; } return false; } protected boolean draggable(final MasterDetailsContentNodePart node) { final Element element = node.getModelElement(); if (element.parent() instanceof ElementList && node.controls(element)) { return true; } return false; } public void dragSetData(final DragSourceEvent event) { event.data = dragElements; } public void dragFinished(final DragSourceEvent event) { if (event.detail == DND.DROP_MOVE) { // When drop target is the same editor as drag source, the drop handler takes care of removing // elements from their original location. The following block of code accounts for the case when // dropping into another editor. boolean droppedIntoAnotherEditor = false; for (Element dragElement : dragElements) { if (!dragElement.disposed()) { droppedIntoAnotherEditor = true; break; } } if (droppedIntoAnotherEditor) { final TreeItem[] selection = tree.getSelection(); final List<MasterDetailsContentNodePart> dragNodes = new ArrayList<MasterDetailsContentNodePart>(); for (TreeItem item : selection) { dragNodes.add((MasterDetailsContentNodePart) item.getData()); } final MasterDetailsContentNodePart parentNode = dragNodes.get(0).getParentNode(); MasterDetailsContentNodePart selectionPostDelete = findSelectionPostDelete( parentNode.nodes().visible(), dragNodes); if (selectionPostDelete == null) { selectionPostDelete = parentNode; } final Disposable suspension = outline.listeners().queue() .suspend(SelectionChangedEventFilter.INSTANCE); try { for (Element dragElement : dragElements) { final ElementList<?> dragElementContainer = (ElementList<?>) dragElement.parent(); dragElementContainer.remove(dragElement); } } catch (Exception e) { // Log this exception unless the cause is EditFailedException. These exception // are the result of the user declining a particular action that is necessary // before the edit can happen (such as making a file writable). final EditFailedException editFailedException = EditFailedException.findAsCause(e); if (editFailedException == null) { Sapphire.service(LoggingService.class).log(e); } } finally { suspension.dispose(); outline.listeners().queue().process(); } parentNode.getContentTree().setSelectedNode(selectionPostDelete); } } dragElements.clear(); } }); final DropTarget target = new DropTarget(tree, DND.DROP_COPY | DND.DROP_MOVE); target.setTransfer(transfers); target.addDropListener(new DropTargetAdapter() { public void dragOver(final DropTargetEvent event) { if (event.item != null) { final TreeItem dragOverItem = (TreeItem) event.item; final MasterDetailsContentNodePart dragOverNode = (MasterDetailsContentNodePart) dragOverItem .getData(); final MasterDetailsContentNodePart parentNode = dragOverNode.getParentNode(); final List<MasterDetailsContentNodePart> siblingNodes = parentNode.nodes().visible(); final Point pt = dragOverItem.getDisplay().map(null, tree, event.x, event.y); final Rectangle bounds = dragOverItem.getBounds(); boolean dragOverNodeAcceptedDrop = false; if (pt.y > bounds.y + bounds.height / 3 && pt.y < bounds.y + bounds.height - bounds.height / 3) { for (final PropertyDef dragOverTargetChildProperty : dragOverNode .getChildNodeFactoryProperties()) { if (dragOverTargetChildProperty instanceof ListProperty && !dragOverTargetChildProperty.isReadOnly()) { dragOverNodeAcceptedDrop = true; event.feedback = DND.FEEDBACK_SELECT; break; } } } if (!dragOverNodeAcceptedDrop) { MasterDetailsContentNodePart precedingNode = null; MasterDetailsContentNodePart trailingNode = null; if (pt.y < bounds.y + bounds.height / 2) { precedingNode = findPrecedingItem(siblingNodes, dragOverNode); trailingNode = dragOverNode; event.feedback = DND.FEEDBACK_INSERT_BEFORE; } else { precedingNode = dragOverNode; trailingNode = findTrailingItem(siblingNodes, dragOverNode); event.feedback = DND.FEEDBACK_INSERT_AFTER; } boolean ok = false; if (precedingNode != null) { final Element precedingElement = precedingNode.getModelElement(); if (precedingElement.parent() instanceof ElementList && precedingNode.controls(precedingElement)) { ok = true; } } if (!ok && trailingNode != null) { final Element trailingElement = trailingNode.getModelElement(); if (trailingElement.parent() instanceof ElementList && trailingNode.controls(trailingElement)) { ok = true; } } if (!ok) { event.feedback = DND.FEEDBACK_NONE; } } } event.feedback |= DND.FEEDBACK_SCROLL; } @SuppressWarnings("unchecked") public void drop(final DropTargetEvent event) { if (event.data == null || event.item == null) { event.detail = DND.DROP_NONE; return; } // Determine where something was dropped. final List<ElementData> droppedElements = (List<ElementData>) event.data; final TreeItem dropTargetItem = (TreeItem) event.item; final MasterDetailsContentNodePart dropTargetNode = (MasterDetailsContentNodePart) dropTargetItem .getData(); final MasterDetailsContentNodePart parentNode = dropTargetNode.getParentNode(); final List<MasterDetailsContentNodePart> siblingNodes = parentNode.nodes().visible(); final Point pt = tree.getDisplay().map(null, tree, event.x, event.y); final Rectangle bounds = dropTargetItem.getBounds(); MasterDetailsContentNodePart precedingNode = null; MasterDetailsContentNodePart trailingNode = null; boolean dropTargetNodeAcceptedDrop = false; if (pt.y > bounds.y + bounds.height / 3 && pt.y < bounds.y + bounds.height - bounds.height / 3) { for (final PropertyDef dropTargetChildProperty : dropTargetNode .getChildNodeFactoryProperties()) { if (dropTargetChildProperty instanceof ListProperty && !dropTargetChildProperty.isReadOnly()) { dropTargetNodeAcceptedDrop = true; break; } } } if (!dropTargetNodeAcceptedDrop) { if (pt.y < bounds.y + bounds.height / 2) { precedingNode = findPrecedingItem(siblingNodes, dropTargetNode); trailingNode = dropTargetNode; } else { precedingNode = dropTargetNode; trailingNode = findTrailingItem(siblingNodes, dropTargetNode); } } // Determine whether the drop was valid from model standpoint and figure out // where in the model the dropped elements are to be inserted. ElementList<?> list = null; int position = -1; if (precedingNode != null) { final Element precedingElement = precedingNode.getModelElement(); if (precedingElement.parent() instanceof ElementList && !precedingElement.parent().definition().isReadOnly() && precedingNode.controls(precedingElement)) { list = (ElementList<?>) precedingElement.parent(); final Set<ElementType> possibleListElementTypes = list.definition() .service(PossibleTypesService.class).types(); for (final ElementData droppedElement : droppedElements) { if (!possibleListElementTypes.contains(droppedElement.type())) { list = null; break; } } if (list != null) { position = list.indexOf(precedingElement) + 1; } } } if (list == null && trailingNode != null) { final Element trailingElement = trailingNode.getModelElement(); if (trailingElement.parent() instanceof ElementList && !trailingElement.parent().definition().isReadOnly() && trailingNode.controls(trailingElement)) { list = (ElementList<?>) trailingElement.parent(); final Set<ElementType> possibleListElementTypes = list.definition() .service(PossibleTypesService.class).types(); for (final ElementData droppedElement : droppedElements) { if (!possibleListElementTypes.contains(droppedElement.type())) { list = null; break; } } if (list != null) { position = list.indexOf(trailingElement); } } } if (list == null) { for (PropertyDef dropTargetChildProperty : dropTargetNode.getChildNodeFactoryProperties()) { if (dropTargetChildProperty instanceof ListProperty && !dropTargetChildProperty.isReadOnly()) { final ListProperty dropTargetChildListProperty = (ListProperty) dropTargetChildProperty; boolean compatible = true; final Set<ElementType> possibleListElementTypes = dropTargetChildListProperty .service(PossibleTypesService.class).types(); for (final ElementData droppedElement : droppedElements) { if (!possibleListElementTypes.contains(droppedElement.type())) { compatible = false; break; } } if (compatible) { list = dropTargetNode.getLocalModelElement().property(dropTargetChildListProperty); position = list.size(); } } } } if (list == null) { event.detail = DND.DROP_NONE; return; } // Prevent a drop within a drag element. for (Property p = list; p != null; p = p.element().parent()) { for (final Element dragElement : dragElements) { if (p.element() == dragElement) { event.detail = DND.DROP_NONE; return; } } } // Perform the removal and insertion into the new location. final Disposable suspension = outline.listeners().queue() .suspend(SelectionChangedEventFilter.INSTANCE); try { if (event.detail == DND.DROP_MOVE) { for (Element dragElement : dragElements) { final ElementList<?> dragElementContainer = (ElementList<?>) dragElement.parent(); if (dragElementContainer == list && dragElementContainer.indexOf(dragElement) < position) { position--; } dragElementContainer.remove(dragElement); } } final List<MasterDetailsContentNodePart> newSelection = new ArrayList<MasterDetailsContentNodePart>(); for (final ElementData droppedElement : droppedElements) { final Element insertedElement = list.insert(droppedElement.type(), position); insertedElement.copy(droppedElement); newSelection.add(parentNode.findNode(insertedElement)); position++; } parentNode.getContentTree().setSelectedNodes(newSelection); } catch (Exception e) { // Log this exception unless the cause is EditFailedException. These exception // are the result of the user declining a particular action that is necessary // before the edit can happen (such as making a file writable). final EditFailedException editFailedException = EditFailedException.findAsCause(e); if (editFailedException == null) { Sapphire.service(LoggingService.class).log(e); } event.detail = DND.DROP_NONE; } finally { suspension.dispose(); outline.listeners().queue().process(); } } }); tree.addDisposeListener(new DisposeListener() { public void widgetDisposed(final DisposeEvent event) { outline.detach(contentTreeListener); actionSupport.dispose(); } }); return filteredTree; }