Examples with Overlays org.osate.ge.gef.ui.editor.overlays.Overlays used on opensource projects

Example 1 with Overlays

use of org.osate.ge.gef.ui.editor.overlays.Overlays in project osate2 by osate.

the class AgeEditor method createPartControl.

@Override
public void createPartControl(final Composite parent) {
    // 
    // Create the FX canvas which is an SWT widget for embedding JavaFX content.
    // 
    fxCanvas = new FXCanvas(parent, SWT.NONE);
    fxCanvas.addDisposeListener(e -> {
        fxCanvas.getScene().setRoot(new Group());
        fxCanvas.setScene(null);
    });
    fxCanvas.addPaintListener(paintListener);
    // Suppress SWT key press handling when interaction is active
    fxCanvas.addKeyListener(new KeyAdapter() {

        @Override
        public void keyPressed(final org.eclipse.swt.events.KeyEvent e) {
            if (activeInteraction != null) {
                e.doit = false;
            }
        }
    });
    fxCanvas.addFocusListener(new FocusAdapter() {

        @Override
        public void focusLost(FocusEvent e) {
            deactivateInteraction();
        }
    });
    // Create the context menu
    contextMenuManager = new MenuManager(MENU_ID, MENU_ID);
    contextMenuManager.setRemoveAllWhenShown(true);
    final Menu contextMenu = contextMenuManager.createContextMenu(fxCanvas);
    fxCanvas.setMenu(contextMenu);
    getEditorSite().registerContextMenu(MENU_ID, contextMenuManager, selectionProvider, true);
    // Create the action executor. It will append an action to activate the editor when undoing and redoing actions.
    actionExecutor = (label, mode, action) -> {
        final boolean reverseActionWasSpecified = actionService.execute(label, mode, action);
        // This will ensure that when the action is undone, the editor will be switched to the one in which the action was performed.
        if (isEditorActive() && reverseActionWasSpecified && !actionService.isActionExecuting() && mode == ExecutionMode.NORMAL) {
            actionService.execute("Activate Editor", ExecutionMode.APPEND_ELSE_HIDE, new ActivateAgeEditorAction(AgeEditor.this));
        }
        fireDirtyPropertyChangeEvent();
        return reverseActionWasSpecified;
    };
    // Initialize the palette model
    final AgeEditorPaletteModel.ImageProvider imageProvider = id -> {
        final RegisteredImage img = extRegistry.getImageMap().get(id);
        if (img == null) {
            return Optional.empty();
        }
        final URI imageUri = URI.createPlatformPluginURI("/" + img.plugin + "/" + img.path, true);
        if (CommonPlugin.asLocalURI(imageUri).isFile()) {
            return Optional.of(new Image(imageUri.toString()));
        } else {
            return Optional.empty();
        }
    };
    Object diagramBo = AgeDiagramUtil.getConfigurationContextBusinessObject(diagram, projectReferenceService);
    if (diagramBo == null) {
        diagramBo = project;
    }
    this.paletteModel = new AgeEditorPaletteModel(extRegistry.getPaletteContributors(), diagramBo, imageProvider);
    // If the palette item changes while an interaction is active, deactivate the interaction.
    this.paletteModel.activeItemProperty().addListener((javafx.beans.value.ChangeListener<SimplePaletteItem>) (observable, oldValue, newValue) -> deactivateInteraction());
    // Initialize the JavaFX nodes based on the diagram
    canvas = new InfiniteCanvas();
    // Set show grid based on preferences
    canvas.setShowGrid(preferenceStore.getBoolean(Preferences.SHOW_GRID));
    final Scene scene = new Scene(new DiagramEditorNode(paletteModel, canvas));
    fxCanvas.setScene(scene);
    gefDiagram = new GefAgeDiagram(diagram, coloringService);
    // Create a wrapper around the diagram's scene node.
    final Group wrapper = new DiagramNodeWrapper(gefDiagram.getSceneNode());
    // Add the wrapper to the canvas
    canvas.getContentGroup().getChildren().add(wrapper);
    gefDiagram.updateDiagramFromSceneGraph(false);
    // Treat the current state of the diagram as clean.
    cleanDiagramChangeNumber = diagram.getCurrentChangeNumber();
    adapterMap.put(LayoutInfoProvider.class, gefDiagram);
    // Create overlays
    overlays = new Overlays(gefDiagram);
    selectionProvider.addSelectionChangedListener(overlays);
    canvas.getScrolledOverlayGroup().getChildren().add(overlays);
    // Perform the initial incremental layout
    diagram.modify("Incremental Layout", m -> DiagramElementLayoutUtil.layoutIncrementally(diagram, m, gefDiagram));
    // Set action executor after initial load. This occurs after the incremental layout to prevent the loading and initial layout from being undoable
    diagram.setActionExecutor(actionExecutor);
    // Refresh the dirty state whenever an operation occurs
    final IOperationHistory history = PlatformUI.getWorkbench().getOperationSupport().getOperationHistory();
    history.addOperationHistoryListener(operationHistoryListener);
    canvas.setOnScroll(e -> {
        if (e.isControlDown()) {
            // Adjust zoom
            if (e.getDeltaY() < 0.0) {
                zoomOut();
            } else {
                zoomIn();
            }
        } else {
            if (e.isShiftDown()) {
                // Scroll in X direction
                canvas.setHorizontalScrollOffset(canvas.getHorizontalScrollOffset() - e.getDeltaY());
            } else {
                // Scroll
                canvas.setHorizontalScrollOffset(canvas.getHorizontalScrollOffset() - e.getDeltaX());
                canvas.setVerticalScrollOffset(canvas.getVerticalScrollOffset() + e.getDeltaY());
            }
        }
    });
    // 
    // Listeners to handle tooltips
    // 
    canvas.addEventHandler(MouseEvent.MOUSE_ENTERED_TARGET, e -> {
        if (e.getTarget() instanceof Node && activeInteraction == null && tooltipManager != null && gefDiagram != null) {
            final DiagramElement de = gefDiagram.getDiagramElement((Node) e.getTarget());
            if (de != null) {
                tooltipManager.mouseEnter(de);
            }
        }
    });
    canvas.addEventHandler(MouseEvent.MOUSE_EXITED_TARGET, e -> {
        if (e.getTarget() instanceof Node && activeInteraction == null && tooltipManager != null && gefDiagram != null) {
            final DiagramElement de = gefDiagram.getDiagramElement((Node) e.getTarget());
            if (de != null) {
                tooltipManager.mouseExit(de);
            }
        }
    });
    // 
    // General input handlers
    // 
    // Event handler. Delegates to input event handlers or the active interaction as appropriate
    final EventHandler<? super InputEvent> handleInput = e -> {
        if (activeInteraction == null) {
            // Delegate processing of the event to the input event handlers
            for (final InputEventHandler inputEventHandler : inputEventHandlers) {
                final InputEventHandler.HandledEvent r = inputEventHandler.handleEvent(e);
                if (r != null) {
                    activeInteraction = r.newInteraction;
                    if (activeInteraction != null) {
                        canvas.setCursor(activeInteraction.getCursor());
                        if (tooltipManager != null) {
                            tooltipManager.hideTooltip();
                        }
                    }
                    break;
                }
            }
        } else {
            if (activeInteraction.handleEvent(e) == InteractionState.COMPLETE) {
                deactivateInteraction();
            }
            canvas.setCursor(activeInteraction == null ? null : activeInteraction.getCursor());
        }
    };
    // Handle mouse button presses
    canvas.addEventFilter(MouseEvent.MOUSE_PRESSED, handleInput);
    canvas.addEventFilter(MouseEvent.MOUSE_DRAGGED, handleInput);
    canvas.addEventFilter(MouseEvent.MOUSE_RELEASED, handleInput);
    scene.addEventFilter(KeyEvent.KEY_PRESSED, handleInput);
    canvas.addEventFilter(MouseEvent.MOUSE_MOVED, e -> {
        if (activeInteraction == null) {
            Cursor cursor = Cursor.DEFAULT;
            for (final InputEventHandler inputEventHandler : inputEventHandlers) {
                final Cursor overrideCursor = inputEventHandler.getCursor(e);
                if (overrideCursor != null) {
                    cursor = overrideCursor;
                    break;
                }
            }
            canvas.setCursor(cursor);
        }
        handleInput.handle(e);
    });
    // Create input event handlers
    inputEventHandlers.add(new OpenPropertiesViewInputEventHandler(this));
    inputEventHandlers.add(new ResizeInputEventHandler(this));
    inputEventHandlers.add(new MarqueeSelectInputEventHandler(this));
    inputEventHandlers.add(new MoveConnectionPointTool(this));
    inputEventHandlers.add(new RenameInputEventHandler(this));
    inputEventHandlers.add(new SelectInputEventHandler(this));
    inputEventHandlers.add(new MoveInputEventHandler(this));
    inputEventHandlers.add(new PaletteCommandInputEventHandler(this));
}