| /******************************************************************************* |
| * Copyright (c) 2000, 2010 IBM Corporation and others. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/epl-v10.html |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.gef.editparts; |
| |
| import org.eclipse.draw2d.ConnectionLayer; |
| import org.eclipse.draw2d.IFigure; |
| import org.eclipse.draw2d.Layer; |
| import org.eclipse.draw2d.LayeredPane; |
| import org.eclipse.draw2d.ScrollPane; |
| import org.eclipse.draw2d.StackLayout; |
| import org.eclipse.draw2d.Viewport; |
| import org.eclipse.draw2d.geometry.Dimension; |
| |
| import org.eclipse.gef.DragTracker; |
| import org.eclipse.gef.EditPart; |
| import org.eclipse.gef.EditPartViewer; |
| import org.eclipse.gef.LayerConstants; |
| import org.eclipse.gef.Request; |
| import org.eclipse.gef.RootEditPart; |
| import org.eclipse.gef.commands.Command; |
| import org.eclipse.gef.commands.UnexecutableCommand; |
| import org.eclipse.gef.tools.MarqueeDragTracker; |
| |
| /** |
| * Provides support for representation of any other graphical EditPart. It |
| * contains Layers which are used to represent specific type of visual |
| * information. The Layers are (1) Primary - Used to hold the main EditPart's |
| * Figures. (2) Connection - Used to hold the connections between EditParts. (3) |
| * Handle - Takes care of holding handles for EditParts. (4) Feedback - Shows |
| * feedback information for the EditParts. |
| * |
| * @deprecated this class will be deleted, use ScrollingGraphicalViewer with |
| * ScalableRootEditPart instead |
| */ |
| public class GraphicalRootEditPart extends AbstractGraphicalEditPart implements |
| RootEditPart, LayerConstants, LayerManager { |
| |
| /** |
| * The contents |
| */ |
| protected EditPart contents; |
| /** |
| * the viewer |
| */ |
| protected EditPartViewer viewer; |
| private LayeredPane innerLayers; |
| private LayeredPane printableLayers; |
| |
| /** |
| * @see org.eclipse.gef.editparts.AbstractEditPart#createEditPolicies() |
| */ |
| protected void createEditPolicies() { |
| } |
| |
| /** |
| * @see org.eclipse.gef.editparts.AbstractGraphicalEditPart#createFigure() |
| */ |
| protected IFigure createFigure() { |
| innerLayers = new LayeredPane(); |
| printableLayers = new LayeredPane(); |
| |
| Layer layer = new Layer(); |
| layer.setLayoutManager(new StackLayout()); |
| printableLayers.add(layer, PRIMARY_LAYER); |
| |
| layer = new ConnectionLayer(); |
| layer.setPreferredSize(new Dimension(5, 5)); |
| printableLayers.add(layer, CONNECTION_LAYER); |
| |
| innerLayers.add(printableLayers, PRINTABLE_LAYERS); |
| |
| layer = new Layer(); |
| layer.setPreferredSize(new Dimension(5, 5)); |
| innerLayers.add(layer, HANDLE_LAYER); |
| |
| layer = new FeedbackLayer(); |
| layer.setPreferredSize(new Dimension(5, 5)); |
| innerLayers.add(layer, FEEDBACK_LAYER); |
| |
| ScrollPane pane = new ScrollPane(); |
| pane.setViewport(new Viewport(true)); |
| pane.setContents(innerLayers); |
| |
| return pane; |
| } |
| |
| /** |
| * Returns the unexecutable command. |
| * |
| * @see org.eclipse.gef.EditPart#getCommand(org.eclipse.gef.Request) |
| */ |
| public Command getCommand(Request req) { |
| return UnexecutableCommand.INSTANCE; |
| } |
| |
| /** |
| * @see org.eclipse.gef.RootEditPart#getContents() |
| */ |
| public EditPart getContents() { |
| return contents; |
| } |
| |
| /** |
| * Should never be called. |
| * |
| * @see org.eclipse.gef.EditPart#getDragTracker(org.eclipse.gef.Request) |
| */ |
| public DragTracker getDragTracker(Request req) { |
| // The drawing cannot be dragged. |
| return new MarqueeDragTracker(); |
| } |
| |
| /** |
| * @see LayerManager#getLayer(java.lang.Object) |
| */ |
| public IFigure getLayer(Object key) { |
| if (innerLayers == null) |
| return null; |
| |
| IFigure layer = printableLayers.getLayer(key); |
| if (layer != null) |
| return layer; |
| return innerLayers.getLayer(key); |
| } |
| |
| /** |
| * Returns the primary layer, which will parent the contents editpart. |
| * |
| * @see org.eclipse.gef.GraphicalEditPart#getContentPane() |
| */ |
| public IFigure getContentPane() { |
| return getLayer(PRIMARY_LAYER); |
| } |
| |
| /** |
| * @see org.eclipse.gef.EditPart#getModel() |
| */ |
| public Object getModel() { |
| return LayerManager.ID; |
| } |
| |
| /** |
| * Returns <code>this</code>. |
| * |
| * @see org.eclipse.gef.EditPart#getRoot() |
| */ |
| public RootEditPart getRoot() { |
| return this; |
| } |
| |
| /** |
| * @see org.eclipse.gef.EditPart#getViewer() |
| */ |
| public EditPartViewer getViewer() { |
| return viewer; |
| } |
| |
| /** |
| * Overridden to do nothing since the child is explicitly set. |
| * |
| * @see AbstractEditPart#refreshChildren() |
| */ |
| protected void refreshChildren() { |
| } |
| |
| /** |
| * @see org.eclipse.gef.RootEditPart#setContents(org.eclipse.gef.EditPart) |
| */ |
| public void setContents(EditPart editpart) { |
| if (contents != null) |
| removeChild(contents); |
| contents = editpart; |
| if (contents != null) |
| addChild(contents, 0); |
| } |
| |
| /** |
| * @see org.eclipse.gef.RootEditPart#setViewer(org.eclipse.gef.EditPartViewer) |
| */ |
| public void setViewer(EditPartViewer newViewer) { |
| if (viewer == newViewer) |
| return; |
| if (viewer != null) |
| unregister(); |
| viewer = newViewer; |
| if (viewer != null) |
| register(); |
| } |
| |
| class FeedbackLayer extends Layer { |
| FeedbackLayer() { |
| setEnabled(false); |
| } |
| } |
| |
| } |