| /******************************************************************************* |
| * Copyright 2005-2007, CHISEL Group, University of Victoria, Victoria, BC, |
| * Canada. 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: The Chisel Group, University of Victoria |
| ******************************************************************************/ |
| package org.eclipse.zest.tests.jface; |
| |
| import org.eclipse.jface.viewers.LabelProvider; |
| import org.eclipse.jface.viewers.Viewer; |
| import org.eclipse.zest.layouts.LayoutStyles; |
| import org.eclipse.zest.layouts.algorithms.SpringLayoutAlgorithm; |
| import org.eclipse.zest.core.viewers.GraphViewer; |
| import org.eclipse.zest.core.viewers.IGraphContentProvider; |
| import org.eclipse.swt.SWT; |
| import org.eclipse.swt.graphics.Image; |
| import org.eclipse.swt.layout.FillLayout; |
| import org.eclipse.swt.widgets.Display; |
| import org.eclipse.swt.widgets.Shell; |
| |
| /** |
| * This snippet shows how to use the IGraphContentProvider to create a graph with Zest. |
| * In this example, getElements returns 3 edges: |
| * * Rock2Paper |
| * * Paper2Scissors |
| * * Scissors2Rock |
| * |
| * And for each of these, the source and destination are returned in getSource and getDestination. |
| * |
| * A label provider is also used to create the text and icons for the graph. |
| * |
| * @author Ian Bull |
| * |
| */ |
| public class GraphJFaceSnippet2 { |
| |
| static class MyContentProvider implements IGraphContentProvider { |
| |
| public Object getDestination(Object rel) { |
| if ("Rock2Paper".equals(rel)) { |
| return "Rock"; |
| } else if ("Paper2Scissors".equals(rel)) { |
| return "Paper"; |
| } else if ("Scissors2Rock".equals(rel)) { |
| return "Scissors"; |
| } |
| return null; |
| } |
| |
| public Object[] getElements(Object input) { |
| return new Object[] { "Rock2Paper", "Paper2Scissors", "Scissors2Rock" }; |
| } |
| |
| public Object getSource(Object rel) { |
| if ("Rock2Paper".equals(rel)) { |
| return "Paper"; |
| } else if ("Paper2Scissors".equals(rel)) { |
| return "Scissors"; |
| } else if ("Scissors2Rock".equals(rel)) { |
| return "Rock"; |
| } |
| return null; |
| } |
| |
| public double getWeight(Object connection) { |
| return 0; |
| } |
| |
| public void dispose() { |
| } |
| |
| public void inputChanged(Viewer viewer, Object oldInput, Object newInput) { |
| } |
| |
| } |
| |
| static class MyLabelProvider extends LabelProvider { |
| final Image image = Display.getDefault().getSystemImage(SWT.ICON_WARNING); |
| |
| public Image getImage(Object element) { |
| if (element.equals("Rock") || element.equals("Paper") || element.equals("Scissors")) { |
| return image; |
| } |
| return null; |
| } |
| |
| public String getText(Object element) { |
| return element.toString(); |
| } |
| |
| } |
| |
| static GraphViewer viewer = null; |
| |
| /** |
| * @param args |
| */ |
| public static void main(String[] args) { |
| Display d = new Display(); |
| Shell shell = new Shell(d); |
| shell.setText("GraphJFaceSnippet2"); |
| shell.setLayout(new FillLayout(SWT.VERTICAL)); |
| shell.setSize(400, 400); |
| viewer = new GraphViewer(shell, SWT.NONE); |
| viewer.setContentProvider(new MyContentProvider()); |
| viewer.setLabelProvider(new MyLabelProvider()); |
| viewer.setLayoutAlgorithm(new SpringLayoutAlgorithm(LayoutStyles.NO_LAYOUT_NODE_RESIZING)); |
| viewer.setInput(new Object()); |
| shell.open(); |
| while (!shell.isDisposed()) { |
| while (!d.readAndDispatch()) { |
| d.sleep(); |
| } |
| } |
| |
| } |
| } |