| /******************************************************************************* |
| * Copyright (c) 2016 Chalmers | University of Gothenburg, rt-labs 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: |
| * Chalmers | University of Gothenburg and rt-labs - initial API and implementation and/or initial documentation |
| *******************************************************************************/ |
| package org.eclipse.capra.ui.plantuml; |
| |
| import org.eclipse.core.commands.AbstractHandler; |
| import org.eclipse.core.commands.Command; |
| import org.eclipse.core.commands.ExecutionEvent; |
| import org.eclipse.core.commands.ExecutionException; |
| import org.eclipse.core.runtime.preferences.InstanceScope; |
| import org.eclipse.ui.handlers.HandlerUtil; |
| import org.osgi.service.prefs.BackingStoreException; |
| import org.osgi.service.prefs.Preferences; |
| |
| /** |
| * Toggles between showing displaying a graph and a matrix if several model |
| * elements are selected. |
| * |
| * @author Jan-Philipp Steghöfer |
| */ |
| public class ToggleDisplayGraphHandler extends AbstractHandler { |
| |
| @Override |
| public Object execute(ExecutionEvent event) throws ExecutionException { |
| Command command = event.getCommand(); |
| boolean oldValue = HandlerUtil.toggleCommandState(command); |
| setDisplayGraph(!oldValue); |
| return null; |
| } |
| |
| /** |
| * Checks whether the trace view is set to show a graph. |
| * |
| * @return {@code true} if the graph view is enabled, {@code false} |
| * otherwise |
| */ |
| public static boolean isDisplayGraph() { |
| Preferences graphDisplay = getPreference(); |
| |
| return graphDisplay.get("option", "matrix").equals("matrix"); |
| } |
| |
| private static Preferences getPreference() { |
| Preferences preferences = InstanceScope.INSTANCE.getNode("org.eclipse.capra.ui.plantuml.displayGraph"); |
| Preferences transitivity = preferences.node("displayGraph"); |
| return transitivity; |
| } |
| |
| /** |
| * Sets whether the trace view is set to show a graph or a matrix. |
| * |
| * @param value |
| * {@code true} if the graph view is enabled, {@code false} |
| * otherwise |
| * |
| */ |
| public static void setDisplayGraph(boolean value) { |
| Preferences transitivity = getPreference(); |
| |
| transitivity.put("option", value ? "graph" : "matrix"); |
| |
| try { |
| // forces the application to save the preferences |
| transitivity.flush(); |
| } catch (BackingStoreException e) { |
| e.printStackTrace(); |
| } |
| } |
| } |