]> gerrit.simantics Code Review - simantics/platform.git/blob - bundles/org.simantics.simulation.ui/src/org/simantics/simulation/ui/e4/ExperimentListener.java
Prevent undesirable UI code access when workbench is not running
[simantics/platform.git] / bundles / org.simantics.simulation.ui / src / org / simantics / simulation / ui / e4 / ExperimentListener.java
1 /*******************************************************************************
2  * Copyright (c) 2007, 2019 Association for Decentralized Information Management
3  * in Industry THTH ry.
4  * All rights reserved. This program and the accompanying materials
5  * are made available under the terms of the Eclipse Public License v1.0
6  * which accompanies this distribution, and is available at
7  * http://www.eclipse.org/legal/epl-v10.html
8  *
9  * Contributors:
10  *     VTT Technical Research Centre of Finland - initial API and implementation
11  *     Semantum Oy - gitlab #384
12  *******************************************************************************/
13 package org.simantics.simulation.ui.e4;
14
15 import org.eclipse.e4.core.services.events.IEventBroker;
16 import org.eclipse.e4.ui.internal.workbench.E4Workbench;
17 import org.eclipse.ui.PlatformUI;
18 import org.simantics.simulation.SimulationEvents;
19 import org.simantics.simulation.experiment.ExperimentState;
20 import org.simantics.simulation.experiment.IExperimentListener;
21
22 public class ExperimentListener implements IExperimentListener {
23
24     private IEventBroker eventBroker;
25
26     public ExperimentListener() {
27         eventBroker = E4Workbench.getServiceContext().get(IEventBroker.class);
28     }
29
30     @Override
31     public void stateChanged(final ExperimentState state) {
32         if (!PlatformUI.isWorkbenchRunning())
33             return;
34
35         PlatformUI.getWorkbench().getDisplay().asyncExec(() -> {
36             switch (state) {
37                 case RUNNING:
38                     eventBroker.post(SimulationEvents.TOPIC_STATE_RUNNING, true);
39                     break;
40                 case STOPPED:
41                 default:
42                     eventBroker.post(SimulationEvents.TOPIC_STATE_STOPPED, false);
43                     break;
44             }
45         });
46     }
47
48 }