1 /*******************************************************************************
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2 * Copyright (c) 2007, 2010 Association for Decentralized Information Management
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3 * in Industry THTH ry.
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4 * All rights reserved. This program and the accompanying materials
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5 * are made available under the terms of the Eclipse Public License v1.0
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6 * which accompanies this distribution, and is available at
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7 * http://www.eclipse.org/legal/epl-v10.html
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10 * VTT Technical Research Centre of Finland - initial API and implementation
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11 *******************************************************************************/
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12 package org.simantics.workbench.internal.contributions;
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14 import org.eclipse.jface.resource.JFaceResources;
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15 import org.eclipse.jface.resource.LocalResourceManager;
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16 import org.eclipse.swt.SWT;
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17 import org.eclipse.swt.events.DisposeEvent;
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18 import org.eclipse.swt.events.DisposeListener;
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19 import org.eclipse.swt.events.SelectionAdapter;
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20 import org.eclipse.swt.events.SelectionEvent;
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21 import org.eclipse.swt.layout.FillLayout;
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22 import org.eclipse.swt.widgets.Button;
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23 import org.eclipse.swt.widgets.Composite;
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24 import org.simantics.Simantics;
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25 import org.simantics.db.Session;
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26 import org.simantics.db.management.ISessionContext;
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27 import org.simantics.db.management.ISessionContextChangedListener;
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28 import org.simantics.db.management.ISessionContextProvider;
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29 import org.simantics.db.management.SessionContextChangedEvent;
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30 import org.simantics.ui.jobs.SessionGarbageCollectorJob;
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31 import org.simantics.workbench.internal.Activator;
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34 * @author Tuukka Lehtonen
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36 public class FlushRequestsButtonTrim extends Composite {
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38 LocalResourceManager resourceManager;
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40 class SessionContextListener implements ISessionContextChangedListener {
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42 public void sessionContextChanged(final SessionContextChangedEvent event) {
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45 getDisplay().asyncExec(new Runnable() {
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50 sessionChanged(event.getNewValue());
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56 SessionContextListener listener = new SessionContextListener();
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59 public FlushRequestsButtonTrim(Composite parent) {
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60 super(parent, SWT.NONE);
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62 setLayout(new FillLayout());
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64 b = new Button(this, SWT.PUSH);
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65 this.resourceManager = new LocalResourceManager(JFaceResources.getResources(), b);
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67 final ISessionContextProvider provider = Simantics.getSessionContextProvider();
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68 if (provider != null) {
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69 provider.addContextChangedListener(listener);
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72 b.setToolTipText("Flush database caches");
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73 b.setImage(resourceManager.createImage(Activator.getImageDescriptor("img/paintcan.png")));
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74 b.addSelectionListener(new SelectionAdapter() {
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76 public void widgetSelected(SelectionEvent e) {
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77 Session session = Simantics.peekSession();
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78 if (session != null)
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79 SessionGarbageCollectorJob.getInstance().rescheduleNow();
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82 b.addDisposeListener(new DisposeListener() {
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84 public void widgetDisposed(DisposeEvent e) {
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85 provider.removeContextChangedListener(listener);
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89 sessionChanged(Simantics.getSessionContext());
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92 private void sessionChanged(ISessionContext sessionContext) {
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93 b.setEnabled(sessionContext != null);
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