bundles/org.simantics.scenegraph.profile/src/org/simantics/scenegraph/profile/common/ProfileObserver.java

   1 /*******************************************************************************
   2  * Copyright (c) 2007, 2010 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  *******************************************************************************/
  12 package org.simantics.scenegraph.profile.common;
  13
  14 import java.util.ArrayList;
  15 import java.util.Collection;
  16 import java.util.HashMap;
  17 import java.util.List;
  18 import java.util.Map;
  19 import java.util.concurrent.TimeUnit;
  20
  21 import org.simantics.Simantics;
  22 import org.simantics.db.AsyncRequestProcessor;
  23 import org.simantics.db.Resource;
  24 import org.simantics.db.Session;
  25 import org.simantics.db.common.session.SessionEventListenerAdapter;
  26 import org.simantics.db.common.utils.Logger;
  27 import org.simantics.db.procedure.Procedure;
  28 import org.simantics.db.service.SessionEventSupport;
  29 import org.simantics.scenegraph.INode;
  30 import org.simantics.scenegraph.g2d.G2DSceneGraph;
  31 import org.simantics.scenegraph.profile.EvaluationContext;
  32 import org.simantics.scenegraph.profile.ProfileEntry;
  33 import org.simantics.scenegraph.profile.Style;
  34 import org.simantics.scenegraph.profile.impl.DebugPolicy;
  35 import org.simantics.scenegraph.profile.impl.ProfileActivationListener;
  36 import org.simantics.scenegraph.profile.request.RuntimeProfileActiveEntries;
  37 import org.simantics.utils.datastructures.Pair;
  38 import org.simantics.utils.datastructures.disposable.IDisposable;
  39 import org.simantics.utils.threads.IThreadWorkQueue;
  40 import org.simantics.utils.threads.ThreadUtils;
  41
  42 public class ProfileObserver implements EvaluationContext {
  43
  44     private final Session                     session;
  45
  46     /**
  47      * Runtime diagram resource.
  48      */
  49     private final Resource                    resource;
  50
  51     private final IDisposable                 canvas;
  52     private final IThreadWorkQueue            thread;
  53     @SuppressWarnings("unused")
  54     private final Object                      diagram;
  55     private final Runnable                    notification;
  56     private final G2DSceneGraph               sceneGraph;
  57
  58     private volatile boolean                  dirty               = true;
  59     private volatile boolean                  disposed            = false;
  60
  61     private List<Pair<Style, Object>>         updates             = new ArrayList<>();
  62     private boolean                           updateAll;
  63
  64     private ProfileActivationListener         activationListener;
  65
  66     private Map<String, Object>               constants           = new HashMap<String, Object>();
  67
  68     private Map<INode, Map<String, Object>>   temporaryProperties = new HashMap<INode, Map<String, Object>>();
  69     private Map<INode, Map<String, Object>>   properties          = new HashMap<INode, Map<String, Object>>();
  70
  71     private final SessionEventListenerAdapter transactionListener = new SessionEventListenerAdapter() {
  72         @Override
  73         public void writeTransactionFinished() {
  74             if (isDisposed())
  75                 dispose();
  76             if (dirty)
  77                 perform();
  78         }
  79         @Override
  80         public void readTransactionFinished() {
  81             if (isDisposed())
  82                 dispose();
  83             if (dirty)
  84                 perform();
  85         }
  86     };
  87
  88     public ProfileObserver(Session session, Resource resource, IThreadWorkQueue thread, IDisposable canvas, G2DSceneGraph sceneGraph, Object diagram, Map<String, Object> constants, Runnable notification) {
  89         //System.out.println(this + " NEW PROFILE OBSERVER: ");
  90         this.session = session;
  91         this.resource = resource;
  92         this.thread = thread;
  93         this.canvas = canvas;
  94         this.diagram = diagram;
  95         this.sceneGraph = sceneGraph;
  96         this.constants.putAll(constants);
  97         this.notification = notification;
  98
  99         attachSessionListener();
 100
 101         if (DebugPolicy.DEBUG_PROFILE_OBSERVER_PERFORM)
 102             System.out.println("ProfileObserver(" + this + ")");
 103
 104         // Tell SceneGraph that this observer is not yet done applying its operations
 105         if(sceneGraph != null)
 106             sceneGraph.setPending(ProfileObserver.this);
 107
 108     }
 109
 110     private void attachSessionListener() {
 111         SessionEventSupport eventSupport = session.getService(SessionEventSupport.class);
 112         eventSupport.addListener(transactionListener);
 113     }
 114
 115     private void detachSessionListener() {
 116         SessionEventSupport eventSupport = session.getService(SessionEventSupport.class);
 117         eventSupport.removeListener(transactionListener);
 118     }
 119
 120     public void dispose() {
 121         synchronized (this) {
 122             if (disposed)
 123                 return;
 124             disposed = true;
 125         }
 126
 127         if (DebugPolicy.DEBUG_PROFILE_OBSERVER_PERFORM)
 128             System.out.println("ProfileObserver.dispose(" + this + ")");
 129
 130         if(activationListener != null) {
 131             activationListener.cleanup();
 132             activationListener = null;
 133         }
 134
 135         detachSessionListener();
 136     }
 137
 138     @Override
 139     public void update(Style style, Object item) {
 140         if (DebugPolicy.DEBUG_PROFILE_OBSERVER_UPDATE)
 141             System.out.println("Profile observer marked dirty.");
 142
 143         updates.add(Pair.make(style, item));
 144         //updateAll = true;
 145         dirty = true;
 146     }
 147
 148     public void update() {
 149         updateAll = true;
 150         dirty = true;
 151     }
 152
 153     private void perform() {
 154         dirty = false;
 155         if (DebugPolicy.DEBUG_PROFILE_OBSERVER_UPDATE)
 156             System.out.println("Profile observer detected a change.");
 157
 158         session.asyncRequest(new RuntimeProfileActiveEntries(resource), new Procedure<Collection<ProfileEntry>>() {
 159             @Override
 160             public void execute(final Collection<ProfileEntry> entries) {
 161
 162                 if (isDisposed())
 163                     return;
 164
 165                 ThreadUtils.asyncExec(thread, new Runnable() {
 166                     @Override
 167                     public void run() {
 168                         if (isDisposed())
 169                             return;
 170
 171                         temporaryProperties.clear();
 172
 173                         long t0 = DebugPolicy.DEBUG_PROFILE_OBSERVER_PERFORM ? System.nanoTime() : 0L;
 174
 175                         if (updateAll) {
 176                             for(ProfileEntry e : entries) {
 177                                 if (DebugPolicy.DEBUG_PROFILE_OBSERVER_PERFORM)
 178                                     System.out.println("Apply profile entry: " + e);
 179                                 e.apply(ProfileObserver.this);
 180                             }
 181                             updateAll = false;
 182                             // FIXME: Updates which were applied should be cleared to prevent double update.
 183                             // We can't, however, clear all updates since some nodes might still be missing.
 184                             //updates.clear();
 185                         } else {
 186                             List<Pair<Style, Object>> updatesCopy = new ArrayList<>(updates);
 187                             updates.clear();
 188                             for (Pair<Style, Object> update : updatesCopy) {
 189                                 Style style = update.first;
 190                                 Object item = update.second;
 191
 192                                 style.apply2(item, ProfileObserver.this);
 193                             }
 194                         }
 195
 196                         if (DebugPolicy.DEBUG_PROFILE_OBSERVER_PERFORM) {
 197                             long t1 = System.nanoTime();
 198                             System.out.println((t1-t0) / 1e6);
 199                         }
 200
 201                         if(dirty) {
 202                                 sceneGraph.setPending(ProfileObserver.this);
 203 //                              System.err.println("setPending, dirty=true");
 204                         }
 205                         else {
 206                                 sceneGraph.clearPending(ProfileObserver.this);
 207 //                              System.err.println("clearPending, dirty=false");
 208                         }
 209
 210                         notification.run();
 211 //                        canvas.getContentContext().setDirty();
 212
 213                         // Something is underway, schedule update
 214                         if (dirty) {
 215                             Simantics.async(() -> {
 216                                 if (isDisposed()) return;
 217                                 if (dirty) perform();
 218                             }, 100, TimeUnit.MILLISECONDS);
 219                         }
 220                     }
 221                 });
 222             }
 223
 224             @Override
 225             public void exception(Throwable t) {
 226                 Logger.defaultLogError(t);
 227             }
 228         });
 229     }
 230
 231     @Override
 232     public boolean isDisposed() {
 233         return disposed || canvas.isDisposed();
 234     }
 235
 236     @Override
 237     public void exception(Throwable throwable) {
 238         Logger.defaultLogError(throwable);
 239     }
 240
 241     @SuppressWarnings("unchecked")
 242     @Override
 243     public <T> T getTemporaryProperty(INode element, String key) {
 244         Map<String, Object> map = temporaryProperties.get(element);
 245         T t = map == null ? null : (T) map.get(key);
 246         //System.out.println(this + ".getTemporaryProperty(" + element + ", " + key + "): " + t);
 247         return t;
 248     }
 249
 250     @Override
 251     public <T> void setTemporaryProperty(INode element, String key, T value) {
 252         //System.out.println(this + ".setTemporaryProperty(" + element + ", " + key + ", " + value + ")");
 253         Map<String, Object> map = temporaryProperties.get(element);
 254         if (map == null) {
 255             if (value == null)
 256                 return;
 257             map = new HashMap<String, Object>(8);
 258             temporaryProperties.put(element, map);
 259         }
 260         if (value == null) {
 261             map.remove(key);
 262             if (map.isEmpty())
 263                 temporaryProperties.remove(element);
 264         } else
 265             map.put(key, value);
 266     }
 267
 268     @SuppressWarnings("unchecked")
 269     @Override
 270     public <T> T getProperty(INode element, String key) {
 271         Map<String, Object> map = properties.get(element);
 272         T t = map == null ? null : (T) map.get(key);
 273         //System.out.println(this + ".getProperty(" + element + ", " + key + "): " + t);
 274         return t;
 275     }
 276
 277     @SuppressWarnings("unchecked")
 278     @Override
 279     public <T> T setProperty(INode element, String key, T value) {
 280         T result = null;
 281         //System.out.println(this + ".setProperty(" + element + ", " + key + ", " + value + ")");
 282         Map<String, Object> map = properties.get(element);
 283         if (map == null) {
 284             if (value == null)
 285                 return null;
 286             map = new HashMap<String, Object>(8);
 287             properties.put(element, map);
 288         }
 289         if (value == null) {
 290             result = (T) map.remove(key);
 291             if (map.isEmpty())
 292                 properties.remove(element);
 293         } else
 294             result = (T) map.put(key, value);
 295         return result;
 296     }
 297
 298     @SuppressWarnings("unchecked")
 299     @Override
 300     public <T> T getConstant(String key) {
 301         return (T) constants.get(key);
 302     }
 303
 304     @Override
 305     public String toString() {
 306         return "ProfileObserver[" + resource.getResourceId() + "]";
 307     }
 308
 309 //    @Override
 310 //    public ICanvasContext getContext() {
 311 //      return canvas;
 312 //    }
 313 //
 314 //    @Override
 315 //    public IDiagram getDiagram() {
 316 //      return diagram;
 317 //    }
 318
 319     public void listen(AsyncRequestProcessor processor, IDisposable disposable) {
 320         activationListener = new ProfileActivationListener(resource, this, disposable);
 321         processor.asyncRequest(new RuntimeProfileActiveEntries(resource), activationListener);
 322     }
 323
 324     @Override
 325     public Resource getResource() {
 326         return resource;
 327     }
 328
 329     @Override
 330     public G2DSceneGraph getSceneGraph() {
 331         return sceneGraph;
 332     }
 333
 334 }