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

   1 /*******************************************************************************\r
   2  * Copyright (c) 2007, 2010 Association for Decentralized Information Management\r
   3  * in Industry THTH ry.\r
   4  * All rights reserved. This program and the accompanying materials\r
   5  * are made available under the terms of the Eclipse Public License v1.0\r
   6  * which accompanies this distribution, and is available at\r
   7  * http://www.eclipse.org/legal/epl-v10.html\r
   8  *\r
   9  * Contributors:\r
  10  *     VTT Technical Research Centre of Finland - initial API and implementation\r
  11  *******************************************************************************/\r
  12 package org.simantics.scenegraph.profile.common;\r
  13 \r
  14 import java.util.Collection;\r
  15 import java.util.HashMap;\r
  16 import java.util.Map;\r
  17 import java.util.concurrent.TimeUnit;\r
  18 \r
  19 import org.simantics.Simantics;\r
  20 import org.simantics.db.AsyncRequestProcessor;\r
  21 import org.simantics.db.Resource;\r
  22 import org.simantics.db.Session;\r
  23 import org.simantics.db.common.session.SessionEventListenerAdapter;\r
  24 import org.simantics.db.common.utils.Logger;\r
  25 import org.simantics.db.procedure.Procedure;\r
  26 import org.simantics.db.service.SessionEventSupport;\r
  27 import org.simantics.scenegraph.INode;\r
  28 import org.simantics.scenegraph.g2d.G2DSceneGraph;\r
  29 import org.simantics.scenegraph.profile.EvaluationContext;\r
  30 import org.simantics.scenegraph.profile.ProfileEntry;\r
  31 import org.simantics.scenegraph.profile.impl.DebugPolicy;\r
  32 import org.simantics.scenegraph.profile.impl.ProfileActivationListener;\r
  33 import org.simantics.scenegraph.profile.request.RuntimeProfileActiveEntries;\r
  34 import org.simantics.utils.datastructures.disposable.IDisposable;\r
  35 import org.simantics.utils.threads.IThreadWorkQueue;\r
  36 import org.simantics.utils.threads.ThreadUtils;\r
  37 \r
  38 public class ProfileObserver implements EvaluationContext {\r
  39 \r
  40     private final Session                     session;\r
  41 \r
  42     /**\r
  43      * Runtime diagram resource.\r
  44      */\r
  45     private final Resource                    resource;\r
  46 \r
  47     private final IDisposable                 canvas;\r
  48     private final IThreadWorkQueue            thread;\r
  49     @SuppressWarnings("unused")\r
  50     private final Object                      diagram;\r
  51     private final Runnable                    notification;\r
  52     private final G2DSceneGraph               sceneGraph;\r
  53 \r
  54     private boolean                           dirty               = true;\r
  55     private boolean                           disposed            = false;\r
  56 \r
  57     private ProfileActivationListener         activationListener;\r
  58 \r
  59     private Map<String, Object>               constants           = new HashMap<String, Object>();\r
  60 \r
  61     private Map<INode, Map<String, Object>>   temporaryProperties = new HashMap<INode, Map<String, Object>>();\r
  62     private Map<INode, Map<String, Object>>   properties          = new HashMap<INode, Map<String, Object>>();\r
  63 \r
  64     private final SessionEventListenerAdapter transactionListener = new SessionEventListenerAdapter() {\r
  65         @Override\r
  66         public void writeTransactionFinished() {\r
  67             if (isDisposed())\r
  68                 dispose();\r
  69             if (dirty)\r
  70                 perform();\r
  71         }\r
  72         @Override\r
  73         public void readTransactionFinished() {\r
  74             if (isDisposed())\r
  75                 dispose();\r
  76             if (dirty)\r
  77                 perform();\r
  78         }\r
  79     };\r
  80 \r
  81     public ProfileObserver(Session session, Resource resource, IThreadWorkQueue thread, IDisposable canvas, G2DSceneGraph sceneGraph, Object diagram, Map<String, Object> constants, Runnable notification) {\r
  82         //System.out.println(this + " NEW PROFILE OBSERVER: ");\r
  83         this.session = session;\r
  84         this.resource = resource;\r
  85         this.thread = thread;\r
  86         this.canvas = canvas;\r
  87         this.diagram = diagram;\r
  88         this.sceneGraph = sceneGraph;\r
  89         this.constants.putAll(constants);\r
  90         this.notification = notification;\r
  91 \r
  92         attachSessionListener();\r
  93 \r
  94         if (DebugPolicy.DEBUG_PROFILE_OBSERVER_PERFORM)\r
  95             System.out.println("ProfileObserver(" + this + ")");\r
  96         \r
  97         // Tell SceneGraph that this observer is not yet done applying its operations\r
  98         if(sceneGraph != null)\r
  99             sceneGraph.setPending(ProfileObserver.this);\r
 100         \r
 101     }\r
 102 \r
 103     private void attachSessionListener() {\r
 104         SessionEventSupport eventSupport = session.getService(SessionEventSupport.class);\r
 105         eventSupport.addListener(transactionListener);\r
 106     }\r
 107 \r
 108     private void detachSessionListener() {\r
 109         SessionEventSupport eventSupport = session.getService(SessionEventSupport.class);\r
 110         eventSupport.removeListener(transactionListener);\r
 111     }\r
 112 \r
 113     public void dispose() {\r
 114         synchronized (this) {\r
 115             if (disposed)\r
 116                 return;\r
 117             disposed = true;\r
 118         }\r
 119 \r
 120         if (DebugPolicy.DEBUG_PROFILE_OBSERVER_PERFORM)\r
 121             System.out.println("ProfileObserver.dispose(" + this + ")");\r
 122 \r
 123         if(activationListener != null) { \r
 124             activationListener.cleanup();\r
 125             activationListener = null;\r
 126         }\r
 127 \r
 128         detachSessionListener();\r
 129     }\r
 130 \r
 131     @Override\r
 132     public void update() {\r
 133         if (DebugPolicy.DEBUG_PROFILE_OBSERVER_UPDATE)\r
 134             System.out.println("Profile observer marked dirty.");\r
 135         dirty = true;\r
 136     }\r
 137 \r
 138     private void perform() {\r
 139         dirty = false;\r
 140         if (DebugPolicy.DEBUG_PROFILE_OBSERVER_UPDATE)\r
 141             System.out.println("Profile observer detected a change.");\r
 142         \r
 143         session.asyncRequest(new RuntimeProfileActiveEntries(resource), new Procedure<Collection<ProfileEntry>>() {\r
 144             @Override\r
 145             public void execute(final Collection<ProfileEntry> entries) {\r
 146 \r
 147                 if (isDisposed())\r
 148                     return;\r
 149 \r
 150                 ThreadUtils.asyncExec(thread, new Runnable() {\r
 151                     \r
 152 //                    private void init(INode node) {\r
 153 //                        //ProfileVariables.init(node, ProfileObserver.this);\r
 154 ////                        NodeUtil.forChildren(node, new NodeProcedure<Object>() {\r
 155 ////                            @Override\r
 156 ////                            public Object execute(INode node, String id) {\r
 157 ////                                init(node);\r
 158 ////                                return null;\r
 159 ////                            }\r
 160 ////                        }, null);\r
 161 //                    }\r
 162 \r
 163                     @Override\r
 164                     public void run() {\r
 165 \r
 166                         if (isDisposed())\r
 167                             return;\r
 168 \r
 169                         temporaryProperties.clear();\r
 170 \r
 171 //                        init(sceneGraph);\r
 172 \r
 173 //                        for(IElement e : diagram.getElements()) {\r
 174 //                            Node node = NodeUtils.\r
 175 //                            Variables.init(e, ProfileObserver.this);\r
 176 //                        }\r
 177 \r
 178                         for(ProfileEntry e : entries) {\r
 179                             if (DebugPolicy.DEBUG_PROFILE_OBSERVER_PERFORM)\r
 180                                 System.out.println("Apply profile entry: " + e);\r
 181                             e.apply(ProfileObserver.this);\r
 182                         }\r
 183 \r
 184                         if(dirty) {\r
 185                                 sceneGraph.setPending(ProfileObserver.this);\r
 186 //                              System.err.println("setPending, dirty=true");\r
 187                         }\r
 188                         else {\r
 189                                 sceneGraph.clearPending(ProfileObserver.this);\r
 190 //                              System.err.println("clearPending, dirty=false");\r
 191                         }\r
 192                         \r
 193                         notification.run();\r
 194 //                        canvas.getContentContext().setDirty();\r
 195                         \r
 196                         // Something is underway, schedule update\r
 197                         if(dirty) {\r
 198                                 Simantics.async(new Runnable() {\r
 199 \r
 200                                                                 @Override\r
 201                                                                 public void run() {\r
 202 \r
 203                                                             if (isDisposed()) return;\r
 204                                                             \r
 205                                                                         if(dirty) perform();\r
 206                                                                         \r
 207                                                                 }\r
 208                                         \r
 209                                 }, 100, TimeUnit.MILLISECONDS);\r
 210                         }\r
 211 \r
 212                     }\r
 213                 });\r
 214             }\r
 215 \r
 216             @Override\r
 217             public void exception(Throwable t) {\r
 218                 Logger.defaultLogError(t);\r
 219             }\r
 220         });\r
 221     }\r
 222 \r
 223     @Override\r
 224     public boolean isDisposed() {\r
 225         return disposed || canvas.isDisposed();\r
 226     }\r
 227 \r
 228     @Override\r
 229     public void exception(Throwable throwable) {\r
 230         Logger.defaultLogError(throwable);\r
 231     }\r
 232 \r
 233     @SuppressWarnings("unchecked")\r
 234     @Override\r
 235     public <T> T getTemporaryProperty(INode element, String key) {\r
 236         Map<String, Object> map = temporaryProperties.get(element);\r
 237         T t = map == null ? null : (T) map.get(key);\r
 238         //System.out.println(this + ".getTemporaryProperty(" + element + ", " + key + "): " + t);\r
 239         return t;\r
 240     }\r
 241 \r
 242     @Override\r
 243     public <T> void setTemporaryProperty(INode element, String key, T value) {\r
 244         //System.out.println(this + ".setTemporaryProperty(" + element + ", " + key + ", " + value + ")");\r
 245         Map<String, Object> map = temporaryProperties.get(element);\r
 246         if (map == null) {\r
 247             if (value == null)\r
 248                 return;\r
 249             map = new HashMap<String, Object>(8);\r
 250             temporaryProperties.put(element, map);\r
 251         }\r
 252         if (value == null) {\r
 253             map.remove(key);\r
 254             if (map.isEmpty())\r
 255                 properties.remove(element);\r
 256         } else\r
 257             map.put(key, value);\r
 258     }\r
 259 \r
 260     @SuppressWarnings("unchecked")\r
 261     @Override\r
 262     public <T> T getProperty(INode element, String key) {\r
 263         Map<String, Object> map = properties.get(element);\r
 264         T t = map == null ? null : (T) map.get(key);\r
 265         //System.out.println(this + ".getProperty(" + element + ", " + key + "): " + t);\r
 266         return t;\r
 267     }\r
 268 \r
 269     @SuppressWarnings("unchecked")\r
 270     @Override\r
 271     public <T> T setProperty(INode element, String key, T value) {\r
 272         T result = null;\r
 273         //System.out.println(this + ".setProperty(" + element + ", " + key + ", " + value + ")");\r
 274         Map<String, Object> map = properties.get(element);\r
 275         if (map == null) {\r
 276             if (value == null)\r
 277                 return null;\r
 278             map = new HashMap<String, Object>(8);\r
 279             properties.put(element, map);\r
 280         }\r
 281         if (value == null) {\r
 282             result = (T) map.remove(key);\r
 283             if (map.isEmpty())\r
 284                 properties.remove(element);\r
 285         } else\r
 286             result = (T) map.put(key, value);\r
 287         return result;\r
 288     }\r
 289 \r
 290     @SuppressWarnings("unchecked")\r
 291     @Override\r
 292     public <T> T getConstant(String key) {\r
 293         return (T) constants.get(key);\r
 294     }\r
 295 \r
 296     @Override\r
 297     public String toString() {\r
 298         return "ProfileObserver[" + resource.getResourceId() + "]";\r
 299     }\r
 300 \r
 301 //    @Override\r
 302 //    public ICanvasContext getContext() {\r
 303 //      return canvas;\r
 304 //    }\r
 305 //    \r
 306 //    @Override\r
 307 //    public IDiagram getDiagram() {\r
 308 //      return diagram;\r
 309 //    }\r
 310 \r
 311     public void listen(AsyncRequestProcessor processor, IDisposable disposable) {\r
 312         activationListener = new ProfileActivationListener(resource, this, disposable);\r
 313         processor.asyncRequest(new RuntimeProfileActiveEntries(resource), activationListener);\r
 314     }\r
 315 \r
 316     @Override\r
 317     public Resource getResource() {\r
 318         return resource;\r
 319     }\r
 320 \r
 321     @Override\r
 322     public G2DSceneGraph getSceneGraph() {\r
 323         return sceneGraph;\r
 324     }\r
 325 \r
 326 }\r