swt/org.argeo.app.swt/src/org/argeo/app/swt/ux/SwtArgeoApp.java

   1 package org.argeo.app.swt.ux;
   2
   3 import static org.argeo.api.cms.ux.CmsView.CMS_VIEW_UID_PROPERTY;
   4
   5 import java.lang.ref.WeakReference;
   6 import java.util.Collections;
   7 import java.util.HashMap;
   8 import java.util.HashSet;
   9 import java.util.Iterator;
  10 import java.util.List;
  11 import java.util.Locale;
  12 import java.util.Map;
  13 import java.util.Objects;
  14 import java.util.Set;
  15 import java.util.Timer;
  16 import java.util.TimerTask;
  17 import java.util.TreeMap;
  18 import java.util.TreeSet;
  19
  20 import javax.xml.namespace.QName;
  21
  22 import org.argeo.api.acr.Content;
  23 import org.argeo.api.acr.ContentRepository;
  24 import org.argeo.api.acr.spi.ProvidedSession;
  25 import org.argeo.api.cms.CmsConstants;
  26 import org.argeo.api.cms.CmsEvent;
  27 import org.argeo.api.cms.CmsEventSubscriber;
  28 import org.argeo.api.cms.CmsLog;
  29 import org.argeo.api.cms.CmsSession;
  30 import org.argeo.api.cms.ux.CmsTheme;
  31 import org.argeo.api.cms.ux.CmsUi;
  32 import org.argeo.api.cms.ux.CmsView;
  33 import org.argeo.app.api.AppUserState;
  34 import org.argeo.app.api.EntityConstants;
  35 import org.argeo.app.api.EntityName;
  36 import org.argeo.app.api.EntityType;
  37 import org.argeo.app.api.RankedObject;
  38 import org.argeo.app.ux.AbstractArgeoApp;
  39 import org.argeo.app.ux.AppUi;
  40 import org.argeo.app.ux.SuiteUxEvent;
  41 import org.argeo.cms.LocaleUtils;
  42 import org.argeo.cms.Localized;
  43 import org.argeo.cms.swt.CmsSwtUtils;
  44 import org.argeo.cms.swt.acr.SwtUiProvider;
  45 import org.argeo.cms.swt.dialogs.CmsFeedback;
  46 import org.argeo.cms.util.LangUtils;
  47 import org.argeo.cms.ux.CmsUxUtils;
  48 import org.argeo.eclipse.ui.specific.UiContext;
  49 import org.eclipse.swt.SWT;
  50 import org.eclipse.swt.events.DisposeEvent;
  51 import org.eclipse.swt.events.DisposeListener;
  52 import org.eclipse.swt.widgets.Composite;
  53 import org.osgi.framework.Constants;
  54
  55 /** The Argeo Suite App. */
  56 public class SwtArgeoApp extends AbstractArgeoApp implements CmsEventSubscriber {
  57         private final static CmsLog log = CmsLog.getLog(SwtArgeoApp.class);
  58
  59         public final static String PUBLIC_BASE_PATH_PROPERTY = "publicBasePath";
  60         public final static String DEFAULT_UI_NAME_PROPERTY = "defaultUiName";
  61         public final static String DEFAULT_THEME_ID_PROPERTY = "defaultThemeId";
  62         public final static String DEFAULT_LAYER_PROPERTY = "defaultLayer";
  63         public final static String SHARED_PID_PREFIX_PROPERTY = "sharedPidPrefix";
  64
  65         private final static String LOGIN = "login";
  66         private final static String HOME_STATE = "~";
  67
  68         private String publicBasePath = null;
  69
  70         private String appPid;
  71         private String pidPrefix;
  72         private String sharedPidPrefix;
  73
  74 //      private String headerPid;
  75 //      private String footerPid;
  76 //      private String leadPanePid;
  77 //      private String adminLeadPanePid;
  78 //      private String loginScreenPid;
  79
  80         private String defaultUiName = "app";
  81         private String adminUiName = "admin";
  82
  83         // FIXME such default names make refactoring more dangerous
  84         @Deprecated
  85         private String defaultLayerPid = "argeo.suite.ui.dashboardLayer";
  86         @Deprecated
  87         private String defaultThemeId = "org.argeo.app.theme.default";
  88
  89         // TODO use QName as key for byType
  90         private Map<String, RankedObject<SwtUiProvider>> uiProvidersByPid = Collections.synchronizedMap(new HashMap<>());
  91         private Map<String, RankedObject<SwtUiProvider>> uiProvidersByType = Collections.synchronizedMap(new HashMap<>());
  92         private Map<String, RankedObject<SwtAppLayer>> layersByPid = Collections.synchronizedSortedMap(new TreeMap<>());
  93         private Map<String, RankedObject<SwtAppLayer>> layersByType = Collections.synchronizedSortedMap(new TreeMap<>());
  94
  95 //      private CmsUserManager cmsUserManager;
  96
  97         // TODO make more optimal or via CmsSession/CmsView
  98         private static Timer janitorTimer = new Timer(true);
  99         private Map<String, WeakReference<SwtAppUi>> managedUis = new HashMap<>();
 100
 101         // ACR
 102         private ContentRepository contentRepository;
 103         private AppUserState appUserState;
 104         // JCR
 105 //      private Repository repository;
 106
 107         public void start(Map<String, Object> properties) {
 108                 for (SuiteUxEvent event : SuiteUxEvent.values()) {
 109                         getCmsContext().getCmsEventBus().addEventSubscriber(event.topic(), this);
 110                 }
 111
 112                 if (properties.containsKey(DEFAULT_UI_NAME_PROPERTY))
 113                         defaultUiName = LangUtils.get(properties, DEFAULT_UI_NAME_PROPERTY);
 114                 if (properties.containsKey(DEFAULT_THEME_ID_PROPERTY))
 115                         defaultThemeId = LangUtils.get(properties, DEFAULT_THEME_ID_PROPERTY);
 116                 if (properties.containsKey(DEFAULT_LAYER_PROPERTY))
 117                         defaultLayerPid = LangUtils.get(properties, DEFAULT_LAYER_PROPERTY);
 118                 sharedPidPrefix = LangUtils.get(properties, SHARED_PID_PREFIX_PROPERTY);
 119                 publicBasePath = LangUtils.get(properties, PUBLIC_BASE_PATH_PROPERTY);
 120
 121                 if (properties.containsKey(Constants.SERVICE_PID)) {
 122                         appPid = properties.get(Constants.SERVICE_PID).toString();
 123                         int lastDotIndex = appPid.lastIndexOf('.');
 124                         if (lastDotIndex >= 0) {
 125                                 pidPrefix = appPid.substring(0, lastDotIndex);
 126                         }
 127                 } else {
 128                         // TODO does it make sense to accept that?
 129                         appPid = "<unknown>";
 130                 }
 131                 Objects.requireNonNull(contentRepository, "Content repository must be provided");
 132                 Objects.requireNonNull(appUserState, "App user state must be provided");
 133
 134                 long janitorPeriod = 60 * 60 * 1000;// 1h
 135                 janitorTimer.schedule(new TimerTask() {
 136
 137                         @Override
 138                         public void run() {
 139                                 try {
 140                                         Iterator<Map.Entry<String, WeakReference<SwtAppUi>>> uiRefs = managedUis.entrySet().iterator();
 141                                         refs: while (uiRefs.hasNext()) {
 142                                                 Map.Entry<String, WeakReference<SwtAppUi>> entry = uiRefs.next();
 143                                                 String uiUuid = entry.getKey();
 144                                                 WeakReference<SwtAppUi> uiRef = entry.getValue();
 145                                                 SwtAppUi ui = uiRef.get();
 146                                                 if (ui == null) {
 147                                                         if (log.isTraceEnabled())
 148                                                                 log.warn("Unreferenced UI " + uiUuid + " in " + appPid + ", removing it");
 149                                                         uiRefs.remove();
 150                                                         continue refs;
 151                                                 }
 152                                                 if (!ui.isDisposed() && !ui.getDisplay().isDisposed()) {
 153                                                         if (ui.isTimedOut()) {
 154                                                                 if (log.isTraceEnabled())
 155                                                                         log.trace("Killing timed-out UI " + uiUuid + " in " + appPid);
 156                                                                 UiContext.killDisplay(ui.getDisplay());
 157                                                         }
 158                                                 } else {
 159                                                         if (log.isTraceEnabled())
 160                                                                 log.warn("Disposed UI " + uiUuid + " still in " + appPid + ", removing it");
 161                                                         uiRefs.remove();
 162                                                 }
 163                                         }
 164                                         if (log.isTraceEnabled())
 165                                                 log.trace(managedUis.size() + " UIs being managed by app " + appPid);
 166                                 } catch (Exception e) {
 167                                         e.printStackTrace();
 168                                 }
 169                         }
 170                 }, janitorPeriod, janitorPeriod);
 171
 172                 if (log.isDebugEnabled())
 173                         log.info("Argeo Suite App " + appPid + " started");
 174         }
 175
 176         public void stop(Map<String, Object> properties) {
 177                 refs: for (WeakReference<SwtAppUi> uiRef : managedUis.values()) {
 178                         SwtAppUi ui = uiRef.get();
 179                         if (ui == null)
 180                                 continue refs;
 181                         if (!ui.isDisposed() && !ui.getDisplay().isDisposed()) {
 182                                 ui.getDisplay().syncExec(() -> ui.dispose());
 183                         }
 184                 }
 185                 managedUis.clear();
 186                 if (log.isDebugEnabled())
 187                         log.info("Argeo Suite App stopped");
 188
 189         }
 190
 191         @Override
 192         public Set<String> getUiNames() {
 193                 HashSet<String> uiNames = new HashSet<>();
 194                 uiNames.add(defaultUiName);
 195                 uiNames.add(adminUiName);
 196                 return uiNames;
 197         }
 198
 199         @Override
 200         public CmsUi initUi(Object parent) {
 201                 Composite uiParent = (Composite) parent;
 202                 String uiName = uiParent.getData(UI_NAME_PROPERTY) != null ? uiParent.getData(UI_NAME_PROPERTY).toString()
 203                                 : null;
 204                 CmsView cmsView = CmsSwtUtils.getCmsView(uiParent);
 205                 if (cmsView == null)
 206                         throw new IllegalStateException("No CMS view is registered.");
 207                 CmsTheme theme = getTheme(uiName);
 208                 if (theme != null)
 209                         CmsSwtUtils.registerCmsTheme(uiParent.getShell(), theme);
 210                 SwtAppUi argeoSuiteUi = new SwtAppUi(uiParent, SWT.INHERIT_DEFAULT);
 211                 // TODO make timeout configurable
 212                 argeoSuiteUi.setUiTimeout(6 * 60 * 60 * 1000);// 6 hours
 213                 String uid = cmsView.getUid();
 214                 argeoSuiteUi.addDisposeListener(new CleanUpUi(uid));
 215                 managedUis.put(uid, new WeakReference<>(argeoSuiteUi));
 216                 return argeoSuiteUi;
 217         }
 218
 219         @Override
 220         public String getThemeId(String uiName) {
 221                 String themeId = System.getProperty("org.argeo.app.theme.default");
 222                 if (themeId != null)
 223                         return themeId;
 224                 return defaultThemeId;
 225         }
 226
 227         @Override
 228         public void refreshUi(CmsUi cmsUi, String state) {
 229                 try {
 230                         Content context = null;
 231                         SwtAppUi ui = (SwtAppUi) cmsUi;
 232                         ui.updateLastAccess();
 233
 234                         String uiName = Objects.toString(ui.getParent().getData(UI_NAME_PROPERTY), null);
 235                         if (uiName == null)
 236                                 throw new IllegalStateException("UI name should not be null");
 237                         CmsView cmsView = CmsSwtUtils.getCmsView(ui);
 238
 239                         ProvidedSession contentSession = (ProvidedSession) CmsUxUtils.getContentSession(contentRepository, cmsView);
 240
 241                         SwtUiProvider headerUiProvider = findStructuralUiProvider(SwtAppUi.Structural.header.name());
 242                         SwtUiProvider footerUiProvider = findStructuralUiProvider(SwtAppUi.Structural.footer.name());
 243                         SwtUiProvider leadPaneUiProvider;
 244                         if (adminUiName.equals(uiName)) {
 245                                 leadPaneUiProvider = findStructuralUiProvider(SwtAppUi.Structural.adminLeadPane.name());
 246                         } else {
 247                                 leadPaneUiProvider = findStructuralUiProvider(SwtAppUi.Structural.leadPane.name());
 248                         }
 249
 250                         Localized appTitle = null;
 251                         if (headerUiProvider instanceof DefaultHeader) {
 252                                 appTitle = ((DefaultHeader) headerUiProvider).getTitle();
 253                         }
 254                         ui.setTitle(appTitle);
 255
 256                         if (cmsView.isAnonymous() && publicBasePath == null) {// internal app, must login
 257                                 ui.logout();
 258                                 ui.setLoginScreen(true);
 259                                 if (headerUiProvider != null)
 260                                         refreshPart(headerUiProvider, ui.getHeader(), context);
 261                                 ui.refreshBelowHeader(false);
 262                                 SwtUiProvider loginScreenUiProvider = findStructuralUiProvider(SwtAppUi.Structural.loginScreen.name());
 263                                 refreshPart(loginScreenUiProvider, ui.getBelowHeader(), context);
 264                                 if (footerUiProvider != null)
 265                                         refreshPart(footerUiProvider, ui.getFooter(), context);
 266                                 ui.layout(true, true);
 267                                 setState(ui, LOGIN);
 268                         } else {
 269                                 if (LOGIN.equals(state))
 270                                         state = null;
 271                                 if (ui.isLoginScreen()) {
 272                                         ui.setLoginScreen(false);
 273                                 }
 274                                 CmsSession cmsSession = cmsView.getCmsSession();
 275                                 if (ui.getUserDir() == null) {
 276                                         // FIXME NPE on CMSSession when logging in from anonymous
 277                                         if (cmsSession == null || cmsView.isAnonymous()) {
 278                                                 assert publicBasePath != null;
 279                                                 Content userDir = contentSession
 280                                                                 .get(Content.ROOT_PATH + CmsConstants.SYS_WORKSPACE + publicBasePath);
 281                                                 ui.setUserDir(userDir);
 282                                         } else {
 283                                                 Content userDir = appUserState.getOrCreateSessionDir(cmsSession);
 284                                                 ui.setUserDir(userDir);
 285 //                                              Node userDirNode = jcrContentProvider.doInAdminSession((adminSession) -> {
 286 //                                                      Node node = SuiteUtils.getOrCreateCmsSessionNode(adminSession, cmsSession);
 287 //                                                      return node;
 288 //                                              });
 289 //                                              Content userDir = contentSession
 290 //                                                              .get(ContentUtils.SLASH + CmsConstants.SYS_WORKSPACE + userDirNode.getPath());
 291 //                                              ui.setUserDir(userDir);
 292                                         }
 293                                 }
 294                                 initLocale(cmsSession);
 295                                 context = stateToNode(ui, state);
 296                                 if (context == null)
 297                                         context = ui.getUserDir();
 298
 299                                 if (headerUiProvider != null)
 300                                         refreshPart(headerUiProvider, ui.getHeader(), context);
 301                                 ui.refreshBelowHeader(true);
 302                                 for (String key : layersByPid.keySet()) {
 303                                         SwtAppLayer layer = layersByPid.get(key).get();
 304                                         ui.addLayer(key, layer);
 305                                 }
 306
 307                                 if (leadPaneUiProvider != null)
 308                                         refreshPart(leadPaneUiProvider, ui.getLeadPane(), context);
 309                                 if (footerUiProvider != null)
 310                                         refreshPart(footerUiProvider, ui.getFooter(), context);
 311                                 ui.layout(true, true);
 312                                 setState(ui, state != null ? state : defaultLayerPid);
 313                         }
 314                 } catch (Exception e) {
 315                         CmsFeedback.error("Unexpected exception", e);
 316                 }
 317         }
 318
 319         private void initLocale(CmsSession cmsSession) {
 320                 if (cmsSession == null)
 321                         return;
 322                 Locale locale = cmsSession.getLocale();
 323                 UiContext.setLocale(locale);
 324                 LocaleUtils.setThreadLocale(locale);
 325
 326         }
 327
 328         private void refreshPart(SwtUiProvider uiProvider, Composite part, Content context) {
 329                 CmsSwtUtils.clear(part);
 330                 uiProvider.createUiPart(part, context);
 331         }
 332
 333         private SwtUiProvider findStructuralUiProvider(String suffix) {
 334                 SwtUiProvider res = null;
 335                 if (pidPrefix != null)
 336                         res = findUiProvider(pidPrefix + "." + suffix);
 337                 if (res != null)
 338                         return res;
 339                 if (sharedPidPrefix != null)
 340                         res = findUiProvider(sharedPidPrefix + "." + suffix);
 341                 return res;
 342         }
 343
 344         private SwtUiProvider findUiProvider(String pid) {
 345                 if (!uiProvidersByPid.containsKey(pid))
 346                         return null;
 347                 return uiProvidersByPid.get(pid).get();
 348         }
 349
 350         private SwtAppLayer findLayer(String pid) {
 351                 if (!layersByPid.containsKey(pid))
 352                         return null;
 353                 return layersByPid.get(pid).get();
 354         }
 355
 356         private <T> T findByType(Map<String, RankedObject<T>> byType, Content content) {
 357                 if (content == null)
 358                         throw new IllegalArgumentException("A node should be provided");
 359
 360 //              boolean checkJcr = false;
 361 //              if (checkJcr && content instanceof JcrContent) {
 362 //                      Node context = ((JcrContent) content).getJcrNode();
 363 //                      try {
 364 //                              // mixins
 365 //                              Set<String> types = new TreeSet<>();
 366 //                              for (NodeType mixinType : context.getMixinNodeTypes()) {
 367 //                                      String mixinTypeName = mixinType.getName();
 368 //                                      if (byType.containsKey(mixinTypeName)) {
 369 //                                              types.add(mixinTypeName);
 370 //                                      }
 371 //                                      for (NodeType superType : mixinType.getDeclaredSupertypes()) {
 372 //                                              if (byType.containsKey(superType.getName())) {
 373 //                                                      types.add(superType.getName());
 374 //                                              }
 375 //                                      }
 376 //                              }
 377 //                              // primary node type
 378 //                              NodeType primaryType = context.getPrimaryNodeType();
 379 //                              String primaryTypeName = primaryType.getName();
 380 //                              if (byType.containsKey(primaryTypeName)) {
 381 //                                      types.add(primaryTypeName);
 382 //                              }
 383 //                              for (NodeType superType : primaryType.getDeclaredSupertypes()) {
 384 //                                      if (byType.containsKey(superType.getName())) {
 385 //                                              types.add(superType.getName());
 386 //                                      }
 387 //                              }
 388 //                              // entity type
 389 //                              if (context.isNodeType(EntityType.entity.get())) {
 390 //                                      if (context.hasProperty(EntityNames.ENTITY_TYPE)) {
 391 //                                              String entityTypeName = context.getProperty(EntityNames.ENTITY_TYPE).getString();
 392 //                                              if (byType.containsKey(entityTypeName)) {
 393 //                                                      types.add(entityTypeName);
 394 //                                              }
 395 //                                      }
 396 //                              }
 397 //
 398 //                              if (CmsJcrUtils.isUserHome(context) && byType.containsKey("nt:folder")) {// home node
 399 //                                      types.add("nt:folder");
 400 //                              }
 401 //
 402 //                              if (types.size() == 0)
 403 //                                      throw new IllegalArgumentException(
 404 //                                                      "No type found for " + context + " (" + listTypes(context) + ")");
 405 //                              String type = types.iterator().next();
 406 //                              if (!byType.containsKey(type))
 407 //                                      throw new IllegalArgumentException("No component found for " + context + " with type " + type);
 408 //                              return byType.get(type).get();
 409 //                      } catch (RepositoryException e) {
 410 //                              throw new IllegalStateException(e);
 411 //                      }
 412 //
 413 //              } else {
 414                 Set<String> types = new TreeSet<>();
 415                 if (content.hasContentClass(EntityType.entity.qName())) {
 416                         String type = content.attr(EntityName.type.qName());
 417                         if (type != null && byType.containsKey(type))
 418                                 types.add(type);
 419                 }
 420
 421                 List<QName> objectClasses = content.getContentClasses();
 422                 for (QName cc : objectClasses) {
 423                         String type = cc.getPrefix() + ":" + cc.getLocalPart();
 424                         if (byType.containsKey(type))
 425                                 types.add(type);
 426                 }
 427                 if (types.size() == 0) {
 428                         throw new IllegalArgumentException("No type found for " + content + " (" + objectClasses + ")");
 429                 }
 430                 String type = types.iterator().next();
 431                 if (!byType.containsKey(type))
 432                         throw new IllegalArgumentException("No component found for " + content + " with type " + type);
 433                 return byType.get(type).get();
 434 //              }
 435         }
 436
 437 //      private static String listTypes(Node context) {
 438 //              try {
 439 //                      StringBuilder sb = new StringBuilder();
 440 //                      sb.append(context.getPrimaryNodeType().getName());
 441 //                      for (NodeType superType : context.getPrimaryNodeType().getDeclaredSupertypes()) {
 442 //                              sb.append(' ');
 443 //                              sb.append(superType.getName());
 444 //                      }
 445 //
 446 //                      for (NodeType nodeType : context.getMixinNodeTypes()) {
 447 //                              sb.append(' ');
 448 //                              sb.append(nodeType.getName());
 449 //                              if (nodeType.getName().equals(EntityType.local.get()))
 450 //                                      sb.append('/').append(context.getProperty(EntityNames.ENTITY_TYPE).getString());
 451 //                              for (NodeType superType : nodeType.getDeclaredSupertypes()) {
 452 //                                      sb.append(' ');
 453 //                                      sb.append(superType.getName());
 454 //                              }
 455 //                      }
 456 //                      return sb.toString();
 457 //              } catch (RepositoryException e) {
 458 //                      throw new JcrException(e);
 459 //              }
 460 //      }
 461
 462         @Override
 463         public void setState(CmsUi cmsUi, String state) {
 464                 AppUi ui = (AppUi) cmsUi;
 465                 if (state == null)
 466                         return;
 467                 if (!state.startsWith("/")) {
 468 //                      if (cmsUi instanceof SwtAppUi) {
 469 //                              SwtAppUi ui = (SwtAppUi) cmsUi;
 470                         if (LOGIN.equals(state)) {
 471                                 String appTitle = "";
 472                                 if (ui.getTitle() != null)
 473                                         appTitle = ui.getTitle().lead();
 474                                 ui.getCmsView().stateChanged(state, appTitle);
 475                                 return;
 476                         }
 477                         Map<String, Object> properties = new HashMap<>();
 478                         String layerId = HOME_STATE.equals(state) ? defaultLayerPid : state;
 479                         properties.put(SuiteUxEvent.LAYER, layerId);
 480                         properties.put(SuiteUxEvent.CONTENT_PATH, HOME_STATE);
 481                         ui.getCmsView().sendEvent(SuiteUxEvent.switchLayer.topic(), properties);
 482 //                      }
 483                         return;
 484                 }
 485 //              SwtAppUi suiteUi = (SwtAppUi) cmsUi;
 486                 if (ui.isLoginScreen()) {
 487                         return;
 488                 }
 489
 490                 Content node = stateToNode(ui, state);
 491                 if (node == null) {
 492                         ui.getCmsView().navigateTo(HOME_STATE);
 493                 } else {
 494                         ui.getCmsView().sendEvent(SuiteUxEvent.switchLayer.topic(), SuiteUxEvent.eventProperties(node));
 495                         ui.getCmsView().sendEvent(SuiteUxEvent.refreshPart.topic(), SuiteUxEvent.eventProperties(node));
 496                 }
 497         }
 498
 499         // TODO move it to an internal package?
 500         private static String nodeToState(Content node) {
 501                 return node.getPath();
 502         }
 503
 504         private Content stateToNode(CmsUi suiteUi, String state) {
 505                 if (suiteUi == null)
 506                         return null;
 507                 if (state == null || !state.startsWith("/"))
 508                         return null;
 509
 510                 String path = state;
 511
 512                 ProvidedSession contentSession = (ProvidedSession) CmsUxUtils.getContentSession(contentRepository,
 513                                 suiteUi.getCmsView());
 514                 return contentSession.get(path);
 515         }
 516
 517         /*
 518          * Events management
 519          */
 520
 521         @Override
 522         public void onEvent(String topic, Map<String, Object> event) {
 523
 524                 // Specific UI related events
 525                 SwtAppUi ui = getRelatedUi(event);
 526                 if (ui == null)
 527                         return;
 528                 ui.updateLastAccess();
 529                 ui.getCmsView().runAs(() -> {
 530                         try {
 531                                 String appTitle = "";
 532                                 if (ui.getTitle() != null)
 533                                         appTitle = ui.getTitle().lead();
 534
 535                                 if (isTopic(topic, SuiteUxEvent.refreshPart)) {
 536                                         Content node = getContentFromEvent(ui, event);
 537                                         if (node == null)
 538                                                 return;
 539                                         SwtUiProvider uiProvider = findByType(uiProvidersByType, node);
 540                                         SwtAppLayer layer = findByType(layersByType, node);
 541                                         ui.switchToLayer(layer, node);
 542                                         layer.view(uiProvider, ui.getCurrentWorkArea(), node);
 543                                         ui.getCmsView().stateChanged(nodeToState(node), stateTitle(appTitle, CmsUxUtils.getTitle(node)));
 544                                 } else if (isTopic(topic, SuiteUxEvent.openNewPart)) {
 545                                         Content node = getContentFromEvent(ui, event);
 546                                         if (node == null)
 547                                                 return;
 548                                         SwtUiProvider uiProvider = findByType(uiProvidersByType, node);
 549                                         SwtAppLayer layer = findByType(layersByType, node);
 550                                         ui.switchToLayer(layer, node);
 551                                         layer.open(uiProvider, ui.getCurrentWorkArea(), node);
 552                                         ui.getCmsView().stateChanged(nodeToState(node), stateTitle(appTitle, CmsUxUtils.getTitle(node)));
 553                                 } else if (isTopic(topic, SuiteUxEvent.switchLayer)) {
 554                                         String layerId = get(event, SuiteUxEvent.LAYER);
 555                                         if (layerId != null) {
 556                                                 SwtAppLayer suiteLayer = findLayer(layerId);
 557                                                 if (suiteLayer == null)
 558                                                         throw new IllegalArgumentException("No layer '" + layerId + "' available.");
 559                                                 Localized layerTitle = suiteLayer.getTitle();
 560                                                 // FIXME make sure we don't rebuild the work area twice
 561                                                 Composite workArea = ui.switchToLayer(layerId, ui.getUserDir());
 562                                                 String title = null;
 563                                                 if (layerTitle != null)
 564                                                         title = layerTitle.lead();
 565                                                 Content nodeFromState = getContentFromEvent(ui, event);
 566                                                 if (nodeFromState != null && nodeFromState.getPath().equals(ui.getUserDir().getPath())) {
 567                                                         // default layer view is forced
 568                                                         String state = defaultLayerPid.equals(layerId) ? "~" : layerId;
 569                                                         ui.getCmsView().stateChanged(state, stateTitle(appTitle, title));
 570                                                         suiteLayer.view(null, workArea, nodeFromState);
 571                                                 } else {
 572                                                         Content layerCurrentContext = suiteLayer.getCurrentContext(workArea);
 573                                                         if (layerCurrentContext != null && !layerCurrentContext.equals(ui.getUserDir())) {
 574                                                                 // layer was already showing a context so we set the state to it
 575                                                                 ui.getCmsView().stateChanged(nodeToState(layerCurrentContext),
 576                                                                                 stateTitle(appTitle, CmsUxUtils.getTitle(layerCurrentContext)));
 577                                                         } else {
 578                                                                 // no context was shown
 579                                                                 ui.getCmsView().stateChanged(layerId, stateTitle(appTitle, title));
 580                                                         }
 581                                                 }
 582                                         } else {
 583                                                 Content node = getContentFromEvent(ui, event);
 584                                                 if (node != null) {
 585                                                         SwtAppLayer layer = findByType(layersByType, node);
 586                                                         ui.switchToLayer(layer, node);
 587                                                 }
 588                                         }
 589                                 }
 590                         } catch (Exception e) {
 591                                 CmsFeedback.error("Cannot handle event " + topic + " " + event, e);
 592 //                              log.error("Cannot handle event " + event, e);
 593                         }
 594                 });
 595         }
 596
 597         private String stateTitle(String appTitle, String additionalTitle) {
 598                 return additionalTitle == null ? appTitle : appTitle + " - " + additionalTitle;
 599         }
 600
 601         private boolean isTopic(String topic, CmsEvent cmsEvent) {
 602                 Objects.requireNonNull(topic);
 603                 return topic.equals(cmsEvent.topic());
 604         }
 605
 606         protected Content getContentFromEvent(SwtAppUi ui, Map<String, Object> event) {
 607                 ProvidedSession contentSession = (ProvidedSession) CmsUxUtils.getContentSession(contentRepository,
 608                                 ui.getCmsView());
 609
 610                 String path = get(event, SuiteUxEvent.CONTENT_PATH);
 611
 612                 if (path != null && (path.equals(HOME_STATE) || path.equals("")))
 613                         return ui.getUserDir();
 614                 Content node;
 615                 if (path == null) {
 616                         return null;
 617 //                      // look for a user
 618 //                      String username = get(event, SuiteUxEvent.USERNAME);
 619 //                      if (username == null)
 620 //                              return null;
 621 //                      User user = cmsUserManager.getUser(username);
 622 //                      if (user == null)
 623 //                              return null;
 624 //                      node = ContentUtils.roleToContent(cmsUserManager, contentSession, user);
 625                 } else {
 626                         node = contentSession.get(path);
 627                 }
 628                 return node;
 629         }
 630
 631         private SwtAppUi getRelatedUi(Map<String, Object> eventProperties) {
 632                 WeakReference<SwtAppUi> uiRef = managedUis.get(get(eventProperties, CMS_VIEW_UID_PROPERTY));
 633                 if (uiRef == null)
 634                         return null;
 635                 return uiRef.get();
 636         }
 637
 638         public static String get(Map<String, Object> eventProperties, String key) {
 639                 Object value = eventProperties.get(key);
 640                 if (value == null)
 641                         return null;
 642                 return value.toString();
 643
 644         }
 645
 646         /*
 647          * Dependency injection.
 648          */
 649
 650         public void addUiProvider(SwtUiProvider uiProvider, Map<String, Object> properties) {
 651                 if (properties.containsKey(Constants.SERVICE_PID)) {
 652                         String pid = (String) properties.get(Constants.SERVICE_PID);
 653                         RankedObject.putIfHigherRank(uiProvidersByPid, pid, uiProvider, properties);
 654                 }
 655                 if (properties.containsKey(EntityConstants.TYPE)) {
 656                         List<String> types = LangUtils.toStringList(properties.get(EntityConstants.TYPE));
 657                         for (String type : types) {
 658                                 RankedObject.putIfHigherRank(uiProvidersByType, type, uiProvider, properties);
 659                         }
 660                 }
 661         }
 662
 663         public void removeUiProvider(SwtUiProvider uiProvider, Map<String, Object> properties) {
 664                 if (properties.containsKey(Constants.SERVICE_PID)) {
 665                         String pid = (String) properties.get(Constants.SERVICE_PID);
 666                         if (uiProvidersByPid.containsKey(pid)) {
 667                                 if (uiProvidersByPid.get(pid).equals(new RankedObject<SwtUiProvider>(uiProvider, properties))) {
 668                                         uiProvidersByPid.remove(pid);
 669                                 }
 670                         }
 671                 }
 672                 if (properties.containsKey(EntityConstants.TYPE)) {
 673                         List<String> types = LangUtils.toStringList(properties.get(EntityConstants.TYPE));
 674                         for (String type : types) {
 675                                 if (uiProvidersByType.containsKey(type)) {
 676                                         if (uiProvidersByType.get(type).equals(new RankedObject<SwtUiProvider>(uiProvider, properties))) {
 677                                                 uiProvidersByType.remove(type);
 678                                         }
 679                                 }
 680                         }
 681                 }
 682         }
 683
 684         public void addLayer(SwtAppLayer layer, Map<String, Object> properties) {
 685                 if (properties.containsKey(Constants.SERVICE_PID)) {
 686                         String pid = (String) properties.get(Constants.SERVICE_PID);
 687                         RankedObject.putIfHigherRank(layersByPid, pid, layer, properties);
 688                 }
 689                 if (properties.containsKey(EntityConstants.TYPE)) {
 690                         List<String> types = LangUtils.toStringList(properties.get(EntityConstants.TYPE));
 691                         for (String type : types)
 692                                 RankedObject.putIfHigherRank(layersByType, type, layer, properties);
 693                 }
 694         }
 695
 696         public void removeLayer(SwtAppLayer layer, Map<String, Object> properties) {
 697                 if (properties.containsKey(Constants.SERVICE_PID)) {
 698                         String pid = (String) properties.get(Constants.SERVICE_PID);
 699                         if (layersByPid.containsKey(pid)) {
 700                                 if (layersByPid.get(pid).equals(new RankedObject<SwtAppLayer>(layer, properties))) {
 701                                         layersByPid.remove(pid);
 702                                 }
 703                         }
 704                 }
 705                 if (properties.containsKey(EntityConstants.TYPE)) {
 706                         List<String> types = LangUtils.toStringList(properties.get(EntityConstants.TYPE));
 707                         for (String type : types) {
 708                                 if (layersByType.containsKey(type)) {
 709                                         if (layersByType.get(type).equals(new RankedObject<SwtAppLayer>(layer, properties))) {
 710                                                 layersByType.remove(type);
 711                                         }
 712                                 }
 713                         }
 714                 }
 715         }
 716
 717         public void setContentRepository(ContentRepository contentRepository) {
 718                 this.contentRepository = contentRepository;
 719         }
 720
 721         public void setAppUserState(AppUserState appUserState) {
 722                 this.appUserState = appUserState;
 723         }
 724
 725         /**
 726          * Dedicated class to clean up the UI in order to avoid illegal access issues
 727          * with lambdas.
 728          */
 729         private class CleanUpUi implements DisposeListener {
 730                 private static final long serialVersionUID = 1905900302262082463L;
 731                 final String uid;
 732
 733                 public CleanUpUi(String uid) {
 734                         this.uid = uid;
 735                 }
 736
 737                 @Override
 738                 public void widgetDisposed(DisposeEvent e) {
 739                         managedUis.remove(uid);
 740                         if (log.isDebugEnabled())
 741                                 log.debug("App " + appPid + " - Suite UI " + uid + " has been disposed (" + managedUis.size()
 742                                                 + " UIs still being managed).");
 743                 }
 744
 745         }
 746
 747 }