Move SWT components to their subdirectory
[gpl/argeo-suite.git] / swt / org.argeo.app.ui / src / org / argeo / app / ui / SuiteApp.java
diff --git a/swt/org.argeo.app.ui/src/org/argeo/app/ui/SuiteApp.java b/swt/org.argeo.app.ui/src/org/argeo/app/ui/SuiteApp.java
new file mode 100644 (file)
index 0000000..a8b9b2e
--- /dev/null
@@ -0,0 +1,756 @@
+package org.argeo.app.ui;
+
+import static org.argeo.api.cms.ux.CmsView.CMS_VIEW_UID_PROPERTY;
+
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.HashSet;
+import java.util.List;
+import java.util.Locale;
+import java.util.Map;
+import java.util.Objects;
+import java.util.Set;
+import java.util.TreeMap;
+import java.util.TreeSet;
+
+import javax.jcr.Node;
+import javax.jcr.RepositoryException;
+import javax.jcr.nodetype.NodeType;
+import javax.xml.namespace.QName;
+
+import org.argeo.api.acr.Content;
+import org.argeo.api.acr.ContentRepository;
+import org.argeo.api.acr.spi.ProvidedSession;
+import org.argeo.api.cms.CmsConstants;
+import org.argeo.api.cms.CmsEventSubscriber;
+import org.argeo.api.cms.CmsLog;
+import org.argeo.api.cms.CmsSession;
+import org.argeo.api.cms.ux.CmsTheme;
+import org.argeo.api.cms.ux.CmsUi;
+import org.argeo.api.cms.ux.CmsView;
+import org.argeo.app.api.EntityConstants;
+import org.argeo.app.api.EntityNames;
+import org.argeo.app.api.EntityType;
+import org.argeo.app.api.RankedObject;
+import org.argeo.cms.AbstractCmsApp;
+import org.argeo.cms.CmsUserManager;
+import org.argeo.cms.LocaleUtils;
+import org.argeo.cms.Localized;
+import org.argeo.cms.acr.ContentUtils;
+import org.argeo.cms.jcr.CmsJcrUtils;
+import org.argeo.cms.jcr.acr.JcrContent;
+import org.argeo.cms.swt.CmsSwtUtils;
+import org.argeo.cms.swt.acr.SwtUiProvider;
+import org.argeo.cms.swt.dialogs.CmsFeedback;
+import org.argeo.cms.ux.CmsUxUtils;
+import org.argeo.eclipse.ui.specific.UiContext;
+import org.argeo.jcr.JcrException;
+import org.argeo.util.LangUtils;
+import org.eclipse.swt.SWT;
+import org.eclipse.swt.widgets.Composite;
+import org.osgi.framework.Constants;
+import org.osgi.service.useradmin.User;
+
+/** The Argeo Suite App. */
+public class SuiteApp extends AbstractCmsApp implements CmsEventSubscriber {
+       private final static CmsLog log = CmsLog.getLog(SuiteApp.class);
+
+       public final static String PUBLIC_BASE_PATH_PROPERTY = "publicBasePath";
+       public final static String DEFAULT_UI_NAME_PROPERTY = "defaultUiName";
+       public final static String DEFAULT_THEME_ID_PROPERTY = "defaultThemeId";
+       public final static String DEFAULT_LAYER_PROPERTY = "defaultLayer";
+       private final static String LOGIN = "login";
+       private final static String HOME_STATE = "~";
+
+       private String publicBasePath = null;
+
+       private String pidPrefix;
+       private String headerPid;
+       private String footerPid;
+       private String leadPanePid;
+       private String adminLeadPanePid;
+       private String loginScreenPid;
+
+       private String defaultUiName = "app";
+       private String adminUiName = "admin";
+
+       // FIXME such default names make refactoring more dangerous
+       @Deprecated
+       private String defaultLayerPid = "argeo.suite.ui.dashboardLayer";
+       @Deprecated
+       private String defaultThemeId = "org.argeo.app.theme.default";
+
+       // TODO use QName as key for byType
+       private Map<String, RankedObject<SwtUiProvider>> uiProvidersByPid = Collections.synchronizedMap(new HashMap<>());
+       private Map<String, RankedObject<SwtUiProvider>> uiProvidersByType = Collections.synchronizedMap(new HashMap<>());
+       private Map<String, RankedObject<SuiteLayer>> layersByPid = Collections.synchronizedSortedMap(new TreeMap<>());
+       private Map<String, RankedObject<SuiteLayer>> layersByType = Collections.synchronizedSortedMap(new TreeMap<>());
+
+       private CmsUserManager cmsUserManager;
+
+       // TODO make more optimal or via CmsSession/CmsView
+       private Map<String, SuiteUi> managedUis = new HashMap<>();
+
+       // ACR
+       private ContentRepository contentRepository;
+//     private JcrContentProvider jcrContentProvider;
+
+       // JCR
+//     private Repository repository;
+
+       public void init(Map<String, Object> properties) {
+               for (SuiteEvent event : SuiteEvent.values()) {
+                       getCmsContext().getCmsEventBus().addEventSubscriber(event.topic(), this);
+               }
+
+               if (log.isDebugEnabled())
+                       log.info("Argeo Suite App started");
+
+               if (properties.containsKey(DEFAULT_UI_NAME_PROPERTY))
+                       defaultUiName = LangUtils.get(properties, DEFAULT_UI_NAME_PROPERTY);
+               if (properties.containsKey(DEFAULT_THEME_ID_PROPERTY))
+                       defaultThemeId = LangUtils.get(properties, DEFAULT_THEME_ID_PROPERTY);
+               if (properties.containsKey(DEFAULT_LAYER_PROPERTY))
+                       defaultLayerPid = LangUtils.get(properties, DEFAULT_LAYER_PROPERTY);
+               publicBasePath = LangUtils.get(properties, PUBLIC_BASE_PATH_PROPERTY);
+
+               if (properties.containsKey(Constants.SERVICE_PID)) {
+                       String servicePid = properties.get(Constants.SERVICE_PID).toString();
+                       if (servicePid.endsWith(".app")) {
+                               pidPrefix = servicePid.substring(0, servicePid.length() - "app".length());
+                       }
+               }
+
+               if (pidPrefix == null)
+                       throw new IllegalArgumentException("PID prefix must be set.");
+
+               headerPid = pidPrefix + "header";
+               footerPid = pidPrefix + "footer";
+               leadPanePid = pidPrefix + "leadPane";
+               adminLeadPanePid = pidPrefix + "adminLeadPane";
+               loginScreenPid = pidPrefix + "loginScreen";
+       }
+
+       public void destroy(Map<String, Object> properties) {
+               for (SuiteUi ui : managedUis.values())
+                       if (!ui.isDisposed()) {
+                               ui.getDisplay().syncExec(() -> ui.dispose());
+                       }
+               if (log.isDebugEnabled())
+                       log.info("Argeo Suite App stopped");
+
+       }
+
+       @Override
+       public Set<String> getUiNames() {
+               HashSet<String> uiNames = new HashSet<>();
+               uiNames.add(defaultUiName);
+               uiNames.add(adminUiName);
+               return uiNames;
+       }
+
+       @Override
+       public CmsUi initUi(Object parent) {
+               Composite uiParent = (Composite) parent;
+               String uiName = uiParent.getData(UI_NAME_PROPERTY) != null ? uiParent.getData(UI_NAME_PROPERTY).toString()
+                               : null;
+               CmsView cmsView = CmsSwtUtils.getCmsView(uiParent);
+               if (cmsView == null)
+                       throw new IllegalStateException("No CMS view is registered.");
+               CmsTheme theme = getTheme(uiName);
+               if (theme != null)
+                       CmsSwtUtils.registerCmsTheme(uiParent.getShell(), theme);
+               SuiteUi argeoSuiteUi = new SuiteUi(uiParent, SWT.INHERIT_DEFAULT);
+               String uid = cmsView.getUid();
+               managedUis.put(uid, argeoSuiteUi);
+               argeoSuiteUi.addDisposeListener((e) -> {
+                       managedUis.remove(uid);
+                       if (log.isDebugEnabled())
+                               log.debug("Suite UI " + uid + " has been disposed.");
+               });
+               return argeoSuiteUi;
+       }
+
+       @Override
+       public String getThemeId(String uiName) {
+               String themeId = System.getProperty("org.argeo.app.theme.default");
+               if (themeId != null)
+                       return themeId;
+               return defaultThemeId;
+       }
+
+       @Override
+       public void refreshUi(CmsUi cmsUi, String state) {
+               try {
+                       Content context = null;
+                       SuiteUi ui = (SuiteUi) cmsUi;
+
+                       String uiName = Objects.toString(ui.getParent().getData(UI_NAME_PROPERTY), null);
+                       if (uiName == null)
+                               throw new IllegalStateException("UI name should not be null");
+                       CmsView cmsView = CmsSwtUtils.getCmsView(ui);
+
+                       ProvidedSession contentSession = (ProvidedSession) CmsUxUtils.getContentSession(contentRepository, cmsView);
+
+                       SwtUiProvider headerUiProvider = findUiProvider(headerPid);
+                       SwtUiProvider footerUiProvider = findUiProvider(footerPid);
+                       SwtUiProvider leadPaneUiProvider;
+                       if (adminUiName.equals(uiName)) {
+                               leadPaneUiProvider = findUiProvider(adminLeadPanePid);
+                       } else {
+                               leadPaneUiProvider = findUiProvider(leadPanePid);
+                       }
+
+                       Localized appTitle = null;
+                       if (headerUiProvider instanceof DefaultHeader) {
+                               appTitle = ((DefaultHeader) headerUiProvider).getTitle();
+                       }
+                       ui.setTitle(appTitle);
+
+                       if (cmsView.isAnonymous() && publicBasePath == null) {// internal app, must login
+                               ui.logout();
+                               ui.setLoginScreen(true);
+                               if (headerUiProvider != null)
+                                       refreshPart(headerUiProvider, ui.getHeader(), context);
+                               ui.refreshBelowHeader(false);
+                               refreshPart(findUiProvider(loginScreenPid), ui.getBelowHeader(), context);
+                               if (footerUiProvider != null)
+                                       refreshPart(footerUiProvider, ui.getFooter(), context);
+                               ui.layout(true, true);
+                               setState(ui, LOGIN);
+                       } else {
+                               if (LOGIN.equals(state))
+                                       state = null;
+                               if (ui.isLoginScreen()) {
+//                                     if (state == null)
+//                                             state = ui.getPostLoginState();
+                                       ui.setLoginScreen(false);
+//                                     ui.setPostLoginState(null);
+                               }
+                               CmsSession cmsSession = cmsView.getCmsSession();
+                               if (ui.getUserDirNode() == null) {
+                                       // FIXME NPE on CMSSession when logging in from anonymous
+                                       if (cmsSession == null || cmsView.isAnonymous()) {
+                                               assert publicBasePath != null;
+                                               Content userDir = contentSession
+                                                               .get(ContentUtils.SLASH + CmsConstants.SYS_WORKSPACE + publicBasePath);
+                                               ui.setUserDir(userDir);
+//                                             ui.initSessions(getRepository(), publicBasePath);
+                                       } else {
+//                                             Session adminSession = null;
+//                                             try {
+//                                                     adminSession = CmsJcrUtils.openDataAdminSession(getRepository(), null);
+//                                                     Node userDirNode = SuiteUtils.getOrCreateCmsSessionNode(adminSession, cmsSession);
+//                                                     Content userDir = contentSession.get(CmsConstants.SYS_WORKSPACE + userDirNode.getPath());
+//                                                     ui.setUserDir(userDir);
+////                                                   ui.initSessions(getRepository(), userDirNode.getPath());
+//                                             } finally {
+//                                                     Jcr.logout(adminSession);
+//                                             }
+                                               Content userDir = contentSession.getSessionRunDir();
+                                               ui.setUserDir(userDir);
+                                       }
+                               }
+                               initLocale(cmsSession);
+                               context = stateToNode(ui, state);
+                               if (context == null)
+                                       context = ui.getUserDirNode();
+
+                               if (headerUiProvider != null)
+                                       refreshPart(headerUiProvider, ui.getHeader(), context);
+                               ui.refreshBelowHeader(true);
+                               for (String key : layersByPid.keySet()) {
+                                       SuiteLayer layer = layersByPid.get(key).get();
+                                       ui.addLayer(key, layer);
+                               }
+
+                               if (leadPaneUiProvider != null)
+                                       refreshPart(leadPaneUiProvider, ui.getLeadPane(), context);
+                               if (footerUiProvider != null)
+                                       refreshPart(footerUiProvider, ui.getFooter(), context);
+                               ui.layout(true, true);
+                               setState(ui, state != null ? state : defaultLayerPid);
+                       }
+               } catch (Exception e) {
+                       CmsFeedback.error("Unexpected exception", e);
+               }
+       }
+
+       private void initLocale(CmsSession cmsSession) {
+               if (cmsSession == null)
+                       return;
+               Locale locale = cmsSession.getLocale();
+               UiContext.setLocale(locale);
+               LocaleUtils.setThreadLocale(locale);
+
+       }
+
+       private void refreshPart(SwtUiProvider uiProvider, Composite part, Content context) {
+               CmsSwtUtils.clear(part);
+               uiProvider.createUiPart(part, context);
+       }
+
+       private SwtUiProvider findUiProvider(String pid) {
+               if (!uiProvidersByPid.containsKey(pid))
+                       return null;
+               return uiProvidersByPid.get(pid).get();
+       }
+
+       private SuiteLayer findLayer(String pid) {
+               if (!layersByPid.containsKey(pid))
+                       return null;
+               return layersByPid.get(pid).get();
+       }
+
+       private <T> T findByType(Map<String, RankedObject<T>> byType, Content content) {
+               if (content == null)
+                       throw new IllegalArgumentException("A node should be provided");
+
+               if (content instanceof JcrContent) {
+                       Node context = ((JcrContent) content).getJcrNode();
+                       try {
+                               // mixins
+                               Set<String> types = new TreeSet<>();
+                               for (NodeType mixinType : context.getMixinNodeTypes()) {
+                                       String mixinTypeName = mixinType.getName();
+                                       if (byType.containsKey(mixinTypeName)) {
+                                               types.add(mixinTypeName);
+                                       }
+                                       for (NodeType superType : mixinType.getDeclaredSupertypes()) {
+                                               if (byType.containsKey(superType.getName())) {
+                                                       types.add(superType.getName());
+                                               }
+                                       }
+                               }
+                               // primary node type
+                               NodeType primaryType = context.getPrimaryNodeType();
+                               String primaryTypeName = primaryType.getName();
+                               if (byType.containsKey(primaryTypeName)) {
+                                       types.add(primaryTypeName);
+                               }
+                               for (NodeType superType : primaryType.getDeclaredSupertypes()) {
+                                       if (byType.containsKey(superType.getName())) {
+                                               types.add(superType.getName());
+                                       }
+                               }
+                               // entity type
+                               if (context.isNodeType(EntityType.entity.get())) {
+                                       if (context.hasProperty(EntityNames.ENTITY_TYPE)) {
+                                               String entityTypeName = context.getProperty(EntityNames.ENTITY_TYPE).getString();
+                                               if (byType.containsKey(entityTypeName)) {
+                                                       types.add(entityTypeName);
+                                               }
+                                       }
+                               }
+
+//                     if (context.getPath().equals("/")) {// root node
+//                             types.add("nt:folder");
+//                     }
+                               if (CmsJcrUtils.isUserHome(context) && byType.containsKey("nt:folder")) {// home node
+                                       types.add("nt:folder");
+                               }
+
+                               if (types.size() == 0)
+                                       throw new IllegalArgumentException(
+                                                       "No type found for " + context + " (" + listTypes(context) + ")");
+                               String type = types.iterator().next();
+                               if (!byType.containsKey(type))
+                                       throw new IllegalArgumentException("No component found for " + context + " with type " + type);
+                               return byType.get(type).get();
+                       } catch (RepositoryException e) {
+                               throw new IllegalStateException(e);
+                       }
+
+               } else {
+
+                       List<QName> objectClasses = content.getContentClasses();
+                       Set<String> types = new TreeSet<>();
+                       for (QName cc : objectClasses) {
+                               String type = cc.getPrefix() + ":" + cc.getLocalPart();
+                               if (byType.containsKey(type))
+                                       types.add(type);
+                       }
+                       if (types.size() == 0) {
+                               throw new IllegalArgumentException("No type found for " + content + " (" + objectClasses + ")");
+                       }
+                       String type = types.iterator().next();
+                       if (!byType.containsKey(type))
+                               throw new IllegalArgumentException("No component found for " + content + " with type " + type);
+                       return byType.get(type).get();
+                       // throw new UnsupportedOperationException("Content " +
+                       // content.getClass().getName() + " is not supported.");
+               }
+       }
+
+       private static String listTypes(Node context) {
+               try {
+                       StringBuilder sb = new StringBuilder();
+                       sb.append(context.getPrimaryNodeType().getName());
+                       for (NodeType superType : context.getPrimaryNodeType().getDeclaredSupertypes()) {
+                               sb.append(' ');
+                               sb.append(superType.getName());
+                       }
+
+                       for (NodeType nodeType : context.getMixinNodeTypes()) {
+                               sb.append(' ');
+                               sb.append(nodeType.getName());
+                               if (nodeType.getName().equals(EntityType.local.get()))
+                                       sb.append('/').append(context.getProperty(EntityNames.ENTITY_TYPE).getString());
+                               for (NodeType superType : nodeType.getDeclaredSupertypes()) {
+                                       sb.append(' ');
+                                       sb.append(superType.getName());
+                               }
+                       }
+                       return sb.toString();
+               } catch (RepositoryException e) {
+                       throw new JcrException(e);
+               }
+       }
+
+       @Override
+       public void setState(CmsUi cmsUi, String state) {
+               if (state == null)
+                       return;
+               if (!state.startsWith("/")) {
+                       if (cmsUi instanceof SuiteUi) {
+                               SuiteUi ui = (SuiteUi) cmsUi;
+                               if (LOGIN.equals(state)) {
+                                       String appTitle = "";
+                                       if (ui.getTitle() != null)
+                                               appTitle = ui.getTitle().lead();
+                                       ui.getCmsView().stateChanged(state, appTitle);
+                                       return;
+                               }
+                               Map<String, Object> properties = new HashMap<>();
+                               String layerId = HOME_STATE.equals(state) ? defaultLayerPid : state;
+                               properties.put(SuiteEvent.LAYER, layerId);
+                               properties.put(SuiteEvent.NODE_PATH, HOME_STATE);
+                               ui.getCmsView().sendEvent(SuiteEvent.switchLayer.topic(), properties);
+                       }
+                       return;
+               }
+               SuiteUi suiteUi = (SuiteUi) cmsUi;
+               if (suiteUi.isLoginScreen()) {
+//                     suiteUi.setPostLoginState(state);
+                       return;
+               }
+
+               Content node = stateToNode(suiteUi, state);
+               if (node == null) {
+                       suiteUi.getCmsView().navigateTo(HOME_STATE);
+               } else {
+                       suiteUi.getCmsView().sendEvent(SuiteEvent.switchLayer.topic(), SuiteEvent.eventProperties(node));
+                       suiteUi.getCmsView().sendEvent(SuiteEvent.refreshPart.topic(), SuiteEvent.eventProperties(node));
+               }
+       }
+
+       // TODO move it to an internal package?
+       static String nodeToState(Content node) {
+               return node.getPath();
+       }
+
+       private Content stateToNode(SuiteUi suiteUi, String state) {
+               if (suiteUi == null)
+                       return null;
+               if (state == null || !state.startsWith("/"))
+                       return null;
+
+               String path = state;
+//             String path = state.substring(1);
+//             String workspace;
+//             if (path.equals("")) {
+//                     workspace = null;
+//                     path = "/";
+//             } else {
+//                     int index = path.indexOf('/');
+//                     if (index == 0) {
+//                             log.error("Cannot interpret " + state);
+////                           cmsView.navigateTo("~");
+//                             return null;
+//                     } else if (index > 0) {
+//                             workspace = path.substring(0, index);
+//                             path = path.substring(index);
+//                     } else {// index<0, assuming root node
+//                             workspace = path;
+//                             path = "/";
+//                     }
+//             }
+
+               ProvidedSession contentSession = (ProvidedSession) CmsUxUtils.getContentSession(contentRepository,
+                               suiteUi.getCmsView());
+               return contentSession.get(path);
+//             Session session = jcrContentProvider.getJcrSession(contentSession, workspace);
+////           Session session = suiteUi.getSession(workspace);
+//             if (session == null)
+//                     return null;
+//             Node node = Jcr.getNode(session, path);
+//             return node;
+       }
+
+       /*
+        * Events management
+        */
+
+       @Override
+       public void onEvent(String topic, Map<String, Object> event) {
+
+               // Specific UI related events
+               SuiteUi ui = getRelatedUi(event);
+               if (ui == null)
+                       return;
+               ui.getCmsView().runAs(() -> {
+                       try {
+                               String appTitle = "";
+                               if (ui.getTitle() != null)
+                                       appTitle = ui.getTitle().lead() + " - ";
+
+//                     String currentLayerId = ui.getCurrentLayerId();
+//                     SuiteLayer currentLayer = currentLayerId != null ? layersByPid.get(currentLayerId).get() : null;
+                               if (SuiteUiUtils.isTopic(topic, SuiteEvent.refreshPart)) {
+                                       Content node = getNode(ui, event);
+                                       if (node == null)
+                                               return;
+                                       SwtUiProvider uiProvider = findByType(uiProvidersByType, node);
+                                       SuiteLayer layer = findByType(layersByType, node);
+                                       ui.switchToLayer(layer, node);
+                                       layer.view(uiProvider, ui.getCurrentWorkArea(), node);
+                                       ui.getCmsView().stateChanged(nodeToState(node), appTitle + CmsUxUtils.getTitle(node));
+                               } else if (SuiteUiUtils.isTopic(topic, SuiteEvent.openNewPart)) {
+                                       Content node = getNode(ui, event);
+                                       if (node == null)
+                                               return;
+                                       SwtUiProvider uiProvider = findByType(uiProvidersByType, node);
+                                       SuiteLayer layer = findByType(layersByType, node);
+                                       ui.switchToLayer(layer, node);
+                                       layer.open(uiProvider, ui.getCurrentWorkArea(), node);
+                                       ui.getCmsView().stateChanged(nodeToState(node), appTitle + CmsUxUtils.getTitle(node));
+                               } else if (SuiteUiUtils.isTopic(topic, SuiteEvent.switchLayer)) {
+                                       String layerId = get(event, SuiteEvent.LAYER);
+                                       if (layerId != null) {
+//                                     ui.switchToLayer(layerId, ui.getUserDir());
+                                               SuiteLayer suiteLayer = findLayer(layerId);
+                                               if (suiteLayer == null)
+                                                       throw new IllegalArgumentException("No layer '" + layerId + "' available.");
+                                               Localized layerTitle = suiteLayer.getTitle();
+                                               // FIXME make sure we don't rebuild the work area twice
+                                               Composite workArea = ui.switchToLayer(layerId, ui.getUserDirNode());
+                                               String title = null;
+                                               if (layerTitle != null)
+                                                       title = layerTitle.lead();
+                                               Content nodeFromState = getNode(ui, event);
+                                               if (nodeFromState != null && nodeFromState.getPath().equals(ui.getUserDirNode().getPath())) {
+                                                       // default layer view is forced
+                                                       String state = defaultLayerPid.equals(layerId) ? "~" : layerId;
+                                                       ui.getCmsView().stateChanged(state, appTitle + title);
+                                                       suiteLayer.view(null, workArea, nodeFromState);
+                                               } else {
+                                                       Content layerCurrentContext = suiteLayer.getCurrentContext(workArea);
+                                                       if (layerCurrentContext != null) {
+                                                               // layer was already showing a context so we set the state to it
+                                                               ui.getCmsView().stateChanged(nodeToState(layerCurrentContext),
+                                                                               appTitle + CmsUxUtils.getTitle(layerCurrentContext));
+                                                       } else {
+                                                               // no context was shown
+                                                               ui.getCmsView().stateChanged(layerId, appTitle + title);
+                                                       }
+                                               }
+                                       } else {
+                                               Content node = getNode(ui, event);
+                                               if (node != null) {
+                                                       SuiteLayer layer = findByType(layersByType, node);
+                                                       ui.switchToLayer(layer, node);
+                                               }
+                                       }
+                               }
+                       } catch (Exception e) {
+                               CmsFeedback.error("Cannot handle event " + topic + " " + event, e);
+//                             log.error("Cannot handle event " + event, e);
+                       }
+               });
+       }
+
+       private Content getNode(SuiteUi ui, Map<String, Object> event) {
+               ProvidedSession contentSession = (ProvidedSession) CmsUxUtils.getContentSession(contentRepository,
+                               ui.getCmsView());
+
+               String path = get(event, SuiteEvent.CONTENT_PATH);
+
+//             String nodePath = get(event, SuiteEvent.NODE_PATH);
+               if (path != null && path.equals(HOME_STATE))
+                       return ui.getUserDir();
+//             String workspace = get(event, SuiteEvent.WORKSPACE);
+
+//             Session session = jcrContentProvider.getJcrSession(contentSession, workspace);
+////           Session session = ui.getSession(workspace);
+               Content node;
+               if (path == null) {
+                       // look for a user
+                       String username = get(event, SuiteEvent.USERNAME);
+                       if (username == null)
+                               return null;
+                       User user = cmsUserManager.getUser(username);
+                       if (user == null)
+                               return null;
+                       node = ContentUtils.roleToContent(cmsUserManager, contentSession, user);
+//                     LdapName userDn;
+//                     try {
+//                             userDn = new LdapName(user.getName());
+//                     } catch (InvalidNameException e) {
+//                             throw new IllegalArgumentException("Badly formatted username", e);
+//                     }
+//                     String userNodePath = SuiteUtils.getUserNodePath(userDn);
+                       // FIXME deal with home path
+//                     return null;
+//                     if (Jcr.itemExists(session, userNodePath))
+//                             node = Jcr.getNode(session, userNodePath);
+//                     else {
+//                             Session adminSession = null;
+//                             try {
+//                                     adminSession = CmsJcrUtils.openDataAdminSession(getRepository(), workspace);
+//                                     SuiteUtils.getOrCreateUserNode(adminSession, userDn);
+//                             } finally {
+//                                     Jcr.logout(adminSession);
+//                             }
+//                             node = Jcr.getNode(session, userNodePath);
+//                     }
+               } else {
+                       node = contentSession.get(path);
+               }
+               return node;
+       }
+
+       private SuiteUi getRelatedUi(Map<String, Object> eventProperties) {
+               return managedUis.get(get(eventProperties, CMS_VIEW_UID_PROPERTY));
+       }
+
+       public static String get(Map<String, Object> eventProperties, String key) {
+               Object value = eventProperties.get(key);
+               if (value == null)
+                       return null;
+//                     throw new IllegalArgumentException("Property " + key + " must be set");
+               return value.toString();
+
+       }
+
+       /*
+        * Dependency injection.
+        */
+
+       public void addUiProvider(SwtUiProvider uiProvider, Map<String, Object> properties) {
+               if (properties.containsKey(Constants.SERVICE_PID)) {
+                       String pid = (String) properties.get(Constants.SERVICE_PID);
+                       RankedObject.putIfHigherRank(uiProvidersByPid, pid, uiProvider, properties);
+               }
+               if (properties.containsKey(EntityConstants.TYPE)) {
+                       List<String> types = LangUtils.toStringList(properties.get(EntityConstants.TYPE));
+                       for (String type : types) {
+                               RankedObject.putIfHigherRank(uiProvidersByType, type, uiProvider, properties);
+                       }
+               }
+       }
+
+       public void removeUiProvider(SwtUiProvider uiProvider, Map<String, Object> properties) {
+               if (properties.containsKey(Constants.SERVICE_PID)) {
+                       String pid = (String) properties.get(Constants.SERVICE_PID);
+                       if (uiProvidersByPid.containsKey(pid)) {
+                               if (uiProvidersByPid.get(pid).equals(new RankedObject<SwtUiProvider>(uiProvider, properties))) {
+                                       uiProvidersByPid.remove(pid);
+                               }
+                       }
+               }
+               if (properties.containsKey(EntityConstants.TYPE)) {
+                       List<String> types = LangUtils.toStringList(properties.get(EntityConstants.TYPE));
+                       for (String type : types) {
+                               if (uiProvidersByType.containsKey(type)) {
+                                       if (uiProvidersByType.get(type).equals(new RankedObject<SwtUiProvider>(uiProvider, properties))) {
+                                               uiProvidersByType.remove(type);
+                                       }
+                               }
+                       }
+               }
+       }
+
+//     public void addLayer(SuiteLayer layer, Map<String, Object> properties) {
+//             if (!properties.containsKey(Constants.SERVICE_PID))
+//                     throw new IllegalArgumentException("A layer must have an ID");
+//             String pid = (String) properties.get(Constants.SERVICE_PID);
+//             List<String> types = properties.containsKey(EntityConstants.TYPE)
+//                             ? LangUtils.toStringList(properties.get(EntityConstants.TYPE))
+//                             : new ArrayList<>();
+//             if (types.isEmpty()) {
+//                     RankedObject.putIfHigherRank(layersByPid, pid, layer, properties);
+//             } else {
+//                     if (layersByPid.containsKey(pid)) {
+//                             RankedObject<SuiteLayer> current = layersByPid.get(pid);
+//                             List<String> currentTypes = current.getProperties().containsKey(EntityConstants.TYPE)
+//                                             ? LangUtils.toStringList(current.getProperties().get(EntityConstants.TYPE))
+//                                             : new ArrayList<>();
+//                             if (!types.containsAll(currentTypes)) {
+//                                     throw new IllegalArgumentException("Higher-ranked layer " + pid + " contains only types " + types
+//                                                     + ", while it must override all " + currentTypes);
+//                             }
+//                     }
+//                     RankedObject.putIfHigherRank(layersByPid, pid, layer, properties);
+//                     for (String type : types)
+//                             RankedObject.putIfHigherRank(layersByType, type, layer, properties);
+//             }
+//     }
+
+       public void addLayer(SuiteLayer layer, Map<String, Object> properties) {
+               if (properties.containsKey(Constants.SERVICE_PID)) {
+                       String pid = (String) properties.get(Constants.SERVICE_PID);
+                       RankedObject.putIfHigherRank(layersByPid, pid, layer, properties);
+               }
+               if (properties.containsKey(EntityConstants.TYPE)) {
+                       List<String> types = LangUtils.toStringList(properties.get(EntityConstants.TYPE));
+                       for (String type : types)
+                               RankedObject.putIfHigherRank(layersByType, type, layer, properties);
+               }
+       }
+
+       public void removeLayer(SuiteLayer layer, Map<String, Object> properties) {
+               if (properties.containsKey(Constants.SERVICE_PID)) {
+                       String pid = (String) properties.get(Constants.SERVICE_PID);
+                       if (layersByPid.containsKey(pid)) {
+                               if (layersByPid.get(pid).equals(new RankedObject<SuiteLayer>(layer, properties))) {
+                                       layersByPid.remove(pid);
+                               }
+                       }
+               }
+               if (properties.containsKey(EntityConstants.TYPE)) {
+                       List<String> types = LangUtils.toStringList(properties.get(EntityConstants.TYPE));
+                       for (String type : types) {
+                               if (layersByType.containsKey(type)) {
+                                       if (layersByType.get(type).equals(new RankedObject<SuiteLayer>(layer, properties))) {
+                                               layersByType.remove(type);
+                                       }
+                               }
+                       }
+               }
+       }
+
+       public void setCmsUserManager(CmsUserManager cmsUserManager) {
+               this.cmsUserManager = cmsUserManager;
+       }
+
+//     protected Repository getRepository() {
+//             return repository;
+//     }
+//
+//     public void setRepository(Repository repository) {
+//             this.repository = repository;
+//     }
+
+       protected ContentRepository getContentRepository() {
+               return contentRepository;
+       }
+
+       public void setContentRepository(ContentRepository contentRepository) {
+               this.contentRepository = contentRepository;
+       }
+
+//     public void setJcrContentProvider(JcrContentProvider jcrContentProvider) {
+//             this.jcrContentProvider = jcrContentProvider;
+//     }
+
+}