org.argeo.cms.ui.rap/src/org/argeo/cms/web/CmsWebEntryPoint.java

   1 package org.argeo.cms.web;
   2
   3 import static org.eclipse.rap.rwt.internal.service.ContextProvider.getApplicationContext;
   4
   5 import java.security.PrivilegedAction;
   6 import java.util.HashMap;
   7 import java.util.Locale;
   8 import java.util.Map;
   9 import java.util.UUID;
  10
  11 import javax.security.auth.Subject;
  12 import javax.security.auth.login.LoginContext;
  13 import javax.security.auth.login.LoginException;
  14
  15 import org.apache.commons.logging.Log;
  16 import org.apache.commons.logging.LogFactory;
  17 import org.argeo.api.NodeConstants;
  18 import org.argeo.api.cms.CmsApp;
  19 import org.argeo.api.cms.CmsImageManager;
  20 import org.argeo.api.cms.CmsSession;
  21 import org.argeo.api.cms.CmsUi;
  22 import org.argeo.api.cms.CmsView;
  23 import org.argeo.api.cms.UxContext;
  24 import org.argeo.cms.LocaleUtils;
  25 import org.argeo.cms.auth.CurrentUser;
  26 import org.argeo.cms.auth.HttpRequestCallbackHandler;
  27 import org.argeo.cms.osgi.CmsOsgiUtils;
  28 import org.argeo.cms.swt.CmsSwtUtils;
  29 import org.argeo.cms.swt.SimpleSwtUxContext;
  30 import org.argeo.cms.swt.dialogs.CmsFeedback;
  31 import org.argeo.cms.ui.util.DefaultImageManager;
  32 import org.argeo.eclipse.ui.specific.UiContext;
  33 import org.eclipse.rap.rwt.RWT;
  34 import org.eclipse.rap.rwt.application.EntryPoint;
  35 import org.eclipse.rap.rwt.client.service.BrowserNavigation;
  36 import org.eclipse.rap.rwt.client.service.BrowserNavigationEvent;
  37 import org.eclipse.rap.rwt.client.service.BrowserNavigationListener;
  38 import org.eclipse.rap.rwt.internal.lifecycle.RWTLifeCycle;
  39 import org.eclipse.swt.SWT;
  40 import org.eclipse.swt.SWTError;
  41 import org.eclipse.swt.widgets.Composite;
  42 import org.eclipse.swt.widgets.Display;
  43 import org.eclipse.swt.widgets.Shell;
  44 import org.osgi.service.event.Event;
  45 import org.osgi.service.event.EventAdmin;
  46
  47 /** The {@link CmsView} for a {@link CmsWebApp}. */
  48 @SuppressWarnings("restriction")
  49 public class CmsWebEntryPoint implements EntryPoint, CmsView, BrowserNavigationListener {
  50         private static final long serialVersionUID = 7733510691684570402L;
  51         private final static Log log = LogFactory.getLog(CmsWebEntryPoint.class);
  52
  53         private EventAdmin eventAdmin;
  54
  55         private final CmsWebApp cmsWebApp;
  56         private final String uiName;
  57
  58         private LoginContext loginContext;
  59         private String state;
  60         private Throwable exception;
  61         private UxContext uxContext;
  62         private CmsImageManager imageManager;
  63
  64         private Display display;
  65         private CmsUi ui;
  66
  67         private String uid;
  68
  69         // Client services
  70         // private final JavaScriptExecutor jsExecutor;
  71         private final BrowserNavigation browserNavigation;
  72
  73         /** Experimental OS-like multi windows. */
  74         private boolean multipleShells = false;
  75
  76         public CmsWebEntryPoint(CmsWebApp cmsWebApp, String uiName) {
  77                 assert cmsWebApp != null;
  78                 assert uiName != null;
  79                 this.cmsWebApp = cmsWebApp;
  80                 this.uiName = uiName;
  81                 uid = UUID.randomUUID().toString();
  82
  83                 // Initial login
  84                 LoginContext lc;
  85                 try {
  86                         lc = new LoginContext(NodeConstants.LOGIN_CONTEXT_USER,
  87                                         new HttpRequestCallbackHandler(UiContext.getHttpRequest(), UiContext.getHttpResponse()));
  88                         lc.login();
  89                 } catch (LoginException e) {
  90                         try {
  91                                 lc = new LoginContext(NodeConstants.LOGIN_CONTEXT_ANONYMOUS);
  92                                 lc.login();
  93                         } catch (LoginException e1) {
  94                                 throw new IllegalStateException("Cannot log in as anonymous", e1);
  95                         }
  96                 }
  97                 authChange(lc);
  98
  99                 // jsExecutor = RWT.getClient().getService(JavaScriptExecutor.class);
 100                 browserNavigation = RWT.getClient().getService(BrowserNavigation.class);
 101                 if (browserNavigation != null)
 102                         browserNavigation.addBrowserNavigationListener(this);
 103         }
 104
 105         protected void createContents(Composite parent) {
 106                 Subject.doAs(loginContext.getSubject(), new PrivilegedAction<Void>() {
 107                         @Override
 108                         public Void run() {
 109                                 try {
 110                                         uxContext = new SimpleSwtUxContext();
 111                                         imageManager = new DefaultImageManager();
 112                                         CmsSession cmsSession = getCmsSession();
 113                                         if (cmsSession != null) {
 114                                                 UiContext.setLocale(cmsSession.getLocale());
 115                                                 LocaleUtils.setThreadLocale(cmsSession.getLocale());
 116                                         } else {
 117                                                 Locale rwtLocale = RWT.getUISession().getLocale();
 118                                                 LocaleUtils.setThreadLocale(rwtLocale);
 119                                         }
 120                                         parent.setData(CmsApp.UI_NAME_PROPERTY, uiName);
 121                                         display = parent.getDisplay();
 122                                         ui = cmsWebApp.getCmsApp().initUi(parent);
 123                                         if (ui instanceof Composite)
 124                                                 ((Composite) ui).setLayoutData(CmsSwtUtils.fillAll());
 125                                         // we need ui to be set before refresh so that CmsView can store UI context data
 126                                         // in it.
 127                                         cmsWebApp.getCmsApp().refreshUi(ui, null);
 128                                 } catch (Exception e) {
 129                                         throw new IllegalStateException("Cannot create entrypoint contents", e);
 130                                 }
 131                                 return null;
 132                         }
 133                 });
 134         }
 135
 136         protected Subject getSubject() {
 137                 return loginContext.getSubject();
 138         }
 139
 140         public <T> T doAs(PrivilegedAction<T> action) {
 141                 return Subject.doAs(getSubject(), action);
 142         }
 143
 144         @Override
 145         public boolean isAnonymous() {
 146                 return CurrentUser.isAnonymous(getSubject());
 147         }
 148
 149         @Override
 150         public synchronized void logout() {
 151                 if (loginContext == null)
 152                         throw new IllegalArgumentException("Login context should not be null");
 153                 try {
 154                         CurrentUser.logoutCmsSession(loginContext.getSubject());
 155                         loginContext.logout();
 156                         LoginContext anonymousLc = new LoginContext(NodeConstants.LOGIN_CONTEXT_ANONYMOUS);
 157                         anonymousLc.login();
 158                         authChange(anonymousLc);
 159                 } catch (LoginException e) {
 160                         log.error("Cannot logout", e);
 161                 }
 162         }
 163
 164         @Override
 165         public synchronized void authChange(LoginContext lc) {
 166                 if (lc == null)
 167                         throw new IllegalArgumentException("Login context cannot be null");
 168                 // logout previous login context
 169                 if (this.loginContext != null)
 170                         try {
 171                                 this.loginContext.logout();
 172                         } catch (LoginException e1) {
 173                                 log.warn("Could not log out: " + e1);
 174                         }
 175                 this.loginContext = lc;
 176                 doRefresh();
 177         }
 178
 179         @Override
 180         public void exception(final Throwable e) {
 181                 if (e instanceof SWTError) {
 182                         SWTError swtError = (SWTError) e;
 183                         if (swtError.code == SWT.ERROR_FUNCTION_DISPOSED)
 184                                 return;
 185                 }
 186                 display.syncExec(() -> {
 187 //                      CmsFeedback.show("Unexpected exception in CMS", e);
 188                         exception = e;
 189 //              log.error("Unexpected exception in CMS", e);
 190                         doRefresh();
 191                 });
 192         }
 193
 194         protected synchronized void doRefresh() {
 195                 if (ui != null)
 196                         Subject.doAs(getSubject(), new PrivilegedAction<Void>() {
 197                                 @Override
 198                                 public Void run() {
 199                                         if (exception != null) {
 200                                                 // TODO internationalise
 201                                                 CmsFeedback.show("Unexpected exception", exception);
 202                                                 exception = null;
 203                                                 // TODO report
 204                                         }
 205                                         cmsWebApp.getCmsApp().refreshUi(ui, state);
 206                                         return null;
 207                                 }
 208                         });
 209         }
 210
 211         /** Sets the state of the entry point and retrieve the related JCR node. */
 212         protected String setState(String newState) {
 213                 cmsWebApp.getCmsApp().setState(ui, newState);
 214                 state = newState;
 215                 return null;
 216         }
 217
 218         @Override
 219         public UxContext getUxContext() {
 220                 return uxContext;
 221         }
 222
 223         @Override
 224         public String getUid() {
 225                 return uid;
 226         }
 227
 228         @Override
 229         public void navigateTo(String state) {
 230                 exception = null;
 231                 String title = setState(state);
 232                 if (title != null)
 233                         doRefresh();
 234                 if (browserNavigation != null)
 235                         browserNavigation.pushState(state, title);
 236         }
 237
 238         public CmsImageManager getImageManager() {
 239                 return imageManager;
 240         }
 241
 242         @Override
 243         public void navigated(BrowserNavigationEvent event) {
 244                 setState(event.getState());
 245                 // doRefresh();
 246         }
 247
 248         @Override
 249         public void sendEvent(String topic, Map<String, Object> properties) {
 250                 if (properties == null)
 251                         properties = new HashMap<>();
 252                 if (properties.containsKey(CMS_VIEW_UID_PROPERTY) && !properties.get(CMS_VIEW_UID_PROPERTY).equals(uid))
 253                         throw new IllegalArgumentException("Property " + CMS_VIEW_UID_PROPERTY + " is set to another CMS view uid ("
 254                                         + properties.get(CMS_VIEW_UID_PROPERTY) + ") then " + uid);
 255                 properties.put(CMS_VIEW_UID_PROPERTY, uid);
 256                 eventAdmin.sendEvent(new Event(topic, properties));
 257         }
 258
 259         @Override
 260         public void stateChanged(String state, String title) {
 261                 browserNavigation.pushState(state, title);
 262         }
 263
 264         @Override
 265         public CmsSession getCmsSession() {
 266                 CmsSession cmsSession = CmsOsgiUtils.getCmsSession(cmsWebApp.getBundleContext(), getSubject());
 267                 return cmsSession;
 268         }
 269
 270         @Override
 271         public Object getData(String key) {
 272                 if (ui != null) {
 273                         return ui.getData(key);
 274                 } else {
 275                         throw new IllegalStateException("UI is not initialized");
 276                 }
 277         }
 278
 279         @Override
 280         public void setData(String key, Object value) {
 281                 if (ui != null) {
 282                         ui.setData(key, value);
 283                 } else {
 284                         throw new IllegalStateException("UI is not initialized");
 285                 }
 286         }
 287
 288         /*
 289          * EntryPoint IMPLEMENTATION
 290          */
 291
 292         @Override
 293         public int createUI() {
 294                 Display display = new Display();
 295                 Shell shell = createShell(display);
 296                 shell.setLayout(CmsSwtUtils.noSpaceGridLayout());
 297                 CmsSwtUtils.registerCmsView(shell, this);
 298                 createContents(shell);
 299                 shell.layout();
 300 //              if (shell.getMaximized()) {
 301 //                      shell.layout();
 302 //              } else {
 303 ////                    shell.pack();
 304 //              }
 305                 shell.open();
 306                 if (getApplicationContext().getLifeCycleFactory().getLifeCycle() instanceof RWTLifeCycle) {
 307                         eventLoop: while (!shell.isDisposed()) {
 308                                 try {
 309                                         if (!display.readAndDispatch()) {
 310                                                 display.sleep();
 311                                         }
 312                                 } catch (Throwable e) {
 313                                         if (e instanceof SWTError) {
 314                                                 SWTError swtError = (SWTError) e;
 315                                                 if (swtError.code == SWT.ERROR_FUNCTION_DISPOSED) {
 316                                                         log.error("Unexpected SWT error in event loop, ignoring it. " + e.getMessage());
 317                                                         continue eventLoop;
 318                                                 } else {
 319                                                         log.error("Unexpected SWT error in event loop, shutting down...", e);
 320                                                         break eventLoop;
 321                                                 }
 322                                         } else if (e instanceof ThreadDeath) {
 323                                                 throw (ThreadDeath) e;
 324                                         } else if (e instanceof Error) {
 325                                                 log.error("Unexpected error in event loop, shutting down...", e);
 326                                                 break eventLoop;
 327                                         } else {
 328                                                 log.error("Unexpected exception in event loop, ignoring it. " + e.getMessage());
 329                                                 continue eventLoop;
 330                                         }
 331                                 }
 332                         }
 333                         if (!display.isDisposed())
 334                                 display.dispose();
 335                 }
 336                 return 0;
 337         }
 338
 339         protected Shell createShell(Display display) {
 340                 Shell shell;
 341                 if (!multipleShells) {
 342                         shell = new Shell(display, SWT.NO_TRIM);
 343                         shell.setMaximized(true);
 344                 } else {
 345                         shell = new Shell(display, SWT.SHELL_TRIM);
 346                         shell.setSize(800, 600);
 347                 }
 348                 return shell;
 349         }
 350
 351         public void setEventAdmin(EventAdmin eventAdmin) {
 352                 this.eventAdmin = eventAdmin;
 353         }
 354
 355 }