rap/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.argeo.api.cms.CmsApp;
  16 import org.argeo.api.cms.CmsAuth;
  17 import org.argeo.api.cms.CmsImageManager;
  18 import org.argeo.api.cms.CmsLog;
  19 import org.argeo.api.cms.CmsSession;
  20 import org.argeo.api.cms.CmsUi;
  21 import org.argeo.api.cms.CmsView;
  22 import org.argeo.api.cms.UxContext;
  23 import org.argeo.cms.LocaleUtils;
  24 import org.argeo.cms.auth.CurrentUser;
  25 import org.argeo.cms.auth.RemoteAuthCallbackHandler;
  26 import org.argeo.cms.servlet.ServletHttpRequest;
  27 import org.argeo.cms.servlet.ServletHttpResponse;
  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 CmsLog log = CmsLog.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(CmsAuth.LOGIN_CONTEXT_USER,
  87                                         new RemoteAuthCallbackHandler(new ServletHttpRequest(UiContext.getHttpRequest()),
  88                                                         new ServletHttpResponse(UiContext.getHttpResponse())));
  89                         lc.login();
  90                 } catch (LoginException e) {
  91                         try {
  92                                 lc = new LoginContext(CmsAuth.LOGIN_CONTEXT_ANONYMOUS);
  93                                 lc.login();
  94                         } catch (LoginException e1) {
  95                                 throw new IllegalStateException("Cannot log in as anonymous", e1);
  96                         }
  97                 }
  98                 authChange(lc);
  99
 100                 // jsExecutor = RWT.getClient().getService(JavaScriptExecutor.class);
 101                 browserNavigation = RWT.getClient().getService(BrowserNavigation.class);
 102                 if (browserNavigation != null)
 103                         browserNavigation.addBrowserNavigationListener(this);
 104         }
 105
 106         protected void createContents(Composite parent) {
 107                 Subject.doAs(loginContext.getSubject(), new PrivilegedAction<Void>() {
 108                         @Override
 109                         public Void run() {
 110                                 try {
 111                                         uxContext = new SimpleSwtUxContext();
 112                                         imageManager = new DefaultImageManager();
 113                                         CmsSession cmsSession = getCmsSession();
 114                                         if (cmsSession != null) {
 115                                                 UiContext.setLocale(cmsSession.getLocale());
 116                                                 LocaleUtils.setThreadLocale(cmsSession.getLocale());
 117                                         } else {
 118                                                 Locale rwtLocale = RWT.getUISession().getLocale();
 119                                                 LocaleUtils.setThreadLocale(rwtLocale);
 120                                         }
 121                                         parent.setData(CmsApp.UI_NAME_PROPERTY, uiName);
 122                                         display = parent.getDisplay();
 123                                         ui = cmsWebApp.getCmsApp().initUi(parent);
 124                                         if (ui instanceof Composite)
 125                                                 ((Composite) ui).setLayoutData(CmsSwtUtils.fillAll());
 126                                         // we need ui to be set before refresh so that CmsView can store UI context data
 127                                         // in it.
 128                                         cmsWebApp.getCmsApp().refreshUi(ui, null);
 129                                 } catch (Exception e) {
 130                                         throw new IllegalStateException("Cannot create entrypoint contents", e);
 131                                 }
 132                                 return null;
 133                         }
 134                 });
 135         }
 136
 137         protected Subject getSubject() {
 138                 return loginContext.getSubject();
 139         }
 140
 141         public <T> T doAs(PrivilegedAction<T> action) {
 142                 return Subject.doAs(getSubject(), action);
 143         }
 144
 145         @Override
 146         public boolean isAnonymous() {
 147                 return CurrentUser.isAnonymous(getSubject());
 148         }
 149
 150         @Override
 151         public synchronized void logout() {
 152                 if (loginContext == null)
 153                         throw new IllegalArgumentException("Login context should not be null");
 154                 try {
 155                         CurrentUser.logoutCmsSession(loginContext.getSubject());
 156                         loginContext.logout();
 157                         LoginContext anonymousLc = new LoginContext(CmsAuth.LOGIN_CONTEXT_ANONYMOUS);
 158                         anonymousLc.login();
 159                         authChange(anonymousLc);
 160                 } catch (LoginException e) {
 161                         log.error("Cannot logout", e);
 162                 }
 163         }
 164
 165         @Override
 166         public synchronized void authChange(LoginContext lc) {
 167                 if (lc == null)
 168                         throw new IllegalArgumentException("Login context cannot be null");
 169                 // logout previous login context
 170                 if (this.loginContext != null)
 171                         try {
 172                                 this.loginContext.logout();
 173                         } catch (LoginException e1) {
 174                                 log.warn("Could not log out: " + e1);
 175                         }
 176                 this.loginContext = lc;
 177                 doRefresh();
 178         }
 179
 180         @Override
 181         public void exception(final Throwable e) {
 182                 if (e instanceof SWTError) {
 183                         SWTError swtError = (SWTError) e;
 184                         if (swtError.code == SWT.ERROR_FUNCTION_DISPOSED)
 185                                 return;
 186                 }
 187                 display.syncExec(() -> {
 188 //                      CmsFeedback.show("Unexpected exception in CMS", e);
 189                         exception = e;
 190 //              log.error("Unexpected exception in CMS", e);
 191                         doRefresh();
 192                 });
 193         }
 194
 195         protected synchronized void doRefresh() {
 196                 if (ui != null)
 197                         Subject.doAs(getSubject(), new PrivilegedAction<Void>() {
 198                                 @Override
 199                                 public Void run() {
 200                                         if (exception != null) {
 201                                                 // TODO internationalise
 202                                                 CmsFeedback.show("Unexpected exception", exception);
 203                                                 exception = null;
 204                                                 // TODO report
 205                                         }
 206                                         cmsWebApp.getCmsApp().refreshUi(ui, state);
 207                                         return null;
 208                                 }
 209                         });
 210         }
 211
 212         /** Sets the state of the entry point and retrieve the related JCR node. */
 213         protected String setState(String newState) {
 214                 cmsWebApp.getCmsApp().setState(ui, newState);
 215                 state = newState;
 216                 return null;
 217         }
 218
 219         @Override
 220         public UxContext getUxContext() {
 221                 return uxContext;
 222         }
 223
 224         @Override
 225         public String getUid() {
 226                 return uid;
 227         }
 228
 229         @Override
 230         public void navigateTo(String state) {
 231                 exception = null;
 232                 String title = setState(state);
 233                 if (title != null)
 234                         doRefresh();
 235                 if (browserNavigation != null)
 236                         browserNavigation.pushState(state, title);
 237         }
 238
 239         public CmsImageManager getImageManager() {
 240                 return imageManager;
 241         }
 242
 243         @Override
 244         public void navigated(BrowserNavigationEvent event) {
 245                 setState(event.getState());
 246                 // doRefresh();
 247         }
 248
 249         @Override
 250         public void sendEvent(String topic, Map<String, Object> properties) {
 251                 if (properties == null)
 252                         properties = new HashMap<>();
 253                 if (properties.containsKey(CMS_VIEW_UID_PROPERTY) && !properties.get(CMS_VIEW_UID_PROPERTY).equals(uid))
 254                         throw new IllegalArgumentException("Property " + CMS_VIEW_UID_PROPERTY + " is set to another CMS view uid ("
 255                                         + properties.get(CMS_VIEW_UID_PROPERTY) + ") then " + uid);
 256                 properties.put(CMS_VIEW_UID_PROPERTY, uid);
 257                 eventAdmin.sendEvent(new Event(topic, properties));
 258         }
 259
 260         @Override
 261         public void stateChanged(String state, String title) {
 262                 browserNavigation.pushState(state, title);
 263         }
 264
 265         @Override
 266         public CmsSession getCmsSession() {
 267                 CmsSession cmsSession = cmsWebApp.getCmsApp().getCmsContext().getCmsSession(getSubject());
 268                 return cmsSession;
 269         }
 270
 271         @Override
 272         public Object getData(String key) {
 273                 if (ui != null) {
 274                         return ui.getData(key);
 275                 } else {
 276                         throw new IllegalStateException("UI is not initialized");
 277                 }
 278         }
 279
 280         @Override
 281         public void setData(String key, Object value) {
 282                 if (ui != null) {
 283                         ui.setData(key, value);
 284                 } else {
 285                         throw new IllegalStateException("UI is not initialized");
 286                 }
 287         }
 288
 289         /*
 290          * EntryPoint IMPLEMENTATION
 291          */
 292
 293         @Override
 294         public int createUI() {
 295                 Display display = new Display();
 296                 Shell shell = createShell(display);
 297                 shell.setLayout(CmsSwtUtils.noSpaceGridLayout());
 298                 CmsSwtUtils.registerCmsView(shell, this);
 299                 createContents(shell);
 300                 shell.layout();
 301 //              if (shell.getMaximized()) {
 302 //                      shell.layout();
 303 //              } else {
 304 ////                    shell.pack();
 305 //              }
 306                 shell.open();
 307                 if (getApplicationContext().getLifeCycleFactory().getLifeCycle() instanceof RWTLifeCycle) {
 308                         eventLoop: while (!shell.isDisposed()) {
 309                                 try {
 310                                         if (!display.readAndDispatch()) {
 311                                                 display.sleep();
 312                                         }
 313                                 } catch (Throwable e) {
 314                                         if (e instanceof SWTError) {
 315                                                 SWTError swtError = (SWTError) e;
 316                                                 if (swtError.code == SWT.ERROR_FUNCTION_DISPOSED) {
 317                                                         log.error("Unexpected SWT error in event loop, ignoring it. " + e.getMessage());
 318                                                         continue eventLoop;
 319                                                 } else {
 320                                                         log.error("Unexpected SWT error in event loop, shutting down...", e);
 321                                                         break eventLoop;
 322                                                 }
 323                                         } else if (e instanceof ThreadDeath) {
 324                                                 throw (ThreadDeath) e;
 325                                         } else if (e instanceof Error) {
 326                                                 log.error("Unexpected error in event loop, shutting down...", e);
 327                                                 break eventLoop;
 328                                         } else {
 329                                                 log.error("Unexpected exception in event loop, ignoring it. " + e.getMessage());
 330                                                 continue eventLoop;
 331                                         }
 332                                 }
 333                         }
 334                         if (!display.isDisposed())
 335                                 display.dispose();
 336                 }
 337                 return 0;
 338         }
 339
 340         protected Shell createShell(Display display) {
 341                 Shell shell;
 342                 if (!multipleShells) {
 343                         shell = new Shell(display, SWT.NO_TRIM);
 344                         shell.setMaximized(true);
 345                 } else {
 346                         shell = new Shell(display, SWT.SHELL_TRIM);
 347                         shell.setSize(800, 600);
 348                 }
 349                 return shell;
 350         }
 351
 352         public void setEventAdmin(EventAdmin eventAdmin) {
 353                 this.eventAdmin = eventAdmin;
 354         }
 355
 356 }