rcp/CmsE4Application.java

   1 package org.argeo.cms.e4.rcp;
   2
   3 import java.security.PrivilegedExceptionAction;
   4 import java.util.UUID;
   5 import java.util.concurrent.Callable;
   6
   7 import javax.security.auth.Subject;
   8 import javax.security.auth.login.LoginContext;
   9 import javax.security.auth.login.LoginException;
  10
  11 import org.argeo.api.cms.CmsAuth;
  12 import org.argeo.api.cms.ux.CmsImageManager;
  13 import org.argeo.api.cms.ux.CmsView;
  14 import org.argeo.api.cms.ux.UxContext;
  15 import org.argeo.cms.auth.CurrentUser;
  16 import org.argeo.cms.swt.CmsException;
  17 import org.argeo.cms.swt.CmsSwtUtils;
  18 import org.argeo.cms.swt.SimpleSwtUxContext;
  19 import org.argeo.cms.swt.auth.CmsLoginShell;
  20 import org.eclipse.core.runtime.IConfigurationElement;
  21 import org.eclipse.core.runtime.IExtension;
  22 import org.eclipse.core.runtime.Platform;
  23 import org.eclipse.equinox.app.IApplication;
  24 import org.eclipse.equinox.app.IApplicationContext;
  25 import org.eclipse.swt.widgets.Display;
  26
  27 public class CmsE4Application implements IApplication, CmsView {
  28         private LoginContext loginContext;
  29         private IApplication e4Application;
  30         private UxContext uxContext;
  31         private String uid;
  32
  33         @Override
  34         public Object start(IApplicationContext context) throws Exception {
  35                 // TODO wait for CMS to be ready
  36                 Thread.sleep(5000);
  37
  38                 uid = UUID.randomUUID().toString();
  39                 Subject subject = new Subject();
  40                 Display display = createDisplay();
  41                 CmsLoginShell loginShell = new CmsLoginShell(this, null);
  42                 // TODO customize CmsLoginShell to be smaller and centered
  43                 loginShell.setSubject(subject);
  44                 try {
  45                         // try pre-auth
  46                         loginContext = new LoginContext(CmsAuth.LOGIN_CONTEXT_SINGLE_USER, subject, loginShell);
  47                         loginContext.login();
  48                 } catch (LoginException e) {
  49                         e.printStackTrace();
  50                         loginShell.createUi();
  51                         loginShell.open();
  52
  53                         while (!loginShell.getShell().isDisposed()) {
  54                                 if (!display.readAndDispatch())
  55                                         display.sleep();
  56                         }
  57                 }
  58                 if (CurrentUser.getUsername(getSubject()) == null)
  59                         throw new IllegalStateException("Cannot log in");
  60
  61                 // try {
  62                 // CallbackHandler callbackHandler = new DefaultLoginDialog(
  63                 // display.getActiveShell());
  64                 // loginContext = new LoginContext(
  65                 // NodeConstants.LOGIN_CONTEXT_SINGLE_USER, subject,
  66                 // callbackHandler);
  67                 // } catch (LoginException e1) {
  68                 // throw new CmsException("Cannot initialize login context", e1);
  69                 // }
  70                 //
  71                 // // login
  72                 // try {
  73                 // loginContext.login();
  74                 // subject = loginContext.getSubject();
  75                 // } catch (LoginException e) {
  76                 // e.printStackTrace();
  77                 // display.dispose();
  78                 // try {
  79                 // Thread.sleep(2000);
  80                 // } catch (InterruptedException e1) {
  81                 // // silent
  82                 // }
  83                 // return null;
  84                 // }
  85
  86                 uxContext = new SimpleSwtUxContext();
  87                 // UiContext.setData(CmsView.KEY, this);
  88                 CmsSwtUtils.registerCmsView(loginShell.getShell(), this);
  89                 e4Application = getApplication(null);
  90                 Object res = Subject.doAs(subject, new PrivilegedExceptionAction<Object>() {
  91
  92                         @Override
  93                         public Object run() throws Exception {
  94                                 return e4Application.start(context);
  95                         }
  96
  97                 });
  98                 return res;
  99         }
 100
 101         @Override
 102         public void stop() {
 103                 if (e4Application != null)
 104                         e4Application.stop();
 105         }
 106
 107         static IApplication getApplication(String[] args) {
 108                 IExtension extension = Platform.getExtensionRegistry().getExtension(Platform.PI_RUNTIME,
 109                                 Platform.PT_APPLICATIONS, "org.eclipse.e4.ui.workbench.swt.E4Application");
 110                 try {
 111                         IConfigurationElement[] elements = extension.getConfigurationElements();
 112                         if (elements.length > 0) {
 113                                 IConfigurationElement[] runs = elements[0].getChildren("run");
 114                                 if (runs.length > 0) {
 115                                         Object runnable;
 116                                         runnable = runs[0].createExecutableExtension("class");
 117                                         if (runnable instanceof IApplication)
 118                                                 return (IApplication) runnable;
 119                                 }
 120                         }
 121                 } catch (Exception e) {
 122                         throw new IllegalStateException("Cannot find e4 application", e);
 123                 }
 124                 throw new IllegalStateException("Cannot find e4 application");
 125         }
 126
 127         public static Display createDisplay() {
 128                 Display.setAppName("Argeo CMS RCP");
 129
 130                 // create the display
 131                 Display newDisplay = Display.getCurrent();
 132                 if (newDisplay == null) {
 133                         newDisplay = new Display();
 134                 }
 135                 // Set the priority higher than normal so as to be higher
 136                 // than the JobManager.
 137                 Thread.currentThread().setPriority(Math.min(Thread.MAX_PRIORITY, Thread.NORM_PRIORITY + 1));
 138                 return newDisplay;
 139         }
 140
 141         //
 142         // CMS VIEW
 143         //
 144
 145         @Override
 146         public UxContext getUxContext() {
 147                 return uxContext;
 148         }
 149
 150         @Override
 151         public void navigateTo(String state) {
 152                 // TODO Auto-generated method stub
 153
 154         }
 155
 156         @Override
 157         public void authChange(LoginContext loginContext) {
 158                 if (loginContext == null)
 159                         throw new CmsException("Login context cannot be null");
 160                 // logout previous login context
 161                 // if (this.loginContext != null)
 162                 // try {
 163                 // this.loginContext.logout();
 164                 // } catch (LoginException e1) {
 165                 // System.err.println("Could not log out: " + e1);
 166                 // }
 167                 this.loginContext = loginContext;
 168         }
 169
 170         @Override
 171         public void logout() {
 172                 if (loginContext == null)
 173                         throw new CmsException("Login context should not bet null");
 174                 try {
 175                         CurrentUser.logoutCmsSession(loginContext.getSubject());
 176                         loginContext.logout();
 177                 } catch (LoginException e) {
 178                         throw new CmsException("Cannot log out", e);
 179                 }
 180         }
 181
 182         @Override
 183         public void exception(Throwable e) {
 184                 // TODO Auto-generated method stub
 185
 186         }
 187
 188         @Override
 189         public CmsImageManager getImageManager() {
 190                 // TODO Auto-generated method stub
 191                 return null;
 192         }
 193
 194         protected Subject getSubject() {
 195                 return loginContext.getSubject();
 196         }
 197
 198         @Override
 199         public boolean isAnonymous() {
 200                 return CurrentUser.isAnonymous(getSubject());
 201         }
 202
 203         @Override
 204         public String getUid() {
 205                 return uid;
 206         }
 207
 208         @Override
 209         public <T> T doAs(Callable<T> action) {
 210                 throw new UnsupportedOperationException();
 211         }
 212
 213 }