swt/org.argeo.cms.swt/src/org/argeo/cms/swt/AbstractSwtCmsView.java

   1 package org.argeo.cms.swt;
   2
   3 import java.security.PrivilegedAction;
   4 import java.util.HashMap;
   5 import java.util.Map;
   6 import java.util.concurrent.CompletableFuture;
   7 import java.util.concurrent.ExecutionException;
   8
   9 import javax.security.auth.Subject;
  10 import javax.security.auth.login.LoginContext;
  11
  12 import org.argeo.api.cms.CmsEventBus;
  13 import org.argeo.api.cms.ux.CmsImageManager;
  14 import org.argeo.api.cms.ux.CmsUi;
  15 import org.argeo.api.cms.ux.CmsView;
  16 import org.argeo.api.cms.ux.UxContext;
  17 import org.argeo.cms.auth.CurrentUser;
  18 import org.eclipse.swt.widgets.Display;
  19
  20 public abstract class AbstractSwtCmsView implements CmsView {
  21         protected final String uiName;
  22
  23         protected LoginContext loginContext;
  24         protected String state;
  25         protected Throwable exception;
  26         protected UxContext uxContext;
  27         protected CmsImageManager imageManager;
  28
  29         protected Display display;
  30         protected CmsUi ui;
  31
  32         protected String uid;
  33
  34         public AbstractSwtCmsView(String uiName) {
  35                 this.uiName = uiName;
  36         }
  37
  38         public abstract CmsEventBus getCmsEventBus();
  39
  40         @Override
  41         public void sendEvent(String topic, Map<String, Object> properties) {
  42                 if (properties == null)
  43                         properties = new HashMap<>();
  44                 if (properties.containsKey(CMS_VIEW_UID_PROPERTY) && !properties.get(CMS_VIEW_UID_PROPERTY).equals(uid))
  45                         throw new IllegalArgumentException("Property " + CMS_VIEW_UID_PROPERTY + " is set to another CMS view uid ("
  46                                         + properties.get(CMS_VIEW_UID_PROPERTY) + ") then " + uid);
  47                 properties.put(CMS_VIEW_UID_PROPERTY, uid);
  48                 getCmsEventBus().sendEvent(topic, properties);
  49         }
  50
  51         public <T> T doAs(PrivilegedAction<T> action) {
  52                 try {
  53                         CompletableFuture<T> result = new CompletableFuture<>();
  54                         Runnable toDo = () -> {
  55                                 T res = Subject.doAs(getSubject(), action);
  56                                 result.complete(res);
  57                         };
  58                         if (Thread.currentThread() == display.getThread())
  59                                 toDo.run();
  60                         else
  61                                 display.syncExec(toDo);
  62                         return result.get();
  63                 } catch (InterruptedException | ExecutionException e) {
  64                         throw new IllegalStateException("Cannot execute action ins CMS view " + uid, e);
  65                 }
  66         }
  67
  68         @Override
  69         public UxContext getUxContext() {
  70                 return uxContext;
  71         }
  72
  73         @Override
  74         public String getUid() {
  75                 return uid;
  76         }
  77
  78         @Override
  79         public CmsImageManager<?, ?> getImageManager() {
  80                 return imageManager;
  81         }
  82
  83         @Override
  84         public boolean isAnonymous() {
  85                 return CurrentUser.isAnonymous(getSubject());
  86         }
  87
  88         protected Subject getSubject() {
  89                 return loginContext.getSubject();
  90         }
  91
  92         @Override
  93         public Object getData(String key) {
  94                 if (ui != null) {
  95                         return ui.getData(key);
  96                 } else {
  97                         throw new IllegalStateException("UI is not initialized");
  98                 }
  99         }
 100
 101         @Override
 102         public void setData(String key, Object value) {
 103                 if (ui != null) {
 104                         ui.setData(key, value);
 105                 } else {
 106                         throw new IllegalStateException("UI is not initialized");
 107                 }
 108         }
 109
 110 }