Clean and refactor cms.ui.workbench bundle

[lgpl/argeo-commons.git] / org.argeo.cms.ui.workbench / src / org / argeo / cms / ui / workbench / internal / useradmin / UserAdminWrapper.java

diff --git a/org.argeo.cms.ui.workbench/src/org/argeo/cms/ui/workbench/internal/useradmin/UserAdminWrapper.java b/org.argeo.cms.ui.workbench/src/org/argeo/cms/ui/workbench/internal/useradmin/UserAdminWrapper.java
new file mode 100644 (file)
index 0000000..2f59e86
--- /dev/null
+++ b/org.argeo.cms.ui.workbench/src/org/argeo/cms/ui/workbench/internal/useradmin/UserAdminWrapper.java
@@ -0,0 +1,77 @@
+package org.argeo.cms.ui.workbench.internal.useradmin;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import javax.transaction.Status;
+import javax.transaction.UserTransaction;
+
+import org.argeo.cms.CmsException;
+import org.osgi.service.useradmin.UserAdminEvent;
+import org.osgi.service.useradmin.UserAdminListener;
+
+/** Centralise interaction with the UserAdmin in this bundle */
+public class UserAdminWrapper extends
+               org.argeo.cms.util.useradmin.UserAdminWrapper {
+
+       // First effort to simplify UX while managing users and groups
+       public final static boolean COMMIT_ON_SAVE = true;
+
+       // Registered listeners
+       List<UserAdminListener> listeners = new ArrayList<UserAdminListener>();
+
+       /**
+        * Starts a transaction if necessary. Should always been called together
+        * with {@link UserAdminWrapper#commitOrNotifyTransactionStateChange()} once
+        * the security model changes have been performed.
+        */
+       public UserTransaction beginTransactionIfNeeded() {
+               try {
+                       UserTransaction userTransaction = getUserTransaction();
+                       if (userTransaction.getStatus() == Status.STATUS_NO_TRANSACTION) {
+                               userTransaction.begin();
+                               // UiAdminUtils.notifyTransactionStateChange(userTransaction);
+                       }
+                       return userTransaction;
+               } catch (Exception e) {
+                       throw new CmsException("Unable to begin transaction", e);
+               }
+       }
+
+       /**
+        * Depending on the current application configuration, it will either commit
+        * the current transaction or throw a notification that the transaction
+        * state has changed (In the later case, it must be called from the UI
+        * thread).
+        */
+       public void commitOrNotifyTransactionStateChange() {
+               try {
+                       UserTransaction userTransaction = getUserTransaction();
+                       if (userTransaction.getStatus() == Status.STATUS_NO_TRANSACTION)
+                               return;
+
+                       if (UserAdminWrapper.COMMIT_ON_SAVE)
+                               userTransaction.commit();
+                       else
+                               UiAdminUtils.notifyTransactionStateChange(userTransaction);
+               } catch (Exception e) {
+                       throw new CmsException("Unable to clean transaction", e);
+               }
+       }
+
+       // TODO implement safer mechanism
+       public void addListener(UserAdminListener userAdminListener) {
+               if (!listeners.contains(userAdminListener))
+                       listeners.add(userAdminListener);
+       }
+
+       public void removeListener(UserAdminListener userAdminListener) {
+               if (listeners.contains(userAdminListener))
+                       listeners.remove(userAdminListener);
+       }
+
+       public void notifyListeners(UserAdminEvent event) {
+               for (UserAdminListener listener : listeners)
+                       listener.roleChanged(event);
+       }
+}
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