org.argeo.cms.ux/src/org/argeo/cms/ux/AbstractCmsEditable.java

   1 package org.argeo.cms.ux;
   2
   3 import java.util.IdentityHashMap;
   4
   5 import org.argeo.api.cms.ux.CmsEditable;
   6 import org.argeo.api.cms.ux.CmsEditionEvent;
   7 import org.argeo.api.cms.ux.CmsEditionListener;
   8
   9 /**
  10  * Base class for implementing {@link CmsEditable}, mostly managing
  11  * {@link CmsEditionListener}s.
  12  */
  13 public abstract class AbstractCmsEditable implements CmsEditable {
  14         private IdentityHashMap<CmsEditionListener, Object> listeners = new IdentityHashMap<>();
  15
  16         /** Notifies listeners of a {@link CmsEditionEvent}. */
  17         protected void notifyListeners(CmsEditionEvent e) {
  18                 if (CmsEditionEvent.START_EDITING == e.getType()) {
  19                         for (CmsEditionListener listener : listeners.keySet())
  20                                 listener.editionStarted(e);
  21                 } else if (CmsEditionEvent.STOP_EDITING == e.getType()) {
  22                         for (CmsEditionListener listener : listeners.keySet())
  23                                 listener.editionStopped(e);
  24                 } else {
  25                         throw new IllegalArgumentException("Unkown edition event type " + e.getType());
  26                 }
  27         }
  28
  29         @Override
  30         public void addCmsEditionListener(CmsEditionListener listener) {
  31                 listeners.put(listener, new Object());
  32         }
  33
  34         @Override
  35         public void removeCmsEditionListener(CmsEditionListener listener) {
  36                 listeners.remove(listener, new Object());
  37         }
  38
  39 }