content: /*
   * Copyright (C) 2014 Sony Mobile Communications Inc.
   *
   * Licensed under the Apache License, Version 2.0 (the "License"); you may not
   * use this file except in compliance with the License. You may obtain a copy of
   * the License at
   *
   * http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
   * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
   * License for the specific language governing permissions and limitations under
   * the License.
   */
  
  package com.gsma.rcs.service.broadcaster;
  
  import com.gsma.rcs.utils.logger.Logger;
  import com.gsma.services.rcs.capability.Capabilities;
  import com.gsma.services.rcs.capability.ICapabilitiesListener;
  import com.gsma.services.rcs.contact.ContactId;
  
  import android.os.RemoteCallbackList;
  import android.os.RemoteException;
  
  import java.util.HashMap;
  
  /**
   * CapabilitiesBroadcaster maintains the registering and unregistering of ICapabilitiesListener and
   * also performs broadcast events on these listeners upon the trigger of corresponding callbacks.
   */
  public class CapabilitiesBroadcaster {
  
      private RemoteCallbackList<ICapabilitiesListener> mCapabilitiesListeners = new RemoteCallbackList<>();
  
      private HashMap<ContactId, RemoteCallbackList<ICapabilitiesListener>> mCapalitiesListenersPerContact = new HashMap<>();
  
      private final Logger logger = Logger.getLogger(getClass().getName());
  
      public CapabilitiesBroadcaster() {
      }
  
      private void broadcastCapabilitiesReceivedForAllContacts(ContactId contact,
              Capabilities contactCapabilities) {
          final int N = mCapabilitiesListeners.beginBroadcast();
          for (int i = 0; i < N; i++) {
              try {
                  mCapabilitiesListeners.getBroadcastItem(i).onCapabilitiesReceived(contact,
                          contactCapabilities);
              } catch (RemoteException e) {
                  if (logger.isActivated()) {
                      logger.error("Can't notify listener", e);
                  }
              }
          }
          mCapabilitiesListeners.finishBroadcast();
      }
  
      private void broadcastCapabilitiesReceivedOnPerContact(ContactId contact,
              Capabilities contactCapabilities) {
          RemoteCallbackList<ICapabilitiesListener> capabilitiesListeners = mCapalitiesListenersPerContact
                  .get(contact);
          if (capabilitiesListeners == null) {
              return;
          }
          final int N = capabilitiesListeners.beginBroadcast();
          for (int i = 0; i < N; i++) {
              try {
                  capabilitiesListeners.getBroadcastItem(i).onCapabilitiesReceived(contact,
                          contactCapabilities);
              } catch (RemoteException e) {
                  if (logger.isActivated()) {
                      logger.error("Can't notify listener", e);
                  }
              }
          }
          capabilitiesListeners.finishBroadcast();
      }
  
      public void addCapabilitiesListener(ICapabilitiesListener listener) {
          mCapabilitiesListeners.register(listener);
      }
  
      public void removeCapabilitiesListener(ICapabilitiesListener listener) {
          mCapabilitiesListeners.unregister(listener);
      }
  
      public void addContactCapabilitiesListener(ContactId contact, ICapabilitiesListener listener) {
          RemoteCallbackList<ICapabilitiesListener> capabilitiesListeners = mCapalitiesListenersPerContact
                  .get(contact);
          if (capabilitiesListeners == null) {
              capabilitiesListeners = new RemoteCallbackList<>();
              mCapalitiesListenersPerContact.put(contact, capabilitiesListeners);
          }
          capabilitiesListeners.register(listener);
      }
  
      public void removeContactCapabilitiesListener(ContactId contact, ICapabilitiesListener listener) {
          RemoteCallbackList<ICapabilitiesListener> listeners = mCapalitiesListenersPerContact
                  .get(contact);
          if (listeners != null) {
              listeners.unregister(listener);
          }
      }
  
      public void broadcastCapabilitiesReceived(ContactId contact, Capabilities contactCapabilities) {
          // Notify capabilities listeners
          broadcastCapabilitiesReceivedForAllContacts(contact, contactCapabilities);
          // Notify capabilities listeners for a given contact
          broadcastCapabilitiesReceivedOnPerContact(contact, contactCapabilities);
      }
  }
  