1 files changed, 152 insertions, 0 deletions
diff --git a/src/net/java/sip/communicator/service/protocol/media/AbstractOperationSetBasicTelephony.java b/src/net/java/sip/communicator/service/protocol/media/AbstractOperationSetBasicTelephony.java
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+/*
+ * SIP Communicator, the OpenSource Java VoIP and Instant Messaging client.
+ *
+ * Distributable under LGPL license.
+ * See terms of license at gnu.org.
+ */
+package net.java.sip.communicator.service.protocol.media;
+
+import java.util.*;
+
+import net.java.sip.communicator.service.protocol.*;
+import net.java.sip.communicator.service.protocol.event.*;
+import net.java.sip.communicator.util.*;
+
+/**
+ * Represents a default implementation of <tt>OperationSetBasicTelephony</tt> in
+ * order to make it easier for implementers to provide complete solutions while
+ * focusing on implementation-specific details.
+ *
+ * @param <T> the implementation specific provider class like for example
+ * <tt>ProtocolProviderServiceSipImpl</tt>.
+ *
+ * @author Lubomir Marinov
+ * @author Emil Ivov
+ * @author Dmitri Melnikov
+ */
+public abstract class AbstractOperationSetBasicTelephony
+                                        <T extends ProtocolProviderService>
+    implements OperationSetBasicTelephony<T>
+{
+    /**
+     * The <tt>Logger</tt> used by the
+     * <tt>AbstractOperationSetBasicTelephony</tt> class and its instances for
+     * logging output.
+     */
+    private static final Logger logger
+        = Logger.getLogger(AbstractOperationSetBasicTelephony.class);
+
+    /**
+     * A list of listeners registered for call events.
+     */
+    private final List<CallListener> callListeners = new Vector<CallListener>();
+
+    /**
+     * Registers <tt>listener</tt> with this provider so that it
+     * could be notified when incoming calls are received.
+     *
+     * @param listener the listener to register with this provider.
+     */
+    public void addCallListener(CallListener listener)
+    {
+        synchronized(callListeners)
+        {
+            if (!callListeners.contains(listener))
+                callListeners.add(listener);
+        }
+    }
+
+    /**
+     * Creates and dispatches a <tt>CallEvent</tt> notifying registered
+     * listeners that an event with id <tt>eventID</tt> has occurred on
+     * <tt>sourceCall</tt>.
+     *
+     * @param eventID the ID of the event to dispatch
+     * @param sourceCall the call on which the event has occurred.
+     */
+    public void fireCallEvent(int eventID, Call sourceCall)
+    {
+        CallEvent cEvent = new CallEvent(sourceCall, eventID);
+        List<CallListener> listeners;
+
+        synchronized (callListeners)
+        {
+            listeners = new ArrayList<CallListener>(callListeners);
+        }
+
+        if (logger.isDebugEnabled())
+            logger.debug("Dispatching a CallEvent to " + listeners.size()
+            + " listeners. event is: " + cEvent);
+
+        for (CallListener listener : listeners)
+        {
+            switch (eventID)
+            {
+            case CallEvent.CALL_INITIATED:
+                listener.outgoingCallCreated(cEvent);
+                break;
+            case CallEvent.CALL_RECEIVED:
+                listener.incomingCallReceived(cEvent);
+                break;
+            case CallEvent.CALL_ENDED:
+                listener.callEnded(cEvent);
+                break;
+            }
+        }
+    }
+
+    /**
+     * Removes the <tt>listener</tt> from the list of call listeners.
+     *
+     * @param listener the listener to unregister.
+     */
+    public void removeCallListener(CallListener listener)
+    {
+        synchronized(callListeners)
+        {
+            callListeners.remove(listener);
+        }
+    }
+
+    /**
+     * Sets the mute state of the <tt>Call</tt>.
+     * <p>
+     * Muting audio streams sent from the call is implementation specific
+     * and one of the possible approaches to it is sending silence.
+     * </p>
+     *
+     * @param call the <tt>Call</tt> whose mute state is to be set
+     * @param mute <tt>true</tt> to mute the call streams being sent to
+     * <tt>peers</tt>; otherwise, <tt>false</tt>
+     */
+    public void setMute(Call call, boolean mute)
+    {
+        /*
+         * While throwing UnsupportedOperationException may be a possible
+         * approach, putOnHold/putOffHold just do nothing when not supported so
+         * this implementation takes inspiration from them.
+         */
+    }
+
+    /**
+     * Starts the recording of the <tt>Call</tt>.
+     *
+     * @param call the <tt>Call</tt> to start recording
+     * @param callFilename call filename, when <tt>null</tt> a default filename
+     *            is used
+     */
+    public void startRecording(Call call, String callFilename)
+    {
+        ((MediaAwareCall<?, ?, ?>) call).startRecording(callFilename);
+    }
+
+    /**
+     * Stops the recording of the <tt>Call</tt>.
+     *
+     * @param call the <tt>Call</tt> to stop recording
+     */
+    public void stopRecording(Call call)
+    {
+        ((MediaAwareCall<?, ?, ?>) call).stopRecording();
+    }
+}