Renaming Telecomm to Telecom.

- Changing package from android.telecomm to android.telecom
- Changing package from com.android.telecomm to
com.android.server.telecomm.
- Renaming TelecommManager to TelecomManager.

Bug: 17364651
Change-Id: Ib7b20ba6348948afb391450b4eef8919261f3272
diff --git a/src/com/android/server/telecom/CallsManager.java b/src/com/android/server/telecom/CallsManager.java
new file mode 100644
index 0000000..d0aa49f
--- /dev/null
+++ b/src/com/android/server/telecom/CallsManager.java
@@ -0,0 +1,871 @@
+/*
+ * Copyright (C) 2013 The Android Open Source Project
+ *
+ * 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.android.server.telecom;
+
+import android.net.Uri;
+import android.os.Bundle;
+import android.telecom.AudioState;
+import android.telecom.CallState;
+import android.telecom.GatewayInfo;
+import android.telecom.ParcelableConference;
+import android.telecom.PhoneAccountHandle;
+import android.telephony.DisconnectCause;
+import android.telephony.TelephonyManager;
+
+import com.google.common.collect.ImmutableCollection;
+import com.google.common.collect.ImmutableList;
+
+import java.util.Collections;
+import java.util.List;
+import java.util.Set;
+import java.util.concurrent.ConcurrentHashMap;
+
+/**
+ * Singleton.
+ *
+ * NOTE: by design most APIs are package private, use the relevant adapter/s to allow
+ * access from other packages specifically refraining from passing the CallsManager instance
+ * beyond the com.android.server.telecom package boundary.
+ */
+public final class CallsManager extends Call.ListenerBase {
+
+    // TODO: Consider renaming this CallsManagerPlugin.
+    interface CallsManagerListener {
+        void onCallAdded(Call call);
+        void onCallRemoved(Call call);
+        void onCallStateChanged(Call call, int oldState, int newState);
+        void onConnectionServiceChanged(
+                Call call,
+                ConnectionServiceWrapper oldService,
+                ConnectionServiceWrapper newService);
+        void onIncomingCallAnswered(Call call);
+        void onIncomingCallRejected(Call call, boolean rejectWithMessage, String textMessage);
+        void onForegroundCallChanged(Call oldForegroundCall, Call newForegroundCall);
+        void onAudioStateChanged(AudioState oldAudioState, AudioState newAudioState);
+        void onRingbackRequested(Call call, boolean ringback);
+        void onIsConferencedChanged(Call call);
+        void onIsVoipAudioModeChanged(Call call);
+        void onVideoStateChanged(Call call);
+    }
+
+    private static final CallsManager INSTANCE = new CallsManager();
+
+    /**
+     * The main call repository. Keeps an instance of all live calls. New incoming and outgoing
+     * calls are added to the map and removed when the calls move to the disconnected state.
+    *
+     * ConcurrentHashMap constructor params: 8 is initial table size, 0.9f is
+     * load factor before resizing, 1 means we only expect a single thread to
+     * access the map so make only a single shard
+     */
+    private final Set<Call> mCalls = Collections.newSetFromMap(
+            new ConcurrentHashMap<Call, Boolean>(8, 0.9f, 1));
+
+    private final ConnectionServiceRepository mConnectionServiceRepository =
+            new ConnectionServiceRepository();
+    private final DtmfLocalTonePlayer mDtmfLocalTonePlayer = new DtmfLocalTonePlayer();
+    private final InCallController mInCallController = new InCallController();
+    private final CallAudioManager mCallAudioManager;
+    private final Ringer mRinger;
+    // For this set initial table size to 16 because we add 13 listeners in
+    // the CallsManager constructor.
+    private final Set<CallsManagerListener> mListeners = Collections.newSetFromMap(
+            new ConcurrentHashMap<CallsManagerListener, Boolean>(16, 0.9f, 1));
+    private final HeadsetMediaButton mHeadsetMediaButton;
+    private final WiredHeadsetManager mWiredHeadsetManager;
+    private final TtyManager mTtyManager;
+    private final ProximitySensorManager mProximitySensorManager;
+
+    /**
+     * The call the user is currently interacting with. This is the call that should have audio
+     * focus and be visible in the in-call UI.
+     */
+    private Call mForegroundCall;
+
+    /** Singleton accessor. */
+    static CallsManager getInstance() {
+        return INSTANCE;
+    }
+
+    /**
+     * Initializes the required Telecom components.
+     */
+    private CallsManager() {
+        TelecomApp app = TelecomApp.getInstance();
+
+        StatusBarNotifier statusBarNotifier = new StatusBarNotifier(app, this);
+        mWiredHeadsetManager = new WiredHeadsetManager(app);
+        mCallAudioManager = new CallAudioManager(app, statusBarNotifier, mWiredHeadsetManager);
+        InCallTonePlayer.Factory playerFactory = new InCallTonePlayer.Factory(mCallAudioManager);
+        mRinger = new Ringer(mCallAudioManager, this, playerFactory, app);
+        mHeadsetMediaButton = new HeadsetMediaButton(app, this);
+        mTtyManager = new TtyManager(app, mWiredHeadsetManager);
+        mProximitySensorManager = new ProximitySensorManager(app);
+
+        mListeners.add(statusBarNotifier);
+        mListeners.add(new CallLogManager(app));
+        mListeners.add(new PhoneStateBroadcaster());
+        mListeners.add(mInCallController);
+        mListeners.add(mRinger);
+        mListeners.add(new RingbackPlayer(this, playerFactory));
+        mListeners.add(new InCallToneMonitor(playerFactory, this));
+        mListeners.add(mCallAudioManager);
+        mListeners.add(app.getMissedCallNotifier());
+        mListeners.add(mDtmfLocalTonePlayer);
+        mListeners.add(mHeadsetMediaButton);
+        mListeners.add(RespondViaSmsManager.getInstance());
+        mListeners.add(mProximitySensorManager);
+    }
+
+    @Override
+    public void onSuccessfulOutgoingCall(Call call, int callState) {
+        Log.v(this, "onSuccessfulOutgoingCall, %s", call);
+
+        setCallState(call, callState);
+        if (!mCalls.contains(call)) {
+            // Call was not added previously in startOutgoingCall due to it being a potential MMI
+            // code, so add it now.
+            addCall(call);
+        }
+
+        // The call's ConnectionService has been updated.
+        for (CallsManagerListener listener : mListeners) {
+            listener.onConnectionServiceChanged(call, null, call.getConnectionService());
+        }
+
+        markCallAsDialing(call);
+    }
+
+    @Override
+    public void onFailedOutgoingCall(Call call, int errorCode, String errorMsg) {
+        Log.v(this, "onFailedOutgoingCall, call: %s", call);
+
+        // TODO: Replace disconnect cause with more specific disconnect causes.
+        markCallAsDisconnected(call, errorCode, errorMsg);
+    }
+
+    @Override
+    public void onSuccessfulIncomingCall(Call call) {
+        Log.d(this, "onSuccessfulIncomingCall");
+        setCallState(call, CallState.RINGING);
+        addCall(call);
+    }
+
+    @Override
+    public void onFailedIncomingCall(Call call) {
+        setCallState(call, CallState.DISCONNECTED);
+        call.removeListener(this);
+    }
+
+    @Override
+    public void onRingbackRequested(Call call, boolean ringback) {
+        for (CallsManagerListener listener : mListeners) {
+            listener.onRingbackRequested(call, ringback);
+        }
+    }
+
+    @Override
+    public void onPostDialWait(Call call, String remaining) {
+        mInCallController.onPostDialWait(call, remaining);
+    }
+
+    @Override
+    public void onParentChanged(Call call) {
+        for (CallsManagerListener listener : mListeners) {
+            listener.onIsConferencedChanged(call);
+        }
+    }
+
+    @Override
+    public void onChildrenChanged(Call call) {
+        for (CallsManagerListener listener : mListeners) {
+            listener.onIsConferencedChanged(call);
+        }
+    }
+
+    @Override
+    public void onIsVoipAudioModeChanged(Call call) {
+        for (CallsManagerListener listener : mListeners) {
+            listener.onIsVoipAudioModeChanged(call);
+        }
+    }
+
+    @Override
+    public void onVideoStateChanged(Call call) {
+        for (CallsManagerListener listener : mListeners) {
+            listener.onVideoStateChanged(call);
+        }
+    }
+
+    ImmutableCollection<Call> getCalls() {
+        return ImmutableList.copyOf(mCalls);
+    }
+
+    Call getForegroundCall() {
+        return mForegroundCall;
+    }
+
+    Ringer getRinger() {
+        return mRinger;
+    }
+
+    InCallController getInCallController() {
+        return mInCallController;
+    }
+
+    boolean hasEmergencyCall() {
+        for (Call call : mCalls) {
+            if (call.isEmergencyCall()) {
+                return true;
+            }
+        }
+        return false;
+    }
+
+    AudioState getAudioState() {
+        return mCallAudioManager.getAudioState();
+    }
+
+    boolean isTtySupported() {
+        return mTtyManager.isTtySupported();
+    }
+
+    int getCurrentTtyMode() {
+        return mTtyManager.getCurrentTtyMode();
+    }
+
+    /**
+     * Starts the process to attach the call to a connection service.
+     *
+     * @param phoneAccountHandle The phone account which contains the component name of the
+     *        connection service to use for this call.
+     * @param extras The optional extras Bundle passed with the intent used for the incoming call.
+     */
+    void processIncomingCallIntent(PhoneAccountHandle phoneAccountHandle, Bundle extras) {
+        Log.d(this, "processIncomingCallIntent");
+        Uri handle = extras.getParcelable(TelephonyManager.EXTRA_INCOMING_NUMBER);
+        Call call = new Call(
+                mConnectionServiceRepository,
+                handle,
+                null /* gatewayInfo */,
+                null /* connectionManagerPhoneAccount */,
+                phoneAccountHandle,
+                true /* isIncoming */,
+                false /* isConference */);
+
+        call.setExtras(extras);
+        // TODO: Move this to be a part of addCall()
+        call.addListener(this);
+        call.startCreateConnection();
+    }
+
+    /**
+     * Kicks off the first steps to creating an outgoing call so that InCallUI can launch.
+     *
+     * @param handle Handle to connect the call with.
+     * @param phoneAccountHandle The phone account which contains the component name of the
+     *        connection service to use for this call.
+     * @param extras The optional extras Bundle passed with the intent used for the incoming call.
+     */
+    Call startOutgoingCall(Uri handle, PhoneAccountHandle phoneAccountHandle, Bundle extras) {
+        // We only allow a single outgoing call at any given time. Before placing a call, make sure
+        // there doesn't already exist another outgoing call.
+        Call call = getFirstCallWithState(CallState.NEW, CallState.DIALING,
+                CallState.CONNECTING, CallState.PRE_DIAL_WAIT);
+
+        if (call != null) {
+            Log.i(this, "Canceling simultaneous outgoing call.");
+            return null;
+        }
+
+        TelecomApp app = TelecomApp.getInstance();
+
+        // Only dial with the requested phoneAccount if it is still valid. Otherwise treat this call
+        // as if a phoneAccount was not specified (does the default behavior instead).
+        // Note: We will not attempt to dial with a requested phoneAccount if it is disabled.
+        if (phoneAccountHandle != null) {
+            List<PhoneAccountHandle> enabledAccounts =
+                    app.getPhoneAccountRegistrar().getEnabledPhoneAccounts(handle.getScheme());
+            if (!enabledAccounts.contains(phoneAccountHandle)) {
+                phoneAccountHandle = null;
+            }
+        }
+
+        if (phoneAccountHandle == null) {
+            // No preset account, check if default exists that supports the URI scheme for the
+            // handle.
+            PhoneAccountHandle defaultAccountHandle =
+                    app.getPhoneAccountRegistrar().getDefaultOutgoingPhoneAccount(
+                            handle.getScheme());
+            if (defaultAccountHandle != null) {
+                phoneAccountHandle = defaultAccountHandle;
+            }
+        }
+
+        // Create a call with original handle. The handle may be changed when the call is attached
+        // to a connection service, but in most cases will remain the same.
+        call = new Call(
+                mConnectionServiceRepository,
+                handle,
+                null /* gatewayInfo */,
+                null /* connectionManagerPhoneAccount */,
+                phoneAccountHandle,
+                false /* isIncoming */,
+                false /* isConference */);
+        call.setExtras(extras);
+
+        final boolean emergencyCall = TelephonyUtil.shouldProcessAsEmergency(app, call.getHandle());
+        if (phoneAccountHandle == null && !emergencyCall) {
+            // This is the state where the user is expected to select an account
+            call.setState(CallState.PRE_DIAL_WAIT);
+        } else {
+            call.setState(CallState.CONNECTING);
+        }
+
+        if (!isPotentialMMICode(handle)) {
+            addCall(call);
+        } else {
+            call.addListener(this);
+        }
+
+        return call;
+    }
+
+    /**
+     * Attempts to issue/connect the specified call.
+     *
+     * @param handle Handle to connect the call with.
+     * @param gatewayInfo Optional gateway information that can be used to route the call to the
+     *        actual dialed handle via a gateway provider. May be null.
+     * @param speakerphoneOn Whether or not to turn the speakerphone on once the call connects.
+     * @param videoState The desired video state for the outgoing call.
+     */
+    void placeOutgoingCall(Call call, Uri handle, GatewayInfo gatewayInfo, boolean speakerphoneOn,
+            int videoState) {
+        if (call == null) {
+            // don't do anything if the call no longer exists
+            Log.i(this, "Canceling unknown call.");
+            return;
+        }
+
+        final Uri uriHandle = (gatewayInfo == null) ? handle : gatewayInfo.getGatewayAddress();
+
+        if (gatewayInfo == null) {
+            Log.i(this, "Creating a new outgoing call with handle: %s", Log.piiHandle(uriHandle));
+        } else {
+            Log.i(this, "Creating a new outgoing call with gateway handle: %s, original handle: %s",
+                    Log.pii(uriHandle), Log.pii(handle));
+        }
+
+        call.setHandle(uriHandle);
+        call.setGatewayInfo(gatewayInfo);
+        call.setStartWithSpeakerphoneOn(speakerphoneOn);
+        call.setVideoState(videoState);
+
+        TelecomApp app = TelecomApp.getInstance();
+        final boolean emergencyCall = TelephonyUtil.shouldProcessAsEmergency(app, call.getHandle());
+        if (emergencyCall) {
+            // Emergency -- CreateConnectionProcessor will choose accounts automatically
+            call.setTargetPhoneAccount(null);
+        }
+
+        if (call.getTargetPhoneAccount() != null || emergencyCall) {
+            // If the account has been set, proceed to place the outgoing call.
+            // Otherwise the connection will be initiated when the account is set by the user.
+            call.startCreateConnection();
+        }
+    }
+
+    /**
+     * Attempts to start a conference call for the specified call.
+     *
+     * @param call The call to conference.
+     * @param otherCall The other call to conference with.
+     */
+    void conference(Call call, Call otherCall) {
+        call.conferenceWith(otherCall);
+    }
+
+    /**
+     * Instructs Telecom to answer the specified call. Intended to be invoked by the in-call
+     * app through {@link InCallAdapter} after Telecom notifies it of an incoming call followed by
+     * the user opting to answer said call.
+     *
+     * @param call The call to answer.
+     * @param videoState The video state in which to answer the call.
+     */
+    void answerCall(Call call, int videoState) {
+        if (!mCalls.contains(call)) {
+            Log.i(this, "Request to answer a non-existent call %s", call);
+        } else {
+            // If the foreground call is not the ringing call and it is currently isActive() or
+            // STATE_DIALING, put it on hold before answering the call.
+            if (mForegroundCall != null && mForegroundCall != call &&
+                    (mForegroundCall.isActive() ||
+                     mForegroundCall.getState() == CallState.DIALING)) {
+                Log.v(this, "Holding active/dialing call %s before answering incoming call %s.",
+                        mForegroundCall, call);
+                mForegroundCall.hold();
+                // TODO: Wait until we get confirmation of the active call being
+                // on-hold before answering the new call.
+                // TODO: Import logic from CallManager.acceptCall()
+            }
+
+            for (CallsManagerListener listener : mListeners) {
+                listener.onIncomingCallAnswered(call);
+            }
+
+            // We do not update the UI until we get confirmation of the answer() through
+            // {@link #markCallAsActive}.
+            call.answer(videoState);
+        }
+    }
+
+    /**
+     * Instructs Telecom to reject the specified call. Intended to be invoked by the in-call
+     * app through {@link InCallAdapter} after Telecom notifies it of an incoming call followed by
+     * the user opting to reject said call.
+     */
+    void rejectCall(Call call, boolean rejectWithMessage, String textMessage) {
+        if (!mCalls.contains(call)) {
+            Log.i(this, "Request to reject a non-existent call %s", call);
+        } else {
+            for (CallsManagerListener listener : mListeners) {
+                listener.onIncomingCallRejected(call, rejectWithMessage, textMessage);
+            }
+            call.reject(rejectWithMessage, textMessage);
+        }
+    }
+
+    /**
+     * Instructs Telecom to play the specified DTMF tone within the specified call.
+     *
+     * @param digit The DTMF digit to play.
+     */
+    void playDtmfTone(Call call, char digit) {
+        if (!mCalls.contains(call)) {
+            Log.i(this, "Request to play DTMF in a non-existent call %s", call);
+        } else {
+            call.playDtmfTone(digit);
+            mDtmfLocalTonePlayer.playTone(call, digit);
+        }
+    }
+
+    /**
+     * Instructs Telecom to stop the currently playing DTMF tone, if any.
+     */
+    void stopDtmfTone(Call call) {
+        if (!mCalls.contains(call)) {
+            Log.i(this, "Request to stop DTMF in a non-existent call %s", call);
+        } else {
+            call.stopDtmfTone();
+            mDtmfLocalTonePlayer.stopTone(call);
+        }
+    }
+
+    /**
+     * Instructs Telecom to continue (or not) the current post-dial DTMF string, if any.
+     */
+    void postDialContinue(Call call, boolean proceed) {
+        if (!mCalls.contains(call)) {
+            Log.i(this, "Request to continue post-dial string in a non-existent call %s", call);
+        } else {
+            call.postDialContinue(proceed);
+        }
+    }
+
+    /**
+     * Instructs Telecom to disconnect the specified call. Intended to be invoked by the
+     * in-call app through {@link InCallAdapter} for an ongoing call. This is usually triggered by
+     * the user hitting the end-call button.
+     */
+    void disconnectCall(Call call) {
+        Log.v(this, "disconnectCall %s", call);
+
+        if (!mCalls.contains(call)) {
+            Log.w(this, "Unknown call (%s) asked to disconnect", call);
+        } else {
+            call.disconnect();
+        }
+    }
+
+    /**
+     * Instructs Telecom to disconnect all calls.
+     */
+    void disconnectAllCalls() {
+        Log.v(this, "disconnectAllCalls");
+
+        for (Call call : mCalls) {
+            disconnectCall(call);
+        }
+    }
+
+
+    /**
+     * Instructs Telecom to put the specified call on hold. Intended to be invoked by the
+     * in-call app through {@link InCallAdapter} for an ongoing call. This is usually triggered by
+     * the user hitting the hold button during an active call.
+     */
+    void holdCall(Call call) {
+        if (!mCalls.contains(call)) {
+            Log.w(this, "Unknown call (%s) asked to be put on hold", call);
+        } else {
+            Log.d(this, "Putting call on hold: (%s)", call);
+            call.hold();
+        }
+    }
+
+    /**
+     * Instructs Telecom to release the specified call from hold. Intended to be invoked by
+     * the in-call app through {@link InCallAdapter} for an ongoing call. This is usually triggered
+     * by the user hitting the hold button during a held call.
+     */
+    void unholdCall(Call call) {
+        if (!mCalls.contains(call)) {
+            Log.w(this, "Unknown call (%s) asked to be removed from hold", call);
+        } else {
+            Log.d(this, "unholding call: (%s)", call);
+            for (Call c : mCalls) {
+                if (c != null && c.isAlive() && c != call) {
+                    c.hold();
+                }
+            }
+            call.unhold();
+        }
+    }
+
+    /** Called by the in-call UI to change the mute state. */
+    void mute(boolean shouldMute) {
+        mCallAudioManager.mute(shouldMute);
+    }
+
+    /**
+      * Called by the in-call UI to change the audio route, for example to change from earpiece to
+      * speaker phone.
+      */
+    void setAudioRoute(int route) {
+        mCallAudioManager.setAudioRoute(route);
+    }
+
+    /** Called by the in-call UI to turn the proximity sensor on. */
+    void turnOnProximitySensor() {
+        mProximitySensorManager.turnOn();
+    }
+
+    /**
+     * Called by the in-call UI to turn the proximity sensor off.
+     * @param screenOnImmediately If true, the screen will be turned on immediately. Otherwise,
+     *        the screen will be kept off until the proximity sensor goes negative.
+     */
+    void turnOffProximitySensor(boolean screenOnImmediately) {
+        mProximitySensorManager.turnOff(screenOnImmediately);
+    }
+
+    void phoneAccountSelected(Call call, PhoneAccountHandle account) {
+        if (!mCalls.contains(call)) {
+            Log.i(this, "Attemped to add account to unknown call %s", call);
+        } else {
+            call.setTargetPhoneAccount(account);
+            call.startCreateConnection();
+        }
+    }
+
+    /** Called when the audio state changes. */
+    void onAudioStateChanged(AudioState oldAudioState, AudioState newAudioState) {
+        Log.v(this, "onAudioStateChanged, audioState: %s -> %s", oldAudioState, newAudioState);
+        for (CallsManagerListener listener : mListeners) {
+            listener.onAudioStateChanged(oldAudioState, newAudioState);
+        }
+    }
+
+    void markCallAsRinging(Call call) {
+        setCallState(call, CallState.RINGING);
+    }
+
+    void markCallAsDialing(Call call) {
+        setCallState(call, CallState.DIALING);
+    }
+
+    void markCallAsActive(Call call) {
+        if (call.getConnectTimeMillis() == 0) {
+            call.setConnectTimeMillis(System.currentTimeMillis());
+        }
+        setCallState(call, CallState.ACTIVE);
+
+        if (call.getStartWithSpeakerphoneOn()) {
+            setAudioRoute(AudioState.ROUTE_SPEAKER);
+        }
+    }
+
+    void markCallAsOnHold(Call call) {
+        setCallState(call, CallState.ON_HOLD);
+    }
+
+    /**
+     * Marks the specified call as STATE_DISCONNECTED and notifies the in-call app. If this was the last
+     * live call, then also disconnect from the in-call controller.
+     *
+     * @param disconnectCause The disconnect reason, see {@link android.telephony.DisconnectCause}.
+     * @param disconnectMessage Optional message about the disconnect.
+     */
+    void markCallAsDisconnected(Call call, int disconnectCause, String disconnectMessage) {
+        call.setDisconnectCause(disconnectCause, disconnectMessage);
+        setCallState(call, CallState.DISCONNECTED);
+        removeCall(call);
+    }
+
+    /**
+     * Removes an existing disconnected call, and notifies the in-call app.
+     */
+    void markCallAsRemoved(Call call) {
+        removeCall(call);
+    }
+
+    /**
+     * Cleans up any calls currently associated with the specified connection service when the
+     * service binder disconnects unexpectedly.
+     *
+     * @param service The connection service that disconnected.
+     */
+    void handleConnectionServiceDeath(ConnectionServiceWrapper service) {
+        if (service != null) {
+            for (Call call : mCalls) {
+                if (call.getConnectionService() == service) {
+                    markCallAsDisconnected(call, DisconnectCause.ERROR_UNSPECIFIED, null);
+                }
+            }
+        }
+    }
+
+    boolean hasAnyCalls() {
+        return !mCalls.isEmpty();
+    }
+
+    boolean hasActiveOrHoldingCall() {
+        return getFirstCallWithState(CallState.ACTIVE, CallState.ON_HOLD) != null;
+    }
+
+    boolean hasRingingCall() {
+        return getFirstCallWithState(CallState.RINGING) != null;
+    }
+
+    boolean onMediaButton(int type) {
+        if (hasAnyCalls()) {
+            if (HeadsetMediaButton.SHORT_PRESS == type) {
+                Call ringingCall = getFirstCallWithState(CallState.RINGING);
+                if (ringingCall == null) {
+                    mCallAudioManager.toggleMute();
+                    return true;
+                } else {
+                    ringingCall.answer(ringingCall.getVideoState());
+                    return true;
+                }
+            } else if (HeadsetMediaButton.LONG_PRESS == type) {
+                Log.d(this, "handleHeadsetHook: longpress -> hangup");
+                Call callToHangup = getFirstCallWithState(
+                        CallState.RINGING, CallState.DIALING, CallState.ACTIVE, CallState.ON_HOLD);
+                if (callToHangup != null) {
+                    callToHangup.disconnect();
+                    return true;
+                }
+            }
+        }
+        return false;
+    }
+
+    /**
+     * Checks to see if the specified call is the only high-level call and if so, enable the
+     * "Add-call" button. We allow you to add a second call but not a third or beyond.
+     *
+     * @param call The call to test for add-call.
+     * @return Whether the add-call feature should be enabled for the call.
+     */
+    protected boolean isAddCallCapable(Call call) {
+        if (call.getParentCall() != null) {
+            // Never true for child calls.
+            return false;
+        }
+
+        // Loop through all the other calls and there exists a top level (has no parent) call
+        // that is not the specified call, return false.
+        for (Call otherCall : mCalls) {
+            if (call != otherCall && otherCall.getParentCall() == null) {
+                return false;
+            }
+        }
+        return true;
+    }
+
+    /**
+     * Returns the first call that it finds with the given states. The states are treated as having
+     * priority order so that any call with the first state will be returned before any call with
+     * states listed later in the parameter list.
+     */
+    Call getFirstCallWithState(int... states) {
+        for (int currentState : states) {
+            // check the foreground first
+            if (mForegroundCall != null && mForegroundCall.getState() == currentState) {
+                return mForegroundCall;
+            }
+
+            for (Call call : mCalls) {
+                if (currentState == call.getState()) {
+                    return call;
+                }
+            }
+        }
+        return null;
+    }
+
+    Call createConferenceCall(
+            PhoneAccountHandle phoneAccount,
+            ParcelableConference parcelableConference) {
+        Call call = new Call(
+                mConnectionServiceRepository,
+                null /* handle */,
+                null /* gatewayInfo */,
+                null /* connectionManagerPhoneAccount */,
+                phoneAccount,
+                false /* isIncoming */,
+                true /* isConference */);
+
+        setCallState(call, Call.getStateFromConnectionState(parcelableConference.getState()));
+        if (call.getState() == CallState.ACTIVE) {
+            call.setConnectTimeMillis(System.currentTimeMillis());
+        }
+        call.setCallCapabilities(parcelableConference.getCapabilities());
+
+        // TODO: Move this to be a part of addCall()
+        call.addListener(this);
+        addCall(call);
+        return call;
+    }
+
+
+    /**
+     * Adds the specified call to the main list of live calls.
+     *
+     * @param call The call to add.
+     */
+    private void addCall(Call call) {
+        Log.v(this, "addCall(%s)", call);
+
+        call.addListener(this);
+        mCalls.add(call);
+
+        // TODO: Update mForegroundCall prior to invoking
+        // onCallAdded for calls which immediately take the foreground (like the first call).
+        for (CallsManagerListener listener : mListeners) {
+            listener.onCallAdded(call);
+        }
+        updateForegroundCall();
+    }
+
+    private void removeCall(Call call) {
+        Log.v(this, "removeCall(%s)", call);
+
+        call.setParentCall(null);  // need to clean up parent relationship before destroying.
+        call.removeListener(this);
+        call.clearConnectionService();
+
+        boolean shouldNotify = false;
+        if (mCalls.contains(call)) {
+            mCalls.remove(call);
+            shouldNotify = true;
+        }
+
+        // Only broadcast changes for calls that are being tracked.
+        if (shouldNotify) {
+            for (CallsManagerListener listener : mListeners) {
+                listener.onCallRemoved(call);
+            }
+            updateForegroundCall();
+        }
+    }
+
+    /**
+     * Sets the specified state on the specified call.
+     *
+     * @param call The call.
+     * @param newState The new state of the call.
+     */
+    private void setCallState(Call call, int newState) {
+        if (call == null) {
+            return;
+        }
+        int oldState = call.getState();
+        Log.i(this, "setCallState %s -> %s, call: %s", CallState.toString(oldState),
+                CallState.toString(newState), call);
+        if (newState != oldState) {
+            // Unfortunately, in the telephony world the radio is king. So if the call notifies
+            // us that the call is in a particular state, we allow it even if it doesn't make
+            // sense (e.g., STATE_ACTIVE -> STATE_RINGING).
+            // TODO: Consider putting a stop to the above and turning CallState
+            // into a well-defined state machine.
+            // TODO: Define expected state transitions here, and log when an
+            // unexpected transition occurs.
+            call.setState(newState);
+
+            // Only broadcast state change for calls that are being tracked.
+            if (mCalls.contains(call)) {
+                for (CallsManagerListener listener : mListeners) {
+                    listener.onCallStateChanged(call, oldState, newState);
+                }
+                updateForegroundCall();
+            }
+        }
+    }
+
+    /**
+     * Checks which call should be visible to the user and have audio focus.
+     */
+    private void updateForegroundCall() {
+        Call newForegroundCall = null;
+        for (Call call : mCalls) {
+            // TODO: Foreground-ness needs to be explicitly set. No call, regardless
+            // of its state will be foreground by default and instead the connection service should
+            // be notified when its calls enter and exit foreground state. Foreground will mean that
+            // the call should play audio and listen to microphone if it wants.
+
+            // Active calls have priority.
+            if (call.isActive()) {
+                newForegroundCall = call;
+                break;
+            }
+
+            if (call.isAlive() || call.getState() == CallState.RINGING) {
+                newForegroundCall = call;
+                // Don't break in case there's an active call that has priority.
+            }
+        }
+
+        if (newForegroundCall != mForegroundCall) {
+            Log.v(this, "Updating foreground call, %s -> %s.", mForegroundCall, newForegroundCall);
+            Call oldForegroundCall = mForegroundCall;
+            mForegroundCall = newForegroundCall;
+
+            for (CallsManagerListener listener : mListeners) {
+                listener.onForegroundCallChanged(oldForegroundCall, mForegroundCall);
+            }
+        }
+    }
+
+    private boolean isPotentialMMICode(Uri handle) {
+        return (handle != null && handle.getSchemeSpecificPart() != null
+                && handle.getSchemeSpecificPart().contains("#"));
+    }
+}