| /* |
| * Copyright (C) 2006 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.internal.telephony; |
| |
| import android.os.AsyncResult; |
| import android.os.Handler; |
| import android.os.Message; |
| import android.util.Log; |
| |
| import com.android.internal.telephony.CommandException; |
| |
| |
| /** |
| * {@hide} |
| */ |
| public abstract class CallTracker extends Handler { |
| |
| private static final boolean DBG_POLL = false; |
| |
| //***** Constants |
| |
| static final int POLL_DELAY_MSEC = 250; |
| |
| protected int pendingOperations; |
| protected boolean needsPoll; |
| protected Message lastRelevantPoll; |
| |
| public CommandsInterface cm; |
| |
| |
| //***** Events |
| |
| protected static final int EVENT_POLL_CALLS_RESULT = 1; |
| protected static final int EVENT_CALL_STATE_CHANGE = 2; |
| protected static final int EVENT_REPOLL_AFTER_DELAY = 3; |
| protected static final int EVENT_OPERATION_COMPLETE = 4; |
| protected static final int EVENT_GET_LAST_CALL_FAIL_CAUSE = 5; |
| |
| protected static final int EVENT_SWITCH_RESULT = 8; |
| protected static final int EVENT_RADIO_AVAILABLE = 9; |
| protected static final int EVENT_RADIO_NOT_AVAILABLE = 10; |
| protected static final int EVENT_CONFERENCE_RESULT = 11; |
| protected static final int EVENT_SEPARATE_RESULT = 12; |
| protected static final int EVENT_ECT_RESULT = 13; |
| protected static final int EVENT_EXIT_ECM_RESPONSE_CDMA = 14; |
| protected static final int EVENT_CALL_WAITING_INFO_CDMA = 15; |
| protected static final int EVENT_THREE_WAY_DIAL_L2_RESULT_CDMA = 16; |
| |
| protected void pollCallsWhenSafe() { |
| needsPoll = true; |
| |
| if (checkNoOperationsPending()) { |
| lastRelevantPoll = obtainMessage(EVENT_POLL_CALLS_RESULT); |
| cm.getCurrentCalls(lastRelevantPoll); |
| } |
| } |
| |
| protected void |
| pollCallsAfterDelay() { |
| Message msg = obtainMessage(); |
| |
| msg.what = EVENT_REPOLL_AFTER_DELAY; |
| sendMessageDelayed(msg, POLL_DELAY_MSEC); |
| } |
| |
| protected boolean |
| isCommandExceptionRadioNotAvailable(Throwable e) { |
| return e != null && e instanceof CommandException |
| && ((CommandException)e).getCommandError() |
| == CommandException.Error.RADIO_NOT_AVAILABLE; |
| } |
| |
| protected abstract void handlePollCalls(AsyncResult ar); |
| |
| protected void handleRadioAvailable() { |
| pollCallsWhenSafe(); |
| } |
| |
| /** |
| * Obtain a complete message that indicates that this operation |
| * does not require polling of getCurrentCalls(). However, if other |
| * operations that do need getCurrentCalls() are pending or are |
| * scheduled while this operation is pending, the invocation |
| * of getCurrentCalls() will be postponed until this |
| * operation is also complete. |
| */ |
| protected Message |
| obtainNoPollCompleteMessage(int what) { |
| pendingOperations++; |
| lastRelevantPoll = null; |
| return obtainMessage(what); |
| } |
| |
| /** |
| * @return true if we're idle or there's a call to getCurrentCalls() pending |
| * but nothing else |
| */ |
| private boolean |
| checkNoOperationsPending() { |
| if (DBG_POLL) log("checkNoOperationsPending: pendingOperations=" + |
| pendingOperations); |
| return pendingOperations == 0; |
| } |
| |
| |
| //***** Overridden from Handler |
| public abstract void handleMessage (Message msg); |
| public abstract void registerForVoiceCallStarted(Handler h, int what, Object obj); |
| public abstract void unregisterForVoiceCallStarted(Handler h); |
| public abstract void registerForVoiceCallEnded(Handler h, int what, Object obj); |
| public abstract void unregisterForVoiceCallEnded(Handler h); |
| |
| protected abstract void log(String msg); |
| |
| } |