| /* |
| * Copyright (C) 2014 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.util.ArrayMap; |
| |
| import com.android.internal.annotations.VisibleForTesting; |
| |
| import java.util.Map; |
| |
| /** Utility to map {@link Call} objects to unique IDs. IDs are generated when a call is added. */ |
| @VisibleForTesting |
| public class CallIdMapper { |
| /** |
| * A very basic bidirectional map. |
| */ |
| static class BiMap<K, V> { |
| private Map<K, V> mPrimaryMap = new ArrayMap<>(); |
| private Map<V, K> mSecondaryMap = new ArrayMap<>(); |
| |
| public boolean put(K key, V value) { |
| if (key == null || value == null || mPrimaryMap.containsKey(key) || |
| mSecondaryMap.containsKey(value)) { |
| return false; |
| } |
| |
| mPrimaryMap.put(key, value); |
| mSecondaryMap.put(value, key); |
| return true; |
| } |
| |
| public boolean remove(K key) { |
| if (key == null) { |
| return false; |
| } |
| if (mPrimaryMap.containsKey(key)) { |
| V value = getValue(key); |
| mPrimaryMap.remove(key); |
| mSecondaryMap.remove(value); |
| return true; |
| } |
| return false; |
| } |
| |
| public boolean removeValue(V value) { |
| if (value == null) { |
| return false; |
| } |
| return remove(getKey(value)); |
| } |
| |
| public V getValue(K key) { |
| return mPrimaryMap.get(key); |
| } |
| |
| public K getKey(V value) { |
| return mSecondaryMap.get(value); |
| } |
| |
| public void clear() { |
| mPrimaryMap.clear(); |
| mSecondaryMap.clear(); |
| } |
| } |
| |
| public interface ICallInfo { |
| String getCallId(Call call); |
| } |
| |
| private final BiMap<String, Call> mCalls = new BiMap<>(); |
| private ICallInfo mCallInfo; |
| |
| public CallIdMapper(ICallInfo callInfo) { |
| mCallInfo = callInfo; |
| } |
| |
| void replaceCall(Call newCall, Call callToReplace) { |
| // Use the old call's ID for the new call. |
| String callId = getCallId(callToReplace); |
| mCalls.put(callId, newCall); |
| } |
| |
| void addCall(Call call, String id) { |
| if (call == null) { |
| return; |
| } |
| mCalls.put(id, call); |
| } |
| |
| void addCall(Call call) { |
| addCall(call, mCallInfo.getCallId(call)); |
| } |
| |
| void removeCall(Call call) { |
| if (call == null) { |
| return; |
| } |
| mCalls.removeValue(call); |
| } |
| |
| void removeCall(String callId) { |
| mCalls.remove(callId); |
| } |
| |
| String getCallId(Call call) { |
| if (call == null || mCalls.getKey(call) == null) { |
| return null; |
| } |
| return mCallInfo.getCallId(call); |
| } |
| |
| Call getCall(Object objId) { |
| String callId = null; |
| if (objId instanceof String) { |
| callId = (String) objId; |
| } |
| |
| return mCalls.getValue(callId); |
| } |
| |
| void clear() { |
| mCalls.clear(); |
| } |
| } |