1 /* 2 * Copyright (C) 2017 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.android.services.telephony; 18 19 import android.telecom.PhoneAccountHandle; 20 21 import java.util.ArrayList; 22 import java.util.HashMap; 23 import java.util.List; 24 import java.util.Map; 25 26 /** 27 * @hide 28 */ 29 public class HoldTracker { 30 private final Map<PhoneAccountHandle, List<Holdable>> mHoldables; 31 HoldTracker()32 public HoldTracker() { 33 mHoldables = new HashMap<>(); 34 } 35 36 /** 37 * Adds the holdable associated with the {@code phoneAccountHandle}, this method may update 38 * the hold state for all holdable associated with the {@code phoneAccountHandle}. 39 */ addHoldable(PhoneAccountHandle phoneAccountHandle, Holdable holdable)40 public void addHoldable(PhoneAccountHandle phoneAccountHandle, Holdable holdable) { 41 if (!mHoldables.containsKey(phoneAccountHandle)) { 42 mHoldables.put(phoneAccountHandle, new ArrayList<>(1)); 43 } 44 List<Holdable> holdables = mHoldables.get(phoneAccountHandle); 45 if (!holdables.contains(holdable)) { 46 holdables.add(holdable); 47 updateHoldCapability(phoneAccountHandle); 48 } 49 } 50 51 /** 52 * Removes the holdable associated with the {@code phoneAccountHandle}, this method may update 53 * the hold state for all holdable associated with the {@code phoneAccountHandle}. 54 */ removeHoldable(PhoneAccountHandle phoneAccountHandle, Holdable holdable)55 public void removeHoldable(PhoneAccountHandle phoneAccountHandle, Holdable holdable) { 56 if (!mHoldables.containsKey(phoneAccountHandle)) { 57 return; 58 } 59 60 if (mHoldables.get(phoneAccountHandle).remove(holdable)) { 61 updateHoldCapability(phoneAccountHandle); 62 } 63 } 64 65 /** 66 * Updates the hold capability for all holdables associated with the {@code phoneAccountHandle}. 67 */ updateHoldCapability(PhoneAccountHandle phoneAccountHandle)68 public void updateHoldCapability(PhoneAccountHandle phoneAccountHandle) { 69 if (!mHoldables.containsKey(phoneAccountHandle)) { 70 return; 71 } 72 73 List<Holdable> holdables = mHoldables.get(phoneAccountHandle); 74 int topHoldableCount = 0; 75 for (Holdable holdable : holdables) { 76 if (!holdable.isChildHoldable()) { 77 ++topHoldableCount; 78 } 79 } 80 81 Log.d(this, "topHoldableCount = " + topHoldableCount); 82 boolean isHoldable = topHoldableCount < 2; 83 for (Holdable holdable : holdables) { 84 holdable.setHoldable(holdable.isChildHoldable() ? false : isHoldable); 85 } 86 } 87 } 88