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.Log; 20 import android.telecom.PhoneAccountHandle; 21 22 import java.util.ArrayList; 23 import java.util.HashMap; 24 import java.util.List; 25 import java.util.Map; 26 27 /** 28 * @hide 29 */ 30 public class HoldTracker { 31 private final Map<PhoneAccountHandle, List<Holdable>> mHoldables; 32 HoldTracker()33 public HoldTracker() { 34 mHoldables = new HashMap<>(); 35 } 36 37 /** 38 * Adds the holdable associated with the {@code phoneAccountHandle}, this method may update 39 * the hold state for all holdable associated with the {@code phoneAccountHandle}. 40 */ addHoldable(PhoneAccountHandle phoneAccountHandle, Holdable holdable)41 public void addHoldable(PhoneAccountHandle phoneAccountHandle, Holdable holdable) { 42 if (!mHoldables.containsKey(phoneAccountHandle)) { 43 mHoldables.put(phoneAccountHandle, new ArrayList<>(1)); 44 } 45 List<Holdable> holdables = mHoldables.get(phoneAccountHandle); 46 if (!holdables.contains(holdable)) { 47 holdables.add(holdable); 48 updateHoldCapability(phoneAccountHandle); 49 } 50 } 51 52 /** 53 * Removes the holdable associated with the {@code phoneAccountHandle}, this method may update 54 * the hold state for all holdable associated with the {@code phoneAccountHandle}. 55 */ removeHoldable(PhoneAccountHandle phoneAccountHandle, Holdable holdable)56 public void removeHoldable(PhoneAccountHandle phoneAccountHandle, Holdable holdable) { 57 if (!mHoldables.containsKey(phoneAccountHandle)) { 58 return; 59 } 60 61 if (mHoldables.get(phoneAccountHandle).remove(holdable)) { 62 updateHoldCapability(phoneAccountHandle); 63 } 64 } 65 66 /** 67 * Updates the hold capability for all holdables associated with the {@code phoneAccountHandle}. 68 */ updateHoldCapability(PhoneAccountHandle phoneAccountHandle)69 public void updateHoldCapability(PhoneAccountHandle phoneAccountHandle) { 70 if (!mHoldables.containsKey(phoneAccountHandle)) { 71 return; 72 } 73 74 List<Holdable> holdables = mHoldables.get(phoneAccountHandle); 75 int topHoldableCount = 0; 76 for (Holdable holdable : holdables) { 77 if (!holdable.isChildHoldable()) { 78 ++topHoldableCount; 79 } 80 } 81 82 Log.d(this, "topHoldableCount = " + topHoldableCount); 83 boolean isHoldable = topHoldableCount < 2; 84 for (Holdable holdable : holdables) { 85 holdable.setHoldable(holdable.isChildHoldable() ? false : isHoldable); 86 } 87 } 88 } 89