104 lines
3.3 KiB
Java
104 lines
3.3 KiB
Java
/*
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* Copyright (C) 2022 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package android.telephony.ims;
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import android.annotation.CallbackExecutor;
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import android.annotation.NonNull;
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import android.annotation.SystemApi;
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import android.os.Binder;
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import com.android.internal.telephony.ISipDialogStateCallback;
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import java.lang.ref.WeakReference;
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import java.util.List;
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import java.util.concurrent.Executor;
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/**
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* This callback is used to notify listeners of SIP Dialog state changes.
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* @hide
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*/
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@SystemApi
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public abstract class SipDialogStateCallback {
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private CallbackBinder mCallback;
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/**
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* @hide
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*/
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public void attachExecutor(@NonNull @CallbackExecutor Executor executor) {
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if (executor == null) {
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throw new IllegalArgumentException("SipDialogStateCallback Executor must be non-null");
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}
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mCallback = new CallbackBinder(this, executor);
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}
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private static class CallbackBinder extends ISipDialogStateCallback.Stub {
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private WeakReference<SipDialogStateCallback> mSipDialogStateCallbackWeakRef;
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private Executor mExecutor;
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private CallbackBinder(SipDialogStateCallback callback, Executor executor) {
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mSipDialogStateCallbackWeakRef = new WeakReference<SipDialogStateCallback>(callback);
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mExecutor = executor;
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}
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Executor getExecutor() {
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return mExecutor;
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}
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@Override
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public void onActiveSipDialogsChanged(List<SipDialogState> dialogs) {
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SipDialogStateCallback callback = mSipDialogStateCallbackWeakRef.get();
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if (callback == null || dialogs == null) return;
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Binder.withCleanCallingIdentity(
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() -> mExecutor.execute(() -> callback.onActiveSipDialogsChanged(dialogs)));
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}
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}
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/**
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* The state of one or more SIP dialogs has changed.
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*
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* @param dialogs A List of SipDialogState objects representing the state of the active
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* SIP Dialogs.
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*/
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public abstract void onActiveSipDialogsChanged(@NonNull List<SipDialogState> dialogs);
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/**
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* An unexpected error has occurred and the Telephony process has crashed. This
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* has caused this callback to be deregistered. The callback must be re-registered
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* in order to continue listening to the IMS service state.
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*/
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public abstract void onError();
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/**
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* The callback to notify the death of telephony process
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* @hide
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*/
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public final void binderDied() {
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if (mCallback != null) {
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mCallback.getExecutor().execute(() -> onError());
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}
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}
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/**
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* Return the callback binder
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* @hide
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*/
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public CallbackBinder getCallbackBinder() {
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return mCallback;
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}
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}
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