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172 lines
4.5 KiB
172 lines
4.5 KiB
namespace Oculus.Platform
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{
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using UnityEngine;
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using System;
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using System.Collections.Generic;
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public static class Callback
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{
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#region Notification Callbacks: Exposed through Oculus.Platform.Platform
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internal static void SetNotificationCallback<T>(Message.MessageType type, Message<T>.Callback callback)
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{
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if (callback == null) {
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throw new Exception ("Cannot provide a null notification callback.");
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}
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notificationCallbacks[type] = new RequestCallback<T>(callback);
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if (type == Message.MessageType.Notification_Room_InviteAccepted)
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{
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FlushRoomInviteNotificationQueue();
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}
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}
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internal static void SetNotificationCallback(Message.MessageType type, Message.Callback callback)
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{
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if (callback == null) {
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throw new Exception ("Cannot provide a null notification callback.");
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}
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notificationCallbacks[type] = new RequestCallback(callback);
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}
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#endregion
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#region Adding and running request handlers
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internal static void AddRequest(Request request)
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{
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if (request.RequestID == 0)
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{
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// An early out error happened in the C SDK. Do not add it to the mapping of callbacks
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Debug.LogError("An unknown error occurred. Request failed.");
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return;
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}
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requestIDsToRequests[request.RequestID] = request;
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}
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internal static void RunCallbacks()
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{
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while (true)
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{
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var msg = Platform.Message.PopMessage();
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if (msg == null)
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{
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break;
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}
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HandleMessage(msg);
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}
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}
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internal static void RunLimitedCallbacks(uint limit)
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{
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for (var i = 0; i < limit; ++i)
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{
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var msg = Platform.Message.PopMessage();
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if (msg == null)
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{
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break;
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}
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HandleMessage(msg);
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}
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}
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internal static void OnApplicationQuit()
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{
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// Clear out all outstanding callbacks
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requestIDsToRequests.Clear();
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notificationCallbacks.Clear();
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}
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#endregion
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#region Callback Internals
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private static Dictionary<ulong, Request> requestIDsToRequests = new Dictionary<ulong, Request>();
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private static Dictionary<Message.MessageType, RequestCallback> notificationCallbacks = new Dictionary<Message.MessageType, RequestCallback>();
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private static bool hasRegisteredRoomInviteNotificationHandler = false;
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private static List<Message> pendingRoomInviteNotifications = new List<Message>();
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private static void FlushRoomInviteNotificationQueue() {
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hasRegisteredRoomInviteNotificationHandler = true;
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foreach (Message msg in pendingRoomInviteNotifications) {
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HandleMessage(msg);
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}
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pendingRoomInviteNotifications.Clear();
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}
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private class RequestCallback
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{
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private Message.Callback messageCallback;
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public RequestCallback() { }
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public RequestCallback(Message.Callback callback)
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{
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this.messageCallback = callback;
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}
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public virtual void HandleMessage(Message msg)
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{
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if (messageCallback != null)
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{
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messageCallback(msg);
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}
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}
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}
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private sealed class RequestCallback<T> : RequestCallback
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{
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private Message<T>.Callback callback;
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public RequestCallback(Message<T>.Callback callback)
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{
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this.callback = callback;
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}
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public override void HandleMessage(Message msg)
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{
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if (callback != null)
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{
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// We need to queue up GameInvites because the callback runner will be called before a handler has beeen set.
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if (!hasRegisteredRoomInviteNotificationHandler && msg.Type == Message.MessageType.Notification_Room_InviteAccepted)
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{
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pendingRoomInviteNotifications.Add(msg);
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return;
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}
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if (msg is Message<T>)
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{
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callback((Message<T>)msg);
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}
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else
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{
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Debug.LogError("Unable to handle message: " + msg.GetType());
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}
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}
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}
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}
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internal static void HandleMessage(Message msg)
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{
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Request request;
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if (msg.RequestID != 0 && requestIDsToRequests.TryGetValue(msg.RequestID, out request)) {
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try {
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request.HandleMessage(msg);
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} finally {
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requestIDsToRequests.Remove(msg.RequestID);
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}
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return;
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}
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RequestCallback callbackHolder;
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if (notificationCallbacks.TryGetValue(msg.Type, out callbackHolder))
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{
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callbackHolder.HandleMessage(msg);
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}
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}
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#endregion
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}
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}
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