/// <summary>
/// Creates an <see cref="Task{TResult}"/> wrapper for the specified <see cref="WWW"/>.
/// </summary>
/// <param name="request">The source web request.</param>
public static Task <T> ToTask <T>(this WWW request) where T : class
{
var result = new TaskCompletionSource <T>(request);
AsyncUtility.AddCompletionCallback(request, () => OnTaskCompleted(result, request));
return(result.Task);
}
/// <summary>
/// Creates an <see cref="Task{TResult}"/> wrapper for the Unity <see cref="AssetBundleRequest"/>.
/// </summary>
/// <param name="op">The source operation.</param>
public static Task <T> ToTask <T>(this AssetBundleRequest op) where T : UnityEngine.Object
{
var result = new TaskCompletionSource <T>(op);
AsyncUtility.AddCompletionCallback(op, () => result.TrySetResult(op.asset as T));
return(result.Task);
}
/// <summary>
/// Creates an <see cref="Task"/> wrapper for the specified <see cref="WWW"/>.
/// </summary>
/// <param name="request">The source web request.</param>
public static Task ToTask(this WWW request)
{
var result = new TaskCompletionSource <object>(request);
AsyncUtility.AddCompletionCallback(request, () => OnTaskCompleted(result, request));
return(result.Task);
}
/// <inheritdoc/>
public void OnCompleted(Action continuation)
{
#if UNITY_2017_2_OR_NEWER || UNITY_2018
// Starting with Unity 2017.2 there is AsyncOperation.completed event
_op.completed += o => continuation();
#else
AsyncUtility.AddCompletionCallback(_op, continuation);
#endif
}
/// <inheritdoc/>
protected override void OnStarted()
{
if (_www.isDone)
{
SetCompleted();
}
else
{
AsyncUtility.AddCompletionCallback(_www, SetCompleted);
}
}
/// <summary>
/// Creates an <see cref="Task"/> wrapper for the Unity <see cref="AsyncOperation"/>.
/// </summary>
/// <param name="op">The source operation.</param>
public static Task ToTask(this AsyncOperation op)
{
if (op.isDone)
{
return(Task.CompletedTask);
}
else
{
var result = new TaskCompletionSource <object>(op);
AsyncUtility.AddCompletionCallback(op, () => result.TrySetResult(null));
return(result.Task);
}
}
/// <inheritdoc/>
protected override void OnStarted()
{
if (_op.isDone)
{
OnSetCompleted(_op);
}
else
{
#if UNITY_2017_2_OR_NEWER || UNITY_2018
// Starting with Unity 2017.2 there is AsyncOperation.completed event
_op.completed += OnSetCompleted;
#else
AsyncUtility.AddCompletionCallback(_op, () => OnSetCompleted(_op));
#endif
}
}
/// <inheritdoc/>
protected override void OnStarted()
{
if (_request.isDone)
{
SetCompleted();
}
else if (_request.isModifiable)
{
#if UNITY_2017_2_OR_NEWER || UNITY_2018
_op = _request.SendWebRequest();
#else
_op = _request.Send();
#endif
AsyncUtility.AddCompletionCallback(_op, SetCompleted);
}
}
/// <inheritdoc/>
public void OnCompleted(Action continuation)
{
AsyncUtility.AddCompletionCallback(_op, continuation);
}