/// <summary>
/// Register callbacks in order to handle VLC dialogs.
/// LibVLC 3.0.0 and later.
/// </summary>
/// <param name="error">Called when an error message needs to be displayed.</param>
/// <param name="login">Called when a login dialog needs to be displayed.
/// You can interact with this dialog by calling Dialog.PostLogin() to post an answer or Dialog.Dismiss() to cancel this dialog.</param>
/// <param name="question">Called when a question dialog needs to be displayed.
/// You can interact with this dialog by calling Dialog.PostLogin() to post an answer or Dialog.Dismiss() to cancel this dialog.</param>
/// <param name="displayProgress">Called when a progress dialog needs to be displayed.</param>
/// <param name="updateProgress">Called when a progress dialog needs to be updated.</param>
public void SetDialogHandlers(DisplayError error, DisplayLogin login, DisplayQuestion question,
DisplayProgress displayProgress, UpdateProgress updateProgress)
{
if (error == null)
{
throw new ArgumentNullException(nameof(error));
}
if (login == null)
{
throw new ArgumentNullException(nameof(login));
}
if (question == null)
{
throw new ArgumentNullException(nameof(question));
}
if (displayProgress == null)
{
throw new ArgumentNullException(nameof(displayProgress));
}
if (updateProgress == null)
{
throw new ArgumentNullException(nameof(updateProgress));
}
var dialogCbs = new DialogCallbacks(
displayError: (data, title, text) => error(title, text),
displayLogin: (data, id, title, text, username, store) =>
{
var cts = new CancellationTokenSource();
var dlg = new Dialog(new DialogId(id));
_cts[id] = cts;
login(dlg, title, text, username, store, cts.Token);
},
displayQuestion: (data, id, title, text, type, cancelText, firstActionText, secondActionText) =>
{
var cts = new CancellationTokenSource();
var dlg = new Dialog(new DialogId(id));
_cts[id] = cts;
question(dlg, title, text, type, cancelText, firstActionText, secondActionText, cts.Token);
},
displayProgress: (data, id, title, text, indeterminate, position, cancelText) =>
{
var cts = new CancellationTokenSource();
var dlg = new Dialog(new DialogId(id));
_cts[id] = cts;
displayProgress(dlg, title, text, indeterminate, position, cancelText, cts.Token);
},
cancel: (data, id) =>
{
if (_cts.TryGetValue(id, out var token))
{
token.Cancel();
_cts.Remove(id);
}
},
updateProgress: (data, id, position, text) =>
{
var dlg = new Dialog(new DialogId(id));
updateProgress(dlg, position, text);
});
_dialogCbsPtr = Marshal.AllocHGlobal(MarshalUtils.SizeOf(dialogCbs));
Marshal.StructureToPtr(dialogCbs, _dialogCbsPtr, true);
Native.LibVLCDialogSetCallbacks(NativeReference, _dialogCbsPtr, IntPtr.Zero);
}
