/// <summary>
/// Navigates to the object that is represented by the specified route.
/// </summary>
/// <param name="route">The route of the object to navigate to.</param>
/// <param name="data">The data to pass with the navigation request.</param>
/// <param name="cancellationToken">The <see cref="CancellationToken"/> used to propagate notifications that the operation should be canceled.</param>
/// <returns>The <see cref="Task{TResult}"/> that represents the asynchronous operation.</returns>
public async Task <bool> NavigateAsync(string route, object data, CancellationToken cancellationToken = default)
{
if (UIThread.CheckAccess())
{
return(collection.Navigate(route, data));
}
return(await UIThread.InvokeAsync(() => collection.Navigate(route, data), DispatcherPriority.Normal, cancellationToken));
}
/// <summary>
/// Navigates to the object that is represented by the specified route.
/// </summary>
/// <param name="route">The route of the object to navigate to.</param>
/// <param name="data">The data to pass with the navigation request.</param>
/// <returns><c>true</c> if successfully navigated; otherwise, <c>false</c>.</returns>
public bool Navigate(string route, object data)
{
if (UIThread.CheckAccess())
{
return(collection.Navigate(route, data));
}
return(UIThread.Invoke(() => collection.Navigate(route, data), DispatcherPriority.Normal));
}
/// <summary>
/// Raises the <see cref="ICommand.CanExecuteChanged"/> event for the current <see cref="DelegateCommand{T}"/>.
/// </summary>
/// <param name="cancellationToken">The <see cref="CancellationToken"/> used to propagate notifications that the operation should be canceled.</param>
/// <returns>The <see cref="Task"/> that represents the asynchronous operation.</returns>
public async Task RaiseChangedAsync(CancellationToken cancellationToken = default)
{
if (UIThread.CheckAccess())
{
OnCanExecuteChanged();
return;
}
await UIThread.InvokeAsync(OnCanExecuteChanged, DispatcherPriority.Normal, cancellationToken);
}
/// <summary>
/// Raises the <see cref="ICommand.CanExecuteChanged"/> event for the current <see cref="DelegateCommand{T}"/>.
/// </summary>
public void RaiseChanged()
{
if (UIThread.CheckAccess())
{
OnCanExecuteChanged();
return;
}
UIThread.Invoke(OnCanExecuteChanged, DispatcherPriority.Normal);
}
/// <summary>
/// Raises the <see cref="ICommand.CanExecuteChanged"/> event for each <see cref="IDelegateCommand"/> in the specified sequence.
/// </summary>
/// <param name="commands">The sequence on whose <see cref="IDelegateCommand"/> elements to raise the event.</param>
public static void RaiseChanged(this IEnumerable <ICommand> commands)
{
Requires.NotNull(commands, nameof(commands));
List <IDelegateCommand> list = new List <IDelegateCommand>();
list.AddRange(commands.OfType <IDelegateCommand>());
if (list.Count > 0)
{
if (UIThread.CheckAccess())
{
RaiseChanged(list);
return;
}
UIThread.Invoke(() => RaiseChanged(list), DispatcherPriority.Normal);
}
}
