public WeakTimer(IWeakTimerSubscriber subscriber)
{
_subscriber = new WeakReference<IWeakTimerSubscriber>(subscriber);
_timer = new DispatcherTimer();
_timer.Tick += delegate { OnTick(); };
_timer.Start();
}
public TextPresenter()
{
this.caretTimer = new DispatcherTimer();
this.caretTimer.Interval = TimeSpan.FromMilliseconds(500);
this.caretTimer.Tick += this.CaretTimerTick;
this.canScrollHorizontally = this.GetObservable(TextWrappingProperty)
.Select(x => x == TextWrapping.NoWrap);
Observable.Merge(
this.GetObservable(SelectionStartProperty),
this.GetObservable(SelectionEndProperty))
.Subscribe(_ => this.InvalidateFormattedText());
this.GetObservable(TextPresenter.CaretIndexProperty)
.Subscribe(this.CaretIndexChanged);
}
/// <summary>
/// Starts a new timer.
/// </summary>
/// <param name="action">
/// The method to call on timer tick. If the method returns false, the timer will stop.
/// </param>
/// <param name="interval">The interval at which to tick.</param>
/// <param name="priority">The priority to use.</param>
/// <returns>An <see cref="IDisposable"/> used to cancel the timer.</returns>
public static IDisposable Run(Func<bool> action, TimeSpan interval, DispatcherPriority priority = DispatcherPriority.Normal)
{
var timer = new DispatcherTimer(priority);
timer.Interval = interval;
timer.Tick += (s, e) =>
{
if (!action())
{
timer.Stop();
}
};
timer.Start();
return Disposable.Create(() => timer.Stop());
}
/// <summary>
/// Runs a method once, after the specified interval.
/// </summary>
/// <param name="action">
/// The method to call after the interval has elapsed.
/// </param>
/// <param name="interval">The interval after which to call the method.</param>
/// <param name="priority">The priority to use.</param>
/// <returns>An <see cref="IDisposable"/> used to cancel the timer.</returns>
public static IDisposable RunOnce(
Action action,
TimeSpan interval,
DispatcherPriority priority = DispatcherPriority.Normal)
{
var timer = new DispatcherTimer(priority) { Interval = interval };
timer.Tick += (s, e) =>
{
action();
timer.Stop();
};
timer.Start();
return Disposable.Create(() => timer.Stop());
}