/// <summary>
/// Instructs the progress indicator to hide itself.
/// </summary>
/// <remarks>If the indicator is visible and has been showing for at least a minimal amount of time, it will be hidden
/// immediately. If not, it will hide itself once a the minimum display time has elapsed.</remarks>
public void Hide()
{
if (IsVisible && !_cancelled && (DateTime.Now < _launchTime.AddSeconds(MinDisplayTime)))
{
if (_timer != null)
{
_timer.Tick -= ShowProgressIndicator;
_timer.Tick -= HideProgressIndicator;
_timer.Stop();
}
_timer = new OSDispatcherTimer();
_timer.Tick += HideProgressIndicator;
_timer.Interval = _launchTime.AddSeconds(MinDisplayTime) - DateTime.Now;
_timer.Start();
}
else
{
HideProgressIndicator(null, null);
}
var application = SingleInstanceApplication.Instance;
if (application != null)
{
application.IsBusy = false;
}
CommandManager.InvalidateRequerySuggested();
}
private void ShowProgressIndicator(object sender, EventArgs e)
{
_launchTime = DateTime.Now;
IsVisible = true;
if (_timer != null)
{
_timer.Tick -= ShowProgressIndicator;
_timer.Tick -= HideProgressIndicator;
_timer.Stop();
}
_timer = null;
}
private ProgressIndicator(ProgressIndicatorViewModel viewModel, Gtk.Window owner)
: base(Gtk.WindowType.Toplevel)
{
#if ENABLE_OVERLAY
_overlay = new ProgressIndicatorOverlay(owner);
#endif // ENABLE_OVERLAY
_pulseTimer = new OSDispatcherTimer();
_pulseTimer.Interval = System.TimeSpan.FromMilliseconds(TimerTickMilliseconds);
_pulseTimer.Tick += Pulse;
DataContext = viewModel;
viewModel.PropertyChanged += HandlePropertyChanged;
this.Build();
this.DefaultHeight = -1;
_cancel.Label = ProgressIndicatorViewModel.Cancel;
}
private void HideProgressIndicator(object sender, EventArgs e)
{
_cancelled = false;
_launchTime = DateTime.MinValue;
IsVisible = false;
if (_timer != null)
{
_timer.Stop();
}
_timer = null;
_task = null;
var application = SingleInstanceApplication.Instance;
if ((application != null) && (application.MainWindow != null))
{
PlatformOnHide(application);
}
CommandManager.InvalidateRequerySuggested();
}
/// <summary>
/// Instructs the progress indicator that it should display itself. It will appear after a brief delay.
/// </summary>
/// <param name="task">The task associated with the progress indicator.</param>
/// <remarks>The progress indicator will display after a brief delay, and will display for a minimum amount of time once shown.
/// If a task completes quickly, this prevents the progress indicator from appearing only to disappear almost instantaneously.
/// Similarly, once the indicator becomes visible, it will remain visible for a minimum amount of time so as to be less jarring.</remarks>
public void Show(AsyncTaskWithProgress task)
{
var application = SingleInstanceApplication.Instance;
if (application != null)
{
application.IsBusy = true;
_task = task;
_cancelled = false;
if (!IsVisible && (_timer == null) && (DisplayDelay > 0))
{
PlatformOnShow(application);
_timer = new OSDispatcherTimer();
_timer.Tick += ShowProgressIndicator;
_timer.Interval = TimeSpan.FromSeconds(DisplayDelay);
_timer.Start();
}
else if (!(DisplayDelay < 0))
{
PlatformOnShow(application);
ShowProgressIndicator(this, EventArgs.Empty);
}
}
}
