private void ShowLoadingExperience()
{
_hasShownLoadingScreen = true;
if (_progressBar != null)
{
/*var binding = new Binding("IsLoading");
* binding.Source = GlobalLoading.Instance;
* binding.Converter = new InvertConverter();
* _progressBar.SetBinding(ProgressBar.IsIndeterminateProperty, binding);*/
_progressBar.IsIndeterminate = true;
}
if (_loadingGrid != null)
{
// Not sure what this nice phone-similar effect costs yet...
TransformYAnimator ta = null;
TransformYAnimator.EnsureAnimator(_loadingGrid, ref ta);
if (ta != null)
{
ta.GoTo(50, new Duration(TimeSpan.Zero));
ta.GoTo(0, TransitionDuration, new QuarticEase());
}
MyOpacityAnimator oa = null;
MyOpacityAnimator.EnsureAnimator(_loadingGrid, ref oa);
if (oa != null)
{
oa.GoTo(1, TransitionDuration);
}
else
{
_loadingGrid.Opacity = 1;
}
}
}
public override void OnApplyTemplate()
{
if (_ya != null)
{
_ya = null;
}
if (_pivotItem == null)
{
DependencyObject d = Parent;
while (d != null && !(d is PivotItem))
{
d = VisualTreeHelper.GetParent(d);
}
_pivotItem = d as PivotItem;
}
if (_pivotItem != null && _pivot == null)
{
DependencyObject d = _pivotItem;
while (d != null && !(d is Pivot))
{
d = VisualTreeHelper.GetParent(d);
}
_pivot = d as Pivot;
if (_pivot != null)
{
_pivot.UnloadingPivotItem += OnUnloadingPivotItem;
//_pivot.SelectionChanged += OnPivotSelectionChanged;
}
}
base.OnApplyTemplate();
_image = GetTemplateChild("_image") as Image;
_grid = GetTemplateChild("_grid") as Grid;
TransformYAnimator.EnsureAnimator(_grid, ref _ya);
Debug.Assert(_ya != null);
if (_image != null && ImageSource != null)
{
UpdateImageSource();
}
UpdatePosition(false);
}
public override void OnApplyTemplate()
{
if (_scrollViewer != null && IsPullToRefreshEnabled)
{
_scrollViewer.ManipulationStarted -= OnManipulationStarted;
}
if (_top != null)
{
_top.MouseLeftButtonDown -= OnJumpToTop;
}
if (_bottom != null)
{
_bottom.MouseLeftButtonDown -= OnJumpToBottom;
}
_ta = null;
base.OnApplyTemplate();
if (IsPullToRefreshEnabled)
{
SizeChanged += OnSizeChanged;
}
_scrollViewer = MoreVisualTreeExtensions.FindFirstChildOfType <ScrollViewer>(this);
if (null == _scrollViewer)
{
return;
// Must be at design time.
//throw new NotSupportedException("Control Template must include a ScrollViewer.");
}
Dispatcher.BeginInvoke(() =>
{
_top = VisualTreeExtensions.GetVisualDescendants(_scrollViewer).OfType <Rectangle>().Where(b => b.Name == TopJumpName).FirstOrDefault();
_bottom = VisualTreeExtensions.GetVisualDescendants(_scrollViewer).OfType <Rectangle>().Where(b => b.Name == BottomJumpName).FirstOrDefault();
if (_top != null)
{
_top.MouseLeftButtonUp += OnJumpToTop;
}
if (_bottom != null)
{
_bottom.MouseLeftButtonUp += OnJumpToBottom;
}
});
_header = GetTemplateChild("Header") as ContentPresenter;
if (_header != null)
{
TransformYAnimator.EnsureAnimator(_header, ref _ta);
}
if (IsPullToRefreshEnabled)
{
_scrollViewer.ManipulationStarted += OnManipulationStarted;
}
Dispatcher.BeginInvoke(() =>
{
int i = 0;
UIElement uie = Parent as UIElement;
while (i < 8 && uie != null && _piv == null)
{
uie = VisualTreeHelper.GetParent(uie) as UIElement;
_piv = uie as LoadingPivotItem;
}
var implroot = VisualTreeHelper.GetChild(_scrollViewer, 0) as FrameworkElement;
if (implroot != null)
{
VisualStateGroup group = FindVisualState(implroot, "ScrollStates");
if (group != null)
{
group.CurrentStateChanging += OnScrollingStateChanging;
// should probably disconnect too
}
}
this.InvokeOnLayoutUpdated(Bump);
});
}
