/// <summary>
/// Invoked whenever application code or internal processes (such as a rebuilding
/// layout pass) call <see cref="OnApplyTemplate"/>. In simplest terms, this means the method
/// is called just before a UI element displays in an application. Override this
/// method to influence the default post-template logic of a class.
/// </summary>
protected override void OnApplyTemplate()
{
m_root = this.GetTemplateChild(PART_ROOT) as UIElement;
m_scroller = this.GetTemplateChild(PART_SCROLLER) as ScrollViewer;
m_scrollerContent = this.GetTemplateChild(PART_SCROLLER_CONTENT) as UIElement;
m_refreshIndicatorContainer = this.GetTemplateChild(PART_REFRESH_INDICATOR) as FrameworkElement;
m_defaultRefreshIndicatorTextBlock = this.GetTemplateChild(PART_DEFAULT_REFRESH_INDICATOR_CONTENT) as TextBlock;
if (m_root != null &&
m_scroller != null &&
m_scrollerContent != null &&
m_refreshIndicatorContainer != null)
{
m_scroller.DirectManipulationStarted += Scroller_DirectManipulationStarted;
m_scroller.DirectManipulationCompleted += Scroller_DirectManipulationCompleted;
m_scroller.ViewChanged += Scroller_ViewChanged;
m_scroller.AddHandler(UIElement.PointerPressedEvent, new PointerEventHandler(Scroller_PointerPressed), true);
// In AutoRefresh mode, zoom factors smaller or larger than 1.0 are not supported.
if (this.AutoRefresh)
{
m_scroller.MinZoomFactor = 1.0f;
m_scroller.MaxZoomFactor = 1.0f;
m_scroller.ZoomMode = ZoomMode.Disabled;
}
m_refreshIndicatorContainer.SizeChanged += RefreshIndicatorContainer_SizeChanged;
}
if (m_defaultRefreshIndicatorTextBlock != null)
{
m_defaultRefreshIndicatorTextBlock.Visibility = this.RefreshIndicatorContent == null ? Visibility.Visible : Visibility.Collapsed;
}
base.OnApplyTemplate();
}
/// <summary>
/// Builds the visual tree for the <see cref="T:System.Windows.Controls.ListBox"/>
/// control when a new template is applied.
/// </summary>
protected override void OnApplyTemplate()
{
base.OnApplyTemplate();
if (ElementScrollViewer != null)
{
// ElementScrollViewer.MouseMove -= viewer_MouseMove;
ElementScrollViewer.DragEnter -= ElementScrollViewer_DragEnter;
//ElementScrollViewer.ManipulationStarted -= ElementScrollViewer_ManipulationStarted;
//ElementScrollViewer.ManipulationCompleted -= viewer_ManipulationCompleted;
ElementScrollViewer.RemoveHandler(ManipulationStartedEvent, new EventHandler<ManipulationStartedEventArgs>(this.ElementScrollViewer_ManipulationStarted));
ElementScrollViewer.RemoveHandler(ManipulationCompletedEvent, new EventHandler<ManipulationCompletedEventArgs>(this.viewer_ManipulationCompleted));
}
ElementScrollViewer = GetTemplateChild("ScrollViewer") as Windows.UI.Xaml.Controls.ScrollViewer;
if (ElementScrollViewer != null)
{
ElementScrollViewer.DragEnter += ElementScrollViewer_DragEnter;
//ElementScrollViewer.MouseMove += viewer_MouseMove;
//ElementScrollViewer.ManipulationStarted += ElementScrollViewer_ManipulationStarted;
//ElementScrollViewer.ManipulationCompleted += viewer_ManipulationCompleted;
ElementScrollViewer.AddHandler(ManipulationStartedEvent, new EventHandler<ManipulationStartedEventArgs>(this.ElementScrollViewer_ManipulationStarted), true);
ElementScrollViewer.AddHandler(ManipulationCompletedEvent, new EventHandler<ManipulationCompletedEventArgs>(this.viewer_ManipulationCompleted), true);
}
ElementRelease = GetTemplateChild("ReleaseElement") as UIElement;
StateDescription = GetTemplateChild("StateDescription") as TextBlock;
UpdateDescription = GetTemplateChild("UpdateDescription") as TextBlock;
ChangeVisualState(RefreshState.Pulling, false);
//GoToState("Pulling", false);
}
