public override void OnApplyTemplate()
{
// Stop UpdateVisualState before template is applied. Otherwise the visual may not the same as we expect
m_appliedTemplate = false;
base.OnApplyTemplate();
// Find selection indicator
// Retrieve pointers to stable controls
IControlProtected controlProtected = this;
m_helper.Init(controlProtected);
if (GetTemplateChildT <Grid>(c_rootGrid, controlProtected) is { } rootGrid)
{
m_rootGrid = rootGrid;
if (FlyoutBase.GetAttachedFlyout(rootGrid) is { } flyoutBase)
{
flyoutBase.Closing += OnFlyoutClosing;
}
}
if (GetTemplateChildT <NavigationViewItemPresenter>(c_navigationViewItemPresenterName, controlProtected) is { } presenter)
{
m_navigationViewItemPresenter = presenter;
presenter.MouseDown += OnPresenterPointerPressed;
presenter.MouseUp += OnPresenterPointerReleased;
presenter.MouseEnter += OnPresenterPointerEntered;
presenter.MouseLeave += OnPresenterPointerCanceled;
presenter.LostMouseCapture += OnPresenterPointerCaptureLost;
}
public static WinRTReturn GetTemplateChildT <WinRTReturn>(string childName, IControlProtected controlProtected) where WinRTReturn : DependencyObject
{
DependencyObject childAsDO = controlProtected.GetTemplateChild(childName);
if (childAsDO != null)
{
return(childAsDO as WinRTReturn);
}
return(null);
}
public override void OnApplyTemplate()
{
// Stop UpdateVisualState before template is applied. Otherwise the visual may not the same as we expect
m_appliedTemplate = false;
base.OnApplyTemplate();
// Find selection indicator
// Retrieve pointers to stable controls
IControlProtected controlProtected = this;
m_helper.Init(controlProtected);
if (GetTemplateChildT <Grid>(c_rootGrid, controlProtected) is { } rootGrid)
{
m_rootGrid = rootGrid;
if (FlyoutBase.GetAttachedFlyout(rootGrid) is { } flyoutBase)
{
flyoutBase.Closing += OnFlyoutClosing;
}
}
UIElement presenter;
{
presenter = init();
UIElement init()
{
if (GetTemplateChildT <NavigationViewItemPresenter>(c_navigationViewItemPresenterName, controlProtected) is { } presenter)
{
m_navigationViewItemPresenter = presenter;
return(presenter);
}
// We don't have a presenter, so we are our own presenter.
return(this);
}
}
presenter.MouseDown += OnPresenterPointerPressed;
presenter.MouseUp += OnPresenterPointerReleased;
presenter.MouseEnter += OnPresenterPointerEntered;
presenter.MouseLeave += OnPresenterPointerCanceled;
presenter.LostMouseCapture += OnPresenterPointerCaptureLost;
m_toolTip = GetTemplateChildT <ToolTip>("ToolTip", controlProtected);
if (GetSplitView() is { } splitView)
{
splitView.IsPaneOpenChanged += OnSplitViewPropertyChanged;
splitView.DisplayModeChanged += OnSplitViewPropertyChanged;
splitView.CompactPaneLengthChanged += OnSplitViewPropertyChanged;
UpdateCompactPaneLength();
UpdateIsClosedCompact();
}
// Retrieve reference to NavigationView
if (GetNavigationView() is { } nvImpl)
{
if (GetTemplateChildT <ItemsRepeater>(c_repeater, controlProtected) is { } repeater)
{
m_repeater = repeater;
// Primary element setup happens in NavigationView
repeater.ElementPrepared += nvImpl.OnRepeaterElementPrepared;
repeater.ElementClearing += nvImpl.OnRepeaterElementClearing;
repeater.ItemTemplate = nvImpl.GetNavigationViewItemsFactory();
repeater.AlwaysInvalidateMeasureOnChildDesiredSizeChanged = true;
}
UpdateRepeaterItemsSource();
}
if (GetTemplateChildT <FlyoutBase>(c_childrenFlyout, controlProtected) is { } childrenFlyout)
{
childrenFlyout.Offset = 0;
}
m_flyoutContentGrid = GetTemplateChildT <Grid>(c_flyoutContentGrid, controlProtected);
m_appliedTemplate = true;
UpdateItemIndentation();
UpdateVisualStateNoTransition();
ReparentRepeater();
// We dont want to update the repeater visibilty during OnApplyTemplate if NavigationView is in a mode when items are shown in a flyout
if (!ShouldRepeaterShowInFlyout())
{
ShowHideChildren();
}
/*
* var visual = ElementCompositionPreview.GetElementVisual(this);
* NavigationView.CreateAndAttachHeaderAnimation(visual);
*/
}
public override void OnApplyTemplate()
{
// Stop UpdateVisualState before template is applied. Otherwise the visuals may be unexpected
m_appliedTemplate = false;
UnhookEventsAndClearFields();
base.OnApplyTemplate();
// Find selection indicator
// Retrieve pointers to stable controls
IControlProtected controlProtected = this;
m_helper.Init(controlProtected);
if (GetTemplateChildT <Grid>(c_rootGrid, controlProtected) is { } rootGrid)
{
m_rootGrid = rootGrid;
if (FlyoutBase.GetAttachedFlyout(rootGrid) is { } flyoutBase)
{
m_flyoutClosingRevoker = new FlyoutBaseClosingRevoker(flyoutBase, OnFlyoutClosing);
}
}
HookInputEvents(controlProtected);
IsEnabledChanged += OnIsEnabledChanged;
m_toolTip = GetTemplateChildT <ToolTip>("ToolTip", controlProtected);
if (GetSplitView() is { } splitView)
{
splitView.IsPaneOpenChanged += OnSplitViewPropertyChanged;
splitView.DisplayModeChanged += OnSplitViewPropertyChanged;
splitView.CompactPaneLengthChanged += OnSplitViewPropertyChanged;
UpdateCompactPaneLength();
UpdateIsClosedCompact();
}
// Retrieve reference to NavigationView
if (GetNavigationView() is { } nvImpl)
{
if (GetTemplateChildT <ItemsRepeater>(c_repeater, controlProtected) is { } repeater)
{
m_repeater = repeater;
// Primary element setup happens in NavigationView
m_repeaterElementPreparedRevoker = new ItemsRepeaterElementPreparedRevoker(repeater, nvImpl.OnRepeaterElementPrepared);
m_repeaterElementClearingRevoker = new ItemsRepeaterElementClearingRevoker(repeater, nvImpl.OnRepeaterElementClearing);
repeater.ItemTemplate = nvImpl.GetNavigationViewItemsFactory();
repeater.AlwaysInvalidateMeasureOnChildDesiredSizeChanged = true;
}
UpdateRepeaterItemsSource();
}
if (GetTemplateChildT <FlyoutBase>(c_childrenFlyout, controlProtected) is { } childrenFlyout)
{
childrenFlyout.Offset = 0;
}
m_flyoutContentGrid = GetTemplateChildT <Grid>(c_flyoutContentGrid, controlProtected);
m_appliedTemplate = true;
UpdateItemIndentation();
UpdateVisualStateNoTransition();
ReparentRepeater();
// We dont want to update the repeater visibilty during OnApplyTemplate if NavigationView is in a mode when items are shown in a flyout
if (!ShouldRepeaterShowInFlyout())
{
ShowHideChildren();
}
/*
* var visual = ElementCompositionPreview.GetElementVisual(this);
* NavigationView.CreateAndAttachHeaderAnimation(visual);
*/
}
