protected override void OnApplyTemplate()
{
base.OnApplyTemplate();
MenuItemsScrollViewer = (ScrollViewer)GetTemplateChild("MenuItemsScrollViewer");
PaneContentGrid = (Grid)GetTemplateChild("PaneContentGrid");
RootSplitView = (SplitView)GetTemplateChild("RootSplitView");
TopNavArea = ((StackPanel)GetTemplateChild("TopNavArea"));
TopNavMenuItemsHost = ((ItemsRepeater)GetTemplateChild("TopNavMenuItemsHost"));
ContentPaneTopPadding = (Grid)GetTemplateChild("ContentPaneTopPadding");
PaneToggleButtonGrid = (Grid)GetTemplateChild("PaneToggleButtonGrid");
ButtonHolderGrid = (Grid)GetTemplateChild("ButtonHolderGrid");
OnApplyTemplateCore();
OnApplyTemplateFinished?.Invoke(this, EventArgs.Empty);
}
protected override void OnApplyTemplate()
{
base.OnApplyTemplate();
AppTitleBar = (FrameworkElement)GetTemplateChild("AppTitleBar");
AppFontIcon = (Image)GetTemplateChild("AppFontIcon");
AppTitle = (TextBlock)GetTemplateChild("AppTitle");
OnApplyTemplateFinished?.Invoke(this, EventArgs.Empty);
UpdateAppTitleBarMargins();
AppFontIcon.ImageOpened += OnImageOpened;
AppFontIcon.ImageFailed += OnImageFailed;
SetWindowTitle(_windowTitle);
}
protected override void OnApplyTemplate()
{
base.OnApplyTemplate();
MenuItemsScrollViewer = (ScrollViewer)GetTemplateChild("MenuItemsScrollViewer");
PaneContentGrid = (Grid)GetTemplateChild("PaneContentGrid");
RootSplitView = (SplitView)GetTemplateChild("RootSplitView");
TopNavArea = ((StackPanel)GetTemplateChild("TopNavArea"));
TopNavMenuItemsHost = ((ItemsRepeater)GetTemplateChild("TopNavMenuItemsHost"));
ContentPaneTopPadding = (Grid)GetTemplateChild("ContentPaneTopPadding");
PaneToggleButtonGrid = (Grid)GetTemplateChild("PaneToggleButtonGrid");
ButtonHolderGrid = (Grid)GetTemplateChild("ButtonHolderGrid");
ContentGrid = (Grid)GetTemplateChild("ContentGrid");
NavigationViewBackButton = (Button)GetTemplateChild("NavigationViewBackButton");
TogglePaneButton = (Button)GetTemplateChild("TogglePaneButton");
NavigationViewCloseButton = (Button)GetTemplateChild("NavigationViewCloseButton");
PaneHeaderCloseButtonColumn = (ColumnDefinition)GetTemplateChild("PaneHeaderCloseButtonColumn");
PaneHeaderToggleButtonColumn = (ColumnDefinition)GetTemplateChild("PaneHeaderToggleButtonColumn");
PaneCustomContentBorder = (ContentControl)GetTemplateChild("PaneCustomContentBorder");
ItemsContainerRow = (RowDefinition)GetTemplateChild("ItemsContainerRow");
PaneContentGridToggleButtonRow = (RowDefinition)GetTemplateChild("PaneContentGridToggleButtonRow");
PaneHeaderContentBorderRow = (RowDefinition)GetTemplateChild("PaneHeaderContentBorderRow");
UpdateNavigationBackButtonSize();
UpdateNavigationViewContentMargin();
UpdateNavigationViewBackButtonMargin();
UpdateNavigationViewButtonHolderGridMargin();
OnApplyTemplateCore();
OnApplyTemplateFinished?.Invoke(this, EventArgs.Empty);
TogglePaneButton.RegisterPropertyChangedCallback(Button.HeightProperty, (_, __) => UpdatePaneToggleButtonSize());
TogglePaneButton.RegisterPropertyChangedCallback(Button.WidthProperty, (_, __) => UpdatePaneToggleButtonSize());
NavigationViewBackButton.RegisterPropertyChangedCallback(Button.HeightProperty, (_, __) => UpdateNavigationBackButtonSize());
NavigationViewBackButton.RegisterPropertyChangedCallback(Button.WidthProperty, (_, __) => UpdateNavigationBackButtonSize());
NavigationViewCloseButton.RegisterPropertyChangedCallback(Button.HeightProperty, (_, __) => UpdateNavigationBackButtonSize());
NavigationViewCloseButton.RegisterPropertyChangedCallback(Button.WidthProperty, (_, __) => UpdateNavigationBackButtonSize());
// These columns create a left padding on the PaneHeader
// So this code just removes that padding
PaneHeaderCloseButtonColumn.RegisterPropertyChangedCallback(ColumnDefinition.WidthProperty, (_, __) => PaneHeaderCloseButtonColumn.Width = new WGridLength(0));
PaneHeaderToggleButtonColumn.RegisterPropertyChangedCallback(ColumnDefinition.WidthProperty, (_, __) => PaneHeaderToggleButtonColumn.Width = new WGridLength(0));
PaneHeaderToggleButtonColumn.Width = new WGridLength(0);
PaneHeaderCloseButtonColumn.Width = new WGridLength(0);
// When the NavigationView is in locked mode the min height on the PaneHeader row gets set to 40
// Which creates space between the title bar and the top of the flyout content
PaneContentGridToggleButtonRow.MinHeight = 0;
PaneContentGridToggleButtonRow.RegisterPropertyChangedCallback(RowDefinition.MinHeightProperty, (_, __) =>
PaneContentGridToggleButtonRow.MinHeight = 0);
PaneHeaderContentBorderRow.MinHeight = 0;
PaneHeaderContentBorderRow.RegisterPropertyChangedCallback(RowDefinition.MinHeightProperty, (_, __) =>
PaneHeaderContentBorderRow.MinHeight = 0);
// WinUI has this set to -1,3,-1,3 but I'm not really sure why
// It causes the content to not be flush up against the title bar
PaneContentGrid.Margin = new WThickness(-1, 0, -1, 0);
UpdateMenuItemsContainerHeight();
}