internal void SetShellContext(ShellRenderer context)
{
if (ShellContext != null)
{
((IShellController)ShellContext.Shell).RemoveAppearanceObserver(this);
((IShellController)ShellContext.Shell).RemoveFlyoutBehaviorObserver(this);
}
ShellContext = context;
if (ShellContext != null)
{
((IShellController)ShellContext.Shell).AddFlyoutBehaviorObserver(this);
((IShellController)ShellContext.Shell).AddAppearanceObserver(this, ShellContext.Shell);
UpdateHeaderInsets();
}
}
public ShellItemRenderer(ShellRenderer shellContext)
{
System.Maui.Shell.VerifyShellUWPFlagEnabled(nameof(ShellItemRenderer));
_ = shellContext ?? throw new ArgumentNullException(nameof(shellContext));
ShellContext = shellContext;
RowDefinitions.Add(new UwpRowDefinition()
{
Height = new UwpGridLength(1, UwpGridUnitType.Auto)
});
RowDefinitions.Add(new UwpRowDefinition()
{
Height = new UwpGridLength(1, UwpGridUnitType.Star)
});
RowDefinitions.Add(new UwpRowDefinition()
{
Height = new UwpGridLength(1, UwpGridUnitType.Auto)
});
_Title = new TextBlock()
{
Style = Resources["SubtitleTextBlockStyle"] as UwpStyle,
VerticalAlignment = VerticalAlignment.Center,
TextTrimming = TextTrimming.CharacterEllipsis,
TextWrapping = TextWrapping.NoWrap
};
_HeaderArea = new UwpGrid()
{
Height = 40, Padding = new UwpThickness(10, 0, 10, 0)
};
_HeaderArea.ColumnDefinitions.Add(new UwpColumnDefinition()
{
Width = new UwpGridLength(1, UwpGridUnitType.Star)
});
_HeaderArea.ColumnDefinitions.Add(new UwpColumnDefinition()
{
Width = new UwpGridLength(1, UwpGridUnitType.Auto)
});
_HeaderArea.Children.Add(_Title);
Children.Add(_HeaderArea);
_Toolbar = new ItemsControl()
{
ItemTemplate = UwpApplication.Current.Resources["ShellToolbarItemTemplate"] as UwpDataTemplate,
ItemsPanel = UwpApplication.Current.Resources["ShellToolbarItemsPanelTemplate"] as ItemsPanelTemplate,
};
SetColumn(_Toolbar, 1);
_HeaderArea.Children.Add(_Toolbar);
SectionRenderer = shellContext.CreateShellSectionRenderer();
SetRow(SectionRenderer, 1);
Children.Add(SectionRenderer);
_BottomBar = new UwpGrid()
{
HorizontalAlignment = HorizontalAlignment.Center
};
_BottomBarArea = new Border()
{
Child = _BottomBar
};
SetRow(_BottomBarArea, 2);
Children.Add(_BottomBarArea);
}