private void SetSelectedButton(AppMenuButton previous, AppMenuButton value)
{
if (previous != null)
{
this.IsOpen = this.DisplayMode == SplitViewDisplayMode.CompactInline && this.IsOpen;
}
if (previous?.IsChecked ?? previous != value)
{
previous?.RaiseUnselected();
}
this.navButtons.Where(x => x.Value != value).ForEach(x => { x.Value.IsChecked = false; });
if (this.areAppMenuButtonsLoaded && value?.Page != null)
{
if (this.NavigationService.CurrentPageType == value.Page)
{
// Want to make sure the item is selected
value.IsChecked = value.ButtonType == AppMenuButtonType.Toggle;
return;
}
var navigated = this.NavigationService.Navigate(value.Page, value.PageParameter);
if (!navigated)
{
this.SelectedButton = previous;
return;
}
this.IsOpen = this.DisplayMode == SplitViewDisplayMode.CompactInline && this.IsOpen;
if (value.ClearNavigationStack)
{
this.NavigationService.ClearNavigationHistory();
}
}
if (value != null)
{
value.IsChecked = (value.ButtonType == AppMenuButtonType.Toggle);
if (previous != value)
{
value.RaiseSelected();
}
}
}
private void ExecutePageNavigation(AppMenuButton menuButton)
{
if (menuButton == null)
{
throw new NullReferenceException("CommandParameter is not set");
}
if (menuButton.ButtonType == AppMenuButtonType.Command)
{
menuButton.Command?.Execute(menuButton.CommandParameter);
return;
}
if (menuButton.Page != null)
{
this.SelectedButton = menuButton;
}
}
