public static EToolbar SetTVTabBarWithTitleStyle(this EToolbar toolbar)
{
if (DeviceInfo.Idiom != DeviceIdiom.TV)
{
Log.Error($"TabBarWithTitleStyle is only supported on DeviceIdiom.TV : {0}", DeviceInfo.Idiom);
return(toolbar);
}
toolbar.Style = ThemeConstants.Toolbar.Styles.TV.TabbarWithTitle;
return(toolbar);
}
protected override void Dispose(bool disposing)
{
if (disposing)
{
Element.PagesChanged -= OnElementPagesChanged;
if (_outterLayout != null)
{
_outterLayout.Unrealize();
_outterLayout = null;
}
if (_toolbar != null)
{
_toolbar.Selected -= OnToolbarItemSelected;
_scroller.PageScrolled -= OnItemPageScrolled;
_toolbar.Unrealize();
_toolbar = null;
}
}
base.Dispose(disposing);
}
EToolbar GetBreadCrumbsBar()
{
EToolbar toolbar = new EToolbar(Forms.NativeParent)
{
ItemAlignment = 0,
Homogeneous = false,
ShrinkMode = ToolbarShrinkMode.Scroll
};
toolbar.SetNavigationBarStyle();
foreach (var p in Element.Navigation.NavigationStack)
{
string breadCrumb = p.OnThisPlatform().GetBreadCrumb();
if (!string.IsNullOrEmpty(breadCrumb))
{
EToolbarItem toolbarItem = toolbar.Append(breadCrumb);
toolbarItem.Selected += (s, e) =>
{
var copyOfStack = Element.Navigation.NavigationStack.Reverse().Skip(1);
foreach (var lp in copyOfStack)
{
if (lp == p)
{
break;
}
Element.Navigation.RemovePage(lp);
}
if (Element.Navigation.NavigationStack.Last() != p)
{
Element.Navigation.PopAsync();
}
};
}
}
return(toolbar);
}
public static EToolbar SetNavigationBarStyle(this EToolbar toolbar)
{
toolbar.Style = ThemeConstants.Toolbar.Styles.NavigationBar;
return(toolbar);
}
protected override void OnElementChanged(ElementChangedEventArgs <TabbedPage> e)
{
if (_toolbar == null)
{
//Create box that holds toolbar and selected content
_outterLayout = new Box(Forms.NativeParent)
{
AlignmentX = -1,
AlignmentY = -1,
WeightX = 1,
WeightY = 1,
IsHorizontal = false,
};
_outterLayout.Show();
//Create toolbar that is placed inside the _outterLayout
_toolbar = new EToolbar(Forms.NativeParent)
{
AlignmentX = -1,
WeightX = 1,
SelectionMode = ToolbarSelectionMode.Always,
};
if (DeviceInfo.Idiom == DeviceIdiom.Phone)
{
//Set ShrinkMode to Expand as defauly only for Mobile profile
_toolbar.ShrinkMode = ToolbarShrinkMode.Expand;
}
else if (DeviceInfo.Idiom == DeviceIdiom.TV)
{
//According to TV UX Guideline, toolbar style should be set to "tabbar_with_title" in case of TabbedPage only for TV profile.
_toolbar.SetTVTabBarWithTitleStyle();
}
_toolbar.Show();
//Add callback for Toolbar item selection
_toolbar.Selected += OnToolbarItemSelected;
_outterLayout.PackEnd(_toolbar);
_scroller = new Scroller(_outterLayout)
{
AlignmentX = -1,
AlignmentY = -1,
WeightX = 1,
WeightY = 1,
HorizontalPageScrollLimit = 1,
ScrollBlock = ScrollBlock.Vertical,
HorizontalScrollBarVisiblePolicy = ScrollBarVisiblePolicy.Invisible
};
_scroller.SetPageSize(1.0, 1.0);
_scroller.PageScrolled += OnItemPageScrolled;
_innerBox = new Box(Forms.NativeParent)
{
AlignmentX = -1,
AlignmentY = -1,
WeightX = 1,
WeightY = 1,
IsHorizontal = true,
};
_innerBox.SetLayoutCallback(OnInnerLayoutUpdate);
_scroller.SetContent(_innerBox);
_scroller.Show();
_outterLayout.PackEnd(_scroller);
SetNativeView(_outterLayout);
UpdateTitle();
}
if (e.OldElement != null)
{
e.OldElement.PagesChanged -= OnElementPagesChanged;
_isInitialized = false;
}
if (e.NewElement != null)
{
e.NewElement.PagesChanged += OnElementPagesChanged;
}
base.OnElementChanged(e);
}