/// <summary>
/// Handles the element change event.
/// </summary>
/// <param name="e">Event arguments.</param>
protected override void OnElementChanged(ElementChangedEventArgs <ScrollView> e)
{
if (Control == null)
{
SetNativeControl(CreateNativeControl());
Control.Scrolled += OnScrolled;
_scrollCanvas = new NBox(Control);
_scrollCanvas.LayoutUpdated += OnContentLayoutUpdated;
Control.SetContent(_scrollCanvas);
}
if (e.OldElement != null)
{
(e.OldElement as IScrollViewController).ScrollToRequested -= OnScrollRequested;
}
if (e.NewElement != null)
{
(e.NewElement as IScrollViewController).ScrollToRequested += OnScrollRequested;
}
UpdateAll();
base.OnElementChanged(e);
}
void Initialize(EvasObject parent)
{
_box = new Native.Box(parent)
{
AlignmentX = -1,
AlignmentY = -1,
WeightX = 1,
WeightY = 1
};
SetContent(_box);
_menu = new GenList(parent)
{
BackgroundColor = EColor.Transparent,
Style = "solid/default",
};
_menu.ItemSelected += (s, e) =>
{
_flyoutMenu.TryGetValue(e.Item.Data as Item, out Element element);
SelectedItemChanged?.Invoke(this, new SelectedItemChangedEventArgs(element, -1));
};
_menu.Show();
_box.PackEnd(_menu);
_defaultClass = new GenItemClass("double_label")
{
GetTextHandler = (obj, part) =>
{
if (part == "elm.text")
{
return(((Item)obj).Title);
}
else
{
return(null);
}
},
GetContentHandler = (obj, part) =>
{
if (part == "elm.swallow.icon")
{
var icon = ((Item)obj).Icon;
if (icon != null)
{
var image = new Native.Image(parent)
{
MinimumWidth = Forms.ConvertToScaledPixel(24),
MinimumHeight = Forms.ConvertToScaledPixel(24)
};
var result = image.LoadFromImageSourceAsync(icon);
return(image);
}
else
{
return(null);
}
}
else
{
return(null);
}
}
};
}
