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using ElmSharp;
namespace Xamarin.Forms.Platform.Tizen
{
public class MasterDetailPageRenderer : VisualElementRenderer<MasterDetailPage>
{
Native.MasterDetailPage _mdpage;
/// <summary>
/// Default constructor.
/// </summary>
public MasterDetailPageRenderer()
{
RegisterPropertyHandler("Master", UpdateMasterPage);
RegisterPropertyHandler("Detail", UpdateDetailPage);
RegisterPropertyHandler(MasterDetailPage.IsPresentedProperty,
UpdateIsPresented);
RegisterPropertyHandler(MasterDetailPage.MasterBehaviorProperty,
UpdateMasterBehavior);
RegisterPropertyHandler(MasterDetailPage.IsGestureEnabledProperty,
UpdateIsGestureEnabled);
}
protected override void OnElementChanged(ElementChangedEventArgs<MasterDetailPage> e)
{
if (_mdpage == null)
{
_mdpage = new Native.MasterDetailPage(Forms.Context.MainWindow)
{
Master = GetNativePage(e.NewElement.Master),
Detail = GetNativePage(e.NewElement.Detail),
IsPresented = e.NewElement.IsPresented,
};
_mdpage.IsPresentedChanged += (sender, ev) =>
{
Element.IsPresented = _mdpage.IsPresented;
};
}
if (e.OldElement != null)
{
(e.OldElement as IMasterDetailPageController).BackButtonPressed -= BackButtonPressedHandler;
}
if (e.NewElement != null)
{
(e.NewElement as IMasterDetailPageController).BackButtonPressed += BackButtonPressedHandler;
}
UpdateMasterBehavior();
SetNativeControl(_mdpage);
base.OnElementChanged(e);
}
void BackButtonPressedHandler(object sender, BackButtonPressedEventArgs e)
{
if ((Element != null) && Element.IsPresented)
{
Element.IsPresented = false;
e.Handled = true;
}
}
EvasObject GetNativePage(Page page)
{
var pageRenderer = Platform.GetOrCreateRenderer(page);
return pageRenderer.NativeView;
}
void UpdateMasterBehavior() {
_mdpage.MasterBehavior = Element.MasterBehavior;
}
void UpdateMasterPage()
{
_mdpage.Master = GetNativePage(Element.Master);
}
void UpdateDetailPage()
{
_mdpage.Detail = GetNativePage(Element.Detail);
}
void UpdateIsPresented()
{
_mdpage.IsPresented = Element.IsPresented;
}
void UpdateIsGestureEnabled()
{
_mdpage.IsGestureEnabled = Element.IsGestureEnabled;
}
}
}
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