static partial void MappingSemantics(IViewHandler handler, IView view)
{
if (handler.PlatformView == null)
{
return;
}
AccessibilityDelegateCompat?accessibilityDelegate = null;
if (handler.PlatformView is View viewPlatform)
{
accessibilityDelegate = ViewCompat.GetAccessibilityDelegate(viewPlatform) as MauiAccessibilityDelegateCompat;
}
if (handler.PlatformView is not PlatformView platformView)
{
return;
}
platformView = platformView.GetSemanticPlatformElement();
var desc = view.Semantics?.Description;
var hint = view.Semantics?.Hint;
// We use MauiAccessibilityDelegateCompat to fix the issue of AutomationId breaking accessibility
// Because AutomationId gets set on the contentDesc we have to clear that out on the accessibility node via
// the use of our MauiAccessibilityDelegateCompat
if (!string.IsNullOrWhiteSpace(hint) ||
!string.IsNullOrWhiteSpace(desc) ||
!string.IsNullOrWhiteSpace(view.AutomationId))
{
if (accessibilityDelegate == null)
{
var currentDelegate = ViewCompat.GetAccessibilityDelegate(platformView);
if (currentDelegate is MauiAccessibilityDelegateCompat)
{
currentDelegate = null;
}
accessibilityDelegate = new MauiAccessibilityDelegateCompat(currentDelegate)
{
Handler = handler
};
ViewCompat.SetAccessibilityDelegate(platformView, accessibilityDelegate);
}
if (!string.IsNullOrWhiteSpace(hint) ||
!string.IsNullOrWhiteSpace(desc))
{
platformView.ImportantForAccessibility = ImportantForAccessibility.Yes;
}
}
else if (accessibilityDelegate != null)
{
ViewCompat.SetAccessibilityDelegate(platformView, null);
}
}
partial void DisconnectingHandler(NativeView nativeView)
{
if (nativeView.IsAlive() &&
ViewCompat.GetAccessibilityDelegate(nativeView) is MauiAccessibilityDelegateCompat ad)
{
ad.Handler = null;
ViewCompat.SetAccessibilityDelegate(nativeView, null);
}
}
partial void DisconnectingHandler(PlatformView platformView)
{
if (platformView.IsAlive())
{
platformView.FocusChange -= OnPlatformViewFocusChange;
if (ViewCompat.GetAccessibilityDelegate(platformView) is MauiAccessibilityDelegateCompat ad)
{
ad.Handler = null;
ViewCompat.SetAccessibilityDelegate(platformView, null);
}
}
}
static partial void MappingSemantics(IViewHandler handler, IView view)
{
if (handler.NativeView == null)
{
return;
}
var accessibilityDelegate = ViewCompat.GetAccessibilityDelegate(handler.NativeView as View) as MauiAccessibilityDelegateCompat;
if (view.Semantics != null && accessibilityDelegate == null)
{
if (handler.NativeView is not NativeView nativeView)
{
return;
}
if (nativeView is AndroidX.AppCompat.Widget.SearchView sv)
{
nativeView = sv.FindViewById(Resource.Id.search_button) !;
}
if (!string.IsNullOrWhiteSpace(view.Semantics.Hint) || !string.IsNullOrWhiteSpace(view.Semantics.Description))
{
if (accessibilityDelegate == null)
{
var currentDelegate = ViewCompat.GetAccessibilityDelegate(nativeView);
if (currentDelegate is MauiAccessibilityDelegateCompat)
{
currentDelegate = null;
}
accessibilityDelegate = new MauiAccessibilityDelegateCompat(currentDelegate)
{
Handler = handler
};
ViewCompat.SetAccessibilityDelegate(nativeView, accessibilityDelegate);
}
}
else if (accessibilityDelegate != null)
{
ViewCompat.SetAccessibilityDelegate(nativeView, null);
}
if (accessibilityDelegate != null)
{
nativeView.ImportantForAccessibility = ImportantForAccessibility.Yes;
}
}
}
static partial void MappingSemantics(IViewHandler handler, IView view)
{
if (view.Semantics != null &&
handler is ViewHandler viewHandler &&
viewHandler.AccessibilityDelegate == null &&
ViewCompat.GetAccessibilityDelegate(handler.NativeView as NativeView) == null)
{
if (!string.IsNullOrEmpty(view.Semantics.Hint))
{
viewHandler.AccessibilityDelegate = new MauiAccessibilityDelegate()
{
Handler = viewHandler
};
ViewCompat.SetAccessibilityDelegate(handler.NativeView as NativeView, viewHandler.AccessibilityDelegate);
}
}
}
static partial void MappingSemantics(ViewHandler handler, IView view)
{
if (handler.NativeView == null)
{
return;
}
if (view.Semantics != null &&
handler is ViewHandler viewHandler &&
viewHandler.AccessibilityDelegate == null &&
ViewCompat.GetAccessibilityDelegate(handler.NativeView as NativeView) == null)
{
if (handler.NativeView is not NativeView nativeView)
{
return;
}
if (nativeView is AndroidX.AppCompat.Widget.SearchView sv)
{
nativeView = sv.FindViewById(Resource.Id.search_button) !;
}
if (!string.IsNullOrWhiteSpace(view.Semantics.Hint) || !string.IsNullOrWhiteSpace(view.Semantics.Description))
{
if (viewHandler.AccessibilityDelegate == null)
{
viewHandler.AccessibilityDelegate = new MauiAccessibilityDelegate()
{
Handler = viewHandler
};
ViewCompat.SetAccessibilityDelegate(nativeView, viewHandler.AccessibilityDelegate);
}
}
else if (viewHandler.AccessibilityDelegate != null)
{
viewHandler.AccessibilityDelegate = null;
ViewCompat.SetAccessibilityDelegate(nativeView, null);
}
if (viewHandler.AccessibilityDelegate != null)
{
nativeView.ImportantForAccessibility = ImportantForAccessibility.Yes;
}
}
}
internal static void AddOrRemoveControlsAccessibilityDelegate(this View virtualView)
{
if (virtualView?.Handler?.NativeView is not AView view)
{
return;
}
bool needsDelegate = virtualView.ControlsAccessibilityDelegateNeeded();
var currentDelegate = ViewCompat.GetAccessibilityDelegate(view);
if (needsDelegate)
{
if (currentDelegate is ControlsAccessibilityDelegate)
{
return;
}
// This means the current delegate didn't come from our code at all so we just exit and assume
// the user wants full control of the delegate
// If the user is inheriting from AccessibilityDelegateCompatWrapper then we will continue wrapping
if (currentDelegate != null && currentDelegate is not AccessibilityDelegateCompatWrapper)
{
return;
}
var controlsDelegate = new ControlsAccessibilityDelegate(currentDelegate, virtualView.Handler);
ViewCompat.SetAccessibilityDelegate(view, controlsDelegate);
}
else if (currentDelegate != null)
{
if (currentDelegate is ControlsAccessibilityDelegate cad)
{
ViewCompat.SetAccessibilityDelegate(view, cad.WrappedDelegate);
return;
}
}
}
