Sdk/BaseWidget: Add HasFocus method

SDK/include/NDK/BaseWidget.hpp

@@ -56,6 +56,8 @@ namespace Ndk
 			inline const Nz::Vector2f& GetContentSize() const;
 			inline Nz::Vector2f GetSize() const;
 
+			bool HasFocus() const;
+
 			inline bool IsVisible() const;
 
 			virtual void ResizeToContent() = 0;

SDK/include/NDK/Canvas.hpp

@@ -35,7 +35,9 @@ namespace Ndk
 
 		protected:
 			inline void ClearKeyboardOwner(std::size_t canvasIndex);
-			
+
+			inline bool IsKeyboardOwner(std::size_t canvasIndex) const;
+
 			inline void NotifyWidgetBoxUpdate(std::size_t index);
 			inline void NotifyWidgetCursorUpdate(std::size_t index);
 

SDK/include/NDK/Canvas.inl

@@ -52,6 +52,11 @@ namespace Ndk
 			SetKeyboardOwner(InvalidCanvasIndex);
 	}
 
+	inline bool Canvas::IsKeyboardOwner(std::size_t canvasIndex) const
+	{
+		return m_keyboardOwner == canvasIndex;
+	}
+
 	inline void Canvas::NotifyWidgetBoxUpdate(std::size_t index)
 	{
 		WidgetBox& entry = m_widgetBoxes[index];