Window focus: Added empty implementations for Android and iOS

src/SFML/Window/Android/WindowImplAndroid.cpp

@@ -181,6 +181,21 @@ void WindowImplAndroid::setKeyRepeatEnabled(bool enabled)
 }
 
 
+////////////////////////////////////////////////////////////
+void WindowImplAndroid::requestFocus()
+{
+    // Not applicable
+}
+
+
+////////////////////////////////////////////////////////////
+bool WindowImplAndroid::hasFocus() const
+{
+    // Not applicable
+    return false;
+}
+
+
 ////////////////////////////////////////////////////////////
 void WindowImplAndroid::forwardEvent(const Event& event)
 {

src/SFML/Window/Android/WindowImplAndroid.hpp

@@ -154,6 +154,21 @@ public:
     ////////////////////////////////////////////////////////////
     virtual void setKeyRepeatEnabled(bool enabled);
 
+    ////////////////////////////////////////////////////////////
+    /// \brief Request the current window to be made the active
+    ///        foreground window
+    ///
+    ////////////////////////////////////////////////////////////
+    virtual void requestFocus();
+
+    ////////////////////////////////////////////////////////////
+    /// \brief Check whether the window has the input focus
+    ///
+    /// \return True if window has focus, false otherwise
+    ///
+    ////////////////////////////////////////////////////////////
+    virtual bool hasFocus() const;
+
     static void forwardEvent(const Event& event);
     static WindowImplAndroid* singleInstance;
 

src/SFML/Window/iOS/WindowImplUIKit.hpp

@@ -157,6 +157,21 @@ public:
     ////////////////////////////////////////////////////////////
     virtual void setKeyRepeatEnabled(bool enabled);
 
+    ////////////////////////////////////////////////////////////
+    /// \brief Request the current window to be made the active
+    ///        foreground window
+    ///
+    ////////////////////////////////////////////////////////////
+    virtual void requestFocus();
+
+    ////////////////////////////////////////////////////////////
+    /// \brief Check whether the window has the input focus
+    ///
+    /// \return True if window has focus, false otherwise
+    ///
+    ////////////////////////////////////////////////////////////
+    virtual bool hasFocus() const;
+
 public:
 
     using WindowImpl::pushEvent;

src/SFML/Window/iOS/WindowImplUIKit.mm

@@ -170,6 +170,21 @@ void WindowImplUIKit::setKeyRepeatEnabled(bool enabled)
 }
 
 
+////////////////////////////////////////////////////////////
+void WindowImplUIKit::requestFocus()
+{
+    // Not applicable
+}
+
+
+////////////////////////////////////////////////////////////
+bool WindowImplUIKit::hasFocus() const
+{
+    // Not applicable
+    return false;
+}
+
+    
 ////////////////////////////////////////////////////////////
 SFView* WindowImplUIKit::getGlView() const
 {