Fix possible undismissed screen keyboard in iOS

lib/irrlicht/include/IGUIEnvironment.h

@@ -610,6 +610,8 @@ public:
 
 	//! reads an element
 	virtual void readGUIElement(io::IXMLReader* reader, IGUIElement* node) =0;
+
+	virtual void removeHovered(IGUIElement* element) = 0;
 };
 
 

lib/irrlicht/source/Irrlicht/CGUIEnvironment.cpp

@@ -1617,6 +1617,21 @@ IGUIElement* CGUIEnvironment::getNextElement(bool reverse, bool group)
 }
 
 
+void CGUIEnvironment::removeHovered(IGUIElement* element)
+{
+	if (Hovered && Hovered == element)
+	{
+		Hovered->drop();
+		Hovered = NULL;
+		if (HoveredNoSubelement)
+		{
+			HoveredNoSubelement->drop();
+			HoveredNoSubelement = NULL;
+		}
+	}
+}
+
+
 //! creates an GUI Environment
 IGUIEnvironment* createGUIEnvironment(io::IFileSystem* fs,
 					video::IVideoDriver* Driver,

lib/irrlicht/source/Irrlicht/CGUIEnvironment.h

@@ -256,6 +256,7 @@ public:
 	//! reads an element
 	virtual void readGUIElement(io::IXMLReader* reader, IGUIElement* node);
 
+	virtual void removeHovered(IGUIElement* element);
 private:
 
 	IGUIElement* getNextElement(bool reverse=false, bool group=false);

src/guiengine/widgets/CGUIEditBox.cpp

@@ -242,7 +242,8 @@ CGUIEditBox::~CGUIEditBox()
         GUIEngine::ScreenKeyboard::hasSystemScreenKeyboard())
         Android_toggleOnScreenKeyboard(false, 0, 0);
 #elif defined(_IRR_COMPILE_WITH_SDL_DEVICE_)
-    SDL_StopTextInput();
+    if (SDL_IsTextInputActive())
+        SDL_StopTextInput();
 #endif
 
 #endif
@@ -366,7 +367,8 @@ bool CGUIEditBox::OnEvent(const SEvent& event)
                     setTextMarkers(0,0);
                 }
 #if !defined(ANDROID) && defined(_IRR_COMPILE_WITH_SDL_DEVICE_)
-                SDL_StopTextInput();
+                if (SDL_IsTextInputActive())
+                    SDL_StopTextInput();
 #endif
 #ifdef ANDROID
             // If using non touchscreen input in android dismiss text input

src/guiengine/widgets/text_box_widget.cpp

@@ -199,6 +199,9 @@ void TextBoxWidget::unfocused(const int playerID, Widget* new_focus)
 
 void TextBoxWidget::elementRemoved()
 {
+    // If text box is destroyed without moving mouse out of its focus, the
+    // reference will be kept so we clear it manually
+    GUIEngine::getGUIEnv()->removeHovered(m_element);
     // normally at this point normal widgets have been deleted by irrlicht already.
     // but this is a custom widget and the gui env does not appear to want to
     // manage it. so we free it manually