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diff --git a/xbmc/guilib/GUIWindow.h b/xbmc/guilib/GUIWindow.h
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+/*
+ *  Copyright (C) 2005-2018 Team Kodi
+ *  This file is part of Kodi - https://kodi.tv
+ *
+ *  SPDX-License-Identifier: GPL-2.0-or-later
+ *  See LICENSES/README.md for more information.
+ */
+
+#pragma once
+
+/*!
+\file GUIWindow.h
+\brief
+*/
+
+#include "GUIAction.h"
+#include "GUIControlGroup.h"
+#include <memory>
+#include "threads/CriticalSection.h"
+
+class CFileItem; typedef std::shared_ptr<CFileItem> CFileItemPtr;
+
+#include <limits.h>
+#include <map>
+#include <vector>
+
+enum RenderOrder {
+  RENDER_ORDER_WINDOW = 0,
+  RENDER_ORDER_DIALOG = 1,
+  RENDER_ORDER_WINDOW_SCREENSAVER = INT_MAX,
+  RENDER_ORDER_WINDOW_POINTER = INT_MAX - 1,
+  RENDER_ORDER_WINDOW_DEBUG = INT_MAX - 2,
+  RENDER_ORDER_DIALOG_TELETEXT = INT_MAX - 3
+};
+
+// forward
+class TiXmlNode;
+class TiXmlElement;
+class CXBMCTinyXML;
+class CVariant;
+
+class COrigin
+{
+public:
+  COrigin()
+  {
+    x = y = 0;
+  };
+  float x;
+  float y;
+  INFO::InfoPtr condition;
+};
+
+/*!
+ \ingroup winmsg
+ \brief
+ */
+class CGUIWindow : public CGUIControlGroup, protected CCriticalSection
+{
+public:
+  enum LOAD_TYPE { LOAD_EVERY_TIME, LOAD_ON_GUI_INIT, KEEP_IN_MEMORY };
+
+  CGUIWindow(int id, const std::string &xmlFile);
+  ~CGUIWindow(void) override;
+
+  bool Initialize();  // loads the window
+  bool Load(const std::string& strFileName, bool bContainsPath = false);
+
+  void CenterWindow();
+
+  void DoProcess(unsigned int currentTime, CDirtyRegionList &dirtyregions) override;
+
+  /*! \brief Main render function, called every frame.
+   Window classes should override this only if they need to alter how something is rendered.
+   General updating on a per-frame basis should be handled in FrameMove instead, as DoRender
+   is not necessarily re-entrant.
+   \sa FrameMove
+   */
+  void DoRender() override;
+
+  /*! \brief Do any post render activities.
+    Check if window closing animation is finished and finalize window closing.
+   */
+  void AfterRender();
+
+  /*! \brief Main update function, called every frame prior to rendering
+   Any window that requires updating on a frame by frame basis (such as to maintain
+   timers and the like) should override this function.
+   */
+  virtual void FrameMove() {}
+
+  void Close(bool forceClose = false, int nextWindowID = 0, bool enableSound = true, bool bWait = true);
+
+  // OnAction() is called by our window manager.  We should process any messages
+  // that should be handled at the window level in the derived classes, and any
+  // unhandled messages should be dropped through to here where we send the message
+  // on to the currently focused control.  Returns true if the action has been handled
+  // and does not need to be passed further down the line (to our global action handlers)
+  bool OnAction(const CAction &action) override;
+
+  using CGUIControlGroup::OnBack;
+  virtual bool OnBack(int actionID);
+  using CGUIControlGroup::OnInfo;
+  virtual bool OnInfo(int actionID) { return false; }
+
+  /*! \brief Clear the background (if necessary) prior to rendering the window
+   */
+  virtual void ClearBackground();
+
+  bool OnMove(int fromControl, int moveAction);
+  bool OnMessage(CGUIMessage& message) override;
+
+  bool ControlGroupHasFocus(int groupID, int controlID);
+  void SetID(int id) override;
+  virtual bool HasID(int controlID) const;
+  const std::vector<int>& GetIDRange() const { return m_idRange; }
+  int GetPreviousWindow() { return m_previousWindow; }
+  CRect GetScaledBounds() const;
+  void ClearAll() override;
+  using CGUIControlGroup::AllocResources;
+  virtual void AllocResources(bool forceLoad = false);
+  void FreeResources(bool forceUnLoad = false) override;
+  void DynamicResourceAlloc(bool bOnOff) override;
+  virtual bool IsDialog() const { return false; }
+  virtual bool IsDialogRunning() const { return false; }
+  virtual bool IsModalDialog() const { return false; }
+  virtual bool IsMediaWindow() const { return false; }
+  virtual bool HasListItems() const { return false; }
+  virtual bool IsSoundEnabled() const { return true; }
+  virtual CFileItemPtr GetCurrentListItem(int offset = 0) { return CFileItemPtr(); }
+  virtual int GetViewContainerID() const { return 0; }
+  virtual int GetViewCount() const { return 0; }
+  virtual bool CanBeActivated() const { return true; }
+  virtual bool IsActive() const;
+  void SetCoordsRes(const RESOLUTION_INFO& res) { m_coordsRes = res; }
+  const RESOLUTION_INFO& GetCoordsRes() const { return m_coordsRes; }
+  void SetLoadType(LOAD_TYPE loadType) { m_loadType = loadType; }
+  LOAD_TYPE GetLoadType() { return m_loadType; }
+  int GetRenderOrder() { return m_renderOrder; }
+  void SetInitialVisibility() override;
+  bool IsVisible() const override { return true; }; // windows are always considered visible as they implement their own
+                                                   // versions of UpdateVisibility, and are deemed visible if they're in
+                                                   // the window manager's active list.
+  virtual bool HasVisibleControls() { return true; }; //Assume that window always has visible controls
+
+  bool IsAnimating(ANIMATION_TYPE animType) override;
+
+  /*!
+   \brief Return if the window is a custom window
+   \return true if the window is an custom window otherwise false
+   */
+  bool IsCustom() const { return m_custom; }
+
+  /*!
+   \brief Mark this window as custom window
+   \param custom true if this window is a custom window, false if not
+   */
+  void SetCustom(bool custom) { m_custom = custom; }
+
+  void DisableAnimations();
+
+  virtual void ResetControlStates();
+  void UpdateControlStats() override {}; // Do not count window itself
+
+  void       SetRunActionsManually();
+  void       RunLoadActions() const;
+  void       RunUnloadActions() const;
+
+  /*! \brief Set a property
+   Sets the value of a property referenced by a key.
+   \param key name of the property to set
+   \param value value to set, may be a string, integer, boolean or double.
+   \sa GetProperty
+   */
+  void SetProperty(const std::string &key, const CVariant &value);
+
+  /*! \brief Retrieve a property
+   \param key name of the property to retrieve
+   \return value of the property, empty if it doesn't exist
+   */
+  CVariant GetProperty(const std::string &key) const;
+
+  /*! \brief Clear a all the window's properties
+   \sa SetProperty, HasProperty, GetProperty
+   */
+  void ClearProperties();
+
+#ifdef _DEBUG
+  void DumpTextureUse() override;
+#endif
+  bool HasSaveLastControl() const { return !m_defaultAlways; }
+
+  virtual void OnDeinitWindow(int nextWindowID);
+protected:
+  EVENT_RESULT OnMouseEvent(const CPoint &point, const CMouseEvent &event) override;
+
+  /*!
+   \brief Load the window XML from the given path
+   \param strPath the path to the window XML
+   \param strLowerPath a lowered path to the window XML
+   */
+  virtual bool LoadXML(const std::string& strPath, const std::string &strLowerPath);
+
+  /*!
+   \brief Loads the window from the given XML element
+   \param pRootElement the XML element
+   \return true if the window is loaded from the given XML otherwise false.
+   */
+  virtual bool Load(TiXmlElement *pRootElement);
+
+  /*!
+   \brief Prepare the XML for load
+   \param rootElement the original XML element
+   \return the prepared XML (resolved includes, constants and expression)
+   */
+  virtual std::unique_ptr<TiXmlElement> Prepare(const std::unique_ptr<TiXmlElement>& rootElement);
+
+  /*!
+   \brief Check if window needs a (re)load. The window need to be (re)loaded when window is not loaded or include conditions values were changed
+   */
+  bool NeedLoad() const;
+
+  virtual void SetDefaults();
+  virtual void OnWindowUnload() {}
+  virtual void OnWindowLoaded();
+  virtual void OnInitWindow();
+  void Close_Internal(bool forceClose = false, int nextWindowID = 0, bool enableSound = true);
+  EVENT_RESULT OnMouseAction(const CAction &action);
+  bool Animate(unsigned int currentTime) override;
+  bool CheckAnimation(ANIMATION_TYPE animType) override;
+
+  // control state saving on window close
+  virtual void SaveControlStates();
+  virtual void RestoreControlStates();
+
+  // methods for updating controls and sending messages
+  void OnEditChanged(int id, std::string &text);
+  bool SendMessage(int message, int id, int param1 = 0, int param2 = 0);
+
+  void LoadControl(TiXmlElement* pControl, CGUIControlGroup *pGroup, const CRect &rect);
+
+  std::vector<int> m_idRange;
+  RESOLUTION_INFO m_coordsRes; // resolution that the window coordinates are in.
+  bool m_needsScaling;
+  bool m_windowLoaded;  // true if the window's xml file has been loaded
+  LOAD_TYPE m_loadType;
+  bool m_dynamicResourceAlloc;
+  bool m_closing;
+  bool m_active;        // true if window is active or dialog is running
+  KODI::GUILIB::GUIINFO::CGUIInfoColor m_clearBackground; // colour to clear the window
+
+  int m_renderOrder;      // for render order of dialogs
+
+  /*! \brief Grabs the window's top,left position in skin coordinates
+   The window origin may change based on `<origin>` tag conditions in the skin.
+
+   \return the window's origin in skin coordinates
+   */
+  CPoint GetPosition() const override;
+  std::vector<COrigin> m_origins;  // positions of dialogs depending on base window
+
+  // control states
+  int m_lastControlID;
+  std::vector<CControlState> m_controlStates;
+  int m_previousWindow;
+
+  bool m_animationsEnabled;
+  struct icompare
+  {
+    bool operator()(const std::string &s1, const std::string &s2) const;
+  };
+
+  CGUIAction m_loadActions;
+  CGUIAction m_unloadActions;
+
+  /*! \brief window root xml definition after resolving any skin includes.
+    Stored to avoid parsing the XML every time the window is loaded.
+   */
+  std::unique_ptr<TiXmlElement> m_windowXMLRootElement;
+
+  bool m_manualRunActions;
+
+  int m_exclusiveMouseControl; ///< \brief id of child control that wishes to receive all mouse events \sa GUI_MSG_EXCLUSIVE_MOUSE
+
+  int m_menuControlID;
+  int m_menuLastFocusedControlID;
+  bool m_custom;
+
+private:
+  std::map<std::string, CVariant, icompare> m_mapProperties;
+  std::map<INFO::InfoPtr, bool> m_xmlIncludeConditions; ///< \brief used to store conditions used to resolve includes for this window
+};
+