Line data    Source code

       1             : /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
       2             :  * vim: set ts=2 sw=2 et tw=78:
       3             :  * This Source Code Form is subject to the terms of the Mozilla Public
       4             :  * License, v. 2.0. If a copy of the MPL was not distributed with this
       5             :  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
       6             :  */
       7             : 
       8             : /* Description of TouchManager class.
       9             :  * Incapsulate code related with work of touch events.
      10             :  */
      11             : 
      12             : #ifndef TouchManager_h_
      13             : #define TouchManager_h_
      14             : 
      15             : #include "mozilla/BasicEvents.h"
      16             : #include "mozilla/dom/Touch.h"
      17             : #include "mozilla/TouchEvents.h"
      18             : #include "nsRefPtrHashtable.h"
      19             : 
      20             : class nsIDocument;
      21             : 
      22             : namespace mozilla {
      23             : class PresShell;
      24             : 
      25          32 : class TouchManager {
      26             : public:
      27             :   // Initialize and release static variables
      28             :   static void InitializeStatics();
      29             :   static void ReleaseStatics();
      30             : 
      31             :   void Init(PresShell* aPresShell, nsIDocument* aDocument);
      32             :   void Destroy();
      33             : 
      34             :   bool PreHandleEvent(mozilla::WidgetEvent* aEvent,
      35             :                       nsEventStatus* aStatus,
      36             :                       bool& aTouchIsNew,
      37             :                       bool& aIsHandlingUserInput,
      38             :                       nsCOMPtr<nsIContent>& aCurrentEventContent);
      39             : 
      40             :   static already_AddRefed<nsIContent> GetAnyCapturedTouchTarget();
      41             :   static bool HasCapturedTouch(int32_t aId);
      42             :   static already_AddRefed<dom::Touch> GetCapturedTouch(int32_t aId);
      43             :   static bool ShouldConvertTouchToPointer(const dom::Touch* aTouch,
      44             :                                           const WidgetTouchEvent* aEvent);
      45             : private:
      46             :   void EvictTouches();
      47             :   static void EvictTouchPoint(RefPtr<dom::Touch>& aTouch,
      48             :                               nsIDocument* aLimitToDocument = nullptr);
      49             :   static void AppendToTouchList(WidgetTouchEvent::TouchArray* aTouchList);
      50             : 
      51             :   RefPtr<PresShell>   mPresShell;
      52             :   nsCOMPtr<nsIDocument> mDocument;
      53             : 
      54           0 :   struct TouchInfo
      55             :   {
      56             :     RefPtr<mozilla::dom::Touch> mTouch;
      57             :     nsCOMPtr<nsIContent> mNonAnonymousTarget;
      58             :     bool mConvertToPointer;
      59             :   };
      60             :   static nsDataHashtable<nsUint32HashKey, TouchInfo>* sCaptureTouchList;
      61             : };
      62             : 
      63             : } // namespace mozilla
      64             : 
      65             : #endif /* !defined(TouchManager_h_) */