third_party/WebKit/Source/core/events/TouchEventContext.h

   1 /*
   2  * Copyright (C) 2014 Google Inc. All Rights Reserved.
   3  *
   4  * Redistribution and use in source and binary forms, with or without
   5  * modification, are permitted provided that the following conditions
   6  * are met:
   7  * 1. Redistributions of source code must retain the above copyright
   8  *    notice, this list of conditions and the following disclaimer.
   9  * 2. Redistributions in binary form must reproduce the above copyright
  10  *    notice, this list of conditions and the following disclaimer in the
  11  *    documentation and/or other materials provided with the distribution.
  12  *
  13  * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
  14  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  15  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  16  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
  17  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  18  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  19  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
  20  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
  21  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  22  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  23  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  24  *
  25  */
  26
  27 #ifndef TouchEventContext_h
  28 #define TouchEventContext_h
  29
  30 #include "platform/heap/Handle.h"
  31 #include "wtf/PassRefPtr.h"
  32 #include "wtf/RefCounted.h"
  33 #include "wtf/RefPtr.h"
  34
  35 namespace blink {
  36
  37 class Event;
  38 class TouchList;
  39
  40 class TouchEventContext : public RefCountedWillBeGarbageCollected<TouchEventContext> {
  41     DECLARE_EMPTY_DESTRUCTOR_WILL_BE_REMOVED(TouchEventContext);
  42 public:
  43     static PassRefPtrWillBeRawPtr<TouchEventContext> create();
  44     void handleLocalEvents(Event&) const;
  45     TouchList& touches() { return *m_touches; }
  46     TouchList& targetTouches() { return *m_targetTouches; }
  47     TouchList& changedTouches() { return *m_changedTouches; }
  48
  49     DECLARE_TRACE();
  50
  51 private:
  52     TouchEventContext();
  53
  54     RefPtrWillBeMember<TouchList> m_touches;
  55     RefPtrWillBeMember<TouchList> m_targetTouches;
  56     RefPtrWillBeMember<TouchList> m_changedTouches;
  57 };
  58
  59 }
  60
  61 #endif // TouchEventContext_h