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      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     void trace(Visitor*);
     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
     62