third_party/WebKit/Source/core/events/NodeEventContext.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 NodeEventContext_h
  28 #define NodeEventContext_h
  29
  30 #include "core/CoreExport.h"
  31 #include "core/events/TreeScopeEventContext.h"
  32 #include "wtf/PassRefPtr.h"
  33 #include "wtf/RefPtr.h"
  34
  35 namespace blink {
  36
  37 class EventTarget;
  38 class Node;
  39 class TouchEventContext;
  40
  41 class CORE_EXPORT NodeEventContext {
  42     ALLOW_ONLY_INLINE_ALLOCATION();
  43     DECLARE_EMPTY_DESTRUCTOR_WILL_BE_REMOVED(NodeEventContext);
  44 public:
  45     // FIXME: Use ContainerNode instead of Node.
  46     NodeEventContext(PassRefPtrWillBeRawPtr<Node>, PassRefPtrWillBeRawPtr<EventTarget> currentTarget);
  47     DECLARE_TRACE();
  48
  49     Node* node() const { return m_node.get(); }
  50
  51     void setTreeScopeEventContext(PassRefPtrWillBeRawPtr<TreeScopeEventContext> prpTreeScopeEventContext) { m_treeScopeEventContext = prpTreeScopeEventContext; }
  52     TreeScopeEventContext& treeScopeEventContext() { ASSERT(m_treeScopeEventContext); return *m_treeScopeEventContext; }
  53
  54     EventTarget* target() const { return m_treeScopeEventContext->target(); }
  55     EventTarget* relatedTarget() const { return m_treeScopeEventContext->relatedTarget(); }
  56     TouchEventContext* touchEventContext() const { return m_treeScopeEventContext->touchEventContext(); }
  57
  58     bool currentTargetSameAsTarget() const { return m_currentTarget.get() == target(); }
  59     void handleLocalEvents(Event&) const;
  60
  61 private:
  62     RefPtrWillBeMember<Node> m_node;
  63     RefPtrWillBeMember<EventTarget> m_currentTarget;
  64     RefPtrWillBeMember<TreeScopeEventContext> m_treeScopeEventContext;
  65 };
  66
  67 } // namespace blink
  68
  69 WTF_ALLOW_MOVE_INIT_AND_COMPARE_WITH_MEM_FUNCTIONS(blink::NodeEventContext);
  70
  71 #endif // NodeEventContext_h