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

   1 /*
   2  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
   3  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
   4  *           (C) 2001 Dirk Mueller (mueller@kde.org)
   5  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010 Apple Inc. All rights reserved.
   6  * Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies)
   7  * Copyright (C) 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
   8  * Copyright (C) 2011 Google Inc. All rights reserved.
   9  *
  10  * This library is free software; you can redistribute it and/or
  11  * modify it under the terms of the GNU Library General Public
  12  * License as published by the Free Software Foundation; either
  13  * version 2 of the License, or (at your option) any later version.
  14  *
  15  * This library is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  18  * Library General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU Library General Public License
  21  * along with this library; see the file COPYING.LIB.  If not, write to
  22  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  23  * Boston, MA 02110-1301, USA.
  24  */
  25
  26 #ifndef EventDispatcher_h
  27 #define EventDispatcher_h
  28
  29 #include "core/dom/SimulatedClickOptions.h"
  30 #include "platform/heap/Handle.h"
  31 #include "wtf/PassRefPtr.h"
  32 #include "wtf/RefPtr.h"
  33
  34 namespace blink {
  35
  36 class Event;
  37 class EventDispatchMediator;
  38 class FrameView;
  39 class Node;
  40 class NodeEventContext;
  41 class WindowEventContext;
  42
  43 enum EventDispatchContinuation {
  44     ContinueDispatching,
  45     DoneDispatching
  46 };
  47
  48 class EventDispatcher {
  49     STACK_ALLOCATED();
  50 public:
  51     static bool dispatchEvent(Node&, PassRefPtrWillBeRawPtr<EventDispatchMediator>);
  52     static void dispatchScopedEvent(Node&, PassRefPtrWillBeRawPtr<EventDispatchMediator>);
  53
  54     static void dispatchSimulatedClick(Node&, Event* underlyingEvent, SimulatedClickMouseEventOptions, SimulatedClickCreationScope);
  55
  56     bool dispatch();
  57     Node& node() const { return *m_node; }
  58     Event& event() const { return *m_event; }
  59
  60 private:
  61     EventDispatcher(Node&, PassRefPtrWillBeRawPtr<Event>);
  62
  63     EventDispatchContinuation dispatchEventPreProcess(void*& preDispatchEventHandlerResult);
  64     EventDispatchContinuation dispatchEventAtCapturing();
  65     EventDispatchContinuation dispatchEventAtTarget();
  66     void dispatchEventAtBubbling();
  67     void dispatchEventPostProcess(void* preDispatchEventHandlerResult);
  68
  69     RefPtrWillBeMember<Node> m_node;
  70     RefPtrWillBeMember<Event> m_event;
  71     RefPtrWillBeMember<FrameView> m_view;
  72 #if ENABLE(ASSERT)
  73     bool m_eventDispatched;
  74 #endif
  75 };
  76
  77 }
  78
  79 #endif