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      1 /*
      2  * Copyright (C) 2001 Peter Kelly (pmk (at) post.com)
      3  * Copyright (C) 2001 Tobias Anton (anton (at) stud.fbi.fh-darmstadt.de)
      4  * Copyright (C) 2006 Samuel Weinig (sam.weinig (at) gmail.com)
      5  * Copyright (C) 2003, 2004, 2005, 2006, 2008 Apple Inc. All rights reserved.
      6  *
      7  * This library is free software; you can redistribute it and/or
      8  * modify it under the terms of the GNU Library General Public
      9  * License as published by the Free Software Foundation; either
     10  * version 2 of the License, or (at your option) any later version.
     11  *
     12  * This library is distributed in the hope that it will be useful,
     13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
     14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
     15  * Library General Public License for more details.
     16  *
     17  * You should have received a copy of the GNU Library General Public License
     18  * along with this library; see the file COPYING.LIB.  If not, write to
     19  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
     20  * Boston, MA 02110-1301, USA.
     21  *
     22  */
     23 
     24 #ifndef MouseEvent_h
     25 #define MouseEvent_h
     26 
     27 #include "core/events/EventDispatchMediator.h"
     28 #include "core/events/MouseRelatedEvent.h"
     29 
     30 namespace WebCore {
     31 
     32 class Clipboard;
     33 class EventDispatcher;
     34 class PlatformMouseEvent;
     35 
     36 struct MouseEventInit : public UIEventInit {
     37     MouseEventInit();
     38 
     39     int screenX;
     40     int screenY;
     41     int clientX;
     42     int clientY;
     43     bool ctrlKey;
     44     bool altKey;
     45     bool shiftKey;
     46     bool metaKey;
     47     unsigned short button;
     48     RefPtr<EventTarget> relatedTarget;
     49 };
     50 
     51 class MouseEvent : public MouseRelatedEvent {
     52 public:
     53     static PassRefPtr<MouseEvent> create()
     54     {
     55         return adoptRef(new MouseEvent);
     56     }
     57 
     58     static PassRefPtr<MouseEvent> create(const AtomicString& type, bool canBubble, bool cancelable, PassRefPtr<AbstractView>,
     59         int detail, int screenX, int screenY, int pageX, int pageY,
     60         int movementX, int movementY,
     61         bool ctrlKey, bool altKey, bool shiftKey, bool metaKey, unsigned short button,
     62         PassRefPtr<EventTarget> relatedTarget);
     63 
     64     static PassRefPtr<MouseEvent> create(const AtomicString& type, bool canBubble, bool cancelable, PassRefPtr<AbstractView>,
     65         int detail, int screenX, int screenY, int pageX, int pageY,
     66         int movementX, int movementY,
     67         bool ctrlKey, bool altKey, bool shiftKey, bool metaKey, unsigned short button,
     68         PassRefPtr<EventTarget> relatedTarget, PassRefPtr<Clipboard>, bool isSimulated = false);
     69 
     70     static PassRefPtr<MouseEvent> create(const AtomicString& eventType, PassRefPtr<AbstractView>, const PlatformMouseEvent&, int detail, PassRefPtr<Node> relatedTarget);
     71 
     72     static PassRefPtr<MouseEvent> create(const AtomicString& eventType, const MouseEventInit&);
     73 
     74     virtual ~MouseEvent();
     75 
     76     void initMouseEvent(const AtomicString& type, bool canBubble, bool cancelable, PassRefPtr<AbstractView>,
     77         int detail, int screenX, int screenY, int clientX, int clientY,
     78         bool ctrlKey, bool altKey, bool shiftKey, bool metaKey,
     79         unsigned short button, PassRefPtr<EventTarget> relatedTarget);
     80 
     81     // WinIE uses 1,4,2 for left/middle/right but not for click (just for mousedown/up, maybe others),
     82     // but we will match the standard DOM.
     83     unsigned short button() const { return m_button; }
     84     bool buttonDown() const { return m_buttonDown; }
     85     EventTarget* relatedTarget() const { return m_relatedTarget.get(); }
     86     EventTarget* relatedTarget(bool& isNull) const { isNull = !m_relatedTarget; return m_relatedTarget.get(); }
     87     void setRelatedTarget(PassRefPtr<EventTarget> relatedTarget) { m_relatedTarget = relatedTarget; }
     88 
     89     Clipboard* clipboard() const { return m_clipboard.get(); }
     90 
     91     Node* toElement() const;
     92     Node* fromElement() const;
     93 
     94     Clipboard* dataTransfer() const { return isDragEvent() ? m_clipboard.get() : 0; }
     95 
     96     virtual const AtomicString& interfaceName() const;
     97 
     98     virtual bool isMouseEvent() const;
     99     virtual bool isDragEvent() const;
    100     virtual int which() const;
    101 
    102 protected:
    103     MouseEvent(const AtomicString& type, bool canBubble, bool cancelable, PassRefPtr<AbstractView>,
    104         int detail, int screenX, int screenY, int pageX, int pageY,
    105         int movementX, int movementY,
    106         bool ctrlKey, bool altKey, bool shiftKey, bool metaKey, unsigned short button,
    107         PassRefPtr<EventTarget> relatedTarget, PassRefPtr<Clipboard>, bool isSimulated);
    108 
    109     MouseEvent(const AtomicString& type, const MouseEventInit&);
    110 
    111     MouseEvent();
    112 
    113 private:
    114     unsigned short m_button;
    115     bool m_buttonDown;
    116     RefPtr<EventTarget> m_relatedTarget;
    117     RefPtr<Clipboard> m_clipboard;
    118 };
    119 
    120 class SimulatedMouseEvent : public MouseEvent {
    121 public:
    122     static PassRefPtr<SimulatedMouseEvent> create(const AtomicString& eventType, PassRefPtr<AbstractView>, PassRefPtr<Event> underlyingEvent);
    123     virtual ~SimulatedMouseEvent();
    124 
    125 private:
    126     SimulatedMouseEvent(const AtomicString& eventType, PassRefPtr<AbstractView>, PassRefPtr<Event> underlyingEvent);
    127 };
    128 
    129 class MouseEventDispatchMediator : public EventDispatchMediator {
    130 public:
    131     enum MouseEventType { SyntheticMouseEvent, NonSyntheticMouseEvent};
    132     static PassRefPtr<MouseEventDispatchMediator> create(PassRefPtr<MouseEvent>, MouseEventType = NonSyntheticMouseEvent);
    133 
    134 private:
    135     explicit MouseEventDispatchMediator(PassRefPtr<MouseEvent>, MouseEventType);
    136     MouseEvent* event() const;
    137 
    138     virtual bool dispatchEvent(EventDispatcher*) const OVERRIDE;
    139     bool isSyntheticMouseEvent() const { return m_mouseEventType == SyntheticMouseEvent; }
    140     MouseEventType m_mouseEventType;
    141 };
    142 
    143 DEFINE_EVENT_TYPE_CASTS(MouseEvent);
    144 
    145 } // namespace WebCore
    146 
    147 #endif // MouseEvent_h
    148