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      1 /*
      2  * Copyright (C) 2013 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 INC. AND ITS CONTRIBUTORS ``AS IS''
     14  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
     15  * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     16  * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
     17  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     18  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     19  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     20  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     21  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     22  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
     23  * THE POSSIBILITY OF SUCH DAMAGE.
     24  */
     25 
     26 #ifndef FocusEvent_h
     27 #define FocusEvent_h
     28 
     29 #include "core/dom/EventTarget.h"
     30 #include "core/dom/UIEvent.h"
     31 
     32 namespace WebCore {
     33 
     34 class Node;
     35 
     36 struct FocusEventInit : public UIEventInit {
     37     FocusEventInit();
     38 
     39     RefPtr<EventTarget> relatedTarget;
     40 };
     41 
     42 class FocusEvent : public UIEvent {
     43 public:
     44     static PassRefPtr<FocusEvent> create()
     45     {
     46         return adoptRef(new FocusEvent);
     47     }
     48 
     49     static PassRefPtr<FocusEvent> create(const AtomicString& type, bool canBubble, bool cancelable, PassRefPtr<AbstractView> view, int detail, EventTarget* relatedTarget)
     50     {
     51         return adoptRef(new FocusEvent(type, canBubble, cancelable, view, detail, relatedTarget));
     52     }
     53 
     54     static PassRefPtr<FocusEvent> create(const AtomicString& type, const FocusEventInit& initializer)
     55     {
     56         return adoptRef(new FocusEvent(type, initializer));
     57     }
     58 
     59     EventTarget* relatedTarget() const { return m_relatedTarget.get(); }
     60     void setRelatedTarget(EventTarget* relatedTarget) { m_relatedTarget = relatedTarget; }
     61 
     62     virtual const AtomicString& interfaceName() const;
     63     virtual bool isFocusEvent() const;
     64 
     65 private:
     66     FocusEvent();
     67     FocusEvent(const AtomicString& type, bool canBubble, bool cancelable, PassRefPtr<AbstractView>, int, EventTarget*);
     68     FocusEvent(const AtomicString& type, const FocusEventInit&);
     69 
     70     RefPtr<EventTarget> m_relatedTarget;
     71 };
     72 
     73 inline FocusEvent* toFocusEvent(Event* event)
     74 {
     75     ASSERT(event && event->isFocusEvent());
     76     return static_cast<FocusEvent*>(event);
     77 }
     78 
     79 class FocusEventDispatchMediator : public EventDispatchMediator {
     80 public:
     81     static PassRefPtr<FocusEventDispatchMediator> create(PassRefPtr<FocusEvent>);
     82 private:
     83     explicit FocusEventDispatchMediator(PassRefPtr<FocusEvent>);
     84     FocusEvent* event() const { return static_cast<FocusEvent*>(EventDispatchMediator::event()); }
     85     virtual bool dispatchEvent(EventDispatcher*) const OVERRIDE;
     86 };
     87 
     88 class BlurEventDispatchMediator : public EventDispatchMediator {
     89 public:
     90     static PassRefPtr<BlurEventDispatchMediator> create(PassRefPtr<FocusEvent>);
     91 private:
     92     explicit BlurEventDispatchMediator(PassRefPtr<FocusEvent>);
     93     FocusEvent* event() const { return static_cast<FocusEvent*>(EventDispatchMediator::event()); }
     94     virtual bool dispatchEvent(EventDispatcher*) const OVERRIDE;
     95 };
     96 
     97 class FocusInEventDispatchMediator : public EventDispatchMediator {
     98 public:
     99     static PassRefPtr<FocusInEventDispatchMediator> create(PassRefPtr<FocusEvent>);
    100 private:
    101     explicit FocusInEventDispatchMediator(PassRefPtr<FocusEvent>);
    102     FocusEvent* event() const { return static_cast<FocusEvent*>(EventDispatchMediator::event()); }
    103     virtual bool dispatchEvent(EventDispatcher*) const OVERRIDE;
    104 };
    105 
    106 class FocusOutEventDispatchMediator : public EventDispatchMediator {
    107 public:
    108     static PassRefPtr<FocusOutEventDispatchMediator> create(PassRefPtr<FocusEvent>);
    109 private:
    110     explicit FocusOutEventDispatchMediator(PassRefPtr<FocusEvent>);
    111     FocusEvent* event() const { return static_cast<FocusEvent*>(EventDispatchMediator::event()); }
    112     virtual bool dispatchEvent(EventDispatcher*) const OVERRIDE;
    113 };
    114 
    115 } // namespace WebCore
    116 
    117 #endif // FocusEvent_h
    118