root/Source/core/events/Event.cpp

DEFINITIONS

1. cancelable
2. m_createTime
3. m_createTime
4. m_createTime
5. initEvent
6. interfaceName
7. hasInterface
8. isUIEvent
9. isMouseEvent
10. isFocusEvent
11. isKeyboardEvent
12. isTouchEvent
13. isGestureEvent
14. isWheelEvent
15. isDragEvent
16. isClipboardEvent
17. isBeforeTextInsertedEvent
18. isBeforeUnloadEvent
19. setTarget
20. receivedTarget
21. setUnderlyingEvent
22. ensureEventPath
23. path
24. trace

/*
 * Copyright (C) 2001 Peter Kelly (pmk@post.com)
 * Copyright (C) 2001 Tobias Anton (anton@stud.fbi.fh-darmstadt.de)
 * Copyright (C) 2006 Samuel Weinig (sam.weinig@gmail.com)
 * Copyright (C) 2003, 2005, 2006, 2008 Apple Inc. All rights reserved.
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Library General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Library General Public License for more details.
 *
 * You should have received a copy of the GNU Library General Public License
 * along with this library; see the file COPYING.LIB.  If not, write to
 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
 * Boston, MA 02110-1301, USA.
 */

#include "config.h"
#include "core/events/Event.h"

#include "core/dom/StaticNodeList.h"
#include "core/events/EventTarget.h"
#include "wtf/CurrentTime.h"

namespace WebCore {

EventInit::EventInit()
    : bubbles(false)
    , cancelable(false)
{
}


Event::Event()
    : m_canBubble(false)
    , m_cancelable(false)
    , m_propagationStopped(false)
    , m_immediatePropagationStopped(false)
    , m_defaultPrevented(false)
    , m_defaultHandled(false)
    , m_cancelBubble(false)
    , m_eventPhase(0)
    , m_currentTarget(0)
    , m_createTime(convertSecondsToDOMTimeStamp(currentTime()))
{
    ScriptWrappable::init(this);
}

Event::Event(const AtomicString& eventType, bool canBubbleArg, bool cancelableArg)
    : m_type(eventType)
    , m_canBubble(canBubbleArg)
    , m_cancelable(cancelableArg)
    , m_propagationStopped(false)
    , m_immediatePropagationStopped(false)
    , m_defaultPrevented(false)
    , m_defaultHandled(false)
    , m_cancelBubble(false)
    , m_eventPhase(0)
    , m_currentTarget(0)
    , m_createTime(convertSecondsToDOMTimeStamp(currentTime()))
{
    ScriptWrappable::init(this);
}

Event::Event(const AtomicString& eventType, const EventInit& initializer)
    : m_type(eventType)
    , m_canBubble(initializer.bubbles)
    , m_cancelable(initializer.cancelable)
    , m_propagationStopped(false)
    , m_immediatePropagationStopped(false)
    , m_defaultPrevented(false)
    , m_defaultHandled(false)
    , m_cancelBubble(false)
    , m_eventPhase(0)
    , m_currentTarget(0)
    , m_createTime(convertSecondsToDOMTimeStamp(currentTime()))
{
    ScriptWrappable::init(this);
}

Event::~Event()
{
}

void Event::initEvent(const AtomicString& eventTypeArg, bool canBubbleArg, bool cancelableArg)
{
    if (dispatched())
        return;

    m_propagationStopped = false;
    m_immediatePropagationStopped = false;
    m_defaultPrevented = false;

    m_type = eventTypeArg;
    m_canBubble = canBubbleArg;
    m_cancelable = cancelableArg;
}

const AtomicString& Event::interfaceName() const
{
    return EventNames::Event;
}

bool Event::hasInterface(const AtomicString& name) const
{
    return interfaceName() == name;
}

bool Event::isUIEvent() const
{
    return false;
}

bool Event::isMouseEvent() const
{
    return false;
}

bool Event::isFocusEvent() const
{
    return false;
}

bool Event::isKeyboardEvent() const
{
    return false;
}

bool Event::isTouchEvent() const
{
    return false;
}

bool Event::isGestureEvent() const
{
    return false;
}

bool Event::isWheelEvent() const
{
    return false;
}

bool Event::isDragEvent() const
{
    return false;
}

bool Event::isClipboardEvent() const
{
    return false;
}

bool Event::isBeforeTextInsertedEvent() const
{
    return false;
}

bool Event::isBeforeUnloadEvent() const
{
    return false;
}

void Event::setTarget(PassRefPtr<EventTarget> target)
{
    if (m_target == target)
        return;

    m_target = target;
    if (m_target)
        receivedTarget();
}

void Event::receivedTarget()
{
}

void Event::setUnderlyingEvent(PassRefPtrWillBeRawPtr<Event> ue)
{
    // Prohibit creation of a cycle -- just do nothing in that case.
    for (Event* e = ue.get(); e; e = e->underlyingEvent())
        if (e == this)
            return;
    m_underlyingEvent = ue;
}

EventPath& Event::ensureEventPath()
{
    if (!m_eventPath)
        m_eventPath = adoptPtrWillBeNoop(new EventPath(this));
    return *m_eventPath;
}

PassRefPtr<NodeList> Event::path() const
{
    if (!m_currentTarget || !m_currentTarget->toNode())
        return StaticNodeList::createEmpty();
    Node* node = m_currentTarget->toNode();
    // FIXME: Support SVG Elements.
    if (node->isSVGElement())
        return StaticNodeList::createEmpty();
    size_t eventPathSize = m_eventPath->size();
    for (size_t i = 0; i < eventPathSize; ++i) {
        if (node == (*m_eventPath)[i].node()) {
            return (*m_eventPath)[i].treeScopeEventContext()->ensureEventPath(*m_eventPath);
        }
    }
    return StaticNodeList::createEmpty();
}

void Event::trace(Visitor* visitor)
{
    visitor->trace(m_underlyingEvent);
    visitor->trace(m_eventPath);
}

} // namespace WebCore