EventTargetNode.cpp [plain text]
#include "config.h"
#include "EventTargetNode.h"
#include "Document.h"
#include "Element.h"
#include "Event.h"
#include "EventListener.h"
#include "EventNames.h"
#include "Frame.h"
#include "HTMLNames.h"
#include "TextStream.h"
#include "KeyboardEvent.h"
#include "MouseEvent.h"
#include "MutationEvent.h"
#include "PlatformMouseEvent.h"
#include "PlatformWheelEvent.h"
#include "RegisteredEventListener.h"
#include "UIEvent.h"
#include "WheelEvent.h"
#include "kjs_proxy.h"
#include "WebCoreThread.h"
namespace WebCore {
using namespace EventNames;
using namespace HTMLNames;
#ifndef NDEBUG
static int gEventDispatchForbidden = 0;
#endif
static HashMap<Node *, int> * WebThreadGetCurrentDOMMouseWheelEventListeners()
{
WebThreadContext *threadContext = WebThreadCurrentContext();
if (!threadContext->DOMMouseWheelEventListeners)
threadContext->DOMMouseWheelEventListeners = new HashMap<Node *, int>;
return static_cast< HashMap<Node *, int> *>(threadContext->DOMMouseWheelEventListeners);
}
static HashMap<Node *, int> * WebThreadGetCurrentDOMMouseMoveEventListeners()
{
WebThreadContext *threadContext = WebThreadCurrentContext();
if (!threadContext->DOMMouseMoveEventListeners)
threadContext->DOMMouseMoveEventListeners = new HashMap<Node *, int>;
return static_cast< HashMap<Node *, int> *>(threadContext->DOMMouseMoveEventListeners);
}
static HashMap<Node *, int> * WebThreadGetCurrentDOMMouseClickEventListeners()
{
WebThreadContext *threadContext = WebThreadCurrentContext();
if (!threadContext->DOMMouseClickEventListeners)
threadContext->DOMMouseClickEventListeners = new HashMap<Node *, int>;
return static_cast< HashMap<Node *, int> *>(threadContext->DOMMouseClickEventListeners);
}
EventTargetNode::EventTargetNode(Document *doc)
: Node(doc)
, m_regdListeners(0)
{
}
EventTargetNode::~EventTargetNode()
{
WebThreadGetCurrentDOMMouseMoveEventListeners()->remove(this);
WebThreadGetCurrentDOMMouseWheelEventListeners()->remove(this);
WebThreadGetCurrentDOMMouseClickEventListeners()->remove(this);
if (m_regdListeners && !m_regdListeners->isEmpty() && !inDocument())
document()->unregisterDisconnectedNodeWithEventListeners(this);
delete m_regdListeners;
}
void EventTargetNode::insertedIntoDocument()
{
if (m_regdListeners && !m_regdListeners->isEmpty())
document()->unregisterDisconnectedNodeWithEventListeners(this);
Node::insertedIntoDocument();
}
void EventTargetNode::removedFromDocument()
{
if (m_regdListeners && !m_regdListeners->isEmpty())
document()->registerDisconnectedNodeWithEventListeners(this);
Node::removedFromDocument();
}
void EventTargetNode::addEventListener(const AtomicString &eventType, PassRefPtr<EventListener> listener, const bool useCapture)
{
if (!document()->attached())
return;
Document::ListenerType type = static_cast<Document::ListenerType>(0);
if (eventType == DOMSubtreeModifiedEvent)
type = Document::DOMSUBTREEMODIFIED_LISTENER;
else if (eventType == DOMNodeInsertedEvent)
type = Document::DOMNODEINSERTED_LISTENER;
else if (eventType == DOMNodeRemovedEvent)
type = Document::DOMNODEREMOVED_LISTENER;
else if (eventType == DOMNodeRemovedFromDocumentEvent)
type = Document::DOMNODEREMOVEDFROMDOCUMENT_LISTENER;
else if (eventType == DOMNodeInsertedIntoDocumentEvent)
type = Document::DOMNODEINSERTEDINTODOCUMENT_LISTENER;
else if (eventType == DOMAttrModifiedEvent)
type = Document::DOMATTRMODIFIED_LISTENER;
else if (eventType == DOMCharacterDataModifiedEvent)
type = Document::DOMCHARACTERDATAMODIFIED_LISTENER;
else if (eventType == overflowchangedEvent)
type = Document::OVERFLOWCHANGED_LISTENER;
if (type)
document()->addListenerType(type);
if (!m_regdListeners)
m_regdListeners = new RegisteredEventListenerList;
if (this == document() && eventType == scrollEvent)
document()->incrementScrollEventListenersCount();
removeEventListener(eventType, listener.get(), useCapture);
if (m_regdListeners->isEmpty() && !inDocument())
document()->registerDisconnectedNodeWithEventListeners(this);
m_regdListeners->append(new RegisteredEventListener(eventType, listener.get(), useCapture));
HashMap<Node *, int> * listeners = NULL;
if (eventType == mousewheelEvent)
listeners = WebThreadGetCurrentDOMMouseWheelEventListeners();
else if (eventType == mousemoveEvent || eventType == mouseoverEvent || eventType == mouseoutEvent)
listeners = WebThreadGetCurrentDOMMouseMoveEventListeners();
else if (eventType == mouseupEvent || eventType == mousedownEvent || eventType == clickEvent)
listeners = WebThreadGetCurrentDOMMouseClickEventListeners();
if(listeners) listeners->set(this, listeners->contains(this) ? listeners->get(this) + 1 : 1);
}
void EventTargetNode::removeEventListener(const AtomicString &eventType, EventListener *listener, bool useCapture)
{
if (!m_regdListeners) return;
RegisteredEventListener rl(eventType, listener, useCapture);
RegisteredEventListenerList::Iterator end = m_regdListeners->end();
for (RegisteredEventListenerList::Iterator it = m_regdListeners->begin(); it != end; ++it)
if (*(*it).get() == rl) {
HashMap<Node *, int> * listeners = NULL;
if (eventType == mousewheelEvent)
listeners = WebThreadGetCurrentDOMMouseWheelEventListeners();
else if (eventType == mousemoveEvent || eventType == mouseoverEvent || eventType == mouseoutEvent)
listeners = WebThreadGetCurrentDOMMouseMoveEventListeners();
else if (eventType == mouseupEvent || eventType == mousedownEvent || eventType == clickEvent)
listeners = WebThreadGetCurrentDOMMouseClickEventListeners();
if (listeners) {
int count = listeners->get(this) - 1;
if (!count) listeners->remove(this);
else listeners->set(this, count);
}
if (this == document() && eventType == scrollEvent)
document()->decrementScrollEventListenersCount();
(*it)->setRemoved(true);
it = m_regdListeners->remove(it);
if (m_regdListeners->isEmpty() && !inDocument())
document()->unregisterDisconnectedNodeWithEventListeners(this);
return;
}
}
void EventTargetNode::removeAllEventListeners()
{
WebThreadGetCurrentDOMMouseMoveEventListeners()->remove(this);
WebThreadGetCurrentDOMMouseWheelEventListeners()->remove(this);
WebThreadGetCurrentDOMMouseClickEventListeners()->remove(this);
delete m_regdListeners;
m_regdListeners = 0;
}
void EventTargetNode::handleLocalEvents(Event *evt, bool useCapture)
{
if (!m_regdListeners)
return;
if (disabled() && evt->isMouseEvent())
return;
RegisteredEventListenerList listenersCopy = *m_regdListeners;
RegisteredEventListenerList::Iterator end = listenersCopy.end();
for (RegisteredEventListenerList::Iterator it = listenersCopy.begin(); it != end; ++it)
if ((*it)->eventType() == evt->type() && (*it)->useCapture() == useCapture && !(*it)->removed())
(*it)->listener()->handleEvent(evt, false);
}
bool EventTargetNode::dispatchGenericEvent(PassRefPtr<Event> e, ExceptionCode&, bool tempEvent)
{
RefPtr<Event> evt(e);
assert(!eventDispatchForbidden());
assert(evt->target());
DeprecatedPtrList<Node> nodeChain;
Node *n;
for (n = this; n; n = n->parentNode()) {
n->ref();
nodeChain.prepend(n);
}
DeprecatedPtrListIterator<Node> it(nodeChain);
void* data = preDispatchEventHandler(evt.get());
evt->setEventPhase(Event::CAPTURING_PHASE);
it.toFirst();
if (evt->type() != loadEvent && it.current()->isDocumentNode() && !evt->propagationStopped())
static_cast<Document*>(it.current())->handleWindowEvent(evt.get(), true);
for (; it.current() && it.current() != this && !evt->propagationStopped(); ++it) {
evt->setCurrentTarget(it.current());
EventTargetNodeCast(it.current())->handleLocalEvents(evt.get(), true);
}
it.toLast();
if (!evt->propagationStopped()) {
evt->setEventPhase(Event::AT_TARGET);
evt->setCurrentTarget(it.current());
EventTargetNodeCast(it.current())->handleLocalEvents(evt.get(), true);
EventTargetNodeCast(it.current())->handleLocalEvents(evt.get(), false);
}
--it;
if (evt->bubbles()) {
evt->setEventPhase(Event::BUBBLING_PHASE);
for (; it.current() && !evt->propagationStopped() && !evt->getCancelBubble(); --it) {
evt->setCurrentTarget(it.current());
EventTargetNodeCast(it.current())->handleLocalEvents(evt.get(), false);
}
it.toFirst();
if (evt->type() != loadEvent && it.current()->isDocumentNode() && !evt->propagationStopped() && !evt->getCancelBubble()) {
evt->setCurrentTarget(it.current());
static_cast<Document*>(it.current())->handleWindowEvent(evt.get(), false);
}
}
evt->setCurrentTarget(0);
evt->setEventPhase(0);
postDispatchEventHandler(evt.get(), data);
it.toLast();
if (evt->bubbles())
for (; it.current() && !evt->defaultPrevented() && !evt->defaultHandled(); --it)
EventTargetNodeCast(it.current())->defaultEventHandler(evt.get());
else if (!evt->defaultPrevented() && !evt->defaultHandled())
EventTargetNodeCast(it.current())->defaultEventHandler(evt.get());
it.toFirst();
for (; it.current(); ++it)
it.current()->deref();
Document::updateDocumentsRendering();
Frame *frame = document()->frame();
if (tempEvent && frame && frame->jScript())
frame->jScript()->finishedWithEvent(evt.get());
return !evt->defaultPrevented(); }
bool EventTargetNode::dispatchEvent(PassRefPtr<Event> e, ExceptionCode& ec, bool tempEvent)
{
RefPtr<Event> evt(e);
assert(!eventDispatchForbidden());
if (!evt || evt->type().isEmpty()) {
ec = UNSPECIFIED_EVENT_TYPE_ERR;
return false;
}
evt->setTarget(this);
RefPtr<FrameView> view = document()->view();
return dispatchGenericEvent(evt.release(), ec, tempEvent);
}
bool EventTargetNode::dispatchSubtreeModifiedEvent(bool sendChildrenChanged)
{
assert(!eventDispatchForbidden());
if (sendChildrenChanged) {
notifyNodeListsChildrenChanged();
childrenChanged();
} else
notifyNodeListsAttributeChanged();
if (!document()->hasListenerType(Document::DOMSUBTREEMODIFIED_LISTENER))
return false;
ExceptionCode ec = 0;
return dispatchEvent(new MutationEvent(DOMSubtreeModifiedEvent,
true,false,0,String(),String(),String(),0),ec,true);
}
void EventTargetNode::dispatchWindowEvent(const AtomicString &eventType, bool canBubbleArg, bool cancelableArg)
{
assert(!eventDispatchForbidden());
ExceptionCode ec = 0;
RefPtr<Event> evt = new Event(eventType, canBubbleArg, cancelableArg);
RefPtr<Document> doc = document();
evt->setTarget(doc.get());
doc->handleWindowEvent(evt.get(), true);
doc->handleWindowEvent(evt.get(), false);
if (eventType == loadEvent) {
Element* ownerElement = doc->ownerElement();
if (ownerElement) {
RefPtr<Event> ownerEvent = new Event(eventType, false, cancelableArg);
ownerEvent->setTarget(ownerElement);
ownerElement->dispatchGenericEvent(ownerEvent.release(), ec, true);
}
}
}
bool EventTargetNode::dispatchUIEvent(const AtomicString &eventType, int detail)
{
assert(!eventDispatchForbidden());
assert(eventType == DOMFocusInEvent || eventType == DOMFocusOutEvent || eventType == DOMActivateEvent);
bool cancelable = eventType == DOMActivateEvent;
ExceptionCode ec = 0;
UIEvent* evt = new UIEvent(eventType, true, cancelable, document()->defaultView(), detail);
return dispatchEvent(evt, ec, true);
}
bool EventTargetNode::dispatchKeyEvent(const PlatformKeyboardEvent& key)
{
assert(!eventDispatchForbidden());
ExceptionCode ec = 0;
RefPtr<KeyboardEvent> keyboardEvent = new KeyboardEvent(key, document()->defaultView());
bool r = dispatchEvent(keyboardEvent,ec,true);
if (keyboardEvent->defaultHandled())
r = false;
return r;
}
bool EventTargetNode::dispatchMouseEvent(const PlatformMouseEvent& _mouse, const AtomicString& eventType,
int detail, Node* relatedTarget)
{
assert(!eventDispatchForbidden());
IntPoint contentsPos;
if (FrameView* view = document()->view())
contentsPos = view->viewportToContents(_mouse.pos());
return dispatchMouseEvent(eventType, _mouse.button(), detail,
contentsPos.x(), contentsPos.y(), _mouse.globalX(), _mouse.globalY(),
_mouse.ctrlKey(), _mouse.altKey(), _mouse.shiftKey(), _mouse.metaKey(),
false, relatedTarget);
}
bool EventTargetNode::dispatchSimulatedMouseEvent(const AtomicString &eventType)
{
assert(!eventDispatchForbidden());
return dispatchMouseEvent(eventType, 0, 0, 0, 0, 0, 0, false, false, false, false, true);
}
bool EventTargetNode::dispatchMouseEvent(const AtomicString& eventType, int button, int detail,
int pageX, int pageY, int screenX, int screenY,
bool ctrlKey, bool altKey, bool shiftKey, bool metaKey,
bool isSimulated, Node* relatedTargetArg)
{
assert(!eventDispatchForbidden());
if (disabled()) return true;
if (eventType.isEmpty())
return false;
RefPtr<Node> protect(this);
bool cancelable = eventType != mousemoveEvent;
ExceptionCode ec = 0;
bool swallowEvent = false;
EventTargetNode *relatedTarget = (relatedTargetArg && relatedTargetArg->isEventTargetNode()) ? static_cast<EventTargetNode*>(relatedTargetArg) : 0;
RefPtr<Event> me = new MouseEvent(eventType, true, cancelable, document()->defaultView(),
detail, screenX, screenY, pageX, pageY,
ctrlKey, altKey, shiftKey, metaKey, button,
relatedTarget, 0, isSimulated);
dispatchEvent(me, ec, true);
bool defaultHandled = me->defaultHandled();
bool defaultPrevented = me->defaultPrevented();
if (defaultHandled || defaultPrevented)
swallowEvent = true;
if (eventType == clickEvent && detail == 2) {
me = new MouseEvent(dblclickEvent, true, cancelable, document()->defaultView(),
detail, screenX, screenY, pageX, pageY,
ctrlKey, altKey, shiftKey, metaKey, button,
relatedTarget, 0, isSimulated);
if (defaultHandled)
me->setDefaultHandled();
dispatchEvent(me, ec, true);
if (me->defaultHandled() || me->defaultPrevented())
swallowEvent = true;
}
if (eventType == clickEvent && !defaultPrevented)
dispatchUIEvent(DOMActivateEvent, detail);
return swallowEvent;
}
void EventTargetNode::dispatchWheelEvent(PlatformWheelEvent& e)
{
assert(!eventDispatchForbidden());
if (e.delta() == 0)
return;
FrameView* view = document()->view();
if (!view)
return;
IntPoint pos = view->viewportToContents(e.pos());
RefPtr<WheelEvent> we = new WheelEvent(e.isHorizontal(), e.delta(),
document()->defaultView(), e.globalX(), e.globalY(), pos.x(), pos.y(),
e.ctrlKey(), e.altKey(), e.shiftKey(), e.metaKey());
ExceptionCode ec = 0;
if (!dispatchEvent(we, ec, true))
e.accept();
}
void EventTargetNode::dispatchFocusEvent()
{
dispatchHTMLEvent(focusEvent, false, false);
}
void EventTargetNode::dispatchBlurEvent()
{
dispatchHTMLEvent(blurEvent, false, false);
}
bool EventTargetNode::dispatchHTMLEvent(const AtomicString &eventType, bool canBubbleArg, bool cancelableArg)
{
assert(!eventDispatchForbidden());
ExceptionCode ec = 0;
return dispatchEvent(new Event(eventType, canBubbleArg, cancelableArg), ec, true);
}
void EventTargetNode::removeHTMLEventListener(const AtomicString &eventType)
{
if (!m_regdListeners) return;
RegisteredEventListenerList::Iterator end = m_regdListeners->end();
for (RegisteredEventListenerList::Iterator it = m_regdListeners->begin(); it != end; ++it)
if ((*it)->eventType() == eventType && (*it)->listener()->isHTMLEventListener()) {
it = m_regdListeners->remove(it);
if (m_regdListeners->isEmpty() && !inDocument())
document()->unregisterDisconnectedNodeWithEventListeners(this);
return;
}
}
void EventTargetNode::setHTMLEventListener(const AtomicString &eventType, PassRefPtr<EventListener> listener)
{
removeHTMLEventListener(eventType);
if (listener)
addEventListener(eventType, listener.get(), false);
}
EventListener *EventTargetNode::getHTMLEventListener(const AtomicString &eventType)
{
if (!m_regdListeners)
return 0;
RegisteredEventListenerList::Iterator end = m_regdListeners->end();
for (RegisteredEventListenerList::Iterator it = m_regdListeners->begin(); it != end; ++it)
if ((*it)->eventType() == eventType && (*it)->listener()->isHTMLEventListener())
return (*it)->listener();
return 0;
}
bool EventTargetNode::disabled() const
{
return false;
}
void EventTargetNode::defaultEventHandler(Event *evt)
{
}
#ifndef NDEBUG
void EventTargetNode::dump(TextStream* stream, DeprecatedString ind) const
{
if (m_regdListeners)
*stream << " #regdListeners=" << m_regdListeners->count();
Node::dump(stream,ind);
}
void forbidEventDispatch()
{
++gEventDispatchForbidden;
}
void allowEventDispatch()
{
if (gEventDispatchForbidden > 0)
--gEventDispatchForbidden;
}
bool eventDispatchForbidden()
{
return gEventDispatchForbidden > 0;
}
#endif
bool EventTargetNode::willRespondToMouseMoveEvents()
{
return Node::willRespondToMouseMoveEvents() || WebThreadGetCurrentDOMMouseMoveEventListeners()->contains(this);
}
bool EventTargetNode::willRespondToMouseWheelEvents()
{
return Node::willRespondToMouseWheelEvents() || WebThreadGetCurrentDOMMouseWheelEventListeners()->contains(this);
}
bool EventTargetNode::willRespondToMouseClickEvents()
{
return Node::willRespondToMouseClickEvents() || WebThreadGetCurrentDOMMouseClickEventListeners()->contains(this);
}
}