/*
* Copyright (C) 2007-2009 Google Inc. All rights reserved.
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* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
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* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#include "Node.h"
#include "Document.h"
#include "EventListener.h"
#include "V8AbstractEventListener.h"
#include "V8Binding.h"
#include "V8CustomBinding.h"
#include "V8CustomEventListener.h"
#include "V8Node.h"
#include "V8ObjectEventListener.h"
#include "V8Proxy.h"
#include <wtf/RefPtr.h>
namespace WebCore {
static inline String toEventType(v8::Local<v8::String> value)
{
String key = toWebCoreString(value);
ASSERT(key.startsWith("on"));
return key.substring(2);
}
static PassRefPtr<EventListener> getEventListener(Node* node, v8::Local<v8::Value> value, bool isAttribute, bool findOnly)
{
V8Proxy* proxy = V8Proxy::retrieve(node->scriptExecutionContext());
// The document might be created using createDocument, which does
// not have a frame, use the active frame.
if (!proxy)
proxy = V8Proxy::retrieve(V8Proxy::retrieveFrameForEnteredContext());
if (proxy) {
V8EventListenerList* list = proxy->objectListeners();
return findOnly ? list->findWrapper(value, isAttribute) : list->findOrCreateWrapper<V8ObjectEventListener>(proxy->frame(), value, isAttribute);
}
return 0;
}
ACCESSOR_SETTER(NodeEventHandler)
{
Node* node = V8DOMWrapper::convertDOMWrapperToNode<Node>(info.Holder());
String eventType = toEventType(name);
// Remove hidden dependency on the old event handler.
if (EventListener* listener = node->getAttributeEventListener(eventType)) {
if (static_cast<V8AbstractEventListener*>(listener)->isObjectListener()) {
v8::Local<v8::Object> v8Listener = static_cast<V8ObjectEventListener*>(listener)->getListenerObject();
removeHiddenDependency(info.Holder(), v8Listener, V8Custom::kNodeEventListenerCacheIndex);
}
}
// Set handler if the value is a function.
if (value->IsFunction()) {
RefPtr<EventListener> listener = getEventListener(node, value, true, false);
if (listener) {
node->setAttributeEventListener(eventType, listener);
createHiddenDependency(info.Holder(), value, V8Custom::kNodeEventListenerCacheIndex);
}
} else {
// Otherwise, clear the handler.
node->clearAttributeEventListener(eventType);
}
}
ACCESSOR_GETTER(NodeEventHandler)
{
Node* node = V8DOMWrapper::convertDOMWrapperToNode<Node>(info.Holder());
EventListener* listener = node->getAttributeEventListener(toEventType(name));
return V8DOMWrapper::convertEventListenerToV8Object(listener);
}
CALLBACK_FUNC_DECL(NodeAddEventListener)
{
INC_STATS("DOM.Node.addEventListener()");
Node* node = V8DOMWrapper::convertDOMWrapperToNode<Node>(args.Holder());
RefPtr<EventListener> listener = getEventListener(node, args[1], false, false);
if (listener) {
String type = toWebCoreString(args[0]);
bool useCapture = args[2]->BooleanValue();
node->addEventListener(type, listener, useCapture);
createHiddenDependency(args.Holder(), args[1], V8Custom::kNodeEventListenerCacheIndex);
}
return v8::Undefined();
}
CALLBACK_FUNC_DECL(NodeRemoveEventListener)
{
INC_STATS("DOM.Node.removeEventListener()");
Node* node = V8DOMWrapper::convertDOMWrapperToNode<Node>(args.Holder());
// It is possbile that the owner document of the node is detached
// from the frame.
// See issue http://b/878909
RefPtr<EventListener> listener = getEventListener(node, args[1], false, true);
if (listener) {
String type = toWebCoreString(args[0]);
bool useCapture = args[2]->BooleanValue();
node->removeEventListener(type, listener.get(), useCapture);
removeHiddenDependency(args.Holder(), args[1], V8Custom::kNodeEventListenerCacheIndex);
}
return v8::Undefined();
}
// This function is customized to take advantage of the optional 4th argument: shouldLazyAttach
CALLBACK_FUNC_DECL(NodeInsertBefore)
{
INC_STATS("DOM.Node.insertBefore");
v8::Handle<v8::Object> holder = args.Holder();
Node* imp = V8DOMWrapper::convertDOMWrapperToNode<Node>(holder);
ExceptionCode ec = 0;
Node* newChild = V8Node::HasInstance(args[0]) ? V8DOMWrapper::convertDOMWrapperToNode<Node>(v8::Handle<v8::Object>::Cast(args[0])) : 0;
Node* refChild = V8Node::HasInstance(args[1]) ? V8DOMWrapper::convertDOMWrapperToNode<Node>(v8::Handle<v8::Object>::Cast(args[1])) : 0;
bool success = imp->insertBefore(newChild, refChild, ec, true);
if (ec) {
V8Proxy::setDOMException(ec);
return v8::Handle<v8::Value>();
}
if (success)
return args[0];
return v8::Null();
}
// This function is customized to take advantage of the optional 4th argument: shouldLazyAttach
CALLBACK_FUNC_DECL(NodeReplaceChild)
{
INC_STATS("DOM.Node.replaceChild");
v8::Handle<v8::Object> holder = args.Holder();
Node* imp = V8DOMWrapper::convertDOMWrapperToNode<Node>(holder);
ExceptionCode ec = 0;
Node* newChild = V8Node::HasInstance(args[0]) ? V8DOMWrapper::convertDOMWrapperToNode<Node>(v8::Handle<v8::Object>::Cast(args[0])) : 0;
Node* oldChild = V8Node::HasInstance(args[1]) ? V8DOMWrapper::convertDOMWrapperToNode<Node>(v8::Handle<v8::Object>::Cast(args[1])) : 0;
bool success = imp->replaceChild(newChild, oldChild, ec, true);
if (ec) {
V8Proxy::setDOMException(ec);
return v8::Handle<v8::Value>();
}
if (success)
return args[1];
return v8::Null();
}
CALLBACK_FUNC_DECL(NodeRemoveChild)
{
INC_STATS("DOM.Node.removeChild");
v8::Handle<v8::Object> holder = args.Holder();
Node* imp = V8DOMWrapper::convertDOMWrapperToNode<Node>(holder);
ExceptionCode ec = 0;
Node* oldChild = V8Node::HasInstance(args[0]) ? V8DOMWrapper::convertDOMWrapperToNode<Node>(v8::Handle<v8::Object>::Cast(args[0])) : 0;
bool success = imp->removeChild(oldChild, ec);
if (ec) {
V8Proxy::setDOMException(ec);
return v8::Handle<v8::Value>();
}
if (success)
return args[0];
return v8::Null();
}
// This function is customized to take advantage of the optional 4th argument: shouldLazyAttach
CALLBACK_FUNC_DECL(NodeAppendChild)
{
INC_STATS("DOM.Node.appendChild");
v8::Handle<v8::Object> holder = args.Holder();
Node* imp = V8DOMWrapper::convertDOMWrapperToNode<Node>(holder);
ExceptionCode ec = 0;
Node* newChild = V8Node::HasInstance(args[0]) ? V8DOMWrapper::convertDOMWrapperToNode<Node>(v8::Handle<v8::Object>::Cast(args[0])) : 0;
bool success = imp->appendChild(newChild, ec, true );
if (ec) {
V8Proxy::setDOMException(ec);
return v8::Handle<v8::Value>();
}
if (success)
return args[0];
return v8::Null();
}
} // namespace WebCore