V8NodeFilterCondition.cpp [plain text]
#include "config.h"
#include "V8NodeFilterCondition.h"
#include "Node.h"
#include "NodeFilter.h"
#include "ScriptState.h"
#include "V8Node.h"
#include "V8Proxy.h"
#include <wtf/OwnArrayPtr.h>
namespace WebCore {
V8NodeFilterCondition::V8NodeFilterCondition(v8::Handle<v8::Value> filter)
: m_filter(v8::Persistent<v8::Value>::New(filter))
{
#ifndef NDEBUG
V8GCController::registerGlobalHandle(NODE_FILTER, this, m_filter);
#endif
}
V8NodeFilterCondition::~V8NodeFilterCondition()
{
#ifndef NDEBUG
V8GCController::unregisterGlobalHandle(this, m_filter);
#endif
m_filter.Dispose();
m_filter.Clear();
}
short V8NodeFilterCondition::acceptNode(ScriptState* state, Node* node) const
{
ASSERT(v8::Context::InContext());
if (!m_filter->IsObject())
return NodeFilter::FILTER_ACCEPT;
v8::TryCatch exceptionCatcher;
v8::Handle<v8::Function> callback;
if (m_filter->IsFunction())
callback = v8::Handle<v8::Function>::Cast(m_filter);
else {
v8::Local<v8::Value> value = m_filter->ToObject()->Get(v8::String::New("acceptNode"));
if (!value->IsFunction()) {
V8Proxy::throwError(V8Proxy::TypeError, "NodeFilter object does not have an acceptNode function");
return NodeFilter::FILTER_REJECT;
}
callback = v8::Handle<v8::Function>::Cast(value);
}
v8::Handle<v8::Object> object = v8::Context::GetCurrent()->Global();
OwnArrayPtr<v8::Handle<v8::Value> > args = adoptArrayPtr(new v8::Handle<v8::Value>[1]);
args[0] = toV8(node);
v8::Handle<v8::Value> result = V8Proxy::callFunctionWithoutFrame(callback, object, 1, args.get());
if (exceptionCatcher.HasCaught()) {
state->setException(exceptionCatcher.Exception());
return NodeFilter::FILTER_REJECT;
}
ASSERT(!result.IsEmpty());
return result->Int32Value();
}
}