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/*
* Copyright (C) 2008, 2009 Google Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* 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
* distribution.
* * Neither the name of Google Inc. nor the names of its
* 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
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#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();
}
} // namespace WebCore
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