/platform/external/webkit/WebCore/bindings/v8/V8NodeFilterCondition.cpp
https://github.com/aharish/totoro-gb-opensource-update2 · C++ · 90 lines · 45 code · 16 blank · 29 comment · 2 complexity · 45c57abe28470cdf48d783cf10abe6ca MD5 · raw file
- /*
- * 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->IsFunction())
- return NodeFilter::FILTER_ACCEPT;
- v8::TryCatch exceptionCatcher;
- v8::Handle<v8::Object> object = v8::Context::GetCurrent()->Global();
- v8::Handle<v8::Function> callback = v8::Handle<v8::Function>::Cast(m_filter);
- OwnArrayPtr<v8::Handle<v8::Value> > args(new v8::Handle<v8::Value>[1]);
- args[0] = toV8(node);
- V8Proxy* proxy = V8Proxy::retrieve();
- ASSERT(proxy);
- v8::Handle<v8::Value> result = proxy->callFunction(callback, object, 1, args.get());
- if (exceptionCatcher.HasCaught()) {
- state->setException(exceptionCatcher.Exception());
- return NodeFilter::FILTER_REJECT;
- }
- ASSERT(!result.IsEmpty());
- return result->Int32Value();
- }
- } // namespace WebCore