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// Copyright (c) 2008, 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 "JSNSResolver.h"
#include "v8_proxy.h"
#include "v8_binding.h"
#include "ExceptionContext.h"
#include "PlatformString.h"
namespace WebCore {
JSNSResolver::JSNSResolver(v8::Handle<v8::Object> resolver)
: m_resolver(resolver)
{
}
JSNSResolver::~JSNSResolver()
{
}
String JSNSResolver::lookupNamespaceURI(ExceptionContext* exceptionContext,
const String& prefix)
{
v8::Handle<v8::Function> lookupNamespaceURIFunc;
v8::Handle<v8::String> lookupNamespaceURIName =
v8::String::New("lookupNamespaceURI");
// Check if the resolver has a function property named lookupNamespaceURI.
if (m_resolver->Has(lookupNamespaceURIName)) {
// In case the property is a getter that throws an error,
// see LayoutTests/fast/dom/SelectorAPI/NSResolver-exceptions.xhtml
ExceptionCatcher exceptionCatcher(exceptionContext);
v8::Handle<v8::Value> lookupNamespaceURI = m_resolver->Get(
lookupNamespaceURIName);
if (exceptionContext->hadException())
return String();
if (lookupNamespaceURI->IsFunction()) {
lookupNamespaceURIFunc = v8::Handle<v8::Function>::Cast(
lookupNamespaceURI);
}
}
if (lookupNamespaceURIFunc.IsEmpty() && !m_resolver->IsFunction()) {
Frame* frame = ScriptController::retrieveActiveFrame();
log_info(frame, "NSResolver does not have a lookupNamespaceURI method.",
String());
return String();
}
// Catch exceptions from calling the namespace resolver.
ExceptionCatcher exceptionCatcher(exceptionContext);
const int argc = 1;
v8::Handle<v8::Value> argv[argc] = { v8String(prefix) };
v8::Handle<v8::Function> function = lookupNamespaceURIFunc.IsEmpty()
? v8::Handle<v8::Function>::Cast(m_resolver)
: lookupNamespaceURIFunc;
V8Proxy* proxy = V8Proxy::retrieve();
v8::Handle<v8::Value> retval = proxy->CallFunction(function, m_resolver,
argc, argv);
// Eat exceptions from namespace resolver and return an empty string. This
// will cause NAMESPACE_ERR.
if (exceptionContext->hadException())
return String();
return valueToStringWithNullOrUndefinedCheck(retval);
}
}
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