Use V8 bindings for V8CustomXPathNSResolver in svn.webkit.org

webkit/port/bindings/v8/JSXPathNSResolver.cpp

-// 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 "JSXPathNSResolver.h"
-
-#if ENABLE(XPATH)
-
-#include "v8_proxy.h"
-#include "v8_binding.h"
-#include "PlatformString.h"
-
-namespace WebCore {
-
-JSXPathNSResolver::JSXPathNSResolver(v8::Handle<v8::Object> resolver)
-: m_resolver(resolver) {
-}
-
-JSXPathNSResolver::~JSXPathNSResolver() {
-}
-
-String JSXPathNSResolver::lookupNamespaceURI(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)) {
-    v8::Handle<v8::Value> lookupNamespaceURI = m_resolver->Get(lookupNamespaceURIName);
-    if (lookupNamespaceURI->IsFunction()) {
-      lookupNamespaceURIFunc = v8::Handle<v8::Function>::Cast(lookupNamespaceURI);
-    }
-  }
-
-  if (lookupNamespaceURIFunc.IsEmpty() && !m_resolver->IsFunction()) {
-    Frame* frame = V8Proxy::retrieveFrameForEnteredContext();
-    log_info(frame, "XPathNSResolver does not have a lookupNamespaceURI method.", String());
-    return String();
-  }
-
-  // Catch exceptions from calling the namespace resolver.
-  v8::TryCatch try_catch;
-  try_catch.SetVerbose(true);  // Print exceptions to console.
-
-  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 most likely cause NAMESPACE_ERR.
-  if (try_catch.HasCaught()) {
-    return String();
-  }
-
-  return valueToStringWithNullCheck(retval);
-}
-
-}
-
-#endif // ENABLE(XPATH)