| // 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 "bindings/core/v8/custom/V8CustomXPathNSResolver.h" |
| |
| #include "bindings/core/v8/ScriptController.h" |
| #include "bindings/core/v8/V8Binding.h" |
| #include "core/dom/ExecutionContext.h" |
| #include "core/frame/FrameConsole.h" |
| #include "core/frame/FrameHost.h" |
| #include "core/frame/LocalDOMWindow.h" |
| #include "core/frame/LocalFrame.h" |
| #include "core/inspector/ConsoleMessage.h" |
| #include "wtf/text/WTFString.h" |
| |
| namespace blink { |
| |
| V8CustomXPathNSResolver* V8CustomXPathNSResolver::create( |
| ScriptState* scriptState, |
| v8::Local<v8::Object> resolver) { |
| return new V8CustomXPathNSResolver(scriptState, resolver); |
| } |
| |
| V8CustomXPathNSResolver::V8CustomXPathNSResolver(ScriptState* scriptState, |
| v8::Local<v8::Object> resolver) |
| : m_scriptState(scriptState), m_resolver(resolver) {} |
| |
| AtomicString V8CustomXPathNSResolver::lookupNamespaceURI(const String& prefix) { |
| v8::Isolate* isolate = m_scriptState->isolate(); |
| v8::Local<v8::Function> lookupNamespaceURIFunc; |
| v8::Local<v8::String> lookupNamespaceURIName = |
| v8AtomicString(isolate, "lookupNamespaceURI"); |
| |
| // Check if the resolver has a function property named lookupNamespaceURI. |
| v8::Local<v8::Value> lookupNamespaceURI; |
| if (m_resolver->Get(m_scriptState->context(), lookupNamespaceURIName) |
| .ToLocal(&lookupNamespaceURI) && |
| lookupNamespaceURI->IsFunction()) |
| lookupNamespaceURIFunc = v8::Local<v8::Function>::Cast(lookupNamespaceURI); |
| |
| if (lookupNamespaceURIFunc.IsEmpty() && !m_resolver->IsFunction()) { |
| LocalFrame* frame = |
| toLocalDOMWindow(toDOMWindow(m_scriptState->context()))->frame(); |
| if (frame && frame->host()) |
| frame->console().addMessage(ConsoleMessage::create( |
| JSMessageSource, ErrorMessageLevel, |
| "XPathNSResolver does not have a lookupNamespaceURI method.")); |
| return nullAtom; |
| } |
| |
| // Catch exceptions from calling the namespace resolver. |
| v8::TryCatch tryCatch(isolate); |
| tryCatch.SetVerbose(true); // Print exceptions to console. |
| |
| const int argc = 1; |
| v8::Local<v8::Value> argv[argc] = {v8String(isolate, prefix)}; |
| v8::Local<v8::Function> function = |
| lookupNamespaceURIFunc.IsEmpty() |
| ? v8::Local<v8::Function>::Cast(m_resolver) |
| : lookupNamespaceURIFunc; |
| |
| v8::Local<v8::Value> retval; |
| // Eat exceptions from namespace resolver and return an empty string. This |
| // will most likely cause NamespaceError. |
| if (!V8ScriptRunner::callFunction( |
| function, toExecutionContext(m_scriptState->context()), m_resolver, |
| argc, argv, isolate) |
| .ToLocal(&retval)) |
| return nullAtom; |
| |
| TOSTRING_DEFAULT(V8StringResource<TreatNullAsNullString>, returnString, |
| retval, nullAtom); |
| return returnString; |
| } |
| |
| DEFINE_TRACE(V8CustomXPathNSResolver) { |
| XPathNSResolver::trace(visitor); |
| } |
| |
| } // namespace blink |