691 lines
16 KiB
C++
691 lines
16 KiB
C++
// Copyright (c) 2009 The Chromium Embedded Framework Authors. All rights
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// reserved. Use of this source code is governed by a BSD-style license that
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// can be found in the LICENSE file.
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#include "v8_impl.h"
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#include "cef_context.h"
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#include "tracker.h"
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#include "base/lazy_instance.h"
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#include "base/utf_string_conversions.h"
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#include "third_party/WebKit/WebKit/chromium/public/WebKit.h"
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#include "third_party/WebKit/WebKit/chromium/public/WebScriptController.h"
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// Memory manager.
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base::LazyInstance<CefTrackManager> g_v8_tracker(base::LINKER_INITIALIZED);
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class TrackBase : public CefTrackObject
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{
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public:
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TrackBase(CefBase* base) { base_ = base; }
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protected:
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CefRefPtr<CefBase> base_;
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};
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class TrackString : public CefTrackObject
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{
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public:
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TrackString(const std::string& str) : string_(str) {}
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const char* GetString() { return string_.c_str(); }
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private:
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std::string string_;
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};
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static void TrackAdd(CefTrackObject* object)
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{
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g_v8_tracker.Pointer()->Add(object);
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}
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static void TrackDelete(CefTrackObject* object)
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{
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g_v8_tracker.Pointer()->Delete(object);
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}
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// Callback for weak persistent reference destruction.
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static void TrackDestructor(v8::Persistent<v8::Value> object,
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void* parameter)
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{
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if(parameter)
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TrackDelete(static_cast<CefTrackObject*>(parameter));
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object.Dispose();
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object.Clear();
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}
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// Convert a wide string to a V8 string.
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static v8::Handle<v8::String> GetV8String(const std::wstring& str)
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{
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return v8::String::New(
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reinterpret_cast<const uint16_t*>(str.c_str()), str.length());
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}
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// Convert a V8 string to a wide string.
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static std::wstring GetWString(v8::Handle<v8::String> str)
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{
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uint16_t* buf = new uint16_t[str->Length()+1];
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str->Write(buf);
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std::wstring value = reinterpret_cast<wchar_t*>(buf);
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delete [] buf;
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return value;
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}
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// V8 function callback
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static v8::Handle<v8::Value> FunctionCallbackImpl(const v8::Arguments& args)
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{
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v8::HandleScope handle_scope;
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CefV8Handler* handler =
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static_cast<CefV8Handler*>(v8::External::Unwrap(args.Data()));
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CefV8ValueList params;
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for(int i = 0; i < args.Length(); i++)
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params.push_back(new CefV8ValueImpl(args[i]));
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std::wstring func_name =
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GetWString(v8::Handle<v8::String>::Cast(args.Callee()->GetName()));
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CefRefPtr<CefV8Value> object = new CefV8ValueImpl(args.This());
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CefRefPtr<CefV8Value> retval;
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std::wstring exception;
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v8::Handle<v8::Value> value = v8::Null();
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if(handler->Execute(func_name, object, params, retval, exception)) {
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if(!exception.empty())
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value = v8::ThrowException(GetV8String(exception));
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else {
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CefV8ValueImpl* rv = static_cast<CefV8ValueImpl*>(retval.get());
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if(rv)
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value = rv->GetValue();
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}
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}
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return value;
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}
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// V8 extension registration.
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class ExtensionWrapper : public v8::Extension {
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public:
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ExtensionWrapper(const char* extension_name,
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const char* javascript_code,
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CefV8Handler* handler)
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: v8::Extension(extension_name, javascript_code), handler_(handler)
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{
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// The reference will be released when the application exits.
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TrackAdd(new TrackBase(handler));
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}
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virtual v8::Handle<v8::FunctionTemplate> GetNativeFunction(
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v8::Handle<v8::String> name)
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{
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return v8::FunctionTemplate::New(FunctionCallbackImpl,
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v8::External::New(handler_));
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}
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void UIT_RegisterExtension()
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{
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WebKit::WebScriptController::registerExtension(this);
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}
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void AddRef() {}
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void Release() {}
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static bool ImplementsThreadSafeReferenceCounting() { return true; }
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private:
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CefV8Handler* handler_;
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};
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bool CefRegisterExtension(const std::wstring& extension_name,
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const std::wstring& javascript_code,
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CefRefPtr<CefV8Handler> handler)
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{
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// Verify that the context is already initialized
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if(!_Context.get())
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return false;
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if(!handler.get())
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return false;
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TrackString* name = new TrackString(WideToUTF8(extension_name));
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TrackAdd(name);
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TrackString* code = new TrackString(WideToUTF8(javascript_code));
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TrackAdd(name);
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ExtensionWrapper* wrapper = new ExtensionWrapper(name->GetString(),
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code->GetString(), handler.get());
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CefThread::PostTask(CefThread::UI, FROM_HERE, NewRunnableMethod(wrapper,
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&ExtensionWrapper::UIT_RegisterExtension));
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return true;
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}
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// CefV8Value
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// static
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CefRefPtr<CefV8Value> CefV8Value::CreateUndefined()
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{
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v8::HandleScope handle_scope;
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return new CefV8ValueImpl(v8::Undefined());
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}
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// static
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CefRefPtr<CefV8Value> CefV8Value::CreateNull()
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{
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v8::HandleScope handle_scope;
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return new CefV8ValueImpl(v8::Null());
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}
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// static
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CefRefPtr<CefV8Value> CefV8Value::CreateBool(bool value)
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{
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v8::HandleScope handle_scope;
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return new CefV8ValueImpl(v8::Boolean::New(value));
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}
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// static
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CefRefPtr<CefV8Value> CefV8Value::CreateInt(int value)
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{
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v8::HandleScope handle_scope;
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return new CefV8ValueImpl(v8::Int32::New(value));
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}
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// static
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CefRefPtr<CefV8Value> CefV8Value::CreateDouble(double value)
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{
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v8::HandleScope handle_scope;
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return new CefV8ValueImpl(v8::Number::New(value));
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}
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// static
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CefRefPtr<CefV8Value> CefV8Value::CreateString(const std::wstring& value)
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{
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v8::HandleScope handle_scope;
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return new CefV8ValueImpl(GetV8String(value));
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}
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// static
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CefRefPtr<CefV8Value> CefV8Value::CreateObject(CefRefPtr<CefBase> user_data)
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{
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v8::HandleScope handle_scope;
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CefV8ValueImpl* impl = new CefV8ValueImpl();
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// Create the new V8 object.
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v8::Local<v8::Object> obj = v8::Object::New();
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TrackBase *tracker = NULL;
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if(user_data.get()) {
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// Attach the user data to the V8 object.
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v8::Local<v8::Value> data = v8::External::Wrap(user_data.get());
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obj->Set(v8::String::New("Cef::UserData"), data);
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// Provide a tracker object that will cause the user data reference to be
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// released when the V8 object is destroyed.
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tracker = new TrackBase(user_data);
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}
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// Attach to the CefV8ValueImpl.
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impl->Attach(obj, tracker);
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return impl;
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}
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// static
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CefRefPtr<CefV8Value> CefV8Value::CreateArray()
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{
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v8::HandleScope handle_scope;
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return new CefV8ValueImpl(v8::Array::New());
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}
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// static
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CefRefPtr<CefV8Value> CefV8Value::CreateFunction(const std::wstring& name,
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CefRefPtr<CefV8Handler> handler)
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{
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v8::HandleScope handle_scope;
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CefV8ValueImpl* impl = new CefV8ValueImpl();
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// Create a new V8 function template with one internal field.
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v8::Local<v8::FunctionTemplate> tmpl = v8::FunctionTemplate::New();
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v8::Local<v8::Value> data = v8::External::Wrap(handler.get());
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// Set the function handler callback.
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tmpl->SetCallHandler(FunctionCallbackImpl, data);
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// Retrieve the function object and set the name.
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v8::Local<v8::Function> func = tmpl->GetFunction();
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func->SetName(GetV8String(name));
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// Attach the handler instance to the V8 object.
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func->Set(v8::String::New("Cef::Handler"), data);
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// Attach to the CefV8ValueImpl and provide a tracker object that will cause
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// the handler reference to be released when the V8 object is destroyed.
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impl->Attach(func, new TrackBase(handler));
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return impl;
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}
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// CefV8ValueImpl
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CefV8ValueImpl::CefV8ValueImpl()
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: tracker_(NULL)
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{
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}
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CefV8ValueImpl::CefV8ValueImpl(v8::Handle<v8::Value> value,
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CefTrackObject* tracker)
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{
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Attach(value, tracker);
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}
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CefV8ValueImpl::~CefV8ValueImpl()
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{
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Detach();
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}
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bool CefV8ValueImpl::Attach(v8::Handle<v8::Value> value,
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CefTrackObject* tracker)
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{
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bool rv = false;
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Lock();
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if(v8_value_.IsEmpty()) {
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v8_value_ = v8::Persistent<v8::Value>::New(value);
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tracker_ = tracker;
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rv = true;
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}
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Unlock();
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return rv;
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}
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void CefV8ValueImpl::Detach()
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{
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Lock();
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if(tracker_)
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TrackAdd(tracker_);
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v8_value_.MakeWeak(tracker_, TrackDestructor);
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tracker_ = NULL;
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Unlock();
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}
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v8::Handle<v8::Value> CefV8ValueImpl::GetValue()
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{
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v8::HandleScope handle_scope;
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v8::Handle<v8::Value> rv;
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Lock();
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rv = v8_value_;
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Unlock();
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return rv;
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}
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bool CefV8ValueImpl::IsReservedKey(const std::wstring& key)
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{
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return (key.find(L"Cef::") == 0 || key.find(L"v8::") == 0);
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}
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bool CefV8ValueImpl::IsUndefined()
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{
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Lock();
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bool rv = v8_value_->IsUndefined();
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Unlock();
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return rv;
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}
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bool CefV8ValueImpl::IsNull()
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{
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Lock();
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bool rv = v8_value_->IsNull();
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Unlock();
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return rv;
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}
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bool CefV8ValueImpl::IsBool()
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{
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Lock();
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bool rv = (v8_value_->IsBoolean() || v8_value_->IsTrue()
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|| v8_value_->IsFalse());
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Unlock();
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return rv;
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}
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bool CefV8ValueImpl::IsInt()
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{
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Lock();
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bool rv = v8_value_->IsInt32();
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Unlock();
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return rv;
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}
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bool CefV8ValueImpl::IsDouble()
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{
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Lock();
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bool rv = (v8_value_->IsNumber() || v8_value_->IsDate());
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Unlock();
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return rv;
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}
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bool CefV8ValueImpl::IsString()
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{
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Lock();
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bool rv = v8_value_->IsString();
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Unlock();
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return rv;
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}
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bool CefV8ValueImpl::IsObject()
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{
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Lock();
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bool rv = v8_value_->IsObject();
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Unlock();
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return rv;
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}
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bool CefV8ValueImpl::IsArray()
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{
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Lock();
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bool rv = v8_value_->IsArray();
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Unlock();
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return rv;
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}
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bool CefV8ValueImpl::IsFunction()
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{
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Lock();
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bool rv = v8_value_->IsFunction();
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Unlock();
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return rv;
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}
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bool CefV8ValueImpl::GetBoolValue()
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{
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bool rv = false;
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Lock();
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if(v8_value_->IsTrue())
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rv = true;
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else if(v8_value_->IsFalse())
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rv = false;
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else {
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v8::HandleScope handle_scope;
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v8::Local<v8::Boolean> val = v8_value_->ToBoolean();
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rv = val->Value();
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}
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Unlock();
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return rv;
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}
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int CefV8ValueImpl::GetIntValue()
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{
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int rv = 0;
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Lock();
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v8::HandleScope handle_scope;
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v8::Local<v8::Int32> val = v8_value_->ToInt32();
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rv = val->Value();
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Unlock();
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return rv;
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}
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double CefV8ValueImpl::GetDoubleValue()
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{
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double rv = 0.;
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Lock();
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v8::HandleScope handle_scope;
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v8::Local<v8::Number> val = v8_value_->ToNumber();
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rv = val->Value();
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Unlock();
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return rv;
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}
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std::wstring CefV8ValueImpl::GetStringValue()
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{
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std::wstring rv;
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Lock();
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v8::HandleScope handle_scope;
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rv = GetWString(v8_value_->ToString());
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Unlock();
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return rv;
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}
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bool CefV8ValueImpl::HasValue(const std::wstring& key)
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{
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if(IsReservedKey(key))
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return false;
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bool rv = false;
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Lock();
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if(v8_value_->IsObject()) {
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v8::HandleScope handle_scope;
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v8::Local<v8::Object> obj = v8_value_->ToObject();
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rv = obj->Has(GetV8String(key));
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}
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Unlock();
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return rv;
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}
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bool CefV8ValueImpl::HasValue(int index)
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{
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bool rv = false;
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Lock();
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if(v8_value_->IsObject()) {
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v8::HandleScope handle_scope;
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v8::Local<v8::Object> obj = v8_value_->ToObject();
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rv = obj->Has(index);
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}
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Unlock();
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return rv;
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}
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bool CefV8ValueImpl::DeleteValue(const std::wstring& key)
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{
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if(IsReservedKey(key))
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return false;
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bool rv = false;
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Lock();
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if(v8_value_->IsObject()) {
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v8::HandleScope handle_scope;
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v8::Local<v8::Object> obj = v8_value_->ToObject();
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rv = obj->Delete(GetV8String(key));
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}
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Unlock();
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return rv;
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}
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bool CefV8ValueImpl::DeleteValue(int index)
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{
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bool rv = false;
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Lock();
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if(v8_value_->IsObject()) {
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v8::HandleScope handle_scope;
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v8::Local<v8::Object> obj = v8_value_->ToObject();
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rv = obj->Delete(index);
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}
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Unlock();
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return rv;
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}
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CefRefPtr<CefV8Value> CefV8ValueImpl::GetValue(const std::wstring& key)
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{
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if(IsReservedKey(key))
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return false;
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CefRefPtr<CefV8Value> rv;
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Lock();
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if(v8_value_->IsObject()) {
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v8::HandleScope handle_scope;
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v8::Local<v8::Object> obj = v8_value_->ToObject();
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rv = new CefV8ValueImpl(obj->Get(GetV8String(key)));
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}
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Unlock();
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return rv;
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}
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CefRefPtr<CefV8Value> CefV8ValueImpl::GetValue(int index)
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{
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CefRefPtr<CefV8Value> rv;
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Lock();
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if(v8_value_->IsObject()) {
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v8::HandleScope handle_scope;
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v8::Local<v8::Object> obj = v8_value_->ToObject();
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rv = new CefV8ValueImpl(obj->Get(v8::Number::New(index)));
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}
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Unlock();
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return rv;
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}
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bool CefV8ValueImpl::SetValue(const std::wstring& key,
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CefRefPtr<CefV8Value> value)
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{
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if(IsReservedKey(key))
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return false;
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bool rv = false;
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Lock();
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if(v8_value_->IsObject()) {
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CefV8ValueImpl *impl = static_cast<CefV8ValueImpl*>(value.get());
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if(impl) {
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v8::HandleScope handle_scope;
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v8::Local<v8::Object> obj = v8_value_->ToObject();
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rv = obj->Set(GetV8String(key), impl->GetValue());
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}
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}
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Unlock();
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return rv;
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}
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bool CefV8ValueImpl::SetValue(int index, CefRefPtr<CefV8Value> value)
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{
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bool rv = false;
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Lock();
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if(v8_value_->IsObject()) {
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CefV8ValueImpl *impl = static_cast<CefV8ValueImpl*>(value.get());
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if(impl) {
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v8::HandleScope handle_scope;
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v8::Local<v8::Object> obj = v8_value_->ToObject();
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rv = obj->Set(v8::Number::New(index), impl->GetValue());
|
|
}
|
|
}
|
|
Unlock();
|
|
return rv;
|
|
}
|
|
|
|
bool CefV8ValueImpl::GetKeys(std::vector<std::wstring>& keys)
|
|
{
|
|
bool rv = false;
|
|
Lock();
|
|
if(v8_value_->IsObject()) {
|
|
v8::HandleScope handle_scope;
|
|
v8::Local<v8::Object> obj = v8_value_->ToObject();
|
|
v8::Local<v8::Array> arr_keys = obj->GetPropertyNames();
|
|
uint32_t len = arr_keys->Length();
|
|
for(uint32_t i = 0; i < len; ++i) {
|
|
v8::Local<v8::Value> value = arr_keys->Get(v8::Integer::New(i));
|
|
std::wstring str = GetWString(value->ToString());
|
|
if(!IsReservedKey(str))
|
|
keys.push_back(str);
|
|
}
|
|
rv = true;
|
|
}
|
|
Unlock();
|
|
return rv;
|
|
}
|
|
|
|
CefRefPtr<CefBase> CefV8ValueImpl::GetUserData()
|
|
{
|
|
CefRefPtr<CefBase> rv;
|
|
Lock();
|
|
if(v8_value_->IsObject()) {
|
|
v8::HandleScope handle_scope;
|
|
v8::Local<v8::Object> obj = v8_value_->ToObject();
|
|
v8::Local<v8::String> key = v8::String::New("Cef::UserData");
|
|
if(obj->Has(key))
|
|
rv = static_cast<CefBase*>(v8::External::Unwrap(obj->Get(key)));
|
|
}
|
|
Unlock();
|
|
return rv;
|
|
}
|
|
|
|
int CefV8ValueImpl::GetArrayLength()
|
|
{
|
|
int rv = 0;
|
|
Lock();
|
|
if(v8_value_->IsArray()) {
|
|
v8::HandleScope handle_scope;
|
|
v8::Local<v8::Object> obj = v8_value_->ToObject();
|
|
v8::Local<v8::Array> arr = v8::Local<v8::Array>::Cast(obj);
|
|
rv = arr->Length();
|
|
}
|
|
Unlock();
|
|
return rv;
|
|
}
|
|
|
|
std::wstring CefV8ValueImpl::GetFunctionName()
|
|
{
|
|
std::wstring rv;
|
|
Lock();
|
|
if(v8_value_->IsFunction()) {
|
|
v8::HandleScope handle_scope;
|
|
v8::Local<v8::Object> obj = v8_value_->ToObject();
|
|
v8::Local<v8::Function> func = v8::Local<v8::Function>::Cast(obj);
|
|
rv = GetWString(v8::Handle<v8::String>::Cast(func->GetName()));
|
|
}
|
|
Unlock();
|
|
return rv;
|
|
}
|
|
|
|
CefRefPtr<CefV8Handler> CefV8ValueImpl::GetFunctionHandler()
|
|
{
|
|
CefRefPtr<CefV8Handler> rv;
|
|
Lock();
|
|
if(v8_value_->IsFunction()) {
|
|
v8::HandleScope handle_scope;
|
|
v8::Local<v8::Object> obj = v8_value_->ToObject();
|
|
v8::Local<v8::String> key = v8::String::New("Cef::Handler");
|
|
if(obj->Has(key))
|
|
rv = static_cast<CefV8Handler*>(v8::External::Unwrap(obj->Get(key)));
|
|
}
|
|
Unlock();
|
|
return rv;
|
|
}
|
|
|
|
bool CefV8ValueImpl::ExecuteFunction(CefRefPtr<CefV8Value> object,
|
|
const CefV8ValueList& arguments,
|
|
CefRefPtr<CefV8Value>& retval,
|
|
std::wstring& exception)
|
|
{
|
|
bool rv = false;
|
|
Lock();
|
|
if(v8_value_->IsFunction() && object.get() && object->IsObject()) {
|
|
v8::HandleScope handle_scope;
|
|
v8::Local<v8::Object> obj = v8_value_->ToObject();
|
|
v8::Local<v8::Function> func = v8::Local<v8::Function>::Cast(obj);
|
|
|
|
CefV8ValueImpl* recv_impl = static_cast<CefV8ValueImpl*>(object.get());
|
|
v8::Handle<v8::Object> recv =
|
|
v8::Handle<v8::Object>::Cast(recv_impl->GetValue());
|
|
|
|
int argc = arguments.size();
|
|
v8::Handle<v8::Value> *argv = NULL;
|
|
if(argc > 0) {
|
|
argv = new v8::Handle<v8::Value>[argc];
|
|
for(int i = 0; i < argc; ++i) {
|
|
argv[i] =
|
|
static_cast<CefV8ValueImpl*>(arguments[i].get())->GetValue();
|
|
}
|
|
}
|
|
|
|
v8::TryCatch try_catch;
|
|
v8::Local<v8::Value> func_rv = func->Call(recv, argc, argv);
|
|
if (try_catch.HasCaught())
|
|
exception = GetWString(try_catch.Message()->Get());
|
|
else
|
|
retval = new CefV8ValueImpl(func_rv);
|
|
|
|
rv = true;
|
|
}
|
|
Unlock();
|
|
return rv;
|
|
}
|