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cef/libcef/v8_impl.cc

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// Copyright (c) 2011 The Chromium Embedded Framework Authors. All rights
// reserved. Use of this source code is governed by a BSD-style license that
// can be found in the LICENSE file.
#include "browser_impl.h"
#include "v8_impl.h"
#include "cef_context.h"
#include "tracker.h"
#include "base/lazy_instance.h"
#include "third_party/WebKit/Source/WebKit/chromium/public/WebKit.h"
#include "third_party/WebKit/Source/WebKit/chromium/public/WebFrame.h"
#include "third_party/WebKit/Source/WebKit/chromium/public/WebScriptController.h"
#define CEF_REQUIRE_UI_THREAD(var) \
if (!CefThread::CurrentlyOn(CefThread::UI)) { \
NOTREACHED() << "called on invalid thread"; \
return var; \
}
#define CEF_REQUIRE_VALID_CONTEXT(var) \
if (!CONTEXT_STATE_VALID()) { \
NOTREACHED() << "context not valid"; \
return var; \
}
namespace {
static const char kCefAccessor[] = "Cef::Accessor";
static const char kCefHandler[] = "Cef::Handler";
static const char kCefUserData[] = "Cef::UserData";
// Memory manager.
base::LazyInstance<CefTrackManager> g_v8_tracker(base::LINKER_INITIALIZED);
class TrackBase : public CefTrackObject
{
public:
TrackBase(CefBase* base) { base_ = base; }
protected:
CefRefPtr<CefBase> base_;
};
class TrackBase2 : public TrackBase
{
public:
TrackBase2(CefBase* base, CefBase* base2): TrackBase(base) {
base2_ = base2;
}
protected:
CefRefPtr<CefBase> base2_;
};
class TrackString : public CefTrackObject
{
public:
TrackString(const std::string& str) : string_(str) {}
const char* GetString() { return string_.c_str(); }
private:
std::string string_;
};
void TrackAdd(CefTrackObject* object)
{
g_v8_tracker.Pointer()->Add(object);
}
void TrackDelete(CefTrackObject* object)
{
g_v8_tracker.Pointer()->Delete(object);
}
// Callback for weak persistent reference destruction.
void TrackDestructor(v8::Persistent<v8::Value> object, void* parameter)
{
if(parameter)
TrackDelete(static_cast<CefTrackObject*>(parameter));
object.Dispose();
object.Clear();
}
// Return the browser associated with the specified WebFrame.
CefRefPtr<CefBrowserImpl> FindBrowserForFrame(WebKit::WebFrame *frame)
{
CefContext::AutoLock lock_scope(_Context);
CefContext::BrowserList *list = _Context->GetBrowserList();
CefContext::BrowserList::const_iterator i;
i = list->begin();
for (; i != list->end(); ++i) {
WebKit::WebFrame* thisframe = i->get()->UIT_GetMainWebFrame();
if (thisframe == frame)
return i->get();
}
return NULL;
}
// Convert a CefString to a V8::String.
v8::Handle<v8::String> GetV8String(const CefString& str)
{
#if defined(CEF_STRING_TYPE_UTF16)
// Already a UTF16 string.
return v8::String::New(
reinterpret_cast<uint16_t*>(
const_cast<CefString::char_type*>(str.c_str())),
str.length());
#elif defined(CEF_STRING_TYPE_UTF8)
// Already a UTF8 string.
return v8::String::New(const_cast<char*>(str.c_str()), str.length());
#else
// Convert the string to UTF8.
std::string tmpStr = str;
return v8::String::New(tmpStr.c_str(), tmpStr.length());
#endif
}
#if defined(CEF_STRING_TYPE_UTF16)
void v8impl_string_dtor(char16* str)
{
delete [] str;
}
#elif defined(CEF_STRING_TYPE_UTF8)
void v8impl_string_dtor(char* str)
{
delete [] str;
}
#endif
// Convert a v8::String to CefString.
void GetCefString(v8::Handle<v8::String> str, CefString& out)
{
#if defined(CEF_STRING_TYPE_WIDE)
// Allocate enough space for a worst-case conversion.
int len = str->Utf8Length();
char* buf = new char[len + 1];
str->WriteUtf8(buf, len + 1);
// Perform conversion to the wide type.
cef_string_t* retws = out.GetWritableStruct();
cef_string_utf8_to_wide(buf, len, retws);
delete [] buf;
#else // !defined(CEF_STRING_TYPE_WIDE)
#if defined(CEF_STRING_TYPE_UTF16)
int len = str->Length();
char16* buf = new char16[len + 1];
str->Write(reinterpret_cast<uint16_t*>(buf), 0, len + 1);
#else
// Allocate enough space for a worst-case conversion.
int len = str->Utf8Length();
char* buf = new char[len + 1];
str->WriteUtf8(buf, len + 1);
#endif
// Don't perform an extra string copy.
out.clear();
cef_string_t* retws = out.GetWritableStruct();
retws->str = buf;
retws->length = len;
retws->dtor = v8impl_string_dtor;
#endif // !defined(CEF_STRING_TYPE_WIDE)
}
// V8 function callback.
v8::Handle<v8::Value> FunctionCallbackImpl(const v8::Arguments& args)
{
v8::HandleScope handle_scope;
CefV8Handler* handler =
static_cast<CefV8Handler*>(v8::External::Unwrap(args.Data()));
CefV8ValueList params;
for(int i = 0; i < args.Length(); i++)
params.push_back(new CefV8ValueImpl(args[i]));
CefString func_name;
GetCefString(v8::Handle<v8::String>::Cast(args.Callee()->GetName()),
func_name);
CefRefPtr<CefV8Value> object = new CefV8ValueImpl(args.This());
CefRefPtr<CefV8Value> retval;
CefString exception;
if(handler->Execute(func_name, object, params, retval, exception)) {
if (!exception.empty())
return v8::ThrowException(v8::Exception::Error(GetV8String(exception)));
else {
CefV8ValueImpl* rv = static_cast<CefV8ValueImpl*>(retval.get());
if (rv)
return rv->GetHandle();
}
}
return v8::Undefined();
}
// V8 Accessor callbacks
v8::Handle<v8::Value> AccessorGetterCallbackImpl(v8::Local<v8::String> property,
const v8::AccessorInfo& info)
{
v8::HandleScope handle_scope;
v8::Handle<v8::Object> obj = info.This();
CefV8Accessor* accessorPtr = CefV8ValueImpl::GetAccessor(obj);
if (accessorPtr) {
CefRefPtr<CefV8Value> retval;
CefRefPtr<CefV8Value> object = new CefV8ValueImpl(obj);
CefString name, exception;
GetCefString(property, name);
if (accessorPtr->Get(name, object, retval, exception)) {
if (!exception.empty()) {
return v8::ThrowException(
v8::Exception::Error(GetV8String(exception)));
} else {
CefV8ValueImpl* rv = static_cast<CefV8ValueImpl*>(retval.get());
if (rv)
return rv->GetHandle();
}
}
}
return v8::Undefined();
}
void AccessorSetterCallbackImpl(v8::Local<v8::String> property,
v8::Local<v8::Value> value,
const v8::AccessorInfo& info)
{
v8::HandleScope handle_scope;
v8::Handle<v8::Object> obj = info.This();
CefV8Accessor* accessorPtr = CefV8ValueImpl::GetAccessor(obj);
if (accessorPtr) {
CefRefPtr<CefV8Value> object = new CefV8ValueImpl(obj);
CefRefPtr<CefV8Value> cefValue = new CefV8ValueImpl(value);
CefString name, exception;
GetCefString(property, name);
accessorPtr->Set(name, object, cefValue, exception);
if (!exception.empty()) {
v8::ThrowException(v8::Exception::Error(GetV8String(exception)));
return;
}
}
}
// V8 extension registration.
class ExtensionWrapper : public v8::Extension {
public:
ExtensionWrapper(const char* extension_name,
const char* javascript_code,
CefV8Handler* handler)
: v8::Extension(extension_name, javascript_code), handler_(handler)
{
// The reference will be released when the application exits.
TrackAdd(new TrackBase(handler));
}
virtual v8::Handle<v8::FunctionTemplate> GetNativeFunction(
v8::Handle<v8::String> name)
{
return v8::FunctionTemplate::New(FunctionCallbackImpl,
v8::External::Wrap(handler_));
}
void UIT_RegisterExtension()
{
WebKit::WebScriptController::registerExtension(this);
}
void AddRef() {}
void Release() {}
static bool ImplementsThreadSafeReferenceCounting() { return true; }
private:
CefV8Handler* handler_;
};
} // namespace
bool CefRegisterExtension(const CefString& extension_name,
const CefString& javascript_code,
CefRefPtr<CefV8Handler> handler)
{
// Verify that the context is in a valid state.
CEF_REQUIRE_VALID_CONTEXT(false);
if(!handler.get()) {
NOTREACHED();
return false;
}
TrackString* name = new TrackString(extension_name);
TrackAdd(name);
TrackString* code = new TrackString(javascript_code);
TrackAdd(code);
ExtensionWrapper* wrapper = new ExtensionWrapper(name->GetString(),
code->GetString(), handler.get());
CefThread::PostTask(CefThread::UI, FROM_HERE, NewRunnableMethod(wrapper,
&ExtensionWrapper::UIT_RegisterExtension));
return true;
}
// CefV8Context
// static
CefRefPtr<CefV8Context> CefV8Context::GetCurrentContext()
{
CefRefPtr<CefV8Context> context;
CEF_REQUIRE_VALID_CONTEXT(context);
CEF_REQUIRE_UI_THREAD(context);
if (v8::Context::InContext())
context = new CefV8ContextImpl( v8::Context::GetCurrent() );
return context;
}
// static
CefRefPtr<CefV8Context> CefV8Context::GetEnteredContext()
{
CefRefPtr<CefV8Context> context;
CEF_REQUIRE_VALID_CONTEXT(context);
CEF_REQUIRE_UI_THREAD(context);
if (v8::Context::InContext())
context = new CefV8ContextImpl( v8::Context::GetEntered() );
return context;
}
// CefV8ContextImpl
CefV8ContextImpl::CefV8ContextImpl(v8::Handle<v8::Context> context)
#ifndef NDEBUG
: enter_count_(0)
#endif
{
v8_context_ = new CefV8ContextHandle(context);
}
CefV8ContextImpl::~CefV8ContextImpl()
{
DLOG_ASSERT(0 == enter_count_);
}
CefRefPtr<CefBrowser> CefV8ContextImpl::GetBrowser()
{
CefRefPtr<CefBrowser> browser;
CEF_REQUIRE_UI_THREAD(browser);
WebKit::WebFrame* webframe = GetWebFrame();
if (webframe)
browser = FindBrowserForFrame(webframe->top());
return browser;
}
CefRefPtr<CefFrame> CefV8ContextImpl::GetFrame()
{
CefRefPtr<CefFrame> frame;
CEF_REQUIRE_UI_THREAD(frame);
WebKit::WebFrame* webframe = GetWebFrame();
if (webframe) {
CefRefPtr<CefBrowserImpl> browser;
browser = FindBrowserForFrame(webframe->top());
if (browser.get())
frame = browser->UIT_GetCefFrame(webframe);
}
return frame;
}
CefRefPtr<CefV8Value> CefV8ContextImpl::GetGlobal()
{
CEF_REQUIRE_UI_THREAD(NULL);
v8::HandleScope handle_scope;
v8::Context::Scope context_scope(v8_context_->GetHandle());
return new CefV8ValueImpl(v8_context_->GetHandle()->Global());
}
bool CefV8ContextImpl::Enter()
{
CEF_REQUIRE_UI_THREAD(false);
v8_context_->GetHandle()->Enter();
#ifndef NDEBUG
++enter_count_;
#endif
return true;
}
bool CefV8ContextImpl::Exit()
{
CEF_REQUIRE_UI_THREAD(false);
DLOG_ASSERT(enter_count_ > 0);
v8_context_->GetHandle()->Exit();
#ifndef NDEBUG
--enter_count_;
#endif
return true;
}
v8::Local<v8::Context> CefV8ContextImpl::GetContext()
{
return v8::Local<v8::Context>::New(v8_context_->GetHandle());
}
WebKit::WebFrame* CefV8ContextImpl::GetWebFrame()
{
v8::HandleScope handle_scope;
v8::Context::Scope context_scope(v8_context_->GetHandle());
WebKit::WebFrame* frame = WebKit::WebFrame::frameForCurrentContext();
return frame;
}
// CefV8ValueHandle
// Custom destructor for a v8 value handle which gets called only on the UI
// thread.
CefV8ValueHandle::~CefV8ValueHandle()
{
if(tracker_) {
TrackAdd(tracker_);
v8_handle_.MakeWeak(tracker_, TrackDestructor);
} else {
v8_handle_.Dispose();
v8_handle_.Clear();
}
tracker_ = NULL;
}
// CefV8Value
// static
CefRefPtr<CefV8Value> CefV8Value::CreateUndefined()
{
CEF_REQUIRE_VALID_CONTEXT(NULL);
CEF_REQUIRE_UI_THREAD(NULL);
v8::HandleScope handle_scope;
return new CefV8ValueImpl(v8::Undefined());
}
// static
CefRefPtr<CefV8Value> CefV8Value::CreateNull()
{
CEF_REQUIRE_VALID_CONTEXT(NULL);
CEF_REQUIRE_UI_THREAD(NULL);
v8::HandleScope handle_scope;
return new CefV8ValueImpl(v8::Null());
}
// static
CefRefPtr<CefV8Value> CefV8Value::CreateBool(bool value)
{
CEF_REQUIRE_VALID_CONTEXT(NULL);
CEF_REQUIRE_UI_THREAD(NULL);
v8::HandleScope handle_scope;
return new CefV8ValueImpl(v8::Boolean::New(value));
}
// static
CefRefPtr<CefV8Value> CefV8Value::CreateInt(int value)
{
CEF_REQUIRE_VALID_CONTEXT(NULL);
CEF_REQUIRE_UI_THREAD(NULL);
v8::HandleScope handle_scope;
return new CefV8ValueImpl(v8::Int32::New(value));
}
// static
CefRefPtr<CefV8Value> CefV8Value::CreateDouble(double value)
{
CEF_REQUIRE_VALID_CONTEXT(NULL);
CEF_REQUIRE_UI_THREAD(NULL);
v8::HandleScope handle_scope;
return new CefV8ValueImpl(v8::Number::New(value));
}
// static
CefRefPtr<CefV8Value> CefV8Value::CreateDate(const CefTime& date)
{
CEF_REQUIRE_VALID_CONTEXT(NULL);
CEF_REQUIRE_UI_THREAD(NULL);
v8::HandleScope handle_scope;
// Convert from seconds to milliseconds.
return new CefV8ValueImpl(v8::Date::New(date.GetDoubleT() * 1000));
}
// static
CefRefPtr<CefV8Value> CefV8Value::CreateString(const CefString& value)
{
CEF_REQUIRE_VALID_CONTEXT(NULL);
CEF_REQUIRE_UI_THREAD(NULL);
v8::HandleScope handle_scope;
return new CefV8ValueImpl(GetV8String(value));
}
// static
CefRefPtr<CefV8Value> CefV8Value::CreateObject(CefRefPtr<CefBase> user_data)
{
CefRefPtr<CefV8Accessor> no_accessor;
return CreateObject(user_data, no_accessor);
}
// static
CefRefPtr<CefV8Value> CefV8Value::CreateObject(
CefRefPtr<CefBase> user_data, CefRefPtr<CefV8Accessor> accessor)
{
CEF_REQUIRE_VALID_CONTEXT(NULL);
CEF_REQUIRE_UI_THREAD(NULL);
v8::HandleScope handle_scope;
// Create the new V8 object.
v8::Local<v8::Object> obj = v8::Object::New();
// Provide a tracker object that will cause the user data and/or accessor
// reference to be released when the V8 object is destroyed.
TrackBase *tracker = NULL;
if (user_data.get() && accessor.get()) {
tracker = new TrackBase2(user_data, accessor);
} else if (user_data.get() || accessor.get()) {
tracker = new TrackBase(user_data.get() ?
user_data : CefRefPtr<CefBase>(accessor.get()));
}
// Attach the user data to the V8 object.
if (user_data.get()) {
v8::Local<v8::Value> data = v8::External::Wrap(user_data.get());
obj->SetHiddenValue(v8::String::New(kCefUserData), data);
}
// Attach the accessor to the V8 object.
if (accessor.get()) {
v8::Local<v8::Value> data = v8::External::Wrap(accessor.get());
obj->SetHiddenValue(v8::String::New(kCefAccessor), data);
}
return new CefV8ValueImpl(obj, tracker);
}
// static
CefRefPtr<CefV8Value> CefV8Value::CreateArray()
{
CEF_REQUIRE_VALID_CONTEXT(NULL);
CEF_REQUIRE_UI_THREAD(NULL);
v8::HandleScope handle_scope;
return new CefV8ValueImpl(v8::Array::New());
}
// static
CefRefPtr<CefV8Value> CefV8Value::CreateFunction(const CefString& name,
CefRefPtr<CefV8Handler> handler)
{
CEF_REQUIRE_VALID_CONTEXT(NULL);
CEF_REQUIRE_UI_THREAD(NULL);
if (!handler.get()) {
NOTREACHED() << "invalid parameter";
return NULL;
}
v8::HandleScope handle_scope;
// Create a new V8 function template with one internal field.
v8::Local<v8::FunctionTemplate> tmpl = v8::FunctionTemplate::New();
v8::Local<v8::Value> data = v8::External::Wrap(handler.get());
// Set the function handler callback.
tmpl->SetCallHandler(FunctionCallbackImpl, data);
// Retrieve the function object and set the name.
v8::Local<v8::Function> func = tmpl->GetFunction();
func->SetName(GetV8String(name));
// Attach the handler instance to the V8 object.
func->SetHiddenValue(v8::String::New(kCefHandler), data);
// Create the CefV8ValueImpl and provide a tracker object that will cause
// the handler reference to be released when the V8 object is destroyed.
return new CefV8ValueImpl(func, new TrackBase(handler));
}
// CefV8ValueImpl
CefV8ValueImpl::CefV8ValueImpl(v8::Handle<v8::Value> value,
CefTrackObject* tracker)
{
v8_value_ = new CefV8ValueHandle(value, tracker);
}
CefV8ValueImpl::~CefV8ValueImpl()
{
}
bool CefV8ValueImpl::IsUndefined()
{
CEF_REQUIRE_UI_THREAD(false);
return GetHandle()->IsUndefined();
}
bool CefV8ValueImpl::IsNull()
{
CEF_REQUIRE_UI_THREAD(false);
return GetHandle()->IsNull();
}
bool CefV8ValueImpl::IsBool()
{
CEF_REQUIRE_UI_THREAD(false);
return (GetHandle()->IsBoolean() || GetHandle()->IsTrue()
|| GetHandle()->IsFalse());
}
bool CefV8ValueImpl::IsInt()
{
CEF_REQUIRE_UI_THREAD(false);
return GetHandle()->IsInt32();
}
bool CefV8ValueImpl::IsDouble()
{
CEF_REQUIRE_UI_THREAD(false);
return GetHandle()->IsNumber();
}
bool CefV8ValueImpl::IsDate()
{
CEF_REQUIRE_UI_THREAD(false);
return GetHandle()->IsDate();
}
bool CefV8ValueImpl::IsString()
{
CEF_REQUIRE_UI_THREAD(false);
return GetHandle()->IsString();
}
bool CefV8ValueImpl::IsObject()
{
CEF_REQUIRE_UI_THREAD(false);
return GetHandle()->IsObject();
}
bool CefV8ValueImpl::IsArray()
{
CEF_REQUIRE_UI_THREAD(false);
return GetHandle()->IsArray();
}
bool CefV8ValueImpl::IsFunction()
{
CEF_REQUIRE_UI_THREAD(false);
return GetHandle()->IsFunction();
}
bool CefV8ValueImpl::IsSame(CefRefPtr<CefV8Value> that)
{
CEF_REQUIRE_UI_THREAD(false);
v8::HandleScope handle_scope;
v8::Handle<v8::Value> thatHandle;
v8::Handle<v8::Value> thisHandle = GetHandle();
CefV8ValueImpl *impl = static_cast<CefV8ValueImpl*>(that.get());
if (impl)
thatHandle = impl->GetHandle();
return (thisHandle == thatHandle);
}
bool CefV8ValueImpl::GetBoolValue()
{
CEF_REQUIRE_UI_THREAD(false);
if (GetHandle()->IsTrue()) {
return true;
} else if(GetHandle()->IsFalse()) {
return false;
} else {
v8::HandleScope handle_scope;
v8::Local<v8::Boolean> val = GetHandle()->ToBoolean();
return val->Value();
}
}
int CefV8ValueImpl::GetIntValue()
{
CEF_REQUIRE_UI_THREAD(0);
v8::HandleScope handle_scope;
v8::Local<v8::Int32> val = GetHandle()->ToInt32();
return val->Value();
}
double CefV8ValueImpl::GetDoubleValue()
{
CEF_REQUIRE_UI_THREAD(0.);
v8::HandleScope handle_scope;
v8::Local<v8::Number> val = GetHandle()->ToNumber();
return val->Value();
}
CefTime CefV8ValueImpl::GetDateValue()
{
CEF_REQUIRE_UI_THREAD(0.);
v8::HandleScope handle_scope;
v8::Local<v8::Number> val = GetHandle()->ToNumber();
// Convert from milliseconds to seconds.
return CefTime(val->Value() / 1000);
}
CefString CefV8ValueImpl::GetStringValue()
{
CefString rv;
CEF_REQUIRE_UI_THREAD(rv);
v8::HandleScope handle_scope;
GetCefString(GetHandle()->ToString(), rv);
return rv;
}
bool CefV8ValueImpl::HasValue(const CefString& key)
{
CEF_REQUIRE_UI_THREAD(false);
if(!GetHandle()->IsObject()) {
NOTREACHED();
return false;
}
v8::HandleScope handle_scope;
v8::Local<v8::Object> obj = GetHandle()->ToObject();
return obj->Has(GetV8String(key));
}
bool CefV8ValueImpl::HasValue(int index)
{
CEF_REQUIRE_UI_THREAD(false);
if(!GetHandle()->IsObject()) {
NOTREACHED();
return false;
}
v8::HandleScope handle_scope;
v8::Local<v8::Object> obj = GetHandle()->ToObject();
return obj->Has(index);
}
bool CefV8ValueImpl::DeleteValue(const CefString& key)
{
CEF_REQUIRE_UI_THREAD(false);
if(!GetHandle()->IsObject()) {
NOTREACHED();
return false;
}
v8::HandleScope handle_scope;
v8::Local<v8::Object> obj = GetHandle()->ToObject();
return obj->Delete(GetV8String(key));
}
bool CefV8ValueImpl::DeleteValue(int index)
{
CEF_REQUIRE_UI_THREAD(false);
if(!GetHandle()->IsObject()) {
NOTREACHED();
return false;
}
v8::HandleScope handle_scope;
v8::Local<v8::Object> obj = GetHandle()->ToObject();
return obj->Delete(index);
}
CefRefPtr<CefV8Value> CefV8ValueImpl::GetValue(const CefString& key)
{
CEF_REQUIRE_UI_THREAD(NULL);
if(!GetHandle()->IsObject()) {
NOTREACHED();
return NULL;
}
v8::HandleScope handle_scope;
v8::Local<v8::Object> obj = GetHandle()->ToObject();
return new CefV8ValueImpl(obj->Get(GetV8String(key)));
}
CefRefPtr<CefV8Value> CefV8ValueImpl::GetValue(int index)
{
CEF_REQUIRE_UI_THREAD(NULL);
if(!GetHandle()->IsObject()) {
NOTREACHED();
return NULL;
}
v8::HandleScope handle_scope;
v8::Local<v8::Object> obj = GetHandle()->ToObject();
return new CefV8ValueImpl(obj->Get(v8::Number::New(index)));
}
bool CefV8ValueImpl::SetValue(const CefString& key,
CefRefPtr<CefV8Value> value,
PropertyAttribute attribute)
{
CEF_REQUIRE_UI_THREAD(false);
if(!GetHandle()->IsObject()) {
NOTREACHED();
return false;
}
CefV8ValueImpl *impl = static_cast<CefV8ValueImpl*>(value.get());
if(impl) {
v8::HandleScope handle_scope;
v8::Local<v8::Object> obj = GetHandle()->ToObject();
return obj->Set(GetV8String(key), impl->GetHandle(),
static_cast<v8::PropertyAttribute>(attribute));
} else {
NOTREACHED();
return false;
}
}
bool CefV8ValueImpl::SetValue(int index, CefRefPtr<CefV8Value> value)
{
CEF_REQUIRE_UI_THREAD(false);
if (index < 0)
return false;
if(!GetHandle()->IsObject()) {
NOTREACHED();
return false;
}
CefV8ValueImpl *impl = static_cast<CefV8ValueImpl*>(value.get());
if(impl) {
v8::HandleScope handle_scope;
v8::Local<v8::Object> obj = GetHandle()->ToObject();
return obj->Set(index, impl->GetHandle());
} else {
NOTREACHED();
return false;
}
}
bool CefV8ValueImpl::SetValue(const CefString& key, AccessControl settings,
PropertyAttribute attribute)
{
CEF_REQUIRE_UI_THREAD(false);
if(!GetHandle()->IsObject()) {
NOTREACHED();
return false;
}
v8::HandleScope handle_scope;
v8::Local<v8::Object> obj = GetHandle()->ToObject();
// Verify that an accessor exists for this object.
if (!GetAccessor(obj))
return false;
v8::AccessorGetter getter = AccessorGetterCallbackImpl;
v8::AccessorSetter setter = (attribute & V8_PROPERTY_ATTRIBUTE_READONLY) ?
NULL : AccessorSetterCallbackImpl;
bool rv = obj->SetAccessor(GetV8String(key), getter, setter, obj,
static_cast<v8::AccessControl>(settings),
static_cast<v8::PropertyAttribute>(attribute));
return rv;
}
bool CefV8ValueImpl::GetKeys(std::vector<CefString>& keys)
{
CEF_REQUIRE_UI_THREAD(false);
if(!GetHandle()->IsObject()) {
NOTREACHED();
return false;
}
v8::HandleScope handle_scope;
v8::Local<v8::Object> obj = GetHandle()->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));
CefString str;
GetCefString(value->ToString(), str);
keys.push_back(str);
}
return true;
}
CefRefPtr<CefBase> CefV8ValueImpl::GetUserData()
{
CEF_REQUIRE_UI_THREAD(NULL);
if(!GetHandle()->IsObject()) {
NOTREACHED();
return NULL;
}
v8::HandleScope handle_scope;
v8::Local<v8::Object> obj = GetHandle()->ToObject();
v8::Local<v8::Value> value =
obj->GetHiddenValue(v8::String::New(kCefUserData));
if (!value.IsEmpty())
return static_cast<CefBase*>(v8::External::Unwrap(value));
return NULL;
}
int CefV8ValueImpl::GetArrayLength()
{
CEF_REQUIRE_UI_THREAD(0);
if(!GetHandle()->IsArray()) {
NOTREACHED();
return 0;
}
v8::HandleScope handle_scope;
v8::Local<v8::Object> obj = GetHandle()->ToObject();
v8::Local<v8::Array> arr = v8::Local<v8::Array>::Cast(obj);
return arr->Length();
}
CefString CefV8ValueImpl::GetFunctionName()
{
CefString rv;
CEF_REQUIRE_UI_THREAD(rv);
if(!GetHandle()->IsFunction()) {
NOTREACHED();
return rv;
}
v8::HandleScope handle_scope;
v8::Local<v8::Object> obj = GetHandle()->ToObject();
v8::Local<v8::Function> func = v8::Local<v8::Function>::Cast(obj);
GetCefString(v8::Handle<v8::String>::Cast(func->GetName()), rv);
return rv;
}
CefRefPtr<CefV8Handler> CefV8ValueImpl::GetFunctionHandler()
{
CEF_REQUIRE_UI_THREAD(NULL);
if(!GetHandle()->IsFunction()) {
NOTREACHED();
return NULL;
}
v8::HandleScope handle_scope;
v8::Local<v8::Object> obj = GetHandle()->ToObject();
v8::Local<v8::Value> value =
obj->GetHiddenValue(v8::String::New(kCefHandler));
if (!value.IsEmpty())
return static_cast<CefV8Handler*>(v8::External::Unwrap(value));
return NULL;
}
bool CefV8ValueImpl::ExecuteFunction(CefRefPtr<CefV8Value> object,
const CefV8ValueList& arguments,
CefRefPtr<CefV8Value>& retval,
CefString& exception)
{
// An empty context value defaults to the current context.
CefRefPtr<CefV8Context> context;
return ExecuteFunctionWithContext(context, object, arguments, retval,
exception);
}
bool CefV8ValueImpl::ExecuteFunctionWithContext(
CefRefPtr<CefV8Context> context,
CefRefPtr<CefV8Value> object,
const CefV8ValueList& arguments,
CefRefPtr<CefV8Value>& retval,
CefString& exception)
{
CEF_REQUIRE_UI_THREAD(false);
if(!GetHandle()->IsFunction()) {
NOTREACHED();
return false;
}
v8::HandleScope handle_scope;
v8::Local<v8::Context> context_local;
if (context.get()) {
CefV8ContextImpl* context_impl =
static_cast<CefV8ContextImpl*>(context.get());
context_local = context_impl->GetContext();
} else {
context_local = v8::Context::GetCurrent();
}
v8::Context::Scope context_scope(context_local);
v8::Local<v8::Object> obj = GetHandle()->ToObject();
v8::Local<v8::Function> func = v8::Local<v8::Function>::Cast(obj);
v8::Handle<v8::Object> recv;
// Default to the global object if no object or a non-object was provided.
if (object.get() && object->IsObject()) {
CefV8ValueImpl* recv_impl = static_cast<CefV8ValueImpl*>(object.get());
recv = v8::Handle<v8::Object>::Cast(recv_impl->GetHandle());
} else {
recv = context_local->Global();
}
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())->GetHandle();
}
v8::TryCatch try_catch;
v8::Local<v8::Value> func_rv = func->Call(recv, argc, argv);
if (try_catch.HasCaught()) {
v8::Local<v8::Message> msg = try_catch.Message();
if (msg.IsEmpty())
exception = "CEF received an empty exception message.";
else
GetCefString(msg->Get(), exception);
} else {
retval = new CefV8ValueImpl(func_rv);
}
return true;
}
// static
CefV8Accessor* CefV8ValueImpl::GetAccessor(v8::Handle<v8::Object> object)
{
v8::Local<v8::Value> value =
object->GetHiddenValue(v8::String::New(kCefAccessor));
if (!value.IsEmpty())
return static_cast<CefV8Accessor*>(v8::External::Unwrap(value));
return NULL;
}
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