CefRefPtr<CefListValue> FUnrealCEFSubProcessRemoteScripting::V8ArrayToCef(CefRefPtr<CefV8Value> Array)
{
CefRefPtr<CefListValue> Result = CefListValue::Create();
if (Array->IsArray())
{
for (int I = 0; I < Array->GetArrayLength(); ++I)
{
V8ToCef(Result, Array, I, Array->GetValue(I));
}
}
return Result;
}
// Transfer a V8 array to a List.
void SetList(CefRefPtr<CefV8Value> source, CefRefPtr<CefListValue> target) {
ASSERT(source->IsArray());
int arg_length = source->GetArrayLength();
if (arg_length == 0)
return;
// Start with null types in all spaces.
target->SetSize(arg_length);
for (int i = 0; i < arg_length; ++i)
SetListValue(target, i, source->GetValue(i));
}
bool FUnrealCEFSubProcessRemoteObject::ExecuteMethod(const CefString& MethodName, CefRefPtr<CefV8Value> Object, const CefV8ValueList& Arguments, CefRefPtr<CefV8Value>& Retval, CefString& InException)
{
CefRefPtr<CefV8Context> Context = CefV8Context::GetCurrentContext();
CefRefPtr<CefV8Exception> Exception;
CefRefPtr<CefV8Value> PromiseObjects;
// Run JS code that creates and unwraps a Promise object
if (!Context->Eval(
"(function() " \
"{ "
" var Accept, Reject, PromiseObject;" \
" PromiseObject = new Promise(function(InAccept, InReject) " \
" {"
" Accept = InAccept;" \
" Reject = InReject;" \
" });" \
" return [PromiseObject, Accept, Reject];" \
"})()" , PromiseObjects, Exception))
{
InException = Exception->GetMessage();
return false;
}
if (!(PromiseObjects.get() && PromiseObjects->IsArray() && PromiseObjects->GetArrayLength() == 3))
{
return false;
}
Retval = PromiseObjects->GetValue(0);
CefRefPtr<CefV8Value> Accept = PromiseObjects->GetValue(1);
CefRefPtr<CefV8Value> Reject = PromiseObjects->GetValue(2);
check(Retval->IsObject());
check(Accept->IsFunction());
check(Reject->IsFunction());
FGuid CallbackGuid = RemoteScripting->CallbackRegistry.FindOrAdd(Context, Retval, Accept, Reject, true);
CefRefPtr<CefProcessMessage> Message = CefProcessMessage::Create("UE::ExecuteUObjectMethod");
CefRefPtr<CefListValue> MessageArguments = Message->GetArgumentList();
MessageArguments->SetString(0, CefString(*ObjectId.ToString(EGuidFormats::Digits)));
MessageArguments->SetString(1, MethodName);
MessageArguments->SetString(2, CefString(*CallbackGuid.ToString(EGuidFormats::Digits)));
MessageArguments->SetList(3, RemoteScripting->V8ArrayToCef(Arguments));
Browser->SendProcessMessage(PID_BROWSER, Message);
return true;
}
// Simple function for formatted output of a V8 value.
void PrintValue(CefRefPtr<CefV8Value> value, std::stringstream &stream,
int indent)
{
std::stringstream indent_stream;
for(int i = 0; i < indent; ++i)
indent_stream << " ";
std::string indent_str = indent_stream.str();
if(value->IsUndefined())
stream << "(undefined)";
else if(value->IsNull())
stream << "(null)";
else if(value->IsBool())
stream << "(bool) " << (value->GetBoolValue() ? "true" : "false");
else if(value->IsInt())
stream << "(int) " << value->GetIntValue();
else if(value->IsDouble())
stream << "(double) " << value->GetDoubleValue();
else if(value->IsString())
stream << "(string) " << std::string(value->GetStringValue());
else if(value->IsFunction())
stream << "(function) " << std::string(value->GetFunctionName());
else if(value->IsArray()) {
stream << "(array) [";
int len = value->GetArrayLength();
for(int i = 0; i < len; ++i) {
stream << "\n " << indent_str.c_str() << i << " = ";
PrintValue(value->GetValue(i), stream, indent+1);
}
stream << "\n" << indent_str.c_str() << "]";
} else if(value->IsObject()) {
stream << "(object) [";
std::vector<CefString> keys;
if(value->GetKeys(keys)) {
for(size_t i = 0; i < keys.size(); ++i) {
stream << "\n " << indent_str.c_str() << keys[i].c_str() << " = ";
PrintValue(value->GetValue(keys[i]), stream, indent+1);
}
}
stream << "\n" << indent_str.c_str() << "]";
}
}
CefRefPtr<CefV8Value> IPC_Container::GetAttributesV8Value(
CefRefPtr<CefV8Context> context,
std::string array_variable,
int obj_index_in_array,
ContainerAttribute attr)
{
CefRefPtr<CefV8Value> containerObjArray = context->GetGlobal()->GetValue(array_variable);
if (obj_index_in_array < containerObjArray->GetArrayLength())
{
CefRefPtr<CefV8Value> containerObj = containerObjArray->GetValue(obj_index_in_array);
// Get objects attribute by attribute's name
return containerObj->GetValue(attr.GetName());
}
else
{
// DLOG(WARNING) << "WARNING: V8ArrayLength not as big as expected!";
// TODO: Handle NULL in following steps...
return CefV8Value::CreateNull();
}
}
void V8ValueAppendToCefListValue(CefRefPtr<CefV8Value> v8Value,
CefRefPtr<CefListValue> listValue,
int nestingLevel) {
if (!v8Value->IsValid()) {
DebugLog("V8ValueAppendToCefListValue(): IsValid() FAILED");
return;
}
if (nestingLevel > 8) {
DebugLog("V8ValueAppendToCefListValue(): WARNING: max nesting level (8) " \
"exceeded");
return;
}
if (v8Value->IsUndefined() || v8Value->IsNull()) {
listValue->SetNull((int)listValue->GetSize());
} else if (v8Value->IsBool()) {
listValue->SetBool((int)listValue->GetSize(), v8Value->GetBoolValue());
} else if (v8Value->IsInt()) {
listValue->SetInt((int)listValue->GetSize(), v8Value->GetIntValue());
} else if (v8Value->IsUInt()) {
uint32 uint32_value = v8Value->GetUIntValue();
CefRefPtr<CefBinaryValue> binaryValue = CefBinaryValue::Create(
&uint32_value, sizeof(uint32_value));
listValue->SetBinary((int)listValue->GetSize(), binaryValue);
} else if (v8Value->IsDouble()) {
listValue->SetDouble((int)listValue->GetSize(), v8Value->GetDoubleValue());
} else if (v8Value->IsDate()) {
// TODO: in time_utils.pyx there are already functions for
// converting cef_time_t to python DateTime, we could easily
// add a new function for converting the python DateTime to
// string and then to CefString and expose the function using
// the "public" keyword. But how do we get the cef_time_t
// structure from the CefTime class? GetDateValue() returns
// CefTime class.
listValue->SetNull((int)listValue->GetSize());
} else if (v8Value->IsString()) {
listValue->SetString((int)listValue->GetSize(), v8Value->GetStringValue());
} else if (v8Value->IsArray()) {
// Check for IsArray() must happen before the IsObject() check.
int length = v8Value->GetArrayLength();
CefRefPtr<CefListValue> newListValue = CefListValue::Create();
for (int i = 0; i < length; ++i) {
V8ValueAppendToCefListValue(v8Value->GetValue(i), newListValue,
nestingLevel + 1);
}
listValue->SetList((int)listValue->GetSize(), newListValue);
} else if (v8Value->IsFunction()) {
// Check for IsFunction() must happen before the IsObject() check.
if (CefV8Context::InContext()) {
CefRefPtr<CefV8Context> context = \
CefV8Context::GetCurrentContext();
CefRefPtr<CefFrame> frame = context->GetFrame();
std::string strCallbackId = PutJavascriptCallback(frame, v8Value);
/* strCallbackId = '####cefpython####' \
'{"what"=>"javascript-callback", ..}' */
listValue->SetString((int)listValue->GetSize(), strCallbackId);
} else {
listValue->SetNull((int)listValue->GetSize());
DebugLog("V8ValueAppendToCefListValue() FAILED: not in V8 context"
" , FATAL ERROR!");
}
} else if (v8Value->IsObject()) {
// Check for IsObject() must happen after the IsArray()
// and IsFunction() checks.
listValue->SetDictionary((int)listValue->GetSize(),
V8ObjectToCefDictionaryValue(v8Value, nestingLevel + 1));
} else {
listValue->SetNull((int)listValue->GetSize());
DebugLog("V8ValueAppendToCefListValue() FAILED: unknown V8 type");
}
}
virtual bool Execute(const CefString& InName,
CefRefPtr<CefV8Value> InObject,
const CefV8ValueList& InArguments,
CefRefPtr<CefV8Value>& OutRetval,
CefString& OutException)
{
bool Handled = false;
bool ValidAPI = true;
if (InName == "TriggerEvent")
{
// dispatch hook to the browser process for execution on the game thread
if ((InArguments.size() == 1) && InArguments[0]->IsArray())
{
CefRefPtr<CefV8Value> ArgumentArray = InArguments[0];
if (ArgumentArray->GetArrayLength() > 0)
{
CefRefPtr<CefBrowser> Browser = CefV8Context::GetCurrentContext()->GetBrowser();
ASSERT(Browser.get());
CefString HookName = ArgumentArray->GetValue(0)->GetStringValue();
if (!HookName.empty())
{
CefRefPtr<CefProcessMessage> Message = CefProcessMessage::Create(HookName);
// translate remaining args.
if ((ArgumentArray->GetArrayLength() > 1) && ArgumentArray->GetValue(1)->IsArray())
{
CefRefPtr<CefV8Value> InParameters = ArgumentArray->GetValue(1);
const int NumParameters = InParameters->GetArrayLength();
CefRefPtr<CefListValue> OutParameters = Message->GetArgumentList();
OutParameters->SetSize(NumParameters);
for (int i = 0; i < (int)NumParameters; ++i)
{
V8ValueToListItem_RenderThread(InParameters->GetValue(i), OutParameters, i);
}
}
Browser->SendProcessMessage(PID_BROWSER, Message);
Handled = true;
}
}
}
}
else if (InName == "SetHook")
{
if ((InArguments.size() == 2) && (InArguments[0]->IsString()) && (InArguments[1]->IsFunction()))
{
CefString HookName = InArguments[0]->GetStringValue().ToString();
CefRefPtr<CefV8Context> Context = CefV8Context::GetCurrentContext();
App->SetJSHook(HookName, Context->GetBrowser()->GetIdentifier(), Context, InArguments[1]);
Handled = true;
}
}
else if (InName == "RemoveHook")
{
if ((InArguments.size() == 1) && InArguments[0]->IsString())
{
CefRefPtr<CefV8Context> Context = CefV8Context::GetCurrentContext();
App->RemoveJSHook(InArguments[0]->GetStringValue(), Context->GetBrowser()->GetIdentifier());
Handled = true;
}
}
else
{
ValidAPI = false;
OutException = std::string("Unrecognized JSHook API Call: '") + InName.ToString() + std::string("'");
}
if (!Handled && ValidAPI)
{
OutException = std::string("Invalid Arguments Passed To '") + InName.ToString() + std::string("'");
}
return Handled;
}
