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82 lines
2.8 KiB
C++
82 lines
2.8 KiB
C++
// Copyright 1998-2019 Epic Games, Inc. All Rights Reserved.
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#include "UnrealCEFSubProcessRemoteMethodHandler.h"
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#include "UnrealCEFSubProcess.h"
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#include "UnrealCEFSubProcessRemoteScripting.h"
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#if WITH_CEF3
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bool FUnrealCEFSubProcessRemoteMethodHandler::Execute(const CefString&, CefRefPtr<CefV8Value> Object, const CefV8ValueList& Arguments, CefRefPtr<CefV8Value>& Retval, CefString& InException)
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{
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return RemoteObject->ExecuteMethod(MethodName, Object, Arguments, Retval, InException);
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}
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bool FUnrealCEFSubProcessRemoteObject::ExecuteMethod(const CefString& MethodName, CefRefPtr<CefV8Value> Object, const CefV8ValueList& Arguments, CefRefPtr<CefV8Value>& Retval, CefString& InException)
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{
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CefRefPtr<CefV8Context> Context = CefV8Context::GetCurrentContext();
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CefRefPtr<CefV8Exception> Exception;
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CefRefPtr<CefV8Value> PromiseObjects;
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// Run JS code that creates and unwraps a Promise object
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const bool bEvalSuccess = Context->Eval(
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"(function() " \
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"{ "
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" var Accept, Reject, PromiseObject;" \
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" PromiseObject = new Promise(function(InAccept, InReject) " \
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" {"
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" Accept = InAccept;" \
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" Reject = InReject;" \
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" });" \
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" return [PromiseObject, Accept, Reject];" \
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"})()",
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#if !PLATFORM_LINUX
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CefString(),
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0,
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#endif
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PromiseObjects,
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Exception);
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if (!bEvalSuccess)
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{
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InException = Exception->GetMessage();
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return false;
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}
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if (!(PromiseObjects.get() && PromiseObjects->IsArray() && PromiseObjects->GetArrayLength() == 3))
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{
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return false;
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}
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Retval = PromiseObjects->GetValue(0);
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CefRefPtr<CefV8Value> Accept = PromiseObjects->GetValue(1);
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CefRefPtr<CefV8Value> Reject = PromiseObjects->GetValue(2);
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check(Retval->IsObject());
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check(Accept->IsFunction());
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check(Reject->IsFunction());
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FGuid CallbackGuid = RemoteScripting->CallbackRegistry.FindOrAdd(Context, Retval, Accept, Reject, true);
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CefRefPtr<CefProcessMessage> Message = CefProcessMessage::Create("UE::ExecuteUObjectMethod");
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CefRefPtr<CefListValue> MessageArguments = Message->GetArgumentList();
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MessageArguments->SetString(0, CefString(TCHAR_TO_WCHAR(*ObjectId.ToString(EGuidFormats::Digits))));
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MessageArguments->SetString(1, MethodName);
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MessageArguments->SetString(2, CefString(TCHAR_TO_WCHAR(*CallbackGuid.ToString(EGuidFormats::Digits))));
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MessageArguments->SetList(3, RemoteScripting->V8ArrayToCef(Arguments));
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Browser->SendProcessMessage(PID_BROWSER, Message);
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return true;
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}
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// Destructor will notify the client that the uobject is no longer being referenced on the JS side
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FUnrealCEFSubProcessRemoteObject::~FUnrealCEFSubProcessRemoteObject()
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{
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CefRefPtr<CefProcessMessage> Message = CefProcessMessage::Create("UE::ReleaseUObject");
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CefRefPtr<CefListValue> MessageArguments = Message->GetArgumentList();
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MessageArguments->SetString(0, CefString(TCHAR_TO_WCHAR(*ObjectId.ToString(EGuidFormats::Digits))));
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Browser->SendProcessMessage(PID_BROWSER, Message);
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}
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#endif
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