bool ClientApp::OnProcessMessageReceived(
CefRefPtr<CefBrowser> browser,
CefProcessId source_process,
CefRefPtr<CefProcessMessage> message) {
ASSERT(source_process == PID_BROWSER);
bool handled = false;
RenderDelegateSet::iterator it = render_delegates_.begin();
for (; it != render_delegates_.end() && !handled; ++it) {
handled = (*it)->OnProcessMessageReceived(this, browser, source_process,
message);
}
if (handled)
return true;
// Execute the registered JavaScript callback if any.
if (!callback_map_.empty()) {
CefString message_name = message->GetName();
CallbackMap::const_iterator it = callback_map_.find(
std::make_pair(message_name.ToString(),
browser->GetIdentifier()));
if (it != callback_map_.end()) {
// Keep a local reference to the objects. The callback may remove itself
// from the callback map.
CefRefPtr<CefV8Context> context = it->second.first;
CefRefPtr<CefV8Value> callback = it->second.second;
// Enter the context.
context->Enter();
CefV8ValueList arguments;
// First argument is the message name.
arguments.push_back(CefV8Value::CreateString(message_name));
// Second argument is the list of message arguments.
CefRefPtr<CefListValue> list = message->GetArgumentList();
CefRefPtr<CefV8Value> args =
CefV8Value::CreateArray(static_cast<int>(list->GetSize()));
SetList(list, args);
arguments.push_back(args);
// Execute the callback.
CefRefPtr<CefV8Value> retval = callback->ExecuteFunction(NULL, arguments);
if (retval.get()) {
if (retval->IsBool())
handled = retval->GetBoolValue();
}
// Exit the context.
context->Exit();
}
}
return handled;
}
// synchronously send a string from Node to browser, then return string result from browser to Node
Handle<Value> Window::SendSync(const Arguments& args) {
HandleScope scope;
NativeWindow *window = ObjectWrap::Unwrap<NativeWindow> (args.This());
if (window->GetBrowser()) {
// find browser's v8 context
CefRefPtr<CefV8Context> context = window->GetBrowser()->GetMainFrame()->GetV8Context();
// ensure it's usable and enter
if (context.get() && context->Enter()) {
// try to get "appjs.onmessage" function
CefRefPtr<CefV8Value> appjsObject = context->GetGlobal()->GetValue("appjs");
CefRefPtr<CefV8Value> callback = appjsObject->GetValue("onmessage");
if (callback.get()) {
// convert Node V8 string to Cef V8 string
CefV8ValueList argsOut;
argsOut.push_back(CefV8Value::CreateString(V8StringToChar(args[0]->ToString())));
// execute window.appjs fuction, passing in the string,
// then convert the return value from a CefValue to a Node V8 string
Handle<String> ret = CefStringToV8(callback->ExecuteFunction(appjsObject, argsOut)->GetStringValue());
// exit browser v8 context, return string result to Node caller
context->Exit();
return scope.Close(ret);
}
}
}
// likely error condition
return scope.Close(Undefined());
}
void FUnrealCEFSubProcessRemoteScripting::CefToV8Arglist(CefRefPtr<CefListValue> List, CefV8ValueList& Values)
{
for (size_t i = 0; i < List->GetSize(); ++i)
{
Values.push_back(CefToV8(List, i));
}
}
void CaffeineClientApp::NonBlockingSocketWrite(SOCKET s)
{
auto wb = wbMap.find(s); // s should exist
auto& data_list = wb->second;
// What if an error happens in the middle of draining the list
while(data_list.size())
{
auto data = data_list.front();
CaffeineSocketClient sc = scMap.find(s)->second;
// Write the data and call the callback
auto bytes_sent = sc.send(data.first.data(), data.first.size(), 0);
if(bytes_sent>=0 && static_cast<int>(data.first.size())>bytes_sent)
{
data.first.erase(bytes_sent);
}
else
{
// Call the callback
auto ctx = data.second.first;
ctx->Enter();
CefRefPtr<CefV8Value> CallbackArg1;
CefRefPtr<CefV8Value> CallbackArg2 = CefV8Value::CreateObject(NULL);
if(bytes_sent == SOCKET_ERROR)
{
int error_code = WSAGetLastError();
if (WSAEWOULDBLOCK != error_code && 0 != error_code)
{
CallbackArg1 = CefV8Value::CreateBool(true);
CallbackArg2->SetValue("status", CefV8Value::CreateString("error"), V8_PROPERTY_ATTRIBUTE_NONE);
CallbackArg2->SetValue("errorCode", CefV8Value::CreateInt(::WSAGetLastError()), V8_PROPERTY_ATTRIBUTE_NONE);
CallbackArg2->SetValue("handle", CefV8Value::CreateInt(s), V8_PROPERTY_ATTRIBUTE_NONE);
}
else
{
// The socket can't write anymore.
ctx->Exit();
break;
}
}
else
{
CallbackArg1 = CefV8Value::CreateNull();
CallbackArg2->SetValue("status", CefV8Value::CreateString("success"), V8_PROPERTY_ATTRIBUTE_NONE);
}
data_list.pop_front();
CefV8ValueList args;
args.push_back(CallbackArg1);
args.push_back(CallbackArg2);
data.second.second->ExecuteFunction(NULL, args);
ctx->Exit();
}
}
}
ChromiumDLL::JSObjHandle JavaScriptObject::executeFunction(ChromiumDLL::JavaScriptFunctionArgs *args)
{
if (!isFunction())
return GetJSFactory()->CreateException("Not a function!");
if (!args)
return GetJSFactory()->CreateException("Args are null for function call");
JavaScriptContext* context = (JavaScriptContext*)args->context;
JavaScriptObject* jso = (JavaScriptObject*)args->object.get();
CefV8ValueList argList;
for (int x=0; x<args->argc; x++)
{
JavaScriptObject* jsoa = (JavaScriptObject*)args->argv[x].get();
if (jsoa)
argList.push_back(jsoa->getCefV8());
else
argList.push_back(NULL);
}
CefRefPtr<CefV8Value> retval;
CefString exception;
bool res = m_pObject->ExecuteFunctionWithContext(context->getCefV8(), jso?jso->getCefV8():NULL, argList, retval, exception);
if (!res)
{
if (exception.c_str())
return GetJSFactory()->CreateException(exception.c_str());
return GetJSFactory()->CreateException("failed to run function");
}
if (!retval)
return NULL;
return new JavaScriptObject(retval);
}
void CallbackTask::Execute()
{
m_v8Ctx->Enter();
if (m_Func&&m_Func->IsFunction())
{
CefRefPtr<CefV8Value> jsonRet;
jsonRet=CefV8Value::CreateString(CefString(m_strJson));
CefV8ValueList retList;
retList.push_back(jsonRet);
m_Func->ExecuteFunction(m_Object,retList);
}
m_v8Ctx->Exit();
}
void CSJsSocket::OnRead(int fd, short ev)
{
char buffer[1024];
int len = Read(buffer, sizeof(buffer));
if (len == 0 || len == -1)
{
if (len == -1 && mErrorCallback)
{
CefV8ValueList args;
CefRefPtr<CefV8Value> retval;
CefRefPtr<CefV8Exception> exception;
mErrorCallback->ExecuteFunctionWithContext(mErrorContext, NULL, args, retval, exception, false);
}
Close();
event_del(&mEventRead);
return;
}
else
{
// we read something
if (mReadCallback)
{
CefV8ValueList args;
CefRefPtr<CefV8Value> retval;
CefRefPtr<CefV8Exception> exception;
std::string data(buffer, len);
args.push_back(CefV8Value::CreateString(data));
mReadCallback->ExecuteFunctionWithContext(mReadContext, NULL, args, retval, exception, false);
}
}
}
bool Application::OnProcessMessageReceived(
CefRefPtr<CefBrowser> InBrowser,
CefProcessId InSourceProcess,
CefRefPtr<CefProcessMessage> InMessage)
{
ASSERT(InSourceProcess == PID_BROWSER); // call should have come from browser process.
if (!Hooks.empty())
{
CefString MessageName = InMessage->GetName();
JSHookMap::iterator it = Hooks.find(std::make_pair(MessageName, InBrowser->GetIdentifier()));
if (it != Hooks.end())
{
// invoke JS callback
JSHook Hook(it->second);
Hook.Context->Enter();
CefRefPtr<CefListValue> MessageArguments = InMessage->GetArgumentList();
const int NumMessageArguments = (int)MessageArguments->GetSize();
// convert message arguments
CefV8ValueList Arguments;
for (int i = 0; i < NumMessageArguments; ++i)
{
Arguments.push_back(ListItemToV8Value_RenderThread(MessageArguments, i));
}
Hook.Function->ExecuteFunction(nullptr, Arguments);
Hook.Context->Exit();
return true;
}
}
return false;
}
bool ClientApp::OnProcessMessageReceived(
CefRefPtr<CefBrowser> browser,
CefProcessId source_process,
CefRefPtr<CefProcessMessage> message) {
ASSERT(source_process == PID_BROWSER);
bool handled = false;
// Execute delegate callbacks.
RenderDelegateSet::iterator it = render_delegates_.begin();
for (; it != render_delegates_.end() && !handled; ++it) {
handled = (*it)->OnProcessMessageReceived(this, browser, source_process, message);
}
if (!handled) {
if (message->GetName() == "invokeCallback") {
// This is called by the appshell extension handler to invoke the asynchronous
// callback function
CefRefPtr<CefListValue> messageArgs = message->GetArgumentList();
int32 callbackId = messageArgs->GetInt(0);
CefRefPtr<CefV8Context> context = callback_map_[callbackId].first;
CefRefPtr<CefV8Value> callbackFunction = callback_map_[callbackId].second;
CefV8ValueList arguments;
context->Enter();
// Sanity check to make sure the context is still attched to a browser.
// Async callbacks could be initiated after a browser instance has been deleted,
// which can lead to bad things. If the browser instance has been deleted, don't
// invoke this callback.
if (context->GetBrowser()) {
for (size_t i = 1; i < messageArgs->GetSize(); i++) {
arguments.push_back(ListValueToV8Value(messageArgs, i));
}
callbackFunction->ExecuteFunction(NULL, arguments);
}
context->Exit();
callback_map_.erase(callbackId);
} else if (message->GetName() == "executeCommand") {
// This is called by the browser process to execute a command via JavaScript
//
// The first argument is the command name. This is required.
// The second argument is a message id. This is optional. If set, a response
// message will be sent back to the browser process.
CefRefPtr<CefListValue> messageArgs = message->GetArgumentList();
CefString commandName = messageArgs->GetString(0);
int messageId = messageArgs->GetSize() > 1 ? messageArgs->GetInt(1) : -1;
bool handled = false;
StContextScope ctx(browser->GetMainFrame()->GetV8Context());
CefRefPtr<CefV8Value> global = ctx.GetContext()->GetGlobal();
if (global->HasValue("brackets")) {
CefRefPtr<CefV8Value> brackets = global->GetValue("brackets");
if (brackets->HasValue("shellAPI")) {
CefRefPtr<CefV8Value> shellAPI = brackets->GetValue("shellAPI");
if (shellAPI->HasValue("executeCommand")) {
CefRefPtr<CefV8Value> executeCommand = shellAPI->GetValue("executeCommand");
if (executeCommand->IsFunction()) {
CefRefPtr<CefV8Value> retval;
CefV8ValueList args;
args.push_back(CefV8Value::CreateString(commandName));
retval = executeCommand->ExecuteFunction(global, args);
if (retval) {
handled = retval->GetBoolValue();
}
}
}
}
}
// Return a message saying whether or not the command was handled
if (messageId != -1) {
CefRefPtr<CefProcessMessage> result = CefProcessMessage::Create("executeCommandCallback");
result->GetArgumentList()->SetInt(0, messageId);
result->GetArgumentList()->SetBool(1, handled);
browser->SendProcessMessage(PID_BROWSER, result);
}
}
}
return handled;
}
JNIEXPORT jboolean JNICALL Java_org_limewire_cef_CefV8Value_1N_N_1ExecuteFunction
(JNIEnv *env, jobject obj, jobject params)
{
CefRefPtr<CefV8Value> value(
(CefV8Value*)GetCefBaseFromJNIObject(env, obj));
if(!value.get())
return JNI_FALSE;
jclass params_cls = env->GetObjectClass(params);
// Retrieve the object member.
jobject object_obj = NULL;
{
jfieldID fieldID = env->GetFieldID(params_cls, "object",
"Lorg/limewire/cef/CefV8Value;");
if(fieldID != 0)
object_obj = env->GetObjectField(params, fieldID);
else
env->ExceptionClear();
}
if(!object_obj)
return JNI_FALSE;
CefRefPtr<CefV8Value> object(
(CefV8Value*)GetCefBaseFromJNIObject(env, object_obj));
if(!object.get())
return JNI_FALSE;
// Retrieve the argument member.
jobjectArray arg_arr = NULL;
{
jfieldID fieldID = env->GetFieldID(params_cls, "owner",
"[Lorg/limewire/cef/CefV8Value;");
if(fieldID != 0)
arg_arr = (jobjectArray)env->GetObjectField(params, fieldID);
else
env->ExceptionClear();
}
if(!arg_arr)
return JNI_FALSE;
CefV8ValueList argList;
int len = env->GetArrayLength(arg_arr);
for(int i = 0; i < len; i++)
{
jobject cobj = env->GetObjectArrayElement(arg_arr, i);
if(!cobj)
continue;
CefRefPtr<CefV8Value> argobj(
(CefV8Value*)GetCefBaseFromJNIObject(env, cobj));
if(!argobj.get())
continue;
argList.push_back(argobj);
}
CefString exception;
// Execute the function.
CefRefPtr<CefV8Value> retVal = value->ExecuteFunction(object, argList);
// Set the return value member.
{
jfieldID fieldID = env->GetFieldID(params_cls, "retval",
"Lorg/limewire/cef/CefV8Value;");
if(fieldID != 0)
{
jobject robj = NULL;
if(retVal.get())
{
robj = CreateJNIObject(env, "org/limewire/cef/CefV8Value_N",
retVal.get(), (long)retVal.get());
}
env->SetObjectField(params, fieldID, robj);
}
else
{
env->ExceptionClear();
}
}
// Set the exception member.
{
jfieldID fieldID = env->GetFieldID(params_cls, "exception",
"Ljava/lang/String;");
if(fieldID != 0)
{
env->SetObjectField(params, fieldID,
CreateJNIString(env, exception));
}
else
{
env->ExceptionClear();
}
}
return JNI_TRUE;
}
bool CaffeineClientApp::InvokeSocketMethod(SOCKET s, CefString state, int32 error_code)
{
bool retval = false;
auto i = sMap.find(s);
if(i!=sMap.end())
{
// First, try looking up the callback in the socket callback map.
auto cb = i->second.find(state);
if(cb!=i->second.end())
{
auto ctx = (cb->second).first;
ctx->Enter();
CefV8ValueList args;
CefRefPtr<CefV8Value> CallbackArg = CefV8Value::CreateObject(NULL);
CallbackArg->SetValue("handle", CefV8Value::CreateInt(s), V8_PROPERTY_ATTRIBUTE_NONE);
// If it's an error, it's handled a little differently.
if (state == "error")
{
CallbackArg->SetValue("errorCode", CefV8Value::CreateInt(error_code), V8_PROPERTY_ATTRIBUTE_NONE);
}
// The other cases have two arguments.
else if (state != "close") // "read" or "connect" cases
{
args.push_back(CefV8Value::CreateNull());
CallbackArg->SetValue("status", CefV8Value::CreateString("success"), V8_PROPERTY_ATTRIBUTE_NONE);
if (state == "read")
{
CaffeineSocketClient sc = scMap.find(s)->second;
vector<char> buffer(4096);
int bytes_recvd = sc.recv(&buffer.front(), buffer.size()-1, 0);
// TODO: Handle real errors on a read.
if(bytes_recvd<=0 /*&& (WSAEWOULDBLOCK == error_code || 0 == error_code)*/)
{
bytes_recvd = 0;
NonBlockingSocketWrite(s);
ctx->Exit();
return true;
}
buffer[bytes_recvd] = 0;
CallbackArg->SetValue("nBytes", CefV8Value::CreateInt(bytes_recvd), V8_PROPERTY_ATTRIBUTE_NONE);
CallbackArg->SetValue("data", CefV8Value::CreateString(buffer.data()), V8_PROPERTY_ATTRIBUTE_NONE);
}
}
args.push_back(CallbackArg);
(cb->second).second->ExecuteFunction(NULL, args);
ctx->Exit();
// TODO: We should actually call read to make sure we've read all of the data before
// TODO: cleaning up. Probably should do the same thing for the error case too.
if (state == "error" || state == "close")
{
closesocket(s);
// Clean up the sockets maps
RemoveSocketCallback(s);
wbMap.erase(s);
scMap.erase(s);
}
retval = true;
}
// Otherwise, if we can write handle it.
else if (state == "write")
{
NonBlockingSocketWrite(s);
retval = true;
}
}
return retval;
}
