v8::Handle<v8::Value> JSEventHandlerStruct::getAllData()
{
v8::HandleScope handle_scope;
bool isSusp = getIsSuspended();
bool isClear = getIsCleared();
v8::Local<v8::Object> returner =v8::Object::New();
returner->Set(v8::String::New("isCleared"),v8::Boolean::New(isClear));
returner->Set(v8::String::New("contextId"), v8::Integer::NewFromUnsigned(jscont->getContextID()));
if (isClear)
return handle_scope.Close(returner);
returner->Set(v8::String::New("sender"), sender);
returner->Set(v8::String::New("isSuspended"),v8::Boolean::New(isSusp));
v8::Handle<v8::Array> pattArray = v8::Array::New();
for (PatternListSize s =0; s < pattern.size(); ++s)
pattArray->Set(v8::Number::New(s), pattern[s].getAllData());
returner->Set(v8::String::New("patterns"), pattArray);
returner->Set(v8::String::New("callback"), cb);
return handle_scope.Close(returner);
}
void JSContextStruct::checkContextDisconnectCallback(JSPresenceStruct* jspres)
{
if (getIsSuspended() || getIsCleared())
return;
if (hasOnDisconnectedCallback)
jsObjScript->handlePresCallback(cbOnDisconnected,this,jspres);
}
v8::Handle<v8::Value> JSTimerStruct::clear()
{
if (getIsCleared())
{
JSLOG(insane,"In JSTimerStruct, calling clear on a timer that has already been cleared.");
return JSSuspendable::clear();
}
v8::HandleScope handle_scope;
JSSuspendable::clear();
mDeadlineTimer->cancel();
if (! cb.IsEmpty())
cb.Dispose();
if (! mPersistentHandle.IsEmpty())
{
//check to make sure object has adequate number of fields.
CHECK_INTERNAL_FIELD_COUNT(mPersistentHandle,jstimer,TIMER_JSTIMER_TEMPLATE_FIELD_COUNT, v8::Boolean::New(true));
//delete typeId, and return if have incorrect params for type id
DEL_TYPEID_AND_CHECK(mPersistentHandle,jstimer,TIMER_TYPEID_STRING,v8::Boolean::New(true));
mPersistentHandle->SetInternalField(TIMER_JSTIMERSTRUCT_FIELD, External::New(NULL));
}
// Be careful after this! JSContextStruct::struct_deregisterSuspendable will
// delete this object so you shouldn't use any member variables after
// invoking it.
if (jsContStruct != NULL)
{
//cannot clear if amExecuting.
if (amExecuting)
{
mCtx->objStrand->post(
std::tr1::bind(&JSContextStruct::struct_asyncDeregisterSuspendable,jsContStruct,this,
jsContStruct->livenessToken(),livenessToken()),
"JSContextStruct::struct_asyncDeregisterSuspendable"
);
}
else
jsContStruct->struct_deregisterSuspendable(this);
}
// Note that since this allows the JS GC thread to destroy this object
// in response to all references to it being lost,
// we need to make sure it is absolutely the *last* operation we do on
// member variables.
// In this case, the above call will have deleted this JSTimerStruct, so we
// don't even set it at all. It would have been unsafe to set it earlier
// because we could have ended up with two threads trying to do the deletion.
//noTimerWaiting = true;
return v8::Boolean::New(true);
}
//sender should be of type VISIBLE (see template defined in JSObjectScriptManager
bool JSEventHandlerStruct::matches(v8::Handle<v8::Object> obj, v8::Handle<v8::Object> incoming_sender, const SpaceObjectReference& receiver)
{
if (getIsSuspended() || getIsCleared())
return false; //cannot match a suspended handler
//decode the sender of the message
String errorMessage = "[JS] Error encountered in matches of JSEventHandler. Failed to decode sender of message as a visible object. ";
JSPositionListener* jsposlist = decodeJSPosListener(incoming_sender,errorMessage);
if (jsposlist == NULL)
{
JSLOG(error,errorMessage);
return false;
}
SpaceObjectReference* spref1 = jsposlist->getToListenTo();
//decode the expected sender
if (! sender->IsNull())
{
String errorMessageExpectedSender = "[JS] Error encountered in matches of JSEventHandler. Failed to decode expected sender of event handler. ";
JSPositionListener* jsplExpectedSender = decodeJSPosListener(sender, errorMessageExpectedSender);
if (jsplExpectedSender == NULL)
{
JSLOG(error,errorMessageExpectedSender);
return false;
}
SpaceObjectReference* spref2 = jsplExpectedSender->getToListenTo();
//check if the senders match
if ( (*spref1) != (*spref2)) //the senders do not match. do not fire
return false;
}
//check if the pattern matches the obj
for(PatternList::const_iterator pat_it = pattern.begin(); pat_it != pattern.end(); pat_it++)
{
if (! pat_it->matches(obj))
return false;
}
//check if the message is *to* one of my presences
if (jscont->canReceiveMessagesFor(receiver))
return true;
return false;
}
v8::Handle<v8::Value> JSEventHandlerStruct::resume()
{
if (getIsCleared())
{
JSLOG(info, "Error in resume of JSEventHandlerStruct.cpp. Called resume even though the handler had previously been cleared.");
return v8::ThrowException( v8::Exception::Error(v8::String::New("Error. Called resume on a handler that had already been cleared.")));
}
return JSSuspendable::resume();
}
void JSContextStruct::checkContextConnectCallback(JSPresenceStruct* jspres)
{
addToPresencesArray(jspres);
//check whether should evaluate any further callbacks.
if (getIsSuspended() || getIsCleared())
return;
if (hasOnConnectedCallback)
jsObjScript->handlePresCallback(cbOnConnected,this,jspres);
}
JSEventHandlerStruct::~JSEventHandlerStruct()
{
if (! getIsCleared())
{
if (jscont != NULL)
jscont->struct_deregisterSuspendable(this);
cb.Dispose();
sender.Dispose();
}
}
//called from jsobjectscript.
void JSPresenceStruct::disconnectCalledFromObjScript()
{
if (getIsCleared())
return;
if (! getIsConnected())
JSLOG(error, "Error when calling disconnect on presence. The presence wasn't already connected.");
isConnected = false;
if (mContext != NULL)
mContext->checkContextDisconnectCallback(this);
}
v8::Handle<v8::Value> JSContextStruct::suspend()
{
if (getIsCleared())
{
JSLOG(error,"Error when suspending. This context object was already cleared.");
return v8::ThrowException( v8::Exception::Error(v8::String::New("Error. Cannot suspend a context that has already been cleared.")) );
}
JSLOG(insane,"Suspending all suspendable objects associated with context");
for (SuspendableIter iter = associatedSuspendables.begin(); iter != associatedSuspendables.end(); ++iter)
iter->first->suspend();
return JSSuspendable::suspend();
}
v8::Handle<v8::Value> JSTimerStruct::struct_resetTimer(double timeInSecondsToRefire)
{
if (getIsCleared())
{
JSLOG(info,"Error in JSTimerStruct. Calling reset on a timer that has already been cleared.");
return JSSuspendable::clear();
}
mDeadlineTimer->cancel();
noTimerWaiting=false;
mDeadlineTimer->wait(Duration::seconds(timeInSecondsToRefire),std::tr1::bind(&JSTimerStruct::evaluateCallback,this));
return JSSuspendable::resume();
}
//has more of a reset-type functionality than resume
//if the time has not been cleared, then, cancel the current timer,
//and start a new countdown to execute the callback.
v8::Handle<v8::Value> JSTimerStruct::resume()
{
if (getIsCleared())
{
JSLOG(info,"Error in JSTimerStruct. Trying to resume a timer object that has already been cleared. Taking no action");
return JSSuspendable::getIsSuspendedV8();
}
mDeadlineTimer->cancel();
noTimerWaiting=false;
mDeadlineTimer->wait(timeUntil,std::tr1::bind(&JSTimerStruct::evaluateCallback,this));
return JSSuspendable::resume();
}
JSContextStruct::~JSContextStruct()
{
delete mSystem;
delete mHomeObject;
if (hasOnConnectedCallback)
cbOnConnected.Dispose();
if (hasOnDisconnectedCallback)
cbOnDisconnected.Dispose();
if (! getIsCleared())
mContext.Dispose();
}
//this function asks the jsObjScript to send a message from the presence associated
//with associatedPresence to the object with spaceobjectreference mHomeObject.
//The message contains the object toSend.
v8::Handle<v8::Value> JSContextStruct::struct_sendHome(const String& toSend)
{
NullPresenceCheck("Context: sendHome");
if (getIsCleared())
{
JSLOG(error,"Error when sending home. This context object was already cleared.");
return v8::ThrowException( v8::Exception::Error(v8::String::New("Error. Cannot call sendHome from a context that has already been cleared.")) );
}
jsObjScript->sendMessageToEntity(mHomeObject,associatedPresence->getSporef(),toSend);
return v8::Undefined();
}
void JSContextStruct::struct_registerSuspendable (JSSuspendable* toRegister)
{
if (getIsCleared())
{
JSLOG(error,"Error when registering suspendable. This context object was already cleared.");
return;
}
SuspendableIter iter = associatedSuspendables.find(toRegister);
if (iter != associatedSuspendables.end())
{
JSLOG(info,"Strangeness in registerSuspendable of JSContextStruct. Trying to re-register a suspendable with the context that was already registered. Unlikely to be an error, but thought I should mention it.");
return;
}
associatedSuspendables[toRegister] = 1;
}
v8::Handle<v8::Value> JSPresenceStruct::getAllData()
{
v8::HandleScope handle_scope;
v8::Handle<v8::Object> returner = JSPositionListener::struct_getAllData();
uint32 contID = mContext->getContextID();
returner->Set(v8::String::New("isConnected"), v8::Boolean::New(isConnected));
returner->Set(v8::String::New("contextId"), v8::Integer::NewFromUnsigned(contID));
bool isclear = getIsCleared();
returner->Set(v8::String::New("isCleared"), v8::Boolean::New(isclear));
bool issusp = getIsSuspended();
returner->Set(v8::String::New("isSuspended"), v8::Boolean::New(issusp));
if (!v8::Context::InContext())
return v8::ThrowException(v8::Exception::Error(v8::String::New("Error in get all data of presences truct. not currently in a v8 context.")));
v8::Handle<v8::Context>curContext = v8::Context::GetCurrent();
returner->Set(v8::String::New("suspendedOrientationVelocity"),CreateJSResult(curContext,mSuspendedOrientationVelocity));
returner->Set(v8::String::New("suspendedVelocity"),CreateJSResult(curContext,mSuspendedVelocity));
//onConnected
if (mOnConnectedCallback.IsEmpty())
returner->Set(v8::String::New("connectCallback"), v8::Null());
else
returner -> Set(v8::String::New("connectCallback"), mOnConnectedCallback);
//prox removed
if (mOnProxRemovedEventHandler.IsEmpty())
returner->Set(v8::String::New("onProxRemovedEventHandler"), v8::Null());
else
returner->Set(v8::String::New("onProxRemovedEventHandler"), mOnProxRemovedEventHandler);
//prox added func
if (mOnProxAddedEventHandler.IsEmpty())
returner->Set(v8::String::New("onProxAddedEventHandler"), v8::Null());
else
returner->Set(v8::String::New("onProxAddedEventHandler"), mOnProxAddedEventHandler);
return handle_scope.Close(returner);
}
//returning all data necessary to re-generate timer
// uint32 contextId
// double period
// double timeUntil timer expires
// bool isSuspended
// bool isCleared
// func cb
v8::Handle<v8::Value> JSTimerStruct::struct_getAllData()
{
v8::HandleScope handle_scope;
uint32 contId = jsContStruct->getContextID();
bool issusp = getIsSuspended();
bool isclear = getIsCleared();
double period = -1;
double tUntil = -1;
v8::Handle<v8::Function> cbFunc;
if (! isclear)
{
cbFunc = cb;
period = timeUntil.toSeconds();
if (issusp)
tUntil = timeUntil.toSeconds();
else
{
Duration pt = mDeadlineTimer->expiresFromNow();
tUntil = pt.seconds();
}
}
v8::Handle<v8::Object> returner = v8::Object::New();
if (isclear)
{
returner->Set(v8::String::New("isCleared"),v8::Boolean::New(isclear));
returner->Set(v8::String::New("contextId"), v8::Integer::NewFromUnsigned(contId));
return handle_scope.Close(returner);
}
returner->Set(v8::String::New("period"), v8::Number::New(period));
returner->Set(v8::String::New("callback"),cbFunc);
returner->Set(v8::String::New("timeRemaining"),v8::Number::New(tUntil));
returner->Set(v8::String::New("isSuspended"),v8::Boolean::New(issusp));
return handle_scope.Close(returner);
}
void JSEventHandlerStruct::printHandler()
{
if (getIsCleared())
{
std::cout<<"**Cleared. No information.";
return;
}
//print patterns
for (PatternList::const_iterator pat_it = pattern.begin(); pat_it != pattern.end(); pat_it++)
{
if (getIsSuspended())
std::cout<<"**Suspended ";
else
std::cout<<"**Active ";
pat_it->printPattern();
}
/*
FIXME: sender should really be a part of the pattern.
*/
//print sender
if (this->sender->IsNull())
std::cout<<"Sender: any";
else
{
//unwrap the sender to match
v8::Local<v8::External>wrap;
void* ptr;
wrap= v8::Local<v8::External>::Cast(this->sender->GetInternalField(0));
ptr = wrap->Value();
ObjectReference* objRef = static_cast<ObjectReference*>(ptr);
std::cout<<"Sender: "<<(objRef->getAsUUID()).toString();
}
std::cout<<"\n\n";
}
//first argument of args is a function (funcToCall), which we skip
v8::Handle<v8::Value> JSContextStruct::struct_executeScript(v8::Handle<v8::Function> funcToCall,const v8::Arguments& args)
{
if (getIsCleared())
{
JSLOG(error,"Error when executing. This context object was already cleared.");
return v8::ThrowException( v8::Exception::Error(v8::String::New("Error. Cannot call execute on a context that has already been cleared.")) );
}
//copying arguments over to arg array for execution.
int argc = args.Length() -1;
Handle<Value>* argv = new Handle<Value>[argc];
for (int s=1; s < args.Length(); ++s)
argv[s-1] = args[s];
v8::Handle<v8::Value> returner = jsObjScript->executeInContext(mContext,funcToCall, argc,argv);
delete argv; //free additional memory.
return returner;
}
void JSContextStruct::struct_deregisterSuspendable (JSSuspendable* toDeregister)
{
//don't want to de-register suspendables while I'm calling clear.
//clear is already running through each and removing them from suspendables.
if (inClear)
return;
if (getIsCleared())
{
JSLOG(error,"Error when deregistering suspendable. This context object was already cleared.");
return;
}
SuspendableIter iter = associatedSuspendables.find(toDeregister);
if (iter == associatedSuspendables.end())
{
JSLOG(error,"Error when deregistering suspendable in JSContextStruct.cpp. Trying to deregister a suspendable that the context struct had not already registered. Likely an error.");
return;
}
associatedSuspendables.erase(iter);
}
v8::Handle<v8::Value> JSTimerStruct::suspend()
{
if (getIsCleared())
{
JSLOG(info, "Error in suspend of JSTimerStruct.cpp. Called suspend even though the timer had previously been cleared.");
return v8::ThrowException( v8::Exception::Error(v8::String::New("Error. Called suspend on a timer that had already been cleared.")));
}
JSLOG(insane,"suspending timer");
//note, it is important that call to JSSuspendable::supsend occurs before
//actually cancelling the deadline timer so that we're performing correct
//checks for timer cleanup.
v8::HandleScope handle_scope;
v8::Handle<v8::Value>returner = JSSuspendable::suspend();
mDeadlineTimer->cancel();
// Note that since this allows the JS GC thread to destroy this object
// in response to all references to it being lost,
// we need to make sure it is absolutely the *last* operation we do on
// member variables.
noTimerWaiting = true;
return handle_scope.Close(returner);
}
