Base class for objects that declare events, event handlers and registered methods. More...

#include <piobject.h>

Inheritance diagram for PIObject:

[legend]

Classes
class	Connection
	Handle of one connection between a source object and a destination object or functor. More...

Public Member Functions
	PIObject (const PIString &name=PIString())
	Constructs an object and initializes its `name` property.

virtual	~PIObject ()
	Destroys the object, raises deleted() and disconnects it from the event graph.

PIString	name () const
	Returns the `name` property of this object.

virtual const char *	className () const
	Returns the registered class name of this object.

virtual uint	classNameID () const
	Returns the hash of className().

virtual const char *	parentClassName () const
	Returns the registered parent class name, or an empty string for the root.

bool	debug () const
	Returns whether piCoutObj output is enabled for this object.

void	setName (const PIString &name)
	Sets the `name` property of this object.

void	setDebug (bool debug)
	Enables or disables piCoutObj output for this object.

PIVariant	property (const char *name) const
	Returns the property with name "name".

void	setProperty (const char *name, const PIVariant &value)
	Sets the property "name" to "value" and creates it if needed. More...

bool	isPropertyExists (const char *name) const
	Returns whether the property "name" exists.

void	setThreadSafe (bool yes)
	Enables or disables the internal object mutex during handler execution. More...

bool	isThreadSafe () const
	Returns whether the internal object mutex is enabled for handler execution.

bool	execute (const PIString &method, const PIVector< PIVariantSimple > &vl)
	Executes a registered method or handler method by name with the supplied arguments. More...

bool	execute (const PIString &method)
	Overload of execute() for a method without arguments.

bool	execute (const PIString &method, const PIVariantSimple &v0)
	Overload of execute() for one argument.

bool	execute (const PIString &method, const PIVariantSimple &v0, const PIVariantSimple &v1)
	Overload of execute() for two arguments.

bool	execute (const PIString &method, const PIVariantSimple &v0, const PIVariantSimple &v1, const PIVariantSimple &v2)
	Overload of execute() for three arguments.

bool	execute (const PIString &method, const PIVariantSimple &v0, const PIVariantSimple &v1, const PIVariantSimple &v2, const PIVariantSimple &v3)
	Overload of execute() for four arguments.

bool	executeQueued (PIObject *performer, const PIString &method, const PIVector< PIVariantSimple > &vl)
	Queues execution of a registered method on the performer object. More...

bool	executeQueued (PIObject *performer, const PIString &method)
	Overload of executeQueued() for a method without arguments.

bool	executeQueued (PIObject *performer, const PIString &method, const PIVariantSimple &v0)
	Overload of executeQueued() for one argument.

bool	executeQueued (PIObject *performer, const PIString &method, const PIVariantSimple &v0, const PIVariantSimple &v1)
	Overload of executeQueued() for two arguments.

bool	executeQueued (PIObject *performer, const PIString &method, const PIVariantSimple &v0, const PIVariantSimple &v1, const PIVariantSimple &v2)
	Overload of executeQueued() for three arguments.

bool	executeQueued (PIObject *performer, const PIString &method, const PIVariantSimple &v0, const PIVariantSimple &v1, const PIVariantSimple &v2, const PIVariantSimple &v3)
	Overload of executeQueued() for four arguments.

void	dump (const PIString &line_prefix=PIString()) const
	Dumps object diagnostics to the project output stream.

PIStringList	scopeList () const
	Returns the registered inheritance scope of this object, including its own class.

PIStringList	methodsEH () const
	Returns full signatures of all registered event and handler methods for this class scope.

bool	isMethodEHContains (const PIString &name) const
	Returns whether a registered event or handler method with this name exists.

PIString	methodEHArguments (const PIString &name) const
	Returns the comma-separated argument type list of a registered method.

PIString	methodEHFullFormat (const PIString &name) const
	Returns the full registered signature of a method.

PIString	methodEHFromAddr (const void *addr) const
	Returns the registered method name for the specified entry-point address.

void	piDisconnect (const PIString &sig, PIObject dest, void ev_h)
	Disconnects this source object from a specific destination handler for event "sig".

void	piDisconnect (const PIString &sig, PIObject *dest)
	Disconnects this source object from all connections of event "sig" to destination object "dest".

void	piDisconnect (const PIString &sig)
	Disconnects this source object from all connections of event "sig".

bool	isPIObject () const
	Returns whether this pointer still refers to a live PIObject instance.

template<typename T >
bool	isTypeOf () const
	Returns whether this object belongs to class "T" or one of its registered descendants.

template<typename T >
T *	cast () const
	Returns this object cast to "T" when isTypeOf<T>() succeeds, otherwise `nullptr`.

void	callQueuedEvents ()
	Executes all queued deliveries posted to this performer object.

bool	maybeCallQueuedEvents ()
	Executes queued deliveries only when this object was used as a performer. More...

void	deleteLater ()
	Schedules the object for deferred deletion. More...

Static Public Member Functions
static bool	execute (PIObject *o, const PIString &method, const PIVector< PIVariantSimple > &vl)
	Static convenience wrapper for execute().

static bool	execute (PIObject *o, const PIString &method)
	Static overload of execute() without arguments.

static bool	execute (PIObject *o, const PIString &method, const PIVariantSimple &v0)
	Static overload of execute() for one argument.

static bool	execute (PIObject *o, const PIString &method, const PIVariantSimple &v0, const PIVariantSimple &v1)
	Static overload of execute() for two arguments.

static bool	execute (PIObject *o, const PIString &method, const PIVariantSimple &v0, const PIVariantSimple &v1, const PIVariantSimple &v2)
	Static overload of execute() for three arguments.

static bool	execute (PIObject *o, const PIString &method, const PIVariantSimple &v0, const PIVariantSimple &v1, const PIVariantSimple &v2, const PIVariantSimple &v3)
	Static overload of execute() for four arguments.

static bool	executeQueued (PIObject o, PIObject performer, const PIString &method, const PIVector< PIVariantSimple > &vl)
	Static convenience wrapper for executeQueued().

static bool	executeQueued (PIObject o, PIObject performer, const PIString &method)
	Static overload of executeQueued() without arguments.

static bool	executeQueued (PIObject o, PIObject performer, const PIString &method, const PIVariantSimple &v0)
	Static overload of executeQueued() for one argument.

static bool	executeQueued (PIObject o, PIObject performer, const PIString &method, const PIVariantSimple &v0, const PIVariantSimple &v1)
	Static overload of executeQueued() for two arguments.

static bool	executeQueued (PIObject o, PIObject performer, const PIString &method, const PIVariantSimple &v0, const PIVariantSimple &v1, const PIVariantSimple &v2)
	Static overload of executeQueued() for three arguments.

static bool	executeQueued (PIObject o, PIObject performer, const PIString &method, const PIVariantSimple &v0, const PIVariantSimple &v1, const PIVariantSimple &v2, const PIVariantSimple &v3)
	Static overload of executeQueued() for four arguments.

static PIObject::Connection	piConnect (PIObject src, const PIString &sig, PIObject dest_o, void dest, void ev_h, void e_h, int args, const char loc)
	Low-level direct connection helper behind the legacy `CONNECT*` macros.

static PIObject::Connection	piConnectU (PIObject src, const PIString &sig, PIObject dest_o, void dest, const PIString &hname, const char loc, PIObject *performer=0)
	Low-level name-based connection helper behind CONNECTU() and CONNECTU_QUEUED().

static PIObject::Connection	piConnectLS (PIObject src, const PIString &sig, std::function< void()> f, const char *loc)
	Low-level helper that connects an event to a lambda or functor wrapper.

static void	piDisconnect (PIObject src, const PIString &sig, PIObject dest, void *ev_h)
	Disconnects source object "src" from a specific destination handler for event "sig".

static void	piDisconnect (PIObject src, const PIString &sig, PIObject dest)
	Disconnects source object "src" from all connections of event "sig" to destination object "dest".

static void	piDisconnect (PIObject *src, const PIString &sig)
	Disconnects source object "src" from all connections of event "sig".

static void	raiseEvent (PIObject *sender, const uint eventID)
	Internal event delivery helper for registered events without arguments.

template<typename T0 >
static void	raiseEvent (PIObject *sender, const uint eventID, const T0 &v0=T0())
	Internal event delivery helper for registered events with one argument.

template<typename T0 , typename T1 >
static void	raiseEvent (PIObject *sender, const uint eventID, const T0 &v0=T0(), const T1 &v1=T1())
	Internal event delivery helper for registered events with two arguments.

template<typename T0 , typename T1 , typename T2 >
static void	raiseEvent (PIObject *sender, const uint eventID, const T0 &v0=T0(), const T1 &v1=T1(), const T2 &v2=T2())
	Internal event delivery helper for registered events with three arguments.

template<typename T0 , typename T1 , typename T2 , typename T3 >
static void	raiseEvent (PIObject *sender, const uint eventID, const T0 &v0=T0(), const T1 &v1=T1(), const T2 &v2=T2(), const T3 &v3=T3())
	Internal event delivery helper for registered events with four arguments.

static PIObject *	findByName (const PIString &name)
	Returns the first live object with name "name", or `nullptr`.

static bool	isPIObject (const PIObject *o)
	Returns whether "o" points to a live PIObject instance.

static bool	isPIObject (const void *o)
	Overload of isPIObject() for an untyped pointer.

template<typename T >
static bool	isTypeOf (const PIObject *o)
	Returns whether "o" belongs to class "T" or one of its registered descendants.

template<typename T >
static bool	isTypeOf (const void *o)
	Overload of isTypeOf() for an untyped pointer.

static PIString	simplifyType (const char *a, bool readable=true)
	Simplifies a C++ type spelling for registered-method metadata.

Protected Member Functions
PIObject *	emitter () const
	Returns the source object that raised the current event. More...

virtual void	propertyChanged (const char *name)
	Virtual method called after property "name" has been changed by setProperty().

Related Functions
(Note that these are not member functions.)
#define	piCoutObj
	Macro used for conditional (piDebug && PIObject::debug()) output to PICout(StdOut) for subclasses of PIObject.

#define	piCerrObj
	Macro used for conditional (piDebug && PIObject::debug()) output to PICout(StdErr) for subclasses of PIObject.

#define	PIOBJECT(name)
	Put this macro inside a direct PIObject subclass definition to enable registered events, event handlers and class metadata.

#define	PIOBJECT_SUBCLASS(name, parent)
	Put this macro inside a PIObject subclass definition to inherit registered methods and class scope from "parent".

#define	EVENT_HANDLER0(ret, name) ret name()
	Declare a registered event handler method with signature `ret name()`.

#define	EVENT_HANDLER1(ret, name, type0, var0) ret name(type0 var0)
	Declare a registered event handler method with one argument.

#define	EVENT_HANDLER2(ret, name, type0, var0, type1, var1) ret name(type0 var0, type1 var1)
	Declare a registered event handler method with two arguments.

#define	EVENT_HANDLER3(ret, name, type0, var0, type1, var1, type2, var2) ret name(type0 var0, type1 var1, type2 var2)
	Declare a registered event handler method with three arguments.

#define	EVENT_HANDLER4(ret, name, type0, var0, type1, var1, type2, var2, type3, var3) ret name(type0 var0, type1 var1, type2 var2, type3 var3)
	Declare a registered event handler method with four arguments.

#define	EVENT_HANDLER EVENT_HANDLER0
	Synonym of EVENT_HANDLER0.

#define	EVENT_VHANDLER0(ret, name) virtual ret name()
	Declare a virtual registered event handler method with signature `virtual ret name()`.

#define	EVENT_VHANDLER1(ret, name, type0, var0) virtual ret name(type0 var0)
	Declare a virtual registered event handler method with one argument.

#define	EVENT_VHANDLER2(ret, name, type0, var0, type1, var1) virtual ret name(type0 var0, type1 var1)
	Declare a virtual registered event handler method with two arguments.

#define	EVENT_VHANDLER3(ret, name, type0, var0, type1, var1, type2, var2) virtual ret name(type0 var0, type1 var1, type2 var2)
	Declare a virtual registered event handler method with three arguments.

#define	EVENT_VHANDLER4(ret, name, type0, var0, type1, var1, type2, var2, type3, var3) virtual ret name(type0 var0, type1 var1, type2 var2, type3 var3)
	Declare a virtual registered event handler method with four arguments.

#define	EVENT_VHANDLER EVENT_VHANDLER0
	Synonym of EVENT_VHANDLER0.

#define	EVENT0(name) void name();
	Declare an event method with no arguments.

#define	EVENT1(name, type0, var0) void name(type0 var0);
	Declare an event method with one argument.

#define	EVENT2(name, type0, var0, type1, var1) void name(type0 var0, type1 var1);
	Declare an event method with two arguments.

#define	EVENT3(name, type0, var0, type1, var1, type2, var2) void name(type0 var0, type1 var1, type2 var2);
	Declare an event method with three arguments.

#define	EVENT4(name, type0, var0, type1, var1, type2, var2, type3, var3) void name(type0 var0, type1 var1, type2 var2, type3 var3);
	Declare an event method with four arguments.

#define	EVENT EVENT0
	Synonym of EVENT0.

#define	RAISE_EVENT0(src, event)
	Compatibility helper that raises event "event" on source object "src".

#define	RAISE_EVENT1(src, event, v0)
	Compatibility helper that raises event "event" with one argument.

#define	RAISE_EVENT2(src, event, v0, v1)
	Compatibility helper that raises event "event" with two arguments.

#define	RAISE_EVENT3(src, event, v0, v1, v2)
	Compatibility helper that raises event "event" with three arguments.

#define	RAISE_EVENT4(src, event, v0, v1, v2, v3)
	Compatibility helper that raises event "event" with four arguments.

#define	CONNECTU(src, event, dest, handler)
	Connect event "event" from object "src" to event handler or event "handler" of object "dest". More...

#define	CONNECTU_QUEUED(src, event, dest, handler, performer)
	Connect event "event" from object "src" to event handler or event "handler" of object "dest". More...

#define	CONNECTL(src, event, functor)
	Connect event "event" from object "src" to lambda-expression "functor". More...

#define	CONNECT0(ret, src, event, dest, handler)
	Legacy compatibility helper that connects an event to a registered handler with compile-time signature spelling. More...

#define	CONNECT1(ret, type0, src, event, dest, handler)
	Legacy compatibility helper for a one-argument registered event or handler. More...

#define	CONNECT2(ret, type0, type1, src, event, dest, handler)
	Legacy compatibility helper for a two-argument registered event or handler. More...

#define	CONNECT3(ret, type0, type1, type2, src, event, dest, handler)
	Legacy compatibility helper for a three-argument registered event or handler. More...

#define	CONNECT4(ret, type0, type1, type2, type3, src, event, dest, handler)
	Legacy compatibility helper for a four-argument registered event or handler. More...

#define	CONNECT CONNECT0
	Synonym of CONNECT0. More...

#define	WEAK_CONNECT0(ret, src, event, dest, handler)
	Legacy compatibility helper that skips source method verification. More...

#define	WEAK_CONNECT1(ret, type0, src, event, dest, handler)
	Legacy compatibility helper that skips source method verification for one argument. More...

#define	WEAK_CONNECT2(ret, type0, type1, src, event, dest, handler)
	Legacy compatibility helper that skips source method verification for two arguments. More...

#define	WEAK_CONNECT3(ret, type0, type1, type2, src, event, dest, handler)
	Legacy compatibility helper that skips source method verification for three arguments. More...

#define	WEAK_CONNECT4(ret, type0, type1, type2, type3, src, event, dest, handler)
	Legacy compatibility helper that skips source method verification for four arguments. More...

#define	WEAK_CONNECT WEAK_CONNECT0
	Synonym of WEAK_CONNECT0. More...

#define	DISCONNECT0(ret, src, event, dest, handler)
	Disconnect a registered event from a registered event handler.

#define	DISCONNECT1(ret, type0, src, event, dest, handler)
	Disconnect a one-argument registered event from a registered event handler.

#define	DISCONNECT2(ret, type0, type1, src, event, dest, handler)
	Disconnect a two-argument registered event from a registered event handler.

#define	DISCONNECT3(ret, type0, type1, type2, src, event, dest, handler)
	Disconnect a three-argument registered event from a registered event handler.

#define	DISCONNECT4(ret, type0, type1, type2, type3, src, event, dest, handler)
	Disconnect a four-argument registered event from a registered event handler.

#define	DISCONNECT DISCONNECT0
	Synonym of DISCONNECT0.

#define	HANDLER(handler)
	Low-level helper that expands to the registered handler entry point.

Events
void	deleted (PIObject *o)
	Raised immediately before object destruction. More...

Detailed Description

Base class for objects that declare events, event handlers and registered methods.

PIObject is the base class for all PIP classes that need event-driven communication. It provides signal-slot mechanism, property system, and object lifetime management. PIObject stores named properties, keeps connection state and exposes a small metaobject table used by CONNECTU(), execute() and related APIs. Queued delivery runs on the performer object and requires explicit draining through callQueuedEvents() or maybeCallQueuedEvents().

Events and Event handlers

PIObject provide notification mechanism similar Qt but implemented on language capabilities without any special preprocessors or compilers. Any class inherits PIObject should use macro PIOBJECT() immediate after declaration to proper compile.

Event is a some abstract event that can be raised at any time as common method. Event is a function but declared with special macro EVENT() and don`t need definition. To raise event simply execute event function.

Event handler is a function but declared with special macro EVENT_HANDLER(). It need definition as common method. You can use event handlers as ordinary functions.

Main goal of this mechanism is perform abstract connections between various objects. This functionality provide macro CONNECT(), CONNECTU() and CONNECTL() which connect some event of first object to some event handler or event of second object. Each event can be connected any times to any event handlers.

CONNECT() macros family work with explicit subclasses of PIObject with compile-time check of events and handlers
CONNECTU() macro can work implicit subclasses of PIObject with run-time check of events and handlers
CONNECTU_QUEUED() macro similar to CONNECTU() macro but queue execution with performer object instead of handler direct call
CONNECTL() macro work with implicit subclasses of PIObject and lambda-function

Example:

class ObjectA: public PIObject {
    PIOBJECT(ObjectA)
public:
    EVENT_HANDLER1(void, handlerA, const PIString & , str) {piCoutObj << "handler A:" << str;}
    EVENT1(eventA1, const PIString & , str);
    EVENT2(eventA2, int, i, float, f);
};
 
class ObjectB: public PIObject {
    PIOBJECT(ObjectB)
public:
    EVENT_HANDLER2(void, handlerB, int, i, float, f) {piCoutObj << "handler B:" << i << "," << f;}
    EVENT1(eventB, PIString, str);
};
 
int main(int argc, char * argv[]) {
    ObjectA obj_a;
    ObjectB obj_b;
    
    CONNECT2(void, int, float, &obj_a, eventA2, &obj_b, handlerB);
    obj_a.eventA2(2, 0.5);
    
    CONNECT1(void, PIString, &obj_b, eventB, &obj_a, handlerA);
    obj_b.eventB("event to handler");
    
    CONNECTU(&obj_a, eventA1, &obj_b, eventB);
    obj_a.eventA1("event to event");
 
    obj_a.piDisconnect("eventA1");
    CONNECTL(&obj_a, eventA1, ([](const PIString & str){piCout << str;}));
    obj_a.eventA1("event to lambda");
};

Result:

handler B: 2 , 0.5
handler A: event to handler
handler A: event to event
event to lambda

Member Function Documentation

◆ setProperty()

void PIObject::setProperty	(	const char *	name,
		const PIVariant &	value
	)

inline

Sets the property "name" to "value" and creates it if needed.

Calls propertyChanged() after updating the stored value.

◆ setThreadSafe()

void PIObject::setThreadSafe ( bool yes )

inline

Enables or disables the internal object mutex during handler execution.

This flag affects direct and queued handler invocation for this object, but does not describe full thread-safety of the class.

◆ execute()

bool PIObject::execute	(	const PIString &	method,
		const PIVector< PIVariantSimple > &	vl
	)

Executes a registered method or handler method by name with the supplied arguments.

This helper works only with the registered-method table built from EVENT_HANDLER*() and EVENT*() declarations. It does not provide arbitrary reflection or complex overload resolution: the implementation selects a suitable registered method by name and argument count.

◆ executeQueued()

bool PIObject::executeQueued	(	PIObject *	performer,
		const PIString &	method,
		const PIVector< PIVariantSimple > &	vl
	)

Queues execution of a registered method on the performer object.

Delivery happens only when "performer" later calls callQueuedEvents() or maybeCallQueuedEvents(). Argument values are transported through PIVariantSimple, so queued arguments should be representable there.

◆ maybeCallQueuedEvents()

bool PIObject::maybeCallQueuedEvents ( )

inline

Executes queued deliveries only when this object was used as a performer.

This helper is cheaper than unconditional callQueuedEvents() for objects that are rarely used as performer targets.

◆ deleteLater()

void PIObject::deleteLater ( )

Schedules the object for deferred deletion.

On first call background thread started to delete objects. Each object deletes when it`s outside from any events and hadlers.

◆ deleted()

void PIObject::deleted ( PIObject * o )

Raised immediately before object destruction.

Warning

This event raised from destructor, so use only "o" numeric value, don`t try to cast deleted object to some subclass!

◆ emitter()

PIObject * PIObject::emitter ( ) const

inlineprotected

Returns the source object that raised the current event.

This value is valid only while an event handler is running.

Friends And Related Function Documentation

◆ CONNECTU

#define CONNECTU	(	src,
		event,
		dest,
		handler
	)

"handler" can accept a prefix of "event" arguments. This macro resolves registered methods by name at run time and returns PIObject::Connection.

◆ CONNECTU_QUEUED

#define CONNECTU_QUEUED	(	src,
		event,
		dest,
		handler,
		performer
	)

"handler" can accept a prefix of "event" arguments. Delivery is queued on the performer object and runs only when that object calls PIObject::callQueuedEvents() or PIObject::maybeCallQueuedEvents(). All argument types should be registered by REGISTER_VARIANT() macro, but many common and PIP types already done. Returns PIObject::Connection.

◆ CONNECTL

#define CONNECTL	(	src,
		event,
		functor
	)

"event" and "functor" must have the same argument list. Wrap "functor" in () when the lambda expression is complex. Returns PIObject::Connection.

◆ CONNECT0

#define CONNECT0	(	ret,
		src,
		event,
		dest,
		handler
	)

Deprecated:: Use CONNECTU() instead

Prefer CONNECTU() for new code.

◆ CONNECT1

#define CONNECT1	(	ret,
		type0,
		src,
		event,
		dest,
		handler
	)

Deprecated:: Use CONNECTU() instead

◆ CONNECT2

#define CONNECT2	(	ret,
		type0,
		type1,
		src,
		event,
		dest,
		handler
	)

Deprecated:: Use CONNECTU() instead

◆ CONNECT3

#define CONNECT3	(	ret,
		type0,
		type1,
		type2,
		src,
		event,
		dest,
		handler
	)

Deprecated:: Use CONNECTU() instead

◆ CONNECT4

#define CONNECT4	(	ret,
		type0,
		type1,
		type2,
		type3,
		src,
		event,
		dest,
		handler
	)

Deprecated:: Use CONNECTU() instead

◆ CONNECT

#define CONNECT CONNECT0

Deprecated:: Use CONNECTU() instead

◆ WEAK_CONNECT0

#define WEAK_CONNECT0	(	ret,
		src,
		event,
		dest,
		handler
	)

Deprecated:: Use CONNECTU() instead

◆ WEAK_CONNECT1

#define WEAK_CONNECT1	(	ret,
		type0,
		src,
		event,
		dest,
		handler
	)

Deprecated:: Use CONNECTU() instead

◆ WEAK_CONNECT2

#define WEAK_CONNECT2	(	ret,
		type0,
		type1,
		src,
		event,
		dest,
		handler
	)

Deprecated:: Use CONNECTU() instead

◆ WEAK_CONNECT3

#define WEAK_CONNECT3	(	ret,
		type0,
		type1,
		type2,
		src,
		event,
		dest,
		handler
	)

Deprecated:: Use CONNECTU() instead

◆ WEAK_CONNECT4

#define WEAK_CONNECT4	(	ret,
		type0,
		type1,
		type2,
		type3,
		src,
		event,
		dest,
		handler
	)

Deprecated:: Use CONNECTU() instead

◆ WEAK_CONNECT

#define WEAK_CONNECT WEAK_CONNECT0

Deprecated:: Use CONNECTU() instead

Classes

Public Member Functions

Static Public Member Functions

Protected Member Functions

Related Functions

Events

Detailed Description

Events and Event handlers

Member Function Documentation

◆ setProperty()

◆ setThreadSafe()

◆ execute()

◆ executeQueued()

◆ maybeCallQueuedEvents()

◆ deleteLater()

◆ deleted()

◆ emitter()

Friends And Related Function Documentation

◆ CONNECTU

◆ CONNECTU_QUEUED

◆ CONNECTL

◆ CONNECT0

◆ CONNECT1

◆ CONNECT2

◆ CONNECT3

◆ CONNECT4

◆ CONNECT

◆ WEAK_CONNECT0

◆ WEAK_CONNECT1

◆ WEAK_CONNECT2

◆ WEAK_CONNECT3

◆ WEAK_CONNECT4

◆ WEAK_CONNECT