QDeclarativeNotifierEndpoint Class Reference

#include <qdeclarativenotifier_p.h>

Classes
struct	Notifier
struct	Signal

Public Functions
void	connect (QObject *source, int sourceSignal)
void	connect (QDeclarativeNotifier *)
void	copyAndClear (QDeclarativeNotifierEndpoint &other)
void	deref ()
void	disconnect ()
bool	isConnected ()
bool	isConnected (QObject *source, int sourceSignal)
bool	isConnected (QDeclarativeNotifier *)
	QDeclarativeNotifierEndpoint ()
	QDeclarativeNotifierEndpoint (QObject *t, int m)
	~QDeclarativeNotifierEndpoint ()

Public Variables
QObject *	target
int	targetMethod
Notifier	notifier
qint64	q_for_alignment_1
double	q_for_alignment_2
Signal *	signal
struct {
union {
qint64   q_for_alignment_1
double   q_for_alignment_2
char   signalData [sizeof(Signal)]
}
Signal *   signal
}	signal

Private Types
enum	{ InvalidType, SignalType, NotifierType }

Private Functions
Notifier *	asNotifier ()
Signal *	asSignal ()
Notifier *	toNotifier ()
Signal *	toSignal ()

Properties
union {
Notifier   notifier
struct {
union {
qint64   q_for_alignment_1
double   q_for_alignment_2
char   signalData [sizeof(Signal)]
}
Signal *   signal
}   signal
};
quint16	refCount
enum QDeclarativeNotifierEndpoint:: { ... }	type

Friends
class	QDeclarativeNotifier

Detailed Description

Definition at line 65 of file qdeclarativenotifier_p.h.

Enumerations

anonymous enum

anonymous enum

private

Enumerator
InvalidType
SignalType
NotifierType

Definition at line 106 of file qdeclarativenotifier_p.h.

{ InvalidType, SignalType, NotifierType } type;

Constructors and Destructors

QDeclarativeNotifierEndpoint() [1/2]

QDeclarativeNotifierEndpoint::QDeclarativeNotifierEndpoint ( )

inline

Definition at line 153 of file qdeclarativenotifier_p.h.

    : target(0), targetMethod(0), type(InvalidType), refCount(0)
{
}

QDeclarativeNotifierEndpoint() [2/2]

QDeclarativeNotifierEndpoint::QDeclarativeNotifierEndpoint ( QObject *  t, int  m  )

inline

Definition at line 158 of file qdeclarativenotifier_p.h.

: target(t), targetMethod(m), type(InvalidType), refCount(0)
{
}

~QDeclarativeNotifierEndpoint()

QDeclarativeNotifierEndpoint::~QDeclarativeNotifierEndpoint ( )

inline

Definition at line 163 of file qdeclarativenotifier_p.h.

{
    disconnect();
    if (SignalType == type) {
        Signal *s = asSignal();
        s->~Signal();
    }
}

Functions

asNotifier()

QDeclarativeNotifierEndpoint::Notifier * QDeclarativeNotifierEndpoint::asNotifier ( )

inlineprivate

Definition at line 266 of file qdeclarativenotifier_p.h.

Referenced by connect(), copyAndClear(), disconnect(), QDeclarativeNotifier::emitNotify(), isConnected(), toNotifier(), and QDeclarativeNotifier::~QDeclarativeNotifier().

{ 
    Q_ASSERT(type == NotifierType);
    return &notifier;
}

asSignal()

QDeclarativeNotifierEndpoint::Signal * QDeclarativeNotifierEndpoint::asSignal ( )

inlineprivate

Definition at line 283 of file qdeclarativenotifier_p.h.

Referenced by disconnect(), isConnected(), toNotifier(), toSignal(), and ~QDeclarativeNotifierEndpoint().

{ 
    Q_ASSERT(type == SignalType);
    return signal.signal;
}

connect() [1/2]

void QDeclarativeNotifierEndpoint::connect	(	QObject *	source,
		int	sourceSignal
	)

Definition at line 70 of file qdeclarativenotifier.cpp.

Referenced by QDeclarativeItemPrivate::parentProperty(), QObject_objectName(), QDeclarativeCompiledBindingsPrivate::subscribe(), QDeclarativeCompiledBindingsPrivate::subscribeId(), and QDeclarativeQtScriptExpression::updateGuards().

{
    Signal *s = toSignal();
    
    if (s->source == source && s->sourceSignal == sourceSignal) {
        refCount++;
        return;
    }

    disconnect();

    QDeclarativePropertyPrivate::connect(source, sourceSignal, target, targetMethod);

    s->source = source;
    s->sourceSignal = sourceSignal;
    refCount++;
}

connect() [2/2]

void QDeclarativeNotifierEndpoint::connect ( QDeclarativeNotifier *  notifier )

inline

Definition at line 193 of file qdeclarativenotifier_p.h.

{
    Notifier *n = toNotifier();
    
    if (n->notifier == notifier) {
        refCount++;
        return;
    }

    disconnect();

    n->next = notifier->endpoints;
    if (n->next) { n->next->asNotifier()->prev = &n->next; }
    notifier->endpoints = this;
    n->prev = &notifier->endpoints;
    n->notifier = notifier;
    refCount++;
}

copyAndClear()

void QDeclarativeNotifierEndpoint::copyAndClear

(

QDeclarativeNotifierEndpoint &

other

)

Definition at line 88 of file qdeclarativenotifier.cpp.

{
    other.disconnect();

    other.target = target;
    other.targetMethod = targetMethod;

    if (!isConnected())
        return;

    if (SignalType == type) {
        Signal *other_s = other.toSignal();
        Signal *s = asSignal();

        other_s->source = s->source;
        other_s->sourceSignal = s->sourceSignal;
        s->source = 0;
    } else if(NotifierType == type) {
        Notifier *other_n = other.toNotifier();
        Notifier *n = asNotifier();

        other_n->notifier = n->notifier;
        other_n->disconnected = n->disconnected;
        if (other_n->disconnected) *other_n->disconnected = &other;

        if (n->next) {
            other_n->next = n->next;
            n->next->asNotifier()->prev = &other_n->next;
        }
        other_n->prev = n->prev;
        *other_n->prev = &other;

        n->prev = 0;
        n->next = 0;
        n->disconnected = 0;
        n->notifier = 0;
    } 
}

deref()

void QDeclarativeNotifierEndpoint::deref ( )

inline

Definition at line 239 of file qdeclarativenotifier_p.h.

Referenced by QDeclarativeCompiledBindingsPrivate::disconnectOne().

{
    refCount--;
    if (refCount <= 0)
        disconnect();
}

disconnect()

void QDeclarativeNotifierEndpoint::disconnect ( )

inline

Definition at line 212 of file qdeclarativenotifier_p.h.

Referenced by connect(), copyAndClear(), deref(), QDeclarativeCompiledBindingsPrivate::disconnectAll(), QDeclarativeCompiledBindingsPrivate::subscribe(), QDeclarativeCompiledBindingsPrivate::subscribeId(), toNotifier(), toSignal(), QDeclarativeQtScriptExpression::updateGuards(), and ~QDeclarativeNotifierEndpoint().

{
    if (type == SignalType) {
        Signal *s = asSignal();
        if (s->source) {
            QMetaObject::disconnectOne(s->source, s->sourceSignal, target, targetMethod);
            QObjectPrivate * const priv = QObjectPrivate::get(s->source);
            const QMetaMethod signal = s->source->metaObject()->method(s->sourceSignal);
            QVarLengthArray<char> signalSignature;
            QObjectPrivate::signalSignature(signal, &signalSignature);
            priv->disconnectNotify(signalSignature.constData());
            s->source = 0;
        }
    } else if (type == NotifierType) {
        Notifier *n = asNotifier();

        if (n->next) n->next->asNotifier()->prev = n->prev;
        if (n->prev) *n->prev = n->next;
        if (n->disconnected) *n->disconnected = 0;
        n->next = 0;
        n->prev = 0;
        n->disconnected = 0;
        n->notifier = 0;
    }
    refCount = 0;
}

isConnected() [1/3]

bool QDeclarativeNotifierEndpoint::isConnected ( )

inline

Definition at line 172 of file qdeclarativenotifier_p.h.

Referenced by QDeclarativeCompiledBindingsPrivate::disconnectAll(), and QDeclarativeQtScriptExpression::updateGuards().

{
    if (SignalType == type) {
        return asSignal()->source;
    } else if (NotifierType == type) {
        return asNotifier()->notifier;
    } else {
        return false;
    }
}

isConnected() [2/3]

bool QDeclarativeNotifierEndpoint::isConnected ( QObject *  source, int  sourceSignal  )

inline

Definition at line 183 of file qdeclarativenotifier_p.h.

{
    return SignalType == type && asSignal()->source == source && asSignal()->sourceSignal == sourceSignal;
}

isConnected() [3/3]

bool QDeclarativeNotifierEndpoint::isConnected ( QDeclarativeNotifier *  notifier )

inline

Definition at line 188 of file qdeclarativenotifier_p.h.

{
    return NotifierType == type && asNotifier()->notifier == notifier;
}

toNotifier()

QDeclarativeNotifierEndpoint::Notifier * QDeclarativeNotifierEndpoint::toNotifier ( )

inlineprivate

Definition at line 246 of file qdeclarativenotifier_p.h.

Referenced by connect(), and copyAndClear().

{
    if (NotifierType == type) 
        return asNotifier();

    if (SignalType == type) {
        disconnect();
        Signal *s = asSignal();
        s->~Signal();
    }

    type = NotifierType;
    Notifier *n = asNotifier();
    n->next = 0;
    n->prev = 0;
    n->disconnected = 0;
    n->notifier = 0;
    return n;
}

toSignal()

QDeclarativeNotifierEndpoint::Signal * QDeclarativeNotifierEndpoint::toSignal ( )

inlineprivate

Definition at line 272 of file qdeclarativenotifier_p.h.

Referenced by copyAndClear().

{
    if (SignalType == type) 
        return asSignal();

    disconnect();
    signal.signal = new (&signal.signalData) Signal;
    type = SignalType;
    return signal.signal;
}

Friends and Related Functions

QDeclarativeNotifier

friend class QDeclarativeNotifier

friend

Definition at line 91 of file qdeclarativenotifier_p.h.

Properties

@139

union { ... }

notifier

Notifier QDeclarativeNotifierEndpoint::notifier

Definition at line 116 of file qdeclarativenotifier_p.h.

Referenced by asNotifier(), connect(), and isConnected().

q_for_alignment_1

qint64 QDeclarativeNotifierEndpoint::q_for_alignment_1

Definition at line 112 of file qdeclarativenotifier_p.h.

q_for_alignment_2

double QDeclarativeNotifierEndpoint::q_for_alignment_2

Definition at line 113 of file qdeclarativenotifier_p.h.

refCount

quint16 QDeclarativeNotifierEndpoint::refCount

private

Definition at line 119 of file qdeclarativenotifier_p.h.

Referenced by connect(), deref(), and disconnect().

signal [1/2]

Signal* QDeclarativeNotifierEndpoint::signal

Definition at line 109 of file qdeclarativenotifier_p.h.

Referenced by asSignal(), disconnect(), and toSignal().

signal [2/2]

struct { ... } QDeclarativeNotifierEndpoint::signal

signalData

char QDeclarativeNotifierEndpoint::signalData[sizeof(Signal)]

Definition at line 111 of file qdeclarativenotifier_p.h.

target

QObject* QDeclarativeNotifierEndpoint::target

Definition at line 72 of file qdeclarativenotifier_p.h.

Referenced by copyAndClear(), disconnect(), QDeclarativeNotifier::emitNotify(), QDeclarativeCompiledBindingsPrivate::run(), QDeclarativeCompiledBindingsPrivate::subscribe(), QDeclarativeCompiledBindingsPrivate::subscribeId(), and QDeclarativeQtScriptExpression::updateGuards().

targetMethod

int QDeclarativeNotifierEndpoint::targetMethod

Definition at line 73 of file qdeclarativenotifier_p.h.

Referenced by copyAndClear(), disconnect(), QDeclarativeNotifier::emitNotify(), QDeclarativeCompiledBindingsPrivate::run(), QDeclarativeCompiledBindingsPrivate::subscribe(), QDeclarativeCompiledBindingsPrivate::subscribeId(), and QDeclarativeQtScriptExpression::updateGuards().

type

enum { ... } QDeclarativeNotifierEndpoint::type

Referenced by asNotifier(), asSignal(), disconnect(), isConnected(), toNotifier(), toSignal(), and ~QDeclarativeNotifierEndpoint().

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The documentation for this class was generated from the following files:

• /src/declarative/qml/qdeclarativenotifier_p.h
• /src/declarative/qml/qdeclarativenotifier.cpp