Qt 4.8
Signals | Public Functions | Private Functions | Properties | List of all members
QDeclarativeConnections Class Reference

#include <qdeclarativeconnections_p.h>

Inheritance diagram for QDeclarativeConnections:
QObject QDeclarativeParserStatus

Signals

void targetChanged ()
 
- Signals inherited from QObject
void destroyed (QObject *=0)
 This signal is emitted immediately before the object obj is destroyed, and can not be blocked. More...
 

Public Functions

bool ignoreUnknownSignals () const
 
 QDeclarativeConnections (QObject *parent=0)
 
void setIgnoreUnknownSignals (bool ignore)
 
void setTarget (QObject *)
 
QObjecttarget () const
 
 ~QDeclarativeConnections ()
 
- Public Functions inherited from QObject
bool blockSignals (bool b)
 If block is true, signals emitted by this object are blocked (i.e., emitting a signal will not invoke anything connected to it). More...
 
const QObjectListchildren () const
 Returns a list of child objects. More...
 
bool connect (const QObject *sender, const char *signal, const char *member, Qt::ConnectionType type=Qt::AutoConnection) const
 
bool disconnect (const char *signal=0, const QObject *receiver=0, const char *member=0)
 
bool disconnect (const QObject *receiver, const char *member=0)
 
void dumpObjectInfo ()
 Dumps information about signal connections, etc. More...
 
void dumpObjectTree ()
 Dumps a tree of children to the debug output. More...
 
QList< QByteArraydynamicPropertyNames () const
 Returns the names of all properties that were dynamically added to the object using setProperty(). More...
 
virtual bool event (QEvent *)
 This virtual function receives events to an object and should return true if the event e was recognized and processed. More...
 
virtual bool eventFilter (QObject *, QEvent *)
 Filters events if this object has been installed as an event filter for the watched object. More...
 
template<typename T >
findChild (const QString &aName=QString()) const
 Returns the child of this object that can be cast into type T and that is called name, or 0 if there is no such object. More...
 
template<typename T >
QList< T > findChildren (const QString &aName=QString()) const
 Returns all children of this object with the given name that can be cast to type T, or an empty list if there are no such objects. More...
 
template<typename T >
QList< T > findChildren (const QRegExp &re) const
 
bool inherits (const char *classname) const
 Returns true if this object is an instance of a class that inherits className or a QObject subclass that inherits className; otherwise returns false. More...
 
void installEventFilter (QObject *)
 Installs an event filter filterObj on this object. More...
 
bool isWidgetType () const
 Returns true if the object is a widget; otherwise returns false. More...
 
void killTimer (int id)
 Kills the timer with timer identifier, id. More...
 
virtual const QMetaObjectmetaObject () const
 Returns a pointer to the meta-object of this object. More...
 
void moveToThread (QThread *thread)
 Changes the thread affinity for this object and its children. More...
 
QString objectName () const
 
QObjectparent () const
 Returns a pointer to the parent object. More...
 
QVariant property (const char *name) const
 Returns the value of the object's name property. More...
 
Q_INVOKABLE QObject (QObject *parent=0)
 Constructs an object with parent object parent. More...
 
void removeEventFilter (QObject *)
 Removes an event filter object obj from this object. More...
 
void setObjectName (const QString &name)
 
void setParent (QObject *)
 Makes the object a child of parent. More...
 
bool setProperty (const char *name, const QVariant &value)
 Sets the value of the object's name property to value. More...
 
void setUserData (uint id, QObjectUserData *data)
 
bool signalsBlocked () const
 Returns true if signals are blocked; otherwise returns false. More...
 
int startTimer (int interval)
 Starts a timer and returns a timer identifier, or returns zero if it could not start a timer. More...
 
QThreadthread () const
 Returns the thread in which the object lives. More...
 
QObjectUserDatauserData (uint id) const
 
virtual ~QObject ()
 Destroys the object, deleting all its child objects. More...
 
- Public Functions inherited from QDeclarativeParserStatus
 QDeclarativeParserStatus ()
 
virtual ~QDeclarativeParserStatus ()
 

Private Functions

void classBegin ()
 Invoked after class creation, but before any properties have been set. More...
 
void componentComplete ()
 Invoked after the root component that caused this instantiation has completed construction. More...
 
void connectSignals ()
 

Properties

bool ignoreUnknownSignals
 
QObjecttarget
 

Additional Inherited Members

- Public Slots inherited from QObject
void deleteLater ()
 Schedules this object for deletion. More...
 
- Static Public Functions inherited from QObject
static bool connect (const QObject *sender, const char *signal, const QObject *receiver, const char *member, Qt::ConnectionType=Qt::AutoConnection)
 Creates a connection of the given type from the signal in the sender object to the method in the receiver object. More...
 
static bool connect (const QObject *sender, const QMetaMethod &signal, const QObject *receiver, const QMetaMethod &method, Qt::ConnectionType type=Qt::AutoConnection)
 
static bool disconnect (const QObject *sender, const char *signal, const QObject *receiver, const char *member)
 Disconnects signal in object sender from method in object receiver. More...
 
static bool disconnect (const QObject *sender, const QMetaMethod &signal, const QObject *receiver, const QMetaMethod &member)
 
static uint registerUserData ()
 
static QString tr (const char *sourceText, const char *comment=0, int n=-1)
 
static QString trUtf8 (const char *sourceText, const char *comment=0, int n=-1)
 
- Static Public Variables inherited from QObject
static const QMetaObject staticMetaObject
 This variable stores the meta-object for the class. More...
 
- Protected Functions inherited from QObject
virtual void childEvent (QChildEvent *)
 This event handler can be reimplemented in a subclass to receive child events. More...
 
virtual void connectNotify (const char *signal)
 This virtual function is called when something has been connected to signal in this object. More...
 
virtual void customEvent (QEvent *)
 This event handler can be reimplemented in a subclass to receive custom events. More...
 
virtual void disconnectNotify (const char *signal)
 This virtual function is called when something has been disconnected from signal in this object. More...
 
 QObject (QObjectPrivate &dd, QObject *parent=0)
 
int receivers (const char *signal) const
 Returns the number of receivers connected to the signal. More...
 
QObjectsender () const
 Returns a pointer to the object that sent the signal, if called in a slot activated by a signal; otherwise it returns 0. More...
 
int senderSignalIndex () const
 
virtual void timerEvent (QTimerEvent *)
 This event handler can be reimplemented in a subclass to receive timer events for the object. More...
 
- Protected Variables inherited from QObject
QScopedPointer< QObjectDatad_ptr
 
- Static Protected Variables inherited from QObject
static const QMetaObject staticQtMetaObject
 

Detailed Description

Definition at line 61 of file qdeclarativeconnections_p.h.

Constructors and Destructors

◆ QDeclarativeConnections()

QDeclarativeConnections::QDeclarativeConnections ( QObject parent = 0)

Definition at line 133 of file qdeclarativeconnections.cpp.

133  :
135 {
136 }
Q_INVOKABLE QObject(QObject *parent=0)
Constructs an object with parent object parent.
Definition: qobject.cpp:753

◆ ~QDeclarativeConnections()

QDeclarativeConnections::~QDeclarativeConnections ( )

Definition at line 138 of file qdeclarativeconnections.cpp.

139 {
140 }

Functions

◆ classBegin()

void QDeclarativeConnections::classBegin ( )
privatevirtual

Invoked after class creation, but before any properties have been set.

Implements QDeclarativeParserStatus.

Definition at line 285 of file qdeclarativeconnections.cpp.

286 {
288  d->componentcomplete=false;
289 }
QDeclarativeParserStatus ** d
#define Q_D(Class)
Definition: qglobal.h:2482

◆ componentComplete()

void QDeclarativeConnections::componentComplete ( )
privatevirtual

Invoked after the root component that caused this instantiation has completed construction.

At this point all static values and binding values have been assigned to the class.

Implements QDeclarativeParserStatus.

Definition at line 291 of file qdeclarativeconnections.cpp.

292 {
294  d->componentcomplete=true;
295  connectSignals();
296 }
QDeclarativeParserStatus ** d
#define Q_D(Class)
Definition: qglobal.h:2482

◆ connectSignals()

void QDeclarativeConnections::connectSignals ( )
private

Definition at line 256 of file qdeclarativeconnections.cpp.

Referenced by componentComplete(), and setTarget().

257 {
259  if (!d->componentcomplete || (d->targetSet && !target()))
260  return;
261 
262  QDataStream ds(d->data);
263  while (!ds.atEnd()) {
264  QString propName;
265  ds >> propName;
266  QString script;
267  ds >> script;
268  QDeclarativeProperty prop(target(), propName);
269  if (prop.isValid() && (prop.type() & QDeclarativeProperty::SignalProperty)) {
270  QDeclarativeBoundSignal *signal =
271  new QDeclarativeBoundSignal(target(), prop.method(), this);
272  QDeclarativeExpression *expression = new QDeclarativeExpression(qmlContext(this), 0, script);
274  if (ddata && ddata->outerContext && !ddata->outerContext->url.isEmpty())
275  expression->setSourceLocation(ddata->outerContext->url.toString(), ddata->lineNumber);
276  signal->setExpression(expression);
277  d->boundsignals += signal;
278  } else {
279  if (!d->ignoreUnknownSignals)
280  qmlInfo(this) << tr("Cannot assign to non-existent property \"%1\"").arg(propName);
281  }
282  }
283 }
QDeclarativeContextData * outerContext
static QDeclarativeData * get(const QObject *object, bool create=false)
QDeclarativeParserStatus ** d
QString toString(FormattingOptions options=None) const
Returns the human-displayable string representation of the URL.
Definition: qurl.cpp:5896
bool isEmpty() const
Returns true if the URL has no data; otherwise returns false.
Definition: qurl.cpp:4317
static QString tr(const char *sourceText, const char *comment=0, int n=-1)
The QString class provides a Unicode character string.
Definition: qstring.h:83
Q_DECLARATIVE_EXPORT QDeclarativeContext * qmlContext(const QObject *)
#define Q_D(Class)
Definition: qglobal.h:2482
QDeclarativeExpression * setExpression(QDeclarativeExpression *)
Sets the signal expression to e.
QObject * target() const
Q_CORE_EXPORT int QT_FASTCALL script(uint ucs4)
QString arg(qlonglong a, int fieldwidth=0, int base=10, const QChar &fillChar=QLatin1Char(' ')) const Q_REQUIRED_RESULT
Definition: qstring.cpp:7186
The QDeclarativeProperty class abstracts accessing properties on objects created from QML...
The QDataStream class provides serialization of binary data to a QIODevice.
Definition: qdatastream.h:71
The QDeclarativeExpression class evaluates JavaScript in a QML context.
QDeclarativeInfo qmlInfo(const QObject *me)

◆ ignoreUnknownSignals()

bool QDeclarativeConnections::ignoreUnknownSignals ( ) const

Referenced by setTarget().

◆ setIgnoreUnknownSignals()

void QDeclarativeConnections::setIgnoreUnknownSignals ( bool  ignore)

Definition at line 198 of file qdeclarativeconnections.cpp.

199 {
201  d->ignoreUnknownSignals = ignore;
202 }
QDeclarativeParserStatus ** d
static bool ignore(const char *test, const char *const *table)
Definition: qaxserver.cpp:660
#define Q_D(Class)
Definition: qglobal.h:2482

◆ setTarget()

void QDeclarativeConnections::setTarget ( QObject obj)

Definition at line 160 of file qdeclarativeconnections.cpp.

161 {
163  d->targetSet = true; // even if setting to 0, it is *set*
164  if (d->target == obj)
165  return;
166  foreach (QDeclarativeBoundSignal *s, d->boundsignals) {
167  // It is possible that target is being changed due to one of our signal
168  // handlers -> use deleteLater().
169  if (s->isEvaluating())
170  s->deleteLater();
171  else
172  delete s;
173  }
174  d->boundsignals.clear();
175  d->target = obj;
176  connectSignals();
178 }
QDeclarativeParserStatus ** d
#define Q_D(Class)
Definition: qglobal.h:2482
#define emit
Definition: qobjectdefs.h:76
void deleteLater()
Schedules this object for deletion.
Definition: qobject.cpp:2145

◆ target()

QObject* QDeclarativeConnections::target ( ) const

◆ targetChanged

void QDeclarativeConnections::targetChanged ( )
signal

Referenced by setTarget().

Properties

◆ ignoreUnknownSignals

bool QDeclarativeConnections::ignoreUnknownSignals
private

Definition at line 68 of file qdeclarativeconnections_p.h.

◆ target

QObject * QDeclarativeConnections::target
private

Definition at line 67 of file qdeclarativeconnections_p.h.


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