Qt 4.8
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QDeclarativeWatchProxy Class Reference
Inheritance diagram for QDeclarativeWatchProxy:
QObject

Public Slots

void notifyValueChanged ()
 
- Public Slots inherited from QObject
void deleteLater ()
 Schedules this object for deletion. More...
 

Public Functions

 QDeclarativeWatchProxy (int id, QObject *object, int debugId, const QMetaProperty &prop, QDeclarativeWatcher *parent=0)
 
 QDeclarativeWatchProxy (int id, QDeclarativeExpression *exp, int debugId, QDeclarativeWatcher *parent=0)
 
- 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...
 

Properties

int m_debugId
 
QDeclarativeExpressionm_expr
 
int m_id
 
QObjectm_object
 
QMetaProperty m_property
 
QDeclarativeWatcherm_watch
 

Friends

class QDeclarativeWatcher
 

Additional Inherited Members

- 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...
 
- 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 58 of file qdeclarativewatcher.cpp.

Constructors and Destructors

◆ QDeclarativeWatchProxy() [1/2]

QDeclarativeWatchProxy::QDeclarativeWatchProxy ( int  id,
QObject object,
int  debugId,
const QMetaProperty prop,
QDeclarativeWatcher parent = 0 
)

Definition at line 96 of file qdeclarativewatcher.cpp.

101 : QObject(parent), m_id(id), m_watch(parent), m_object(object), m_debugId(debugId), m_property(prop), m_expr(0)
102 {
103  static int refreshIdx = -1;
104  if(refreshIdx == -1)
105  refreshIdx = QDeclarativeWatchProxy::staticMetaObject.indexOfMethod("notifyValueChanged()");
106 
107  if (prop.hasNotifySignal())
109 }
QDeclarativeWatcher * m_watch
int notifySignalIndex() const
Returns the index of the property change notifying signal if one was specified, otherwise returns -1...
static const QMetaObject staticMetaObject
This variable stores the meta-object for the class.
Definition: qobject.h:128
static bool connect(QObject *sender, int signal_index, const QObject *receiver, int method_index, int type=0, int *types=0)
Connect sender signal_index to receiver method_index with the specified type and types.
QDeclarativeExpression * m_expr
int indexOfMethod(const char *method) const
Finds method and returns its index; otherwise returns -1.
Q_INVOKABLE QObject(QObject *parent=0)
Constructs an object with parent object parent.
Definition: qobject.cpp:753
bool hasNotifySignal() const
Returns true if this property has a corresponding change notify signal; otherwise returns false...

◆ QDeclarativeWatchProxy() [2/2]

QDeclarativeWatchProxy::QDeclarativeWatchProxy ( int  id,
QDeclarativeExpression exp,
int  debugId,
QDeclarativeWatcher parent = 0 
)

Definition at line 87 of file qdeclarativewatcher.cpp.

91 : QObject(parent), m_id(id), m_watch(parent), m_object(0), m_debugId(debugId), m_expr(exp)
92 {
93  QObject::connect(m_expr, SIGNAL(valueChanged()), this, SLOT(notifyValueChanged()));
94 }
QDeclarativeWatcher * m_watch
#define SLOT(a)
Definition: qobjectdefs.h:226
#define SIGNAL(a)
Definition: qobjectdefs.h:227
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 rece...
Definition: qobject.cpp:2580
QDeclarativeExpression * m_expr
Q_INVOKABLE QObject(QObject *parent=0)
Constructs an object with parent object parent.
Definition: qobject.cpp:753

Functions

◆ notifyValueChanged

void QDeclarativeWatchProxy::notifyValueChanged ( )
slot

Definition at line 111 of file qdeclarativewatcher.cpp.

Referenced by QDeclarativeWatcher::addPropertyWatch(), QDeclarativeWatcher::addWatch(), and QDeclarativeWatchProxy().

112 {
113  QVariant v;
114  if (m_expr)
115  v = m_expr->evaluate();
117  v = m_property.read(m_object);
118 
120 }
The QVariant class acts like a union for the most common Qt data types.
Definition: qvariant.h:92
QDeclarativeWatcher * m_watch
QVariant evaluate(bool *valueIsUndefined=0)
Evaulates the expression, returning the result of the evaluation, or an invalid QVariant if the expre...
int userType() const
Returns this property&#39;s user type.
#define emit
Definition: qobjectdefs.h:76
QDeclarativeExpression * m_expr
void propertyChanged(int id, int objectId, const QMetaProperty &property, const QVariant &value)
QVariant read(const QObject *obj) const
Reads the property&#39;s value from the given object.

Friends and Related Functions

◆ QDeclarativeWatcher

friend class QDeclarativeWatcher
friend

Definition at line 77 of file qdeclarativewatcher.cpp.

Properties

◆ m_debugId

int QDeclarativeWatchProxy::m_debugId
private

Definition at line 81 of file qdeclarativewatcher.cpp.

Referenced by notifyValueChanged().

◆ m_expr

QDeclarativeExpression* QDeclarativeWatchProxy::m_expr
private

Definition at line 84 of file qdeclarativewatcher.cpp.

Referenced by notifyValueChanged(), and QDeclarativeWatchProxy().

◆ m_id

int QDeclarativeWatchProxy::m_id
private

Definition at line 78 of file qdeclarativewatcher.cpp.

Referenced by notifyValueChanged().

◆ m_object

QObject* QDeclarativeWatchProxy::m_object
private

Definition at line 80 of file qdeclarativewatcher.cpp.

Referenced by notifyValueChanged(), and QDeclarativeWatchProxy().

◆ m_property

QMetaProperty QDeclarativeWatchProxy::m_property
private

Definition at line 82 of file qdeclarativewatcher.cpp.

Referenced by notifyValueChanged().

◆ m_watch

QDeclarativeWatcher* QDeclarativeWatchProxy::m_watch
private

Definition at line 79 of file qdeclarativewatcher.cpp.

Referenced by notifyValueChanged().


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