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

#include <qdeclarativewatcher_p.h>

Inheritance diagram for QDeclarativeWatcher:
QObject

Signals

void propertyChanged (int id, int objectId, const QMetaProperty &property, const QVariant &value)
 
- 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 addWatch (int id, quint32 objectId)
 
bool addWatch (int id, quint32 objectId, const QByteArray &property)
 
bool addWatch (int id, quint32 objectId, const QString &expr)
 
 QDeclarativeWatcher (QObject *=0)
 
void removeWatch (int id)
 
- 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...
 

Private Functions

void addPropertyWatch (int id, QObject *object, quint32 objectId, const QMetaProperty &property)
 

Properties

QHash< int, QList< QPointer< QDeclarativeWatchProxy > > > m_proxies
 

Friends

class QDeclarativeWatchProxy
 

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 70 of file qdeclarativewatcher_p.h.

Constructors and Destructors

◆ QDeclarativeWatcher()

QDeclarativeWatcher::QDeclarativeWatcher ( QObject parent = 0)

Definition at line 123 of file qdeclarativewatcher.cpp.

124  : QObject(parent)
125 {
126 }
Q_INVOKABLE QObject(QObject *parent=0)
Constructs an object with parent object parent.
Definition: qobject.cpp:753

Functions

◆ addPropertyWatch()

void QDeclarativeWatcher::addPropertyWatch ( int  id,
QObject object,
quint32  objectId,
const QMetaProperty property 
)
private

Definition at line 178 of file qdeclarativewatcher.cpp.

Referenced by addWatch().

179 {
180  QDeclarativeWatchProxy *proxy = new QDeclarativeWatchProxy(id, object, debugId, property, this);
181  m_proxies[id].append(proxy);
182 
183  proxy->notifyValueChanged();
184 }
QHash< int, QList< QPointer< QDeclarativeWatchProxy > > > m_proxies
friend class QDeclarativeWatchProxy

◆ addWatch() [1/3]

bool QDeclarativeWatcher::addWatch ( int  id,
quint32  objectId 
)

Definition at line 128 of file qdeclarativewatcher.cpp.

Referenced by QDeclarativeEngineDebugService::messageReceived().

129 {
131  if (object) {
132  int propCount = object->metaObject()->propertyCount();
133  for (int ii=0; ii<propCount; ii++)
134  addPropertyWatch(id, object, debugId, object->metaObject()->property(ii));
135  return true;
136  }
137  return false;
138 }
static QObject * objectForId(int)
Returns the object for unique id.
void addPropertyWatch(int id, QObject *object, quint32 objectId, const QMetaProperty &property)
The QObject class is the base class of all Qt objects.
Definition: qobject.h:111
virtual const QMetaObject * metaObject() const
Returns a pointer to the meta-object of this object.
QMetaProperty property(int index) const
Returns the meta-data for the property with the given index.

◆ addWatch() [2/3]

bool QDeclarativeWatcher::addWatch ( int  id,
quint32  objectId,
const QByteArray property 
)

Definition at line 140 of file qdeclarativewatcher.cpp.

141 {
143  if (object) {
144  int index = object->metaObject()->indexOfProperty(property.constData());
145  if (index >= 0) {
146  addPropertyWatch(id, object, debugId, object->metaObject()->property(index));
147  return true;
148  }
149  }
150  return false;
151 }
static QObject * objectForId(int)
Returns the object for unique id.
void addPropertyWatch(int id, QObject *object, quint32 objectId, const QMetaProperty &property)
The QObject class is the base class of all Qt objects.
Definition: qobject.h:111
const char * constData() const
Returns a pointer to the data stored in the byte array.
Definition: qbytearray.h:433
quint16 index
virtual const QMetaObject * metaObject() const
Returns a pointer to the meta-object of this object.
QMetaProperty property(int index) const
Returns the meta-data for the property with the given index.

◆ addWatch() [3/3]

bool QDeclarativeWatcher::addWatch ( int  id,
quint32  objectId,
const QString expr 
)

Definition at line 153 of file qdeclarativewatcher.cpp.

154 {
156  QDeclarativeContext *context = qmlContext(object);
157  if (context) {
158  QDeclarativeExpression *exprObj = new QDeclarativeExpression(context, object, expr);
159  exprObj->setNotifyOnValueChanged(true);
160  QDeclarativeWatchProxy *proxy = new QDeclarativeWatchProxy(id, exprObj, objectId, this);
161  exprObj->setParent(proxy);
162  m_proxies[id].append(proxy);
163  proxy->notifyValueChanged();
164  return true;
165  }
166  return false;
167 }
static QObject * objectForId(int)
Returns the object for unique id.
The QObject class is the base class of all Qt objects.
Definition: qobject.h:111
Q_DECLARATIVE_EXPORT QDeclarativeContext * qmlContext(const QObject *)
QHash< int, QList< QPointer< QDeclarativeWatchProxy > > > m_proxies
void setNotifyOnValueChanged(bool)
Sets whether the valueChanged() signal is emitted when the expression&#39;s evaluated value changes...
void setParent(QObject *)
Makes the object a child of parent.
Definition: qobject.cpp:1950
friend class QDeclarativeWatchProxy
The QDeclarativeContext class defines a context within a QML engine.
The QDeclarativeExpression class evaluates JavaScript in a QML context.

◆ propertyChanged

void QDeclarativeWatcher::propertyChanged ( int  id,
int  objectId,
const QMetaProperty property,
const QVariant value 
)
signal

◆ removeWatch()

void QDeclarativeWatcher::removeWatch ( int  id)

Definition at line 169 of file qdeclarativewatcher.cpp.

Referenced by QDeclarativeEngineDebugService::messageReceived().

170 {
171  if (!m_proxies.contains(id))
172  return;
173 
175  qDeleteAll(proxies);
176 }
T take(const Key &key)
Removes the item with the key from the hash and returns the value associated with it...
Definition: qhash.h:807
bool contains(const Key &key) const
Returns true if the hash contains an item with the key; otherwise returns false.
Definition: qhash.h:872
QHash< int, QList< QPointer< QDeclarativeWatchProxy > > > m_proxies
Q_OUTOFLINE_TEMPLATE void qDeleteAll(ForwardIterator begin, ForwardIterator end)
Definition: qalgorithms.h:319
The QList class is a template class that provides lists.
Definition: qdatastream.h:62

Friends and Related Functions

◆ QDeclarativeWatchProxy

Definition at line 86 of file qdeclarativewatcher_p.h.

Referenced by addPropertyWatch(), and addWatch().

Properties

◆ m_proxies

QHash<int, QList<QPointer<QDeclarativeWatchProxy> > > QDeclarativeWatcher::m_proxies
private

Definition at line 89 of file qdeclarativewatcher_p.h.

Referenced by addPropertyWatch(), addWatch(), and removeWatch().


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