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Qt 4.8
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Qt 4.8
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The QAbstractState class is the base class of states of a QStateMachine. More...
#include <qabstractstate.h>
Signals | |
| void | entered () |
| This signal is emitted when the state has been entered (after onEntry() has been called). More... | |
| void | exited () |
| This signal is emitted when the state has been exited (after onExit() has been called). More... | |
 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 | |
| QStateMachine * | machine () const |
| Returns the state machine that this state is part of, or 0 if the state is not part of a state machine. More... | |
| QState * | parentState () const |
| Returns this state's parent state, or 0 if the state has no parent state. More... | |
| ~QAbstractState () | |
| Destroys this state. More... | |
| 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 QObjectList & | children () 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< QByteArray > | dynamicPropertyNames () const |
| Returns the names of all properties that were dynamically added to the object using setProperty(). 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 > | |
| 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 QMetaObject * | metaObject () 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 |
| QObject * | parent () 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... | |
| QThread * | thread () const |
| Returns the thread in which the object lives. More... | |
| QObjectUserData * | userData (uint id) const |
| virtual | ~QObject () |
| Destroys the object, deleting all its child objects. More... | |
Protected Functions | |
| bool | event (QEvent *e) |
| Reimplemented Function More... | |
| virtual void | onEntry (QEvent *event)=0 |
| This function is called when the state is entered. More... | |
| virtual void | onExit (QEvent *event)=0 |
| This function is called when the state is exited. More... | |
| QAbstractState (QState *parent=0) | |
| Constructs a new state with the given parent state. More... | |
| QAbstractState (QAbstractStatePrivate &dd, QState *parent) | |
| 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... | |
| QObject * | sender () 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... | |
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 Variables inherited from QObject | |
| QScopedPointer< QObjectData > | d_ptr |
| Static Protected Variables inherited from QObject | |
| static const QMetaObject | staticQtMetaObject |
| Related Functions inherited from QObject | |
| T | qFindChildqFindChildren (const QObject *obj, const QString &name)() |
| QList< T > | qFindChildrenqFindChildren (const QObject *obj, const QString &name)() |
| QList< T > | qFindChildrenqFindChildren (const QObject *obj, const QRegExp ®Exp)() |
| T * | qobject_cast (QObject *object) |
| QObjectList | |
| void * | qt_find_obj_child (QObject *parent, const char *type, const QString &name) |
| Returns a pointer to the object named name that inherits type and with a given parent. More... | |
The QAbstractState class is the base class of states of a QStateMachine.
The QAbstractState class is the abstract base class of states that are part of a QStateMachine. It defines the interface that all state objects have in common. QAbstractState is part of The State Machine Framework.
The entered() signal is emitted when the state has been entered. The exited() signal is emitted when the state has been exited.
The parentState() function returns the state's parent state. The machine() function returns the state machine that the state is part of.
The onEntry() function is called when the state is entered; reimplement this function to perform custom processing when the state is entered.
The onExit() function is called when the state is exited; reimplement this function to perform custom processing when the state is exited.
Definition at line 59 of file qabstractstate.h.
| QAbstractState::~QAbstractState | ( | ) |
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protected |
Constructs a new state with the given parent state.
Definition at line 137 of file qabstractstate.cpp.
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protected |
Definition at line 145 of file qabstractstate.cpp.
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signal |
This signal is emitted when the state has been entered (after onEntry() has been called).
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protectedvirtual |
Reimplemented Function
Reimplemented from QObject.
Reimplemented in QStateMachine, QState, QHistoryState, and QFinalState.
Definition at line 217 of file qabstractstate.cpp.
Referenced by QFinalState::event(), QHistoryState::event(), and QState::event().
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signal |
This signal is emitted when the state has been exited (after onExit() has been called).
| QStateMachine * QAbstractState::machine | ( | ) | const |
Returns the state machine that this state is part of, or 0 if the state is not part of a state machine.
Definition at line 172 of file qabstractstate.cpp.
Referenced by QStateMachine::addState(), QStateMachinePrivate::addStatesToEnter(), QState::addTransition(), QAbstractTransitionPrivate::machine(), QSignalEventGenerator::qt_metacall(), QStateMachine::removeState(), QState::setErrorState(), QStateMachinePrivate::stateEntryLessThan(), and QStateMachinePrivate::stateExitLessThan().
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protectedpure virtual |
This function is called when the state is entered.
The given event is what caused the state to be entered. Reimplement this function to perform custom processing when the state is entered.
Implemented in QStateMachine, QState, QHistoryState, and QFinalState.
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protectedpure virtual |
This function is called when the state is exited.
The given event is what caused the state to be exited. Reimplement this function to perform custom processing when the state is exited.
Implemented in QStateMachine, QState, QHistoryState, and QFinalState.
| QState * QAbstractState::parentState | ( | ) | const |
Returns this state's parent state, or 0 if the state has no parent state.
Definition at line 160 of file qabstractstate.cpp.
Referenced by QStateMachinePrivate::addStatesToEnter(), QStateMachinePrivate::applyProperties(), QStateMachinePrivate::enterStates(), QStateMachinePrivate::exitStates(), QStateMachinePrivate::findErrorState(), QStateMachinePrivate::findLCA(), QStateMachinePrivate::isDescendantOf(), QStateMachinePrivate::properAncestors(), QHistoryState::setDefaultState(), and QState::setInitialState().