QUndoStackPrivate Class Reference

#include <qundostack_p.h>

Inheritance diagram for QUndoStackPrivate:

Public Functions
bool	checkUndoLimit ()
	If the number of commands on the stack exceedes the undo limit, deletes commands from the bottom of the stack. More...
	QUndoStackPrivate ()
void	setIndex (int idx, bool clean)
	Sets the current index to idx, emitting appropriate signals. More...
Public Functions inherited from QObjectPrivate
void	_q_reregisterTimers (void *pointer)
void	addConnection (int signal, Connection *c)
void	cleanConnectionLists ()
void	connectNotify (const char *signal)
void	deleteChildren ()
void	disconnectNotify (const char *signal)
bool	isSender (const QObject *receiver, const char *signal) const
bool	isSignalConnected (uint signalIdx) const
	Returns true if the signal with index signal_index from object sender is connected. More...
void	moveToThread_helper ()
	QObjectPrivate (int version=QObjectPrivateVersion)
QObjectList	receiverList (const char *signal) const
QObjectList	senderList () const
void	setParent_helper (QObject *)
void	setThreadData_helper (QThreadData *currentData, QThreadData *targetData)
int	signalIndex (const char *signalName) const
	Returns the signal index used in the internal connectionLists vector. More...
virtual	~QObjectPrivate ()
Public Functions inherited from QObjectData
virtual	~QObjectData ()=0

Public Variables
int	clean_index
QList< QUndoCommand * >	command_list
QUndoGroup *	group
int	index
QList< QUndoCommand * >	macro_stack
int	undo_limit
Public Variables inherited from QObjectPrivate
union {
QObject *   currentChildBeingDeleted
QAbstractDeclarativeData *   declarativeData
};
quint32	connectedSignals [2]
QObjectConnectionListVector *	connectionLists
Sender *	currentSender
QList< QPointer< QObject > >	eventFilters
ExtraData *	extraData
QString	objectName
Connection *	senders
QAtomicPointer< QtSharedPointer::ExternalRefCountData >	sharedRefcount
QThreadData *	threadData
void *	unused
Public Variables inherited from QObjectData
uint	blockSig: 1
QObjectList	children
uint	hasGuards: 1
uint	inEventHandler: 1
uint	inThreadChangeEvent: 1
uint	isWidget: 1
QMetaObject *	metaObject
uint	ownObjectName: 1
QObject *	parent
uint	pendTimer: 1
int	postedEvents
QObject *	q_ptr
uint	receiveChildEvents: 1
uint	sendChildEvents: 1
uint	unused: 22
uint	wasDeleted: 1

Additional Inherited Members
Public Types inherited from QObjectPrivate
typedef void(*	StaticMetaCallFunction) (QObject *, QMetaObject::Call, int, void **)
Static Public Functions inherited from QObjectPrivate
static void	clearGuards (QObject *)
static QObjectPrivate *	get (QObject *o)
static void	resetCurrentSender (QObject *receiver, Sender *currentSender, Sender *previousSender)
static Sender *	setCurrentSender (QObject *receiver, Sender *sender)
static void	signalSignature (const QMetaMethod &signal, QVarLengthArray< char > *result)

Detailed Description

Definition at line 79 of file qundostack_p.h.

Constructors and Destructors

QUndoStackPrivate()

QUndoStackPrivate::QUndoStackPrivate ( )

inline

Definition at line 83 of file qundostack_p.h.

: index(0), clean_index(0), group(0), undo_limit(0) {}

Functions

checkUndoLimit()

bool QUndoStackPrivate::checkUndoLimit

(

)

If the number of commands on the stack exceedes the undo limit, deletes commands from the bottom of the stack.

Warning

This function is not part of the public interface.

Returns true if commands were deleted.

Definition at line 484 of file qundostack.cpp.

{
    if (undo_limit <= 0 || !macro_stack.isEmpty() || undo_limit >= command_list.count())
        return false;

    int del_count = command_list.count() - undo_limit;

    for (int i = 0; i < del_count; ++i)
        delete command_list.takeFirst();

    index -= del_count;
    if (clean_index != -1) {
        if (clean_index < del_count)
            clean_index = -1; // we've deleted the clean command
        else
            clean_index -= del_count;
    }

    return true;
}

setIndex()

void QUndoStackPrivate::setIndex	(	int	idx,
		bool	clean
	)

Sets the current index to idx, emitting appropriate signals.

Warning

This function is not part of the public interface. If clean is true, makes idx the clean index as well.

Definition at line 451 of file qundostack.cpp.

{
    Q_Q(QUndoStack);

    bool was_clean = index == clean_index;

    if (idx != index) {
        index = idx;
        emit q->indexChanged(index);
        emit q->canUndoChanged(q->canUndo());
        emit q->undoTextChanged(q->undoText());
        emit q->canRedoChanged(q->canRedo());
        emit q->redoTextChanged(q->redoText());
    }

    if (clean)
        clean_index = index;

    bool is_clean = index == clean_index;
    if (is_clean != was_clean)
        emit q->cleanChanged(is_clean);
}

Properties

clean_index

int QUndoStackPrivate::clean_index

Definition at line 88 of file qundostack_p.h.

command_list

QList<QUndoCommand*> QUndoStackPrivate::command_list

Definition at line 85 of file qundostack_p.h.

group

QUndoGroup* QUndoStackPrivate::group

Definition at line 89 of file qundostack_p.h.

index

int QUndoStackPrivate::index

Definition at line 87 of file qundostack_p.h.

macro_stack

QList<QUndoCommand*> QUndoStackPrivate::macro_stack

Definition at line 86 of file qundostack_p.h.

undo_limit

int QUndoStackPrivate::undo_limit

Definition at line 90 of file qundostack_p.h.

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

• /src/gui/util/qundostack_p.h
• /src/gui/util/qundostack.cpp