A settings accessor implementation that wrapps QSettings. More...

#include <qsettingsaccessor.h>

Inheritance diagram for QtMvvm::QSettingsAccessor:

Public Slots
void	sync () override
	Synchronizes the settings to the disk or whatever is needed to permanently store them. More...

Public Slots inherited from QtMvvm::ISettingsAccessor
virtual void	sync ()=0
	Synchronizes the settings to the disk or whatever is needed to permanently store them. More...

Public Member Functions
Q_INVOKABLE	QSettingsAccessor (QObject *parent=nullptr)
	Default Constructor.

	QSettingsAccessor (QSettings settings, QObject parent=nullptr)
	Constructor, with settings to be used (takes ownership of the settings)

bool	contains (const QString &key) const override
	Checks if a value is stored for the given key. More...

QVariant	load (const QString &key, const QVariant &defaultValue) const override
	Loads the value for the given key from the settings. More...

void	save (const QString &key, const QVariant &value) override
	Stores the given value under the given key in the settings. More...

void	remove (const QString &key) override
	Removes the key and all its subkeys from the settings. More...

QSettings *	settings () const
	Returns the internally used settings.

Public Member Functions inherited from QtMvvm::ISettingsAccessor
	ISettingsAccessor (QObject *parent=nullptr)
	Constructor.

Public Member Functions inherited from QObject
virtual const QMetaObject *	metaObject () const const

virtual void *	qt_metacast (const char *)

virtual int	qt_metacall (QMetaObject::Call, int, void **)

	QObject (QObject *parent)

virtual bool	event (QEvent *e)

virtual bool	eventFilter (QObject watched, QEvent event)

QString	objectName () const const

void	setObjectName (const QString &name)

bool	isWidgetType () const const

bool	isWindowType () const const

bool	signalsBlocked () const const

bool	blockSignals (bool block)

QThread *	thread () const const

void	moveToThread (QThread *targetThread)

int	startTimer (int interval, Qt::TimerType timerType)

int	startTimer (std::chrono::milliseconds time, Qt::TimerType timerType)

void	killTimer (int id)

T	findChild (const QString &name, Qt::FindChildOptions options) const const

QList< T >	findChildren (const QString &name, Qt::FindChildOptions options) const const

QList< T >	findChildren (const QRegExp &regExp, Qt::FindChildOptions options) const const

QList< T >	findChildren (const QRegularExpression &re, Qt::FindChildOptions options) const const

const QObjectList &	children () const const

void	setParent (QObject *parent)

void	installEventFilter (QObject *filterObj)

void	removeEventFilter (QObject *obj)

QMetaObject::Connection	connect (const QObject sender, const char signal, const char *method, Qt::ConnectionType type) const const

bool	disconnect (const char signal, const QObject receiver, const char *method) const const

bool	disconnect (const QObject receiver, const char method) const const

void	dumpObjectTree ()

void	dumpObjectInfo ()

void	dumpObjectTree () const const

void	dumpObjectInfo () const const

bool	setProperty (const char *name, const QVariant &value)

QVariant	property (const char *name) const const

QList< QByteArray >	dynamicPropertyNames () const const

void	destroyed (QObject *obj)

void	objectNameChanged (const QString &objectName)

QObject *	parent () const const

bool	inherits (const char *className) const const

void	deleteLater ()

Additional Inherited Members
Signals inherited from QtMvvm::ISettingsAccessor
void	entryChanged (const QString &key, const QVariant &value)
	Is emitted whenever a settings value was changed, at least via this instance.

void	entryRemoved (const QString &key)
	Is emitted whenever a settings value was removed, at least via this instance.

Static Public Member Functions inherited from QtMvvm::ISettingsAccessor
template<typename T >
static void	setDefaultAccessor ()

static void	setDefaultAccessor (int typeId)

static ISettingsAccessor *	createDefaultAccessor (QObject *parent=nullptr)
	Create a new instance of the default accessor type. More...

Static Public Member Functions inherited from QObject
QString	tr (const char sourceText, const char disambiguation, int n)

QString	trUtf8 (const char sourceText, const char disambiguation, int n)

QMetaObject::Connection	connect (const QObject sender, const char signal, const QObject receiver, const char method, Qt::ConnectionType type)

QMetaObject::Connection	connect (const QObject sender, const QMetaMethod &signal, const QObject receiver, const QMetaMethod &method, Qt::ConnectionType type)

QMetaObject::Connection	connect (const QObject sender, PointerToMemberFunction signal, const QObject receiver, PointerToMemberFunction method, Qt::ConnectionType type)

QMetaObject::Connection	connect (const QObject *sender, PointerToMemberFunction signal, Functor functor)

QMetaObject::Connection	connect (const QObject sender, PointerToMemberFunction signal, const QObject context, Functor functor, Qt::ConnectionType type)

bool	disconnect (const QObject sender, const char signal, const QObject receiver, const char method)

bool	disconnect (const QObject sender, const QMetaMethod &signal, const QObject receiver, const QMetaMethod &method)

bool	disconnect (const QMetaObject::Connection &connection)

bool	disconnect (const QObject sender, PointerToMemberFunction signal, const QObject receiver, PointerToMemberFunction method)

Protected Member Functions inherited from QObject
QObject *	sender () const const

int	senderSignalIndex () const const

int	receivers (const char *signal) const const

bool	isSignalConnected (const QMetaMethod &signal) const const

virtual void	timerEvent (QTimerEvent *event)

virtual void	childEvent (QChildEvent *event)

virtual void	customEvent (QEvent *event)

virtual void	connectNotify (const QMetaMethod &signal)

virtual void	disconnectNotify (const QMetaMethod &signal)

Properties inherited from QObject
	objectName

Detailed Description

A settings accessor implementation that wrapps QSettings.

Definition at line 14 of file qsettingsaccessor.h.

Member Function Documentation

◆ contains()

bool QtMvvm::QSettingsAccessor::contains ( const QString & key ) const

overridevirtual

Checks if a value is stored for the given key.

Parameters

key	The key of the settings entry to be checked for existance

Returns: true, if a value for that key was stored, false if not

This should only check for values, not for groups, i.e. if key referes to a group that has child keys, but no value by itself, you should still return false.

See also: ISettingsAccessor::load

Implements QtMvvm::ISettingsAccessor.

◆ load()

QVariant QtMvvm::QSettingsAccessor::load	(	const QString &	key,
		const QVariant &	defaultValue
	)		const

overridevirtual

Loads the value for the given key from the settings.

Parameters

key	The key of the settings entry to be loaded
defaultValue	A alternative value to be returned if there is no data stored for that key

Returns: The data loaded for the key, or the default value

If the given value does exist, it should be loaded and returned. If the is on data stored for that key, simply return whatever is passed as the default value.

See also: Storing data, ISettingsAccessor::contains, ISettingsAccessor::save

Implements QtMvvm::ISettingsAccessor.

◆ remove()

void QtMvvm::QSettingsAccessor::remove ( const QString & key )

overridevirtual

Removes the key and all its subkeys from the settings.

Parameters

key	The key of the settings entry to be removed

This method should remove the given key and all of its subkeys. If for example the settings contained the values group/subgroup and group/subgroup/key, after this method, both must have been removed. Permanent storing is done asynchronously, but can be forced via sync().

Any implementation of this method must emit the entryRemoved() signal for all the removed entries. I.e. for the example above, it must be emitted for both, group/subgroup and group/subgroup/key.

See also: Storing data, ISettingsAccessor::entryRemoved, ISettingsAccessor::save, ISettingsAccessor::sync

Implements QtMvvm::ISettingsAccessor.

◆ save()

void QtMvvm::QSettingsAccessor::save	(	const QString &	key,
		const QVariant &	value
	)

overridevirtual

Stores the given value under the given key in the settings.

Parameters

key	The key of the settings entry to be saved
value	The data to be stored under that key

Should simply store the passed data under the given key. You dont have to check if the variant is actually serializable, as the meta system will automatically warn the user if thats not the case. Permanent storing is done asynchronously, but can be forced via sync().

Any implementation of this method must emit the entryChanged() signal with the passed data and key.

See also: Storing data, ISettingsAccessor::entryChanged, ISettingsAccessor::load, ISettingsAccessor::remove, ISettingsAccessor::sync

Implements QtMvvm::ISettingsAccessor.

◆ sync

void QtMvvm::QSettingsAccessor::sync ( )

overrideslot

Synchronizes the settings to the disk or whatever is needed to permanently store them.

You can call this method to immediatly store any changed data to permanent store. This exists because typically, calls to save() and remove() only "cache" the changes, and then later write them to the permanent store in a single transaction, as this can be an expensive operation. Normally, you don't have to care about this, as this happens automatically, but sometimes you might want to manually perform this step. Thats what this method is for.

See also: ISettingsAccessor::save, ISettingsAccessor::remove, QSettings::sync

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

qsettingsaccessor.h

Public Slots

Public Member Functions

Additional Inherited Members

Detailed Description

Member Function Documentation

◆ contains()

◆ load()

◆ remove()

◆ save()

◆ sync