KCoreConfigSkeleton Class Reference

from PyKDE4.kdecore import *

Inherits: QObject

Detailed Description

\class KCoreConfigSkeleton kcoreconfigskeleton.h <KCoreConfigSkeleton>

Class for handling preferences settings for an application.

Author:: Cornelius Schumacher

See also:: KConfigSkeletonItem

This class provides an interface to preferences settings. Preferences items can be registered by the addItem() function corresponding to the data type of the setting. KCoreConfigSkeleton then handles reading and writing of config files and setting of default values.

Normally you will subclass KCoreConfigSkeleton, add data members for the preferences settings and register the members in the constructor of the subclass.

Example:

 class MyPrefs : public KCoreConfigSkeleton
 {
   public:
     MyPrefs()
     {
       setCurrentGroup("MyGroup");
       addItemBool("MySetting1", mMyBool, false);
       addItemPoint("MySetting2", mMyPoint, QPoint(100, 200));

       setCurrentGroup("MyOtherGroup");
       addItemDouble("MySetting3", mMyDouble, 3.14);
     }

     bool mMyBool;
     QPoint mMyPoint;
     double mMyDouble;
 }

It might be convenient in many cases to make this subclass of KCoreConfigSkeleton a singleton for global access from all over the application without passing references to the KCoreConfigSkeleton object around.

You can write the data to the configuration file by calling writeConfig() and read the data from the configuration file by calling readConfig(). If you want to watch for config changes, use configChanged() signal.

If you have items, which are not covered by the existing addItem() functions you can add customized code for reading, writing and default setting by implementing the functions usrUseDefaults(), usrReadConfig() and usrWriteConfig().

Internally preferences settings are stored in instances of subclasses of KConfigSkeletonItem. You can also add KConfigSkeletonItem subclasses for your own types and call the generic addItem() to register them.

In many cases you don't have to write the specific KCoreConfigSkeleton subclasses yourself, but you can use kconfig_compiler to automatically generate the C++ code from an XML description of the configuration options.

Use KConfigSkeleton if you need GUI types as well.

Signals
	configChanged ()
Methods
	__init__ (self, QString configname=QString(), QObject parent=0)
	__init__ (self, KSharedPtr config, QObject parent=0)
	addItem (self, KConfigSkeletonItem a0, QString name=QString())
KCoreConfigSkeleton.ItemBool	addItemBool (self, QString name, bool reference, bool defaultValue=0, QString key=QString())
KCoreConfigSkeleton.ItemDateTime	addItemDateTime (self, QString name, QDateTime reference, QDateTime defaultValue=QDateTime(), QString key=QString())
KCoreConfigSkeleton.ItemDouble	addItemDouble (self, QString name, float reference, float defaultValue=0.0, QString key=QString())
KCoreConfigSkeleton.ItemInt	addItemInt (self, QString name, int reference, int defaultValue=0, QString key=QString())
KCoreConfigSkeleton.ItemLongLong	addItemInt64 (self, QString name, long reference, long defaultValue=0, QString key=QString())
KCoreConfigSkeleton.ItemIntList	addItemIntList (self, QString name, [int] reference, [int] defaultValue=QList(), QString key=QString())
KCoreConfigSkeleton.ItemLongLong	addItemLongLong (self, QString name, long reference, long defaultValue=0, QString key=QString())
KCoreConfigSkeleton.ItemPassword	addItemPassword (self, QString name, QString reference, QString defaultValue=QLatin1String(""), QString key=QString())
KCoreConfigSkeleton.ItemPath	addItemPath (self, QString name, QString reference, QString defaultValue=QLatin1String(""), QString key=QString())
KCoreConfigSkeleton.ItemPoint	addItemPoint (self, QString name, QPoint reference, QPoint defaultValue=QPoint(), QString key=QString())
KCoreConfigSkeleton.ItemProperty	addItemProperty (self, QString name, QVariant reference, QVariant defaultValue=QVariant(), QString key=QString())
KCoreConfigSkeleton.ItemRect	addItemRect (self, QString name, QRect reference, QRect defaultValue=QRect(), QString key=QString())
KCoreConfigSkeleton.ItemSize	addItemSize (self, QString name, QSize reference, QSize defaultValue=QSize(), QString key=QString())
KCoreConfigSkeleton.ItemString	addItemString (self, QString name, QString reference, QString defaultValue=QLatin1String(""), QString key=QString())
KCoreConfigSkeleton.ItemStringList	addItemStringList (self, QString name, QStringList reference, QStringList defaultValue=QStringList(), QString key=QString())
KCoreConfigSkeleton.ItemUInt	addItemUInt (self, QString name, long reference, long defaultValue=0, QString key=QString())
KCoreConfigSkeleton.ItemULongLong	addItemUInt64 (self, QString name, long reference, long defaultValue=0, QString key=QString())
KCoreConfigSkeleton.ItemULongLong	addItemULongLong (self, QString name, long reference, long defaultValue=0, QString key=QString())
KConfig	config (self)
QString	currentGroup (self)
KConfigSkeletonItem	findItem (self, QString name)
bool	isImmutable (self, QString name)
[KConfigSkeletonItem]	items (self)
	readConfig (self)
	setCurrentGroup (self, QString group)
	setDefaults (self)
	setSharedConfig (self, KSharedPtr pConfig)
bool	useDefaults (self, bool b)
	usrReadConfig (self)
	usrSetDefaults (self)
bool	usrUseDefaults (self, bool b)
	usrWriteConfig (self)
	writeConfig (self)

Signal Documentation

configChanged ( )

This signal is emitted when the configuration change.

Signal syntax:: QObject.connect(source, SIGNAL("configChanged()"), target_slot)

Method Documentation

__init__	(	self,
		QString	configname=QString(),
		QObject	parent=0
	)

Constructor.

Parameters:

	configname	name of config file. If no name is given, the default config file as returned by KGlobal.config() is used
	parent	the parent object (see QObject documentation)

__init__	(	self,
		KSharedPtr	config,
		QObject	parent=0
	)

Constructor.

Parameters:

	config	configuration object to use
	parent	the parent object (see QObject documentation)

addItem	(	self,
		KConfigSkeletonItem	a0,
		QString	name=QString()
	)

If the name parameter is null, take the name from KConfigSkeletonItem.key(). Note that all names must be unique but that multiple entries can have the same key if they reside in different groups.

KCoreConfigSkeleton takes ownership of the KConfigSkeletonItem.

KCoreConfigSkeleton.ItemBool addItemBool	(	self,
		QString	name,
		bool	reference,
		bool	defaultValue=0,
		QString	key=QString()
	)

Parameters:

	name	Name used to identify this setting. Names must be unique.
	reference	Pointer to the variable, which is set by readConfig() calls and read by writeConfig() calls.
	defaultValue	Default value, which is used when the config file does not yet contain the key of this item.
	key	Key used in config file. If key is null, name is used as key.

Returns:: The created item

KCoreConfigSkeleton.ItemDateTime addItemDateTime	(	self,
		QString	name,
		QDateTime	reference,
		QDateTime	defaultValue=QDateTime(),
		QString	key=QString()
	)

Parameters:

	name	Name used to identify this setting. Names must be unique.
	reference	Pointer to the variable, which is set by readConfig() calls and read by writeConfig() calls.
	defaultValue	Default value, which is used when the config file does not yet contain the key of this item.
	key	Key used in config file. If key is null, name is used as key.

Returns:: The created item

KCoreConfigSkeleton.ItemDouble addItemDouble	(	self,
		QString	name,
		float	reference,
		float	defaultValue=0.0,
		QString	key=QString()
	)

Parameters:

	name	Name used to identify this setting. Names must be unique.
	reference	Pointer to the variable, which is set by readConfig() calls and read by writeConfig() calls.
	defaultValue	Default value, which is used when the config file does not yet contain the key of this item.
	key	Key used in config file. If key is null, name is used as key.

Returns:: The created item

KCoreConfigSkeleton.ItemInt addItemInt	(	self,
		QString	name,
		int	reference,
		int	defaultValue=0,
		QString	key=QString()
	)

Parameters:

	name	Name used to identify this setting. Names must be unique.
	reference	Pointer to the variable, which is set by readConfig() calls and read by writeConfig() calls.
	defaultValue	Default value, which is used when the config file does not yet contain the key of this item.
	key	Key used in config file. If key is null, name is used as key.

Returns:: The created item

KCoreConfigSkeleton.ItemLongLong addItemInt64	(	self,
		QString	name,
		long	reference,
		long	defaultValue=0,
		QString	key=QString()
	)

Deprecated:: Use addItemLongLong().

KCoreConfigSkeleton.ItemIntList addItemIntList	(	self,
		QString	name,
		[int]	reference,
		[int]	defaultValue=QList(),
		QString	key=QString()
	)

Parameters:

	name	Name used to identify this setting. Names must be unique.
	reference	Pointer to the variable, which is set by readConfig() calls and read by writeConfig() calls.
	defaultValue	Default value, which is used when the config file does not yet contain the key of this item.
	key	Key used in config file. If key is null, name is used as key.

Returns:: The created item

KCoreConfigSkeleton.ItemLongLong addItemLongLong	(	self,
		QString	name,
		long	reference,
		long	defaultValue=0,
		QString	key=QString()
	)

Parameters:

	name	Name used to identify this setting. Names must be unique.
	reference	Pointer to the variable, which is set by readConfig() calls and read by writeConfig() calls.
	defaultValue	Default value, which is used when the config file does not yet contain the key of this item.
	key	Key used in config file. If key is null, name is used as key.

Returns:: The created item

KCoreConfigSkeleton.ItemPassword addItemPassword	(	self,
		QString	name,
		QString	reference,
		QString	defaultValue=QLatin1String(""),
		QString	key=QString()
	)

Register a password item of type QString. The string value is written encrypted to the config file. Note that the current encryption scheme is very weak.

Parameters:

	name	Name used to identify this setting. Names must be unique.
	reference	Pointer to the variable, which is set by readConfig() calls and read by writeConfig() calls.
	defaultValue	Default value, which is used when the config file does not yet contain the key of this item.
	key	Key used in config file. If key is null, name is used as key.

Returns:: The created item

KCoreConfigSkeleton.ItemPath addItemPath	(	self,
		QString	name,
		QString	reference,
		QString	defaultValue=QLatin1String(""),
		QString	key=QString()
	)

Register a path item of type QString. The string value is interpreted as a path. This means, dollar expension is activated for this value, so that e.g. $HOME gets expanded.

Parameters:

	name	Name used to identify this setting. Names must be unique.
	reference	Pointer to the variable, which is set by readConfig() calls and read by writeConfig() calls.
	defaultValue	Default value, which is used when the config file does not yet contain the key of this item.
	key	Key used in config file. If key is null, name is used as key.

Returns:: The created item

KCoreConfigSkeleton.ItemPoint addItemPoint	(	self,
		QString	name,
		QPoint	reference,
		QPoint	defaultValue=QPoint(),
		QString	key=QString()
	)

Parameters:

	name	Name used to identify this setting. Names must be unique.
	reference	Pointer to the variable, which is set by readConfig() calls and read by writeConfig() calls.
	defaultValue	Default value, which is used when the config file does not yet contain the key of this item.
	key	Key used in config file. If key is null, name is used as key.

Returns:: The created item

KCoreConfigSkeleton.ItemProperty addItemProperty	(	self,
		QString	name,
		QVariant	reference,
		QVariant	defaultValue=QVariant(),
		QString	key=QString()
	)

Register a property item of type QVariant. Note that only the following QVariant types are allowed: String, StringList, Font, Point, Rect, Size, Color, Int, UInt, Bool, Double, DateTime and Date.

Parameters:

	name	Name used to identify this setting. Names must be unique.
	reference	Pointer to the variable, which is set by readConfig() calls and read by writeConfig() calls.
	defaultValue	Default value, which is used when the config file does not yet contain the key of this item.
	key	Key used in config file. If key is null, name is used as key.

Returns:: The created item

KCoreConfigSkeleton.ItemRect addItemRect	(	self,
		QString	name,
		QRect	reference,
		QRect	defaultValue=QRect(),
		QString	key=QString()
	)

Parameters:

	name	Name used to identify this setting. Names must be unique.
	reference	Pointer to the variable, which is set by readConfig() calls and read by writeConfig() calls.
	defaultValue	Default value, which is used when the config file does not yet contain the key of this item.
	key	Key used in config file. If key is null, name is used as key.

Returns:: The created item

KCoreConfigSkeleton.ItemSize addItemSize	(	self,
		QString	name,
		QSize	reference,
		QSize	defaultValue=QSize(),
		QString	key=QString()
	)

Parameters:

	name	Name used to identify this setting. Names must be unique.
	reference	Pointer to the variable, which is set by readConfig() calls and read by writeConfig() calls.
	defaultValue	Default value, which is used when the config file does not yet contain the key of this item.
	key	Key used in config file. If key is null, name is used as key.

Returns:: The created item

KCoreConfigSkeleton.ItemString addItemString	(	self,
		QString	name,
		QString	reference,
		QString	defaultValue=QLatin1String(""),
		QString	key=QString()
	)

Parameters:

	name	Name used to identify this setting. Names must be unique.
	reference	Pointer to the variable, which is set by readConfig() calls and read by writeConfig() calls.
	defaultValue	Default value, which is used when the config file does not yet contain the key of this item.
	key	Key used in config file. If key is null, name is used as key.

Returns:: The created item

KCoreConfigSkeleton.ItemStringList addItemStringList	(	self,
		QString	name,
		QStringList	reference,
		QStringList	defaultValue=QStringList(),
		QString	key=QString()
	)

Parameters:

	name	Name used to identify this setting. Names must be unique.
	reference	Pointer to the variable, which is set by readConfig() calls and read by writeConfig() calls.
	defaultValue	Default value, which is used when the config file does not yet contain the key of this item.
	key	Key used in config file. If key is null, name is used as key.

Returns:: The created item

KCoreConfigSkeleton.ItemUInt addItemUInt	(	self,
		QString	name,
		long	reference,
		long	defaultValue=0,
		QString	key=QString()
	)

Parameters:

	name	Name used to identify this setting. Names must be unique.
	reference	Pointer to the variable, which is set by readConfig() calls and read by writeConfig() calls.
	defaultValue	Default value, which is used when the config file does not yet contain the key of this item.
	key	Key used in config file. If key is null, name is used as key.

Returns:: The created item

KCoreConfigSkeleton.ItemULongLong addItemUInt64	(	self,
		QString	name,
		long	reference,
		long	defaultValue=0,
		QString	key=QString()
	)

Deprecated:: Use addItemULongLong().

KCoreConfigSkeleton.ItemULongLong addItemULongLong	(	self,
		QString	name,
		long	reference,
		long	defaultValue=0,
		QString	key=QString()
	)

Parameters:

	name	Name used to identify this setting. Names must be unique.
	reference	Pointer to the variable, which is set by readConfig() calls and read by writeConfig() calls.
	defaultValue	Default value, which is used when the config file does not yet contain the key of this item.
	key	Key used in config file. If key is null, name is used as key.

Returns:: The created item

KConfig config ( self )

Return the KConfig object used for reading and writing the settings.

QString currentGroup ( self )

Returns the current group used for addItem() calls.

KConfigSkeletonItem findItem	(	self,
		QString	name
	)

Lookup item by name

Since:: 4.4

bool isImmutable	(	self,
		QString	name
	)

Return whether a certain item is immutable

Since:: 4.4

[KConfigSkeletonItem] items ( self )

Return list of items managed by this KCoreConfigSkeleton object.

readConfig ( self )

Read preferences from config file. All registered items are set to the values read from disk. This method calls usrReadConfig() after reading the settings of the registered items from the KConfig. You can overridde usrReadConfig() in derived classes if you have special requirements. If you need more fine-grained control of storing the settings from the registered items you can override readConfig() in a derived class.

setCurrentGroup	(	self,
		QString	group
	)

Set the config file group for subsequent addItem() calls. It is valid until setCurrentGroup() is called with a new argument. Call this before you add any items. The default value is "No Group".

setDefaults ( self )

Set all registered items to their default values. This method calls usrSetDefaults() after setting the defaults for the registered items. You can overridde usrSetDefaults() in derived classes if you have special requirements. If you need more fine-grained control of setting the default values of the registered items you can override setDefaults() in a derived class.

setSharedConfig	(	self,
		KSharedPtr	pConfig
	)

Set the KSharedConfig object used for reading and writing the settings.

bool useDefaults	(	self,
		bool	b
	)

Specify whether this object should reflect the actual values or the default values. This method is implemented by usrUseDefaults(), which can be overridden in derived classes if you have special requirements and can call usrUseDefaults() directly. If you don't have control whether useDefaults() or usrUseDefaults() is called override useDefaults() directly.

Parameters:

true to make this object reflect the default values, false to make it reflect the actual values.

Returns:: The state prior to this call

usrReadConfig ( self )

Perform the actual reading of the configuration file. Override in derived classes to read special config values. Called from readConfig()

usrSetDefaults ( self )

Perform the actual setting of default values. Override in derived classes to set special default values. Called from setDefaults()

bool usrUseDefaults	(	self,
		bool	b
	)

Implemented by subclasses that use special defaults. It replaces the default values with the actual values and vice versa. Called from useDefaults()

Parameters:

true to make this object reflect the default values, false to make it reflect the actual values.

Returns:: The state prior to this call

usrWriteConfig ( self )

Perform the actual writing of the configuration file. Override in derived classes to write special config values. Called from writeConfig()

writeConfig ( self )

Write preferences to config file. The values of all registered items are written to disk. This method calls usrWriteConfig() after writing the settings from the registered items to the KConfig. You can overridde usrWriteConfig() in derived classes if you have special requirements. If you need more fine-grained control of storing the settings from the registered items you can override writeConfig() in a derived class.

KCoreConfigSkeleton Class Reference

Detailed Description

Signals

Methods

Signal Documentation

Method Documentation

Modules