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KQuickAddons
ConfigModule

#include <KQuickAddons/ConfigModule>

Inheritance diagram for KQuickAddons::ConfigModule:

Public Types
enum	Button { NoAdditionalButton = 0, Help = 1, Default = 2, Apply = 4 }

Properties
KQuickAddons::ConfigModule::Buttons	buttons

int	columnWidth

QString	description

QQuickItem	mainUi

QString	name

bool	needsAuthorization

bool	needsSave

QString	quickHelp

QString	rootOnlyMessage

bool	useRootOnlyMessage

Properties inherited from QObject
	objectName

Signals
void	authActionNameChanged ()

void	buttonsChanged ()

void	columnWidthChanged (int width)

void	needsAuthorizationChanged ()

void	needsSaveChanged ()

void	pagePushed (QQuickItem *page)

void	pageRemoved ()

void	quickHelpChanged ()

void	rootOnlyMessageChanged ()

void	useRootOnlyMessageChanged ()

Public Slots
virtual void	defaults ()

virtual void	load ()

void	pop ()

void	push (const QString &fileName, const QVariantMap &propertyMap=QVariantMap())

virtual void	save ()

Public Member Functions
	ConfigModule (const KAboutData aboutData, QObject parent=nullptr, const QVariantList &args=QVariantList())

	ConfigModule (const KPluginMetaData &metaData, QObject *parent=nullptr, const QVariantList &args=QVariantList())

	ConfigModule (QObject *parent=nullptr, const QVariantList &args=QVariantList())

	~ConfigModule ()

const KAboutData *	aboutData () const

QString	authActionName () const

Buttons	buttons () const

int	columnWidth () const

QString	description () const

QQmlEngine *	engine () const

QQuickItem *	mainUi ()

QString	name () const

bool	needsAuthorization () const

bool	needsSave ()

QString	quickHelp () const

QString	rootOnlyMessage () const

void	setAboutData (const KAboutData *about)

void	setAuthActionName (const QString &action)

void	setButtons (const Buttons btn)

void	setColumnWidth (int width)

void	setNeedsAuthorization (bool needsAuth)

void	setNeedsSave (bool needs)

void	setQuickHelp (const QString &help)

void	setRootOnlyMessage (const QString &message)

void	setUseRootOnlyMessage (bool on)

bool	useRootOnlyMessage () const

Public Member Functions inherited from QObject
	QObject (QObject *parent)

bool	blockSignals (bool block)

const QObjectList &	children () const

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

void	deleteLater ()

void	destroyed (QObject *obj)

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

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

void	dumpObjectInfo ()

void	dumpObjectTree ()

QList< QByteArray >	dynamicPropertyNames () const

virtual bool	event (QEvent *e)

virtual bool	eventFilter (QObject watched, QEvent event)

T	findChild (const QString &name, QFlags< Qt::FindChildOption > options) const

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

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

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

bool	inherits (const char *className) const

void	installEventFilter (QObject *filterObj)

bool	isWidgetType () const

bool	isWindowType () const

void	killTimer (int id)

virtual const QMetaObject *	metaObject () const

void	moveToThread (QThread *targetThread)

QString	objectName () const

void	objectNameChanged (const QString &objectName)

QObject *	parent () const

QVariant	property (const char *name) const

void	removeEventFilter (QObject *obj)

void	setObjectName (const QString &name)

void	setParent (QObject *parent)

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

bool	signalsBlocked () const

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

QThread *	thread () const

Static Public Member Functions
static ConfigModule *	qmlAttachedProperties (QObject *object)

Static Public Member Functions inherited from QObject
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 QMetaObject::Connection &connection)

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

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

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

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

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

Additional Inherited Members
Protected Member Functions inherited from QObject
virtual void	childEvent (QChildEvent *event)

virtual void	connectNotify (const QMetaMethod &signal)

virtual void	customEvent (QEvent *event)

virtual void	disconnectNotify (const QMetaMethod &signal)

bool	isSignalConnected (const QMetaMethod &signal) const

int	receivers (const char *signal) const

QObject *	sender () const

int	senderSignalIndex () const

virtual void	timerEvent (QTimerEvent *event)

Detailed Description

The base class for configuration modules.

Configuration modules are realized as plugins that are loaded only when needed.

The module in principle is a simple widget displaying the item to be changed. The module has a very small interface.

All the necessary glue logic and the GUI bells and whistles are provided by the control center and must not concern the module author.

To write a config module, you have to create a C++ library and an accompaning QML user interface. The library must contain a factory function like the following:

#include <KPluginFactory>
K_PLUGIN_FACTORY(MyConfigModuleFactory, registerPlugin<MyConfigModule>() )

The constructor of the ConfigModule then looks like this:

YourConfigModule::YourConfigModule( QObject* parent )
  : ConfigModule( parent )
{
  KAboutData *about = new KAboutData(
    <kcm name>, i18n( "..." ),
    KDE_VERSION_STRING, QString(), KAboutLicense::GPL,
    i18n( "Copyright 2006 ..." ) );
  about->addAuthor( i18n(...) );
  setAboutData( about );
  .
  .
  .
}

The QML part must be in the KPackage format, installed under share/kpackage/kcms.

See also: KPackage::Package The package must have the same name as the KAboutData componentName, to be installed by CMake with the command: kpackage_install_package(package kcm_componentName kcms) given "package" is the subdirectory in the source tree where the package sources are located, and "kcm_componentName" is the componentname passed to the KAboutData in the C++ part. The main config dialog UI will be the file ui/main.qml from the package (or what X-KPackage-MainScript value is in the package metadata desktop file).

The QML part can access all the properties of ConfigModule (together with the properties defined in its subclass) by accessing to the global object "kcm", or with the import of "org.kde.kcm 1.0" the ConfigModule attached property.

import QtQuick 2.1
import QtQuick.Controls 1.0 as QtControls
import org.kde.kcm 1.0
import org.kde.plasma.core 2.0 as PlasmaCore
Item {
    //implicitWidth and implicitHeight will be used as initial size
    //when loaded in kcmshell5
    implicitWidth: units.gridUnit * 20
    implicitHeight: units.gridUnit * 20
    ConfigModule.buttons: ConfigModule.Help|ConfigModule.Apply
    Label {
        text: kcm.needsSave
    }
}

If you want to make the ConfigModule available only conditionally (i.e. show in the list of available modules only if some test succeeds) then you can use Hidden in the .desktop file. An example:

Hidden[$e]=$(if test -e /dev/js*; then echo "false"; else echo "true"; fi)

The example executes the given code in a shell and uses the stdout output for the Hidden value (so it's either Hidden=true or Hidden=false).

See http://techbase.kde.org/Development/Tutorials/KCM_HowTo for more detailed documentation.

Definition at line 137 of file configmodule.h.

Member Enumeration Documentation

enum KQuickAddons::ConfigModule::Button

An enumeration type for the buttons used by this module.

You should only use Help, Default and Apply. The rest is obsolete. NoAdditionalButton can be used when we do not want have other button that Ok Cancel

See also: ConfigModule::buttons; ConfigModule::setButtons

Definition at line 161 of file configmodule.h.

Constructor & Destructor Documentation

KQuickAddons::ConfigModule::ConfigModule	(	const KAboutData *	aboutData,
		QObject *	parent = `nullptr`,
		const QVariantList &	args = `QVariantList()`
	)

explicit

Base class for all KControlModules.

Note: do not emit changed signals here, since they are not yet connected to any slot.

Parameters

aboutData becomes owned by the ConfigModule

Definition at line 83 of file configmodule.cpp.

KQuickAddons::ConfigModule::ConfigModule	(	const KPluginMetaData &	metaData,
		QObject *	parent = `nullptr`,
		const QVariantList &	args = `QVariantList()`
	)

explicit

Note: do not emit changed signals here, since they are not yet connected to any slot.

Parameters

metaData description for the plugin: it will generate a KAboutData from that

Since: 5.11

Definition at line 89 of file configmodule.cpp.

KQuickAddons::ConfigModule::ConfigModule	(	QObject *	parent = `nullptr`,
		const QVariantList &	args = `QVariantList()`
	)

explicit

Base class for all KControlModules.

Note: do not emit changed signals here, since they are not yet connected to any slot.

Definition at line 101 of file configmodule.cpp.

KQuickAddons::ConfigModule::~ConfigModule ( )

Destroys the module.

Definition at line 106 of file configmodule.cpp.

Member Function Documentation

const KAboutData * KQuickAddons::ConfigModule::aboutData ( ) const

This is generally only called for the KBugReport.

If you override you should have it return a pointer to a constant.

Returns: the KAboutData for this module

Definition at line 316 of file configmodule.cpp.

QString KQuickAddons::ConfigModule::authActionName ( ) const

Returns the action previously set with setAuthActionName().

By default its an invalid action.

Returns: The action that has to be authorized to execute the save() method.

Definition at line 292 of file configmodule.cpp.

void KQuickAddons::ConfigModule::authActionNameChanged ( )

signal

The auth action name has changed: this signal will relay it to the actual KCM.

Buttons KQuickAddons::ConfigModule::buttons ( ) const

Indicate which buttons will be used.

The return value is a value or'ed together from the Button enumeration type.

See also: ConfigModule::setButtons

void KQuickAddons::ConfigModule::buttonsChanged ( )

signal

Buttons to display changed.

int KQuickAddons::ConfigModule::columnWidth ( ) const

returns the width the kcm wants in column mode.

If a columnWidth is valid ( > 0 ) and less than the systemsettings' view width, more than one will be visible at once, and the first page will be a sidebar to the last page pushed. As default, this is -1 which will make the shell always show only one page at a time.

Since: 5.50

void KQuickAddons::ConfigModule::columnWidthChanged ( int width )

signal

Emitted when the wanted column width of the kcm changes.

Since: 5.50

void KQuickAddons::ConfigModule::defaults ( )

virtualslot

Sets the configuration to sensible default values.

This method is called when the user clicks the "Default" button. It should set the display to useful values.

Definition at line 312 of file configmodule.cpp.

QString KQuickAddons::ConfigModule::description ( ) const

Returns: the description of the config module

Since: 5.41

QQmlEngine * KQuickAddons::ConfigModule::engine ( ) const

the qml engine that built the main config UI

Definition at line 297 of file configmodule.cpp.

void KQuickAddons::ConfigModule::load ( )

virtualslot

Load the configuration data into the module.

The load method sets the user interface elements of the module to reflect the current settings stored in the configuration files.

This method is invoked whenever the module should read its configuration (most of the times from a config file) and update the user interface. This happens when the user clicks the "Reset" button in the control center, to undo all of his changes and restore the currently valid settings. It is also called right after construction.

Definition at line 302 of file configmodule.cpp.

QQuickItem* KQuickAddons::ConfigModule::mainUi ( )

Returns: The main UI for this configuration module. It's a QQuickItem coming from the QML package named the same as the KAboutData's component name for this config module

QString KQuickAddons::ConfigModule::name ( ) const

Returns: the name of the config module

Since: 5.41

bool KQuickAddons::ConfigModule::needsAuthorization ( ) const

Returns the value previously set with setNeedsAuthorization() or setAuthActionName().

By default it's false.

Returns: true if the module's save() method requires authorization, false otherwise

void KQuickAddons::ConfigModule::needsAuthorizationChanged ( )

signal

Emits this signal whenever the need for root authorization to save changes.

bool KQuickAddons::ConfigModule::needsSave ( )

True when the module has something changed and needs save.

void KQuickAddons::ConfigModule::needsSaveChanged ( )

signal

Indicate that the state of the modules contents has changed.

This signal is emitted whenever the state of the configuration shown in the module changes. It allows the module container to keep track of unsaved changes.

void KQuickAddons::ConfigModule::pagePushed ( QQuickItem * page )

signal

Emitted when a new sub page is pushed.

Since: 5.50

void KQuickAddons::ConfigModule::pageRemoved ( )

signal

Emitted when a sub page is popped.

Since: 5.50

void KQuickAddons::ConfigModule::pop ( )

slot

pop the last page of the KCM hyerarchy

Since: 5.50

Definition at line 205 of file configmodule.cpp.

void KQuickAddons::ConfigModule::push	(	const QString &	fileName,
		const QVariantMap &	propertyMap = `QVariantMap()`
	)

slot

Push a new sub page in the KCM hyerarchy: pages will be seen as a Kirigami PageRow.

Since: 5.50

Definition at line 181 of file configmodule.cpp.

QString KQuickAddons::ConfigModule::quickHelp ( ) const

Return a quick-help text.

This method is called when the module is docked. The quick-help text should contain a short description of the module and links to the module's help files. You can use HTML formatting tags in the text.

Note: make sure the quick help text gets translated (use i18n()).

void KQuickAddons::ConfigModule::quickHelpChanged ( )

signal

Indicate that the module's quickhelp has changed.

Emit this signal whenever the module's quickhelp changes. Modules implemented as tabbed dialogs might want to implement per-tab quickhelp for example.

QString KQuickAddons::ConfigModule::rootOnlyMessage ( ) const

Get the RootOnly message for this module.

When the module must be run as root, or acts differently for root and a normal user, it is sometimes useful to customize the message that appears at the top of the module when used as a normal user. This function returns this customized message. If none has been set, a default message will be used.

See also: ConfigModule::setRootOnlyMessage

void KQuickAddons::ConfigModule::rootOnlyMessageChanged ( )

signal

Indicate that the module's root message has changed.

Emits this signal whenever the module's root message changes.

void KQuickAddons::ConfigModule::save ( )

virtualslot

Save the configuration data.

The save method stores the config information as shown in the user interface in the config files.

If necessary, this method also updates the running system, e.g. by restarting applications. This normally does not apply for KSettings::Dialog modules where the updating is taken care of by KSettings::Dispatcher.

save is called when the user clicks "Apply" or "Ok".

Definition at line 307 of file configmodule.cpp.

void KQuickAddons::ConfigModule::setAboutData ( const KAboutData * about )

This sets the KAboutData returned by aboutData() The about data is now owned by ConfigModule.

Definition at line 321 of file configmodule.cpp.

void KQuickAddons::ConfigModule::setAuthActionName ( const QString & action )

Set if the module's save() method requires authorization to be executed.

It will still have to execute the action itself using the KAuth library, so this method is not technically needed to perform the action, but using this method will ensure that hosting applications like System Settings or kcmshell behave correctly.

Parameters

action the action that will be used by this ConfigModule

Definition at line 279 of file configmodule.cpp.

void KQuickAddons::ConfigModule::setButtons ( const Buttons btn )

Sets the buttons to display.

Help: shows a "Help" button.

Default: shows a "Use Defaults" button.

Apply: in kcontrol this will show an "Apply" and "Reset" button, in kcmshell this will show an "Ok", "Apply" and "Cancel" button.

If Apply is not specified, kcmshell will show a "Close" button.

See also: ConfigModule::buttons

Definition at line 220 of file configmodule.cpp.

void KQuickAddons::ConfigModule::setColumnWidth ( int width )

Sets the column width we want.

Since: 5.50

Definition at line 269 of file configmodule.cpp.

void KQuickAddons::ConfigModule::setNeedsAuthorization ( bool needsAuth )

Set if the module's save() method requires authorization to be executed.

The module can set this property to true if it requires authorization. It will still have to execute the action itself using the KAuth library, so this method is not technically needed to perform the action, but using this and/or the setAuthActionName() method will ensure that hosting applications like System Settings or kcmshell behave correctly.

Called with true, this method will set the action to "org.kde.kcontrol.name.save" where "name" is aboutData()->appName() return value. This default action won't be set if the aboutData() object is not valid.

Note that called with false, this method will reset the action name set with setAuthActionName().

Parameters

needsAuth Tells if the module's save() method requires authorization to be executed.

Definition at line 230 of file configmodule.cpp.

void KQuickAddons::ConfigModule::setNeedsSave ( bool needs )

Set this property to true when the user changes something in the module, signaling that a save (such as user pressing Ok or Apply) is needed.

Definition at line 376 of file configmodule.cpp.

void KQuickAddons::ConfigModule::setQuickHelp ( const QString & help )

Sets the quick help.

Definition at line 360 of file configmodule.cpp.

void KQuickAddons::ConfigModule::setRootOnlyMessage ( const QString & message )

Sets the RootOnly message.

This message will be shown at the top of the module if useRootOnlyMessage is set. If no message is set, a default one will be used.

See also: ConfigModule::rootOnlyMessage

Definition at line 329 of file configmodule.cpp.

void KQuickAddons::ConfigModule::setUseRootOnlyMessage ( bool on )

Change whether or not the RootOnly message should be shown.

Following the value of on, the RootOnly message will be shown or not.

See also: ConfigModule::useRootOnlyMessage

Definition at line 344 of file configmodule.cpp.

bool KQuickAddons::ConfigModule::useRootOnlyMessage ( ) const

Tell if KControl should show a RootOnly message when run as a normal user.

In some cases, the module don't want a RootOnly message to appear (for example if it has already one). This function tells KControl if a RootOnly message should be shown

See also: ConfigModule::setUseRootOnlyMessage

void KQuickAddons::ConfigModule::useRootOnlyMessageChanged ( )

signal

Emits this signal whenever the root only message gets used or discarded.

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

KDE's Doxygen guidelines are available online.

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Public Types

Properties

Signals

Public Slots

Public Member Functions

Static Public Member Functions

Additional Inherited Members

Detailed Description

Member Enumeration Documentation

Constructor & Destructor Documentation

Member Function Documentation