#include <KGame/KGamePropertyHandler>

Inheritance diagram for KGamePropertyHandler:

Signals
void	signalPropertyChanged (KGamePropertyBase *)

void	signalRequestValue (KGamePropertyBase *property, QString &value)

void	signalSendMessage (int msgid, QDataStream &, bool *sent)

Public Member Functions
	KGamePropertyHandler (QObject *parent=0)

	KGamePropertyHandler (int id, const QObject receiver, const char sendf, const char emitf, QObject parent=0)

	~KGamePropertyHandler ()

bool	addProperty (KGamePropertyBase *data, const QString &name=QString())

void	clear ()

void	Debug ()

QMultiHash< int, KGamePropertyBase * > &	dict () const

void	emitSignal (KGamePropertyBase *data)

KGamePropertyBase *	find (int id)

void	flush ()

int	id () const

virtual bool	load (QDataStream &stream)

void	lockDirectEmit ()

void	lockProperties ()

KGamePropertyBase::PropertyPolicy	policy ()

bool	processMessage (QDataStream &stream, int id, bool isSender)

QString	propertyName (int id) const

QString	propertyValue (KGamePropertyBase *property)

void	registerHandler (int id, const QObject receiver, const char send, const char *emit)

bool	removeProperty (KGamePropertyBase *data)

virtual bool	save (QDataStream &stream)

void	sendLocked (bool l)

bool	sendProperty (QDataStream &s)

void	setId (int id)

void	setPolicy (KGamePropertyBase::PropertyPolicy p, bool userspace=true)

int	uniquePropertyId ()

void	unlockDirectEmit ()

void	unlockProperties ()

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

	QObject (QObject parent, const char name)

virtual	~QObject ()

bool	blockSignals (bool block)

QObject *	child (const char objName, const char inheritsClass, bool recursiveSearch) const

const QObjectList &	children () const

const char *	className () const

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

void	deleteLater ()

void	destroyed (QObject *obj)

bool	disconnect (const QObject receiver, const char method)

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

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) const

QList< T >	findChildren (const QRegExp &regExp) const

QList< T >	findChildren (const QString &name) const

bool	inherits (const char *className) const

void	insertChild (QObject *object)

void	installEventFilter (QObject *filterObj)

bool	isA (const char *className) const

bool	isWidgetType () const

void	killTimer (int id)

virtual const QMetaObject *	metaObject () const

void	moveToThread (QThread *targetThread)

const char *	name () const

const char *	name (const char *defaultName) const

QString	objectName () const

QObject *	parent () const

QVariant	property (const char *name) const

void	removeChild (QObject *object)

void	removeEventFilter (QObject *obj)

void	setName (const char *name)

void	setObjectName (const QString &name)

void	setParent (QObject *parent)

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

bool	signalsBlocked () const

int	startTimer (int interval)

QThread *	thread () const

Additional Inherited Members
Static Public Member Functions inherited from QObject
bool	connect (const QObject sender, const char signal, const QObject receiver, const char method, Qt::ConnectionType type)

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

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

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

Protected Member Functions inherited from QObject
bool	checkConnectArgs (const char signal, const QObject object, const char *method)

virtual void	childEvent (QChildEvent *event)

virtual void	connectNotify (const char *signal)

virtual void	customEvent (QEvent *event)

virtual void	disconnectNotify (const char *signal)

int	receivers (const char *signal) const

QObject *	sender () const

int	senderSignalIndex () const

virtual void	timerEvent (QTimerEvent *event)

Static Protected Member Functions inherited from QObject
QByteArray	normalizeSignalSlot (const char *signalSlot)

Properties inherited from QObject
	objectName

Detailed Description

A collection class for KGameProperty objects.

The KGamePropertyHandler class is some kind of a collection class for KGameProperty. You usually don't have to create one yourself, as both KPlayer and KGame provide a handler. In most cases you do not even have to care about the KGamePropertHandler. KGame and KPlayer implement all features of KGamePropertyHandler so you will rather use it there.

You have to use the KGamePropertyHandler as parent for all KGameProperty objects but you can also use KPlayer or KGame as parent - then KPlayer::dataHandler or KGame::dataHandler will be used.

Every KGamePropertyHandler must have - just like every KGameProperty - a unique ID. This ID is provided either in the constructor or in registerHandler. The ID is used to assign an incoming message (e.g. a changed property) to the correct handler. Inside the handler the property ID is used to change the correct property.

The constructor or registerHandler takes 3 addittional arguments: a receiver and two slots. The first slot is connected to signalSendMessage, the second to signalPropertyChanged. You must provide these in order to use the KGamePropertyHandler.

The most important function of KGamePropertyHandler is processMessage which assigns an incoming value to the correct property.

A KGamePropertyHandler is also used - indirectly using emitSignal - to emit a signal when the value of a property changes. This is done this way because a KGameProperty does not inherit QObject because of memory advantages. Many games can have dozens or even hundreds of KGameProperty objects so every additional variable in KGameProperty would be multiplied.

Definition at line 73 of file kgamepropertyhandler.h.

Constructor & Destructor Documentation

KGamePropertyHandler::KGamePropertyHandler ( QObject * parent = 0 )

Construct an unregistered KGamePropertyHandler.

You have to call registerHandler before you can use this handler!

Definition at line 62 of file kgamepropertyhandler.cpp.

KGamePropertyHandler::KGamePropertyHandler	(	int	id,
		const QObject *	receiver,
		const char *	sendf,
		const char *	emitf,
		QObject *	parent = `0`
	)

Construct a registered handler.

See also: registerHandler

Definition at line 56 of file kgamepropertyhandler.cpp.

KGamePropertyHandler::~KGamePropertyHandler ( )

Definition at line 67 of file kgamepropertyhandler.cpp.

Member Function Documentation

bool KGamePropertyHandler::addProperty	(	KGamePropertyBase *	data,
		const QString &	name = `QString()`
	)

Adds a KGameProperty property to the handler.

Parameters

data	the property
name	A description of the property, which will be returned by propertyName. This is used for debugging

Returns: true on success

Definition at line 144 of file kgamepropertyhandler.cpp.

void KGamePropertyHandler::clear ( )

Clear the KGamePropertyHandler.

Note that the properties are not deleted so if you created your KGameProperty objects dynamically like

KGamePropertyInt* myProperty = new KGamePropertyInt(id, dataHandler());

you also have to delete it:

dataHandler()->clear();

delete myProperty;

Definition at line 329 of file kgamepropertyhandler.cpp.

void KGamePropertyHandler::Debug ( )

Writes some debug output to the console.

Definition at line 386 of file kgamepropertyhandler.cpp.

QMultiHash< int, KGamePropertyBase * > & KGamePropertyHandler::dict ( ) const

Reference to the internal dictionary.

Definition at line 348 of file kgamepropertyhandler.cpp.

void KGamePropertyHandler::emitSignal ( KGamePropertyBase * data )

called by a property to emit a signal This call is simply forwarded to the parent object

Definition at line 296 of file kgamepropertyhandler.cpp.

KGamePropertyBase * KGamePropertyHandler::find ( int id )

Parameters

id	The ID of the property. See KGamePropertyBase::id

Returns: The KGameProperty this ID is assigned to

Definition at line 322 of file kgamepropertyhandler.cpp.

void KGamePropertyHandler::flush ( )

Sends all properties which are marked dirty over the network.

This will make a forced synchornisation of the properties and mark them all not dirty.

Definition at line 262 of file kgamepropertyhandler.cpp.

int KGamePropertyHandler::id ( ) const

Returns: the id of the handler

Definition at line 75 of file kgamepropertyhandler.cpp.

bool KGamePropertyHandler::load ( QDataStream & stream )

virtual

Loads properties from the datastream.

Parameters

stream the datastream to load from

Returns: true on success otherwise false

Definition at line 181 of file kgamepropertyhandler.cpp.

void KGamePropertyHandler::lockDirectEmit ( )

Called by the KGame or KPlayer object or the handler itself to delay emmiting of signals.

Lockign keeps a counter and unlock is only achieved when every lock is canceld by an unlock. While this is set signals are quequed and only emmited after this is reset. Its deeper meaning is to prevent inconsistencies in a game load or network transfer where a emit could access a property not yet loaded or transmitted. Calling this by yourself you better know what your are doing.

Definition at line 276 of file kgamepropertyhandler.cpp.

void KGamePropertyHandler::lockProperties ( )

Calls KGamePropertyBase::setReadOnly(true) for all properties of this handler.

Use with care! This will even lock the core properties, like name, group and myTurn!!

See also: unlockProperties

Definition at line 248 of file kgamepropertyhandler.cpp.

KGamePropertyBase::PropertyPolicy KGamePropertyHandler::policy ( )

Returns the default policy for this property handler.

All properties registered newly, will have this property.

Definition at line 220 of file kgamepropertyhandler.cpp.

bool KGamePropertyHandler::processMessage	(	QDataStream &	stream,
		int	id,
		bool	isSender
	)

Main message process function.

This has to be called by the parent's message event handler. If the id of the message agrees with the id of the handler, the message is extracted and processed. Otherwise false is returned. Example:

if (mProperties.processMessage(stream,msgid,sender==gameId())) return ;

Parameters

stream	The data stream containing the message
id	the message id of the message
isSender	Whether the receiver is also the sender

Returns: true on message processed otherwise false

Definition at line 96 of file kgamepropertyhandler.cpp.

QString KGamePropertyHandler::propertyName ( int id ) const

Parameters

id	The ID of the property

Returns: A name of the property which can be used for debugging. Don't depend on this function! It it possible not to provide a name or to provide the same name for multiple properties!

Definition at line 165 of file kgamepropertyhandler.cpp.

QString KGamePropertyHandler::propertyValue ( KGamePropertyBase * property )

In several situations you just want to have a QString of a KGameProperty object.

This function will provide you with such a QString for all the types used inside of all KGame classes. If you have a non-standard property (probably a self defined class or something like this) you also need to connect to signalRequestValue to make this function useful.

Parameters

property Return the value of this KGameProperty

Returns: The value of a KGameProperty

Definition at line 353 of file kgamepropertyhandler.cpp.

void KGamePropertyHandler::registerHandler	(	int	id,
		const QObject *	receiver,
		const char *	send,
		const char *	emit
	)

Register the handler with a parent.

This is to use if the constructor without arguments has been chosen. Otherwise you need not call this.

Parameters

id	The id of the message to listen for
receiver	The object that will receive the signals of KGamePropertyHandler
send	A slot that is being connected to signalSendMessage
emit	A slot that is being connected to signalPropertyChanged

Definition at line 85 of file kgamepropertyhandler.cpp.

bool KGamePropertyHandler::removeProperty ( KGamePropertyBase * data )

Removes a property from the handler.

Parameters

data	the property

Returns: true on success

Definition at line 134 of file kgamepropertyhandler.cpp.

bool KGamePropertyHandler::save ( QDataStream & stream )

virtual

Saves properties into the datastream.

Parameters

stream the datastream to save to

Returns: true on success otherwise false

Definition at line 203 of file kgamepropertyhandler.cpp.

void KGamePropertyHandler::sendLocked ( bool l )

bool KGamePropertyHandler::sendProperty ( QDataStream & s )

called by a property to send itself into the datastream.

This call is simply forwarded to the parent object

Definition at line 315 of file kgamepropertyhandler.cpp.

void KGamePropertyHandler::setId ( int id )

Use id as new ID for this KGamePropertyHandler.

This is used internally only.

Definition at line 80 of file kgamepropertyhandler.cpp.

void KGamePropertyHandler::setPolicy	(	KGamePropertyBase::PropertyPolicy	p,
		bool	userspace = `true`
	)

Set the policy for all kgame variables which are currently registerd in the KGame proeprty handler.

See KGamePropertyBase::setPolicy

Parameters

p	is the new policy for all properties of this handler
userspace	if userspace is true (default) only user properties are changed. Otherwise the system properties are also changed.

Definition at line 225 of file kgamepropertyhandler.cpp.

void KGamePropertyHandler::signalPropertyChanged ( KGamePropertyBase * )

signal

This is emitted by a property.

KGamePropertyBase::emitSignal calls emitSignal which emits this signal.

This signal is emitted whenever the property is changed. Note that you can switch off this behaviour using KGamePropertyBase::setEmittingSignal in favor of performance. Note that you won't experience any performance loss using signals unless you use dozens or hundreds of properties which change very often.

void KGamePropertyHandler::signalRequestValue	(	KGamePropertyBase *	property,
		QString &	value
	)

signal

If you call propertyValue with a non-standard KGameProperty it is possible that the value cannot automatically be converted into a QString.

Then this signal is emitted and asks you to provide the correct value. You probably want to use something like this to achieve this:

#include <typeinfo>
void slotRequestValue(KGamePropertyBase* p, QString& value)
{
    if (*(p->typeinfo()) == typeid(MyType) {
        value = QString(((KGameProperty<MyType>*)p)->value());
    }
}

Parameters

property	The KGamePropertyBase the value is requested for
value	The value of this property. You have to set this.

void KGamePropertyHandler::signalSendMessage	(	int	msgid,
		QDataStream &	,
		bool *	sent
	)

signal

This signal is emitted when a property needs to be sent.

Only the parent has to react to this.

Parameters

msgid	The id of the handler
sent	set this to true if the property was sent successfully - otherwise don't touch

int KGamePropertyHandler::uniquePropertyId ( )

returns a unique property ID starting called usually with a base of KGamePropertyBase::IdAutomatic.

This is used internally by the property base to assign automtic id's. Not much need to call this yourself.

Definition at line 257 of file kgamepropertyhandler.cpp.

void KGamePropertyHandler::unlockDirectEmit ( )

Removes the lock from the emitting of property signals.

Corresponds to the lockIndirectEmits

Definition at line 281 of file kgamepropertyhandler.cpp.

void KGamePropertyHandler::unlockProperties ( )

Calls KGamePropertyBase::setReadOnly(false) for all properties of this player.

libkdegames/libkdegamesprivate/kgame

Signals

Public Member Functions

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation

libkdegames/libkdegamesprivate/kgame

kdegames API Reference

Search