KModelIndexProxyMapper Class Reference

#include <kmodelindexproxymapper.h>

Inheritance diagram for KModelIndexProxyMapper:

Public Member Functions
	KModelIndexProxyMapper (const QAbstractItemModel *leftModel, const QAbstractItemModel *rightModel, QObject *parent=0)
	~KModelIndexProxyMapper ()
QModelIndex	mapLeftToRight (const QModelIndex &index) const
QModelIndex	mapRightToLeft (const QModelIndex &index) const
QItemSelection	mapSelectionLeftToRight (const QItemSelection &selection) const
QItemSelection	mapSelectionRightToLeft (const QItemSelection &selection) const
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

This class facilitates easy mapping of indexes and selections through proxy models.

In a complex system of proxy models there can be a need to map indexes and selections between them, and sometimes to do so without knowledge of the path from one model to another.

For example,

*     Root model
*         |
*       /    \
*   Proxy 1   Proxy 3
*      |       |
*   Proxy 2   Proxy 4
* 

If there is a need to map indexes between proxy 2 and proxy 4, a KModelIndexProxyMapper can be created to facilitate mapping of indexes between them.

 m_indexMapper = new KModelIndexProxyMapper(proxy2, proxy4, this);

...

 const QModelIndex proxy4Index = m_mapLeftToRight(proxy2->index(0, 0));
 Q_ASSERT(proxy4Index.model() == proxy4);

Note that the aim is to achieve black box connections so that there is no need for application code to know the structure of proxy models in the path between left and right and attempt to manually map them.

*     Root model
*         |
*   ---------------
*   |  Black Box  |
*   ---------------
*      |       |
*   Proxy 2   Proxy 4
* 

Author

Stephen Kelly steve.nosp@m.ire@.nosp@m.gmail.nosp@m..com

Definition at line 79 of file kmodelindexproxymapper.h.

Constructor & Destructor Documentation

KModelIndexProxyMapper::KModelIndexProxyMapper	(	const QAbstractItemModel *	leftModel,
		const QAbstractItemModel *	rightModel,
		QObject *	parent = 0
	)

Constructor.

Definition at line 162 of file kmodelindexproxymapper.cpp.

KModelIndexProxyMapper::~KModelIndexProxyMapper

(

)

Definition at line 168 of file kmodelindexproxymapper.cpp.

Member Function Documentation

QModelIndex KModelIndexProxyMapper::mapLeftToRight

(

const QModelIndex &

index

)

const

Maps the index from the left model to the right model.

Definition at line 173 of file kmodelindexproxymapper.cpp.

QModelIndex KModelIndexProxyMapper::mapRightToLeft

(

const QModelIndex &

index

)

const

Maps the index from the right model to the left model.

Definition at line 182 of file kmodelindexproxymapper.cpp.

QItemSelection KModelIndexProxyMapper::mapSelectionLeftToRight

(

const QItemSelection &

selection

)

const

Maps the selection from the left model to the right model.

Definition at line 213 of file kmodelindexproxymapper.cpp.

QItemSelection KModelIndexProxyMapper::mapSelectionRightToLeft

(

const QItemSelection &

selection

)

const

Maps the selection from the right model to the left model.

Definition at line 260 of file kmodelindexproxymapper.cpp.

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

• kmodelindexproxymapper.h
• kmodelindexproxymapper.cpp