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KModelIndexProxyMapper Class Reference

#include <kmodelindexproxymapper.h>

Inheritance diagram for KModelIndexProxyMapper:
Inheritance graph
[legend]

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.


The documentation for this class was generated from the following files:
  • kmodelindexproxymapper.h
  • kmodelindexproxymapper.cpp
This file is part of the KDE documentation.
Documentation copyright © 1996-2020 The KDE developers.
Generated on Mon Jun 22 2020 13:24:02 by doxygen 1.8.7 written by Dimitri van Heesch, © 1997-2006

KDE's Doxygen guidelines are available online.

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