Digikam::GPSModelIndexProxyMapper Class Reference

Inheritance diagram for Digikam::GPSModelIndexProxyMapper:

Signals
void	isConnectedChanged ()

Public Member Functions
	GPSModelIndexProxyMapper (const QAbstractItemModel *const leftModel, const QAbstractItemModel *const rightModel, QObject *const parent=nullptr)
bool	isConnected () const
QModelIndex	mapLeftToRight (const QModelIndex &index) const
QModelIndex	mapRightToLeft (const QModelIndex &index) const
QItemSelection	mapSelectionLeftToRight (const QItemSelection &selection) const
QItemSelection	mapSelectionRightToLeft (const QItemSelection &selection) const
	~GPSModelIndexProxyMapper () override

Properties
bool	isConnected

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.

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

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.

The isConnected property indicates whether there is a path from the left side to the right side.

Constructor & Destructor Documentation

GPSModelIndexProxyMapper()

Digikam::GPSModelIndexProxyMapper::GPSModelIndexProxyMapper ( const QAbstractItemModel *const  leftModel, const QAbstractItemModel *const  rightModel, QObject *const  parent = nullptr  )

explicit

~GPSModelIndexProxyMapper()

Digikam::GPSModelIndexProxyMapper::~GPSModelIndexProxyMapper ( )

override

Member Function Documentation

isConnected()

bool Digikam::GPSModelIndexProxyMapper::isConnected

(

)

const

isConnectedChanged

void Digikam::GPSModelIndexProxyMapper::isConnectedChanged ( )

signal

mapLeftToRight()

QModelIndex Digikam::GPSModelIndexProxyMapper::mapLeftToRight

(

const QModelIndex &

index

)

const

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

References mapSelectionLeftToRight().

mapRightToLeft()

QModelIndex Digikam::GPSModelIndexProxyMapper::mapRightToLeft

(

const QModelIndex &

index

)

const

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

References mapSelectionRightToLeft().

mapSelectionLeftToRight()

QItemSelection Digikam::GPSModelIndexProxyMapper::mapSelectionLeftToRight

(

const QItemSelection &

selection

)

const

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

Referenced by mapLeftToRight().

mapSelectionRightToLeft()

QItemSelection Digikam::GPSModelIndexProxyMapper::mapSelectionRightToLeft

(

const QItemSelection &

selection

)

const

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

Referenced by mapRightToLeft().

Property Documentation

isConnected

bool Digikam::GPSModelIndexProxyMapper::isConnected

read

Indicates whether there is a chain that can be followed from leftModel to rightModel.

This value can change if the sourceModel of an intermediate proxy is changed.

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

• core/utilities/geolocation/geoiface/items/gpsitemsortproxymodel.h
• core/utilities/geolocation/geoiface/items/gpsitemsortproxymodel.cpp