#include <KDChartDatasetProxyModel.h>

Inheritance diagram for KDChart::DatasetProxyModel:

Public Slots
void	resetDatasetDescriptions ()

void	setDatasetColumnDescriptionVector (const DatasetDescriptionVector &columnConfig)

void	setDatasetDescriptionVectors (const DatasetDescriptionVector &rowConfig, const DatasetDescriptionVector &columnConfig)

void	setDatasetRowDescriptionVector (const DatasetDescriptionVector &rowConfig)

Public Member Functions
	DatasetProxyModel (QObject *parent=nullptr)

QModelIndex	buddy (const QModelIndex &index) const override

QVariant	data (const QModelIndex &index, int role) const override

Qt::ItemFlags	flags (const QModelIndex &index) const override

QVariant	headerData (int section, Qt::Orientation orientation, int role=Qt::DisplayRole) const override

QModelIndex	index (int row, int column, const QModelIndex &parent=QModelIndex()) const override

QModelIndex	mapFromSource (const QModelIndex &sourceIndex) const override

QModelIndex	mapToSource (const QModelIndex &proxyIndex) const override

QModelIndex	parent (const QModelIndex &child) const override

bool	setData (const QModelIndex &index, const QVariant &value, int role) override

void	setSourceModel (QAbstractItemModel *sourceModel) override

void	setSourceRootIndex (const QModelIndex &rootIdx)

Protected Member Functions
bool	filterAcceptsColumn (int sourceColumn, const QModelIndex &) const override

bool	filterAcceptsRow (int source_row, const QModelIndex &source_parent) const override

Detailed Description

DatasetProxyModel takes a KDChart dataset configuration and translates it into a filtering proxy model.

The resulting model will only contain the part of the model that is selected by the dataset, and the according row and column header data.

Currently, this model is implemented for table models only. The way it would work with models representing a tree is to be decided.

The column selection is configured by passing a dataset description vector to the model. This vector (of integers) is supposed to have one value for each column of the original model. If the value at position x is -1, column x of the original model is not included in the dataset. If it is between 0 and (columnCount() -1), it is the column the source column is mapped to in the resulting model. Any other value is an error.

Definition at line 43 of file KDChartDatasetProxyModel.h.

Constructor & Destructor Documentation

◆ DatasetProxyModel()

DatasetProxyModel::DatasetProxyModel ( QObject * parent = nullptr )

explicit

Create a DatasetProxyModel. Without further configuration, this model is invalid.

See also: setDatasetDescriptionVector

Definition at line 19 of file KDChartDatasetProxyModel.cpp.

Member Function Documentation

◆ buddy()

QModelIndex DatasetProxyModel::buddy ( const QModelIndex & index ) const

override

Definition at line 24 of file KDChartDatasetProxyModel.cpp.

References index().

◆ data()

QVariant DatasetProxyModel::data	(	const QModelIndex &	index,
		int	role
	)		const

override

Overloaded from base class.

Definition at line 195 of file KDChartDatasetProxyModel.cpp.

References index(), and mapToSource().

◆ filterAcceptsColumn()

bool DatasetProxyModel::filterAcceptsColumn	(	int	sourceColumn,
		const QModelIndex &
	)		const

overrideprotected

Decide whether the column is accepted.

Definition at line 128 of file KDChartDatasetProxyModel.cpp.

◆ filterAcceptsRow()

bool DatasetProxyModel::filterAcceptsRow	(	int	source_row,
		const QModelIndex &	source_parent
	)		const

overrideprotected

Decide whether the row is accepted.

Definition at line 110 of file KDChartDatasetProxyModel.cpp.

◆ flags()

Qt::ItemFlags DatasetProxyModel::flags ( const QModelIndex & index ) const

override

Definition at line 29 of file KDChartDatasetProxyModel.cpp.

References index(), and mapToSource().

◆ headerData()

QVariant DatasetProxyModel::headerData	(	int	section,
		Qt::Orientation	orientation,
		int	role = `Qt::DisplayRole`
	)		const

override

Overloaded from base class.

Definition at line 205 of file KDChartDatasetProxyModel.cpp.

◆ index()

QModelIndex DatasetProxyModel::index	(	int	row,
		int	column,
		const QModelIndex &	parent = `QModelIndex()`
	)		const

override

Definition at line 62 of file KDChartDatasetProxyModel.cpp.

References mapFromSource(), and parent().

Referenced by buddy(), data(), flags(), and setData().

◆ mapFromSource()

QModelIndex DatasetProxyModel::mapFromSource ( const QModelIndex & sourceIndex ) const

override

Implements the mapping from the source to the proxy indexes.

Definition at line 76 of file KDChartDatasetProxyModel.cpp.

Referenced by index(), and parent().

◆ mapToSource()

QModelIndex DatasetProxyModel::mapToSource ( const QModelIndex & proxyIndex ) const

override

Implements the mapping from the proxy to the source indexes.

Definition at line 94 of file KDChartDatasetProxyModel.cpp.

Referenced by data(), flags(), parent(), and setData().

◆ parent()

QModelIndex DatasetProxyModel::parent ( const QModelIndex & child ) const

override

Definition at line 70 of file KDChartDatasetProxyModel.cpp.

References mapFromSource(), and mapToSource().

Referenced by index().

◆ resetDatasetDescriptions

void DatasetProxyModel::resetDatasetDescriptions ( )

slot

Reset all dataset description. After that, the result of the proxying is an empty model (a new dataset description needs to be set to achieve a non-empty result).

Definition at line 186 of file KDChartDatasetProxyModel.cpp.

Referenced by setSourceModel(), and setSourceRootIndex().