CacheProxyModel Class Reference

Caches any data read access to the source model, returning an older copy if the source model is invalidated. More...

#include <cache_proxy_model.h>

Inheritance diagram for CacheProxyModel:

Public Member Functions
	CacheProxyModel (QObject *parent=0)
	Constructs a new CacheProxyModel.
QVariant	data (const QModelIndex &index, int role=Qt::DisplayRole) const override
	Retrieves data from the model for the given index and role.
Qt::ItemFlags	flags (const QModelIndex &index) const override
	Retrieves the item flags for the given index.
QVariant	headerData (int section, Qt::Orientation orientation, int role=Qt::DisplayRole) const override
	Retrieves the header data for a given section, orientation, and role.
int	rowCount (const QModelIndex &parent=QModelIndex()) const override
	Returns the number of rows under the given parent.
int	columnCount (const QModelIndex &parent=QModelIndex()) const override
	Returns the number of columns under the given parent.
void	setSourceModel (QAbstractItemModel *newSourceModel) override
	Sets a new source model to be cached and proxied.

Detailed Description

Caches any data read access to the source model, returning an older copy if the source model is invalidated.

Only flat data is supported at the moment, tree models (with parents) are unsupported.

Constructor & Destructor Documentation

CacheProxyModel()

CacheProxyModel::CacheProxyModel

(

QObject *

parent = 0

)

Constructs a new CacheProxyModel.

Parameters

parent

The parent QObject, defaults to 0.

Member Function Documentation

columnCount()

int CacheProxyModel::columnCount ( const QModelIndex & parent = QModelIndex() ) const

override

Returns the number of columns under the given parent.

Parameters

parent

The parent model index (defaults to an invalid QModelIndex).

Returns

The number of columns in the model or cache.

data()

QVariant CacheProxyModel::data ( const QModelIndex & index, int role = Qt::DisplayRole ) const

override

Retrieves data from the model for the given index and role.

Parameters

index	The model index to retrieve data for.
role	The role for which the data is requested (defaults to Qt::DisplayRole).

Returns

The data associated with the index and role, returning cached data if the source is invalid.

flags()

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

override

Retrieves the item flags for the given index.

Parameters

index

The model index to query.

Returns

The item flags for the specified index.

headerData()

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

override

Retrieves the header data for a given section, orientation, and role.

Parameters

section	The section (column or row) to retrieve data for.
orientation	The orientation of the header.
role	The role for which the data is requested (defaults to Qt::DisplayRole).

Returns

The header data for the specified parameters.

rowCount()

int CacheProxyModel::rowCount ( const QModelIndex & parent = QModelIndex() ) const

override

Returns the number of rows under the given parent.

Parameters

parent

The parent model index (defaults to an invalid QModelIndex).

Returns

The number of rows in the model or cache.

setSourceModel()

void CacheProxyModel::setSourceModel ( QAbstractItemModel * newSourceModel )

override

Sets a new source model to be cached and proxied.

Parameters

newSourceModel

A pointer to the new source model.

Sets the source model from which data must be pulled. If newSourceModel is NULL, then the cache will be used.

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

• /builds/wireshark/wireshark/ui/qt/models/cache_proxy_model.h
• /builds/wireshark/wireshark/ui/qt/models/cache_proxy_model.cpp