KRecursiveFilterProxyModel Class Reference

from PyKDE4.kdeui import *

Inherits: QSortFilterProxyModel → QAbstractProxyModel → QAbstractItemModel → QObject

Detailed Description

Implements recursive filtering of models

QSortFilterProxyModel does not recurse when invoking a filtering stage, so that if a particular row is filtered out, its children are not even checked to see if they match the filter.

For example, given a source model:

@verbatim - A - B - - C - - - D - - - - E - - - F - - G - - H - I @endverbatim

If a QSortFilterProxyModel is used with a filter matching A, D, G and I, the QSortFilterProxyModel will contain

@verbatim - A - I @endverbatim

That is, even though D and E match the filter, they are not represented in the proxy model because B does not match the filter and is filtered out.

The KRecursiveFilterProxyModel checks child indexes for filter matching and ensures that all matching indexes are represented in the model.

In the above example, the KRecursiveFilterProxyModel will contain

@verbatim - A - B - - C - - - D - - G - I @endverbatim

That is, the leaves in the model match the filter, but not necessarily the inner branches.

QSortFilterProxyModel provides the virtual method filterAcceptsRow to allow custom filter implementations. Custom filter implementations can be written for KRecuriveFilterProxyModel using the acceptRow virtual method.

Note that using this proxy model is additional overhead compared to QSortFilterProxyModel as every index in the model must be visited and queried.

Author:: Stephen Kelly <steveire@gmail.com>

Since:: 4.5

Methods
	__init__ (self, QObject parent=0)
bool	acceptRow (self, int sourceRow, QModelIndex sourceParent)
[QModelIndex]	match (self, QModelIndex start, int role, QVariant value, int hits=1, Qt::MatchFlags flags=Qt.MatchFlags(Qt.MatchStartsWith\|Qt.MatchWrap))
	setSourceModel (self, QAbstractItemModel model)

Method Documentation

__init__	(	self,
		QObject	parent=0
	)

Constructor

bool acceptRow	(	self,
		int	sourceRow,
		QModelIndex	sourceParent
	)

Reimplement this method for custom filtering strategies.

[QModelIndex] match	(	self,
		QModelIndex	start,
		int	role,
		QVariant	value,
		int	hits=1,
		Qt::MatchFlags	flags=Qt.MatchFlags(Qt.MatchStartsWith\|Qt.MatchWrap)
	)

@reimplemented

setSourceModel	(	self,
		QAbstractItemModel	model
	)

KRecursiveFilterProxyModel Class Reference

Detailed Description

Methods

Method Documentation

Modules