KDE 4.5 PyKDE API Reference
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.
- Since:
- 4.5
Methods | |
| __init__ (self, QObject parent=0) | |
| bool | acceptRow (self, int sourceRow, QModelIndex sourceParent) |
| 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.
| setSourceModel | ( | self, | ||
| QAbstractItemModel | model | |||
| ) |
