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<title>KRecursiveFilterProxyModel</title>
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KDE 4.9 PyKDE API Reference
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<h1>KRecursiveFilterProxyModel Class Reference</h1>
<code>from PyKDE4.kdeui import *</code>
<p>
Inherits: QSortFilterProxyModel → QAbstractProxyModel → QAbstractItemModel → QObject<br />
<h2>Detailed Description</h2>
<p>Implements recursive filtering of models
</p>
<p>
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.
</p>
<p>
For example, given a source model:
</p>
<p>
@verbatim
- A
- B
- - C
- - - D
- - - - E
- - - F
- - G
- - H
- I
@endverbatim
</p>
<p>
If a QSortFilterProxyModel is used with a filter matching A, D, G and I, the QSortFilterProxyModel will contain
</p>
<p>
@verbatim
- A
- I
@endverbatim
</p>
<p>
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.
</p>
<p>
The KRecursiveFilterProxyModel checks child indexes for filter matching and ensures that all matching indexes
are represented in the model.
</p>
<p>
In the above example, the KRecursiveFilterProxyModel will contain
</p>
<p>
@verbatim
- A
- B
- - C
- - - D
- - G
- I
@endverbatim
</p>
<p>
That is, the leaves in the model match the filter, but not necessarily the inner branches.
</p>
<p>
QSortFilterProxyModel provides the virtual method filterAcceptsRow to allow custom filter implementations.
Custom filter implementations can be written for KRecuriveFilterProxyModel using the acceptRow virtual method.
</p>
<p>
Note that using this proxy model is additional overhead compared to QSortFilterProxyModel as every index in the
model must be visited and queried.
</p>
<p>
<dl class="author" compact><dt><b>Author:</b></dt><dd> Stephen Kelly <steveire@gmail.com> </dd></dl>
</p>
<p>
<dl class="since" compact><dt><b>Since:</b></dt><dd> 4.5
</dd></dl>
</p>
<table border="0" cellpadding="0" cellspacing="0"><tr><td colspan="2"><br><h2>Methods</h2></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="#KRecursiveFilterProxyModel">__init__</a> (self, QObject parent=0)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">bool </td><td class="memItemRight" valign="bottom"><a class="el" href="#acceptRow">acceptRow</a> (self, int sourceRow, QModelIndex sourceParent)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">[QModelIndex] </td><td class="memItemRight" valign="bottom"><a class="el" href="#match">match</a> (self, QModelIndex start, int role, QVariant value, int hits=1, <a href="http://www.riverbankcomputing.co.uk/static/Docs/PyQt4/html/qt.html">Qt::MatchFlags</a> flags=Qt.MatchFlags(Qt.MatchStartsWith|Qt.MatchWrap))</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="#setSourceModel">setSourceModel</a> (self, QAbstractItemModel model)</td></tr>
</table>
<hr><h2>Method Documentation</h2><a class="anchor" name="KRecursiveFilterProxyModel"></a>
<div class="memitem">
<div class="memproto">
<table class="memname"><tr>
<td class="memname">__init__</td>
<td>(</td>
<td class="paramtype"> <em>self</em>, </td>
<td class="paramname"></td>
</tr><tr>
<td class="memname"></td>
<td></td>
<td class="paramtype">QObject </td>
<td class="paramname"><em>parent=0</em></td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td>
<td></td>
<td width="100%"> </td>
</tr></table>
</div>
<div class="memdoc"><p>Constructor
</p></div></div><a class="anchor" name="acceptRow"></a>
<div class="memitem">
<div class="memproto">
<table class="memname"><tr>
<td class="memname">bool acceptRow</td>
<td>(</td>
<td class="paramtype"> <em>self</em>, </td>
<td class="paramname"></td>
</tr><tr>
<td class="memname"></td>
<td></td>
<td class="paramtype">int </td>
<td class="paramname"><em>sourceRow</em>, </td>
</tr>
<tr>
<td class="memname"></td>
<td></td>
<td class="paramtype">QModelIndex </td>
<td class="paramname"><em>sourceParent</em></td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td>
<td></td>
<td width="100%"> </td>
</tr></table>
</div>
<div class="memdoc"><p>Reimplement this method for custom filtering strategies.
</p></div></div><a class="anchor" name="match"></a>
<div class="memitem">
<div class="memproto">
<table class="memname"><tr>
<td class="memname">[QModelIndex] match</td>
<td>(</td>
<td class="paramtype"> <em>self</em>, </td>
<td class="paramname"></td>
</tr><tr>
<td class="memname"></td>
<td></td>
<td class="paramtype">QModelIndex </td>
<td class="paramname"><em>start</em>, </td>
</tr>
<tr>
<td class="memname"></td>
<td></td>
<td class="paramtype">int </td>
<td class="paramname"><em>role</em>, </td>
</tr>
<tr>
<td class="memname"></td>
<td></td>
<td class="paramtype">QVariant </td>
<td class="paramname"><em>value</em>, </td>
</tr>
<tr>
<td class="memname"></td>
<td></td>
<td class="paramtype">int </td>
<td class="paramname"><em>hits=1</em>, </td>
</tr>
<tr>
<td class="memname"></td>
<td></td>
<td class="paramtype"><a href="http://www.riverbankcomputing.co.uk/static/Docs/PyQt4/html/qt.html">Qt::MatchFlags</a> </td>
<td class="paramname"><em>flags=Qt.MatchFlags(Qt.MatchStartsWith|Qt.MatchWrap)</em></td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td>
<td></td>
<td width="100%"> </td>
</tr></table>
</div>
<div class="memdoc"><p>@reimplemented
</p></div></div><a class="anchor" name="setSourceModel"></a>
<div class="memitem">
<div class="memproto">
<table class="memname"><tr>
<td class="memname"> setSourceModel</td>
<td>(</td>
<td class="paramtype"> <em>self</em>, </td>
<td class="paramname"></td>
</tr><tr>
<td class="memname"></td>
<td></td>
<td class="paramtype">QAbstractItemModel </td>
<td class="paramname"><em>model</em></td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td>
<td></td>
<td width="100%"> </td>
</tr></table>
</div>
<div class="memdoc"><p>
</p></div></div>
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