'Re: [PyQt] changing model for QTree'

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List:       pykde
Subject:    Re: [PyQt] changing model for QTree
From:       Brian Kelley <kelley () eyesopen ! com>
Date:       2009-01-28 23:21:01
Message-ID: C5A6528D.70E6%kelley () eyesopen ! com
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One easy solution to your issue is to use a QSortFilterProxyModel to "wrap"=
 your model and only show the items you want visible.

>From the documentation:

QSortFilterProxyModel can be used for sorting items, filtering out items, o=
r both. The model transforms the structure of a source model by mapping the=
 model indexes it supplies to new indexes, corresponding to different locat=
ions, for views to use. This approach allows a given source model to be res=
tructured as far as views are concerned without requiring any transformatio=
ns on the underlying data, and without duplicating the data in memory.

Here is the documentation link:

http://doc.trolltech.com/4.4/qsortfilterproxymodel.html#details

There is a python example in

examples/itemview/basicsortfiltermodel.py

One word of caution, don't forget to turn the dynamicSortFilter property on=
!

Brian

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<HTML>
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<TITLE>Re: [PyQt] changing model for QTree</TITLE>
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<FONT FACE="Calibri, Verdana, Helvetica, Arial"><SPAN STYLE='font-size:11pt'>One easy \
solution to your issue is to use a QSortFilterProxyModel to &#8220;wrap&#8221; your \
model and only show the items you want visible.<BR> <BR>
> From the documentation:<BR>
<BR>
</SPAN></FONT><FONT FACE="Times, Times New Roman"><SPAN \
STYLE='font-size:12pt'>QSortFilterProxyModel can be used for sorting items, filtering \
out items, or both. The model transforms the structure of a source model by mapping \
the model indexes it supplies to new indexes, corresponding to different locations, \
for views to use. This approach allows a given source model to be restructured as far \
as views are concerned without requiring any transformations on the underlying data, \
and without duplicating the data in memory.<BR> <BR>
Here is the documentation link:<BR>
<BR>
<a href="http://doc.trolltech.com/4.4/qsortfilterproxymodel.html#details">http://doc.trolltech.com/4.4/qsortfilterproxymodel.html#details</a><BR>
 </SPAN></FONT><FONT FACE="Calibri, Verdana, Helvetica, Arial"><SPAN \
STYLE='font-size:11pt'><BR> There is a python example in <BR>
<BR>
examples/itemview/basicsortfiltermodel.py<BR>
<BR>
One word of caution, don&#8217;t forget to turn the dynamicSortFilter property \
on!<BR> <BR>
Brian<BR>
</SPAN></FONT>
</BODY>
</HTML>

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