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<?xml version="1.0" standalone="no"?>
<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.1.2//EN"
"http://www.oasis-open.org/docbook/xml/4.1.2/docbookx.dtd">
<refentry id="class-nemo-python-column-provider">
<refmeta>
<refentrytitle>Nemo.ColumnProvider</refentrytitle>
</refmeta>
<refnamediv>
<refname>Nemo.ColumnProvider</refname>
<refpurpose>Nemo.ColumnProvider Reference</refpurpose>
</refnamediv>
<!-- ******************************* -->
<!-- BEGIN OF SYNOPSIS -->
<!-- ******************************* -->
<refsect1>
<title>Synopsis</title>
<classsynopsis language="python">
<ooclass><classname>Nemo.ColumnProvider</classname></ooclass>
<methodsynopsis language="python">
<methodname><link linkend="method-nemo-column-provider--get-columns">get_columns</link></methodname>
<methodparam></methodparam>
</methodsynopsis>
</classsynopsis>
</refsect1>
<!-- ********************************** -->
<!-- BEGIN OF DESCRIPTION -->
<!-- ********************************** -->
<refsect1 id="description-column-provider">
<title>Description</title>
<para>
If subclassed, Nemo will request a list of <link linkend="class-nemo-python-column"><classname>Nemo.Column</classname></link>
objects, which are then displayed when the user is in <literal>List</literal> mode.
<note>An extension sub-classing <link linkend="class-nemo-python-column-provider"><classname>Nemo.ColumnProvider</classname></link>
will almost always want to sub-class <link linkend="class-info-provider"><classname>Nemo.InfoProvider</classname></link>
as well, since that is how an extension provides information for each item in a directory listing.
</note>
</para>
<example>
<title>Nemo.ColumnProvider Example</title>
<programlisting>
import os
import urllib
from gi.repository import Nemo, GObject
class ColumnExtension(GObject.GObject, Nemo.ColumnProvider, Nemo.InfoProvider):
def __init__(self):
pass
def get_columns(self):
return Nemo.Column(name="NemoPython::block_size_column",
attribute="block_size",
label="Block size",
description="Get the block size"),
def update_file_info(self, file):
if file.get_uri_scheme() != 'file':
return
filename = urllib.unquote(file.get_uri()[7:])
file.add_string_attribute('block_size', str(os.stat(filename).st_blksize))
</programlisting>
</example>
</refsect1>
<!-- ****************************** -->
<!-- BEGIN OF METHODS -->
<!-- ****************************** -->
<refsect1>
<title>Passive Methods</title>
<refsect2 id="method-nemo-column-provider--get-columns">
<title>Nemo.ColumnProvider.get_columns</title>
<programlisting><methodsynopsis language="python">
<methodname>get_columns</methodname>
<methodparam></methodparam>
</methodsynopsis></programlisting>
<variablelist>
<varlistentry>
<term><emphasis>Returns</emphasis> :</term>
<listitem><simpara>a list of <literal>Nemo.Column</literal></simpara></listitem>
</varlistentry>
</variablelist>
<para>
The <methodname>get_columns</methodname>() method returns a list of
<link linkend="class-nemo-python-column"><classname>Nemo.Column</classname></link>.
</para>
</refsect2>
</refsect1>
</refentry>
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