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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>NautilusInfoProvider: Nautilus Extension Reference Manual</title>
<meta name="generator" content="DocBook XSL Stylesheets V1.79.1">
<link rel="home" href="index.html" title="Nautilus Extension Reference Manual">
<link rel="up" href="ch01.html" title="Extension Interfaces">
<link rel="prev" href="NautilusFileInfo.html" title="NautilusFileInfo">
<link rel="next" href="NautilusLocationWidgetProvider.html" title="NautilusLocationWidgetProvider">
<meta name="generator" content="GTK-Doc V1.27 (XML mode)">
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</head>
<body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF">
<table class="navigation" id="top" width="100%" summary="Navigation header" cellpadding="2" cellspacing="5"><tr valign="middle">
<td width="100%" align="left" class="shortcuts">
<a href="#" class="shortcut">Top</a><span id="nav_description">  <span class="dim">|</span> 
                  <a href="#NautilusInfoProvider.description" class="shortcut">Description</a></span><span id="nav_hierarchy">  <span class="dim">|</span> 
                  <a href="#NautilusInfoProvider.object-hierarchy" class="shortcut">Object Hierarchy</a></span><span id="nav_prerequisites">  <span class="dim">|</span> 
                  <a href="#NautilusInfoProvider.prerequisites" class="shortcut">Prerequisites</a></span>
</td>
<td><a accesskey="h" href="index.html"><img src="home.png" width="16" height="16" border="0" alt="Home"></a></td>
<td><a accesskey="u" href="ch01.html"><img src="up.png" width="16" height="16" border="0" alt="Up"></a></td>
<td><a accesskey="p" href="NautilusFileInfo.html"><img src="left.png" width="16" height="16" border="0" alt="Prev"></a></td>
<td><a accesskey="n" href="NautilusLocationWidgetProvider.html"><img src="right.png" width="16" height="16" border="0" alt="Next"></a></td>
</tr></table>
<div class="refentry">
<a name="NautilusInfoProvider"></a><div class="titlepage"></div>
<div class="refnamediv"><table width="100%"><tr>
<td valign="top">
<h2><span class="refentrytitle"><a name="NautilusInfoProvider.top_of_page"></a>NautilusInfoProvider</span></h2>
<p>NautilusInfoProvider — Interface to provide additional information about files</p>
</td>
<td class="gallery_image" valign="top" align="right"></td>
</tr></table></div>
<div class="refsect1">
<a name="NautilusInfoProvider.functions"></a><h2>Functions</h2>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="functions_return">
<col class="functions_name">
</colgroup>
<tbody>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<span class="c_punctuation">(</span><a class="link" href="NautilusInfoProvider.html#NautilusInfoProviderUpdateComplete" title="NautilusInfoProviderUpdateComplete ()">*NautilusInfoProviderUpdateComplete</a><span class="c_punctuation">)</span> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="NautilusInfoProvider.html#NautilusOperationResult" title="enum NautilusOperationResult"><span class="returnvalue">NautilusOperationResult</span></a>
</td>
<td class="function_name">
<a class="link" href="NautilusInfoProvider.html#nautilus-info-provider-update-file-info" title="nautilus_info_provider_update_file_info ()">nautilus_info_provider_update_file_info</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<a class="link" href="NautilusInfoProvider.html#nautilus-info-provider-cancel-update" title="nautilus_info_provider_cancel_update ()">nautilus_info_provider_cancel_update</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<a class="link" href="NautilusInfoProvider.html#nautilus-info-provider-update-complete-invoke" title="nautilus_info_provider_update_complete_invoke ()">nautilus_info_provider_update_complete_invoke</a> <span class="c_punctuation">()</span>
</td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect1">
<a name="NautilusInfoProvider.other"></a><h2>Types and Values</h2>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="name">
<col class="description">
</colgroup>
<tbody>
<tr>
<td class="datatype_keyword"> </td>
<td class="function_name"><a class="link" href="NautilusInfoProvider.html#NautilusInfoProvider-struct" title="NautilusInfoProvider">NautilusInfoProvider</a></td>
</tr>
<tr>
<td class="datatype_keyword">struct</td>
<td class="function_name"><a class="link" href="NautilusInfoProvider.html#NautilusInfoProviderIface" title="struct NautilusInfoProviderIface">NautilusInfoProviderIface</a></td>
</tr>
<tr>
<td class="datatype_keyword"> </td>
<td class="function_name"><a class="link" href="NautilusInfoProvider.html#NautilusOperationHandle" title="NautilusOperationHandle">NautilusOperationHandle</a></td>
</tr>
<tr>
<td class="datatype_keyword">enum</td>
<td class="function_name"><a class="link" href="NautilusInfoProvider.html#NautilusOperationResult" title="enum NautilusOperationResult">NautilusOperationResult</a></td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect1">
<a name="NautilusInfoProvider.object-hierarchy"></a><h2>Object Hierarchy</h2>
<pre class="screen">    <a href="/usr/share/gtk-doc/html/gobject/gobject-Enumeration-and-Flag-Types.html">GEnum</a>
    <span class="lineart">╰──</span> NautilusOperationResult
    <a href="/usr/share/gtk-doc/html/gobject/GTypeModule.html">GInterface</a>
    <span class="lineart">╰──</span> NautilusInfoProvider
</pre>
</div>
<div class="refsect1">
<a name="NautilusInfoProvider.prerequisites"></a><h2>Prerequisites</h2>
<p>
NautilusInfoProvider requires
 <a href="../gobject/gobject-The-Base-Object-Type.html#GObject-struct">GObject</a>.</p>
</div>
<div class="refsect1">
<a name="NautilusInfoProvider.includes"></a><h2>Includes</h2>
<pre class="synopsis">#include &lt;libnautilus-extension/nautilus-column-provider.h&gt;
</pre>
</div>
<div class="refsect1">
<a name="NautilusInfoProvider.description"></a><h2>Description</h2>
<p><a class="link" href="NautilusInfoProvider.html" title="NautilusInfoProvider"><span class="type">NautilusInfoProvider</span></a> allows extension to provide additional information about
files. When <a class="link" href="NautilusInfoProvider.html#nautilus-info-provider-update-file-info" title="nautilus_info_provider_update_file_info ()"><code class="function">nautilus_info_provider_update_file_info()</code></a> is called by the application,
extensions will know that it's time to add extra information to the provided
<a class="link" href="NautilusFileInfo.html" title="NautilusFileInfo"><span class="type">NautilusFileInfo</span></a>.</p>
</div>
<div class="refsect1">
<a name="NautilusInfoProvider.functions_details"></a><h2>Functions</h2>
<div class="refsect2">
<a name="NautilusInfoProviderUpdateComplete"></a><h3>NautilusInfoProviderUpdateComplete ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
<span class="c_punctuation">(</span>*NautilusInfoProviderUpdateComplete<span class="c_punctuation">)</span> (<em class="parameter"><code><a class="link" href="NautilusInfoProvider.html" title="NautilusInfoProvider"><span class="type">NautilusInfoProvider</span></a> *provider</code></em>,
                                       <em class="parameter"><code><a class="link" href="NautilusInfoProvider.html#NautilusOperationHandle" title="NautilusOperationHandle"><span class="type">NautilusOperationHandle</span></a> *handle</code></em>,
                                       <em class="parameter"><code><a class="link" href="NautilusInfoProvider.html#NautilusOperationResult" title="enum NautilusOperationResult"><span class="type">NautilusOperationResult</span></a> result</code></em>,
                                       <em class="parameter"><code><a href="../glib/glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a> user_data</code></em>);</pre>
</div>
<hr>
<div class="refsect2">
<a name="nautilus-info-provider-update-file-info"></a><h3>nautilus_info_provider_update_file_info ()</h3>
<pre class="programlisting"><a class="link" href="NautilusInfoProvider.html#NautilusOperationResult" title="enum NautilusOperationResult"><span class="returnvalue">NautilusOperationResult</span></a>
nautilus_info_provider_update_file_info
                               (<em class="parameter"><code><a class="link" href="NautilusInfoProvider.html" title="NautilusInfoProvider"><span class="type">NautilusInfoProvider</span></a> *provider</code></em>,
                                <em class="parameter"><code><a class="link" href="NautilusFileInfo.html" title="NautilusFileInfo"><span class="type">NautilusFileInfo</span></a> *file</code></em>,
                                <em class="parameter"><code><a href="../gobject/gobject-Closures.html#GClosure"><span class="type">GClosure</span></a> *update_complete</code></em>,
                                <em class="parameter"><code><a class="link" href="NautilusInfoProvider.html#NautilusOperationHandle" title="NautilusOperationHandle"><span class="type">NautilusOperationHandle</span></a> **handle</code></em>);</pre>
</div>
<hr>
<div class="refsect2">
<a name="nautilus-info-provider-cancel-update"></a><h3>nautilus_info_provider_cancel_update ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
nautilus_info_provider_cancel_update (<em class="parameter"><code><a class="link" href="NautilusInfoProvider.html" title="NautilusInfoProvider"><span class="type">NautilusInfoProvider</span></a> *provider</code></em>,
                                      <em class="parameter"><code><a class="link" href="NautilusInfoProvider.html#NautilusOperationHandle" title="NautilusOperationHandle"><span class="type">NautilusOperationHandle</span></a> *handle</code></em>);</pre>
</div>
<hr>
<div class="refsect2">
<a name="nautilus-info-provider-update-complete-invoke"></a><h3>nautilus_info_provider_update_complete_invoke ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
nautilus_info_provider_update_complete_invoke
                               (<em class="parameter"><code><a href="../gobject/gobject-Closures.html#GClosure"><span class="type">GClosure</span></a> *update_complete</code></em>,
                                <em class="parameter"><code><a class="link" href="NautilusInfoProvider.html" title="NautilusInfoProvider"><span class="type">NautilusInfoProvider</span></a> *provider</code></em>,
                                <em class="parameter"><code><a class="link" href="NautilusInfoProvider.html#NautilusOperationHandle" title="NautilusOperationHandle"><span class="type">NautilusOperationHandle</span></a> *handle</code></em>,
                                <em class="parameter"><code><a class="link" href="NautilusInfoProvider.html#NautilusOperationResult" title="enum NautilusOperationResult"><span class="type">NautilusOperationResult</span></a> result</code></em>);</pre>
</div>
</div>
<div class="refsect1">
<a name="NautilusInfoProvider.other_details"></a><h2>Types and Values</h2>
<div class="refsect2">
<a name="NautilusInfoProvider-struct"></a><h3>NautilusInfoProvider</h3>
<pre class="programlisting">typedef struct _NautilusInfoProvider NautilusInfoProvider;</pre>
</div>
<hr>
<div class="refsect2">
<a name="NautilusInfoProviderIface"></a><h3>struct NautilusInfoProviderIface</h3>
<pre class="programlisting">struct NautilusInfoProviderIface {
	GTypeInterface g_iface;

	NautilusOperationResult (*update_file_info) (NautilusInfoProvider     *provider,
						     NautilusFileInfo         *file,
						     GClosure                 *update_complete,
						     NautilusOperationHandle **handle);
	void                    (*cancel_update)    (NautilusInfoProvider     *provider,
						     NautilusOperationHandle  *handle);
};
</pre>
<p>Interface for extensions to provide additional information about files.</p>
<div class="refsect3">
<a name="NautilusInfoProviderIface.members"></a><h4>Members</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="300px" class="struct_members_name">
<col class="struct_members_description">
<col width="200px" class="struct_members_annotations">
</colgroup>
<tbody>
<tr>
<td class="struct_member_name"><p><em class="structfield"><code><a name="NautilusInfoProviderIface.update-file-info"></a>update_file_info</code></em> ()</p></td>
<td class="struct_member_description"><p>Returns a <a class="link" href="NautilusInfoProvider.html#NautilusOperationResult" title="enum NautilusOperationResult"><span class="type">NautilusOperationResult</span></a>.
See <a class="link" href="NautilusInfoProvider.html#nautilus-info-provider-update-file-info" title="nautilus_info_provider_update_file_info ()"><code class="function">nautilus_info_provider_update_file_info()</code></a> for details.</p></td>
<td class="struct_member_annotations"> </td>
</tr>
<tr>
<td class="struct_member_name"><p><em class="structfield"><code><a name="NautilusInfoProviderIface.cancel-update"></a>cancel_update</code></em> ()</p></td>
<td class="struct_member_description"><p>Cancels a previous call to <a class="link" href="NautilusInfoProvider.html#nautilus-info-provider-update-file-info" title="nautilus_info_provider_update_file_info ()"><code class="function">nautilus_info_provider_update_file_info()</code></a>.
See <a class="link" href="NautilusInfoProvider.html#nautilus-info-provider-cancel-update" title="nautilus_info_provider_cancel_update ()"><code class="function">nautilus_info_provider_cancel_update()</code></a> for details.</p></td>
<td class="struct_member_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
</div>
<hr>
<div class="refsect2">
<a name="NautilusOperationHandle"></a><h3>NautilusOperationHandle</h3>
<pre class="programlisting">typedef struct _NautilusOperationHandle NautilusOperationHandle;</pre>
<p>Handle for asynchronous interfaces. These are opaque handles that must
be unique within an extension object. These are returned by operations
that return <a class="link" href="NautilusInfoProvider.html#NAUTILUS-OPERATION-IN-PROGRESS:CAPS"><span class="type">NAUTILUS_OPERATION_IN_PROGRESS</span></a>.</p>
</div>
<hr>
<div class="refsect2">
<a name="NautilusOperationResult"></a><h3>enum NautilusOperationResult</h3>
<p>Return values for asynchronous operations performed by the extension.
See <a class="link" href="NautilusInfoProvider.html#nautilus-info-provider-update-file-info" title="nautilus_info_provider_update_file_info ()"><code class="function">nautilus_info_provider_update_file_info()</code></a>.</p>
<div class="refsect3">
<a name="NautilusOperationResult.members"></a><h4>Members</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="300px" class="enum_members_name">
<col class="enum_members_description">
<col width="200px" class="enum_members_annotations">
</colgroup>
<tbody>
<tr>
<td class="enum_member_name"><p><a name="NAUTILUS-OPERATION-COMPLETE:CAPS"></a>NAUTILUS_OPERATION_COMPLETE</p></td>
<td class="enum_member_description">
<p>the operation succeeded, and the extension
 is done with the request.</p>
</td>
<td class="enum_member_annotations"> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="NAUTILUS-OPERATION-FAILED:CAPS"></a>NAUTILUS_OPERATION_FAILED</p></td>
<td class="enum_member_description">
<p>the operation failed.</p>
</td>
<td class="enum_member_annotations"> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="NAUTILUS-OPERATION-IN-PROGRESS:CAPS"></a>NAUTILUS_OPERATION_IN_PROGRESS</p></td>
<td class="enum_member_description">
<p>the extension has begin an async operation.
 When this value is returned, the extension must set the handle parameter
 and call the callback closure when the operation is complete.</p>
</td>
<td class="enum_member_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
</div>
</div>
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