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<a href="#shell-shell-app-usage.object-hierarchy" class="shortcut">Object Hierarchy</a></span>
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<a name="shell-shell-app-usage"></a><div class="titlepage"></div>
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<h2><span class="refentrytitle"><a name="shell-shell-app-usage.top_of_page"></a>shell-app-usage</span></h2>
<p>shell-app-usage — Track application usage/state data</p>
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<td class="gallery_image" valign="top" align="right"></td>
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<div class="refsect1">
<a name="shell-shell-app-usage.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>
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<td class="function_type">
<a class="link" href="shell-shell-app-usage.html#ShellAppUsage"><span class="returnvalue">ShellAppUsage</span></a> *
</td>
<td class="function_name">
<a class="link" href="shell-shell-app-usage.html#shell-app-usage-get-default" title="shell_app_usage_get_default ()">shell_app_usage_get_default</a> <span class="c_punctuation">()</span>
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<td class="function_type">
<span class="returnvalue">GSList</span> *
</td>
<td class="function_name">
<a class="link" href="shell-shell-app-usage.html#shell-app-usage-get-most-used" title="shell_app_usage_get_most_used ()">shell_app_usage_get_most_used</a> <span class="c_punctuation">()</span>
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<td class="function_type">
<span class="returnvalue">int</span>
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<td class="function_name">
<a class="link" href="shell-shell-app-usage.html#shell-app-usage-compare" title="shell_app_usage_compare ()">shell_app_usage_compare</a> <span class="c_punctuation">()</span>
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<a name="ShellAppUsage"></a><div class="refsect1">
<a name="shell-shell-app-usage.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>
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<td class="define_keyword">#define</td>
<td class="function_name"><a class="link" href="shell-shell-app-usage.html#SHELL-TYPE-APP-USAGE:CAPS" title="SHELL_TYPE_APP_USAGE">SHELL_TYPE_APP_USAGE</a></td>
</tr>
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<td class="datatype_keyword"> </td>
<td class="function_name"><a class="link" href="shell-shell-app-usage.html#ShellAppUsage-struct" title="ShellAppUsage">ShellAppUsage</a></td>
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</tbody>
</table></div>
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<div class="refsect1">
<a name="shell-shell-app-usage.object-hierarchy"></a><h2>Object Hierarchy</h2>
<pre class="screen"> GObject
<span class="lineart">╰──</span> ShellAppUsage
</pre>
</div>
<div class="refsect1">
<a name="shell-shell-app-usage.description"></a><h2>Description</h2>
<p>This class maintains some usage and state statistics for
applications by keeping track of the approximate time an application's
windows are focused, as well as the last workspace it was seen on.
This time tracking is implemented by watching for focus notifications,
and computing a time delta between them. Also we watch the
GNOME Session "StatusChanged" signal which by default is emitted after 5
minutes to signify idle.</p>
</div>
<div class="refsect1">
<a name="shell-shell-app-usage.functions_details"></a><h2>Functions</h2>
<div class="refsect2">
<a name="shell-app-usage-get-default"></a><h3>shell_app_usage_get_default ()</h3>
<pre class="programlisting"><a class="link" href="shell-shell-app-usage.html#ShellAppUsage"><span class="returnvalue">ShellAppUsage</span></a> *
shell_app_usage_get_default (<em class="parameter"><code><span class="type">void</span></code></em>);</pre>
<div class="refsect3">
<a name="shell-app-usage-get-default.returns"></a><h4>Returns</h4>
<p> The global <a class="link" href="shell-shell-app-usage.html#ShellAppUsage"><span class="type">ShellAppUsage</span></a> instance. </p>
<p><span class="annotation">[<acronym title="Don't free data after the code is done."><span class="acronym">transfer none</span></acronym>]</span></p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="shell-app-usage-get-most-used"></a><h3>shell_app_usage_get_most_used ()</h3>
<pre class="programlisting"><span class="returnvalue">GSList</span> *
shell_app_usage_get_most_used (<em class="parameter"><code><a class="link" href="shell-shell-app-usage.html#ShellAppUsage"><span class="type">ShellAppUsage</span></a> *usage</code></em>,
<em class="parameter"><code>const <span class="type">char</span> *context</code></em>);</pre>
<p>Get a list of most popular applications for a given context.</p>
<div class="refsect3">
<a name="shell-app-usage-get-most-used.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
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<td class="parameter_name"><p>usage</p></td>
<td class="parameter_description"><p>the usage instance to request</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>context</p></td>
<td class="parameter_description"><p>Activity identifier</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
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<div class="refsect3">
<a name="shell-app-usage-get-most-used.returns"></a><h4>Returns</h4>
<p> List of applications. </p>
<p><span class="annotation">[<acronym title="Generics and defining elements of containers and arrays."><span class="acronym">element-type</span></acronym> ShellApp][<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>]</span></p>
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<hr>
<div class="refsect2">
<a name="shell-app-usage-compare"></a><h3>shell_app_usage_compare ()</h3>
<pre class="programlisting"><span class="returnvalue">int</span>
shell_app_usage_compare (<em class="parameter"><code><a class="link" href="shell-shell-app-usage.html#ShellAppUsage"><span class="type">ShellAppUsage</span></a> *self</code></em>,
<em class="parameter"><code>const <span class="type">char</span> *context</code></em>,
<em class="parameter"><code>const <span class="type">char</span> *id_a</code></em>,
<em class="parameter"><code>const <span class="type">char</span> *id_b</code></em>);</pre>
<p>Compare <em class="parameter"><code>id_a</code></em>
and <em class="parameter"><code>id_b</code></em>
based on frequency of use.</p>
<div class="refsect3">
<a name="shell-app-usage-compare.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>self</p></td>
<td class="parameter_description"><p>the usage instance to request</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>context</p></td>
<td class="parameter_description"><p>Activity identifier</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>id_a</p></td>
<td class="parameter_description"><p>ID of first app</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>id_b</p></td>
<td class="parameter_description"><p>ID of second app</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="shell-app-usage-compare.returns"></a><h4>Returns</h4>
<p> -1 if <em class="parameter"><code>id_a</code></em>
ranks higher than <em class="parameter"><code>id_b</code></em>
, 1 if <em class="parameter"><code>id_b</code></em>
ranks higher
than <em class="parameter"><code>id_a</code></em>
, and 0 if both rank equally.</p>
</div>
</div>
</div>
<div class="refsect1">
<a name="shell-shell-app-usage.other_details"></a><h2>Types and Values</h2>
<div class="refsect2">
<a name="SHELL-TYPE-APP-USAGE:CAPS"></a><h3>SHELL_TYPE_APP_USAGE</h3>
<pre class="programlisting">#define SHELL_TYPE_APP_USAGE (shell_app_usage_get_type ())
</pre>
</div>
<hr>
<div class="refsect2">
<a name="ShellAppUsage-struct"></a><h3>ShellAppUsage</h3>
<pre class="programlisting">typedef struct _ShellAppUsage ShellAppUsage;</pre>
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