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<a href="#shell-ShellAppUsage.description" class="shortcut">Description</a>
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<a name="shell-ShellAppUsage"></a><div class="titlepage"></div>
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<h2><span class="refentrytitle"><a name="shell-ShellAppUsage.top_of_page"></a>ShellAppUsage</span></h2>
<p>ShellAppUsage — Track application usage/state data</p>
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<a name="shell-ShellAppUsage.synopsis"></a><h2>Synopsis</h2>
<pre class="synopsis">struct <a class="link" href="shell-ShellAppUsage.html#ShellAppUsageClass" title="struct ShellAppUsageClass">ShellAppUsageClass</a>;
<span class="returnvalue">int</span> <a class="link" href="shell-ShellAppUsage.html#shell-app-usage-compare" title="shell_app_usage_compare ()">shell_app_usage_compare</a> (<em class="parameter"><code><span class="type">ShellAppUsage</span> *self</code></em>,
<em class="parameter"><code>const <span class="type">char</span> *context</code></em>,
<em class="parameter"><code><span class="type">ShellApp</span> *app_a</code></em>,
<em class="parameter"><code><span class="type">ShellApp</span> *app_b</code></em>);
<span class="returnvalue">ShellAppUsage</span> * <a class="link" href="shell-ShellAppUsage.html#shell-app-usage-get-default" title="shell_app_usage_get_default ()">shell_app_usage_get_default</a> (<em class="parameter"><code><span class="type">void</span></code></em>);
<span class="returnvalue">GSList</span> * <a class="link" href="shell-ShellAppUsage.html#shell-app-usage-get-most-used" title="shell_app_usage_get_most_used ()">shell_app_usage_get_most_used</a> (<em class="parameter"><code><span class="type">ShellAppUsage</span> *usage</code></em>,
<em class="parameter"><code>const <span class="type">char</span> *context</code></em>,
<em class="parameter"><code><span class="type">gint</span> max_count</code></em>);
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<a name="shell-ShellAppUsage.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.
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<a name="shell-ShellAppUsage.details"></a><h2>Details</h2>
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<a name="ShellAppUsageClass"></a><h3>struct ShellAppUsageClass</h3>
<pre class="programlisting">struct ShellAppUsageClass {
GObjectClass parent_class;
};
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<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><span class="type">ShellAppUsage</span> *self</code></em>,
<em class="parameter"><code>const <span class="type">char</span> *context</code></em>,
<em class="parameter"><code><span class="type">ShellApp</span> *app_a</code></em>,
<em class="parameter"><code><span class="type">ShellApp</span> *app_b</code></em>);</pre>
<p>
Compare <em class="parameter"><code>app_a</code></em> and <em class="parameter"><code>app_b</code></em> based on frequency of use.
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<td><p><span class="term"><em class="parameter"><code>self</code></em> :</span></p></td>
<td>the usage instance to request</td>
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<td><p><span class="term"><em class="parameter"><code>context</code></em> :</span></p></td>
<td>Activity identifier</td>
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<td><p><span class="term"><em class="parameter"><code>app_a</code></em> :</span></p></td>
<td>First app</td>
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<td><p><span class="term"><em class="parameter"><code>app_b</code></em> :</span></p></td>
<td>Second app</td>
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<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>-1 if <em class="parameter"><code>app_a</code></em> ranks higher than <em class="parameter"><code>app_b</code></em>, 1 if <em class="parameter"><code>app_b</code></em> ranks higher
than <em class="parameter"><code>app_a</code></em>, and 0 if both rank equally.</td>
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<div class="refsect2">
<a name="shell-app-usage-get-default"></a><h3>shell_app_usage_get_default ()</h3>
<pre class="programlisting"><span class="returnvalue">ShellAppUsage</span> * shell_app_usage_get_default (<em class="parameter"><code><span class="type">void</span></code></em>);</pre>
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<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>The global <span class="type">ShellAppUsage</span> instance. <span class="annotation">[<acronym title="Don't free data after the code is done."><span class="acronym">transfer none</span></acronym>]</span>
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<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><span class="type">ShellAppUsage</span> *usage</code></em>,
<em class="parameter"><code>const <span class="type">char</span> *context</code></em>,
<em class="parameter"><code><span class="type">gint</span> max_count</code></em>);</pre>
<p>
Get a list of most popular applications for a given context.
</p>
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<td><p><span class="term"><em class="parameter"><code>usage</code></em> :</span></p></td>
<td>the usage instance to request</td>
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<td><p><span class="term"><em class="parameter"><code>context</code></em> :</span></p></td>
<td>Activity identifier</td>
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<td><p><span class="term"><em class="parameter"><code>max_count</code></em> :</span></p></td>
<td>how many applications are requested. Note that the actual
list size may be less, or NULL if not enough applications are registered.</td>
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<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>List of applications. <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>
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