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<title>Rhythmbox Development Reference Manual: RBRandomPlayOrder</title>
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<a href="#RBRandomPlayOrder.object-hierarchy" class="shortcut">Object Hierarchy</a></span>
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<h2><span class="refentrytitle"><a name="RBRandomPlayOrder.top_of_page"></a>RBRandomPlayOrder</span></h2>
<p>RBRandomPlayOrder — base class for weighted random play orders</p>
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<a name="RBRandomPlayOrder.other"></a><h2>Types and Values</h2>
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<td class="datatype_keyword">struct</td>
<td class="function_name"><a class="link" href="RBRandomPlayOrder.html#RBRandomPlayOrder-struct" title="struct RBRandomPlayOrder">RBRandomPlayOrder</a></td>
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<td class="datatype_keyword">struct</td>
<td class="function_name"><a class="link" href="RBRandomPlayOrder.html#RBRandomPlayOrderClass" title="struct RBRandomPlayOrderClass">RBRandomPlayOrderClass</a></td>
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<a name="RBRandomPlayOrder.object-hierarchy"></a><h2>Object Hierarchy</h2>
<pre class="screen"> <a href="http://library.gnome.org/devel/gobject/unstable/gobject-The-Base-Object-Type.html#GObject">GObject</a>
<span class="lineart">╰──</span> <a class="link" href="RBPlayOrder.html" title="RBPlayOrder">RBPlayOrder</a>
<span class="lineart">╰──</span> RBRandomPlayOrder
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<a name="RBRandomPlayOrder.description"></a><h2>Description</h2>
<p>Subclasses only need to override <code class="function">get_entry_weight()</code> to return the
right weight for a given entry.</p>
<p>This class also delays committing any changes until the user moves to the
next or previous song. So if the user changes the entry-view to contain
different songs, but changes it back before the current song finishes, they
will not see any changes to their history of played songs.</p>
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<div class="refsect1">
<a name="RBRandomPlayOrder.functions_details"></a><h2>Functions</h2>
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<div class="refsect1">
<a name="RBRandomPlayOrder.other_details"></a><h2>Types and Values</h2>
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<a name="RBRandomPlayOrder-struct"></a><h3>struct RBRandomPlayOrder</h3>
<pre class="programlisting">struct RBRandomPlayOrder;</pre>
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<div class="refsect2">
<a name="RBRandomPlayOrderClass"></a><h3>struct RBRandomPlayOrderClass</h3>
<pre class="programlisting">struct RBRandomPlayOrderClass {
RBPlayOrderClass parent_class;
/**
* get_entry_weight:
* @rorder: the play order
* @db: the #RhythmDB
* @entry: the #RhythmDBEntry to weight
*
* This method should return a weight for the given @entry.
*
* Return value: weighting for @entry
*/
double (*get_entry_weight) (RBRandomPlayOrder *rorder, RhythmDB *db, RhythmDBEntry *entry);
};
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