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|
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<tr><td colspan="5" class="shortcuts"><nobr><a href="#RBPlayOrder.synopsis" class="shortcut">Top</a>
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<a href="#RBPlayOrder.description" class="shortcut">Description</a>
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<a href="#RBPlayOrder.object-hierarchy" class="shortcut">Object Hierarchy</a>
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<a href="#RBPlayOrder.properties" class="shortcut">Properties</a>
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<a href="#RBPlayOrder.signals" class="shortcut">Signals</a></nobr></td></tr>
</table>
<div class="refentry" lang="en">
<a name="RBPlayOrder"></a><div class="titlepage"></div>
<div class="refnamediv"><table width="100%"><tr>
<td valign="top">
<h2><span class="refentrytitle"><a name="RBPlayOrder.top_of_page"></a>rb-play-order</span></h2>
<p>rb-play-order — base class for play order implementations</p>
</td>
<td valign="top" align="right"></td>
</tr></table></div>
<div class="refsynopsisdiv">
<a name="RBPlayOrder.synopsis"></a><h2>Synopsis</h2>
<pre class="synopsis">
<a class="link" href="RBPlayOrder.html#RBPlayOrder-struct" title="RBPlayOrder">RBPlayOrder</a>;
<a class="link" href="RBPlayOrder.html#RBPlayOrderClass" title="RBPlayOrderClass">RBPlayOrderClass</a>;
void <a class="link" href="RBPlayOrder.html#rb-play-order-playing-source-changed" title="rb_play_order_playing_source_changed ()">rb_play_order_playing_source_changed</a>
(<a class="link" href="RBPlayOrder.html" title="rb-play-order">RBPlayOrder</a> *porder,
<a class="link" href="RBSource.html" title="RBSource">RBSource</a> *source);
void <a class="link" href="RBPlayOrder.html#rb-play-order-query-model-changed" title="rb_play_order_query_model_changed ()">rb_play_order_query_model_changed</a> (<a class="link" href="RBPlayOrder.html" title="rb-play-order">RBPlayOrder</a> *porder);
<a
href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"
>gboolean</a> <a class="link" href="RBPlayOrder.html#rb-play-order-has-next" title="rb_play_order_has_next ()">rb_play_order_has_next</a> (<a class="link" href="RBPlayOrder.html" title="rb-play-order">RBPlayOrder</a> *porder);
<a class="link" href="RhythmDB.html#RhythmDBEntry" title="RhythmDBEntry">RhythmDBEntry</a>* <a class="link" href="RBPlayOrder.html#rb-play-order-get-next" title="rb_play_order_get_next ()">rb_play_order_get_next</a> (<a class="link" href="RBPlayOrder.html" title="rb-play-order">RBPlayOrder</a> *porder);
void <a class="link" href="RBPlayOrder.html#rb-play-order-go-next" title="rb_play_order_go_next ()">rb_play_order_go_next</a> (<a class="link" href="RBPlayOrder.html" title="rb-play-order">RBPlayOrder</a> *porder);
<a
href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"
>gboolean</a> <a class="link" href="RBPlayOrder.html#rb-play-order-has-previous" title="rb_play_order_has_previous ()">rb_play_order_has_previous</a> (<a class="link" href="RBPlayOrder.html" title="rb-play-order">RBPlayOrder</a> *porder);
<a class="link" href="RhythmDB.html#RhythmDBEntry" title="RhythmDBEntry">RhythmDBEntry</a>* <a class="link" href="RBPlayOrder.html#rb-play-order-get-previous" title="rb_play_order_get_previous ()">rb_play_order_get_previous</a> (<a class="link" href="RBPlayOrder.html" title="rb-play-order">RBPlayOrder</a> *porder);
void <a class="link" href="RBPlayOrder.html#rb-play-order-go-previous" title="rb_play_order_go_previous ()">rb_play_order_go_previous</a> (<a class="link" href="RBPlayOrder.html" title="rb-play-order">RBPlayOrder</a> *porder);
void <a class="link" href="RBPlayOrder.html#rb-play-order-set-playing-entry" title="rb_play_order_set_playing_entry ()">rb_play_order_set_playing_entry</a> (<a class="link" href="RBPlayOrder.html" title="rb-play-order">RBPlayOrder</a> *porder,
<a class="link" href="RhythmDB.html#RhythmDBEntry" title="RhythmDBEntry">RhythmDBEntry</a> *entry);
<a class="link" href="RhythmDB.html#RhythmDBEntry" title="RhythmDBEntry">RhythmDBEntry</a>* <a class="link" href="RBPlayOrder.html#rb-play-order-get-playing-entry" title="rb_play_order_get_playing_entry ()">rb_play_order_get_playing_entry</a> (<a class="link" href="RBPlayOrder.html" title="rb-play-order">RBPlayOrder</a> *porder);
<a class="link" href="RBShellPlayer.html" title="rb-shell-player">RBShellPlayer</a>* <a class="link" href="RBPlayOrder.html#rb-play-order-get-player" title="rb_play_order_get_player ()">rb_play_order_get_player</a> (<a class="link" href="RBPlayOrder.html" title="rb-play-order">RBPlayOrder</a> *porder);
<a class="link" href="RBSource.html" title="RBSource">RBSource</a>* <a class="link" href="RBPlayOrder.html#rb-play-order-get-source" title="rb_play_order_get_source ()">rb_play_order_get_source</a> (<a class="link" href="RBPlayOrder.html" title="rb-play-order">RBPlayOrder</a> *porder);
<a class="link" href="RhythmDB.html" title="rhythmdb">RhythmDB</a>* <a class="link" href="RBPlayOrder.html#rb-play-order-get-db" title="rb_play_order_get_db ()">rb_play_order_get_db</a> (<a class="link" href="RBPlayOrder.html" title="rb-play-order">RBPlayOrder</a> *porder);
RhythmDBQueryModel* <a class="link" href="RBPlayOrder.html#rb-play-order-get-query-model" title="rb_play_order_get_query_model ()">rb_play_order_get_query_model</a> (<a class="link" href="RBPlayOrder.html" title="rb-play-order">RBPlayOrder</a> *porder);
<a
href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"
>gboolean</a> <a class="link" href="RBPlayOrder.html#rb-play-order-model-not-empty" title="rb_play_order_model_not_empty ()">rb_play_order_model_not_empty</a> (<a class="link" href="RBPlayOrder.html" title="rb-play-order">RBPlayOrder</a> *porder);
</pre>
</div>
<div class="refsect1" lang="en">
<a name="RBPlayOrder.object-hierarchy"></a><h2>Object Hierarchy</h2>
<pre class="synopsis">
<a
href="/usr/share/gtk-doc/html/gobject/gobject-The-Base-Object-Type.html#GObject"
>GObject</a>
+----RBPlayOrder
+----<a class="link" href="RBRandomPlayOrder.html" title="rb-play-order-random">RBRandomPlayOrder</a>
</pre>
</div>
<div class="refsect1" lang="en">
<a name="RBPlayOrder.properties"></a><h2>Properties</h2>
<pre class="synopsis">
"<a class="link" href="RBPlayOrder.html#RBPlayOrder--player" title='The "player" property'>player</a>" <a class="link" href="RBShellPlayer.html" title="rb-shell-player">RBShellPlayer</a>* : Read / Write / Construct Only
"<a class="link" href="RBPlayOrder.html#RBPlayOrder--playing-entry" title='The "playing-entry" property'>playing-entry</a>" <a class="link" href="RhythmDB.html#RhythmDBEntry" title="RhythmDBEntry">RhythmDBEntry</a>* : Read / Write
</pre>
</div>
<div class="refsect1" lang="en">
<a name="RBPlayOrder.signals"></a><h2>Signals</h2>
<pre class="synopsis">
"<a class="link" href="RBPlayOrder.html#RBPlayOrder-have-next-previous-changed" title='The "have-next-previous-changed" signal'>have-next-previous-changed</a>" : Run Last
</pre>
</div>
<div class="refsect1" lang="en">
<a name="RBPlayOrder.description"></a><h2>Description</h2>
<p>
A play order defines an ordering of the entries from a <span class="type">RhythmDBQueryModel</span> that
the <a class="link" href="RBShellPlayer.html" title="rb-shell-player"><span class="type">RBShellPlayer</span></a> uses to get the next or previous entry to play.
</p>
<p>
Play order methods are invoked when changes are made to the query model, when
the query model is replaced, the playing source is changed, or a new playing
entry is selected.
</p>
<p>
The play order must implement methods to check for, retrieve, and move to the
next and previous entries in the play order. Only the go_next and go_previous
methods actually change anything.
</p>
<p>
The play order should also emit the have-next-previous-changed signal to hint that
the availability of either a next or previous entry in the order may have changed.
This information is used to update the sensitivity of the next and previous buttons.</p>
<p>
</p>
</div>
<div class="refsect1" lang="en">
<a name="RBPlayOrder.details"></a><h2>Details</h2>
<div class="refsect2" lang="en">
<a name="RBPlayOrder-struct"></a><h3>RBPlayOrder</h3>
<pre class="programlisting">typedef struct _RBPlayOrder RBPlayOrder;</pre>
<p>
</p>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="RBPlayOrderClass"></a><h3>RBPlayOrderClass</h3>
<pre class="programlisting">typedef struct {
GObjectClass parent_class;
/* EVENTS */
void (*playing_source_changed) (RBPlayOrder *porder);
void (*db_changed) (RBPlayOrder *porder, RhythmDB *new_db);
void (*playing_entry_changed) (RBPlayOrder *porder, RhythmDBEntry *old_entry, RhythmDBEntry *new_entry);
void (*entry_added) (RBPlayOrder *porder, RhythmDBEntry *entry);
void (*entry_removed) (RBPlayOrder *porder, RhythmDBEntry *entry);
void (*query_model_changed) (RBPlayOrder *porder);
void (*db_entry_deleted) (RBPlayOrder *porder, RhythmDBEntry *entry);
void (*playing_entry_removed) (RBPlayOrder *porder, RhythmDBEntry *entry);
/* QUERIES */
/*
* Returns whether there is a next song. This controls the next
* button's sensitivity. If not implemented, defaults to
* get_next()!=NULL.
*
* Must not change any visible state.
*/
gboolean (*has_next) (RBPlayOrder* porder);
/*
* get_next() must return the next song to play. It's called when a
* song finishes, when the user clicks the next button, and when the
* user clicks play after playback is stopped.
*
* get_next() is also used to find the first song. You can figure out
* whether the player is currently playing by calling
* rb_play_order_player_is_playing(porder).
*
* Must not change any visible state.
*/
RhythmDBEntry* (*get_next) (RBPlayOrder* porder);
/*
* Tells the play order that the user has moved to the next song.
* Should be called before the EntryView::playing-entry property is
* changed.
*/
void (*go_next) (RBPlayOrder* porder);
/*
* Returns whether there is a previous song. This controls the previous
* button's sensitivity. If not implemented, defaults to
* get_previous()!=NULL.
*
* Must not change any visible state.
*/
gboolean (*has_previous) (RBPlayOrder* porder);
/*
* get_previous() must return the previous song to play. It's called
* when the user clicks the previous button within 2 seconds of the
* beginning of a song.
*
* Must not change any visible state.
*/
RhythmDBEntry* (*get_previous) (RBPlayOrder* porder);
/*
* Tells the play order that the user has moved to the previous song.
* Should be called before the EntryView::playing-entry property is
* changed.
*/
void (*go_previous) (RBPlayOrder* porder);
/* SIGNALS */
void (*have_next_previous_changed) (RBPlayOrder *porder, gboolean have_next, gboolean have_previous);
} RBPlayOrderClass;
</pre>
<p>
</p>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="rb-play-order-playing-source-changed"></a><h3>rb_play_order_playing_source_changed ()</h3>
<pre class="programlisting">void rb_play_order_playing_source_changed
(<a class="link" href="RBPlayOrder.html" title="rb-play-order">RBPlayOrder</a> *porder,
<a class="link" href="RBSource.html" title="RBSource">RBSource</a> *source);</pre>
<p>
Sets the playing <a class="link" href="RBSource.html" title="RBSource"><span class="type">RBSource</span></a> for the play order. Should be called
by <a class="link" href="RBShellPlayer.html" title="rb-shell-player"><span class="type">RBShellPlayer</span></a> when the active source changes. Subclasses
should implement <code class="function">playing_source_changed()</code> to make any necessary
changes.</p>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>porder</code></em> :</span></p></td>
<td> <a class="link" href="RBPlayOrder.html" title="rb-play-order"><span class="type">RBPlayOrder</span></a> instance
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>source</code></em> :</span></p></td>
<td> New playing <a class="link" href="RBSource.html" title="RBSource"><span class="type">RBSource</span></a>
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="rb-play-order-query-model-changed"></a><h3>rb_play_order_query_model_changed ()</h3>
<pre class="programlisting">void rb_play_order_query_model_changed (<a class="link" href="RBPlayOrder.html" title="rb-play-order">RBPlayOrder</a> *porder);</pre>
<p>
Updates the <span class="type">RhythmDBQueryModel</span> instance for the play order.
Called from the <a class="link" href="RBSource.html" title="RBSource"><span class="type">RBSource</span></a> notify signal handler, and also from
<span class="type">rb_play_order_source_changed</span>. Subclasses should implement
<code class="function">query_model_changed()</code> to make any necessary adjustments if they
store any state based on the contents of the <span class="type">RhythmDBQueryModel</span>.</p>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody><tr>
<td><p><span class="term"><em class="parameter"><code>porder</code></em> :</span></p></td>
<td> RBPlayOrder instance
</td>
</tr></tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="rb-play-order-has-next"></a><h3>rb_play_order_has_next ()</h3>
<pre class="programlisting"><a
href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"
>gboolean</a> rb_play_order_has_next (<a class="link" href="RBPlayOrder.html" title="rb-play-order">RBPlayOrder</a> *porder);</pre>
<p>
If there is no current playing entry, returns true if the play order is non-empty.</p>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>porder</code></em> :</span></p></td>
<td> RBPlayOrder instance.
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td> true if there is an entry after the current playing entry in the play order.
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="rb-play-order-get-next"></a><h3>rb_play_order_get_next ()</h3>
<pre class="programlisting"><a class="link" href="RhythmDB.html#RhythmDBEntry" title="RhythmDBEntry">RhythmDBEntry</a>* rb_play_order_get_next (<a class="link" href="RBPlayOrder.html" title="rb-play-order">RBPlayOrder</a> *porder);</pre>
<p>
</p>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>porder</code></em> :</span></p></td>
<td> RBPlayOrder instance
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td> the next entry in the play order, or the first if not currently playing.
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="rb-play-order-go-next"></a><h3>rb_play_order_go_next ()</h3>
<pre class="programlisting">void rb_play_order_go_next (<a class="link" href="RBPlayOrder.html" title="rb-play-order">RBPlayOrder</a> *porder);</pre>
<p>
Moves to the next entry in the play order. If not currently playing, sets the
first entry in the play order as the playing entry.</p>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody><tr>
<td><p><span class="term"><em class="parameter"><code>porder</code></em> :</span></p></td>
<td> RBPlayOrder instance
</td>
</tr></tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="rb-play-order-has-previous"></a><h3>rb_play_order_has_previous ()</h3>
<pre class="programlisting"><a
href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"
>gboolean</a> rb_play_order_has_previous (<a class="link" href="RBPlayOrder.html" title="rb-play-order">RBPlayOrder</a> *porder);</pre>
<p>
</p>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>porder</code></em> :</span></p></td>
<td> RBPlayOrder instance
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td> true if there is an entry before the current entry in the play order.
If not currently playing, returns false.
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="rb-play-order-get-previous"></a><h3>rb_play_order_get_previous ()</h3>
<pre class="programlisting"><a class="link" href="RhythmDB.html#RhythmDBEntry" title="RhythmDBEntry">RhythmDBEntry</a>* rb_play_order_get_previous (<a class="link" href="RBPlayOrder.html" title="rb-play-order">RBPlayOrder</a> *porder);</pre>
<p>
</p>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>porder</code></em> :</span></p></td>
<td> RBPlayOrder instance
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td> the previous entry in the play order, or NULL if not currently playing.
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="rb-play-order-go-previous"></a><h3>rb_play_order_go_previous ()</h3>
<pre class="programlisting">void rb_play_order_go_previous (<a class="link" href="RBPlayOrder.html" title="rb-play-order">RBPlayOrder</a> *porder);</pre>
<p>
Moves to the previous entry in the play order. If not currently playing, does nothing.</p>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody><tr>
<td><p><span class="term"><em class="parameter"><code>porder</code></em> :</span></p></td>
<td> RBPlayOrder instance
</td>
</tr></tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="rb-play-order-set-playing-entry"></a><h3>rb_play_order_set_playing_entry ()</h3>
<pre class="programlisting">void rb_play_order_set_playing_entry (<a class="link" href="RBPlayOrder.html" title="rb-play-order">RBPlayOrder</a> *porder,
<a class="link" href="RhythmDB.html#RhythmDBEntry" title="RhythmDBEntry">RhythmDBEntry</a> *entry);</pre>
<p>
Sets the playing entry in the play order.</p>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>porder</code></em> :</span></p></td>
<td> <a class="link" href="RBPlayOrder.html" title="rb-play-order"><span class="type">RBPlayOrder</span></a> instance
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>entry</code></em> :</span></p></td>
<td> The new playing entry (or NULL for none)
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="rb-play-order-get-playing-entry"></a><h3>rb_play_order_get_playing_entry ()</h3>
<pre class="programlisting"><a class="link" href="RhythmDB.html#RhythmDBEntry" title="RhythmDBEntry">RhythmDBEntry</a>* rb_play_order_get_playing_entry (<a class="link" href="RBPlayOrder.html" title="rb-play-order">RBPlayOrder</a> *porder);</pre>
<p>
</p>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>porder</code></em> :</span></p></td>
<td> <a class="link" href="RBPlayOrder.html" title="rb-play-order"><span class="type">RBPlayOrder</span></a> instance
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td> the current playing entry in the play order.
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="rb-play-order-get-player"></a><h3>rb_play_order_get_player ()</h3>
<pre class="programlisting"><a class="link" href="RBShellPlayer.html" title="rb-shell-player">RBShellPlayer</a>* rb_play_order_get_player (<a class="link" href="RBPlayOrder.html" title="rb-play-order">RBPlayOrder</a> *porder);</pre>
<p>
Only for use by <a class="link" href="RBPlayOrder.html" title="rb-play-order"><span class="type">RBPlayOrder</span></a> subclasses.</p>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>porder</code></em> :</span></p></td>
<td> <a class="link" href="RBPlayOrder.html" title="rb-play-order"><span class="type">RBPlayOrder</span></a> instance
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td> <a class="link" href="RBShellPlayer.html" title="rb-shell-player"><span class="type">RBShellPlayer</span></a> instance
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="rb-play-order-get-source"></a><h3>rb_play_order_get_source ()</h3>
<pre class="programlisting"><a class="link" href="RBSource.html" title="RBSource">RBSource</a>* rb_play_order_get_source (<a class="link" href="RBPlayOrder.html" title="rb-play-order">RBPlayOrder</a> *porder);</pre>
<p>
Only for use by <a class="link" href="RBPlayOrder.html" title="rb-play-order"><span class="type">RBPlayOrder</span></a> subclasses.</p>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>porder</code></em> :</span></p></td>
<td> <a class="link" href="RBPlayOrder.html" title="rb-play-order"><span class="type">RBPlayOrder</span></a> instance
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td> the playing <a class="link" href="RBSource.html" title="RBSource"><span class="type">RBSource</span></a> instance.
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="rb-play-order-get-db"></a><h3>rb_play_order_get_db ()</h3>
<pre class="programlisting"><a class="link" href="RhythmDB.html" title="rhythmdb">RhythmDB</a>* rb_play_order_get_db (<a class="link" href="RBPlayOrder.html" title="rb-play-order">RBPlayOrder</a> *porder);</pre>
<p>
Only for use by <a class="link" href="RBPlayOrder.html" title="rb-play-order"><span class="type">RBPlayOrder</span></a> subclasses.</p>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>porder</code></em> :</span></p></td>
<td> <a class="link" href="RBPlayOrder.html" title="rb-play-order"><span class="type">RBPlayOrder</span></a> instance
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td> the <a class="link" href="RhythmDB.html" title="rhythmdb"><span class="type">RhythmDB</span></a> instance.
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="rb-play-order-get-query-model"></a><h3>rb_play_order_get_query_model ()</h3>
<pre class="programlisting">RhythmDBQueryModel* rb_play_order_get_query_model (<a class="link" href="RBPlayOrder.html" title="rb-play-order">RBPlayOrder</a> *porder);</pre>
<p>
Only for use by <a class="link" href="RBPlayOrder.html" title="rb-play-order"><span class="type">RBPlayOrder</span></a> subclasses.</p>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>porder</code></em> :</span></p></td>
<td> <a class="link" href="RBPlayOrder.html" title="rb-play-order"><span class="type">RBPlayOrder</span></a> instance
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td> the active <span class="type">RhythmDBQueryModel</span> for the playing source.
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="rb-play-order-model-not-empty"></a><h3>rb_play_order_model_not_empty ()</h3>
<pre class="programlisting"><a
href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"
>gboolean</a> rb_play_order_model_not_empty (<a class="link" href="RBPlayOrder.html" title="rb-play-order">RBPlayOrder</a> *porder);</pre>
<p>
</p>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>porder</code></em> :</span></p></td>
<td> RBPlayOrder instance
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td> true if the <span class="type">RhythmDBQueryModel</span> is not empty.
Can be used to implement has_next and has_previous for play orders
that have no beginning or end.
</td>
</tr>
</tbody>
</table></div>
</div>
</div>
<div class="refsect1" lang="en">
<a name="RBPlayOrder.property-details"></a><h2>Property Details</h2>
<div class="refsect2" lang="en">
<a name="RBPlayOrder--player"></a><h3>The <code class="literal">"player"</code> property</h3>
<pre class="programlisting"> "player" <a class="link" href="RBShellPlayer.html" title="rb-shell-player">RBShellPlayer</a>* : Read / Write / Construct Only</pre>
<p>
The <a class="link" href="RBShellPlayer.html" title="rb-shell-player"><span class="type">RBShellPlayer</span></a> instance</p>
<p>
</p>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="RBPlayOrder--playing-entry"></a><h3>The <code class="literal">"playing-entry"</code> property</h3>
<pre class="programlisting"> "playing-entry" <a class="link" href="RhythmDB.html#RhythmDBEntry" title="RhythmDBEntry">RhythmDBEntry</a>* : Read / Write</pre>
<p>
The current playing <a class="link" href="RhythmDB.html#RhythmDBEntry" title="RhythmDBEntry"><span class="type">RhythmDBEntry</span></a></p>
<p>
</p>
</div>
</div>
<div class="refsect1" lang="en">
<a name="RBPlayOrder.signal-details"></a><h2>Signal Details</h2>
<div class="refsect2" lang="en">
<a name="RBPlayOrder-have-next-previous-changed"></a><h3>The <code class="literal">"have-next-previous-changed"</code> signal</h3>
<pre class="programlisting">void user_function (<a class="link" href="RBPlayOrder.html" title="rb-play-order">RBPlayOrder</a> *porder,
<a
href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"
>gboolean</a> have_next,
<a
href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"
>gboolean</a> have_previous,
<a
href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gpointer"
>gpointer</a> user_data) : Run Last</pre>
<p>
Emitted as a hint to suggest that the sensitivity of next/previous
buttons may need to be updated.</p>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>porder</code></em> :</span></p></td>
<td> the <a class="link" href="RBPlayOrder.html" title="rb-play-order"><span class="type">RBPlayOrder</span></a>
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>have_next</code></em> :</span></p></td>
<td> if <a
href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#TRUE:CAPS"
><code class="literal">TRUE</code></a>, the play order has at least one more entry
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>have_previous</code></em> :</span></p></td>
<td> if <a
href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#TRUE:CAPS"
><code class="literal">TRUE</code></a>, the play order has at least one entry
before the current entry
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>user_data</code></em> :</span></p></td>
<td>user data set when the signal handler was connected.</td>
</tr>
</tbody>
</table></div>
</div>
</div>
</div>
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