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<a href="#libanjuta-AnjutaCommand.description" class="shortcut">Description</a>
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<a name="libanjuta-AnjutaCommand"></a><div class="titlepage"></div>
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<h2><span class="refentrytitle"><a name="libanjuta-AnjutaCommand.top_of_page"></a>AnjutaCommand</span></h2>
<p>AnjutaCommand — System for creating objects that provide a standard
interface to external components (libraries, processes,
etc.)</p>
</td>
<td valign="top" align="right"></td>
</tr></table></div>
<div class="refsynopsisdiv">
<a name="libanjuta-AnjutaCommand.synopsis"></a><h2>Synopsis</h2>
<pre class="synopsis">struct <a class="link" href="libanjuta-AnjutaCommand.html#AnjutaCommandClass" title="struct AnjutaCommandClass">AnjutaCommandClass</a>;
<span class="returnvalue">void</span> <a class="link" href="libanjuta-AnjutaCommand.html#anjuta-command-start" title="anjuta_command_start ()">anjuta_command_start</a> (<em class="parameter"><code><span class="type">AnjutaCommand</span> *self</code></em>);
<span class="returnvalue">void</span> <a class="link" href="libanjuta-AnjutaCommand.html#anjuta-command-cancel" title="anjuta_command_cancel ()">anjuta_command_cancel</a> (<em class="parameter"><code><span class="type">AnjutaCommand</span> *self</code></em>);
<span class="returnvalue">void</span> <a class="link" href="libanjuta-AnjutaCommand.html#anjuta-command-notify-data-arrived" title="anjuta_command_notify_data_arrived ()">anjuta_command_notify_data_arrived</a> (<em class="parameter"><code><span class="type">AnjutaCommand</span> *self</code></em>);
<span class="returnvalue">void</span> <a class="link" href="libanjuta-AnjutaCommand.html#anjuta-command-notify-complete" title="anjuta_command_notify_complete ()">anjuta_command_notify_complete</a> (<em class="parameter"><code><span class="type">AnjutaCommand</span> *self</code></em>,
<em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#guint"><span class="type">guint</span></a> return_code</code></em>);
<span class="returnvalue">void</span> <a class="link" href="libanjuta-AnjutaCommand.html#anjuta-command-notify-progress" title="anjuta_command_notify_progress ()">anjuta_command_notify_progress</a> (<em class="parameter"><code><span class="type">AnjutaCommand</span> *self</code></em>,
<em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gfloat"><span class="type">gfloat</span></a> progress</code></em>);
<a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a> <a class="link" href="libanjuta-AnjutaCommand.html#anjuta-command-is-running" title="anjuta_command_is_running ()">anjuta_command_is_running</a> (<em class="parameter"><code><span class="type">AnjutaCommand</span> *self</code></em>);
<span class="returnvalue">void</span> <a class="link" href="libanjuta-AnjutaCommand.html#anjuta-command-set-error-message" title="anjuta_command_set_error_message ()">anjuta_command_set_error_message</a> (<em class="parameter"><code><span class="type">AnjutaCommand</span> *self</code></em>,
<em class="parameter"><code>const <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *error_message</code></em>);
<a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gchar"><span class="returnvalue">gchar</span></a> * <a class="link" href="libanjuta-AnjutaCommand.html#anjuta-command-get-error-message" title="anjuta_command_get_error_message ()">anjuta_command_get_error_message</a> (<em class="parameter"><code><span class="type">AnjutaCommand</span> *self</code></em>);
<a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a> <a class="link" href="libanjuta-AnjutaCommand.html#anjuta-command-start-automatic-monitor" title="anjuta_command_start_automatic_monitor ()">anjuta_command_start_automatic_monitor</a>
(<em class="parameter"><code><span class="type">AnjutaCommand</span> *self</code></em>);
<span class="returnvalue">void</span> <a class="link" href="libanjuta-AnjutaCommand.html#anjuta-command-stop-automatic-monitor" title="anjuta_command_stop_automatic_monitor ()">anjuta_command_stop_automatic_monitor</a>
(<em class="parameter"><code><span class="type">AnjutaCommand</span> *self</code></em>);
<a class="link" href="libanjuta-AnjutaCommand.html#AnjutaCommandPriv" title="AnjutaCommandPriv">AnjutaCommandPriv</a>;
</pre>
</div>
<div class="refsect1">
<a name="libanjuta-AnjutaCommand.description"></a><h2>Description</h2>
<p>
<span class="type">AnjutaCommand</span> is the base class for objects that are designed to provide
a layer of abstraction between UI code and some other component, like a
library or child process. AnjutaCommand provides a simple and consistent
interface for plugins to interact with these components without needing
to concern themselves with the exact details of how these components work.
</p>
<p>
To create command objects, plugins derive them from an <span class="type">AnjutaCommand</span>
subclass like <span class="type">AnjutaAsyncCommand</span>, which runs commands in another thread or
<span class="type">AnjutaSyncCommand</span>, which runs commands synchronously.
</p>
<p>
These classes determine how ::run is called and how signals are emitted.
::run is responsible for actually doing the work of the command. It is the
responsiblity of the command object that does a certain task to implement
::run to do its job. Everything else is normally implemented by its parent
classes at this point
</p>
<p>
For an example of how to use <span class="type">AnjutaCommand</span>, see the Subversion and Git
plugins.
</p>
</div>
<div class="refsect1">
<a name="libanjuta-AnjutaCommand.details"></a><h2>Details</h2>
<div class="refsect2">
<a name="AnjutaCommandClass"></a><h3>struct AnjutaCommandClass</h3>
<pre class="programlisting">struct AnjutaCommandClass {
GObjectClass parent_class;
/* Virtual Methods */
guint (*run) (AnjutaCommand *self);
void (*start) (AnjutaCommand *self);
void (*cancel) (AnjutaCommand *self);
void (*notify_data_arrived) (AnjutaCommand *self);
void (*notify_complete) (AnjutaCommand *self, guint return_code);
void (*notify_progress) (AnjutaCommand *self, gfloat progress);
void (*set_error_message) (AnjutaCommand *self, const gchar *error_message);
gchar * (*get_error_message) (AnjutaCommand *self);
gboolean (*start_automatic_monitor) (AnjutaCommand *self);
void (*stop_automatic_monitor) (AnjutaCommand *self);
/* Signals */
void (*data_arrived) (AnjutaCommand *command);
void (*command_started) (AnjutaCommand *command);
void (*command_finished) (AnjutaCommand *command, guint return_code);
void (*progress) (AnjutaCommand *command, gfloat progress);
};
</pre>
<p>
</p>
</div>
<hr>
<div class="refsect2">
<a name="anjuta-command-start"></a><h3>anjuta_command_start ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span> anjuta_command_start (<em class="parameter"><code><span class="type">AnjutaCommand</span> *self</code></em>);</pre>
<p>
Starts a command. Client code can handle data from the command by connecting
to the ::data-arrived signal.
</p>
<p>
<span class="type">AnjutaCommand</span> subclasses should override this method to determine how they
call ::run, which actually does the command's legwork.
</p>
<div class="variablelist"><table border="0" class="variablelist">
<colgroup>
<col align="left" valign="top">
<col>
</colgroup>
<tbody><tr>
<td><p><span class="term"><em class="parameter"><code>self</code></em> :</span></p></td>
<td>Command object to start</td>
</tr></tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="anjuta-command-cancel"></a><h3>anjuta_command_cancel ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span> anjuta_command_cancel (<em class="parameter"><code><span class="type">AnjutaCommand</span> *self</code></em>);</pre>
<p>
Cancels a running command.
</p>
<div class="variablelist"><table border="0" class="variablelist">
<colgroup>
<col align="left" valign="top">
<col>
</colgroup>
<tbody><tr>
<td><p><span class="term"><em class="parameter"><code>self</code></em> :</span></p></td>
<td>Command object.</td>
</tr></tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="anjuta-command-notify-data-arrived"></a><h3>anjuta_command_notify_data_arrived ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span> anjuta_command_notify_data_arrived (<em class="parameter"><code><span class="type">AnjutaCommand</span> *self</code></em>);</pre>
<p>
Used by base classes derived from <span class="type">AnjutaCommand</span> to emit the ::data-arrived
signal. This method should be used by both base command classes and
non-base classes as appropriate.
</p>
<div class="variablelist"><table border="0" class="variablelist">
<colgroup>
<col align="left" valign="top">
<col>
</colgroup>
<tbody><tr>
<td><p><span class="term"><em class="parameter"><code>self</code></em> :</span></p></td>
<td>Command object.</td>
</tr></tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="anjuta-command-notify-complete"></a><h3>anjuta_command_notify_complete ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span> anjuta_command_notify_complete (<em class="parameter"><code><span class="type">AnjutaCommand</span> *self</code></em>,
<em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#guint"><span class="type">guint</span></a> return_code</code></em>);</pre>
<p>
Used by base classes derived from <span class="type">AnjutaCommand</span> to emit the
::command-finished signal. This method should not be used by client code or
<span class="type">AnjutaCommand</span> objects that are not base classes.
</p>
<div class="variablelist"><table border="0" class="variablelist">
<colgroup>
<col align="left" valign="top">
<col>
</colgroup>
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>self</code></em> :</span></p></td>
<td>Command object</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>return_code</code></em> :</span></p></td>
<td>The returned code that is passed to the notify callback</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="anjuta-command-notify-progress"></a><h3>anjuta_command_notify_progress ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span> anjuta_command_notify_progress (<em class="parameter"><code><span class="type">AnjutaCommand</span> *self</code></em>,
<em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gfloat"><span class="type">gfloat</span></a> progress</code></em>);</pre>
<p>
Emits the ::progress signal. Can be used by both base classes and
commands as needed.
</p>
<div class="variablelist"><table border="0" class="variablelist">
<colgroup>
<col align="left" valign="top">
<col>
</colgroup>
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>self</code></em> :</span></p></td>
<td>Command object.</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>progress</code></em> :</span></p></td>
<td>The of the command that is passed to the notify callback</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="anjuta-command-is-running"></a><h3>anjuta_command_is_running ()</h3>
<pre class="programlisting"><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a> anjuta_command_is_running (<em class="parameter"><code><span class="type">AnjutaCommand</span> *self</code></em>);</pre>
<div class="variablelist"><table border="0" class="variablelist">
<colgroup>
<col align="left" valign="top">
<col>
</colgroup>
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>self</code></em> :</span></p></td>
<td>Command object.</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>
<a href="http://library.gnome.org/devel/glib/unstable/glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a> if the command is currently running; <a href="http://library.gnome.org/devel/glib/unstable/glib-Standard-Macros.html#FALSE:CAPS"><code class="literal">FALSE</code></a> otherwise.</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="anjuta-command-set-error-message"></a><h3>anjuta_command_set_error_message ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span> anjuta_command_set_error_message (<em class="parameter"><code><span class="type">AnjutaCommand</span> *self</code></em>,
<em class="parameter"><code>const <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *error_message</code></em>);</pre>
<p>
Command objects use this to set error messages when they encounter some kind
of failure.
</p>
<div class="variablelist"><table border="0" class="variablelist">
<colgroup>
<col align="left" valign="top">
<col>
</colgroup>
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>self</code></em> :</span></p></td>
<td>Command object.</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>error_message</code></em> :</span></p></td>
<td>Error message.</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="anjuta-command-get-error-message"></a><h3>anjuta_command_get_error_message ()</h3>
<pre class="programlisting"><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gchar"><span class="returnvalue">gchar</span></a> * anjuta_command_get_error_message (<em class="parameter"><code><span class="type">AnjutaCommand</span> *self</code></em>);</pre>
<p>
Get the error message from the command, if there is one. This method is
normally used from a ::command-finished handler to report errors to the user
when a command finishes.
</p>
<div class="variablelist"><table border="0" class="variablelist">
<colgroup>
<col align="left" valign="top">
<col>
</colgroup>
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>self</code></em> :</span></p></td>
<td>Command object.</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>Error message string that must
be freed when no longer needed. If no error is set, return <a href="http://library.gnome.org/devel/glib/unstable/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a>. <span class="annotation">[<a href="http://foldoc.org/transfer%20full"><span class="acronym">transfer full</span></a>][<a href="http://foldoc.org/allow-none"><span class="acronym">allow-none</span></a>]</span>
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="anjuta-command-start-automatic-monitor"></a><h3>anjuta_command_start_automatic_monitor ()</h3>
<pre class="programlisting"><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a> anjuta_command_start_automatic_monitor
(<em class="parameter"><code><span class="type">AnjutaCommand</span> *self</code></em>);</pre>
<p>
Sets up any monitoring needed for commands that should start themselves
automatically in response to some event.
</p>
<div class="variablelist"><table border="0" class="variablelist">
<colgroup>
<col align="left" valign="top">
<col>
</colgroup>
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>self</code></em> :</span></p></td>
<td>Command object.</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>
<a href="http://library.gnome.org/devel/glib/unstable/glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a> if automatic starting is supported by the command and
no errors were encountered; <a href="http://library.gnome.org/devel/glib/unstable/glib-Standard-Macros.html#FALSE:CAPS"><code class="literal">FALSE</code></a> if automatic starting is unsupported or on
error.</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="anjuta-command-stop-automatic-monitor"></a><h3>anjuta_command_stop_automatic_monitor ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span> anjuta_command_stop_automatic_monitor
(<em class="parameter"><code><span class="type">AnjutaCommand</span> *self</code></em>);</pre>
<p>
Stops automatic monitoring for self executing commands. For commands that
do not support self-starting, this function does nothing.
</p>
<div class="variablelist"><table border="0" class="variablelist">
<colgroup>
<col align="left" valign="top">
<col>
</colgroup>
<tbody><tr>
<td><p><span class="term"><em class="parameter"><code>self</code></em> :</span></p></td>
<td>Command object.</td>
</tr></tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="AnjutaCommandPriv"></a><h3>AnjutaCommandPriv</h3>
<pre class="programlisting">typedef struct _AnjutaCommandPriv AnjutaCommandPriv;</pre>
<p>
</p>
</div>
</div>
<div class="refsect1">
<a name="libanjuta-AnjutaCommand.see-also"></a><h2>See Also</h2>
<span class="type">AnjutaAsyncCommand</span>, <span class="type">AnjutaSyncCommand</span><em class="parameter"><code>include</code></em> libanjuta/anjuta-command.h
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