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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
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<title>ESourceExtension: Evolution-Data-Server Reference Manual</title>
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<a href="#" class="shortcut">Top</a><span id="nav_description">  <span class="dim">|</span> 
                  <a href="#ESourceExtension.description" class="shortcut">Description</a></span><span id="nav_hierarchy">  <span class="dim">|</span> 
                  <a href="#ESourceExtension.object-hierarchy" class="shortcut">Object Hierarchy</a></span>
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<div class="refentry">
<a name="ESourceExtension"></a><div class="titlepage"></div>
<div class="refnamediv"><table width="100%"><tr>
<td valign="top">
<h2><span class="refentrytitle"><a name="ESourceExtension.top_of_page"></a>ESourceExtension</span></h2>
<p>ESourceExtension — Base class for <a class="link" href="ESource.html" title="ESource"><span class="type">ESource</span></a> extensions</p>
</td>
<td class="gallery_image" valign="top" align="right"></td>
</tr></table></div>
<div class="refsect1">
<a name="ESourceExtension.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>
<tbody>
<tr>
<td class="function_type">
<a class="link" href="ESource.html" title="ESource"><span class="returnvalue">ESource</span></a> *
</td>
<td class="function_name">
<a class="link" href="ESourceExtension.html#e-source-extension-ref-source" title="e_source_extension_ref_source ()">e_source_extension_ref_source</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<a class="link" href="ESourceExtension.html#e-source-extension-property-lock" title="e_source_extension_property_lock ()">e_source_extension_property_lock</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<a class="link" href="ESourceExtension.html#e-source-extension-property-unlock" title="e_source_extension_property_unlock ()">e_source_extension_property_unlock</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="ESource.html" title="ESource"><span class="returnvalue">ESource</span></a> *
</td>
<td class="function_name">
<a class="link" href="ESourceExtension.html#e-source-extension-get-source" title="e_source_extension_get_source ()">e_source_extension_get_source</a> <span class="c_punctuation">()</span>
</td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect1">
<a name="ESourceExtension.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>
<tbody><tr>
<td class="datatype_keyword">struct</td>
<td class="function_name"><a class="link" href="ESourceExtension.html#ESourceExtension-struct" title="struct ESourceExtension">ESourceExtension</a></td>
</tr></tbody>
</table></div>
</div>
<div class="refsect1">
<a name="ESourceExtension.object-hierarchy"></a><h2>Object Hierarchy</h2>
<pre class="screen">    <a href="/usr/share/gtk-doc/html/gobject/gobject-The-Base-Object-Type.html#GObject-struct">GObject</a>
    <span class="lineart">╰──</span> ESourceExtension
        <span class="lineart">├──</span> <a class="link" href="ESourceBackend.html" title="ESourceBackend">ESourceBackend</a>
        <span class="lineart">├──</span> <a class="link" href="ESourceAlarms.html" title="ESourceAlarms">ESourceAlarms</a>
        <span class="lineart">├──</span> <a class="link" href="ESourceAuthentication.html" title="ESourceAuthentication">ESourceAuthentication</a>
        <span class="lineart">├──</span> <a class="link" href="ESourceAutocomplete.html" title="ESourceAutocomplete">ESourceAutocomplete</a>
        <span class="lineart">├──</span> <a class="link" href="ESourceBackendSummarySetup.html" title="ESourceBackendSummarySetup">ESourceBackendSummarySetup</a>
        <span class="lineart">├──</span> <a class="link" href="ESourceCamel.html" title="ESourceCamel">ESourceCamel</a>
        <span class="lineart">├──</span> <a class="link" href="ESourceContacts.html" title="ESourceContacts">ESourceContacts</a>
        <span class="lineart">├──</span> <a class="link" href="ESourceGoa.html" title="ESourceGoa">ESourceGoa</a>
        <span class="lineart">├──</span> <a class="link" href="ESourceLDAP.html" title="ESourceLDAP">ESourceLDAP</a>
        <span class="lineart">├──</span> <a class="link" href="ESourceLocal.html" title="ESourceLocal">ESourceLocal</a>
        <span class="lineart">├──</span> <a class="link" href="ESourceMailComposition.html" title="ESourceMailComposition">ESourceMailComposition</a>
        <span class="lineart">├──</span> <a class="link" href="ESourceMailIdentity.html" title="ESourceMailIdentity">ESourceMailIdentity</a>
        <span class="lineart">├──</span> <a class="link" href="ESourceMailSignature.html" title="ESourceMailSignature">ESourceMailSignature</a>
        <span class="lineart">├──</span> <a class="link" href="ESourceMailSubmission.html" title="ESourceMailSubmission">ESourceMailSubmission</a>
        <span class="lineart">├──</span> <a class="link" href="ESourceMDN.html" title="ESourceMDN">ESourceMDN</a>
        <span class="lineart">├──</span> <a class="link" href="ESourceOffline.html" title="ESourceOffline">ESourceOffline</a>
        <span class="lineart">├──</span> <a class="link" href="ESourceOpenPGP.html" title="ESourceOpenPGP">ESourceOpenPGP</a>
        <span class="lineart">├──</span> <a class="link" href="ESourceProxy.html" title="ESourceProxy">ESourceProxy</a>
        <span class="lineart">├──</span> <a class="link" href="ESourceRefresh.html" title="ESourceRefresh">ESourceRefresh</a>
        <span class="lineart">├──</span> <a class="link" href="ESourceResource.html" title="ESourceResource">ESourceResource</a>
        <span class="lineart">├──</span> <a class="link" href="ESourceRevisionGuards.html" title="ESourceRevisionGuards">ESourceRevisionGuards</a>
        <span class="lineart">├──</span> <a class="link" href="ESourceSecurity.html" title="ESourceSecurity">ESourceSecurity</a>
        <span class="lineart">├──</span> <a class="link" href="ESourceSMIME.html" title="ESourceSMIME">ESourceSMIME</a>
        <span class="lineart">├──</span> <a class="link" href="ESourceUoa.html" title="ESourceUoa">ESourceUoa</a>
        <span class="lineart">├──</span> <a class="link" href="ESourceWeather.html" title="ESourceWeather">ESourceWeather</a>
        <span class="lineart">╰──</span> <a class="link" href="ESourceWebdav.html" title="ESourceWebdav">ESourceWebdav</a>
</pre>
</div>
<div class="refsect1">
<a name="ESourceExtension.includes"></a><h2>Includes</h2>
<pre class="synopsis">#include &lt;libedataserver/libedataserver.h&gt;
</pre>
</div>
<div class="refsect1">
<a name="ESourceExtension.description"></a><h2>Description</h2>
<p><a class="link" href="ESourceExtension.html" title="ESourceExtension"><span class="type">ESourceExtension</span></a> is an abstract base class for <a class="link" href="ESource.html" title="ESource"><span class="type">ESource</span></a> extension
objects.  An <a class="link" href="ESourceExtension.html" title="ESourceExtension"><span class="type">ESourceExtension</span></a> object basically just maps the keys in
a key file group to a set of <a href="/usr/share/gtk-doc/html/gobject/gobject-The-Base-Object-Type.html#GObject-struct"><span class="type">GObject</span></a> properties.  The name of the key
file group doubles as the name of the <a class="link" href="ESourceExtension.html" title="ESourceExtension"><span class="type">ESourceExtension</span></a> object.</p>
<p><a class="link" href="ESourceExtension.html" title="ESourceExtension"><span class="type">ESourceExtension</span></a> objects are accessed through <a class="link" href="ESource.html#e-source-get-extension" title="e_source_get_extension ()"><code class="function">e_source_get_extension()</code></a>.</p>
</div>
<div class="refsect1">
<a name="ESourceExtension.functions_details"></a><h2>Functions</h2>
<div class="refsect2">
<a name="e-source-extension-ref-source"></a><h3>e_source_extension_ref_source ()</h3>
<pre class="programlisting"><a class="link" href="ESource.html" title="ESource"><span class="returnvalue">ESource</span></a> *
e_source_extension_ref_source (<em class="parameter"><code><a class="link" href="ESourceExtension.html" title="ESourceExtension"><span class="type">ESourceExtension</span></a> *extension</code></em>);</pre>
<p>Returns the <a class="link" href="ESource.html" title="ESource"><span class="type">ESource</span></a> instance to which the <em class="parameter"><code>extension</code></em>
 belongs.</p>
<p>The returned <a class="link" href="ESource.html" title="ESource"><span class="type">ESource</span></a> is referenced for thread-safety.  Unreference
the <a class="link" href="ESource.html" title="ESource"><span class="type">ESource</span></a> with <a href="/usr/share/gtk-doc/html/gobject/gobject-The-Base-Object-Type.html#g-object-unref"><code class="function">g_object_unref()</code></a> when finished with it.</p>
<div class="refsect3">
<a name="e-source-extension-ref-source.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>extension</p></td>
<td class="parameter_description"><p>an <a class="link" href="ESourceExtension.html" title="ESourceExtension"><span class="type">ESourceExtension</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="e-source-extension-ref-source.returns"></a><h4>Returns</h4>
<p> the <a class="link" href="ESource.html" title="ESource"><span class="type">ESource</span></a> instance. </p>
<p><span class="annotation">[<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>]</span></p>
</div>
<p class="since">Since: <a class="link" href="api-index-3.8.html" title="Index of new symbols in 3.8">3.8</a></p>
</div>
<hr>
<div class="refsect2">
<a name="e-source-extension-property-lock"></a><h3>e_source_extension_property_lock ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
e_source_extension_property_lock (<em class="parameter"><code><a class="link" href="ESourceExtension.html" title="ESourceExtension"><span class="type">ESourceExtension</span></a> *extension</code></em>);</pre>
<p>Acquires a property lock, thus no other thread can change properties
of the <em class="parameter"><code>extension</code></em>
 until the lock is released.</p>
<div class="refsect3">
<a name="e-source-extension-property-lock.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>extension</p></td>
<td class="parameter_description"><p>an <a class="link" href="ESourceExtension.html" title="ESourceExtension"><span class="type">ESourceExtension</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<p class="since">Since: <a class="link" href="api-index-3.18.html" title="Index of new symbols in 3.18">3.18</a></p>
</div>
<hr>
<div class="refsect2">
<a name="e-source-extension-property-unlock"></a><h3>e_source_extension_property_unlock ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
e_source_extension_property_unlock (<em class="parameter"><code><a class="link" href="ESourceExtension.html" title="ESourceExtension"><span class="type">ESourceExtension</span></a> *extension</code></em>);</pre>
<p>Releases a property lock, previously acquired with <a class="link" href="ESourceExtension.html#e-source-extension-property-lock" title="e_source_extension_property_lock ()"><code class="function">e_source_extension_property_lock()</code></a>,
thus other threads can change properties of the <em class="parameter"><code>extension</code></em>
.</p>
<div class="refsect3">
<a name="e-source-extension-property-unlock.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>extension</p></td>
<td class="parameter_description"><p>an <a class="link" href="ESourceExtension.html" title="ESourceExtension"><span class="type">ESourceExtension</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<p class="since">Since: <a class="link" href="api-index-3.18.html" title="Index of new symbols in 3.18">3.18</a></p>
</div>
<hr>
<div class="refsect2">
<a name="e-source-extension-get-source"></a><h3>e_source_extension_get_source ()</h3>
<pre class="programlisting"><a class="link" href="ESource.html" title="ESource"><span class="returnvalue">ESource</span></a> *
e_source_extension_get_source (<em class="parameter"><code><a class="link" href="ESourceExtension.html" title="ESourceExtension"><span class="type">ESourceExtension</span></a> *extension</code></em>);</pre>
<div class="warning">
<p><code class="literal">e_source_extension_get_source</code> has been deprecated since version 3.8 and should not be used in newly-written code.</p>
<p>Use <a class="link" href="ESourceExtension.html#e-source-extension-ref-source" title="e_source_extension_ref_source ()"><code class="function">e_source_extension_ref_source()</code></a> instead.</p>
</div>
<p>Returns the <a class="link" href="ESource.html" title="ESource"><span class="type">ESource</span></a> instance to which <em class="parameter"><code>extension</code></em>
 belongs.</p>
<p>Note this function is not thread-safe.  The returned <a class="link" href="ESource.html" title="ESource"><span class="type">ESource</span></a> could
be finalized by another thread while the caller is still using it.</p>
<div class="refsect3">
<a name="e-source-extension-get-source.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>extension</p></td>
<td class="parameter_description"><p>an <a class="link" href="ESourceExtension.html" title="ESourceExtension"><span class="type">ESourceExtension</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="e-source-extension-get-source.returns"></a><h4>Returns</h4>
<p> the <a class="link" href="ESource.html" title="ESource"><span class="type">ESource</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>
<p class="since">Since: <a class="link" href="api-index-3.6.html" title="Index of new symbols in 3.6">3.6</a></p>
</div>
</div>
<div class="refsect1">
<a name="ESourceExtension.other_details"></a><h2>Types and Values</h2>
<div class="refsect2">
<a name="ESourceExtension-struct"></a><h3>struct ESourceExtension</h3>
<pre class="programlisting">struct ESourceExtension;</pre>
<p>Contains only private data that should be read and manipulated using the
functions below.</p>
<p class="since">Since: <a class="link" href="api-index-3.6.html" title="Index of new symbols in 3.6">3.6</a></p>
</div>
</div>
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