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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
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<title>Evolution-Data-Server Manual: Calendar Client (libecal): ETimezoneCache</title>
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<a href="#" class="shortcut">Top</a><span id="nav_description"> <span class="dim">|</span> 
                  <a href="#ETimezoneCache.description" class="shortcut">Description</a></span><span id="nav_hierarchy"> <span class="dim">|</span> 
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                  <a href="#ETimezoneCache.signals" class="shortcut">Signals</a></span>
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<div class="refentry">
<a name="ETimezoneCache"></a><div class="titlepage"></div>
<div class="refnamediv"><table width="100%"><tr>
<td valign="top">
<h2><span class="refentrytitle"><a name="ETimezoneCache.top_of_page"></a>ETimezoneCache</span></h2>
<p>ETimezoneCache — An interface for caching time zone data</p>
</td>
<td class="gallery_image" valign="top" align="right"></td>
</tr></table></div>
<div class="refsect1">
<a name="ETimezoneCache.functions"></a><h2>Functions</h2>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="functions_return">
<col class="functions_name">
</colgroup>
<tbody>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<a class="link" href="ETimezoneCache.html#e-timezone-cache-add-timezone" title="e_timezone_cache_add_timezone ()">e_timezone_cache_add_timezone</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">icaltimezone</span> *
</td>
<td class="function_name">
<a class="link" href="ETimezoneCache.html#e-timezone-cache-get-timezone" title="e_timezone_cache_get_timezone ()">e_timezone_cache_get_timezone</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a href="/usr/share/gtk-doc/html/glib/glib-Doubly-Linked-Lists.html#GList"><span class="returnvalue">GList</span></a> *
</td>
<td class="function_name">
<a class="link" href="ETimezoneCache.html#e-timezone-cache-list-timezones" title="e_timezone_cache_list_timezones ()">e_timezone_cache_list_timezones</a> <span class="c_punctuation">()</span>
</td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect1">
<a name="ETimezoneCache.signals"></a><h2>Signals</h2>
<div class="informaltable"><table border="0">
<colgroup>
<col width="150px" class="signals_return">
<col width="300px" class="signals_name">
<col width="200px" class="signals_flags">
</colgroup>
<tbody><tr>
<td class="signal_type"><span class="returnvalue">void</span></td>
<td class="signal_name"><a class="link" href="ETimezoneCache.html#ETimezoneCache-timezone-added" title="The “timezone-added” signal">timezone-added</a></td>
<td class="signal_flags">Run First</td>
</tr></tbody>
</table></div>
</div>
<div class="refsect1">
<a name="ETimezoneCache.other"></a><h2>Types and Values</h2>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="name">
<col class="description">
</colgroup>
<tbody>
<tr>
<td class="datatype_keyword"> </td>
<td class="function_name"><a class="link" href="ETimezoneCache.html#ETimezoneCache-struct" title="ETimezoneCache">ETimezoneCache</a></td>
</tr>
<tr>
<td class="datatype_keyword">struct</td>
<td class="function_name"><a class="link" href="ETimezoneCache.html#ETimezoneCacheInterface" title="struct ETimezoneCacheInterface">ETimezoneCacheInterface</a></td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect1">
<a name="ETimezoneCache.object-hierarchy"></a><h2>Object Hierarchy</h2>
<pre class="screen">    GInterface
    <span class="lineart">╰──</span> ETimezoneCache
</pre>
</div>
<div class="refsect1">
<a name="ETimezoneCache.prerequisites"></a><h2>Prerequisites</h2>
<p>
ETimezoneCache requires
 <a href="/usr/share/gtk-doc/html/gobject/gobject-The-Base-Object-Type.html#GObject">GObject</a>.</p>
</div>
<div class="refsect1">
<a name="ETimezoneCache.implementations"></a><h2>Known Implementations</h2>
<p>
ETimezoneCache is implemented by
 <a class="link" href="ECalClient.html" title="ECalClient">ECalClient</a>.</p>
</div>
<div class="refsect1">
<a name="ETimezoneCache.includes"></a><h2>Includes</h2>
<pre class="synopsis">#include &lt;libecal/libecal.h&gt;
</pre>
</div>
<div class="refsect1">
<a name="ETimezoneCache.description"></a><h2>Description</h2>
<p>Several classes (both client-side and server-side) cache <span class="type">icaltimezone</span>
instances internally, indexed by their TZID strings.  Classes which do
this should implement <a class="link" href="ETimezoneCache.html#ETimezoneCacheInterface" title="struct ETimezoneCacheInterface"><span class="type">ETimezoneCacheInterface</span></a> to provide a consistent
API for accessing time zone data.</p>
</div>
<div class="refsect1">
<a name="ETimezoneCache.functions_details"></a><h2>Functions</h2>
<div class="refsect2">
<a name="e-timezone-cache-add-timezone"></a><h3>e_timezone_cache_add_timezone ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
e_timezone_cache_add_timezone (<em class="parameter"><code><a class="link" href="ETimezoneCache.html" title="ETimezoneCache"><span class="type">ETimezoneCache</span></a> *cache</code></em>,
                               <em class="parameter"><code><span class="type">icaltimezone</span> *zone</code></em>);</pre>
<p>Adds a copy of <em class="parameter"><code>zone</code></em>
 to <em class="parameter"><code>cache</code></em>
 and emits a
<a class="link" href="ETimezoneCache.html#ETimezoneCache-timezone-added" title="The “timezone-added” signal"><span class="type">“timezone-added”</span></a> signal.  The <em class="parameter"><code>cache</code></em>
 will use the TZID
string returned by <code class="function">icaltimezone_get_tzid()</code> as the lookup key, which can
be passed to <a class="link" href="ETimezoneCache.html#e-timezone-cache-get-timezone" title="e_timezone_cache_get_timezone ()"><code class="function">e_timezone_cache_get_timezone()</code></a> to obtain <em class="parameter"><code>zone</code></em>
 again.</p>
<p>If the <em class="parameter"><code>cache</code></em>
 already has an <span class="type">icaltimezone</span> with the same TZID string
as <em class="parameter"><code>zone</code></em>
, the <em class="parameter"><code>cache</code></em>
 will remain unchanged to avoid invalidating any
<span class="type">icaltimezone</span> pointers which may have already been returned through
<a class="link" href="ETimezoneCache.html#e-timezone-cache-get-timezone" title="e_timezone_cache_get_timezone ()"><code class="function">e_timezone_cache_get_timezone()</code></a>.</p>
<div class="refsect3">
<a name="id-1.2.10.11.2.6"></a><h4>Parameters</h4>
<div class="informaltable"><table 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>cache</p></td>
<td class="parameter_description"><p>an <a class="link" href="ETimezoneCache.html" title="ETimezoneCache"><span class="type">ETimezoneCache</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>zone</p></td>
<td class="parameter_description"><p>an <span class="type">icaltimezone</span></p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<p class="since">Since 3.8</p>
</div>
<hr>
<div class="refsect2">
<a name="e-timezone-cache-get-timezone"></a><h3>e_timezone_cache_get_timezone ()</h3>
<pre class="programlisting"><span class="returnvalue">icaltimezone</span> *
e_timezone_cache_get_timezone (<em class="parameter"><code><a class="link" href="ETimezoneCache.html" title="ETimezoneCache"><span class="type">ETimezoneCache</span></a> *cache</code></em>,
                               <em class="parameter"><code>const <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *tzid</code></em>);</pre>
<p>Obtains an <span class="type">icaltimezone</span> by its TZID string.  If no match is found,
the function returns <a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a>.  The returned <span class="type">icaltimezone</span> is owned by
the <em class="parameter"><code>cache</code></em>
 and should not be modified or freed.</p>
<div class="refsect3">
<a name="id-1.2.10.11.3.5"></a><h4>Parameters</h4>
<div class="informaltable"><table 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>cache</p></td>
<td class="parameter_description"><p>an <a class="link" href="ETimezoneCache.html" title="ETimezoneCache"><span class="type">ETimezoneCache</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>tzid</p></td>
<td class="parameter_description"><p>the TZID of a timezone</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.2.10.11.3.6"></a><h4>Returns</h4>
<p> an <span class="type">icaltimezone</span>, or <a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a></p>
<p></p>
</div>
<p class="since">Since 3.8</p>
</div>
<hr>
<div class="refsect2">
<a name="e-timezone-cache-list-timezones"></a><h3>e_timezone_cache_list_timezones ()</h3>
<pre class="programlisting"><a href="/usr/share/gtk-doc/html/glib/glib-Doubly-Linked-Lists.html#GList"><span class="returnvalue">GList</span></a> *
e_timezone_cache_list_timezones (<em class="parameter"><code><a class="link" href="ETimezoneCache.html" title="ETimezoneCache"><span class="type">ETimezoneCache</span></a> *cache</code></em>);</pre>
<p>Returns a list of <span class="type">icaltimezone</span> instances that were explicitly added to
the <em class="parameter"><code>cache</code></em>
 through <a class="link" href="ETimezoneCache.html#e-timezone-cache-add-timezone" title="e_timezone_cache_add_timezone ()"><code class="function">e_timezone_cache_add_timezone()</code></a>.  In particular, any
built-in time zone data that <a class="link" href="ETimezoneCache.html#e-timezone-cache-get-timezone" title="e_timezone_cache_get_timezone ()"><code class="function">e_timezone_cache_get_timezone()</code></a> may use to
match a TZID string is excluded from the returned list.</p>
<p>Free the returned list with <a href="/usr/share/gtk-doc/html/glib/glib-Doubly-Linked-Lists.html#g-list-free"><code class="function">g_list_free()</code></a>.  The list elements are owned
by the <em class="parameter"><code>cache</code></em>
 and should not be modified or freed.</p>
<div class="refsect3">
<a name="id-1.2.10.11.4.6"></a><h4>Parameters</h4>
<div class="informaltable"><table 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>cache</p></td>
<td class="parameter_description"><p>an <a class="link" href="ETimezoneCache.html" title="ETimezoneCache"><span class="type">ETimezoneCache</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.2.10.11.4.7"></a><h4>Returns</h4>
<p> a <a href="/usr/share/gtk-doc/html/glib/glib-Doubly-Linked-Lists.html#GList"><span class="type">GList</span></a> of
<span class="type">icaltimezone</span> instances. </p>
<p><span class="annotation">[<acronym title="Free data container after the code is done."><span class="acronym">transfer container</span></acronym>][<acronym title="Generics and defining elements of containers and arrays."><span class="acronym">element-type</span></acronym> icaltimezone]</span></p>
</div>
<p class="since">Since 3.8</p>
</div>
</div>
<div class="refsect1">
<a name="ETimezoneCache.other_details"></a><h2>Types and Values</h2>
<div class="refsect2">
<a name="ETimezoneCache-struct"></a><h3>ETimezoneCache</h3>
<pre class="programlisting">typedef struct _ETimezoneCache ETimezoneCache;</pre>
<p class="since">Since 3.8</p>
</div>
<hr>
<div class="refsect2">
<a name="ETimezoneCacheInterface"></a><h3>struct ETimezoneCacheInterface</h3>
<pre class="programlisting">struct ETimezoneCacheInterface {
	GTypeInterface parent_interface;

	/* Methods */
	void		(*add_timezone)		(ETimezoneCache *cache,
						 icaltimezone *zone);
	icaltimezone * (*get_timezone)		(ETimezoneCache *cache,
						 const gchar *tzid);
	GList *		(*list_timezones) (ETimezoneCache *cache);

	/* Signals */
	void		(*timezone_added) (ETimezoneCache *cache,
						 icaltimezone *zone);
};
</pre>
<p class="since">Since 3.8</p>
</div>
</div>
<div class="refsect1">
<a name="ETimezoneCache.signal-details"></a><h2>Signal Details</h2>
<div class="refsect2">
<a name="ETimezoneCache-timezone-added"></a><h3>The <code class="literal">“timezone-added”</code> signal</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
user_function (<a class="link" href="ETimezoneCache.html" title="ETimezoneCache"><span class="type">ETimezoneCache</span></a> *cache,
               <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a>        zone,
               <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a>        user_data)</pre>
<p>Emitted when a new <span class="type">icaltimezone</span> is added to <em class="parameter"><code>cache</code></em>
.</p>
<div class="refsect3">
<a name="id-1.2.10.13.2.5"></a><h4>Parameters</h4>
<div class="informaltable"><table 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>cache</p></td>
<td class="parameter_description"><p>the <a class="link" href="ETimezoneCache.html" title="ETimezoneCache"><span class="type">ETimezoneCache</span></a> which emitted the signal</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>zone</p></td>
<td class="parameter_description"><p>the newly-added <span class="type">icaltimezone</span></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>user_data</p></td>
<td class="parameter_description"><p>user data set when the signal handler was connected.</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<p>Flags: Run First</p>
</div>
</div>
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