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POGetting list of contacts with Gnome-Shell JS interface
 

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  1. POGetting list of contacts with Gnome-Shell JS interface
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    <p>I've just started fiddling with writing gnome-shell extensions, and would like to know how to get a list of contacts a user has.</p> <p>I've tracked down some likely files: <code>gnome-shell/js/ui/contactDisplay.js</code> and <code>gnome-shell/src/shell_contact_system.c</code>.</p> <p>Now I notice in <code>shell_contact_system.c</code> the following function:</p> <pre><code>/** * shell_contact_system_get_all: * @self: A #ShellContactSystem * * Returns: (transfer none): All individuals */ GeeMap * shell_contact_system_get_all (ShellContactSystem *self) { GeeMap *individuals; g_return_val_if_fail (SHELL_IS_CONTACT_SYSTEM (self), NULL); individuals = folks_individual_aggregator_get_individuals (self-&gt;priv-&gt;aggregator); return individuals; } </code></pre> <p>This suggests that inthe javascript interface I can use function <code>get_all</code> (my belief is reinforced by the fact that the <code>.c</code> file also has a <code>shell_contact_system_get_individual</code> and <code>contactDisplay.js</code> demonstrates the use of <code>Shell.ContactSystem.get_default().get_individual</code>), so I try:</p> <pre><code>contactSys = Shell.ContactSystem.get_default(); // get contacts contacts = contactSys.get_all(); </code></pre> <p>It works! (I'm trying it out in Gnome-shell's "looking glass" javascript interpreter).</p> <p>It appears to be a 'Gobject' so I have no idea what to do with this object to get the names of my contacts out. I notice (from the C code) that this object is a <code>GeeMap *</code>, so looking at the <a href="http://people.gnome.org/~dvillevalois/libgee/doc/gee-1.0/Gee.Map.html" rel="nofollow">documentation for Gee.Map</a>, I see I can do the following:</p> <pre><code>contacts.size // returns 31, which is the number of contacts I have ! contacts.values // is a Gee.Collection contacts.keys // is a Gee.Set </code></pre> <p>I then try to look at <code>contacts.values</code> and <code>contacts.key</code>, noting the <code>to_array()</code> method these have:</p> <pre><code>contacts.values.to_array() contacts.keys.to_array() </code></pre> <p>However when I do this I get an <strong>empty array</strong> back out: <code>contacts.xxx.to_array().size</code> is 0, yet <code>contacts.size</code> is 31 ?? !!</p> <p>The same occurs when I attempt to use a <code>contacts.map_iterator()</code> to iterate through the map; <code>it.get_value()</code> and <code>it.get_key()</code> appear to be null.</p> <p>So, my question is: <strong>How can I access the individual elements of <code>contacts</code>?</strong></p> <p>I do note that the comment for <code>shell_contact_system_get_all</code> says <code>Returns: (transfer none): ...</code> whilst <code>shell_contact_system_get_individual</code> says <code>Returns: (transfer full): ...</code>, and the latter function works (provided I know the ID of the individual I want to look up, which is my problem), whereas the former doesn't. Could this be something to do with it?</p> <p>Also, as a workaround, I can currently make use of the <code>contactSearchProvider</code> class to achieve this (used by the overview when you intall <code>gnome-contacts</code> where you can type the name of a contact and they'll appear in the overview). I basically search for <code>''</code> which should return me a list of every contact. It seems roundabout though - I feel I should just be able to use the <code>get_all()</code> method to get all the contacts without having to search on an empty string...</p> <pre><code> const ContactDisplay = imports.ui.contactDisplay; cds = new ContactDisplay.contactSearchProvider; res = cds.getInitialResultSet(['']); // woohoo! res.length is 31, and res[0], res[1], ... are all not null! </code></pre> <p>Any help would be greatly appreciated (by the way, is there any sort of documentation about for this? I feel extremely inadequate when I stare at the source and try to deduce all the documentation from it!)</p>
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