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<?xml version="1.0" ?>
<node name="/Connection_Interface_Contacts" xmlns:tp="http://telepathy.freedesktop.org/wiki/DbusSpec#extensions-v0">
<tp:copyright> Copyright (C) 2005-2008 Collabora Limited </tp:copyright>
<tp:copyright> Copyright (C) 2005, 2006 Nokia Corporation </tp:copyright>
<tp:copyright> Copyright (C) 2006 INdT </tp:copyright>
<tp:license xmlns="http://www.w3.org/1999/xhtml">
<p>This library is free software; you can redistribute it and/or modify it
under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 of the License, or (at
your option) any later version.</p>
<p>This library is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser
General Public License for more details.</p>
<p>You should have received a copy of the GNU Lesser General Public License
along with this library; if not, write to the Free Software Foundation,
Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.</p>
</tp:license>
<interface name="org.freedesktop.Telepathy.Connection.Interface.Contacts">
<tp:requires interface="org.freedesktop.Telepathy.Connection"/>
<tp:added version="0.17.9"/>
<tp:docstring xmlns="http://www.w3.org/1999/xhtml">
<p>This interface allows many attributes of many contacts to be
obtained in a single D-Bus round trip.</p>
<p>Each contact attribute has an string identifier
(<tp:type>Contact_Attribute</tp:type>), which is namespaced
by the D-Bus interface which defines it.</p>
</tp:docstring>
<tp:simple-type name="Contact_Attribute" type="s">
<tp:docstring>
A <tp:type>DBus_Interface</tp:type>, followed by a slash '/' character
and an identifier for an attribute defined by that interface. The
attribute identifier SHOULD be in lower case.
<tp:rationale>
These aren't D-Bus core Properties, and we want them to look visibly
different.
</tp:rationale>
</tp:docstring>
</tp:simple-type>
<tp:mapping name="Single_Contact_Attributes_Map">
<tp:docstring>
Some of the attributes of a single contact.
</tp:docstring>
<tp:member type="s" tp:type="Contact_Attribute" name="Attribute">
<tp:docstring>
The name of the attribute
</tp:docstring>
</tp:member>
<tp:member type="v" name="Value">
<tp:docstring>
The value of the attribute
</tp:docstring>
</tp:member>
</tp:mapping>
<tp:mapping name="Contact_Attributes_Map">
<tp:docstring>Mapping returned by
<tp:member-ref>GetContactAttributes</tp:member-ref>, representing a
collection of Contacts and their requested attributes.</tp:docstring>
<tp:member type="u" tp:type="Contact_Handle" name="Contact">
<tp:docstring>
A contact
</tp:docstring>
</tp:member>
<tp:member type="a{sv}" tp:type="Single_Contact_Attributes_Map"
name="Attributes">
<tp:docstring>
Attributes of that contact
</tp:docstring>
</tp:member>
</tp:mapping>
<property name="ContactAttributeInterfaces" access="read" type="as"
tp:type="DBus_Interface[]"
tp:name-for-bindings="Contact_Attribute_Interfaces">
<tp:docstring>
A list of D-Bus interfaces for which
<tp:member-ref>GetContactAttributes</tp:member-ref> is expected to work.
This cannot change during the lifetime of the Connection.
</tp:docstring>
</property>
<method name="GetContactAttributes"
tp:name-for-bindings="Get_Contact_Attributes">
<tp:docstring>
Return any number of contact attributes for the given handles.
</tp:docstring>
<arg direction="in" name="Handles" type="au" tp:type="Contact_Handle[]">
<tp:docstring>
An array of handles representing contacts.
</tp:docstring>
</arg>
<arg direction="in" name="Interfaces" type="as"
tp:type="DBus_Interface[]">
<tp:docstring xmlns="http://www.w3.org/1999/xhtml">
<p>A list of strings indicating which D-Bus interfaces the calling
process is interested in. All supported attributes from these
interfaces, whose values can be obtained without additional network
activity, will be in the reply.</p>
<p>Connection managers SHOULD ignore interfaces requested which they
do not support (i.e. those not mentioned in the
<tp:member-ref>ContactAttributeInterfaces</tp:member-ref>
property.)</p>
<tp:rationale>
<p>This simplifies client-side code. Clients which care may
distinguish between unsupported interfaces (e.g. this Connection
does not support Avatars), and interfaces on which no information
is known for these contacts (e.g. we don't know the avatar tokens
of any of the contacts, so we omitted them all) by inspecting
<tp:member-ref>ContactAttributeInterfaces</tp:member-ref>.</p>
</tp:rationale>
<p>Attributes from the interface
<tp:dbus-ref>org.freedesktop.Telepathy.Connection</tp:dbus-ref>
are always returned, and need not be requested explicitly.</p>
<p>As well as returning cached information immediately, the
connection MAY start asynchronous requests to obtain better
values for the contact attributes. If better values are later
obtained by this process, they will be indicated with the usual
signals (such as <tp:dbus-ref
namespace="org.freedesktop.Telepathy.Connection.Interface.Aliasing">AliasesChanged</tp:dbus-ref>).</p>
<tp:rationale>
For instance, an XMPP connection manager could download vCards
in response to a request for <tp:dbus-ref
namespace="org.freedesktop.Telepathy.Connection.Interface">Aliasing</tp:dbus-ref>
attributes.
</tp:rationale>
</tp:docstring>
<tp:changed version="0.19.2">
requesting information for interfaces not mentioned in
<tp:member-ref>ContactAttributeInterfaces</tp:member-ref> is no
longer an error. Be aware that older connection managers may still
consider this an error.
</tp:changed>
</arg>
<arg direction="in" name="Hold" type="b">
<tp:docstring>
If true, all handles in the result have been held on behalf of the
calling process, as if by a call to
<tp:dbus-ref namespace="org.freedesktop.Telepathy">Connection.HoldHandles</tp:dbus-ref>.
<tp:rationale>
For further round-trip avoidance.
</tp:rationale>
</tp:docstring>
</arg>
<arg direction="out" type="a{ua{sv}}" name="Attributes"
tp:type="Contact_Attributes_Map">
<tp:docstring xmlns="http://www.w3.org/1999/xhtml">
<p>A dictionary mapping the contact handles to contact attributes.
If any of the requested handles are in fact invalid, they are
simply omitted from this mapping. If contact attributes are not
immediately known, the behaviour is defined by the interface;
the attribute should either be omitted from the result or
replaced with a default value.</p>
<p>Each contact's attributes will always include at least the
identifier that would be obtained by inspecting the handle
(<code>org.freedesktop.Telepathy.Connection/contact-id</code>).</p>
</tp:docstring>
</arg>
<tp:possible-errors>
<tp:error name="org.freedesktop.Telepathy.Error.Disconnected"/>
</tp:possible-errors>
</method>
</interface>
</node>
<!-- vim:set sw=2 sts=2 et ft=xml: -->
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