path: root/doc/xml/ref-ck-session.xml

<refentry id="Session">
  <refmeta>
    <refentrytitle role="top_of_page">org.freedesktop.ConsoleKit.Session</refentrytitle>
  </refmeta>
  <refnamediv>
    <refname>org.freedesktop.ConsoleKit.Session</refname>
    <refpurpose>Session interface</refpurpose>
  </refnamediv>
  <refsynopsisdiv role="synopsis">
    <title role="synopsis.title">Methods</title>
    <synopsis><link linkend="Session.GetId">GetId</link>               (out 'o' ssid)
<link linkend="Session.GetSeatId">GetSeatId</link>           (out 'o' sid)
<link linkend="Session.GetSessionType">GetSessionType</link>      (out 's' type)
<link linkend="Session.GetUser">GetUser</link>             (out 'i' uid)
<link linkend="Session.GetUnixUser">GetUnixUser</link>         (out 'i' uid)
<link linkend="Session.GetX11Display">GetX11Display</link>       (out 's' display)
<link linkend="Session.GetX11DisplayDevice">GetX11DisplayDevice</link> (out 's' x11_display_device)
<link linkend="Session.GetDisplayDevice">GetDisplayDevice</link>    (out 's' display_device)
<link linkend="Session.GetRemoteHostName">GetRemoteHostName</link>   (out 's' remote_host_name)
<link linkend="Session.IsActive">IsActive</link>            (out 'b' active)
<link linkend="Session.IsLocal">IsLocal</link>             (out 'b' local)
<link linkend="Session.GetCreationTime">GetCreationTime</link>     (out 's' iso8601_datetime)
<link linkend="Session.Activate">Activate</link>            ()
<link linkend="Session.Lock">Lock</link>                ()
<link linkend="Session.Unlock">Unlock</link>              ()
<link linkend="Session.GetIdleHint">GetIdleHint</link>         (out 'b' idle_hint)
<link linkend="Session.GetIdleSinceHint">GetIdleSinceHint</link>    (out 's' iso8601_datetime)
<link linkend="Session.SetIdleHint">SetIdleHint</link>         (in  'b' idle_hint)
</synopsis>
  </refsynopsisdiv>
  <refsect1 role="signal_proto">
    <title role="signal_proto.title">Signals</title>
    <synopsis><link linkend="Session::ActiveChanged">ActiveChanged</link>   ('b' is_active)
<link linkend="Session::IdleHintChanged">IdleHintChanged</link> ('b' hint)
<link linkend="Session::Lock">Lock</link>            ()
<link linkend="Session::Unlock">Unlock</link>          ()
</synopsis>
  </refsect1>
  <refsect1 role="impl_interfaces">
    <title role="impl_interfaces.title">Implemented Interfaces</title>
    <para>org.freedesktop.ConsoleKit.Session implements
    org.freedesktop.DBus.Introspectable,
    org.freedesktop.DBus.Properties
    </para>
  </refsect1>
  <refsect1 role="properties">
    <title role="properties.title">Properties</title>
    <synopsis><link linkend="Session:unix-user">'unix-user'</link>          readwrite 'u'
<link linkend="Session:user">'user'</link>               readwrite 'u'
<link linkend="Session:session-type">'session-type'</link>       readwrite 's'
<link linkend="Session:remote-host-name">'remote-host-name'</link>   readwrite 's'
<link linkend="Session:display-device">'display-device'</link>     readwrite 's'
<link linkend="Session:x11-display">'x11-display'</link>        readwrite 's'
<link linkend="Session:x11-display-device">'x11-display-device'</link> readwrite 's'
<link linkend="Session:active">'active'</link>             readwrite 'b'
<link linkend="Session:is-local">'is-local'</link>           readwrite 'b'
<link linkend="Session:idle-hint">'idle-hint'</link>          readwrite 'b'
</synopsis>
  </refsect1>
  <refsect1 role="desc">
    <title role="desc.title">Description</title>
    <para>
      
        <para>Session objects represent and store information
        related to a user session.
        </para>
        <para>The properties associated with the Session
        specifically refer to the properties of the "session leader".
        </para>
      
    </para>
  </refsect1>
  <refsect1 role="details"><title role="details.title">Details</title><refsect2><title><anchor role="function" id="Session.GetId"/>GetId ()</title><indexterm><primary>GetId</primary><secondary>Session</secondary></indexterm><programlisting>GetId (out 'o' ssid)</programlisting></refsect2><para>Returns the ID for Session.</para>
        <variablelist role="params"><varlistentry><term><parameter>ssid</parameter>:</term><listitem><simpara>Session ID</simpara></listitem></varlistentry></variablelist><refsect2><title><anchor role="function" id="Session.GetSeatId"/>GetSeatId ()</title><indexterm><primary>GetSeatId</primary><secondary>Session</secondary></indexterm><programlisting>GetSeatId (out 'o' sid)</programlisting></refsect2><para>Returns the ID for the Seat the Session is
        attached to.</para>
        <variablelist role="params"><varlistentry><term><parameter>sid</parameter>:</term><listitem><simpara>Seat ID</simpara></listitem></varlistentry></variablelist><para>
See also:
<link linkend="Seat">org.freedesktop.ConsoleKit.Seat</link></para><refsect2><title><anchor role="function" id="Session.GetSessionType"/>GetSessionType ()</title><indexterm><primary>GetSessionType</primary><secondary>Session</secondary></indexterm><programlisting>GetSessionType (out 's' type)</programlisting></refsect2>
          <para>Returns the type of the session.</para>
          <para>Warning: we haven't yet defined the allowed values for this property.
          It is probably best to avoid this until we do.
          </para>
        <variablelist role="params"><varlistentry><term><parameter>type</parameter>:</term><listitem><simpara>Session type</simpara></listitem></varlistentry></variablelist><para>
See also:
<link linkend="Session:session-type"><literal>session-type</literal></link></para><refsect2><title><anchor role="function" id="Session.GetUser"/>GetUser ()</title><indexterm><primary>GetUser</primary><secondary>Session</secondary></indexterm><programlisting>GetUser (out 'i' uid)</programlisting></refsect2><para>Returns the user that the session belongs to.</para>
        <variablelist role="params"><varlistentry><term><parameter>uid</parameter>:</term><listitem><simpara>User ID</simpara></listitem></varlistentry></variablelist><para role="deprecated"><warning><para><literal>GetUser</literal> is deprecated since version 0.1.3 and should not be used in newly-written code. Use

  <link linkend="Session.GetUnixUser"><function>GetUnixUser</function></link>
instead.</para></warning></para><para>
See also:
<link linkend="Session:user"><literal>user</literal></link></para><refsect2><title><anchor role="function" id="Session.GetUnixUser"/>GetUnixUser ()</title><indexterm><primary>GetUnixUser</primary><secondary>Session</secondary></indexterm><programlisting>GetUnixUser (out 'i' uid)</programlisting></refsect2><para>Returns the POSIX user ID that the session belongs to.</para>
        <variablelist role="params"><varlistentry><term><parameter>uid</parameter>:</term><listitem><simpara>POSIX User ID</simpara></listitem></varlistentry></variablelist><para>
See also:
<link linkend="Session:unix-user"><literal>unix-user</literal></link></para><refsect2><title><anchor role="function" id="Session.GetX11Display"/>GetX11Display ()</title><indexterm><primary>GetX11Display</primary><secondary>Session</secondary></indexterm><programlisting>GetX11Display (out 's' display)</programlisting></refsect2><para>Returns the value of the X11 DISPLAY for this session
        if one is present.</para>
        <variablelist role="params"><varlistentry><term><parameter>display</parameter>:</term><listitem><simpara>The value of the X11 display</simpara></listitem></varlistentry></variablelist><para>
See also:
<link linkend="Session:x11-display"><literal>x11-display</literal></link></para><refsect2><title><anchor role="function" id="Session.GetX11DisplayDevice"/>GetX11DisplayDevice ()</title><indexterm><primary>GetX11DisplayDevice</primary><secondary>Session</secondary></indexterm><programlisting>GetX11DisplayDevice (out 's' x11_display_device)</programlisting></refsect2><para>Returns the value of the display device (aka TTY) that the
        X11 display for the session is connected to.  If there is no x11-display set then this value
        is undefined.</para>
        <variablelist role="params"><varlistentry><term><parameter>x11_display_device</parameter>:</term><listitem><simpara>The value of the X11 display device</simpara></listitem></varlistentry></variablelist><para>
See also:
<link linkend="Session:x11-display-device"><literal>x11-display-device</literal></link></para><refsect2><title><anchor role="function" id="Session.GetDisplayDevice"/>GetDisplayDevice ()</title><indexterm><primary>GetDisplayDevice</primary><secondary>Session</secondary></indexterm><programlisting>GetDisplayDevice (out 's' display_device)</programlisting></refsect2><para>Returns the value of the display device (aka TTY) that the
        session is connected to.</para>
        <variablelist role="params"><varlistentry><term><parameter>display_device</parameter>:</term><listitem><simpara>The value of the display device</simpara></listitem></varlistentry></variablelist><para>
See also:
<link linkend="Session:display-device"><literal>display-device</literal></link></para><refsect2><title><anchor role="function" id="Session.GetRemoteHostName"/>GetRemoteHostName ()</title><indexterm><primary>GetRemoteHostName</primary><secondary>Session</secondary></indexterm><programlisting>GetRemoteHostName (out 's' remote_host_name)</programlisting></refsect2><para>Returns the value of the remote host name for the session.
        </para>
        <variablelist role="params"><varlistentry><term><parameter>remote_host_name</parameter>:</term><listitem><simpara>The remote host name</simpara></listitem></varlistentry></variablelist><para>
See also:
<link linkend="Session:remote-host-name"><literal>remote-host-name</literal></link></para><refsect2><title><anchor role="function" id="Session.IsActive"/>IsActive ()</title><indexterm><primary>IsActive</primary><secondary>Session</secondary></indexterm><programlisting>IsActive (out 'b' active)</programlisting></refsect2><para>Returns whether the session is active on the Seat that
        it is attached to.</para>
        <para>If the session is not attached to a seat this value is undefined.
        </para>
        <variablelist role="params"><varlistentry><term><parameter>active</parameter>:</term><listitem><simpara>TRUE if the session is active, otherwise FALSE</simpara></listitem></varlistentry></variablelist><para>
See also:
<link linkend="Session:active"><literal>active</literal></link></para><refsect2><title><anchor role="function" id="Session.IsLocal"/>IsLocal ()</title><indexterm><primary>IsLocal</primary><secondary>Session</secondary></indexterm><programlisting>IsLocal (out 'b' local)</programlisting></refsect2><para>Returns whether the session is local</para>
        <para>FIXME: we need to come up with a concrete definition for this value.
        It was originally used as a way to identify XDMCP sessions that originate
        from a remote system.
        </para>
        <variablelist role="params"><varlistentry><term><parameter>local</parameter>:</term><listitem><simpara>TRUE if the session is local, otherwise FALSE</simpara></listitem></varlistentry></variablelist><para>
See also:
<link linkend="Session:is-local"><literal>is-local</literal></link></para><refsect2><title><anchor role="function" id="Session.GetCreationTime"/>GetCreationTime ()</title><indexterm><primary>GetCreationTime</primary><secondary>Session</secondary></indexterm><programlisting>GetCreationTime (out 's' iso8601_datetime)</programlisting></refsect2>
          <para>Returns an ISO 8601 date-time string that corresponds to
          the time that the session was opened.
          </para>
        <variablelist role="params"><varlistentry><term><parameter>iso8601_datetime</parameter>:</term><listitem><simpara>An ISO 8601 format date-type string</simpara></listitem></varlistentry></variablelist><refsect2><title><anchor role="function" id="Session.Activate"/>Activate ()</title><indexterm><primary>Activate</primary><secondary>Session</secondary></indexterm><programlisting>Activate ()</programlisting></refsect2>
          <para>Attempt to activate the this session.  In most
          cases, if successful, this will cause the session to
          become visible and become active on the seat that it
          is attached to.</para>
        <variablelist role="params"/><para>
See also:
<link linkend="Seat.ActivateSession"><function>Seat.ActivateSession()</function></link></para><refsect2><title><anchor role="function" id="Session.Lock"/>Lock ()</title><indexterm><primary>Lock</primary><secondary>Session</secondary></indexterm><programlisting>Lock ()</programlisting></refsect2>
          <para>This will cause a <link linkend="Session::Lock"><literal>Lock</literal></link>
          signal to be emitted for this session.
          </para>
        <variablelist role="params"/><para role="permission">This method is restricted to privileged users by D-Bus policy.</para><para>
See also:
<link linkend="Session::Lock"><literal>Lock signal</literal></link></para><refsect2><title><anchor role="function" id="Session.Unlock"/>Unlock ()</title><indexterm><primary>Unlock</primary><secondary>Session</secondary></indexterm><programlisting>Unlock ()</programlisting></refsect2>
          <para>This will cause an <link linkend="Session::Unlock"><literal>Unlock</literal></link>
          signal to be emitted for this session.
          </para>
          <para>This can be used by login managers to unlock a session before it is
          re-activated during fast-user-switching.
          </para>
        <variablelist role="params"/><para role="permission">This method is restricted to privileged users by D-Bus policy.</para><para>
See also:
<link linkend="Session::Unlock"><literal>Unlock signal</literal></link></para><refsect2><title><anchor role="function" id="Session.GetIdleHint"/>GetIdleHint ()</title><indexterm><primary>GetIdleHint</primary><secondary>Session</secondary></indexterm><programlisting>GetIdleHint (out 'b' idle_hint)</programlisting></refsect2>
          <para>Gets the value of the <link linkend="Session:idle-hint"><literal>idle-hint</literal></link>
          property.
          </para>
        <variablelist role="params"><varlistentry><term><parameter>idle_hint</parameter>:</term><listitem><simpara>The value of the idle-hint</simpara></listitem></varlistentry></variablelist><para>
See also:
<link linkend="Session:idle-hint"><literal>idle-hint</literal></link></para><refsect2><title><anchor role="function" id="Session.GetIdleSinceHint"/>GetIdleSinceHint ()</title><indexterm><primary>GetIdleSinceHint</primary><secondary>Session</secondary></indexterm><programlisting>GetIdleSinceHint (out 's' iso8601_datetime)</programlisting></refsect2>
          <para>Returns an ISO 8601 date-time string that corresponds to
          the time of the last change of the idle-hint.
          </para>
        <variablelist role="params"><varlistentry><term><parameter>iso8601_datetime</parameter>:</term><listitem><simpara>An ISO 8601 format date-type string</simpara></listitem></varlistentry></variablelist><refsect2><title><anchor role="function" id="Session.SetIdleHint"/>SetIdleHint ()</title><indexterm><primary>SetIdleHint</primary><secondary>Session</secondary></indexterm><programlisting>SetIdleHint (in  'b' idle_hint)</programlisting></refsect2>
          <para>This may be used by the session to indicate that
          it is idle.
          </para>
          <para>Use of this method is restricted to the user
          that owns the session.</para>
        <variablelist role="params"><varlistentry><term><parameter>idle_hint</parameter>:</term><listitem><simpara>boolean value to set the idle-hint to</simpara></listitem></varlistentry></variablelist></refsect1>
  <refsect1 role="signals"><title role="signals.title">Signal Details</title><refsect2><title><anchor role="function" id="Session::ActiveChanged"/>The ActiveChanged signal</title><indexterm><primary>ActiveChanged</primary><secondary>Session</secondary></indexterm><programlisting>ActiveChanged ('b' is_active)</programlisting></refsect2>
          <para>Emitted when the active property has changed.</para>
        <variablelist role="params"><varlistentry><term><parameter>is_active</parameter>:</term><listitem><simpara>TRUE if the session is active, otherwise FALSE</simpara></listitem></varlistentry></variablelist><refsect2><title><anchor role="function" id="Session::IdleHintChanged"/>The IdleHintChanged signal</title><indexterm><primary>IdleHintChanged</primary><secondary>Session</secondary></indexterm><programlisting>IdleHintChanged ('b' hint)</programlisting></refsect2>
          <para>Emitted when the idle-hint property has changed.</para>
        <variablelist role="params"><varlistentry><term><parameter>hint</parameter>:</term><listitem><simpara>the new value of idle-hint</simpara></listitem></varlistentry></variablelist><refsect2><title><anchor role="function" id="Session::Lock"/>The Lock signal</title><indexterm><primary>Lock</primary><secondary>Session</secondary></indexterm><programlisting>Lock ()</programlisting></refsect2>
          <para>Emitted in response to a call to the <link linkend="Session.Lock"><function>Lock()</function></link> method.</para>
          <para>It is intended that the screensaver for the session should lock the screen in response to this signal.</para>
        <variablelist role="params"/><refsect2><title><anchor role="function" id="Session::Unlock"/>The Unlock signal</title><indexterm><primary>Unlock</primary><secondary>Session</secondary></indexterm><programlisting>Unlock ()</programlisting></refsect2>
          <para>Emitted in response to a call to the <link linkend="Session.Unlock"><function>Unlock()</function></link> method.</para>
          <para>It is intended that the screensaver for the session should unlock the screen in response to this signal.</para>
        <variablelist role="params"/></refsect1>
  <refsect1 role="property_details"><title role="property_details.title">Property Details</title><refsect2><title><anchor role="function" id="Session:unix-user"/>The "unix-user" property</title><indexterm><primary>unix-user</primary><secondary>Session</secondary></indexterm><programlisting>'unix-user'  readwrite 'u'
</programlisting></refsect2>
          <para>The user assigned to the session.</para>
        <variablelist role="params"/><refsect2><title><anchor role="function" id="Session:user"/>The "user" property</title><indexterm><primary>user</primary><secondary>Session</secondary></indexterm><programlisting>'user'  readwrite 'u'
</programlisting></refsect2>
          <para>The user assigned to the session.</para>
        <variablelist role="params"/><para role="deprecated"><warning><para><literal>user</literal> is deprecated since version 0.1.3 and should not be used in newly-written code. Use

  <link linkend="Session:unix-user"><literal>unix-user</literal></link>
instead.</para></warning></para><refsect2><title><anchor role="function" id="Session:session-type"/>The "session-type" property</title><indexterm><primary>session-type</primary><secondary>Session</secondary></indexterm><programlisting>'session-type'  readwrite 's'
</programlisting></refsect2>
          <para>The type of the session.</para>
          <para>Warning: we haven't yet defined the allowed values for this property.
          It is probably best to avoid this until we do.
          </para>
        <variablelist role="params"/><refsect2><title><anchor role="function" id="Session:remote-host-name"/>The "remote-host-name" property</title><indexterm><primary>remote-host-name</primary><secondary>Session</secondary></indexterm><programlisting>'remote-host-name'  readwrite 's'
</programlisting></refsect2>
          <para>The remote host name for the session.
          </para>
          <para>This will be set in situations where the session is
          opened and controlled from a remote system.
          </para>
          <para>For example, this value will be set when the
          session is created from an SSH or XDMCP connection.
          </para>
        <variablelist role="params"/><refsect2><title><anchor role="function" id="Session:display-device"/>The "display-device" property</title><indexterm><primary>display-device</primary><secondary>Session</secondary></indexterm><programlisting>'display-device'  readwrite 's'
</programlisting></refsect2>
          <para>The display device (aka TTY) that the
          session is connected to.
          </para>
        <variablelist role="params"/><refsect2><title><anchor role="function" id="Session:x11-display"/>The "x11-display" property</title><indexterm><primary>x11-display</primary><secondary>Session</secondary></indexterm><programlisting>'x11-display'  readwrite 's'
</programlisting></refsect2>
          <para>Value of the X11 DISPLAY for this session
          if one is present.
          </para>
        <variablelist role="params"/><refsect2><title><anchor role="function" id="Session:x11-display-device"/>The "x11-display-device" property</title><indexterm><primary>x11-display-device</primary><secondary>Session</secondary></indexterm><programlisting>'x11-display-device'  readwrite 's'
</programlisting></refsect2>
          <para>
          The display device (aka TTY) that the X11 display for the
          session is connected to.  If there is no x11-display set then
          this value is undefined.
          </para>
        <variablelist role="params"/><refsect2><title><anchor role="function" id="Session:active"/>The "active" property</title><indexterm><primary>active</primary><secondary>Session</secondary></indexterm><programlisting>'active'  readwrite 'b'
</programlisting></refsect2>
          <para>
          Whether the session is active on the Seat that
          it is attached to.</para>
          <para>If the session is not attached to a seat this value is undefined.
          </para>
        <variablelist role="params"/><refsect2><title><anchor role="function" id="Session:is-local"/>The "is-local" property</title><indexterm><primary>is-local</primary><secondary>Session</secondary></indexterm><programlisting>'is-local'  readwrite 'b'
</programlisting></refsect2>
          <para>
          Whether the session is local</para>
          <para>FIXME: we need to come up with a concrete definition for this value.
          It was originally used as a way to identify XDMCP sessions that originate
          from a remote system.
          </para>
        <variablelist role="params"/><refsect2><title><anchor role="function" id="Session:idle-hint"/>The "idle-hint" property</title><indexterm><primary>idle-hint</primary><secondary>Session</secondary></indexterm><programlisting>'idle-hint'  readwrite 'b'
</programlisting></refsect2>
          <para>
          This is a hint used to indicate that the session may be idle.
          </para>
          <para>
          For sessions with a <link linkend="Session:x11-display"><literal>x11-display</literal></link> set (ie. graphical
          sessions), it is up to each session to delegate the
          responsibility for updating this value.  Typically, the
          screensaver will set this.
          </para>
          <para>However, for non-graphical sessions with a <link linkend="Session:display-device"><literal>display-device</literal></link> set
          the Session object itself will periodically update this value based
          on the activity detected on the display-device itself.
          </para>
          <para>
          This should not be considered authoritative.
          </para>
        <variablelist role="params"/></refsect1>
</refentry>