-->
  <interface name="org.gnome.Shell.Extensions">

    <!--
        ListExtensions:
        @extensions: A dictionary of extension infos

        Get a list of installed extensions. The returned @extensions
        dictionary maps extension UUIDs to info vardicts. See
        GetExtensionInfo() for documentation on possible keys.
    -->
    <method name="ListExtensions">
      <arg type="a{sa{sv}}" direction="out" name="extensions"/>
    </method>

    <!--
        GetExtensionInfo:
        @uuid: The UUID of the extension
        @info: The returned extension info

        The information returned in the @info vardict depends on the
        metadata the extension provides, however it is guaranteed to
        contain the following keys:

        <variablelist>
          <varlistentry>
            <term>uuid s</term>
            <listitem><para>The UUID of the extension</para></listitem>
          </varlistentry>

          <varlistentry>
            <term>name s</term>
            <listitem><para>The name of the extension</para></listitem>
          </varlistentry>

          <varlistentry>
            <term>description s</term>
            <listitem><para>
              A short summary that describes what the extension does
            </para></listitem>
          </varlistentry>

          <varlistentry>
            <term>shell-version as</term>
            <listitem><para>An array of support shell versions</para></listitem>
          </varlistentry>

          <varlistentry>
            <term>type d</term>
            <listitem><para>
              The type of extension:
              <simplelist>
                <member>1: SYSTEM</member>
                <member>2: PER_USER</member>
              </simplelist>
            </para></listitem>
          </varlistentry>

          <varlistentry>
            <term>state d</term>
            <listitem><para>
              The state the extension is in:
              <simplelist>
                <member>1: ENABLED</member>
                <member>2: DISABLED</member>
                <member>3: ERROR</member>
                <member>4: OUT_OF_DATE</member>
                <member>5: DOWNLOADING</member>
                <member>6: INITIALIZED</member>
                <member>99: UNINSTALLED</member>
              </simplelist>
            </para></listitem>
          </varlistentry>

          <varlistentry>
            <term>path s</term>
            <listitem><para>The extension directory</para></listitem>
          </varlistentry>

          <varlistentry>
            <term>error s</term>
            <listitem><para>The most recent error caught in init(), enable() or disable()</para></listitem>
          </varlistentry>

          <varlistentry>
            <term>hasPrefs b</term>
            <listitem><para>Whether the extension includes preference UI</para></listitem>
          </varlistentry>
        </variablelist>

        By convention, many extensions will also include the following keys:
        <variablelist>
          <varlistentry>
            <term>version d</term>
            <listitem><para>The extension version</para></listitem>
          </varlistentry>

          <varlistentry>
            <term>url s</term>
            <listitem><para>The URL to the extension homepage or repository</para></listitem>
          </varlistentry>

          <varlistentry>
            <term>settings-schema s</term>
            <listitem><para>The ID of a bundled GSettings schema</para></listitem>
          </varlistentry>

          <varlistentry>
            <term>gettext-domain s</term>
            <listitem><para>The domain used for translations</para></listitem>
          </varlistentry>
        </variablelist>
    -->
    <method name="GetExtensionInfo">
      <arg type="s" direction="in" name="uuid"/>
      <arg type="a{sv}" direction="out" name="info"/>
    </method>

    <!--
        GetExtensionErrors:
        @uuid: The UUID of the extension
        @errors: The returned errors

        Get the list of errors that caused the extension
        to be in ERROR state.
    -->
    <method name="GetExtensionErrors">
      <arg type="s" direction="in" name="uuid"/>
      <arg type="as" direction="out" name="errors"/>
    </method>

    <!--
        InstallRemoteExtension:
        @uuid: The UUID of the extension
        @result: The result of the operation

        Download and install an extension.
    -->
    <method name="InstallRemoteExtension">
      <arg type="s" direction="in" name="uuid"/>
      <arg type="s" direction="out" name="result"/>
    </method>

    <!--
        UninstallExtension:
        @uuid: The UUID of the extension
        @success: Whether the operation was successful

        Uninstall an extension.
    -->
    <method name="UninstallExtension">
      <arg type="s" direction="in" name="uuid"/>
      <arg type="b" direction="out" name="success"/>
    </method>

    <!--
        ReloadExtension:
        @uuid: The UUID of the extension

        Reload an extension.
    -->
    <method name="ReloadExtension">
      <arg type="s" direction="in" name="uuid"/>
    </method>

    <!--
        EnableExtension:
        @uuid: The UUID of the extension
        @success: Whether the operation was successful

        Enable an extension.
    -->
    <method name="EnableExtension"> \
      <arg type="s" direction="in" name="uuid"/> \
      <arg type="b" direction="out" name="success"/> \
    </method> \

    <!--
        DisableExtension:
        @uuid: The UUID of the extension
        @success: Whether the operation was successful

        Disable an extension.
    -->
    <method name="DisableExtension"> \
      <arg type="s" direction="in" name="uuid"/> \
      <arg type="b" direction="out" name="success"/> \
    </method> \

    <!--
        LaunchExtensionPrefs:
        Deprecated for OpenExtensionPrefs
    -->
    <method name="LaunchExtensionPrefs">
      <arg type="s" direction="in" name="uuid"/>
    </method>

    <!--
        OpenExtensionPrefs:
        @uuid: The UUID of the extension
        @parent_window: Identifier for the application window
        @options: Vardict with further options

        Opens the prefs dialog of extension @uuid.

        The following @options are recognized:

        <variablelist>
          <varlistentry>
            <term>modal b</term>
            <listitem>
              <para>Whether the prefs window should be modal, default: false</para>
            </listitem>
          </varlistentry>
        </variablelist>
    -->
    <method name="OpenExtensionPrefs">
      <arg type="s" direction="in" name="uuid"/>
      <arg type="s" direction="in" name="parent_window"/>
      <arg type="a{sv}" direction="in" name="options"/>
    </method>

    <!--
        CheckForUpdates:
        Update all extensions for which updates are available
    -->
    <method name="CheckForUpdates"/>

    <signal name="ExtensionStateChanged">
      <arg type="s" name="uuid"/>
      <arg type="a{sv}" name="state"/>
    </signal>

    <!--
        ExtensionStatusChanged:
        Deprecated for ExtensionStateChanged
    -->
    <signal name="ExtensionStatusChanged">
      <arg type="s" name="uuid"/>
      <arg type="i" name="state"/>
      <arg type="s" name="error"/>
    </signal>

    <!--
        ShellVersion:
        The GNOME Shell version
    -->
    <property name="ShellVersion" type="s" access="read"/>

    <!--
        UserExtensionsEnabled:
        Whether user extensions are enabled
    -->
    <property name="UserExtensionsEnabled" type="b" access="readwrite"/>

  </interface>
</node>