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#ifndef __com_sun_star_task_InteractionHandler_idl__
#define __com_sun_star_task_InteractionHandler_idl__

module com { module sun { module star {
    module lang { published interface XInitialization; };
    module task { published interface XInteractionHandler; };
}; }; };

module com { module sun { module star { module task {

//============================================================================
/** An interaction request handler that lets the user handle requests via GUI dialogs.

    <p>The interaction handler service has a numerof of <a href="#built_in_handler">built-in handlers</a>, responsible
    for a lot of well known interactions. Additionally, there's a configuration module which allows to
    <a href="#configuring_handlers">configure additional handlers</a>, responsible for arbitrary requests.</a></p>

    <a name="built_in_handler"></a>
    <h3>Built-in Handlers</h3>
    The following well-known requests can be dealt with by the built-in handlers:
    <UL>
        <LI><type scope="com::sun::star::ucb">AuthenticationRequest</type></LI>
        <LI><type scope="com::sun::star::ucb">CertificateValidationRequest</type></LI>
        <LI><type scope="com::sun::star::sync2">BadPartnershipException</type>*</LI>
        <LI><type scope="com::sun::star::ucb">HandleCookiesRequest</type></LI>
        <LI><type scope="com::sun::star::ucb">InteractiveAugmentedIOException</type>*</LI>
        <LI><type scope="com::sun::star::ucb">InteractiveCHAOSException</type>*</LI>
        <LI><type scope="com::sun::star::ucb">InteractiveFileIOException</type>*</LI>
        <LI><type scope="com::sun::star::ucb">InteractiveIOException</type>*</LI>
        <LI><type scope="com::sun::star::ucb">InteractiveNetworkConnectException</type>*</LI>
        <LI><type scope="com::sun::star::ucb">InteractiveNetworkException</type>*</LI>
        <LI><type scope="com::sun::star::ucb">InteractiveNetworkGeneralException</type>*</LI>
        <LI><type scope="com::sun::star::ucb">InteractiveNetworkOffLineException</type>*</LI>
        <LI><type scope="com::sun::star::ucb">InteractiveNetworkReadException</type>*</LI>
        <LI><type scope="com::sun::star::ucb">InteractiveNetworkResolveNameException</type>*</LI>
        <LI><type scope="com::sun::star::ucb">InteractiveNetworkWriteException</type>*</LI>
        <LI><type scope="com::sun::star::ucb">InteractiveWrongMediumException</type>*</LI>
        <LI><type scope="com::sun::star::task">PasswordRequest</type></LI>
        <LI><type scope="com::sun::star::java">WrongJavaVersionException</type>*</LI>
        <LI><type scope="com::sun::star::task">DocumentMacroConfirmationRequest</type></LI>
    </UL>
    The requests marked with an asterisk are only handled if (a) their
    continuations match certain restrictions (see below), and (b) the
    necessary resource strings are available (this can be exploited by
    applications that carry only a subset of all resource files with
    them).</P>

    <P>The continuation restrictions are as follows:  Let <VAR>C</VAR> be the
    subset of the provided continuations that are of type
    <type scope="com::sun::star::task">XInteractionApprove</type>,
    <type scope="com::sun::star::task">XInteractionDisapprove</type>,
    <type scope="com::sun::star::task">XInteractionRetry</type>, or
    <type scope="com::sun::star::task">XInteractionAbort</type> (or of a
    derived type).  All other continuations are ignored for these requests.
    The request is only handled if the set <VAR>C</VAR> is any of the
    following:
    <UL>
        <LI>Abort</LI>
        <LI>Retry, Abort</LI>
        <LI>Approve</LI>
        <LI>Approve, Abort</LI>
        <LI>Approve, Disapprove</LI>
        <LI>Approve, Disapprove, Abort</LI>
    </UL></P>

    <P>An
    <type scope="com::sun::star::ucb">InteractiveAugmentedIOException</type>
    carries with it a sequence of arguments, which should be
    <type scope="com::sun::star::beans">PropertyValue</type>s.  The following
    details which properties are interpreted by the interaction handler,
    depending on the request's
    <type scope="com::sun::star::ucb">IOErrorCode</type>:
    <DL>
        <DT><code>"Uri"</code></DT>
        <DD>All error codes except
        <const scope="com::sun::star::ucb">IOErrorCode::DIFFERENT_DEVICES</const>.
        The URI of the involved resource (a <atom>string</atom>).</DD>

        <DT><code>"ResourceName"</code></DT>
        <DD>All error codes except
        <const scope="com::sun::star::ucb">IOErrorCode::DIFFERENT_DEVICES</const>.
        A name for the involved resource (a <atom>string</atom>) that might be
        more meaningful to the user than the URI.  For example, a
        (platform-dependent) path notation for file system resources.</DD>

        <DT><code>"ResourceType"</code></DT>
        <DD><const scope="com::sun::star::ucb">IOErrorCode::DEVICE_NOT_READY</const>
        and
        <const scope="com::sun::star::ucb">IOErrorCode::NOT_EXISTING</const>
        only.  An identifier for the type of resource involved (a
        <atom>string</atom>).  Currently understood values are
        <code>"volume"</code> (e.g., a file system volume) and
        <code>"folder"</code> (i.e., a resource that contains other
        resources).</DD>

        <DT><code>"Removable"</code></DT>
        <DD><const scope="com::sun::star::ucb">IOErrorCode::NOT_EXISTING</const>
        only.  A flag indicating whether the resource resides on a storage
        medium that can be removed by the user (a <atom>boolean</atom>).</DD>

        <DT><code>"Folder"</code></DT>
        <DD><const scope="com::sun::star::ucb">IOErrorCode::CANT_CREATE</const>
        only.  The name of the foler in which a resource cannot be created (a
        <atom>string</atom>).</DD>

        <DT><code>"Volume"</code> and <code>"OtherVolume"</code></DT>
        <DD><const scope="com::sun::star::ucb">IOErrorCode::DIFFERENT_DEVICES</const>
        only.  The names of the two volumes involved (two
        <atom>string</atom>s).</DD>
    </DL></P>

    <a name="configuring_handlers"></a>
    <h3>Configurating additional Handlers</h3>

    <p>It is possible to configure additional interaction handlers, to which certain requests can be delegated. The
    configuration node <code>/org.openoffice.Interaction/InteractionHandlers</code> is evaluated and respected
    by the <code>InteractionHandler</code> implementation.</p>

    <p>A custom interaction handler can declare itself responsible for an arbitrary number of UNO types, specified
    by full-qualified type name. Also, for each type, it can specify whether it is responsible for only this particular
    type, or all possibly existent derived types.</p>

    <p>Whenever the <code>InteractionHandler</code> encounteres a request it cannot fulfill itself, it will examine
    the configuration, to find a handler implementation for the request, and delegate it to the first matching
    handler.</p>

    <p>If multiple custom interaction handlers declare themself responsible for the same request type, it is not
    defined which handler will actully be invoked. Thus, when deploying a custom interaction handler, ensure
    that the types you specify are general enough to cover all requests you want to handle, but also specific
    enough to not cover requests which other handlers might be interested in.</p>
 */
published service InteractionHandler
{
    //------------------------------------------------------------------------
    /** Handle an interaction request.
     */
    interface com::sun::star::task::XInteractionHandler;

    //------------------------------------------------------------------------
    /** Initialize the interaction handler.

        <P>The arguments must be a sequence of
        <type scope="com::sun::star::beans">PropertyValue</type>s.  The
        currently supported properties are:
        <UL>
            <LI><code>"Parent"</code> of type
            <type scope="com::sun::star::awt">XWindow</type> denotes the
            parent window for any GUI dialogs the interaction handler pops up;
            it is strongly recommended that this property is supplied;</LI>
            <LI><code>"Context"</code> of type <atom>string</atom> is a
            textual description of the current context (used, e.g., as a first
            line of text in error boxes); this property is optional.</LI>
        </UL></P>
     */
    interface com::sun::star::lang::XInitialization;
};

}; }; }; };

#endif
