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#ifndef __com_sun_star_ucb_UniversalContentBroker_idl__
#define __com_sun_star_ucb_UniversalContentBroker_idl__

#include <com/sun/star/lang/XComponent.idl>
#include <com/sun/star/ucb/XCommandProcessor.idl>
#include <com/sun/star/ucb/XCommandProcessor2.idl>
#include <com/sun/star/ucb/XContentProviderManager.idl>
#include <com/sun/star/ucb/XContentProvider.idl>
#include <com/sun/star/ucb/XContentIdentifierFactory.idl>
#include <com/sun/star/lang/XInitialization.idl>


module com { module sun { module star { module ucb {

/** is a one-instance service that provides access to a set of
    <type>Content</type>s via <type>ContentProvider</type>s.

    <p>If the instance is created with two arguments of type string,
    these two strings are used to configure the newly instantiated broker;
    see the description of the required
    <type scope="com::sun::star::lang">XInitialization</type> interface for
    details.

    <p>If the instance is created without arguments, the newly instantiated
    broker is not configured.
*/
published service UniversalContentBroker
{
    /** must be implemented to make it possible to resolve cyclic object
        references.

        <p>Those references i.e. may occur if content provider  implementations
        hold references to the Broker. The Broker itself always holds its
        providers. If the Broker shall be released,
        <member scope="com::sun::star::lang">XComponent::dispose</member>
        must be called at the Broker. The implementation of this method must
        call
        <member scope="com::sun::star::lang">XEventListener::disposing</member>
        on the registered listeners (the providers holding the Broker must be
        those listeners) and release the appropriate object references. At
        the other hand, the implementation of XEventListener::disposing must
        release its appropriate references.

        <p>This interface is required.
     */
    interface com::sun::star::lang::XComponent;

    /** provides access to all kind of contents provided by the registered
        content providers.

        <p>This interface is required.
     */
    interface com::sun::star::ucb::XContentProvider;

    /** provides access to a set of content providers registered with the UCB.

        <p>This interface is required.
     */
    interface com::sun::star::ucb::XContentProviderManager;

    /** creates <type>XContentIdentifier</type> implementation objects for
        all kind of contents provided by the UCB.

        <p>This interface is required.
      */
    interface com::sun::star::ucb::XContentIdentifierFactory;

    /** supports the configuration of a newly created broker.

        <p>The
        <member scope="com::sun::star::lang">XInitialization::initialize</member>
        method should be called with two arguments of type string. These strings
        are used as a pair of keys to retrieve a set of content provider
        descriptions from the configuration management (stored at
        <code>org.openoffice.ucb.Configuration.ContentProviders.<var>key<sub>1</sub></var>.SecondaryKeys.<var>key<sub>2</sub></var>.ProviderData</code>
        within the configuration management's hierarchy). The retrieved
        descriptions are in turn used to register the corresponding content
        provider services at the broker.

        <p>Typical values for the pair of strings would be
        <code>"Local"</code>/<code>"Office"</code>, to configure a broker that
        contains all the relevant content providers.

        <p>This interface is required.
     */
    interface com::sun::star::lang::XInitialization;

    /** enables the caller to execute commands at the broker.

        <p>This interface is required.

        <p><pre>
        =======================================================================
        Commands:
        =======================================================================

        [return type]
            [command name]
                [parameter type and name]

        -----------------------------------------------------------------------
        Required commands:
        -----------------------------------------------------------------------

        // This command obtains an interface which allows to query
        // information on commands supported by the Content Broker.

        <type>XCommandInfo</type>
            getCommandInfo
                void

        // This command transfers Contents from one location to another.
        // Additionally, it can be used to create a link to a Content.
        // The implementation must be able to handle Contents provided
        // by any Content Provider. This is different from the command
        // "transfer" that can be supported by a Content. That command
        // typically can only handle <type>Content</type>s provided by one
        // <type>ContentProvider</type>.

        void
            globalTransfer
                <type>GlobalTransferCommandArgument</type>
        </pre>
     */
    interface com::sun::star::ucb::XCommandProcessor;

    /** is an enhanced version of <type>XCommandProcessor</type> that has an
        additional method for releasing command identifiers obtained via
        <member>XCommandProcessor::createCommandIdentifier</member> to avoid
        resource leaks. For a detailed description of the problem refer to
        <member>XCommandProcessor2::releaseCommandIdentifier</member>.

        <p>Where many existing <type>UniversalContentBroker</type>
        implementations do not (yet), every new implementation should support
        this interface.
     */
    [optional] interface com::sun::star::ucb::XCommandProcessor2;

};


}; }; }; };

#endif

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