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#ifndef __com_sun_star_frame_XModel_idl__
#define __com_sun_star_frame_XModel_idl__

#include <com/sun/star/lang/XComponent.idl>
#include <com/sun/star/beans/PropertyValue.idl>
#include <com/sun/star/frame/XController.idl>
#include <com/sun/star/container/NoSuchElementException.idl>
#include <com/sun/star/uno/XInterface.idl>


//=============================================================================

 module com {  module sun {  module star {  module frame {

//=============================================================================
/** represents a component which is created from an URL and arguments.

    <p>
    It is a representation of a resource in the sense that it was
    created/loaded from the resource. The arguments are passed to the loader
    to modify its behavior. An example for such an argument is "AsTemplate",
    which loads the resource as a template for a new document.
    (see <type scope="com::sun::star::document">MediaDescriptor</type> for further details)
    </p>

    <p>
    Models can be controlled by controller components, which are usually
    views of the model.
    (see <type>Controller</type> for further details)
    </p>

    <p>
    If there is at least one controller, there is by definition a
    current controller. And if that controller supports the interface
    <type scope="com::sun::star::view">XSelectionSupplier</type>, it has a current selection too.
    </p>

    @see com::sun::star::document::MediaDescriptor
    @see Controller
    @see com::sun::star::view::XSelectionSupplier
 */
published interface XModel: com::sun::star::lang::XComponent
{
    //-------------------------------------------------------------------------
    /** informs a model about its resource description.

        @param URL
            specifies the resource

        @param Arguments
            are optional arguments for that resource
            (see <type scope="com::sun::star::document">MediaDescriptor</type>)

        @return
            <TRUE/> for success
            <br>
            <FALSE/> otherwise
     */
    boolean attachResource(
        [in] string URL,
        [in] sequence<com::sun::star::beans::PropertyValue> Arguments);

    //-------------------------------------------------------------------------
    /** provides information about the location of this model

        @returns
            the URL of the resource which is represented by this model.

        @see XStorable::getLocation()
     */
    string getURL();

    //-------------------------------------------------------------------------
    /** provides read access on currently representation of the
        <type scope="com::sun::star::document">MediaDescriptor</type>
        of this model which describes the model and his state

        @returns
            the arguments with which the model was originally created or
            stored the last time.
     */
    sequence< com::sun::star::beans::PropertyValue > getArgs();

    //-------------------------------------------------------------------------
    /** is called whenever a new controller is created for this model.

        <p>
        The <type scope="com::sun::star::lang">XComponent</type> interface
        of the controller must be used to recognize when it is deleted.
        </p>

        @param Controller
            a new controller for this model

        @see XModel::disconnectController()
     */
    [oneway] void connectController( [in] XController Controller );

    //-------------------------------------------------------------------------
    /** is called whenever an existing controller should be deregistered at this model.

        <p>
        The <type scope="com::sun::star::lang">XComponent</type> interface
        of the controller must be used to recognize when it is deleted.
        </p>

        @param Controller
            the existing controller which should be deregistered

        @see XModel::connectController()
     */
    [oneway] void disconnectController( [in] XController Controller );

    //-------------------------------------------------------------------------
    /** suspends some notifications to the controllers which are used
        for display updates.

        <p>
        The calls to <member>XModel::lockControllers()</member> and
        <member>XModel::unlockControllers()</member> may be
        nested and even overlapping, but they must be in pairs. While
        there is at least one lock remaining, some notifications
        for display updates are not broadcasted.
        </p>
     */
    [oneway] void lockControllers();

    //-------------------------------------------------------------------------
    /** resumes the notifications which were suspended by
        <member>XModel::lockControllers()</member>.

        <p>
        The calls to <member>XModel::lockControllers()</member> and
        <member>XModel::unlockControllers()</member> may be
        nested and even overlapping, but they must be in pairs. While
        there is at least one lock remaining, some notifications for
        display updates are not broadcasted.
        </p>
    */
    [oneway] void unlockControllers();

    //-------------------------------------------------------------------------
    /** determines if there is at least one lock remaining.

        <p>
        While there is at least one lock remaining, some notifications
        for display updates are not broadcasted to the controllers.
        </p>

        @return
            <TRUE/> if any lock exist
            <br>
            <FALSE/> otherwise
     */
    boolean hasControllersLocked();

    //-------------------------------------------------------------------------
    /** provides access to the controller which currently controls this model

        @returns
            If the controller which is active is a controller of this model,
            it will be returned. If not, the controller which was the last
            active of this model is returned. If no controller of this model
            ever was active, the controller first registered is returned. If no
            controller is registered for this model, <NULL/> is returned.
     */
    XController getCurrentController();

    //-------------------------------------------------------------------------
    /** sets a registered controller as the current controller.

        @param Controller
            reference to an already existing connected controller, which should be
            the new active one

        @throws com::sun::star::container::NoSuchElementException
            if <var>xController</var> isn't an already connected controller on this model
     */
    void setCurrentController( [in] XController Controller )
            raises( com::sun::star::container::NoSuchElementException );

    //-------------------------------------------------------------------------
    /** provides read access on current selection on controller

        @returns
            the current selection in the current controller.
            If there is no current controller, it returns <NULL/>.
     */
    com::sun::star::uno::XInterface getCurrentSelection();
};

//=============================================================================

}; }; }; };

#endif

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