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module com { module sun { module star { module form { module runtime {

interface XFeatureInvalidation;


/** encapsulates operations on a database form.

    <p>This instance allows for operations on a user interface form, by saving its clients
    from various tedious and error-prone operations.</p>

    <p>As an example, imagine you have a database form, displayed in some user
    interface, which you want to move to the next record.<br/>
    It is as easy as calling com::sun::star::sdbc::XResultSet::next()
    on this form, right? Wrong. First, you need to care for saving the current
    record, so the user doesn't lose her input. So you need to call
    com::sun::star::sdbc::XResultSetUpdate::updateRow() or
    com::sun::star::sdbc::XResultSetUpdate::insertRow(), depending
    on the form's com::sun::star::sdb::RowSet::IsNew property.<br/>
    But then you're done, right? Wrong, again.<br/>
    When the user just entered some data into one of the form fields, but did not yet
    leave this field, then the data is not yet committed to the form, not to talk
    about being committed to the underlying database. So, before everything else,
    you would need to obtain the active control of the form, and commit it.<br/>
    <em>Now</em> you're done ...</p>

    <p>As another example, consider that you want to delete the current record from the
    form. You have to take into account any com::sun::star::form::XConfirmDeleteListeners
    registered at the com::sun::star::form::FormController or the
    com::sun::star::form::component::DataForm.</p>

    <p>If you agree that this is ugly to do and maintain, then <code>XFormOperations</code>
    is for you. It provides an execute() method, which will do all of the above
    for you; plus some similar convenient wrappers for similar functionality.</p>

    @see FormFeature

    @since OOo 2.2
 */
interface XFormOperations : ::com::sun::star::lang::XComponent
{
    /** provides access to the cursor of the form the instance is operating on.
    */
    [attribute, readonly]   ::com::sun::star::sdbc::XRowSet             Cursor;

    /** provides access to the update cursor of the form the instance is operating on.
    */
    [attribute, readonly]   ::com::sun::star::sdbc::XResultSetUpdate    UpdateCursor;

    /** provides access to the form controller which the instance is operating on.

        <p>Note that it is possible to operate on a user interface form without
        actually having access to the form controller instance. However, in this
        case some functionality will not be available. In particular, every feature
        which relies on the active control of the controller might be of limited use.</p>
    */
    [attribute, readonly]   ::com::sun::star::form::runtime::XFormController    Controller;

    /** retrieves the current state of the given feature

        <p>You would usually use this to update some user interface to reflect this state.
        For instance, you could imagine a toolbar button which is associated with a given feature.
        This button would be enabled if and only if the respective feature is currently
        available, and be checked if and only if the feature state is a <code>boolean</code>
        evaluating to `TRUE`.<p>

        @param Feature
            the feature whose state is to be determined. Must be one of the FormFeature
            constants.<br/>
            An invalid value here will be silently ignored, and simply return a FeatureState
            indicating <em>disabled</em> with a `NULL` state.</p>
    */
    FeatureState    getState(
                        [in] short Feature
                    );

    /** determines whether a feature is currently enabled.

        <p>Calling this is equivalent to calling getState(), and evaluating the
        FeatureState::Enabled member.</p>

        @param Feature
            the feature whose state is to be determined. Must be one of the FormFeature
            constants.<br/>
            An invalid value here will be silently ignored, and simply return `FALSE`.
    */
    boolean         isEnabled(
                        [in] short Feature
                    );

    /** executes the operation associated with the given feature

        @param Feature
            the feature which is to be executed. Must be one of the FormFeature
            constants.

        @throws ::com::sun::star::lang::IllegalArgumentException
            if the given Feature is unknown, not executable, or strictly requires arguments
            to be executed.

        @throws ::com::sun::star::sdbc::SQLException
            if a database access error occurs

        @throws ::com::sun::star::lang::WrappedTargetException
            if an exception is caught which is no com::sun::star::uno::RuntimeException
            and no com::sun::star::sdbc::SQLException.

        @see executeWithArguments
    */
    void            execute(
                        [in] short Feature
                    )
                    raises  (   ::com::sun::star::lang::IllegalArgumentException
                            ,   ::com::sun::star::sdbc::SQLException
                            ,   ::com::sun::star::lang::WrappedTargetException
                            );

    /** executes the operation associated with the given feature, with passing arguments for execution

        @param Feature
            the feature which is to be executed. Must be one of the FormFeature
            constants.

        @param Arguments
            the named arguments for the feature to execute. See the FormFeature list
            for features which require arguments.

        @throws ::com::sun::star::lang::IllegalArgumentException
            if the given feature is unknown, or not executable

        @throws ::com::sun::star::lang::IllegalArgumentException
            if the given arguments are not sufficient to execute the feature

        @throws ::com::sun::star::sdbc::SQLException
            if a database access error occurs

        @throws ::com::sun::star::lang::WrappedTargetException
            if an exception is caught which is no com::sun::star::uno::RuntimeException
            and no com::sun::star::sdbc::SQLException.
    */
    void            executeWithArguments(
                        [in] short Feature,
                        [in] sequence< ::com::sun::star::beans::NamedValue > Arguments
                    )
                    raises  (   ::com::sun::star::lang::IllegalArgumentException
                            ,   ::com::sun::star::sdbc::SQLException
                            ,   ::com::sun::star::lang::WrappedTargetException
                            );

    /** commits the current record of the form

        @param RecordInserted
            will be `TRUE` if a record has been inserted, i.e. the form was positioned
            on the insertion row.

        @return
            `TRUE` if and only if the current record needed being committed. That's the
            case if the record or the active control of the form were modified.

        @throws ::com::sun::star::sdbc::SQLException
            if a database access error occurs
    */
    boolean         commitCurrentRecord(
                        [out] boolean RecordInserted
                    )
                    raises ( ::com::sun::star::sdbc::SQLException );

    /** commits the current control of our controller

        @throws ::com::sun::star::sdbc::SQLException
            if a database access error occurs
    */
    boolean         commitCurrentControl(
                    )
                    raises ( ::com::sun::star::sdbc::SQLException );

    /** determines whether the form is currently positioned on the insertion row

        <p>This is a convenience method only. Calling it is equivalent to examining the
        com::sun::star::sdb::RowSet::IsNew property of the form.</p>

        @throws ::com::sun::star::lang::WrappedTargetException
            if an error occurs obtaining the form property
    */
    boolean         isInsertionRow(
                    )
                    raises ( ::com::sun::star::lang::WrappedTargetException );

    /** determines whether the current row of the form is modified

        <p>This is a convenience method only. Calling it is equivalent to examining the
        com::sun::star::sdb::RowSet::IsModified property of the form.</p>

        @throws ::com::sun::star::lang::WrappedTargetException
            if an error occurs obtaining the form property
    */
    boolean         isModifiedRow(
                    )
                    raises ( ::com::sun::star::lang::WrappedTargetException );

    /** denotes the instance which should be notified about features whose state might have changed.

        <p>If this attribute is not `NULL`, the instance which it denotes will be notified
        whenever the state of any supported feature might have changed.</p>

        <p>For instance, imagine a form whose current row has just been moved to another
        record, using the execute() method. This means that potentially, the state
        of all movement-related features might have changed.</p>

        <p>Note that the instance does not actually notify changes in the feature states, but only
        <em>potential</em> changes: It's up to the callee to react on this appropriately. This is
        since OpenOffice.org's application framework features own mechanisms to cache and invalidate
        feature states, so we do not burden this implementation here with such mechanisms.</p>

        @see FormFeature
    */
    [attribute] XFeatureInvalidation    FeatureInvalidation;
};


}; }; }; }; };


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