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 *   Licensed to the Apache Software Foundation (ASF) under one or more
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module com {  module sun {  module star {  module form {  module binding {


/** This service specifies a radio button which is data-aware and thus can be bound to a
    database field, and additionally supports binding to arbitrary external values.

    <p>The com::sun::star::form::binding::XValueBinding instance which
    can be associated with a BindableDatabaseRadioButton must support exchanging
    boolean values. The following mapping between external values and control states apply:
    <ul><li>`TRUE` will be mapped to the button being checked, and vice versa</li>
        <li>`FALSE` will be mapped to it being unchecked, and vice versa</li>
        <li>`NULL` will be mapped to it being in undetermined state</li>
    </ul></p>

    <p>If the value binding associated with a BindableDatabaseRadioButton
    supports exchanging string values, <em>and</em> the com::sun::star::form::component::RadioButton::RefValue
    is <em>not</em> empty, then the radio button will exchange its value as string:
    <ul><li>A string equal to the reference value will be mapped to the button being checked, and vice versa</li>
        <li>A string not equal to the reference value will be mapped to the button being unchecked, and vice versa</li>
        <li>`NULL` will be mapped to it being in undetermined state</li>
    </ul></p>

    @see com::sun::star::form::binding::XValueBinding::supportsType
    @see com::sun::star::awt::UnoControlRadioButtonModel::State
    @see com::sun::star::form::component::RadioButton::RefValue
 */
service BindableDatabaseRadioButton
{
    service com::sun::star::form::component::DatabaseRadioButton;

    /** specifies the interaction between an internal binding to a database column,
        and an external value binding.</p>
    */
    service com::sun::star::form::binding::BindableDataAwareControlModel;

    /** specifies a value which is to be associated with the control when it's <em>not</em>
        selected.

        <p>com::sun::star::form::component::RadioButton::RefValue is transferred to
        possible external value bindings as soon as the radio button is selected. With the member
        #SecondaryRefValue, clients of the radio button can also associate a value with
        the <em>not selected</em> state of the control.</p>
    */
    [property] string SecondaryRefValue;
};


}; }; }; }; };

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