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+/*************************************************************************
+ *
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * Copyright 2000, 2010 Oracle and/or its affiliates.
+ *
+ * OpenOffice.org - a multi-platform office productivity suite
+ *
+ * This file is part of OpenOffice.org.
+ *
+ * OpenOffice.org is free software: you can redistribute it and/or modify
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+ * only, as published by the Free Software Foundation.
+ *
+ * OpenOffice.org is distributed in the hope that it will be useful,
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+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Lesser General Public License version 3 for more details
+ * (a copy is included in the LICENSE file that accompanied this code).
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * version 3 along with OpenOffice.org. If not, see
+ * <http://www.openoffice.org/license.html>
+ * for a copy of the LGPLv3 License.
+ *
+ ************************************************************************/
+
+#ifndef __com_sun_star_form_binding_BindableDataAwareControlModel_idl__
+#define __com_sun_star_form_binding_BindableDataAwareControlModel_idl__
+
+#ifndef __com_sun_star_form_DataAwareControlModel_idl__
+#include <com/sun/star/form/DataAwareControlModel.idl>
+#endif
+
+#ifndef __com_sun_star_form_binding_BindableControlModel_idl__
+#include <com/sun/star/form/binding/BindableControlModel.idl>
+#endif
+
+//=============================================================================
+
+module com { module sun { module star { module form { module binding {
+
+//=============================================================================
+
+/** is a specialization of the <type scope="com::sun::star::form">DataAwareControlModel</type>
+ which additionally supports binding to external value suppliers.
+
+ <p>Control models usually have some kind of value property, which reflects the very current
+ content of the controls associated with this model. For instance, for an
+ <type scope="com::sun::star::form::component">TextField</type>, this would be the
+ <member scope="com::sun::star::awt">UnoControlEditModel::Text</member> property of the base
+ service. Similarily, a <type scope="com::sun::star::form::component">CheckBox</type> has
+ a property <member scope="com::sun::star::awt">UnoControlCheckBoxModel::State</member>, which
+ reflects the current check state.</p>
+
+ <p>Usual <type scope="com::sun::star::form">DataAwareControlModel</type>s can be bound to
+ a column of a <type scope="com::sun::star::form::component">DataForm</type>, and exchange
+ their content with such a column.<br/>
+ In particular, when the <type scope="com::sun::star::form::component">DataForm</type>
+ is moved to a different record, then the bound control model is updated with the value of
+ it's column in this particular row.<br/>
+ On the other hand, when any change in the control model (e.g. resulting from a user entering
+ data in a control associated with the control model) is committed
+ (<member scope="com::sun::star::form">XBoundComponent::commit</member>), then the actual
+ data of the control model is written into the associated
+ <type scope="com::sun::star::form::component">DataForm</type> column.</p>
+
+ <p><type>BindableDataAwareControlModel</type>'s additionally support an alternative value
+ binding, which forces them to exchange their value with another foreign instance.
+ In some sense, they are an abstraction of the data aware control models, which only
+ support a specialized, hard-coded value binding (namely the binding to a
+ <type scope="com::sun::star::form::component">DataForm</type> column).</p>
+
+ <p>For this, they provide the <type>XBindableValue</type> interface which allows to
+ set an external component to exchange the value with.</p>
+
+ <p>The following rules apply when a data aware control model is bound to an external value binding:
+ <ul><li><b>Priority</b><br/>
+ External value bindings overrule any active SQL-column binding. If an external
+ component is bound to a control model which currently has an active SQL binding,
+ this SQL binding is suspended, until the external binding is revoked.
+ </li>
+ <li><b>Activation</b><br/>
+ An external value binding becomes effective as soon as it is set. This is a
+ difference to SQL bindings, which only are effective when the parent form
+ of the control model is loaded (<type scope="com::sun::star::form">XLoadable</type>).
+ </li>
+ <li><b>Immediacy</b><br/>
+ When a <type>BindableDataAwareControlModel</type> is bound to an external value,
+ then every change in the control model's value is <em>immediately</em> reflected
+ in the external binding. This is a difference to SQL bindings of most
+ <type scope="com::sun::star::form">DataAwareControlModel</type>'s, where changes
+ in the control model's value are only propagated to the bound column upon explicit
+ request via <member scope="com::sun::star::form">XBoundComponent::commit</member>.<br/>
+ Note that this restriction is inherited from the <type>BindableControlModel</type>.
+ </li>
+ <li><b>Cloning</b><br/>
+ <type scope="com::sun::star::form">FormControlModel</type>s support cloning themself
+ via the <type scope="com::sun::star::util">XCloneable</type> interface which they
+ inherit from the <type scope="com::sun::star::awt">UnoControlModel</type> service.</br>
+ When a <type>BindableDataAwareControlModel</type> is cloned while it has an active
+ external value binding, then the clone is also bound to the same binding instance.<br/>
+ Note that this restriction is inherited from the <type>BindableControlModel</type>.
+ </li>
+ </ul>
+ </p>
+
+ <p>When a <type>BindableDataAwareControlModel</type> is being bound to an external value,
+ using <member>XBindableValue::setValueBinding</member>,
+ then the control model (it's value property, respectively) and the external value are
+ initially synchronized by setting the external value (<member>XValueBinding::getValue</member>)
+ at the control model.</p>
+
+*/
+service BindableDataAwareControlModel
+{
+ /** specifies the functionality for binding the control model to a
+ column of an SQL <type scope="com::sun::star::form::component">DataForm</type>.
+ */
+ service com::sun::star::form::DataAwareControlModel;
+
+ /** specifies the functionality for <em>alternatively</em> binding the control model
+ to an external value.
+ */
+ service BindableControlModel;
+};
+
+//=============================================================================
+
+}; }; }; }; };
+
+#endif