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diff --git a/forms/source/xforms/model_helper.hxx b/forms/source/xforms/model_helper.hxx
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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
+ * it under the terms of the GNU Lesser General Public License version 3
+ * only, as published by the Free Software Foundation.
+ *
+ * OpenOffice.org is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * 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 _MODEL_HELPER_HXX
+#define _MODEL_HELPER_HXX
+
+//
+// some helper definitions that must be available for model.cxx and
+// model_ui.cxx
+//
+
+#include "namedcollection.hxx"
+#include "binding.hxx"
+#include "submission.hxx"
+#include "unohelper.hxx"
+
+#include <com/sun/star/uno/Reference.hxx>
+#include <com/sun/star/uno/Sequence.hxx>
+#include <com/sun/star/lang/XUnoTunnel.hpp>
+#include <com/sun/star/beans/XPropertySet.hpp>
+#include <com/sun/star/beans/PropertyValue.hpp>
+
+namespace xforms
+{
+    class Model;
+}
+
+//
+// BindingCollection
+//
+
+namespace xforms
+{
+
+class BindingCollection : public NamedCollection<com::sun::star::uno::Reference<com::sun::star::beans::XPropertySet> >
+{
+    Model* mpModel;
+
+public:
+    BindingCollection( Model* pModel ) : mpModel( pModel ) {}
+    virtual ~BindingCollection() {}
+
+    virtual bool isValid( const T& t ) const
+    {
+        return Binding::getBinding( t ) != NULL;
+    }
+
+protected:
+    virtual void _insert( const T& t )
+    {
+        OSL_ENSURE( Binding::getBinding( t ) != NULL, "invalid item?" );
+        Binding::getBinding( t )->_setModel( Binding::Model_t( mpModel ) );
+    }
+
+    virtual void _remove( const T& t )
+    {
+        OSL_ENSURE( Binding::getBinding( t ) != NULL, "invalid item?" );
+        Binding::getBinding( t )->_setModel( Binding::Model_t() );
+    }
+};
+
+
+
+//
+// SubmissionCollection
+//
+
+class SubmissionCollection : public NamedCollection<com::sun::star::uno::Reference<com::sun::star::beans::XPropertySet> >
+{
+    Model* mpModel;
+
+public:
+    SubmissionCollection( Model* pModel ) : mpModel( pModel ) {}
+    virtual ~SubmissionCollection() {}
+
+public:
+    virtual bool isValid( const T& t ) const
+    {
+        return Submission::getSubmission( t ) != NULL;
+    }
+
+protected:
+    virtual void _insert( const T& t )
+    {
+        OSL_ENSURE( Submission::getSubmission( t ) != NULL, "invalid item?" );
+        Submission::getSubmission( t )->setModel( com::sun::star::uno::Reference<com::sun::star::xforms::XModel>( mpModel ) );
+    }
+
+    virtual void _remove( const T& t )
+    {
+        OSL_ENSURE( Submission::getSubmission( t ) != NULL, "invalid item?" );
+        Submission::getSubmission( t )->setModel( com::sun::star::uno::Reference<com::sun::star::xforms::XModel>( ) );
+    }
+};
+
+
+//
+// InstanceCollection
+//
+
+class InstanceCollection : public Collection<com::sun::star::uno::Sequence<com::sun::star::beans::PropertyValue> >
+{
+public:
+    virtual bool isValid( const T& t ) const
+    {
+        const com::sun::star::beans::PropertyValue* pValues = t.getConstArray();
+        rtl::OUString sInstance( OUSTRING("Instance") );
+        sal_Bool bFound = sal_False;
+        for( sal_Int32 i = 0; ( ! bFound ) && ( i < t.getLength() ); i++ )
+        {
+            bFound |= ( pValues[i].Name == sInstance );
+        }
+        return bFound ? true : false;
+    }
+};
+
+
+//
+// helper functions
+//
+
+sal_Int32 lcl_findInstance( const InstanceCollection*,
+                            const rtl::OUString& );
+
+
+// get values from Sequence<PropertyValue> describing an Instance
+void getInstanceData(
+    const com::sun::star::uno::Sequence<com::sun::star::beans::PropertyValue>&,
+    rtl::OUString* pID,
+    com::sun::star::uno::Reference<com::sun::star::xml::dom::XDocument>*,
+    rtl::OUString* pURL,
+    bool* pURLOnce );
+
+// set values on Sequence<PropertyValue> for an Instance
+void setInstanceData(
+    com::sun::star::uno::Sequence<com::sun::star::beans::PropertyValue>&,
+    const rtl::OUString* pID,
+    const com::sun::star::uno::Reference<com::sun::star::xml::dom::XDocument>*,
+    const rtl::OUString* pURL,
+    const bool* pURLOnce );
+
+} // namespace xforms
+
+#endif