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diff --git a/framework/source/layoutmanager/uielement.cxx b/framework/source/layoutmanager/uielement.cxx
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+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed
+ * with this work for additional information regarding copyright
+ * ownership. The ASF licenses this file to you under the Apache
+ * License, Version 2.0 (the "License"); you may not use this file
+ * except in compliance with the License. You may obtain a copy of
+ * the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#include <uielement/uielement.hxx>
+
+#include <com/sun/star/ui/DockingArea.hpp>
+
+using namespace ::com::sun::star;
+
+namespace framework
+{
+
+ bool UIElement::operator< ( const ::framework::UIElement& aUIElement ) const
+{
+ if ( !m_xUIElement.is() && aUIElement.m_xUIElement.is() )
+ return false;
+ else if ( m_xUIElement.is() && !aUIElement.m_xUIElement.is() )
+ return true;
+ else if ( !m_bVisible && aUIElement.m_bVisible )
+ return false;
+ else if ( m_bVisible && !aUIElement.m_bVisible )
+ return true;
+ else if ( !m_bFloating && aUIElement.m_bFloating )
+ return true;
+ else if ( m_bFloating && !aUIElement.m_bFloating )
+ return false;
+ else
+ {
+ if ( m_bFloating )
+ {
+ bool bEqual = ( m_aFloatingData.m_aPos.Y == aUIElement.m_aFloatingData.m_aPos.Y );
+ if ( bEqual )
+ return ( m_aFloatingData.m_aPos.X < aUIElement.m_aFloatingData.m_aPos.X );
+ else
+ return ( m_aFloatingData.m_aPos.Y < aUIElement.m_aFloatingData.m_aPos.Y );
+ }
+ else
+ {
+ if ( m_aDockedData.m_nDockedArea < aUIElement.m_aDockedData.m_nDockedArea )
+ return true;
+ else if ( m_aDockedData.m_nDockedArea > aUIElement.m_aDockedData.m_nDockedArea )
+ return false;
+ else
+ {
+ if ( m_aDockedData.m_nDockedArea == ui::DockingArea_DOCKINGAREA_TOP ||
+ m_aDockedData.m_nDockedArea == ui::DockingArea_DOCKINGAREA_BOTTOM )
+ {
+ if ( m_aDockedData.m_aPos.Y != aUIElement.m_aDockedData.m_aPos.Y )
+ return ( m_aDockedData.m_aPos.Y < aUIElement.m_aDockedData.m_aPos.Y );
+ else
+ {
+ bool bEqual = ( m_aDockedData.m_aPos.X == aUIElement.m_aDockedData.m_aPos.X );
+ if ( bEqual )
+ {
+ return m_bUserActive && !aUIElement.m_bUserActive;
+ }
+ else
+ return ( m_aDockedData.m_aPos.X <= aUIElement.m_aDockedData.m_aPos.X );
+ }
+ }
+ else
+ {
+ if ( m_aDockedData.m_aPos.X != aUIElement.m_aDockedData.m_aPos.X )
+ return ( m_aDockedData.m_aPos.X < aUIElement.m_aDockedData.m_aPos.X );
+ else
+ {
+ bool bEqual = ( m_aDockedData.m_aPos.Y == aUIElement.m_aDockedData.m_aPos.Y );
+ if ( bEqual )
+ {
+ return m_bUserActive && !aUIElement.m_bUserActive;
+ }
+ else
+ return ( m_aDockedData.m_aPos.Y <= aUIElement.m_aDockedData.m_aPos.Y );
+ }
+ }
+ }
+ }
+ }
+}
+
+} // namespace framework
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */