Adding upstream version 4:7.4.7.upstream/4%7.4.7upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 786 insertions, 0 deletions

diff --git a/extensions/source/propctrlr/composeduiupdate.cxx b/extensions/source/propctrlr/composeduiupdate.cxx
new file mode 100644
index 000000000..0e32ef19a
--- /dev/null
+++ b/extensions/source/propctrlr/composeduiupdate.cxx
@@ -0,0 +1,786 @@
+/* -*- 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 "composeduiupdate.hxx"
+#include "pcrcommon.hxx"
+
+#include <com/sun/star/inspection/XObjectInspectorUI.hpp>
+#include <com/sun/star/lang/DisposedException.hpp>
+#include <com/sun/star/lang/NullPointerException.hpp>
+#include <com/sun/star/inspection/PropertyLineElement.hpp>
+#include <osl/diagnose.h>
+#include <osl/mutex.hxx>
+#include <rtl/ref.hxx>
+#include <cppuhelper/implbase.hxx>
+
+#include <algorithm>
+#include <map>
+#include <set>
+
+
+namespace pcr
+{
+
+
+    using ::com::sun::star::lang::DisposedException;
+    using ::com::sun::star::lang::NullPointerException;
+    using ::com::sun::star::inspection::XPropertyHandler;
+    using ::com::sun::star::uno::Reference;
+    using ::com::sun::star::inspection::XObjectInspectorUI;
+    using ::com::sun::star::inspection::XPropertyControl;
+    using ::com::sun::star::inspection::XPropertyControlObserver;
+
+    namespace PropertyLineElement = ::com::sun::star::inspection::PropertyLineElement;
+
+    namespace
+    {
+        struct HandlerLess
+        {
+            bool operator()( const Reference< XPropertyHandler >& lhs, const Reference< XPropertyHandler >& rhs) const
+            {
+                return lhs.get() < rhs.get();
+            }
+        };
+
+
+        typedef std::set< OUString >       StringBag;
+        typedef std::map< sal_Int16, StringBag >  MapIntToStringBag;
+    }
+
+
+    // callbacks for CachedInspectorUI
+
+    typedef void (ComposedPropertyUIUpdate::*FNotifySingleUIChange)();
+
+    typedef ::cppu::WeakImplHelper <   css::inspection::XObjectInspectorUI
+                                    >   CachedInspectorUI_Base;
+
+    namespace {
+
+    struct CachedInspectorUI : public CachedInspectorUI_Base
+    {
+    private:
+        ::osl::Mutex            m_aMutex;
+        bool                    m_bDisposed;
+        ComposedPropertyUIUpdate&
+                                m_rMaster;
+        FNotifySingleUIChange   m_pUIChangeNotification;
+
+        // enablePropertyUI cache
+        StringBag               aEnabledProperties;
+        StringBag               aDisabledProperties;
+
+        // show/hidePropertyUI cache
+        StringBag               aShownProperties;
+        StringBag               aHiddenProperties;
+
+        // rebuildPropertyUI cache
+        StringBag               aRebuiltProperties;
+
+        // showCategory cache
+        StringBag               aShownCategories;
+        StringBag               aHiddenCategories;
+
+        // enablePropertyUIElements cache
+        MapIntToStringBag       aEnabledElements;
+        MapIntToStringBag       aDisabledElements;
+
+    public:
+        typedef StringBag& (CachedInspectorUI::*FGetStringBag)();
+
+        // enablePropertyUI cache
+        StringBag&  getEnabledProperties()          { return aEnabledProperties; }
+        StringBag&  getDisabledProperties()         { return aDisabledProperties; }
+
+        // show/hidePropertyUI cache
+        StringBag&  getShownProperties()            { return aShownProperties; }
+        StringBag&  getHiddenProperties()           { return aHiddenProperties; }
+
+        // rebuildPropertyUI cache
+        StringBag&  getRebuiltProperties()          { return aRebuiltProperties; }
+
+        // showCategory cache
+        StringBag&  getShownCategories()            { return aShownCategories; }
+        StringBag&  getHiddenCategories()           { return aHiddenCategories; }
+
+        // enablePropertyUIElements
+        StringBag&  getEnabledInputControls()       { return aEnabledElements[ PropertyLineElement::InputControl ]; }
+        StringBag&  getDisabledInputControls()      { return aDisabledElements[ PropertyLineElement::InputControl ]; }
+        StringBag&  getEnabledPrimaryButtons()      { return aEnabledElements[ PropertyLineElement::PrimaryButton ]; }
+        StringBag&  getDisabledPrimaryButtons()     { return aDisabledElements[ PropertyLineElement::PrimaryButton ]; }
+        StringBag&  getEnabledSecondaryButtons()    { return aEnabledElements[ PropertyLineElement::SecondaryButton ]; }
+        StringBag&  getDisabledSecondaryButtons()   { return aDisabledElements[ PropertyLineElement::SecondaryButton ]; }
+
+    public:
+        CachedInspectorUI( ComposedPropertyUIUpdate& _rMaster, FNotifySingleUIChange _pUIChangeNotification );
+        CachedInspectorUI(const CachedInspectorUI&) = delete;
+        CachedInspectorUI& operator=(const CachedInspectorUI&) = delete;
+
+        /// disposes the instance
+        void dispose();
+
+        // XObjectInspectorUI overridables
+        virtual void SAL_CALL enablePropertyUI( const OUString& _rPropertyName, sal_Bool _bEnable ) override;
+        virtual void SAL_CALL enablePropertyUIElements( const OUString& _rPropertyName, ::sal_Int16 _nElements, sal_Bool _bEnable ) override;
+        virtual void SAL_CALL rebuildPropertyUI( const OUString& _rPropertyName ) override;
+        virtual void SAL_CALL showPropertyUI( const OUString& _rPropertyName ) override;
+        virtual void SAL_CALL hidePropertyUI( const OUString& _rPropertyName ) override;
+        virtual void SAL_CALL showCategory( const OUString& _rCategory, sal_Bool _bShow ) override;
+        virtual Reference< XPropertyControl > SAL_CALL getPropertyControl( const OUString& _rPropertyName ) override;
+        virtual void SAL_CALL registerControlObserver( const Reference< XPropertyControlObserver >& Observer ) override;
+        virtual void SAL_CALL revokeControlObserver( const Reference< XPropertyControlObserver >& Observer ) override;
+        virtual void SAL_CALL setHelpSectionText( const OUString& HelpText ) override;
+
+    protected:
+        virtual ~CachedInspectorUI() override;
+
+        /// throws an exception if the component is already disposed
+        void checkDisposed() const;
+
+    private:
+        void    impl_markElementEnabledOrDisabled( const OUString& _rPropertyName, sal_Int16 _nElementIdOrZero, bool _bEnable );
+
+        /** calls <member>m_pUIChangeNotification</member> at <member>m_rMaster</member>
+        */
+        void    impl_notifySingleUIChange() const;
+
+    private:
+        class MethodGuard;
+        friend class MethodGuard;
+        class MethodGuard : public ::osl::MutexGuard
+        {
+        public:
+            explicit MethodGuard( CachedInspectorUI& rInstance )
+                : ::osl::MutexGuard( rInstance.m_aMutex )
+            {
+                rInstance.checkDisposed();
+            }
+        };
+    };
+
+    }
+
+    CachedInspectorUI::CachedInspectorUI( ComposedPropertyUIUpdate& _rMaster, FNotifySingleUIChange _pUIChangeNotification )
+        :m_bDisposed( false )
+        ,m_rMaster( _rMaster )
+        ,m_pUIChangeNotification( _pUIChangeNotification )
+    {
+    }
+
+
+    CachedInspectorUI::~CachedInspectorUI()
+    {
+    }
+
+
+    void CachedInspectorUI::dispose()
+    {
+        ::osl::MutexGuard aGuard( m_aMutex );
+        m_bDisposed = true;
+
+        clearContainer( aEnabledProperties );
+        clearContainer( aDisabledProperties );
+        clearContainer( aRebuiltProperties );
+        clearContainer( aShownProperties );
+        clearContainer( aHiddenProperties );
+        clearContainer( aShownCategories );
+        clearContainer( aHiddenCategories );
+        clearContainer( aEnabledElements );
+        clearContainer( aDisabledElements );
+    }
+
+
+    void CachedInspectorUI::checkDisposed() const
+    {
+        if (m_bDisposed)
+            throw DisposedException();
+    }
+
+
+    namespace
+    {
+        void lcl_markStringKeyPositiveOrNegative( const OUString& _rKeyName, StringBag& _rPositives, StringBag& _rNegatives, bool _bMarkPositive )
+        {
+            if ( _bMarkPositive )
+            {
+                _rPositives.insert( _rKeyName );
+                // if the same key has been remember as in the "negative" list before, clear this information, since it's overruled
+                _rNegatives.erase( _rKeyName );
+            }
+            else
+                _rNegatives.insert( _rKeyName );
+        }
+    }
+
+
+    void CachedInspectorUI::enablePropertyUI( const OUString& _rPropertyName, sal_Bool _bEnable )
+    {
+        MethodGuard aGuard( *this );
+        if ( !m_rMaster.shouldContinuePropertyHandling( _rPropertyName ) )
+            return;
+
+        lcl_markStringKeyPositiveOrNegative( _rPropertyName, aEnabledProperties, aDisabledProperties, _bEnable );
+        impl_notifySingleUIChange();
+    }
+
+
+    void CachedInspectorUI::impl_markElementEnabledOrDisabled( const OUString& _rPropertyName, sal_Int16 _nElementIdOrZero, bool _bEnable )
+    {
+        if ( _nElementIdOrZero == 0 )
+            return;
+
+        lcl_markStringKeyPositiveOrNegative(
+            _rPropertyName,
+            aEnabledElements[ _nElementIdOrZero ],
+            aDisabledElements[ _nElementIdOrZero ],
+            _bEnable
+        );
+    }
+
+
+    void CachedInspectorUI::impl_notifySingleUIChange() const
+    {
+        (m_rMaster.*m_pUIChangeNotification)();
+    }
+
+
+    void CachedInspectorUI::enablePropertyUIElements( const OUString& _rPropertyName, sal_Int16 _nElements, sal_Bool _bEnable )
+    {
+        MethodGuard aGuard( *this );
+        if ( !m_rMaster.shouldContinuePropertyHandling( _rPropertyName ) )
+            return;
+
+        impl_markElementEnabledOrDisabled( _rPropertyName, _nElements & PropertyLineElement::InputControl,    _bEnable );
+        impl_markElementEnabledOrDisabled( _rPropertyName, _nElements & PropertyLineElement::PrimaryButton,   _bEnable );
+        impl_markElementEnabledOrDisabled( _rPropertyName, _nElements & PropertyLineElement::SecondaryButton, _bEnable );
+
+        impl_notifySingleUIChange();
+    }
+
+
+    void CachedInspectorUI::rebuildPropertyUI( const OUString& _rPropertyName )
+    {
+        MethodGuard aGuard( *this );
+        if ( !m_rMaster.shouldContinuePropertyHandling( _rPropertyName ) )
+            return;
+
+        aRebuiltProperties.insert( _rPropertyName );
+
+        impl_notifySingleUIChange();
+    }
+
+
+    void CachedInspectorUI::showPropertyUI( const OUString& _rPropertyName )
+    {
+        MethodGuard aGuard( *this );
+        if ( !m_rMaster.shouldContinuePropertyHandling( _rPropertyName ) )
+            return;
+
+        aShownProperties.insert( _rPropertyName );
+        // if the same category has been hidden before, clear this information, since it's overruled
+        aHiddenProperties.erase( _rPropertyName );
+
+        impl_notifySingleUIChange();
+    }
+
+
+    void CachedInspectorUI::hidePropertyUI( const OUString& _rPropertyName )
+    {
+        MethodGuard aGuard( *this );
+        if ( !m_rMaster.shouldContinuePropertyHandling( _rPropertyName ) )
+            return;
+
+        aHiddenProperties.insert( _rPropertyName );
+        impl_notifySingleUIChange();
+    }
+
+
+    void CachedInspectorUI::showCategory( const OUString& _rCategory, sal_Bool _bShow )
+    {
+        MethodGuard aGuard( *this );
+
+        lcl_markStringKeyPositiveOrNegative( _rCategory, aShownCategories, aHiddenCategories, _bShow );
+        impl_notifySingleUIChange();
+    }
+
+
+    Reference< XPropertyControl > SAL_CALL CachedInspectorUI::getPropertyControl( const OUString& _rPropertyName )
+    {
+        MethodGuard aGuard( *this );
+        if ( !m_rMaster.shouldContinuePropertyHandling( _rPropertyName ) )
+            return Reference< XPropertyControl >();
+
+        return m_rMaster.getDelegatorUI()->getPropertyControl( _rPropertyName );
+    }
+
+
+    void SAL_CALL CachedInspectorUI::registerControlObserver( const Reference< XPropertyControlObserver >& Observer )
+    {
+        OSL_FAIL( "CachedInspectorUI::registerControlObserver: not expected to be called!" );
+            // CachedInspectorUI is used as context for the controls, and we don't expect them to
+            // register listeners themself
+        m_rMaster.getDelegatorUI()->registerControlObserver( Observer );
+    }
+
+
+    void SAL_CALL CachedInspectorUI::revokeControlObserver( const Reference< XPropertyControlObserver >& Observer )
+    {
+        OSL_FAIL( "CachedInspectorUI::revokeControlObserver: not expected to be called!" );
+            // CachedInspectorUI is used as context for the controls, and we don't expect them to
+            // register listeners themself
+        m_rMaster.getDelegatorUI()->revokeControlObserver( Observer );
+    }
+
+
+    void SAL_CALL CachedInspectorUI::setHelpSectionText( const OUString& HelpText )
+    {
+        m_rMaster.getDelegatorUI()->setHelpSectionText( HelpText );
+    }
+
+
+    // HandlerMap
+
+    typedef std::map  <   Reference< XPropertyHandler >
+                        ,   ::rtl::Reference< CachedInspectorUI >
+                        ,   HandlerLess
+                        >   ImplMapHandlerToUI;
+    struct MapHandlerToUI
+    {
+        ImplMapHandlerToUI aHandlers;
+    };
+
+    ComposedPropertyUIUpdate::ComposedPropertyUIUpdate( const Reference< XObjectInspectorUI >& _rxDelegatorUI,
+        IPropertyExistenceCheck* _pPropertyCheck )
+        :m_pCollectedUIs( new MapHandlerToUI )
+        ,m_xDelegatorUI( _rxDelegatorUI )
+        ,m_nSuspendCounter( 0 )
+        ,m_pPropertyCheck( _pPropertyCheck )
+    {
+        if ( !m_xDelegatorUI.is() )
+            throw NullPointerException();
+    }
+
+
+    ComposedPropertyUIUpdate::~ComposedPropertyUIUpdate( )
+    {
+    }
+
+
+    Reference< XObjectInspectorUI > ComposedPropertyUIUpdate::getUIForPropertyHandler( const Reference< XPropertyHandler >& _rxHandler )
+    {
+        impl_checkDisposed();
+
+        ::rtl::Reference< CachedInspectorUI >& rUI = m_pCollectedUIs->aHandlers[ _rxHandler ];
+        if ( !rUI.is() )
+            rUI = new CachedInspectorUI( *this, &ComposedPropertyUIUpdate::callback_inspectorUIChanged_throw );
+        return rUI;
+    }
+
+
+    namespace
+    {
+
+        // an STL-compatible structure which collects strings from a CachedInspectorUI instances
+        struct StringBagCollector
+        {
+        private:
+            StringBag&                      m_rBag;
+            CachedInspectorUI::FGetStringBag  m_pGetter;
+
+        public:
+            StringBagCollector( StringBag& _rBag, CachedInspectorUI::FGetStringBag _pGetter ) :m_rBag( _rBag ), m_pGetter( _pGetter ) { }
+
+            void operator()( const ImplMapHandlerToUI::value_type& _rUI )
+            {
+                StringBag& rBag( ((_rUI.second.get())->*m_pGetter)() );
+                m_rBag.insert( rBag.begin(), rBag.end() );
+            }
+
+            static void collectAll( StringBag& _rAll, const ImplMapHandlerToUI& _rMap, CachedInspectorUI::FGetStringBag _pGetter )
+            {
+                std::for_each( _rMap.begin(), _rMap.end(), StringBagCollector( _rAll, _pGetter ) );
+            }
+        };
+
+
+        // an STL-compatible structure which cleans a certain string bag in a CachedInspectorUI instances
+        struct StringBagClearer
+        {
+        private:
+            CachedInspectorUI::FGetStringBag  m_pGetter;
+
+        public:
+            explicit StringBagClearer( CachedInspectorUI::FGetStringBag _pGetter ) :m_pGetter( _pGetter ) { }
+
+            void operator()( const ImplMapHandlerToUI::value_type& _rUI )
+            {
+                clearContainer( ((_rUI.second.get())->*m_pGetter)() );
+            }
+
+            static void clearAll( const ImplMapHandlerToUI& _rMap, CachedInspectorUI::FGetStringBag _pGetter )
+            {
+                std::for_each( _rMap.begin(), _rMap.end(), StringBagClearer( _pGetter ) );
+            }
+        };
+
+        // a typedef for a ->XObjectInspectorUI member function taking a string
+        typedef void ( SAL_CALL XObjectInspectorUI::*FPropertyUISetter )( const OUString& );
+
+
+        // an STL-compatible struct which calls a certain member method (taking a string) at a
+        //    given ->XObjectInspectorUI instance
+        struct PropertyUIOperator
+        {
+        private:
+            Reference< XObjectInspectorUI > m_xUpdater;
+            FPropertyUISetter               m_pSetter;
+
+        public:
+            PropertyUIOperator( const Reference< XObjectInspectorUI >& _rxInspectorUI, FPropertyUISetter _pSetter )
+                :m_xUpdater( _rxInspectorUI )
+                ,m_pSetter( _pSetter )
+            {
+            }
+
+            void operator()( const OUString& _rPropertyName )
+            {
+                ((m_xUpdater.get())->*m_pSetter)( _rPropertyName );
+            }
+
+            static void forEach( const StringBag& _rProperties, const Reference< XObjectInspectorUI >& _rxDelegatorUI, FPropertyUISetter _pSetter )
+            {
+                std::for_each( _rProperties.begin(), _rProperties.end(), PropertyUIOperator( _rxDelegatorUI, _pSetter ) );
+            }
+        };
+
+
+        // an interface which encapsulates access to a single aspect of the ->XObjectInspectorUI,
+        //    where this aspect is given by a string key, and has a boolean value.
+        class IStringKeyBooleanUIUpdate
+        {
+        public:
+            virtual void updateUIForKey( const OUString& _rKey, bool _bFlag ) const = 0;
+
+            virtual ~IStringKeyBooleanUIUpdate() { }
+        };
+
+
+        // FPropertyUIFlagSetter
+
+        /** an implementation of the ->IStringKeyBooleanUIUpdate interface which,
+            for a fixed ->XObjectInspectorUI instance and a fixed UI element (->PropertyLineElement),
+            updates this element for a given property with a given boolean flag
+            (->XObjectInspectorUI::enablePropertyUIElements)
+        */
+        class EnablePropertyUIElement : public IStringKeyBooleanUIUpdate
+        {
+        private:
+            Reference< XObjectInspectorUI > m_xUIUpdate;
+            sal_Int16                       m_nElement;
+
+        public:
+            EnablePropertyUIElement( const Reference< XObjectInspectorUI >& _rxUIUpdate, sal_Int16 _nElement )
+                :m_xUIUpdate( _rxUIUpdate )
+                ,m_nElement( _nElement )
+            {
+            }
+            // IStringKeyBooleanUIUpdate
+            virtual void updateUIForKey( const OUString& _rKey, bool _bFlag ) const override;
+        };
+
+
+        void EnablePropertyUIElement::updateUIForKey( const OUString& _rKey, bool _bFlag ) const
+        {
+            m_xUIUpdate->enablePropertyUIElements( _rKey, m_nElement, _bFlag );
+        }
+
+
+        // a ->XObjectInspectorUI method taking a string and a boolean
+        typedef void ( SAL_CALL XObjectInspectorUI::*FPropertyUIFlagSetter )( const OUString&, sal_Bool );
+
+
+        // an implementation of the ->IStringKeyBooleanUIUpdate interface which calls
+        // an arbitrary ->XObjectInspectorUI method taking a string and a boolean flag
+        class DefaultStringKeyBooleanUIUpdate : public IStringKeyBooleanUIUpdate
+        {
+        private:
+            Reference< XObjectInspectorUI > m_xUIUpdate;
+            FPropertyUIFlagSetter           m_pSetter;
+
+        public:
+            DefaultStringKeyBooleanUIUpdate( const Reference< XObjectInspectorUI >& _rxUIUpdate, FPropertyUIFlagSetter _pSetter );
+            // IStringKeyBooleanUIUpdate
+            virtual void updateUIForKey( const OUString& _rKey, bool _bFlag ) const override;
+        };
+
+
+        DefaultStringKeyBooleanUIUpdate::DefaultStringKeyBooleanUIUpdate( const Reference< XObjectInspectorUI >& _rxUIUpdate, FPropertyUIFlagSetter _pSetter )
+            :m_xUIUpdate( _rxUIUpdate )
+            ,m_pSetter( _pSetter )
+        {
+        }
+
+
+        void DefaultStringKeyBooleanUIUpdate::updateUIForKey( const OUString& _rKey, bool _bFlag ) const
+        {
+            ((m_xUIUpdate.get())->*m_pSetter)( _rKey, _bFlag );
+        }
+
+
+        // an STL-compatible structure which applies a ->IStringKeyBooleanUIUpdate::updateUIForKey
+        // operation with a fixed boolean value, for a given string value
+        struct BooleanUIAspectUpdate
+        {
+        private:
+            const IStringKeyBooleanUIUpdate&    m_rUpdater;
+            bool                            m_bFlag;
+
+        public:
+            BooleanUIAspectUpdate( const IStringKeyBooleanUIUpdate& _rUpdater, bool _bFlag )
+                :m_rUpdater( _rUpdater )
+                ,m_bFlag( _bFlag )
+            {
+            }
+
+            void operator()( const OUString& _rPropertyName )
+            {
+                m_rUpdater.updateUIForKey( _rPropertyName, m_bFlag );
+            }
+
+            static void forEach( const StringBag& _rProperties, const IStringKeyBooleanUIUpdate& _rUpdater, bool _bFlag )
+            {
+                std::for_each( _rProperties.begin(), _rProperties.end(), BooleanUIAspectUpdate( _rUpdater, _bFlag ) );
+            }
+        };
+
+
+        // BooleanUIAspectUpdate
+
+        // an STL-compatible structure subtracting a given string from a fixed ->StringBag
+        struct StringBagComplement
+        {
+        private:
+            StringBag&  m_rMinuend;
+
+        public:
+            explicit StringBagComplement( StringBag& _rMinuend ) :m_rMinuend( _rMinuend ) { }
+
+            void operator()( const OUString& _rPropertyToSubtract )
+            {
+                m_rMinuend.erase( _rPropertyToSubtract );
+            }
+
+            static void subtract( StringBag& _rMinuend, const StringBag& _rSubtrahend )
+            {
+                std::for_each( _rSubtrahend.begin(), _rSubtrahend.end(), StringBagComplement( _rMinuend ) );
+            }
+        };
+
+
+        // BooleanUIAspectUpdate
+
+        void lcl_fireUIStateFlag(
+                const IStringKeyBooleanUIUpdate& _rUIUpdate,
+                const ImplMapHandlerToUI& _rHandlerUIs,
+                CachedInspectorUI::FGetStringBag _pGetPositives,
+                CachedInspectorUI::FGetStringBag _pGetNegatives
+            )
+        {
+            // all strings which are in the "positive" list of one handler
+            StringBag aAllPositives;
+            StringBagCollector::collectAll( aAllPositives, _rHandlerUIs, _pGetPositives );
+
+            // all strings which are in the "negative" list of one handler
+            StringBag aAllNegatives;
+            StringBagCollector::collectAll( aAllNegatives, _rHandlerUIs, _pGetNegatives );
+
+            // propagate the "negative" flags to the delegator UI
+            BooleanUIAspectUpdate::forEach( aAllNegatives, _rUIUpdate, false );
+
+            // propagate the "positive" flags to the delegator UI, for all elements where _no_
+            // "negative" flag exists
+            StringBagComplement::subtract( aAllPositives, aAllNegatives );
+            BooleanUIAspectUpdate::forEach( aAllPositives, _rUIUpdate, true );
+
+            // the "positive" request can be cleared no, only negative requests
+            // (such as "disable a property" or "hide a category") need to be preserved for the next round
+            StringBagClearer::clearAll( _rHandlerUIs, _pGetPositives );
+        }
+    }
+
+
+    void ComposedPropertyUIUpdate::impl_fireEnablePropertyUI_throw()
+    {
+        lcl_fireUIStateFlag(
+            DefaultStringKeyBooleanUIUpdate( m_xDelegatorUI, &XObjectInspectorUI::enablePropertyUI ),
+            m_pCollectedUIs->aHandlers,
+            &CachedInspectorUI::getEnabledProperties,
+            &CachedInspectorUI::getDisabledProperties
+        );
+    }
+
+
+    void ComposedPropertyUIUpdate::impl_fireRebuildPropertyUI_throw()
+    {
+        // collect all properties for which a rebuild request has been made
+        StringBag aAllRebuilt;
+        StringBagCollector::collectAll( aAllRebuilt, m_pCollectedUIs->aHandlers, &CachedInspectorUI::getRebuiltProperties );
+
+        // rebuild all those properties
+        PropertyUIOperator::forEach( aAllRebuilt, m_xDelegatorUI, &XObjectInspectorUI::rebuildPropertyUI );
+
+        // clear the "properties to rebuild" at all handlers, since the request has been fulfilled now.
+        StringBagClearer::clearAll( m_pCollectedUIs->aHandlers, &CachedInspectorUI::getRebuiltProperties );
+    }
+
+
+    void ComposedPropertyUIUpdate::impl_fireShowHidePropertyUI_throw()
+    {
+        // all properties which have been shown by at least one handler
+        StringBag aAllShown;
+        StringBagCollector::collectAll( aAllShown, m_pCollectedUIs->aHandlers, &CachedInspectorUI::getShownProperties );
+        // all properties which have been hidden by at least one handler
+        StringBag aAllHidden;
+        StringBagCollector::collectAll( aAllHidden, m_pCollectedUIs->aHandlers, &CachedInspectorUI::getHiddenProperties );
+
+        // hide properties as necessary
+        PropertyUIOperator::forEach( aAllHidden, m_xDelegatorUI, &XObjectInspectorUI::hidePropertyUI );
+
+        // for those properties which are hidden, ignore all "show" requests which other handlers might have had
+        StringBagComplement::subtract( aAllShown, aAllHidden );
+
+        // show properties
+        PropertyUIOperator::forEach( aAllShown, m_xDelegatorUI, &XObjectInspectorUI::showPropertyUI );
+    }
+
+
+    void ComposedPropertyUIUpdate::impl_fireShowCategory_throw()
+    {
+        lcl_fireUIStateFlag(
+            DefaultStringKeyBooleanUIUpdate( m_xDelegatorUI, &XObjectInspectorUI::showCategory ),
+            m_pCollectedUIs->aHandlers,
+            &CachedInspectorUI::getShownCategories,
+            &CachedInspectorUI::getHiddenCategories
+        );
+    }
+
+
+    void ComposedPropertyUIUpdate::impl_fireEnablePropertyUIElements_throw()
+    {
+        lcl_fireUIStateFlag(
+            EnablePropertyUIElement( m_xDelegatorUI, PropertyLineElement::InputControl ),
+            m_pCollectedUIs->aHandlers,
+            &CachedInspectorUI::getEnabledInputControls,
+            &CachedInspectorUI::getDisabledInputControls
+        );
+
+        lcl_fireUIStateFlag(
+            EnablePropertyUIElement( m_xDelegatorUI, PropertyLineElement::PrimaryButton ),
+            m_pCollectedUIs->aHandlers,
+            &CachedInspectorUI::getEnabledPrimaryButtons,
+            &CachedInspectorUI::getDisabledPrimaryButtons
+        );
+
+        lcl_fireUIStateFlag(
+            EnablePropertyUIElement( m_xDelegatorUI, PropertyLineElement::SecondaryButton ),
+            m_pCollectedUIs->aHandlers,
+            &CachedInspectorUI::getEnabledSecondaryButtons,
+            &CachedInspectorUI::getDisabledSecondaryButtons
+        );
+    }
+
+
+    void ComposedPropertyUIUpdate::impl_fireAll_throw()
+    {
+        OSL_PRECOND( !impl_isDisposed(), "ComposedPropertyUIUpdate::impl_fireAll_throw: already disposed, this will crash!" );
+
+        impl_fireEnablePropertyUI_throw();
+        impl_fireShowHidePropertyUI_throw();
+        impl_fireRebuildPropertyUI_throw();
+        impl_fireShowCategory_throw();
+        impl_fireEnablePropertyUIElements_throw();
+    }
+
+
+    void ComposedPropertyUIUpdate::suspendAutoFire()
+    {
+        impl_checkDisposed();
+        osl_atomic_increment( &m_nSuspendCounter );
+    }
+
+
+    void ComposedPropertyUIUpdate::resumeAutoFire()
+    {
+        impl_checkDisposed();
+        if ( 0 == osl_atomic_decrement( &m_nSuspendCounter ) )
+            impl_fireAll_throw();
+    }
+
+
+    void ComposedPropertyUIUpdate::impl_checkDisposed() const
+    {
+        if ( impl_isDisposed() )
+            throw DisposedException();
+    }
+
+
+    void ComposedPropertyUIUpdate::callback_inspectorUIChanged_throw()
+    {
+        if ( 0 == m_nSuspendCounter )
+            impl_fireAll_throw();
+    }
+
+
+    Reference< XObjectInspectorUI > const & ComposedPropertyUIUpdate::getDelegatorUI() const
+    {
+        impl_checkDisposed();
+        return m_xDelegatorUI;
+    }
+
+
+    void ComposedPropertyUIUpdate::dispose()
+    {
+        if ( impl_isDisposed() )
+            return;
+
+        OSL_ENSURE( m_nSuspendCounter == 0, "ComposedPropertyUIUpdate::dispose: still suspended, the changes will be lost!" );
+
+        for (auto const& singleUI : m_pCollectedUIs->aHandlers)
+        {
+            singleUI.second->dispose();
+        }
+        m_pCollectedUIs.reset();
+        m_xDelegatorUI.set( nullptr );
+    }
+
+
+    bool ComposedPropertyUIUpdate::shouldContinuePropertyHandling( const OUString& _rName ) const
+    {
+        if ( !m_pPropertyCheck )
+            return true;
+        if ( m_pPropertyCheck->hasPropertyByName( _rName ) )
+            return true;
+        return false;
+    }
+
+
+} // namespace pcr
+
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */