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| -rw-r--r-- | forms/source/inc/formnavigation.hxx | 217 |
1 files changed, 217 insertions, 0 deletions
diff --git a/forms/source/inc/formnavigation.hxx b/forms/source/inc/formnavigation.hxx new file mode 100644 index 000000000..e18b99a1b --- /dev/null +++ b/forms/source/inc/formnavigation.hxx @@ -0,0 +1,217 @@ +/* -*- 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 . + */ + +#pragma once + +#include <com/sun/star/frame/XDispatchProviderInterception.hpp> +#include <com/sun/star/frame/XStatusListener.hpp> +#include <com/sun/star/uno/XComponentContext.hpp> +#include <cppuhelper/implbase2.hxx> +#include "featuredispatcher.hxx" +#include <vector> +#include <map> +#include <memory> + + +namespace frm +{ + + + class UrlTransformer; + class ControlFeatureInterception; + + + //= OFormNavigationHelper + + typedef ::cppu::ImplHelper2 < css::frame::XDispatchProviderInterception + , css::frame::XStatusListener + > OFormNavigationHelper_Base; + + class OFormNavigationHelper + :public OFormNavigationHelper_Base + ,public IFeatureDispatcher + { + private: + struct FeatureInfo + { + css::util::URL aURL; + css::uno::Reference< css::frame::XDispatch > xDispatcher; + bool bCachedState; + css::uno::Any aCachedAdditionalState; + + FeatureInfo() : bCachedState( false ) { } + }; + typedef ::std::map< sal_Int16, FeatureInfo > FeatureMap; + + private: + css::uno::Reference< css::uno::XComponentContext > + m_xORB; + ::std::unique_ptr< ControlFeatureInterception > + m_pFeatureInterception; + + // all supported features + FeatureMap m_aSupportedFeatures; + // all features which we have an external dispatcher for + sal_Int32 m_nConnectedFeatures; + + protected: + OFormNavigationHelper( const css::uno::Reference< css::uno::XComponentContext >& _rxORB ); + virtual ~OFormNavigationHelper(); + + // XComponent + /// @throws css::uno::RuntimeException + void dispose( ); + + // XDispatchProviderInterception + virtual void SAL_CALL registerDispatchProviderInterceptor( const css::uno::Reference< css::frame::XDispatchProviderInterceptor >& Interceptor ) override; + virtual void SAL_CALL releaseDispatchProviderInterceptor( const css::uno::Reference< css::frame::XDispatchProviderInterceptor >& Interceptor ) override; + + // XStatusListener + virtual void SAL_CALL statusChanged( const css::frame::FeatureStateEvent& State ) override; + + // XEventListener + virtual void SAL_CALL disposing( const css::lang::EventObject& Source ) override; + + // IFeatureDispatcher + virtual void dispatch( sal_Int16 _nFeatureId ) const override; + virtual void dispatchWithArgument( sal_Int16 _nFeatureId, const char* _pParamName, const css::uno::Any& _rParamValue ) const override; + virtual bool isEnabled( sal_Int16 _nFeatureId ) const override; + virtual bool getBooleanState( sal_Int16 _nFeatureId ) const override; + virtual OUString getStringState( sal_Int16 _nFeatureId ) const override; + virtual sal_Int32 getIntegerState( sal_Int16 _nFeatureId ) const override; + + // own overridables + /** is called when the interceptors have. + <p>The default implementations simply calls <member>updateDispatches</member>, + derived classes can prevent this in certain cases, or do additional handling.</p> + */ + virtual void interceptorsChanged( ); + + /** called when the status of a feature changed + + <p>The default implementation does nothing.</p> + + <p>If the feature in question does support more state information that just the + enabled/disabled state, then this additional information is to be retrieved in + a separate call.</p> + + @param _nFeatureId + the id of the feature + @param _bEnabled + determines if the features is enabled or disabled + @see getBooleanState + */ + virtual void featureStateChanged( sal_Int16 _nFeatureId, bool _bEnabled ); + + /** notification for (potential) changes in the state of all features + <p>The base class implementation does nothing. Derived classes could force + their peer to update it's state, depending on the result of calls to + <member>IFeatureDispatcher::isEnabled</member>.</p> + */ + virtual void allFeatureStatesChanged( ); + + /** retrieves the list of supported features + <p>To be overridden by derived classes</p> + @param _rFeatureIds + the array of features to support. Out parameter to fill by the derivee's implementation + @pure + */ + virtual void getSupportedFeatures( ::std::vector< sal_Int16 >& /* [out] */ _rFeatureIds ) = 0; + + protected: + /** update all our dispatches which are controlled by our dispatch interceptors + */ + void updateDispatches(); + + /** connect to the dispatch interceptors + */ + void connectDispatchers(); + + /** disconnect from the dispatch interceptors + */ + void disconnectDispatchers(); + + /** queries the interceptor chain for a dispatcher for the given URL + */ + css::uno::Reference< css::frame::XDispatch > + queryDispatch( const css::util::URL& _rURL ); + + /** invalidates the set of supported features + + <p>This will invalidate all structures which are tied to the set of supported + features. All dispatches will be disconnected.<br/> + No automatic re-connection to potential external dispatchers is done, instead, + you have to call updateDispatches explicitly, if necessary.</p> + */ + void invalidateSupportedFeaturesSet(); + + private: + /** initialize m_aSupportedFeatures, if necessary + */ + void initializeSupportedFeatures(); + }; + + /** helper class mapping between feature ids and feature URLs + */ + class OFormNavigationMapper + { + private: + ::std::unique_ptr< UrlTransformer > m_pUrlTransformer; + + public: + OFormNavigationMapper( + const css::uno::Reference< css::uno::XComponentContext >& _rxORB + ); + ~OFormNavigationMapper( ); + + /** retrieves the ASCII representation of a feature URL belonging to an id + + @complexity O(log n) + @return NULL if the given id is not a known feature id (which is a valid usage) + */ + static const char* getFeatureURLAscii( sal_Int16 _nFeatureId ); + + /** retrieves the feature URL belonging to a feature id + + @complexity O(log n), with n being the number of all potentially known URLs + @return + <TRUE/> if and only if the given id is a known feature id + (which is a valid usage) + */ + bool getFeatureURL( sal_Int16 _nFeatureId, css::util::URL& /* [out] */ _rURL ); + + /** retrieves the feature id belonging to a feature URL + + @complexity O(n), with n being the number of all potentially known URLs + @return + the id of the feature URL, or -1 if the URl is not known + (which is a valid usage) + */ + static sal_Int16 getFeatureId( std::u16string_view _rCompleteURL ); + + private: + OFormNavigationMapper( const OFormNavigationMapper& ) = delete; + OFormNavigationMapper& operator=( const OFormNavigationMapper& ) = delete; + }; + + +} // namespace frm + + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |