forms/source/helper/formnavigation.cxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /*
   3  * This file is part of the LibreOffice project.
   4  *
   5  * This Source Code Form is subject to the terms of the Mozilla Public
   6  * License, v. 2.0. If a copy of the MPL was not distributed with this
   7  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
   8  *
   9  * This file incorporates work covered by the following license notice:
  10  *
  11  *   Licensed to the Apache Software Foundation (ASF) under one or more
  12  *   contributor license agreements. See the NOTICE file distributed
  13  *   with this work for additional information regarding copyright
  14  *   ownership. The ASF licenses this file to you under the Apache
  15  *   License, Version 2.0 (the "License"); you may not use this file
  16  *   except in compliance with the License. You may obtain a copy of
  17  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  18  */
  19
  20 #include <formnavigation.hxx>
  21 #include <urltransformer.hxx>
  22 #include <controlfeatureinterception.hxx>
  23 #include <frm_strings.hxx>
  24
  25 #include <com/sun/star/form/runtime/FormFeature.hpp>
  26
  27 #include <comphelper/propertyvalue.hxx>
  28 #include <tools/debug.hxx>
  29 #include <o3tl/string_view.hxx>
  30 #include <osl/diagnose.h>
  31
  32
  33 namespace frm
  34 {
  35
  36
  37     using namespace ::com::sun::star::uno;
  38     using namespace ::com::sun::star::beans;
  39     using namespace ::com::sun::star::lang;
  40     using namespace ::com::sun::star::util;
  41     using namespace ::com::sun::star::frame;
  42     namespace FormFeature = ::com::sun::star::form::runtime::FormFeature;
  43
  44     OFormNavigationHelper::OFormNavigationHelper( const Reference< XComponentContext >& _rxORB )
  45         :m_xORB( _rxORB )
  46         ,m_aFeatureInterception( m_xORB )
  47         ,m_nConnectedFeatures( 0 )
  48     {
  49     }
  50
  51
  52     OFormNavigationHelper::~OFormNavigationHelper()
  53     {
  54     }
  55
  56
  57     void OFormNavigationHelper::dispose( )
  58     {
  59         m_aFeatureInterception.dispose();
  60         disconnectDispatchers();
  61     }
  62
  63
  64     void OFormNavigationHelper::interceptorsChanged( )
  65     {
  66         updateDispatches();
  67     }
  68
  69
  70     void OFormNavigationHelper::featureStateChanged( sal_Int16 /*_nFeatureId*/, bool /*_bEnabled*/ )
  71     {
  72         // not interested in
  73     }
  74
  75
  76     void OFormNavigationHelper::allFeatureStatesChanged( )
  77     {
  78         // not interested in
  79     }
  80
  81
  82     void SAL_CALL OFormNavigationHelper::registerDispatchProviderInterceptor( const Reference< XDispatchProviderInterceptor >& _rxInterceptor )
  83     {
  84         m_aFeatureInterception.registerDispatchProviderInterceptor( _rxInterceptor );
  85         interceptorsChanged();
  86     }
  87
  88
  89     void SAL_CALL OFormNavigationHelper::releaseDispatchProviderInterceptor( const Reference< XDispatchProviderInterceptor >& _rxInterceptor )
  90     {
  91         m_aFeatureInterception.releaseDispatchProviderInterceptor( _rxInterceptor );
  92         interceptorsChanged();
  93     }
  94
  95
  96     void SAL_CALL OFormNavigationHelper::statusChanged( const FeatureStateEvent& _rState )
  97     {
  98         for (auto & feature : m_aSupportedFeatures)
  99         {
 100             if ( feature.second.aURL.Main == _rState.FeatureURL.Main )
 101             {
 102                 if  (  ( feature.second.bCachedState != bool(_rState.IsEnabled) )
 103                     || ( feature.second.aCachedAdditionalState != _rState.State )
 104                     )
 105                 {
 106                     // change the cached state
 107                     feature.second.bCachedState           = _rState.IsEnabled;
 108                     feature.second.aCachedAdditionalState = _rState.State;
 109                     // tell derivees what happened
 110                     featureStateChanged( feature.first, _rState.IsEnabled );
 111                 }
 112                 return;
 113             }
 114         }
 115
 116         // unreachable
 117         OSL_FAIL( "OFormNavigationHelper::statusChanged: huh? An invalid/unknown URL?" );
 118     }
 119
 120
 121     void SAL_CALL OFormNavigationHelper::disposing( const EventObject& _rSource )
 122     {
 123         // was it one of our external dispatchers?
 124         if ( !m_nConnectedFeatures )
 125             return;
 126
 127         for (auto & feature : m_aSupportedFeatures)
 128         {
 129             if ( feature.second.xDispatcher == _rSource.Source )
 130             {
 131                 feature.second.xDispatcher->removeStatusListener( static_cast< XStatusListener* >( this ), feature.second.aURL );
 132                 feature.second.xDispatcher = nullptr;
 133                 feature.second.bCachedState = false;
 134                 feature.second.aCachedAdditionalState.clear();
 135                 --m_nConnectedFeatures;
 136
 137                 featureStateChanged( feature.first, false );
 138                 break;
 139             }
 140         }
 141     }
 142
 143
 144     void OFormNavigationHelper::updateDispatches()
 145     {
 146         if ( !m_nConnectedFeatures )
 147         {   // we don't have any dispatchers yet -> do the initial connect
 148             connectDispatchers();
 149             return;
 150         }
 151
 152         initializeSupportedFeatures();
 153
 154         m_nConnectedFeatures = 0;
 155
 156         Reference< XDispatch >  xNewDispatcher;
 157         Reference< XDispatch >  xCurrentDispatcher;
 158
 159         for (auto & feature : m_aSupportedFeatures)
 160         {
 161             xNewDispatcher = queryDispatch( feature.second.aURL );
 162             xCurrentDispatcher = feature.second.xDispatcher;
 163             if ( xNewDispatcher != xCurrentDispatcher )
 164             {
 165                 // the dispatcher for this particular URL changed
 166                 if ( xCurrentDispatcher.is() )
 167                     xCurrentDispatcher->removeStatusListener( static_cast< XStatusListener* >( this ), feature.second.aURL );
 168
 169                 xCurrentDispatcher = feature.second.xDispatcher = xNewDispatcher;
 170
 171                 if ( xCurrentDispatcher.is() )
 172                     xCurrentDispatcher->addStatusListener( static_cast< XStatusListener* >( this ), feature.second.aURL );
 173             }
 174
 175             if ( xCurrentDispatcher.is() )
 176                 ++m_nConnectedFeatures;
 177             else
 178                 feature.second.bCachedState = false;
 179         }
 180
 181         // notify derivee that (potentially) all features changed their state
 182         allFeatureStatesChanged( );
 183     }
 184
 185
 186     void OFormNavigationHelper::connectDispatchers()
 187     {
 188         if ( m_nConnectedFeatures )
 189         {   // already connected -> just do an update
 190             updateDispatches();
 191             return;
 192         }
 193
 194         initializeSupportedFeatures();
 195
 196         m_nConnectedFeatures = 0;
 197
 198         for (auto & feature : m_aSupportedFeatures)
 199         {
 200             feature.second.bCachedState = false;
 201             feature.second.aCachedAdditionalState.clear();
 202             feature.second.xDispatcher = queryDispatch( feature.second.aURL );
 203             if ( feature.second.xDispatcher.is() )
 204             {
 205                 ++m_nConnectedFeatures;
 206                 feature.second.xDispatcher->addStatusListener( static_cast< XStatusListener* >( this ), feature.second.aURL );
 207             }
 208         }
 209
 210         // notify derivee that (potentially) all features changed their state
 211         allFeatureStatesChanged( );
 212     }
 213
 214
 215     void OFormNavigationHelper::disconnectDispatchers()
 216     {
 217         if ( m_nConnectedFeatures )
 218         {
 219             for (auto & feature : m_aSupportedFeatures)
 220             {
 221                 if ( feature.second.xDispatcher.is() )
 222                     feature.second.xDispatcher->removeStatusListener( static_cast< XStatusListener* >( this ), feature.second.aURL );
 223
 224                 feature.second.xDispatcher = nullptr;
 225                 feature.second.bCachedState = false;
 226                 feature.second.aCachedAdditionalState.clear();
 227             }
 228
 229             m_nConnectedFeatures = 0;
 230         }
 231
 232         // notify derivee that (potentially) all features changed their state
 233         allFeatureStatesChanged( );
 234     }
 235
 236
 237     void OFormNavigationHelper::initializeSupportedFeatures( )
 238     {
 239         if ( !m_aSupportedFeatures.empty() )
 240             return;
 241
 242         // ask the derivee which feature ids it wants us to support
 243         ::std::vector< sal_Int16 > aFeatureIds;
 244         getSupportedFeatures( aFeatureIds );
 245
 246         OFormNavigationMapper aUrlMapper( m_xORB );
 247
 248         for (auto const& feature : aFeatureIds)
 249         {
 250             FeatureInfo aFeatureInfo;
 251
 252             bool bKnownId =
 253                 aUrlMapper.getFeatureURL( feature, aFeatureInfo.aURL );
 254             DBG_ASSERT( bKnownId, "OFormNavigationHelper::initializeSupportedFeatures: unknown feature id!" );
 255
 256             if ( bKnownId )
 257                 // add to our map
 258                 m_aSupportedFeatures.emplace( feature, aFeatureInfo );
 259         }
 260     }
 261
 262
 263     Reference< XDispatch > OFormNavigationHelper::queryDispatch( const URL& _rURL )
 264     {
 265         return m_aFeatureInterception.queryDispatch( _rURL );
 266     }
 267
 268
 269     void OFormNavigationHelper::dispatchWithArgument( sal_Int16 _nFeatureId, const char* _pParamAsciiName,
 270         const Any& _rParamValue ) const
 271     {
 272         FeatureMap::const_iterator aInfo = m_aSupportedFeatures.find( _nFeatureId );
 273         if ( m_aSupportedFeatures.end() != aInfo )
 274         {
 275             if ( aInfo->second.xDispatcher.is() )
 276             {
 277                 Sequence< PropertyValue > aArgs{ comphelper::makePropertyValue(
 278                     OUString::createFromAscii( _pParamAsciiName ), _rParamValue) };
 279
 280                 aInfo->second.xDispatcher->dispatch( aInfo->second.aURL, aArgs );
 281             }
 282         }
 283     }
 284
 285
 286     void OFormNavigationHelper::dispatch( sal_Int16 _nFeatureId ) const
 287     {
 288         FeatureMap::const_iterator aInfo = m_aSupportedFeatures.find( _nFeatureId );
 289         if ( m_aSupportedFeatures.end() != aInfo )
 290         {
 291             if ( aInfo->second.xDispatcher.is() )
 292             {
 293                 Sequence< PropertyValue > aEmptyArgs;
 294                 aInfo->second.xDispatcher->dispatch( aInfo->second.aURL, aEmptyArgs );
 295             }
 296         }
 297     }
 298
 299
 300     bool OFormNavigationHelper::isEnabled( sal_Int16 _nFeatureId ) const
 301     {
 302         FeatureMap::const_iterator aInfo = m_aSupportedFeatures.find( _nFeatureId );
 303         if ( m_aSupportedFeatures.end() != aInfo )
 304             return aInfo->second.bCachedState;
 305
 306         return false;
 307     }
 308
 309
 310     bool OFormNavigationHelper::getBooleanState( sal_Int16 _nFeatureId ) const
 311     {
 312         bool bState = false;
 313
 314         FeatureMap::const_iterator aInfo = m_aSupportedFeatures.find( _nFeatureId );
 315         if ( m_aSupportedFeatures.end() != aInfo )
 316             aInfo->second.aCachedAdditionalState >>= bState;
 317
 318         return bState;
 319     }
 320
 321
 322     OUString OFormNavigationHelper::getStringState( sal_Int16 _nFeatureId ) const
 323     {
 324         OUString sState;
 325
 326         FeatureMap::const_iterator aInfo = m_aSupportedFeatures.find( _nFeatureId );
 327         if ( m_aSupportedFeatures.end() != aInfo )
 328             aInfo->second.aCachedAdditionalState >>= sState;
 329
 330         return sState;
 331     }
 332
 333
 334     sal_Int32 OFormNavigationHelper::getIntegerState( sal_Int16 _nFeatureId ) const
 335     {
 336         sal_Int32 nState = 0;
 337
 338         FeatureMap::const_iterator aInfo = m_aSupportedFeatures.find( _nFeatureId );
 339         if ( m_aSupportedFeatures.end() != aInfo )
 340             aInfo->second.aCachedAdditionalState >>= nState;
 341
 342         return nState;
 343     }
 344
 345
 346     void OFormNavigationHelper::invalidateSupportedFeaturesSet()
 347     {
 348         disconnectDispatchers( );
 349         // no supported features anymore:
 350         FeatureMap().swap(m_aSupportedFeatures);
 351     }
 352
 353     OFormNavigationMapper::OFormNavigationMapper( const Reference< XComponentContext >& _rxORB )
 354     {
 355         m_pUrlTransformer.reset( new UrlTransformer( _rxORB ) );
 356     }
 357
 358
 359     OFormNavigationMapper::~OFormNavigationMapper( )
 360     {
 361     }
 362
 363
 364     bool OFormNavigationMapper::getFeatureURL( sal_Int16 _nFeatureId, URL& /* [out] */ _rURL )
 365     {
 366         // get the ascii version of the URL
 367         const char* pAsciiURL = getFeatureURLAscii( _nFeatureId );
 368         if ( pAsciiURL )
 369             _rURL = m_pUrlTransformer->getStrictURLFromAscii( pAsciiURL );
 370
 371         return ( pAsciiURL != nullptr );
 372     }
 373
 374
 375     namespace
 376     {
 377         struct FeatureURL
 378         {
 379             const sal_Int16 nFormFeature;
 380             const char*     pAsciiURL;
 381
 382             FeatureURL( const sal_Int16 _nFormFeature, const char* _pAsciiURL )
 383                 :nFormFeature( _nFormFeature )
 384                 ,pAsciiURL( _pAsciiURL )
 385             {
 386             }
 387         };
 388         const FeatureURL* lcl_getFeatureTable()
 389         {
 390             static const FeatureURL s_aFeatureURLs[] =
 391             {
 392                 FeatureURL( FormFeature::MoveAbsolute,            URL_FORM_POSITION ),
 393                 FeatureURL( FormFeature::TotalRecords,            URL_FORM_RECORDCOUNT ),
 394                 FeatureURL( FormFeature::MoveToFirst,             URL_RECORD_FIRST ),
 395                 FeatureURL( FormFeature::MoveToPrevious,          URL_RECORD_PREV ),
 396                 FeatureURL( FormFeature::MoveToNext,              URL_RECORD_NEXT ),
 397                 FeatureURL( FormFeature::MoveToLast,              URL_RECORD_LAST ),
 398                 FeatureURL( FormFeature::SaveRecordChanges,       URL_RECORD_SAVE ),
 399                 FeatureURL( FormFeature::UndoRecordChanges,       URL_RECORD_UNDO ),
 400                 FeatureURL( FormFeature::MoveToInsertRow,         URL_RECORD_NEW ),
 401                 FeatureURL( FormFeature::DeleteRecord,            URL_RECORD_DELETE ),
 402                 FeatureURL( FormFeature::ReloadForm,              URL_FORM_REFRESH ),
 403                 FeatureURL( FormFeature::RefreshCurrentControl,   URL_FORM_REFRESH_CURRENT_CONTROL ),
 404                 FeatureURL( FormFeature::SortAscending,           URL_FORM_SORT_UP ),
 405                 FeatureURL( FormFeature::SortDescending,          URL_FORM_SORT_DOWN ),
 406                 FeatureURL( FormFeature::InteractiveSort,         URL_FORM_SORT ),
 407                 FeatureURL( FormFeature::AutoFilter,              URL_FORM_AUTO_FILTER ),
 408                 FeatureURL( FormFeature::InteractiveFilter,       URL_FORM_FILTER ),
 409                 FeatureURL( FormFeature::ToggleApplyFilter,       URL_FORM_APPLY_FILTER ),
 410                 FeatureURL( FormFeature::RemoveFilterAndSort,     URL_FORM_REMOVE_FILTER ),
 411                 FeatureURL( 0, nullptr )
 412             };
 413             return s_aFeatureURLs;
 414         }
 415     }
 416
 417
 418     const char* OFormNavigationMapper::getFeatureURLAscii( sal_Int16 _nFeatureId )
 419     {
 420         const FeatureURL* pFeatures = lcl_getFeatureTable();
 421         while ( pFeatures->pAsciiURL )
 422         {
 423             if ( pFeatures->nFormFeature == _nFeatureId )
 424                 return pFeatures->pAsciiURL;
 425             ++pFeatures;
 426         }
 427         return nullptr;
 428     }
 429
 430
 431     sal_Int16 OFormNavigationMapper::getFeatureId( std::u16string_view _rCompleteURL )
 432     {
 433         const FeatureURL* pFeatures = lcl_getFeatureTable();
 434         while ( pFeatures->pAsciiURL )
 435         {
 436             if ( o3tl::equalsAscii( _rCompleteURL, pFeatures->pAsciiURL ) )
 437                 return pFeatures->nFormFeature;
 438             ++pFeatures;
 439         }
 440         return -1;
 441     }
 442
 443
 444 }   // namespace frm
 445
 446
 447 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */