xmloff/source/text/txtlists.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
  21 #include <txtlists.hxx>
  22 #include <comphelper/random.hxx>
  23
  24 #include <o3tl/safeint.hxx>
  25 #include <tools/datetime.hxx>
  26 #include <tools/long.hxx>
  27 #include <sal/log.hxx>
  28
  29 #include <xmloff/txtimp.hxx>
  30 #include <xmloff/xmlimp.hxx>
  31 #include <xmloff/xmlnumi.hxx>
  32
  33 #include <com/sun/star/style/XStyle.hpp>
  34 #include <com/sun/star/beans/XPropertySet.hpp>
  35 #include <com/sun/star/container/XNameContainer.hpp>
  36 #include "XMLTextListItemContext.hxx"
  37 #include "XMLTextListBlockContext.hxx"
  38 #include "txtparai.hxx"
  39
  40
  41 using namespace ::com::sun::star;
  42
  43
  44 XMLTextListsHelper::XMLTextListsHelper()
  45    :  msLastProcessedListId(),
  46       msListStyleOfLastProcessedList()
  47       // Inconsistent behavior regarding lists (#i92811#)
  48 {
  49 }
  50
  51 void XMLTextListsHelper::PushListContext(
  52     XMLTextListBlockContext *i_pListBlock)
  53 {
  54     mListStack.emplace(i_pListBlock,
  55         static_cast<XMLTextListItemContext*>(nullptr),
  56         static_cast<XMLNumberedParaContext*>(nullptr));
  57 }
  58
  59 void XMLTextListsHelper::PushListContext(
  60     XMLNumberedParaContext *i_pNumberedParagraph)
  61 {
  62     mListStack.emplace(
  63         static_cast<XMLTextListBlockContext*>(nullptr),
  64         static_cast<XMLTextListItemContext*>(nullptr), i_pNumberedParagraph);
  65 }
  66
  67 void XMLTextListsHelper::PopListContext()
  68 {
  69     assert(mListStack.size());
  70     if ( !mListStack.empty())
  71         mListStack.pop();
  72 }
  73
  74 void XMLTextListsHelper::ListContextTop(
  75     XMLTextListBlockContext*& o_pListBlockContext,
  76     XMLTextListItemContext*& o_pListItemContext,
  77     XMLNumberedParaContext*& o_pNumberedParagraphContext )
  78 {
  79     if ( !mListStack.empty() ) {
  80         o_pListBlockContext =
  81             static_cast<XMLTextListBlockContext*>(std::get<0>(mListStack.top()).get());
  82         o_pListItemContext  =
  83             static_cast<XMLTextListItemContext *>(std::get<1>(mListStack.top()).get());
  84         o_pNumberedParagraphContext =
  85             static_cast<XMLNumberedParaContext *>(std::get<2>(mListStack.top()).get());
  86     }
  87 }
  88
  89 void XMLTextListsHelper::SetListItem( XMLTextListItemContext *i_pListItem )
  90 {
  91     // may be cleared by ListBlockContext for upper list...
  92     if (i_pListItem) {
  93         assert(mListStack.size());
  94         assert(std::get<0>(mListStack.top()).is() &&
  95             "internal error: SetListItem: mListStack has no ListBlock");
  96         assert(!std::get<1>(mListStack.top()).is() &&
  97             "error: SetListItem: list item already exists");
  98     }
  99     if ( !mListStack.empty() ) {
 100         std::get<1>(mListStack.top()) = i_pListItem;
 101     }
 102 }
 103
 104 // Handling for parameter <sListStyleDefaultListId> (#i92811#)
 105 void XMLTextListsHelper::KeepListAsProcessed( const OUString& sListId,
 106                                               const OUString& sListStyleName,
 107                                               const OUString& sContinueListId,
 108                                               const OUString& sListStyleDefaultListId )
 109 {
 110     if ( IsListProcessed( sListId ) )
 111     {
 112         assert(false &&
 113                     "<XMLTextListsHelper::KeepListAsProcessed(..)> - list id already added" );
 114         return;
 115     }
 116
 117     if ( !mpProcessedLists )
 118     {
 119         mpProcessedLists = std::make_unique<tMapForLists>();
 120     }
 121
 122     ::std::pair< OUString, OUString >
 123                                 aListData( sListStyleName, sContinueListId );
 124     (*mpProcessedLists)[ sListId ] = aListData;
 125
 126     msLastProcessedListId = sListId;
 127     msListStyleOfLastProcessedList = sListStyleName;
 128
 129     // Inconsistent behavior regarding lists (#i92811#)
 130     if ( sListStyleDefaultListId.isEmpty())
 131         return;
 132
 133     if ( !mpMapListIdToListStyleDefaultListId )
 134     {
 135         mpMapListIdToListStyleDefaultListId = std::make_unique<tMapForLists>();
 136     }
 137
 138     if ( mpMapListIdToListStyleDefaultListId->find( sListStyleName ) ==
 139                             mpMapListIdToListStyleDefaultListId->end() )
 140     {
 141         ::std::pair< OUString, OUString >
 142                             aListIdMapData( sListId, sListStyleDefaultListId );
 143         (*mpMapListIdToListStyleDefaultListId)[ sListStyleName ] =
 144                                                             aListIdMapData;
 145     }
 146 }
 147
 148 bool XMLTextListsHelper::IsListProcessed( const OUString& sListId ) const
 149 {
 150     if ( !mpProcessedLists )
 151     {
 152         return false;
 153     }
 154
 155     return mpProcessedLists->find( sListId ) != mpProcessedLists->end();
 156 }
 157
 158 OUString XMLTextListsHelper::GetListStyleOfProcessedList(
 159                                             const OUString& sListId ) const
 160 {
 161     if ( mpProcessedLists )
 162     {
 163         tMapForLists::const_iterator aIter = mpProcessedLists->find( sListId );
 164         if ( aIter != mpProcessedLists->end() )
 165         {
 166             return (*aIter).second.first;
 167         }
 168     }
 169
 170     return OUString();
 171 }
 172
 173 OUString XMLTextListsHelper::GetContinueListIdOfProcessedList(
 174                                             const OUString& sListId ) const
 175 {
 176     if ( mpProcessedLists )
 177     {
 178         tMapForLists::const_iterator aIter = mpProcessedLists->find( sListId );
 179         if ( aIter != mpProcessedLists->end() )
 180         {
 181             return (*aIter).second.second;
 182         }
 183     }
 184
 185     return OUString();
 186 }
 187
 188
 189 OUString XMLTextListsHelper::GenerateNewListId() const
 190 {
 191     static bool bHack = (getenv("LIBO_ONEWAY_STABLE_ODF_EXPORT") != nullptr);
 192     OUString sTmpStr( "list" );
 193
 194     if (bHack)
 195     {
 196         static sal_Int64 nIdCounter = SAL_CONST_INT64(5000000000);
 197         sTmpStr += OUString::number(nIdCounter++);
 198     }
 199     else
 200     {
 201         // Value of xml:id in element <text:list> has to be a valid ID type (#i92478#)
 202         DateTime aDateTime( DateTime::SYSTEM );
 203         sal_Int64 n = aDateTime.GetTime();
 204         n += aDateTime.GetDateUnsigned();
 205         n += comphelper::rng::uniform_int_distribution(0, std::numeric_limits<int>::max());
 206         // Value of xml:id in element <text:list> has to be a valid ID type (#i92478#)
 207         sTmpStr += OUString::number( n );
 208     }
 209
 210     OUString sNewListId( sTmpStr );
 211     if ( mpProcessedLists )
 212     {
 213         tools::Long nHitCount = 0;
 214         while ( mpProcessedLists->find( sNewListId ) != mpProcessedLists->end() )
 215         {
 216             ++nHitCount;
 217             sNewListId = sTmpStr + OUString::number( nHitCount );
 218         }
 219     }
 220
 221     return sNewListId;
 222 }
 223
 224 // Provide list id for a certain list block for import (#i92811#)
 225 OUString XMLTextListsHelper::GetListIdForListBlock( XMLTextListBlockContext const & rListBlock )
 226 {
 227     OUString sListBlockListId( rListBlock.GetContinueListId() );
 228     if ( sListBlockListId.isEmpty() )
 229     {
 230         sListBlockListId = rListBlock.GetListId();
 231     }
 232
 233     if ( mpMapListIdToListStyleDefaultListId )
 234     {
 235         if ( !sListBlockListId.isEmpty() )
 236         {
 237             const OUString sListStyleName =
 238                                 GetListStyleOfProcessedList( sListBlockListId );
 239
 240             tMapForLists::const_iterator aIter =
 241                     mpMapListIdToListStyleDefaultListId->find( sListStyleName );
 242             if ( aIter != mpMapListIdToListStyleDefaultListId->end() )
 243             {
 244                 if ( (*aIter).second.first == sListBlockListId )
 245                 {
 246                     sListBlockListId = (*aIter).second.second;
 247                 }
 248             }
 249         }
 250     }
 251
 252     return sListBlockListId;
 253 }
 254
 255 void XMLTextListsHelper::StoreLastContinuingList( const OUString& sListId,
 256                                                   const OUString& sContinuingListId )
 257 {
 258     if ( !mpContinuingLists )
 259     {
 260         mpContinuingLists = std::make_unique<tMapForContinuingLists>();
 261     }
 262
 263     (*mpContinuingLists)[ sListId ] = sContinuingListId;
 264 }
 265
 266 OUString XMLTextListsHelper::GetLastContinuingListId(
 267                                                 const OUString& sListId ) const
 268 {
 269     if ( mpContinuingLists )
 270     {
 271         tMapForContinuingLists::const_iterator aIter =
 272                                                 mpContinuingLists->find( sListId );
 273         if ( aIter != mpContinuingLists->end() )
 274         {
 275             return (*aIter).second;
 276         }
 277     }
 278
 279     return sListId;
 280 }
 281
 282 void XMLTextListsHelper::PushListOnStack( const OUString& sListId,
 283                                           const OUString& sListStyleName )
 284 {
 285     if ( !mpListStack )
 286     {
 287         mpListStack = std::make_unique<tStackForLists>();
 288     }
 289     ::std::pair< OUString, OUString >
 290                                 aListData( sListId, sListStyleName );
 291     mpListStack->push_back( aListData );
 292 }
 293 void XMLTextListsHelper::PopListFromStack()
 294 {
 295     if ( mpListStack &&
 296          !mpListStack->empty() )
 297     {
 298         mpListStack->pop_back();
 299     }
 300 }
 301
 302 bool XMLTextListsHelper::EqualsToTopListStyleOnStack( const OUString& sListId ) const
 303 {
 304     return mpListStack && sListId == mpListStack->back().second;
 305 }
 306
 307 OUString
 308 XMLTextListsHelper::GetNumberedParagraphListId(
 309     const sal_uInt16 i_Level,
 310     const OUString& i_StyleName)
 311 {
 312     if (i_StyleName.isEmpty()) {
 313         SAL_INFO("xmloff.text", "invalid numbered-paragraph: no style-name");
 314     }
 315     if (!i_StyleName.isEmpty()
 316         && (i_Level < mLastNumberedParagraphs.size())
 317         && (mLastNumberedParagraphs[i_Level].first == i_StyleName) )
 318     {
 319         assert(!mLastNumberedParagraphs[i_Level].second.isEmpty() &&
 320             "internal error: numbered-paragraph style-name but no list-id?");
 321         return mLastNumberedParagraphs[i_Level].second;
 322     } else {
 323         return GenerateNewListId();
 324     }
 325 }
 326
 327 static void
 328 ClampLevel(uno::Reference<container::XIndexReplace> const& i_xNumRules,
 329     sal_Int16 & io_rLevel)
 330 {
 331     assert(i_xNumRules.is());
 332     if (i_xNumRules.is()) {
 333         const sal_Int32 nLevelCount( i_xNumRules->getCount() );
 334         if ( io_rLevel >= nLevelCount ) {
 335             io_rLevel = sal::static_int_cast< sal_Int16 >(nLevelCount-1);
 336         }
 337     }
 338 }
 339
 340 uno::Reference<container::XIndexReplace>
 341 XMLTextListsHelper::EnsureNumberedParagraph(
 342     SvXMLImport & i_rImport,
 343     const OUString& i_ListId,
 344     sal_Int16 & io_rLevel, const OUString& i_StyleName)
 345 {
 346     assert(!i_ListId.isEmpty());
 347     assert(io_rLevel >= 0);
 348     NumParaList_t & rNPList( mNPLists[i_ListId] );
 349     const OUString none; // default
 350     if ( rNPList.empty() ) {
 351         // create default list style for top level
 352         sal_Int16 lev(0);
 353         rNPList.emplace_back(none,
 354             MakeNumRule(i_rImport, nullptr, none, none, lev) );
 355     }
 356     // create num rule first because this might clamp the level...
 357     uno::Reference<container::XIndexReplace> xNumRules;
 358     if ((0 == io_rLevel) || rNPList.empty() || !i_StyleName.isEmpty()) {
 359         // no parent to inherit from, or explicit style given => new numrules!
 360         // index of parent: level - 1, but maybe that does not exist
 361         const size_t parent( std::min(static_cast<size_t>(io_rLevel),
 362             rNPList.size()) - 1 );
 363         xNumRules = MakeNumRule(i_rImport,
 364             io_rLevel > 0 ? rNPList[parent].second : nullptr,
 365             io_rLevel > 0 ? rNPList[parent].first  : none,
 366             i_StyleName, io_rLevel);
 367     } else {
 368         // no style given, but has a parent => reuse parent numrules!
 369         ClampLevel(rNPList.back().second, io_rLevel);
 370     }
 371     if (static_cast<sal_uInt16>(io_rLevel) + 1U > rNPList.size()) {
 372         // new level: need to enlarge
 373         for (size_t i = rNPList.size();
 374                 i < o3tl::make_unsigned(io_rLevel); ++i)
 375         {
 376             NumParaList_t::value_type const rule(rNPList.back());
 377             rNPList.push_back(rule);
 378         }
 379         NumParaList_t::value_type const rule(rNPList.back());
 380         rNPList.push_back(xNumRules.is()
 381             ? ::std::make_pair(i_StyleName, xNumRules)
 382             : rule);
 383     } else {
 384         // old level: no need to enlarge; possibly shrink
 385         if (xNumRules.is()) {
 386             rNPList[io_rLevel] = std::make_pair(i_StyleName, xNumRules);
 387         }
 388         if (static_cast<sal_uInt16>(io_rLevel) + 1U < rNPList.size()) {
 389             rNPList.erase(rNPList.begin() + io_rLevel + 1, rNPList.end());
 390         }
 391     }
 392     // remember the list id
 393     if (mLastNumberedParagraphs.size() <= o3tl::make_unsigned(io_rLevel)) {
 394         mLastNumberedParagraphs.resize(io_rLevel+1);
 395     }
 396     mLastNumberedParagraphs[io_rLevel] = std::make_pair(i_StyleName, i_ListId);
 397     return rNPList.back().second;
 398 }
 399
 400 /** extracted from the XMLTextListBlockContext constructor */
 401 uno::Reference<container::XIndexReplace>
 402 XMLTextListsHelper::MakeNumRule(
 403     SvXMLImport & i_rImport,
 404     const uno::Reference<container::XIndexReplace>& i_rNumRule,
 405     const OUString& i_ParentStyleName,
 406     const OUString& i_StyleName,
 407     sal_Int16 & io_rLevel,
 408     bool* o_pRestartNumbering,
 409     bool* io_pSetDefaults)
 410 {
 411     uno::Reference<container::XIndexReplace> xNumRules(i_rNumRule);
 412     if ( !i_StyleName.isEmpty() && i_StyleName != i_ParentStyleName )
 413     {
 414         const OUString sDisplayStyleName(
 415             i_rImport.GetStyleDisplayName( XmlStyleFamily::TEXT_LIST,
 416                                              i_StyleName) );
 417         const uno::Reference < container::XNameContainer >& rNumStyles(
 418                             i_rImport.GetTextImport()->GetNumberingStyles() );
 419         if( rNumStyles.is() && rNumStyles->hasByName( sDisplayStyleName ) )
 420         {
 421             uno::Reference < style::XStyle > xStyle;
 422             uno::Any any = rNumStyles->getByName( sDisplayStyleName );
 423             any >>= xStyle;
 424
 425             uno::Reference< beans::XPropertySet > xPropSet( xStyle,
 426                 uno::UNO_QUERY );
 427             any = xPropSet->getPropertyValue("NumberingRules");
 428             any >>= xNumRules;
 429         }
 430         else
 431         {
 432             const SvxXMLListStyleContext *pListStyle(
 433                 i_rImport.GetTextImport()->FindAutoListStyle( i_StyleName ) );
 434             if( pListStyle )
 435             {
 436                 xNumRules = pListStyle->GetNumRules();
 437                 if( !xNumRules.is() )
 438                 {
 439                     pListStyle->CreateAndInsertAuto();
 440                     xNumRules = pListStyle->GetNumRules();
 441                 }
 442             }
 443         }
 444     }
 445
 446     bool bSetDefaults(io_pSetDefaults && *io_pSetDefaults);
 447     if ( !xNumRules.is() )
 448     {
 449         // If no style name has been specified for this style and for any
 450         // parent or if no num rule with the specified name exists,
 451         // create a new one.
 452
 453         xNumRules =
 454             SvxXMLListStyleContext::CreateNumRule( i_rImport.GetModel() );
 455         SAL_INFO_IF(xNumRules.is(), "xmloff.core", "cannot create numrules");
 456         if ( !xNumRules.is() )
 457             return xNumRules;
 458
 459         // Because it is a new num rule, numbering must not be restarted.
 460         if (o_pRestartNumbering) *o_pRestartNumbering = false;
 461         bSetDefaults = true;
 462         if (io_pSetDefaults) *io_pSetDefaults = bSetDefaults;
 463     }
 464
 465     ClampLevel(xNumRules, io_rLevel);
 466
 467     if ( bSetDefaults )
 468     {
 469         // Because there is no list style sheet for this style, a default
 470         // format must be set for any level of this num rule.
 471         SvxXMLListStyleContext::SetDefaultStyle( xNumRules, io_rLevel,
 472             false );
 473     }
 474
 475     return xNumRules;
 476 }
 477
 478 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */