include/svx/fmsrcimp.hxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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   8  *
   9  * This file incorporates work covered by the following license notice:
  10  *
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  12  *   contributor license agreements. See the NOTICE file distributed
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  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 #ifndef INCLUDED_SVX_FMSRCIMP_HXX
  21 #define INCLUDED_SVX_FMSRCIMP_HXX
  22
  23 #include <svx/fmtools.hxx>
  24 #include <svx/svxdllapi.h>
  25
  26 #include <com/sun/star/beans/XPropertyChangeListener.hpp>
  27
  28 #include <cppuhelper/implbase.hxx>
  29 #include <unotools/charclass.hxx>
  30 #include <unotools/collatorwrapper.hxx>
  31 #include <tools/link.hxx>
  32
  33 #include <atomic>
  34 #include <deque>
  35 #include <memory>
  36 #include <string_view>
  37 #include <vector>
  38
  39 namespace com::sun::star::awt { class XCheckBox; }
  40 namespace com::sun::star::awt { class XListBox; }
  41 namespace com::sun::star::awt { class XTextComponent; }
  42 namespace com::sun::star::sdb { class XColumn; }
  43
  44 enum class TransliterationFlags;
  45
  46 /**
  47  * struct FmSearchProgress - the owner of SearchEngine receives this structure for status updates
  48  * (at the end of the search)
  49  */
  50 struct FmSearchProgress
  51 {
  52     enum class State { Progress, ProgressCounting, Canceled, Successful, NothingFound, Error };
  53     // (move to new record; progress during counting of records; cancelled; record found; nothing found;
  54     // any non-processable error)
  55     State       aSearchState;
  56
  57     // current record - always valid (e.g. of interest for continuing search in case of cancellation)
  58     sal_uInt32  nCurrentRecord;
  59     // Overflow - only valid in case of STATE_PROGRESS
  60     bool        bOverflow;
  61
  62     // the position of the search cursor - valid in case of STATE_SUCCESSFUL, STATE_CANCELED and STATE_NOTHING_FOUND
  63     css::uno::Any  aBookmark;
  64     // the field, in which the text was found - valid in case of STATE_SUCCESSFUL
  65     sal_Int32   nFieldIndex;
  66 };
  67
  68 /**
  69  * class FmRecordCountListener - utility class for FmSearchEngine, listens at a certain cursor and provides
  70  *                               the differences in RecordCount
  71  */
  72 // workaround for incremental linking bugs in MSVC2019
  73 class SAL_DLLPUBLIC_TEMPLATE FmRecordCountListener_Base : public cppu::WeakImplHelper< css::beans::XPropertyChangeListener > {};
  74 class SAL_WARN_UNUSED FmRecordCountListener final : public FmRecordCountListener_Base
  75 {
  76 // attribute
  77     Link<sal_Int32,void>     m_lnkWhoWantsToKnow;
  78     css::uno::Reference< css::beans::XPropertySet >   m_xListening;
  79
  80 // attribute access
  81 public:
  82     void SetPropChangeHandler(const Link<sal_Int32,void>& lnk);
  83
  84 // methods
  85 public:
  86     FmRecordCountListener(const css::uno::Reference< css::sdbc::XResultSet >& dbcCursor);
  87     // the set has to support the sdb::ResultSet service
  88     virtual ~FmRecordCountListener() override;
  89
  90     //  DECLARE_UNO3_AGG_DEFAULTS(FmPropertyListener, UsrObject)
  91     //  virtual sal_Bool queryInterface(css::uno::Uik aUik, css::uno::Reference< css::uno::XInterface >& rOut);
  92
  93     // css::lang::XEventListener
  94     virtual void SAL_CALL disposing(const css::lang::EventObject& Source) override;
  95
  96     // css::beans::XPropertyChangeListener
  97     virtual void SAL_CALL propertyChange(const css::beans::PropertyChangeEvent& evt) override;
  98
  99     void DisConnect();
 100
 101 private:
 102     void NotifyCurrentCount();
 103
 104 };
 105
 106 /**
 107  * class FmSearchEngine - Impl class for FmSearchDialog
 108  */
 109 namespace svxform {
 110     // We have three possible control types we may search in, determined by the supported interfaces : css::awt::XTextComponent,
 111     // css::awt::XListBox, css::awt::XCheckBox.
 112     // While searching we don't want to do this distinction for every control in every round. So we need some helpers.
 113     class SAL_WARN_UNUSED ControlTextWrapper
 114     {
 115         // attributes
 116         css::uno::Reference< css::uno::XInterface >   m_xControl;
 117         // attribute access
 118     public:
 119         const css::uno::Reference< css::uno::XInterface >&  getControl() const{ return m_xControl; }
 120     public:
 121         ControlTextWrapper(const css::uno::Reference< css::uno::XInterface >& _xControl) { m_xControl = _xControl; }
 122         virtual ~ControlTextWrapper() { }
 123
 124         virtual OUString getCurrentText() const = 0;
 125     };
 126
 127     class SAL_WARN_UNUSED SimpleTextWrapper final : public ControlTextWrapper
 128     {
 129         css::uno::Reference< css::awt::XTextComponent >  m_xText;
 130     public:
 131         SimpleTextWrapper(const css::uno::Reference< css::awt::XTextComponent >& _xText);
 132         virtual OUString getCurrentText() const override;
 133     };
 134
 135     class SAL_WARN_UNUSED ListBoxWrapper final : public ControlTextWrapper
 136     {
 137         css::uno::Reference< css::awt::XListBox >  m_xBox;
 138     public:
 139         ListBoxWrapper(const css::uno::Reference< css::awt::XListBox >& _xBox);
 140         virtual OUString getCurrentText() const override;
 141     };
 142
 143     class SAL_WARN_UNUSED CheckBoxWrapper final : public ControlTextWrapper
 144     {
 145         css::uno::Reference< css::awt::XCheckBox >  m_xBox;
 146     public:
 147         CheckBoxWrapper(const css::uno::Reference< css::awt::XCheckBox >& _xBox);
 148         virtual OUString getCurrentText() const override;
 149     };
 150 }
 151
 152 typedef std::vector< css::uno::Reference< css::uno::XInterface> > InterfaceArray;
 153
 154 class SAL_WARN_UNUSED SVX_DLLPUBLIC FmSearchEngine final
 155 {
 156     friend class FmSearchThread;
 157
 158     enum class SearchResult { Found, NotFound, Error, Cancelled };
 159     enum class SearchFor { String, Null, NotNull };
 160
 161     CursorWrapper                   m_xSearchCursor;
 162     std::deque<sal_Int32>           m_arrFieldMapping;
 163     // Since the iterator could have more columns, as managed here (in this field listbox),
 164     // a mapping of this css::form keys on the indices of the respective columns is kept in the iterator
 165
 166     CharClass               m_aCharacterClassficator;
 167     CollatorWrapper         m_aStringCompare;
 168
 169     // the collection of all interesting fields (or their css::data::XDatabaseVariant interfaces and FormatKeys)
 170     struct FieldInfo
 171     {
 172         css::uno::Reference< css::sdb::XColumn >          xContents;
 173     };
 174
 175     typedef std::vector<FieldInfo> FieldCollection;
 176     FieldCollection             m_arrUsedFields;
 177     sal_Int32                   m_nCurrentFieldIndex;   // the last parameter of RebuildUsedFields, it allows checks in FormatField
 178
 179     std::vector<std::unique_ptr<svxform::ControlTextWrapper>>
 180                             m_aControlTexts;
 181
 182     CursorWrapper           m_xOriginalIterator;
 183     CursorWrapper           m_xClonedIterator;
 184
 185     // Data for the decision in which field a "Found" is accepted
 186     css::uno::Any  m_aPreviousLocBookmark;     // position of the last finding
 187     FieldCollection::iterator   m_iterPreviousLocField;     // field of the last finding
 188
 189     // Communication with the thread that does the actual searching
 190     OUString            m_strSearchExpression;              // forward direction
 191     SearchFor      m_eSearchForType;                   // ditto
 192     SearchResult       m_srResult;                         // backward direction
 193
 194     // The link we broadcast the progress and the result to
 195     Link<const FmSearchProgress*,void>  m_aProgressHandler;
 196     std::atomic<bool>   m_bCancelAsynchRequest;     // should be cancelled?
 197
 198     // parameters for the search
 199     bool        m_bSearchingCurrently : 1;      // is an (asynchronous) search running?
 200     bool        m_bFormatter : 1;       // use field formatting
 201     bool        m_bForward : 1;         // direction
 202     bool        m_bWildcard : 1;        // wildcard search
 203     bool        m_bRegular : 1;         // regular expression
 204     bool        m_bLevenshtein : 1;     // Levenshtein search
 205     bool        m_bTransliteration : 1; // Levenshtein search
 206
 207     bool        m_bLevRelaxed : 1;      // parameters for Levenshtein search
 208     sal_uInt16  m_nLevOther;
 209     sal_uInt16  m_nLevShorter;
 210     sal_uInt16  m_nLevLonger;
 211
 212     sal_uInt16  m_nPosition;            // if not regular or levenshtein, then one of the MATCHING_... values
 213
 214     TransliterationFlags m_nTransliterationFlags;
 215
 216
 217 // member access
 218 private:
 219     SVX_DLLPRIVATE bool CancelRequested();      // provides a through m_aCancelAsynchAccess backed interpretation of m_bCancelAsynchRequest
 220
 221 public:
 222     void        SetCaseSensitive(bool bSet);
 223     bool        GetCaseSensitive() const;
 224
 225     void        SetFormatterUsing(bool bSet);   // this is somewhat more extensive, so no inline ... here
 226     bool        GetFormatterUsing() const           { return m_bFormatter; }
 227
 228     void        SetDirection(bool bForward)     { m_bForward = bForward; }
 229     bool        GetDirection() const                { return m_bForward; }
 230
 231     void        SetWildcard(bool bSet)          { m_bWildcard = bSet; }
 232     bool        GetWildcard() const                 { return m_bWildcard; }
 233
 234     void        SetRegular(bool bSet)           { m_bRegular = bSet; }
 235     bool        GetRegular() const                  { return m_bRegular; }
 236
 237     void        SetLevenshtein(bool bSet)       { m_bLevenshtein = bSet; }
 238     bool        GetLevenshtein() const              { return m_bLevenshtein; }
 239
 240     void        SetIgnoreWidthCJK(bool bSet);
 241     bool        GetIgnoreWidthCJK() const;
 242
 243     void        SetTransliteration(bool bSet)   { m_bTransliteration = bSet; }
 244     bool        GetTransliteration() const          { return m_bTransliteration; }
 245
 246     void        SetLevRelaxed(bool bSet)        { m_bLevRelaxed = bSet; }
 247     bool        GetLevRelaxed() const               { return m_bLevRelaxed; }
 248     void        SetLevOther(sal_uInt16 nHowMuch)    { m_nLevOther = nHowMuch; }
 249     sal_uInt16  GetLevOther() const                 { return m_nLevOther; }
 250     void        SetLevShorter(sal_uInt16 nHowMuch)  { m_nLevShorter = nHowMuch; }
 251     sal_uInt16  GetLevShorter() const               { return m_nLevShorter; }
 252     void        SetLevLonger(sal_uInt16 nHowMuch)   { m_nLevLonger = nHowMuch; }
 253     sal_uInt16  GetLevLonger() const                { return m_nLevLonger; }
 254     // all Lev. values will only be considered in case of m_bLevenshtein==sal_True
 255
 256     void        SetTransliterationFlags(TransliterationFlags _nFlags)  { m_nTransliterationFlags = _nFlags; }
 257     TransliterationFlags
 258                 GetTransliterationFlags() const             { return m_nTransliterationFlags; }
 259
 260     void    SetPosition(sal_uInt16 nValue)      { m_nPosition = nValue; }
 261     sal_uInt16  GetPosition() const             { return m_nPosition; }
 262     // position will be ignored in case of m_bWildCard==sal_True
 263
 264 public:
 265     /** two constructs, both analogical to FmSearchDialog, therefore look this up for explanations...
 266         xCursor has to implement css::data::DatabaseCursor service  each time.
 267         If eMode == SM_USETHREAD, a ProgressHandler should be set, because in this case the result forwarding will be done
 268         by this handler.
 269         If eMode != SM_USETHREAD, SearchNext and StarOver won't return, until the search has finished (independently of its
 270         success), only then the result can be requested. If additionally the ProgressHandler is set, it will be called for
 271         every record as well as at the end of the search.
 272     */
 273     FmSearchEngine(
 274         const css::uno::Reference< css::uno::XComponentContext >& _rxContext,
 275         const css::uno::Reference< css::sdbc::XResultSet >& xCursor,
 276         const OUString& strVisibleFields,
 277         const InterfaceArray& arrFields);
 278
 279     /** the link will be called on every record and after the completion of the search, the parameter is a pointer to
 280         a FmSearchProgress structure
 281         the handler should be in any case thread-safe
 282     */
 283     void SetProgressHandler(Link<const FmSearchProgress*,void> aHdl) { m_aProgressHandler = aHdl; }
 284
 285     /// search for the next appearance (for nDirection values check DIRECTION_*-defines)
 286     void SearchNext(const OUString& strExpression);
 287     /// analogous, search for "NULL" (_bSearchForNull==sal_True) or "not NULL"
 288     void SearchNextSpecial(bool _bSearchForNull);
 289     /// search for the next appearance, dependent on nDirection from the start or end
 290     void StartOver(const OUString& strExpression);
 291     /// analogous, search for "NULL" (_bSearchForNull==sal_True) or "not NULL"
 292     void StartOverSpecial(bool _bSearchForNull);
 293     /// invalidate previous search reference
 294     void InvalidatePreviousLoc();
 295
 296     /** rebuilds m_arrUsedFields (nFieldIndex==-1 means all fields, otherwise it specifies the field index)
 297         if bForce is not set, nothing will happen in case of nFieldIndex == m_nCurrentFieldIndex
 298         (calls InvalidatePreviousLoc)
 299     */
 300     void RebuildUsedFields(sal_Int32 nFieldIndex, bool bForce = false);
 301     OUString FormatField(sal_Int32 nWhich);
 302
 303     /// returns directly; once it was really aborted, ProgressHandler is called with STATE_CANCELED
 304     void CancelSearch();
 305
 306     /** only valid, if not an (asynchronous) search is running, the next search will then be executed
 307         on top of the new iterator with the new parameter
 308     */
 309     void SwitchToContext(const css::uno::Reference< css::sdbc::XResultSet >& xCursor, const OUString& strVisibleFields, const InterfaceArray& arrFields,
 310         sal_Int32 nFieldIndex);
 311
 312 private:
 313     void Init(const OUString& strVisibleFields);
 314
 315     void SearchNextImpl();
 316     // this Impl method is running in SearchThread
 317
 318     // start a thread-search (or call SearchNextImpl directly, depending on the search mode)
 319     void ImplStartNextSearch();
 320
 321     SVX_DLLPRIVATE void fillControlTexts(const InterfaceArray& arrFields);
 322
 323     // three methods implementing a complete search loop (null/not null, wildcard, SearchText)
 324     // (they all have some code in common, but with this solution we have to do a distinction only once per search (before
 325     // starting the loop), not in every loop step
 326     SVX_DLLPRIVATE SearchResult SearchSpecial(bool _bSearchForNull, sal_Int32& nFieldPos, FieldCollection::iterator& iterFieldLoop,
 327         const FieldCollection::iterator& iterBegin, const FieldCollection::iterator& iterEnd);
 328     SVX_DLLPRIVATE SearchResult SearchWildcard(std::u16string_view strExpression, sal_Int32& nFieldPos, FieldCollection::iterator& iterFieldLoop,
 329         const FieldCollection::iterator& iterBegin, const FieldCollection::iterator& iterEnd);
 330     SVX_DLLPRIVATE SearchResult SearchRegularApprox(const OUString& strExpression, sal_Int32& nFieldPos, FieldCollection::iterator& iterFieldLoop,
 331         const FieldCollection::iterator& iterBegin, const FieldCollection::iterator& iterEnd);
 332
 333     SVX_DLLPRIVATE void PropagateProgress(bool _bDontPropagateOverflow);
 334     // call the ProgressHandler with STATE_PROGRESS and the current position of the search iterator
 335
 336     // helpers, that are needed several times
 337     SVX_DLLPRIVATE bool MoveCursor();
 338     // moves m_xSearchIterator with respect to direction/overflow cursor
 339     SVX_DLLPRIVATE bool MoveField(sal_Int32& nPos, FieldCollection::iterator& iter, const FieldCollection::iterator& iterBegin, const FieldCollection::iterator& iterEnd);
 340     // moves the iterator with respect to the direction/overflow iterator/overflow cursor
 341     SVX_DLLPRIVATE void BuildAndInsertFieldInfo(const css::uno::Reference< css::container::XIndexAccess >& xAllFields, sal_Int32 nField);
 342
 343     void OnSearchTerminated();
 344     // is used by SearchThread, after the return from this handler the thread removes itself
 345     DECL_DLLPRIVATE_LINK(OnNewRecordCount, sal_Int32, void);
 346 };
 347
 348 #endif // INCLUDED_SVX_FMSRCIMP_HXX
 349
 350 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */