185 lines
4.2 KiB
C++
185 lines
4.2 KiB
C++
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//+---------------------------------------------------------------------------
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//
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// Microsoft Windows
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// Copyright (C) Microsoft Corporation, 1992 - 1998.
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//
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// File: bmkmap.hxx
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//
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// Contents: Book Mark Map for mapping from bookmark to table row
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//
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// Classes: CWidBmkHashEntry
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// CBookMarkMap
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//
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// Functions:
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//
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// History: 11-22-94 srikants Created
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//
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//----------------------------------------------------------------------------
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#pragma once
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#include <twidhash.hxx>
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#include <tblalloc.hxx>
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class CRowIndex;
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//+---------------------------------------------------------------------------
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//
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// Class: CWidBmkHashEntry
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//
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// Purpose: A WorkID hash table entry for the value of a bookmark.
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//
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// History: 09 Nov 1998 AlanW Created from CWidValueHashEntry
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//
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// Notes:
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//
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//----------------------------------------------------------------------------
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class CWidBmkHashEntry : public CWidHashEntry
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{
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public:
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CWidBmkHashEntry( WORKID wid=widInvalid, TBL_OFF value = 0 )
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: CWidHashEntry( wid ), _value(value)
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{
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}
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void SetValue( TBL_OFF value )
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{
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_value = value;
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}
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void Get( WORKID & wid, TBL_OFF & value ) const
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{
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wid = _wid;
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value = _value;
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}
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TBL_OFF Value() const
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{
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return _value;
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}
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private:
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TBL_OFF _value; // The value for the BookMark (hash Value)
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};
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//+---------------------------------------------------------------------------
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//
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// Class: CBookMarkMap
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//
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// Purpose: Maps a BookMark (WorkId) to a row in the row table and
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// a row index.
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//
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// History: 11-22-94 srikants Created
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//
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// Notes:
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//
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//----------------------------------------------------------------------------
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class CBookMarkMap
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{
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public:
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CBookMarkMap( CRowIndex & rowIndex ) : _rowIndex(rowIndex) {}
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BOOL IsBookMarkPresent( WORKID wid );
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void AddBookMark( WORKID wid, TBL_OFF oTableRow );
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void AddReplaceBookMark( WORKID wid, TBL_OFF oTableRow );
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BOOL FindBookMark( WORKID wid, TBL_OFF & obTableRow, ULONG &riRowIndex );
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BOOL FindBookMark( WORKID wid, TBL_OFF & obTableRow );
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BOOL DeleteBookMark( WORKID wid );
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CRowIndex * GetRowIndex() const { return &_rowIndex; }
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void DeleteAllEntries()
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{
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_widHash.DeleteAllEntries();
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}
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private:
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CRowIndex & _rowIndex;
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TWidHashTable<CWidBmkHashEntry> _widHash;
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};
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//+---------------------------------------------------------------------------
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//
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// Function: IsBookMarkPresent
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//
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// Synopsis: Checks if a given book mark is present in the mapping or not.
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//
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// Arguments: [wid] -- WorkId (BookMark) to check.
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//
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// Returns: TRUE if found; FALSE o/w
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//
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// History: 11-23-94 srikants Created
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//
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// Notes:
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//
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//----------------------------------------------------------------------------
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inline BOOL CBookMarkMap::IsBookMarkPresent( WORKID wid )
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{
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return _widHash.IsWorkIdPresent( wid );
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}
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//+---------------------------------------------------------------------------
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//
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// Function: DeleteBookMark
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//
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// Synopsis: Deletes an existing book mark mapping.
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//
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// Arguments: [wid] -- WorkId to delete from the mapping.
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//
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// History: 11-23-94 srikants Created
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//
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// Notes:
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//
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//----------------------------------------------------------------------------
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inline BOOL CBookMarkMap::DeleteBookMark( WORKID wid )
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{
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return _widHash.DeleteWorkId( wid );
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}
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//+---------------------------------------------------------------------------
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//
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// Function: FindBookMark
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//
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// Synopsis: Locates the requested bookmark mapping.
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//
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// Arguments: [wid] -- WorkId to locate.
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// [obTableRow] -- (Output) Offset of the table row in the
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// window.
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//
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// Returns: TRUE if the bookmark was found; FALSE o/w
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//
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// History: 11-23-94 srikants Created
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//
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// Notes:
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//
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//----------------------------------------------------------------------------
|
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inline BOOL CBookMarkMap::FindBookMark( WORKID wid, TBL_OFF & obTableRow )
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{
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CWidBmkHashEntry entry( wid );
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BOOL fFound = _widHash.LookUpWorkId( entry );
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obTableRow = entry.Value();
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return fFound;
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}
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