include/wx/html/helpdata.h

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        helpdata.h
   3 // Purpose:     wxHtmlHelpData
   4 // Notes:       Based on htmlhelp.cpp, implementing a monolithic
   5 //              HTML Help controller class,  by Vaclav Slavik
   6 // Author:      Harm van der Heijden and Vaclav Slavik
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Harm van der Heijden and Vaclav Slavik
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #ifndef _WX_HELPDATA_H_
  13 #define _WX_HELPDATA_H_
  14
  15 #if defined(__GNUG__) && !defined(__APPLE__)
  16 #pragma interface "helpdata.h"
  17 #endif
  18
  19 #include "wx/defs.h"
  20
  21 #if wxUSE_HTML
  22
  23 #include "wx/object.h"
  24 #include "wx/string.h"
  25 #include "wx/filesys.h"
  26 #include "wx/dynarray.h"
  27 #include "wx/font.h"
  28
  29 class WXDLLEXPORT wxHtmlHelpData;
  30
  31 //--------------------------------------------------------------------------------
  32 // helper classes & structs
  33 //--------------------------------------------------------------------------------
  34
  35 class WXDLLEXPORT wxHtmlBookRecord
  36 {
  37 public:
  38     wxHtmlBookRecord(const wxString& bookfile, const wxString& basepath,
  39                      const wxString& title, const wxString& start)
  40     {
  41         m_BookFile = bookfile;
  42         m_BasePath = basepath;
  43         m_Title = title;
  44         m_Start = start;
  45         // for debugging, give the contents index obvious default values
  46         m_ContentsStart = m_ContentsEnd = -1;
  47     }
  48     wxString GetBookFile() const { return m_BookFile; }
  49     wxString GetTitle() const { return m_Title; }
  50     wxString GetStart() const { return m_Start; }
  51     wxString GetBasePath() const { return m_BasePath; }
  52     /* SetContentsRange: store in the bookrecord where in the index/contents lists the
  53      * book's records are stored. This to facilitate searching in a specific book.
  54      * This code will have to be revised when loading/removing books becomes dynamic.
  55      * (as opposed to appending only)
  56      * Note that storing index range is pointless, because the index is alphab. sorted. */
  57     void SetContentsRange(int start, int end) { m_ContentsStart = start; m_ContentsEnd = end; }
  58     int GetContentsStart() const { return m_ContentsStart; }
  59     int GetContentsEnd() const { return m_ContentsEnd; }
  60
  61     void SetTitle(const wxString& title) { m_Title = title; }
  62     void SetBasePath(const wxString& path) { m_BasePath = path; }
  63     void SetStart(const wxString& start) { m_Start = start; }
  64
  65     // returns full filename of page (which is part of the book),
  66     // i.e. with book's basePath prepended. If page is already absolute
  67     // path, basePath is _not_ prepended.
  68     wxString GetFullPath(const wxString &page) const;
  69
  70 protected:
  71     wxString m_BookFile;
  72     wxString m_BasePath;
  73     wxString m_Title;
  74     wxString m_Start;
  75     int m_ContentsStart;
  76     int m_ContentsEnd;
  77 };
  78
  79
  80 WX_DECLARE_EXPORTED_OBJARRAY(wxHtmlBookRecord, wxHtmlBookRecArray);
  81
  82
  83 struct wxHtmlContentsItem
  84 {
  85     short int m_Level;
  86     int m_ID;
  87     wxChar* m_Name;
  88     wxChar* m_Page;
  89     wxHtmlBookRecord *m_Book;
  90
  91     // returns full filename of m_Page, i.e. with book's basePath prepended
  92     wxString GetFullPath() const { return m_Book->GetFullPath(m_Page); }
  93 };
  94
  95 //------------------------------------------------------------------------------
  96 // wxHtmlSearchEngine
  97 //                  This class takes input streams and scans them for occurence
  98 //                  of keyword(s)
  99 //------------------------------------------------------------------------------
 100
 101 class WXDLLEXPORT wxHtmlSearchEngine : public wxObject
 102 {
 103 public:
 104     wxHtmlSearchEngine() : wxObject() {m_Keyword = NULL; }
 105     ~wxHtmlSearchEngine() {if (m_Keyword) delete[] m_Keyword; }
 106
 107     // Sets the keyword we will be searching for
 108     virtual void LookFor(const wxString& keyword, bool case_sensitive, bool whole_words_only);
 109
 110     // Scans the stream for the keyword.
 111     // Returns TRUE if the stream contains keyword, fALSE otherwise
 112     virtual bool Scan(const wxFSFile& file);
 113
 114 private:
 115     wxChar *m_Keyword;
 116     bool m_CaseSensitive;
 117     bool m_WholeWords;
 118
 119     DECLARE_NO_COPY_CLASS(wxHtmlSearchEngine)
 120 };
 121
 122
 123 // State information of a search action. I'd have prefered to make this a nested
 124 // class inside wxHtmlHelpData, but that's against coding standards :-(
 125 // Never construct this class yourself, obtain a copy from
 126 // wxHtmlHelpData::PrepareKeywordSearch(const wxString& key)
 127 class WXDLLEXPORT wxHtmlSearchStatus
 128 {
 129 public:
 130     // constructor; supply wxHtmlHelpData ptr, the keyword and (optionally) the
 131     // title of the book to search. By default, all books are searched.
 132     wxHtmlSearchStatus(wxHtmlHelpData* base, const wxString& keyword,
 133                        bool case_sensitive, bool whole_words_only,
 134                        const wxString& book = wxEmptyString);
 135     bool Search();  // do the next iteration
 136     bool IsActive() { return m_Active; }
 137     int GetCurIndex() { return m_CurIndex; }
 138     int GetMaxIndex() { return m_MaxIndex; }
 139     const wxString& GetName() { return m_Name; }
 140     wxHtmlContentsItem* GetContentsItem() { return m_ContentsItem; }
 141
 142 private:
 143     wxHtmlHelpData* m_Data;
 144     wxHtmlSearchEngine m_Engine;
 145     wxString m_Keyword, m_Name;
 146     wxChar *m_LastPage;
 147     wxHtmlContentsItem* m_ContentsItem;
 148     bool m_Active;   // search is not finished
 149     int m_CurIndex;  // where we are now
 150     int m_MaxIndex;  // number of files we search
 151     // For progress bar: 100*curindex/maxindex = % complete
 152
 153     DECLARE_NO_COPY_CLASS(wxHtmlSearchStatus)
 154 };
 155
 156 class WXDLLEXPORT wxHtmlHelpData : public wxObject
 157 {
 158     DECLARE_DYNAMIC_CLASS(wxHtmlHelpData)
 159     friend class wxHtmlSearchStatus;
 160
 161 public:
 162     wxHtmlHelpData();
 163     ~wxHtmlHelpData();
 164
 165     // Sets directory where temporary files are stored.
 166     // These temp files are index & contents file in binary (much faster to read)
 167     // form. These files are NOT deleted on program's exit.
 168     void SetTempDir(const wxString& path);
 169
 170     // Adds new book. 'book' is location of .htb file (stands for "html book").
 171     // See documentation for details on its format.
 172     // Returns success.
 173     bool AddBook(const wxString& book);
 174     bool AddBookParam(const wxFSFile& bookfile,
 175                       wxFontEncoding encoding,
 176                       const wxString& title, const wxString& contfile,
 177                       const wxString& indexfile = wxEmptyString,
 178                       const wxString& deftopic = wxEmptyString,
 179                       const wxString& path = wxEmptyString);
 180
 181     // Some accessing stuff:
 182
 183     // returns URL of page on basis of (file)name
 184     wxString FindPageByName(const wxString& page);
 185     // returns URL of page on basis of MS id
 186     wxString FindPageById(int id);
 187
 188     const wxHtmlBookRecArray& GetBookRecArray() { return m_BookRecords; }
 189     wxHtmlContentsItem* GetContents() { return m_Contents; }
 190     int GetContentsCnt() { return m_ContentsCnt; }
 191     wxHtmlContentsItem* GetIndex() { return m_Index; }
 192     int GetIndexCnt() { return m_IndexCnt; }
 193
 194 protected:
 195     wxString m_TempPath;
 196
 197     wxHtmlBookRecArray m_BookRecords;
 198     // each book has one record in this array:
 199     wxHtmlContentsItem* m_Contents;
 200     int m_ContentsCnt;
 201     wxHtmlContentsItem* m_Index; // list of all available books and pages.
 202     int m_IndexCnt;  // list of index items
 203
 204 protected:
 205     // Imports .hhp files (MS HTML Help Workshop)
 206     bool LoadMSProject(wxHtmlBookRecord *book, wxFileSystem& fsys,
 207                        const wxString& indexfile, const wxString& contentsfile);
 208     // Reads binary book
 209     bool LoadCachedBook(wxHtmlBookRecord *book, wxInputStream *f);
 210     // Writes binary book
 211     bool SaveCachedBook(wxHtmlBookRecord *book, wxOutputStream *f);
 212
 213     DECLARE_NO_COPY_CLASS(wxHtmlHelpData)
 214 };
 215
 216 #endif
 217
 218 #endif