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 #ifdef __GNUG__
  16 #pragma interface
  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
  28 //--------------------------------------------------------------------------------
  29 // helper classes & structs
  30 //--------------------------------------------------------------------------------
  31
  32 class WXDLLEXPORT wxHtmlBookRecord : public wxObject
  33 {
  34 public:
  35     wxHtmlBookRecord(const wxString& basepath, const wxString& title,
  36                      const wxString& start) {
  37         m_BasePath = basepath; m_Title = title; m_Start = start;
  38         // for debugging, give the contents index obvious default values
  39         contents_start = contents_end = -1;
  40     }
  41     wxString GetTitle() const {return m_Title;}
  42     wxString GetStart() const {return m_Start;}
  43     wxString GetBasePath() const {return m_BasePath;}
  44     /* SetContentsRange: store in the bookrecord where in the index/contents lists the
  45      * book's records are stored. This to facilitate searching in a specific book.
  46      * This code will have to be revised when loading/removing books becomes dynamic.
  47      * (as opposed to appending only)
  48      * Note that storing index range is pointless, because the index is alphab. sorted. */
  49     void SetContentsRange(int start, int end) { contents_start = start; contents_end = end; }
  50     int GetContentsStart() const { return contents_start; }
  51     int GetContentsEnd() const { return contents_end; }
  52 protected:
  53     wxString m_BasePath;
  54     wxString m_Title;
  55     wxString m_Start;
  56     int contents_start;
  57     int contents_end;
  58 };
  59
  60
  61 WX_DECLARE_EXPORTED_OBJARRAY(wxHtmlBookRecord, wxHtmlBookRecArray);
  62
  63
  64 typedef struct
  65 {
  66     short int m_Level;
  67     int m_ID;
  68     char* m_Name;
  69     char* m_Page;
  70     wxHtmlBookRecord *m_Book;
  71 } wxHtmlContentsItem;
  72
  73 //------------------------------------------------------------------------------
  74 // wxSearchEngine
  75 //                  This class takes input streams and scans them for occurence
  76 //                  of keyword(s)
  77 //------------------------------------------------------------------------------
  78 class WXDLLEXPORT wxSearchEngine : public wxObject
  79 {
  80 private:
  81     char *m_Keyword;
  82
  83 public:
  84     wxSearchEngine() : wxObject() {m_Keyword = NULL;}
  85     ~wxSearchEngine() {if (m_Keyword) free(m_Keyword);}
  86
  87     virtual void LookFor(const wxString& keyword);
  88     // Sets the keyword we will be searching for
  89
  90     virtual bool Scan(wxInputStream *stream);
  91     // Scans the stream for the keyword.
  92     // Returns TRUE if the stream contains keyword, fALSE otherwise
  93 };
  94
  95 class wxHtmlHelpData;
  96
  97 // State information of a search action. I'd have prefered to make this a nested
  98 // class inside wxHtmlHelpData, but that's against coding standards :-(
  99 // Never construct this class yourself, obtain a copy from
 100 // wxHtmlHelpData::PrepareKeywordSearch(const wxString& key)
 101 class WXDLLEXPORT wxHtmlSearchStatus
 102 {
 103 public:
 104     // constructor; supply wxHtmlHelpData ptr, the keyword and (optionally) the
 105     // title of the book to search. By default, all books are searched.
 106     wxHtmlSearchStatus(wxHtmlHelpData* base, const wxString& keyword,
 107                        const wxString& book = wxEmptyString);
 108     bool Search(); // do the next iteration
 109     bool IsActive() { return m_Active; }
 110     int GetCurIndex() { return m_CurIndex; }
 111     int GetMaxIndex() { return m_MaxIndex; }
 112     const wxString& GetName() { return m_Name; }
 113     wxHtmlContentsItem* GetContentsItem() { return m_ContentsItem; }
 114 private:
 115     wxHtmlHelpData* m_Data;
 116     wxSearchEngine m_Engine;
 117     wxString m_Keyword, m_Name, m_LastPage;
 118     wxHtmlContentsItem* m_ContentsItem;
 119     bool m_Active; // search is not finished
 120     int m_CurIndex; // where we are now
 121     int m_MaxIndex; // number of files we search
 122     // For progress bar: 100*curindex/maxindex = % complete
 123 };
 124
 125 class WXDLLEXPORT wxHtmlHelpData : public wxObject
 126 {
 127     DECLARE_DYNAMIC_CLASS(wxHtmlHelpData)
 128
 129     friend class wxHtmlSearchStatus;
 130
 131 public:
 132     wxHtmlHelpData();
 133     ~wxHtmlHelpData();
 134
 135     void SetTempDir(const wxString& path);
 136     // Sets directory where temporary files are stored.
 137     // These temp files are index & contents file in binary (much faster to read)
 138     // form. These files are NOT deleted on program's exit.
 139
 140     bool AddBook(const wxString& book);
 141     // Adds new book. 'book' is location of .htb file (stands for "html book").
 142     // See documentation for details on its format.
 143     // Returns success.
 144     bool AddBookParam(const wxString& title, const wxString& contfile,
 145                       const wxString& indexfile=wxEmptyString,
 146                       const wxString& deftopic=wxEmptyString,
 147                       const wxString& path=wxEmptyString);
 148
 149     // Some accessing stuff
 150     wxString FindPageByName(const wxString& page);
 151     // returns URL of page on basis of (file)name
 152     wxString FindPageById(int id);
 153     // returns URL of page on basis of MS id
 154
 155     const wxHtmlBookRecArray& GetBookRecArray() { return m_BookRecords; }
 156     wxHtmlContentsItem* GetContents() { return m_Contents; }
 157     int GetContentsCnt() { return m_ContentsCnt; }
 158     wxHtmlContentsItem* GetIndex() { return m_Index; }
 159     int GetIndexCnt() { return m_IndexCnt; }
 160
 161 protected:
 162     wxString m_TempPath;
 163
 164     wxHtmlBookRecArray m_BookRecords;
 165     // each book has one record in this array
 166     wxHtmlContentsItem* m_Contents;
 167     int m_ContentsCnt;
 168     // list of all available books and pages.
 169     wxHtmlContentsItem* m_Index;
 170     int m_IndexCnt;
 171     // list of index items
 172
 173 protected:
 174     bool LoadMSProject(wxHtmlBookRecord *book, wxFileSystem& fsys,
 175                        const wxString& indexfile, const wxString& contentsfile);
 176     // Imports .hhp files (MS HTML Help Workshop)
 177     bool LoadCachedBook(wxHtmlBookRecord *book, wxInputStream *f);
 178     // Reads binary book
 179     bool SaveCachedBook(wxHtmlBookRecord *book, wxOutputStream *f);
 180     // Writes binary book
 181 };
 182
 183 #endif
 184
 185 #endif