include/wx/helpbase.h

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        helpbase.h
   3 // Purpose:     Help system base classes
   4 // Author:      Julian Smart
   5 // Modified by:
   6 // Created:     04/01/98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Julian Smart and Markus Holzem
   9 // Licence:     wxWindows license
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #ifndef _WX_HELPBASEH__
  13 #define _WX_HELPBASEH__
  14
  15 #ifdef __GNUG__
  16 #pragma interface "helpbase.h"
  17 #endif
  18
  19 #include "wx/defs.h"
  20
  21 #if wxUSE_HELP
  22
  23 #include "wx/object.h"
  24 #include "wx/string.h"
  25 #include "wx/gdicmn.h"
  26 #include "wx/frame.h"
  27
  28 // Flags for SetViewer
  29 #define wxHELP_NETSCAPE     1
  30
  31 // Defines the API for help controllers
  32 class WXDLLEXPORT wxHelpControllerBase: public wxObject
  33 {
  34     DECLARE_CLASS(wxHelpControllerBase)
  35
  36 public:
  37     inline wxHelpControllerBase() {}
  38     inline ~wxHelpControllerBase() {};
  39
  40     // Must call this to set the filename and server name.
  41     // server is only required when implementing TCP/IP-based
  42     // help controllers.
  43     virtual bool Initialize(const wxString& WXUNUSED(file), int WXUNUSED(server) ) { return FALSE; }
  44     virtual bool Initialize(const wxString& WXUNUSED(file)) { return FALSE; }
  45
  46     // Set viewer: only relevant to some kinds of controller
  47     virtual void SetViewer(const wxString& WXUNUSED(viewer), long WXUNUSED(flags) = 0) {}
  48
  49     // If file is "", reloads file given  in Initialize
  50     virtual bool LoadFile(const wxString& file = "") = 0;
  51
  52     // Displays the contents
  53     virtual bool DisplayContents(void) = 0;
  54
  55     // Display the given section
  56     virtual bool DisplaySection(int sectionNo) = 0;
  57
  58     // Display the section using a context id
  59     virtual bool DisplayContextPopup(int WXUNUSED(contextId)) { return FALSE; };
  60
  61     // Display the text in a popup, if possible
  62     virtual bool DisplayTextPopup(const wxString& WXUNUSED(text), const wxPoint& WXUNUSED(pos)) { return FALSE; };
  63
  64     // By default, uses KeywordSection to display a topic. Implementations
  65     // may override this for more specific behaviour.
  66     virtual bool DisplaySection(const wxString& section) { return KeywordSearch(section); };
  67     virtual bool DisplayBlock(long blockNo) = 0;
  68     virtual bool KeywordSearch(const wxString& k) = 0;
  69     /// Allows one to override the default settings for the help frame.
  70     virtual void SetFrameParameters(const wxString& WXUNUSED(title),
  71         const wxSize& WXUNUSED(size),
  72         const wxPoint& WXUNUSED(pos) = wxDefaultPosition,
  73         bool WXUNUSED(newFrameEachTime) = FALSE)
  74     {
  75         // does nothing by default
  76     }
  77     /// Obtains the latest settings used by the help frame and the help
  78     /// frame.
  79     virtual wxFrame *GetFrameParameters(wxSize *WXUNUSED(size) = NULL,
  80         wxPoint *WXUNUSED(pos) = NULL,
  81         bool *WXUNUSED(newFrameEachTime) = NULL)
  82     {
  83         return (wxFrame*) NULL;// does nothing by default
  84     }
  85
  86     virtual bool Quit(void) = 0;
  87     virtual void OnQuit(void) {};
  88 };
  89
  90 #endif // wxUSE_HELP
  91
  92 #endif
  93 // _WX_HELPBASEH__