include/wx/msw/mimetype.h

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        wx/msw/mimetype.h
   3 // Purpose:     classes and functions to manage MIME types
   4 // Author:      Vadim Zeitlin
   5 // Modified by:
   6 // Created:     23.09.98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) 1998 Vadim Zeitlin <zeitlin@dptmaths.ens-cachan.fr>
   9 // Licence:     wxWindows licence (part of wxExtra library)
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #ifndef _MIMETYPE_IMPL_H
  13 #define _MIMETYPE_IMPL_H
  14
  15 #include "wx/defs.h"
  16
  17 #if wxUSE_MIMETYPE
  18
  19 #include "wx/mimetype.h"
  20
  21 // ----------------------------------------------------------------------------
  22 // wxFileTypeImpl is the MSW version of wxFileType, this is a private class
  23 // and is never used directly by the application
  24 // ----------------------------------------------------------------------------
  25
  26 class WXDLLIMPEXP_BASE wxFileTypeImpl
  27 {
  28 public:
  29     // ctor
  30     wxFileTypeImpl() { }
  31
  32     // one of these Init() function must be called (ctor can't take any
  33     // arguments because it's common)
  34
  35         // initialize us with our file type name and extension - in this case
  36         // we will read all other data from the registry
  37     void Init(const wxString& strFileType, const wxString& ext);
  38
  39     // implement accessor functions
  40     bool GetExtensions(wxArrayString& extensions);
  41     bool GetMimeType(wxString *mimeType) const;
  42     bool GetMimeTypes(wxArrayString& mimeTypes) const;
  43     bool GetIcon(wxIconLocation *iconLoc) const;
  44     bool GetDescription(wxString *desc) const;
  45     bool GetOpenCommand(wxString *openCmd,
  46                         const wxFileType::MessageParameters& params) const;
  47     bool GetPrintCommand(wxString *printCmd,
  48                          const wxFileType::MessageParameters& params) const;
  49
  50     size_t GetAllCommands(wxArrayString * verbs, wxArrayString * commands,
  51                           const wxFileType::MessageParameters& params) const;
  52
  53     bool Unassociate();
  54
  55     // set an arbitrary command, ask confirmation if it already exists and
  56     // overwriteprompt is true
  57     bool SetCommand(const wxString& cmd,
  58                     const wxString& verb,
  59                     bool overwriteprompt = true);
  60
  61     bool SetDefaultIcon(const wxString& cmd = wxEmptyString, int index = 0);
  62
  63     // this is called  by Associate
  64     bool SetDescription (const wxString& desc);
  65
  66 private:
  67     // helper function: reads the command corresponding to the specified verb
  68     // from the registry (returns an empty string if not found)
  69     wxString GetCommand(const wxChar *verb) const;
  70
  71     // get the registry path for the given verb
  72     wxString GetVerbPath(const wxString& verb) const;
  73
  74     // check that the registry key for our extension exists, create it if it
  75     // doesn't, return false if this failed
  76     bool EnsureExtKeyExists();
  77
  78     wxString m_strFileType,         // may be empty
  79              m_ext;
  80
  81     // these methods are not publicly accessible (as wxMimeTypesManager
  82     // doesn't know about them), and should only be called by Unassociate
  83
  84     bool RemoveOpenCommand();
  85     bool RemoveCommand(const wxString& verb);
  86     bool RemoveMimeType();
  87     bool RemoveDefaultIcon();
  88     bool RemoveDescription();
  89 };
  90
  91 class WXDLLIMPEXP_BASE wxMimeTypesManagerImpl
  92 {
  93 public:
  94     // nothing to do here, we don't load any data but just go and fetch it from
  95     // the registry when asked for
  96     wxMimeTypesManagerImpl() { }
  97
  98     // implement containing class functions
  99     wxFileType *GetFileTypeFromExtension(const wxString& ext);
 100     wxFileType *GetOrAllocateFileTypeFromExtension(const wxString& ext);
 101     wxFileType *GetFileTypeFromMimeType(const wxString& mimeType);
 102
 103     size_t EnumAllFileTypes(wxArrayString& mimetypes);
 104
 105     // this are NOPs under Windows
 106     bool ReadMailcap(const wxString& WXUNUSED(filename), bool WXUNUSED(fallback) = true)
 107         { return true; }
 108     bool ReadMimeTypes(const wxString& WXUNUSED(filename))
 109         { return true; }
 110
 111     // create a new filetype association
 112     wxFileType *Associate(const wxFileTypeInfo& ftInfo);
 113
 114     // create a new filetype with the given name and extension
 115     wxFileType *CreateFileType(const wxString& filetype, const wxString& ext);
 116 };
 117
 118 #endif // wxUSE_MIMETYPE
 119
 120 #endif
 121   //_MIMETYPE_IMPL_H
 122