// Purpose: classes and functions to manage MIME types
// Author: Vadim Zeitlin
// Modified by:
+// Chris Elliott (biol75@york.ac.uk) 5 Dec 00: write support for Win32
// Created: 23.09.98
// RCS-ID: $Id$
// Copyright: (c) 1998 Vadim Zeitlin <zeitlin@dptmaths.ens-cachan.fr>
// Licence: wxWindows license (part of wxExtra library)
/////////////////////////////////////////////////////////////////////////////
-#ifndef _MIMETYPE_H
-#define _MIMETYPE_H
+#ifndef _WX_MIMETYPE_H_
+#define _WX_MIMETYPE_H_
-// fwd decls
-class wxIcon;
-class wxFileTypeImpl;
-class wxMimeTypesManagerImpl;
+#ifdef __GNUG__
+ #pragma interface "mimetypebase.h"
+#endif // __GNUG__
+
+// ----------------------------------------------------------------------------
+// headers and such
+// ----------------------------------------------------------------------------
+
+#include "wx/defs.h"
// the things we really need
#include "wx/string.h"
+#include "wx/dynarray.h"
+
+// fwd decls
+class WXDLLEXPORT wxIcon;
+class WXDLLEXPORT wxFileTypeImpl;
+class WXDLLEXPORT wxMimeTypesManagerImpl;
+
+/*
+ TODO: would it be more convenient to have this class?
+
+class WXDLLEXPORT wxMimeType : public wxString
+{
+public:
+ // all string ctors here
+
+ wxString GetType() const { return BeforeFirst(_T('/')); }
+ wxString GetSubType() const { return AfterFirst(_T('/')); }
+
+ void SetSubType(const wxString& subtype)
+ {
+ *this = GetType() + _T('/') + subtype;
+ }
+
+ bool Matches(const wxMimeType& wildcard)
+ {
+ // implement using wxMimeTypesManager::IsOfType()
+ }
+};
+
+*/
+
+// ----------------------------------------------------------------------------
+// wxFileTypeInfo: static container of information accessed via wxFileType.
+//
+// This class is used with wxMimeTypesManager::AddFallbacks() and Associate()
+// ----------------------------------------------------------------------------
+
+class WXDLLEXPORT wxFileTypeInfo
+{
+public:
+ // ctors
+ // a normal item
+ wxFileTypeInfo(const char *mimeType,
+ const char *openCmd,
+ const char *printCmd,
+ const char *desc,
+ // the other parameters form a NULL terminated list of
+ // extensions
+ ...);
+
+ // invalid item - use this to terminate the array passed to
+ // wxMimeTypesManager::AddFallbacks
+ wxFileTypeInfo() { }
+
+ // test if this object can be used
+ bool IsValid() const { return !m_mimeType.IsEmpty(); }
+
+ // setters
+ // set the icon info
+ void SetIcon(const wxString& iconFile, int iconIndex = 0)
+ {
+ m_iconFile = iconFile;
+ m_iconIndex = iconIndex;
+ }
+ // set the short desc
+ void SetShortDesc(const wxString& shortDesc) { m_shortDesc = shortDesc; }
+
+ // accessors
+ // get the MIME type
+ const wxString& GetMimeType() const { return m_mimeType; }
+ // get the open command
+ const wxString& GetOpenCommand() const { return m_openCmd; }
+ // get the print command
+ const wxString& GetPrintCommand() const { return m_printCmd; }
+ // get the short description (only used under Win32 so far)
+ const wxString& GetShortDesc() const { return m_shortDesc; }
+ // get the long, user visible description
+ const wxString& GetDescription() const { return m_desc; }
+ // get the array of all extensions
+ const wxArrayString& GetExtensions() const { return m_exts; }
+ // get the icon info
+ const wxString& GetIconFile() const { return m_iconFile; }
+ int GetIconIndex() const { return m_iconIndex; }
+
+private:
+ wxString m_mimeType, // the MIME type in "type/subtype" form
+ m_openCmd, // command to use for opening the file (%s allowed)
+ m_printCmd, // command to use for printing the file (%s allowed)
+ m_shortDesc, // a short string used in the registry
+ m_desc; // a free form description of this file type
+ // icon stuff
+ wxString m_iconFile; // the file containing the icon
+ int m_iconIndex; // icon index in this file
+
+ wxArrayString m_exts; // the extensions which are mapped on this filetype
+
+#if 0 // TODO
+ // the additional (except "open" and "print") command names and values
+ wxArrayString m_commandNames,
+ m_commandValues;
+#endif // 0
+};
+
+WX_DECLARE_EXPORTED_OBJARRAY(wxFileTypeInfo, wxArrayFileTypeInfo);
+
+// ----------------------------------------------------------------------------
+// wxFileType: gives access to all information about the files of given type.
+//
// This class holds information about a given "file type". File type is the
// same as MIME type under Unix, but under Windows it corresponds more to an
// extension than to MIME type (in fact, several extensions may correspond to a
// file type). This object may be created in many different ways and depending
// on how it was created some fields may be unknown so the return value of all
// the accessors *must* be checked!
-class wxFileType
+// ----------------------------------------------------------------------------
+
+class WXDLLEXPORT wxFileType
{
-friend wxMimeTypesManagerImpl; // it has access to m_impl
+friend class WXDLLEXPORT wxMimeTypesManagerImpl; // it has access to m_impl
public:
// An object of this class must be passed to Get{Open|Print}Command. The
const wxString& GetMimeType() const { return m_mimetype; }
// override this function in derived class
- virtual wxString GetParamValue(const wxString& WXUNUSED(paramName)) const
- { return ""; }
+ virtual wxString GetParamValue(const wxString& WXUNUSED(name)) const
+ { return wxEmptyString; }
// virtual dtor as in any base class
virtual ~MessageParameters() { }
wxString m_filename, m_mimetype;
};
+ // ctor from static data
+ wxFileType(const wxFileTypeInfo& ftInfo);
+
// accessors: all of them return true if the corresponding information
// could be retrieved/found, false otherwise (and in this case all [out]
// parameters are unchanged)
// return the MIME type for this file type
bool GetMimeType(wxString *mimeType) const;
+ bool GetMimeTypes(wxArrayString& mimeTypes) const;
// fill passed in array with all extensions associated with this file
// type
bool GetExtensions(wxArrayString& extensions);
- // get the icon corresponding to this file type
- bool GetIcon(wxIcon *icon) const;
+ // get the icon corresponding to this file type, the name of the file
+ // where the icon resides is return in iconfile if !NULL and its index
+ // in this file (Win-only) is in iconIndex
+ bool GetIcon(wxIcon *icon,
+ wxString *iconFile = NULL,
+ int *iconIndex = NULL) const;
// get a brief file type description ("*.txt" => "text document")
bool GetDescription(wxString *desc) const;
bool GetPrintCommand(wxString *printCmd,
const MessageParameters& params) const;
+
+ // return the number of commands defined for this file type, 0 if none
+ size_t GetAllCommands(wxArrayString *verbs, wxArrayString *commands,
+ const wxFileType::MessageParameters& params) const;
+
+ // remove the association for this filetype from the system MIME database:
+ // notice that it will only work if the association is defined in the user
+ // file/registry part, we will never modify the system-wide settings
+ bool Unassociate();
+
// operations
// expand a string in the format of GetOpenCommand (which may contain
// '%s' and '%t' format specificators for the file name and mime type
wxFileType(const wxFileType&);
wxFileType& operator=(const wxFileType&);
+ // the static container of wxFileType data: if it's not NULL, it means that
+ // this object is used as fallback only
+ const wxFileTypeInfo *m_info;
+
+ // the object which implements the real stuff like reading and writing
+ // to/from system MIME database
wxFileTypeImpl *m_impl;
};
+// ----------------------------------------------------------------------------
+// wxMimeTypesManager: interface to system MIME database.
+//
// This class accesses the information about all known MIME types and allows
// the application to retrieve information (including how to handle data of
// given type) about them.
-//
-// NB: currently it doesn't support modifying MIME database (read-only access).
-class wxMimeTypesManager
+// ----------------------------------------------------------------------------
+
+class WXDLLEXPORT wxMimeTypesManager
{
public:
+ // static helper functions
+ // -----------------------
+
+ // check if the given MIME type is the same as the other one: the
+ // second argument may contain wildcards ('*'), but not the first. If
+ // the types are equal or if the mimeType matches wildcard the function
+ // returns TRUE, otherwise it returns FALSE
+ static bool IsOfType(const wxString& mimeType, const wxString& wildcard);
+
// ctor
wxMimeTypesManager();
// get file type from MIME type (in format <category>/<format>)
wxFileType *GetFileTypeFromMimeType(const wxString& mimeType);
- // other operations
+ // other operations: return TRUE if there were no errors or FALSE if there
+ // were some unreckognized entries (the good entries are always read anyhow)
// read in additional file (the standard ones are read automatically)
// in mailcap format (see mimetype.cpp for description)
- void ReadMailcap(const wxString& filename);
+ //
+ // 'fallback' parameter may be set to TRUE to avoid overriding the
+ // settings from other, previously parsed, files by this one: normally,
+ // the files read most recently would override the older files, but with
+ // fallback == TRUE this won't happen
+ bool ReadMailcap(const wxString& filename, bool fallback = FALSE);
// read in additional file in mime.types format
- void ReadMimeTypes(const wxString& filename);
+ bool ReadMimeTypes(const wxString& filename);
+
+ // enumerate all known MIME types
+ //
+ // returns the number of retrieved file types
+ size_t EnumAllFileTypes(wxArrayString& mimetypes);
+
+ // these functions can be used to provide default values for some of the
+ // MIME types inside the program itself (you may also use
+ // ReadMailcap(filenameWithDefaultTypes, TRUE /* use as fallback */) to
+ // achieve the same goal, but this requires having this info in a file).
+ //
+ // The filetypes array should be terminated by either NULL entry or an
+ // invalid wxFileTypeInfo (i.e. the one created with default ctor)
+ void AddFallbacks(const wxFileTypeInfo *filetypes);
+ void AddFallback(const wxFileTypeInfo& ft) { m_fallbacks.Add(ft); }
+
+ // create or remove associations
+
+ // create a new association using the fields of wxFileTypeInfo (at least
+ // the MIME type and the extension should be set)
+ wxFileType *Associate(const wxFileTypeInfo& ftInfo);
+
+ // undo Associate()
+ bool Unassociate(wxFileType *ft) { return ft->Unassociate(); }
// dtor (not virtual, shouldn't be derived from)
~wxMimeTypesManager();
wxMimeTypesManager(const wxMimeTypesManager&);
wxMimeTypesManager& operator=(const wxMimeTypesManager&);
+ // the fallback info which is used if the information is not found in the
+ // real system database
+ wxArrayFileTypeInfo m_fallbacks;
+
+ // the object working with the system MIME database
wxMimeTypesManagerImpl *m_impl;
+
+ // if m_impl is NULL, create one
+ void EnsureImpl();
+
+ friend class wxMimeTypeCmnModule;
};
-#endif //_MIMETYPE_H
+
+// ----------------------------------------------------------------------------
+// global variables
+// ----------------------------------------------------------------------------
+
+// the default mime manager for wxWindows programs
+WXDLLEXPORT_DATA(extern wxMimeTypesManager *) wxTheMimeTypesManager;
+
+#endif
+ //_WX_MIMETYPE_H_
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