// 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)
+// Licence: wxWindows licence (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;
+// ----------------------------------------------------------------------------
+// headers and such
+// ----------------------------------------------------------------------------
#include "wx/defs.h"
-#if wxUSE_FILE
+#if wxUSE_MIMETYPE
// the things we really need
#include "wx/string.h"
+#include "wx/dynarray.h"
+#include "wx/arrstr.h"
+
+#include <stdarg.h>
+
+// fwd decls
+class WXDLLIMPEXP_FWD_BASE wxIconLocation;
+class WXDLLIMPEXP_FWD_BASE wxFileTypeImpl;
+class WXDLLIMPEXP_FWD_BASE wxMimeTypesManagerImpl;
+
+// these constants define the MIME informations source under UNIX and are used
+// by wxMimeTypesManager::Initialize()
+enum wxMailcapStyle
+{
+ wxMAILCAP_STANDARD = 1,
+ wxMAILCAP_NETSCAPE = 2,
+ wxMAILCAP_KDE = 4,
+ wxMAILCAP_GNOME = 8,
+
+ wxMAILCAP_ALL = 15
+};
+
+/*
+ TODO: would it be more convenient to have this class?
+
+class WXDLLIMPEXP_BASE wxMimeType : public wxString
+{
+public:
+ // all string ctors here
+
+ wxString GetType() const { return BeforeFirst(wxT('/')); }
+ wxString GetSubType() const { return AfterFirst(wxT('/')); }
+
+ void SetSubType(const wxString& subtype)
+ {
+ *this = GetType() + wxT('/') + subtype;
+ }
+
+ bool Matches(const wxMimeType& wildcard)
+ {
+ // implement using wxMimeTypesManager::IsOfType()
+ }
+};
+
+*/
+
+// wxMimeTypeCommands stores the verbs defined for the given MIME type with
+// their values
+class WXDLLIMPEXP_BASE wxMimeTypeCommands
+{
+public:
+ wxMimeTypeCommands() {}
+
+ wxMimeTypeCommands(const wxArrayString& verbs,
+ const wxArrayString& commands)
+ : m_verbs(verbs),
+ m_commands(commands)
+ {
+ }
+
+ // add a new verb with the command or replace the old value
+ void AddOrReplaceVerb(const wxString& verb, const wxString& cmd);
+ void Add(const wxString& s)
+ {
+ m_verbs.Add(s.BeforeFirst(wxT('=')));
+ m_commands.Add(s.AfterFirst(wxT('=')));
+ }
+
+ // access the commands
+ size_t GetCount() const { return m_verbs.GetCount(); }
+ const wxString& GetVerb(size_t n) const { return m_verbs[n]; }
+ const wxString& GetCmd(size_t n) const { return m_commands[n]; }
+
+ bool HasVerb(const wxString& verb) const
+ { return m_verbs.Index(verb) != wxNOT_FOUND; }
+
+ // returns empty string and wxNOT_FOUND in idx if no such verb
+ wxString GetCommandForVerb(const wxString& verb, size_t *idx = NULL) const;
+
+ // get a "verb=command" string
+ wxString GetVerbCmd(size_t n) const;
+
+private:
+ wxArrayString m_verbs;
+ wxArrayString m_commands;
+};
+
+// ----------------------------------------------------------------------------
+// wxFileTypeInfo: static container of information accessed via wxFileType.
+//
+// This class is used with wxMimeTypesManager::AddFallbacks() and Associate()
+// ----------------------------------------------------------------------------
+
+class WXDLLIMPEXP_BASE wxFileTypeInfo
+{
+private:
+ void DoVarArgInit(const wxString& mimeType,
+ const wxString& openCmd,
+ const wxString& printCmd,
+ const wxString& desc,
+ va_list argptr);
+
+ void VarArgInit(const wxString *mimeType,
+ const wxString *openCmd,
+ const wxString *printCmd,
+ const wxString *desc,
+ // the other parameters form a NULL terminated list of
+ // extensions
+ ...);
+
+public:
+ // NB: This is a helper to get implicit conversion of variadic ctor's
+ // fixed arguments into something that can be passed to VarArgInit().
+ // Do not use, it's used by the ctor only.
+ struct CtorString
+ {
+ CtorString(const char *str) : m_str(str) {}
+ CtorString(const wchar_t *str) : m_str(str) {}
+ CtorString(const wxString& str) : m_str(str) {}
+ CtorString(const wxCStrData& str) : m_str(str) {}
+ CtorString(const wxScopedCharBuffer& str) : m_str(str) {}
+ CtorString(const wxScopedWCharBuffer& str) : m_str(str) {}
+
+ operator const wxString*() const { return &m_str; }
+
+ wxString m_str;
+ };
+
+ // ctors
+
+ // Ctor specifying just the MIME type (which is mandatory), the other
+ // fields can be set later if needed.
+ wxFileTypeInfo(const wxString& mimeType)
+ : m_mimeType(mimeType)
+ {
+ }
+
+ // Ctor allowing to specify the values of all fields at once:
+ //
+ // wxFileTypeInfo(const wxString& mimeType,
+ // const wxString& openCmd,
+ // const wxString& printCmd,
+ // const wxString& desc,
+ // // the other parameters form a list of extensions for this
+ // // file type and should be terminated with wxNullPtr (not
+ // // just NULL!)
+ // ...);
+ WX_DEFINE_VARARG_FUNC_CTOR(wxFileTypeInfo,
+ 4, (const CtorString&,
+ const CtorString&,
+ const CtorString&,
+ const CtorString&),
+ VarArgInit, VarArgInit)
+#ifdef __WATCOMC__
+ // workaround for http://bugzilla.openwatcom.org/show_bug.cgi?id=351
+ WX_VARARG_WATCOM_WORKAROUND_CTOR(
+ wxFileTypeInfo,
+ 4, (const wxString&,
+ const wxString&,
+ const wxString&,
+ const wxString&),
+ (CtorString(f1),
+ CtorString(f2),
+ CtorString(f3),
+ CtorString(f4)));
+ WX_VARARG_WATCOM_WORKAROUND_CTOR(
+ wxFileTypeInfo,
+ 4, (const wxCStrData&,
+ const wxCStrData&,
+ const wxCStrData&,
+ const wxCStrData&),
+ (CtorString(f1),
+ CtorString(f2),
+ CtorString(f3),
+ CtorString(f4)));
+ WX_VARARG_WATCOM_WORKAROUND_CTOR(
+ wxFileTypeInfo,
+ 4, (const char*,
+ const char*,
+ const char*,
+ const char*),
+ (CtorString(f1),
+ CtorString(f2),
+ CtorString(f3),
+ CtorString(f4)));
+ WX_VARARG_WATCOM_WORKAROUND_CTOR(
+ wxFileTypeInfo,
+ 4, (const wchar_t*,
+ const wchar_t*,
+ const wchar_t*,
+ const wchar_t*),
+ (CtorString(f1),
+ CtorString(f2),
+ CtorString(f3),
+ CtorString(f4)));
+#endif
+
+ // the array elements correspond to the parameters of the ctor above in
+ // the same order
+ wxFileTypeInfo(const wxArrayString& sArray);
+
+ // 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.empty(); }
+
+ // setters
+ // set the open/print commands
+ void SetOpenCommand(const wxString& command) { m_openCmd = command; }
+ void SetPrintCommand(const wxString& command) { m_printCmd = command; }
+
+ // set the description
+ void SetDescription(const wxString& desc) { m_desc = desc; }
+
+ // add another extension corresponding to this file type
+ void AddExtension(const wxString& ext) { m_exts.push_back(ext); }
+
+ // 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; }
+ size_t GetExtensionsCount() const {return m_exts.GetCount(); }
+ // 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_USER_EXPORTED_OBJARRAY(wxFileTypeInfo, wxArrayFileTypeInfo,
+ WXDLLIMPEXP_BASE);
+
+// ----------------------------------------------------------------------------
+// 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 WXDLLEXPORT wxFileType
+// ----------------------------------------------------------------------------
+
+class WXDLLIMPEXP_BASE wxFileType
{
-friend class WXDLLEXPORT wxMimeTypesManagerImpl; // it has access to m_impl
+friend class WXDLLIMPEXP_FWD_BASE wxMimeTypesManagerImpl; // it has access to m_impl
public:
// An object of this class must be passed to Get{Open|Print}Command. The
public:
// ctors
MessageParameters() { }
- MessageParameters(const wxString& filename, const wxString& mimetype)
+ MessageParameters(const wxString& filename,
+ const wxString& mimetype = wxEmptyString)
: m_filename(filename), m_mimetype(mimetype) { }
// accessors (called by GetOpenCommand)
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 and of the given size
+ bool GetIcon(wxIconLocation *iconloc) const;
+ bool GetIcon(wxIconLocation *iconloc,
+ const MessageParameters& params) const;
// get a brief file type description ("*.txt" => "text document")
bool GetDescription(wxString *desc) const;
// get the command to execute the file of given type
bool GetOpenCommand(wxString *openCmd,
const MessageParameters& params) const;
+ // a simpler to use version of GetOpenCommand() -- it only takes the
+ // filename and returns an empty string on failure
+ wxString GetOpenCommand(const wxString& filename) const;
// get the command to print the file of given type
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;
+
+ // set an arbitrary command, ask confirmation if it already exists and
+ // overwriteprompt is true
+ bool SetCommand(const wxString& cmd, const wxString& verb,
+ bool overwriteprompt = true);
+
+ bool SetDefaultIcon(const wxString& cmd = wxEmptyString, int index = 0);
+
+
+ // 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
+ // '%s' and '%t' format specifiers for the file name and mime type
// and %{param} constructions).
static wxString ExpandCommand(const wxString& command,
const MessageParameters& params);
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;
};
-// This class is only used wuth wxMimeTypesManager::AddFallbacks() and is meant
-// just as the container for the wxFileType data.
-class WXDLLEXPORT wxFileTypeInfo
+//----------------------------------------------------------------------------
+// wxMimeTypesManagerFactory
+//----------------------------------------------------------------------------
+
+class WXDLLIMPEXP_BASE wxMimeTypesManagerFactory
{
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
- ...);
+ wxMimeTypesManagerFactory() {}
+ virtual ~wxMimeTypesManagerFactory() {}
- // invalid item - use this to terminate the array passed to
- // wxMimeTypesManager::AddFallbacks
- wxFileTypeInfo() { }
+ virtual wxMimeTypesManagerImpl *CreateMimeTypesManagerImpl();
- bool IsValid() const { return !m_mimeType.IsEmpty(); }
-
- // 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 description
- const wxString& GetDescription() const { return m_desc; }
- // get the array of all extensions
- const wxArrayString& GetExtensions() const { return m_exts; }
+ static void Set( wxMimeTypesManagerFactory *factory );
+ static wxMimeTypesManagerFactory *Get();
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_desc; // a free form description of this file type
-
- wxArrayString m_exts; // the extensions which are mapped on this filetype
+ static wxMimeTypesManagerFactory *m_factory;
};
+// ----------------------------------------------------------------------------
+// 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 WXDLLEXPORT wxMimeTypesManager
+// ----------------------------------------------------------------------------
+
+class WXDLLIMPEXP_BASE 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
+ // 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();
+ // NB: the following 2 functions are for Unix only and don't do anything
+ // elsewhere
+
+ // loads data from standard files according to the mailcap styles
+ // specified: this is a bitwise OR of wxMailcapStyle values
+ //
+ // use the extraDir parameter if you want to look for files in another
+ // directory
+ void Initialize(int mailcapStyle = wxMAILCAP_ALL,
+ const wxString& extraDir = wxEmptyString);
+
+ // and this function clears all the data from the manager
+ void ClearData();
+
// Database lookup: all functions return a pointer to wxFileType object
// whose methods may be used to query it for the information you're
// interested in. If the return value is !NULL, caller is responsible for
// get file type from MIME type (in format <category>/<format>)
wxFileType *GetFileTypeFromMimeType(const wxString& mimeType);
- // 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)
- //
- // '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
- 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).
+ // MIME types inside the program itself
//
- // It isn't possible (currently) to provide fallback icons using this
- // function.
- //
- // The filetypes array should be terminated by a NULL entry
+ // 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)
+ // if the other fields are empty, the existing values should be left alone
+ wxFileType *Associate(const wxFileTypeInfo& ftInfo);
+
+ // undo Associate()
+ bool Unassociate(wxFileType *ft) ;
// 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
- // wxUSE_FILE
-#endif
- //_MIMETYPE_H
+// ----------------------------------------------------------------------------
+// global variables
+// ----------------------------------------------------------------------------
+
+// the default mime manager for wxWidgets programs
+extern WXDLLIMPEXP_DATA_BASE(wxMimeTypesManager *) wxTheMimeTypesManager;
-/* vi: set cin tw=80 ts=4 sw=4: */
+#endif // wxUSE_MIMETYPE
+
+#endif
+ //_WX_MIMETYPE_H_
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