Source code

Revision control

Other Tools

/* -*- Mode: IDL; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "nsISupports.idl"
interface nsIFile;
interface nsIMIMEInfo;
interface nsIURI;
%{C++
#define NS_MIMESERVICE_CID \
{ /* 03af31da-3109-11d3-8cd0-0060b0fc14a3 */ \
0x03af31da, \
0x3109, \
0x11d3, \
{0x8c, 0xd0, 0x00, 0x60, 0xb0, 0xfc, 0x14, 0xa3} \
}
%}
/**
* The MIME service is responsible for mapping file extensions to MIME-types
* (see RFC 2045). It also provides access to nsIMIMEInfo interfaces and
* acts as a general convenience wrapper of nsIMIMEInfo interfaces.
*
* The MIME service maintains a database with a <b>one</b> MIME type <b>to many</b>
* file extensions rule. Adding the same file extension to multiple MIME types
* is illegal and behavior is undefined.
*
* @see nsIMIMEInfo
*/
[scriptable, main_process_scriptable_only, uuid(5b3675a1-02db-4f8f-a560-b34736635f47)]
interface nsIMIMEService : nsISupports {
/**
* Retrieves an nsIMIMEInfo using both the extension
* and the type of a file. The type is given preference
* during the lookup. One of aMIMEType and aFileExt
* can be an empty string. At least one of aMIMEType and aFileExt
* must be nonempty.
*/
nsIMIMEInfo getFromTypeAndExtension(in ACString aMIMEType, in AUTF8String aFileExt);
/**
* Retrieves a ACString representation of the MIME type
* associated with this file extension.
*
* @param A file extension (excluding the dot ('.')).
* @return The MIME type, if any.
*/
ACString getTypeFromExtension(in AUTF8String aFileExt);
/**
* Retrieves a ACString representation of the MIME type
* associated with this URI. The association is purely
* file extension to MIME type based. No attempt to determine
* the type via server headers or byte scanning is made.
*
* @param The URI the user wants MIME info on.
* @return The MIME type, if any.
*/
ACString getTypeFromURI(in nsIURI aURI);
//
ACString getTypeFromFile(in nsIFile aFile);
/**
* Given a Type/Extension combination, returns the default extension
* for this type. This may be identical to the passed-in extension.
*
* @param aMIMEType The Type to get information on. Must not be empty.
* @param aFileExt File Extension. Can be empty.
*/
AUTF8String getPrimaryExtension(in ACString aMIMEType, in AUTF8String aFileExt);
/*
* Returns an nsIMIMEInfo for the provided MIME type and extension
* obtained from an OS lookup. If no handler is found for the type and
* extension, returns a generic nsIMIMEInfo object. The MIME type and
* extension can be the empty string. When the type and extension don't
* map to the same handler, the semantics/resolution are platform
* specific. See the platform implementations for details.
*
* @param aType The MIME type to get handler information for.
* @param aFileExtension The filename extension to use either alone
* or with the MIME type to get handler information
* for. UTF-8 encoded.
* @param [out] aFound Out param indicating whether a MIMEInfo could
* be found for the provided type and/or extension.
* Set to false when neither extension nor the MIME
* type are mapped to a handler.
* @return A nsIMIMEInfo object. This function must return
* a MIMEInfo object if it can allocate one. The
* only justifiable reason for not returning one is
* an out-of-memory error.
*/
nsIMIMEInfo getMIMEInfoFromOS(in ACString aType,
in ACString aFileExtension,
out boolean aFound);
};