/* -*- Mode: C++; 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"

/**
 * nsIErrorService: This is an interim service that allows nsresult codes to be mapped to 
 * string bundles that can be used to look up error messages. String bundle keys can also
 * be mapped. 
 *
 * This service will eventually get replaced by extending xpidl to allow errors to be defined.
 * (http://bugzilla.mozilla.org/show_bug.cgi?id=13423).
 */
[scriptable, uuid(e72f94b2-5f85-11d4-9877-00c04fa0cf4a)]
interface nsIErrorService : nsISupports 
{
    /**
     * Registers a string bundle URL for an error module. Error modules are obtained from
     * nsresult code with NS_ERROR_GET_MODULE.
     */
    void registerErrorStringBundle(in short errorModule, in string stringBundleURL);

    /**
     * Unregisters a string bundle URL for an error module.
     */
    void unregisterErrorStringBundle(in short errorModule);

    /**
     * Retrieves a string bundle URL for an error module.
     */
    string getErrorStringBundle(in short errorModule);

    /**
     * Registers a key in a string bundle for an nsresult error code. Only the code portion
     * of the nsresult is used (obtained with NS_ERROR_GET_CODE) in this registration. The
     * string bundle key is used to look up internationalized messages in the string bundle.
     */
    void registerErrorStringBundleKey(in nsresult error, in string stringBundleKey);
    
    /**
     * Unregisters a key in a string bundle for an nsresult error code. 
     */
    void unregisterErrorStringBundleKey(in nsresult error);
    
    /**
     * Retrieves a key in a string bundle for an nsresult error code. If no key is registered
     * for the specified nsresult's code (obtained with NS_ERROR_GET_CODE), then the stringified
     * version of the nsresult code is returned.
     */
    string getErrorStringBundleKey(in nsresult error);
};

%{C++

// The global nsIErrorService:
#define NS_ERRORSERVICE_NAME   "Error Service" 
#define NS_ERRORSERVICE_CONTRACTID "@mozilla.org/xpcom/error-service;1"
#define NS_ERRORSERVICE_CID                          \
{ /* 744afd5e-5f8c-11d4-9877-00c04fa0cf4a */         \
    0x744afd5e,                                      \
    0x5f8c,                                          \
    0x11d4,                                          \
    {0x98, 0x77, 0x00, 0xc0, 0x4f, 0xa0, 0xcf, 0x4a} \
}

%}