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/* -*- Mode: IDL; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* 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"
#include "nsISupportsPrimitives.idl"
/**
* Represents a C++ map of pref names to values that is constructable from JS.
* The entries in this map must be known prefs and the type of the jsval
* values must match the known type of the pref. We currently use this to
* overlay alternative values atop the current pref values during
* backupPrefFile, for prefs that we don't want to back up, or that we do want
* to back up, but with values different than the current ones.
*/
[scriptable, builtinclass, uuid(56ba17e3-4bfd-4804-bdf7-9c6e70170279)]
interface nsIPrefOverrideMap : nsISupports
{
/**
* Add value to the map.
* @param aPrefName Must be a known pref.
* @param aPrefValue Type must be a boolean, an integer, or a string and must
* match the known type of the pref. Regardless of type,
* this can always be null.
* @throws If aPrefName is not a valid pref name, if aPrefValue is not of the
* right type for the pref, or on OOM
*/
[implicit_jscontext]
void addEntry(in ACString aPrefName, in jsval aPrefValue);
/**
* Retrieve a value from the map.
* @param aPrefName Must be a known pref.
* @returns A boolean, an integer, or a string.
* @throws If aPrefName is not in the map or on OOM.
*/
[implicit_jscontext]
jsval getEntry(in ACString aPrefName);
};
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