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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 "nsIPrefBranch.idl"
%{C++
struct PrefTuple;
#include "nsTArrayForwardDeclare.h"
%}
[ptr] native nsPreferencesArrayPtr(nsTArray<PrefTuple>);
[ptr] native nsPreferencePtr(PrefTuple);
[ptr] native nsPreferencePtrConst(const PrefTuple);
interface nsIFile;
/**
* The nsIPrefService interface is the main entry point into the back end
* preferences management library. The preference service is directly
* responsible for the management of the preferences files and also facilitates
* access to the preference branch object which allows the direct manipulation
* of the preferences themselves.
*
* @see nsIPrefBranch
*/
[scriptable, uuid(1f84fd56-3956-40df-b86a-1ea01402ee96)]
interface nsIPrefService : nsISupports
{
/**
* Called to read in the preferences specified in a user preference file.
*
* @param aFile The file to be read.
*
* @note
* If nullptr is passed in for the aFile parameter the default preferences
* file(s) [prefs.js, user.js] will be read and processed.
*
* @throws Error File failed to read or contained invalid data.
*
* @see savePrefFile
* @see nsIFile
*/
void readUserPrefs(in nsIFile aFile);
/**
* Called to completely flush and re-initialize the preferences system.
*
* @throws Error The preference service failed to restart correctly.
*/
void resetPrefs();
/**
* Called to reset all preferences with user set values back to the
* application default values.
*/
void resetUserPrefs();
/**
* Called to write current preferences state to a file.
*
* @param aFile The file to be written.
*
* @note
* If nullptr is passed in for the aFile parameter the preference data is
* written out to the current preferences file (usually prefs.js.)
*
* @throws Error File failed to write.
*
* @see readUserPrefs
* @see nsIFile
*/
void savePrefFile(in nsIFile aFile);
/**
* Call to get a Preferences "Branch" which accesses user preference data.
* Using a Set method on this object will always create or set a user
* preference value. When using a Get method a user set value will be
* returned if one exists, otherwise a default value will be returned.
*
* @param aPrefRoot The preference "root" on which to base this "branch".
* For example, if the root "browser.startup." is used, the
* branch will be able to easily access the preferences
* "browser.startup.page", "browser.startup.homepage", or
* "browser.startup.homepage_override" by simply requesting
* "page", "homepage", or "homepage_override". nullptr or ""
* may be used to access to the entire preference "tree".
*
* @return nsIPrefBranch The object representing the requested branch.
*
* @see getDefaultBranch
*/
nsIPrefBranch getBranch(in string aPrefRoot);
/**
* Call to get a Preferences "Branch" which accesses only the default
* preference data. Using a Set method on this object will always create or
* set a default preference value. When using a Get method a default value
* will always be returned.
*
* @param aPrefRoot The preference "root" on which to base this "branch".
* For example, if the root "browser.startup." is used, the
* branch will be able to easily access the preferences
* "browser.startup.page", "browser.startup.homepage", or
* "browser.startup.homepage_override" by simply requesting
* "page", "homepage", or "homepage_override". nullptr or ""
* may be used to access to the entire preference "tree".
*
* @note
* Few consumers will want to create default branch objects. Many of the
* branch methods do nothing on a default branch because the operations only
* make sense when applied to user set preferences.
*
* @return nsIPrefBranch The object representing the requested default branch.
*
* @see getBranch
*/
nsIPrefBranch getDefaultBranch(in string aPrefRoot);
/**
* The preference service is 'dirty' if there are changes to user preferences
* that have not been written to disk
*/
readonly attribute boolean dirty;
};
%{C++
#define NS_PREFSERVICE_CID \
{ /* {1cd91b88-1dd2-11b2-92e1-ed22ed298000} */ \
0x91ca2441, \
0x050f, \
0x4f7c, \
{ 0x9d, 0xf8, 0x75, 0xb4, 0x0e, 0xa4, 0x01, 0x56 } \
}
#define NS_PREFSERVICE_CONTRACTID "@mozilla.org/preferences-service;1"
/**
* Notification sent before reading the default user preferences files.
*/
#define NS_PREFSERVICE_READ_TOPIC_ID "prefservice:before-read-userprefs"
/**
* Notification sent when resetPrefs has been called, but before the actual
* reset process occurs.
*/
#define NS_PREFSERVICE_RESET_TOPIC_ID "prefservice:before-reset"
/**
* Notification sent when after reading app-provided default
* preferences, but before user profile override defaults or extension
* defaults are loaded.
*/
#define NS_PREFSERVICE_APPDEFAULTS_TOPIC_ID "prefservice:after-app-defaults"
%}
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