/* -*- Mode: IDL; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ /* ***** BEGIN LICENSE BLOCK ***** * Version: MPL 1.1/GPL 2.0/LGPL 2.1 * * The contents of this file are subject to the Mozilla Public License Version * 1.1 (the "License"); you may not use this file except in compliance with * the License. You may obtain a copy of the License at * http://www.mozilla.org/MPL/ * * Software distributed under the License is distributed on an "AS IS" basis, * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License * for the specific language governing rights and limitations under the * License. * * The Original Code is Mozilla Communicator client code. * * The Initial Developer of the Original Code is * Netscape Communications Corporation. * Portions created by the Initial Developer are Copyright (C) 1998 * the Initial Developer. All Rights Reserved. * * Contributor(s): * Alec Flett * Brian Nesse * * Alternatively, the contents of this file may be used under the terms of * either the GNU General Public License Version 2 or later (the "GPL"), or * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"), * in which case the provisions of the GPL or the LGPL are applicable instead * of those above. If you wish to allow use of your version of this file only * under the terms of either the GPL or the LGPL, and not to allow others to * use your version of this file under the terms of the MPL, indicate your * decision by deleting the provisions above and replace them with the notice * and other provisions required by the GPL or the LGPL. If you do not delete * the provisions above, a recipient may use your version of this file under * the terms of any one of the MPL, the GPL or the LGPL. * * ***** END LICENSE BLOCK ***** */ #include "nsISupports.idl" /** * The nsIPrefBranch interface is used to manipulate the preferences data. This * object may be obtained from the preferences service (nsIPrefService) and * used to get and set default and/or user preferences across the application. * * This object is created with a "root" value which describes the base point in * the preferences "tree" from which this "branch" stems. Preferences are * accessed off of this root by using just the final portion of the preference. * For example, if this object is created with the root "browser.startup.", * the preferences "browser.startup.page", "browser.startup.homepage", * and "browser.startup.homepage_override" can be accessed by simply passing * "page", "homepage", or "homepage_override" to the various Get/Set methods. * * @see nsIPrefService */ [scriptable, uuid(56c35506-f14b-11d3-99d3-ddbfac2ccf65)] interface nsIPrefBranch : nsISupports { /** * Values describing the basic preference types. * * @see getPrefType */ const long PREF_INVALID = 0; const long PREF_STRING = 32; const long PREF_INT = 64; const long PREF_BOOL = 128; /** * Called to get the root on which this branch is based, such as * "browser.startup." */ readonly attribute string root; /** * Called to determine the type of a specific preference. * * @param aPrefName The preference to get the type of. * * @return long A value representing the type of the preference. This * value will be PREF_STRING, PREF_INT, or PREF_BOOL. */ long getPrefType(in string aPrefName); /** * Called to get the state of an individual boolean preference. * * @param aPrefName The boolean preference to get the state of. * * @return boolean The value of the requested boolean preference. * * @see setBoolPref */ boolean getBoolPref(in string aPrefName); /** * Called to set the state of an individual boolean preference. * * @param aPrefName The boolean preference to set the state of. * @param aValue The boolean value to set the preference to. * * @return NS_OK The value was successfully set. * @return Other The value was not set or is the wrong type. * * @see getBoolPref */ void setBoolPref(in string aPrefName, in long aValue); /** * Called to get the state of an individual string preference. * * @param aPrefName The string preference to retrieve. * * @return string The value of the requested string preference. * * @see setCharPref */ string getCharPref(in string aPrefName); /** * Called to set the state of an individual string preference. * * @param aPrefName The string preference to set. * @param aValue The string value to set the preference to. * * @return NS_OK The value was successfully set. * @return Other The value was not set or is the wrong type. * * @see getCharPref */ void setCharPref(in string aPrefName, in string aValue); /** * Called to get the state of an individual integer preference. * * @param aPrefName The integer preference to get the value of. * * @return long The value of the requested integer preference. * * @see setIntPref */ long getIntPref(in string aPrefName); /** * Called to set the state of an individual integer preference. * * @param aPrefName The integer preference to set the value of. * @param aValue The integer value to set the preference to. * * @return NS_OK The value was successfully set. * @return Other The value was not set or is the wrong type. * * @see getIntPref */ void setIntPref(in string aPrefName, in long aValue); /** * Called to get the state of an individual complex preference. A complex * preference is a preference which represents an XPCOM object that can not * be easily represented using a standard boolean, integer or string value. * * @param aPrefName The complex preference to get the value of. * @param aType The XPCOM interface that this complex preference * represents. Interfaces currently supported are: * - nsILocalFile * - nsISupportsString (UniChar) * - nsIPrefLocalizedString (Localized UniChar) * @param aValue The XPCOM object into which to the complex preference * value should be retrieved. * * @return NS_OK The value was successfully retrieved. * @return Other The value does not exist or is the wrong type. * * @see setComplexValue */ void getComplexValue(in string aPrefName, in nsIIDRef aType, [iid_is(aType), retval] out nsQIResult aValue); /** * Called to set the state of an individual complex preference. A complex * preference is a preference which represents an XPCOM object that can not * be easily represented using a standard boolean, integer or string value. * * @param aPrefName The complex preference to set the value of. * @param aType The XPCOM interface that this complex preference * represents. Interfaces currently supported are: * - nsILocalFile * - nsISupportsString (UniChar) * - nsIPrefLocalizedString (Localized UniChar) * @param aValue The XPCOM object from which to set the complex preference * value. * * @return NS_OK The value was successfully set. * @return Other The value was not set or is the wrong type. * * @see getComplexValue */ void setComplexValue(in string aPrefName, in nsIIDRef aType, in nsISupports aValue); /** * Called to clear a user set value from a specific preference. This will, in * effect, reset the value to the default value. If no default value exists * the preference will cease to exist. * * @param aPrefName The preference to be cleared. * * @note * This method does nothing if this object is a default branch. * * @return NS_OK The user preference was successfully cleared. * @return Other The preference does not exist or have a user set value. */ void clearUserPref(in string aPrefName); /** * Called to lock a specific preference. Locking a preference will cause the * preference service to always return the default value regardless of * whether there is a user set value or not. * * @param aPrefName The preference to be locked. * * @note * This method can be called on either a default or user branch but, in * effect, always operates on the default branch. * * @return NS_OK The preference was successfully locked. * @return Other The preference does not exist or an error occurred. * * @see unlockPref */ void lockPref(in string aPrefName); /** * Called to check if a specific preference has a user value associated to * it. * * @param aPrefName The preference to be tested. * * @note * This method can be called on either a default or user branch but, in * effect, always operates on the user branch. * * @note * If a preference was manually set to a value that equals the default value, * then the preference no longer has a user set value, i.e. it is * considered reset to its default value. * In particular, this method will return false for such a preference and * the preference will not be saved to a file by nsIPrefService.savePrefFile. * * @return boolean true The preference has a user set value. * false The preference only has a default value. */ boolean prefHasUserValue(in string aPrefName); /** * Called to check if a specific preference is locked. If a preference is * locked calling its Get method will always return the default value. * * @param aPrefName The preference to be tested. * * @note * This method can be called on either a default or user branch but, in * effect, always operates on the default branch. * * @return boolean true The preference is locked. * false The preference is not locked. * * @see lockPref * @see unlockPref */ boolean prefIsLocked(in string aPrefName); /** * Called to unlock a specific preference. Unlocking a previously locked * preference allows the preference service to once again return the user set * value of the preference. * * @param aPrefName The preference to be unlocked. * * @note * This method can be called on either a default or user branch but, in * effect, always operates on the default branch. * * @return NS_OK The preference was successfully unlocked. * @return Other The preference does not exist or an error occurred. * * @see lockPref */ void unlockPref(in string aPrefName); /** * Called to remove all of the preferences referenced by this branch. * * @param aStartingAt The point on the branch at which to start the deleting * preferences. Pass in "" to remove all preferences * referenced by this branch. * * @note * This method can be called on either a default or user branch but, in * effect, always operates on both. * * @return NS_OK The preference(s) were successfully removed. * @return Other The preference(s) do not exist or an error occurred. */ void deleteBranch(in string aStartingAt); /** * Returns an array of strings representing the child preferences of the * root of this branch. * * @param aStartingAt The point on the branch at which to start enumerating * the child preferences. Pass in "" to enumerate all * preferences referenced by this branch. * @param aCount Receives the number of elements in the array. * @param aChildArray Receives the array of child preferences. * * @note * This method can be called on either a default or user branch but, in * effect, always operates on both. * * @return NS_OK The preference list was successfully retrieved. * @return Other The preference(s) do not exist or an error occurred. */ void getChildList(in string aStartingAt, [optional] out unsigned long aCount, [array, size_is(aCount), retval] out string aChildArray); /** * Called to reset all of the preferences referenced by this branch to their * default values. * * @param aStartingAt The point on the branch at which to start the resetting * preferences to their default values. Pass in "" to * reset all preferences referenced by this branch. * * @note * This method can be called on either a default or user branch but, in * effect, always operates on the user branch. * * @return NS_OK The preference(s) were successfully reset. * @return Other The preference(s) do not exist or an error occurred. */ void resetBranch(in string aStartingAt); }; %{C++ #define NS_PREFBRANCH_CONTRACTID "@mozilla.org/preferencesbranch;1" #define NS_PREFBRANCH_CLASSNAME "Preferences Branch" %}