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