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pjs/xpcom/ds/nsIWindowsRegKey.idl

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim:set ts=2 sw=2 sts=2 et cindent: */
/* ***** 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.org code.
*
* The Initial Developer of the Original Code is Google Inc.
* Portions created by the Initial Developer are Copyright (C) 2005
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Darin Fisher <darin@meer.net>
*
* 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"
native HKEY(HKEY);
/**
* This interface is designed to provide scriptable access to the Windows
* registry system ("With Great Power Comes Great Responsibility"). The
* interface represents a single key in the registry.
*
* This interface is highly Win32 specific.
*/
[scriptable, uuid(2555b930-d64f-437e-9be7-0a2cb252c1f4)]
interface nsIWindowsRegKey : nsISupports
{
/**
* Root keys. The values for these keys correspond to the values from
* WinReg.h in the MS Platform SDK. The ROOT_KEY_ prefix corresponds to the
* HKEY_ prefix in the MS Platform SDK.
*
* This interface is not restricted to using only these root keys.
*/
const unsigned long ROOT_KEY_CLASSES_ROOT = 0x80000000;
const unsigned long ROOT_KEY_CURRENT_USER = 0x80000001;
const unsigned long ROOT_KEY_LOCAL_MACHINE = 0x80000002;
/**
* Values for the mode parameter passed to the open and create methods.
* The values defined here correspond to the REGSAM values defined in
* WinNT.h in the MS Platform SDK, where ACCESS_ is replaced with KEY_.
*
* This interface is not restricted to using only these access types.
*/
const unsigned long ACCESS_BASIC = 0x00020000;
const unsigned long ACCESS_QUERY_VALUE = 0x00000001;
const unsigned long ACCESS_SET_VALUE = 0x00000002;
const unsigned long ACCESS_CREATE_SUB_KEY = 0x00000004;
const unsigned long ACCESS_ENUMERATE_SUB_KEYS = 0x00000008;
const unsigned long ACCESS_NOTIFY = 0x00000010;
const unsigned long ACCESS_READ = ACCESS_BASIC |
ACCESS_QUERY_VALUE |
ACCESS_ENUMERATE_SUB_KEYS |
ACCESS_NOTIFY;
const unsigned long ACCESS_WRITE = ACCESS_BASIC |
ACCESS_SET_VALUE |
ACCESS_CREATE_SUB_KEY;
const unsigned long ACCESS_ALL = ACCESS_READ |
ACCESS_WRITE;
/**
* Values for the type of a registry value. The numeric values of these
* constants are taken directly from WinNT.h in the MS Platform SDK.
* The Microsoft documentation should be consulted for the exact meaning of
* these value types.
*
* This interface is somewhat restricted to using only these value types.
* There is no method that is directly equivalent to RegQueryValueEx or
* RegSetValueEx. In particular, this interface does not support the
* REG_MULTI_SZ and REG_EXPAND_SZ value types. It is still possible to
* enumerate values that have other types (i.e., getValueType may return a
* type not defined below).
*/
const unsigned long TYPE_NONE = 0; // REG_NONE
const unsigned long TYPE_STRING = 1; // REG_SZ
const unsigned long TYPE_BINARY = 3; // REG_BINARY
const unsigned long TYPE_INT = 4; // REG_DWORD
const unsigned long TYPE_INT64 = 11; // REG_QWORD
/**
* This attribute exposes the native HKEY and is available to provide C++
* consumers with the flexibility of making other Windows registry API calls
* that are not exposed via this interface.
*
* It is possible to initialize this object by setting an HKEY on it. In
* that case, it is the responsibility of the consumer setting the HKEY to
* ensure that it is a valid HKEY.
*
* WARNING: Setting the key does not close the old key.
*/
[noscript] attribute HKEY key;
/**
* This method closes the key. If the key is already closed, then this
* method does nothing.
*/
void close();
/**
* This method opens an existing key. This method fails if the key
* does not exist.
*
* NOTE: On 32-bit Windows, it is valid to pass any HKEY as the rootKey
* parameter of this function. However, for compatibility with 64-bit
* Windows, that usage should probably be avoided in favor of openChild.
*
* @param rootKey
* A root key defined above or any valid HKEY on 32-bit Windows.
* @param relPath
* A relative path from the given root key.
* @param mode
* Access mode, which is a bit-wise OR of the ACCESS_ values defined
* above.
*/
void open(in unsigned long rootKey, in AString relPath, in unsigned long mode);
/**
* This method opens an existing key or creates a new key.
*
* NOTE: On 32-bit Windows, it is valid to pass any HKEY as the rootKey
* parameter of this function. However, for compatibility with 64-bit
* Windows, that usage should probably be avoided in favor of createChild.
*
* @param rootKey
* A root key defined above or any valid HKEY on 32-bit Windows.
* @param relPath
* A relative path from the given root key.
* @param mode
* Access mode, which is a bit-wise OR of the ACCESS_ values defined
* above.
*/
void create(in unsigned long rootKey, in AString relPath, in unsigned long mode);
/**
* This method opens a subkey relative to this key. This method fails if the
* key does not exist.
*
* @return nsIWindowsRegKey for the newly opened subkey.
*/
nsIWindowsRegKey openChild(in AString relPath, in unsigned long mode);
/**
* This method opens or creates a subkey relative to this key.
*
* @return nsIWindowsRegKey for the newly opened or created subkey.
*/
nsIWindowsRegKey createChild(in AString relPath, in unsigned long mode);
/**
* This attribute returns the number of child keys.
*/
readonly attribute unsigned long childCount;
/**
* This method returns the name of the n'th child key.
*
* @param index
* The index of the requested child key.
*/
AString getChildName(in unsigned long index);
/**
* This method checks to see if the key has a child by the given name.
*
* @param name
* The name of the requested child key.
*/
boolean hasChild(in AString name);
/**
* This attribute returns the number of values under this key.
*/
readonly attribute unsigned long valueCount;
/**
* This method returns the name of the n'th value under this key.
*
* @param index
* The index of the requested value.
*/
AString getValueName(in unsigned long index);
/**
* This method checks to see if the key has a value by the given name.
*
* @param name
* The name of the requested value.
*/
boolean hasValue(in AString name);
/**
* This method removes a child key and all of its values. This method will
* fail if the key has any children of its own.
*
* @param relPath
* The relative path from this key to the key to be removed.
*/
void removeChild(in AString relPath);
/**
* This method removes the value with the given name.
*
* @param name
* The name of the value to be removed.
*/
void removeValue(in AString name);
/**
* This method returns the type of the value with the given name. The return
* value is one of the "TYPE_" constants defined above.
*
* @param name
* The name of the value to query.
*/
unsigned long getValueType(in AString name);
/**
* This method reads the string contents of the named value as a Unicode
* string.
*
* @param name
* The name of the value to query. This parameter can be the empty
* string to request the key's default value.
*/
AString readStringValue(in AString name);
/**
* This method reads the integer contents of the named value.
*
* @param name
* The name of the value to query.
*/
unsigned long readIntValue(in AString name);
/**
* This method reads the 64-bit integer contents of the named value.
*
* @param name
* The name of the value to query.
*/
unsigned long long readInt64Value(in AString name);
/**
* This method reads the binary contents of the named value under this key.
*
* JavaScript callers should take care with the result of this method since
* it will be byte-expanded to form a JS string. (The binary data will be
* treated as an ISO-Latin-1 character string, which it is not).
*
* @param name
* The name of the value to query.
*/
ACString readBinaryValue(in AString name);
/**
* This method writes the unicode string contents of the named value. The
* value will be created if it does not already exist.
*
* @param name
* The name of the value to modify. This parameter can be the empty
* string to modify the key's default value.
* @param data
* The data for the value to modify.
*/
void writeStringValue(in AString name, in AString data);
/**
* This method writes the integer contents of the named value. The value
* will be created if it does not already exist.
*
* @param name
* The name of the value to modify.
* @param data
* The data for the value to modify.
*/
void writeIntValue(in AString name, in unsigned long data);
/**
* This method writes the 64-bit integer contents of the named value. The
* value will be created if it does not already exist.
*
* @param name
* The name of the value to modify.
* @param data
* The data for the value to modify.
*/
void writeInt64Value(in AString name, in unsigned long long data);
/**
* This method writes the binary contents of the named value. The value will
* be created if it does not already exist.
*
* JavaScript callers should take care with the value passed to this method
* since it will be truncated from a JS string (unicode) to a ISO-Latin-1
* string. (The binary data will be treated as an ISO-Latin-1 character
* string, which it is not). So, JavaScript callers should only pass
* character values in the range \u0000 to \u00FF, or else data loss will
* occur.
*
* @param name
* The name of the value to modify.
* @param data
* The data for the value to modify.
*/
void writeBinaryValue(in AString name, in ACString data);
/**
* This method starts watching the key to see if any of its values have
* changed. The key must have been opened with mode including ACCESS_NOTIFY.
* If recurse is true, then this key and any of its descendant keys are
* watched. Otherwise, only this key is watched.
*
* @param recurse
* Indicates whether or not to also watch child keys.
*/
void startWatching(in boolean recurse);
/**
* This method stops any watching of the key initiated by a call to
* startWatching. This method does nothing if the key is not being watched.
*/
void stopWatching();
/**
* This method returns true if the key is being watched for changes (i.e.,
* if startWatching() was called).
*/
boolean isWatching();
/**
* This method returns true if the key has changed and false otherwise.
* This method will always return false if startWatching was not called.
*/
boolean hasChanged();
};
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