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authorMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
committerMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
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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: */
+/* 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"
+
+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;
+ const unsigned long WOW64_32 = 0x00000200;
+ const unsigned long WOW64_64 = 0x00000100;
+
+
+ /**
+ * 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();
+};