1 files changed, 160 insertions, 0 deletions
diff --git a/modules/libpref/nsIPrefService.idl b/modules/libpref/nsIPrefService.idl
new file mode 100644
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+++ b/modules/libpref/nsIPrefService.idl
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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"
+
+%}