1 files changed, 60 insertions, 0 deletions
diff --git a/xpcom/ds/nsIPersistentProperties2.idl b/xpcom/ds/nsIPersistentProperties2.idl
new file mode 100644
index 0000000000..d0158d6e5b
--- /dev/null
+++ b/xpcom/ds/nsIPersistentProperties2.idl
@@ -0,0 +1,60 @@
+/* -*- Mode: C++; 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 "nsIProperties.idl"
+
+interface nsIInputStream;
+interface nsIOutputStream;
+interface nsISimpleEnumerator;
+
+%{C++
+#include "mozilla/MemoryReporting.h"
+%}
+
+[scriptable, uuid(283EE646-1AEF-11D4-98B3-00C04fA0CE9A)]
+interface nsIPropertyElement : nsISupports {
+  attribute AUTF8String key;
+  attribute AString value;
+};
+
+[scriptable, uuid(706867af-0400-4faa-beb1-0dae87308784)]
+interface nsIPersistentProperties : nsIProperties
+{
+  /**
+   * load a set of name/value pairs from the input stream
+   * names and values should be in UTF8
+   */
+  void load(in nsIInputStream input);
+
+  /**
+   * output the values to the stream - results will be in UTF8
+   */
+  void save(in nsIOutputStream output, in AUTF8String header);
+
+  /**
+   * get an enumeration of nsIPropertyElement objects,
+   * which are read-only (i.e. setting properties on the element will
+   * not make changes back into the source nsIPersistentProperties
+   */
+  nsISimpleEnumerator enumerate();
+
+  /**
+   * shortcut to nsIProperty's get() which retrieves a string value
+   * directly (and thus faster)
+   */
+  AString getStringProperty(in AUTF8String key);
+
+  /**
+   * shortcut to nsIProperty's set() which sets a string value
+   * directly (and thus faster). If the given property already exists,
+   * then the old value will be returned
+   */
+  AString setStringProperty(in AUTF8String key, in AString value);
+
+%{C++
+  virtual size_t SizeOfIncludingThis(mozilla::MallocSizeOf aMallocSizeOf) const = 0;
+%}
+};
+