1 files changed, 68 insertions, 0 deletions
diff --git a/dom/interfaces/base/nsIStructuredCloneContainer.idl b/dom/interfaces/base/nsIStructuredCloneContainer.idl
new file mode 100644
index 0000000000..981ea75b0a
--- /dev/null
+++ b/dom/interfaces/base/nsIStructuredCloneContainer.idl
@@ -0,0 +1,68 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+ * vim: set ts=8 sw=2 et tw=80:
+ *
+ * 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"
+
+interface nsIVariant;
+
+%{C++
+#include "js/TypeDecls.h"
+%}
+
+/**
+ * This interface acts as a container for an object serialized using the
+ * structured clone algorithm.
+ *
+ * You can copy an object into an nsIStructuredCloneContainer using
+ * initFromJSVal or initFromBase64.  It's an error to initialize an
+ * nsIStructuredCloneContainer more than once.
+ *
+ * Once you've initialized the container, you can get a copy of the object it
+ * stores by calling deserializeToVariant.  You can also get a base-64-encoded
+ * string containing a copy of the container's serialized data, using
+ * getDataAsBase64.
+ */
+[scriptable, uuid(c664aae7-0d67-4155-a2dd-a3861778626f)]
+interface nsIStructuredCloneContainer : nsISupports
+{
+  /**
+   * Initialize this structured clone container so it contains a clone of the
+   * given jsval.
+   */
+  [noscript, implicit_jscontext]
+  void initFromJSVal(in jsval aData);
+
+  /**
+   * Initialize this structured clone container from a base-64-encoded byte
+   * stream, stored in aData.  aFormatVersion should be the version of the
+   * structured clone algorithm which was used to generate aData.
+   */
+  void initFromBase64(in AString aData, in unsigned long aFormatVersion);
+
+  /**
+   * Deserializes this structured clone container returning it as a jsval.
+   * Can be called on main and worker threads.
+   */
+  [implicit_jscontext]
+  jsval deserializeToJsval();
+
+  /**
+   * Get this structured clone container's data as a base-64-encoded string.
+   */
+  AString getDataAsBase64();
+
+  /**
+   * Get the size in bytes of this container's serialized data.
+   */
+  readonly attribute unsigned long long serializedNBytes;
+
+  /**
+   * Get the version of the structured clone algorithm which was used to
+   * generate this container's serialized buffer.
+   */
+  readonly attribute unsigned long formatVersion;
+};