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-rw-r--r--dom/webidl/ResizeObserver.webidl39
-rw-r--r--dom/webidl/moz.build1
2 files changed, 40 insertions, 0 deletions
diff --git a/dom/webidl/ResizeObserver.webidl b/dom/webidl/ResizeObserver.webidl
new file mode 100644
index 000000000..98700f53c
--- /dev/null
+++ b/dom/webidl/ResizeObserver.webidl
@@ -0,0 +1,39 @@
+/* -*- 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/.
+ *
+ * The origin of this IDL file is
+ * https://wicg.github.io/ResizeObserver/
+ */
+
+[Constructor(ResizeObserverCallback callback),
+ Exposed=Window,
+ Pref="layout.css.resizeobserver.enabled"]
+interface ResizeObserver {
+ [Throws]
+ void observe(Element? target);
+ [Throws]
+ void unobserve(Element? target);
+ void disconnect();
+};
+
+callback ResizeObserverCallback = void (sequence<ResizeObserverEntry> entries, ResizeObserver observer);
+
+[Constructor(Element? target),
+ ChromeOnly,
+ Pref="layout.css.resizeobserver.enabled"]
+interface ResizeObserverEntry {
+ readonly attribute Element target;
+ readonly attribute DOMRectReadOnly? contentRect;
+};
+
+[Constructor(Element? target),
+ ChromeOnly,
+ Pref="layout.css.resizeobserver.enabled"]
+interface ResizeObservation {
+ readonly attribute Element target;
+ readonly attribute long broadcastWidth;
+ readonly attribute long broadcastHeight;
+ boolean isActive();
+};
diff --git a/dom/webidl/moz.build b/dom/webidl/moz.build
index 687e502fa..5699e7721 100644
--- a/dom/webidl/moz.build
+++ b/dom/webidl/moz.build
@@ -365,6 +365,7 @@ WEBIDL_FILES = [
'Range.webidl',
'Rect.webidl',
'Request.webidl',
+ 'ResizeObserver.webidl',
'Response.webidl',
'RGBColor.webidl',
'RTCStatsReport.webidl',