From 791d5f8a43a28b149e0c328c71ecc31c2ade2179 Mon Sep 17 00:00:00 2001
From: Moonchild <moonchild@palemoon.org>
Date: Wed, 16 Sep 2020 16:39:15 +0000
Subject: Issue #1643 - Part 2: Implement ResizeObserver API

Implements ResizeObserver, ResizeObserverEntry and ResizeObservation
---
 dom/webidl/ResizeObserver.webidl | 39 +++++++++++++++++++++++++++++++++++++++
 dom/webidl/moz.build             |  1 +
 2 files changed, 40 insertions(+)
 create mode 100644 dom/webidl/ResizeObserver.webidl

(limited to 'dom/webidl')

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',
-- 
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