MD Settings: Custom expand/collapse section animations.

third_party/closure_compiler/externs/web_animations.js

Index: third_party/closure_compiler/externs/web_animations.js
diff --git a/third_party/closure_compiler/externs/web_animations.js b/third_party/closure_compiler/externs/web_animations.js
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+// Copyright 2016 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+/**
+ * @fileoverview Minimal Closure externs for Web Animations.
+ * "Minimal" because the web-animations spec is in flux, Chromium's support is
+ * changing, and the intended consumer (MD Settings) is actually using the
+ * web-animations-js polyfill for the time being.
+ * @see https://w3c.github.io/web-animations/#programming-interface
+ */
+
+/**
+ * @enum {number}
+ * @see https://w3c.github.io/web-animations/#enumdef-fillmode
+ */
+var FillMode = {
+  'none': 0,
+  'forwards': 1,
+  'backwards': 2,
+  'both': 3,
+  'auto': 4
+};
+
+/**
+ * @enum {number}
+ * @see https://w3c.github.io/web-animations/#enumdef-playbackdirection
+ */
+var PlaybackDirection = {
+  'normal': 0,
+  'reverse': 1,
+  'alternate': 2,
+  'alternate-reverse': 3
+};
+
+/**
+ * @constructor
+ * @param {!Event} event
+ */
+var EventHandlerNonNull = function(event) {};
+
+/** @typedef {?EventHandlerNonNull} */
+var EventHandler;
+
+/**
+ * @constructor
+ * @see https://w3c.github.io/web-animations/#dictdef-keyframeanimationoptions
+ */
+var KeyframeAnimationOptions = function() {};
+
+/**
+ * @constructor
+ * @see https://w3c.github.io/web-animations/#dictdef-keyframeeffectoptions
+ */
+var KeyframeEffectOptions = function() {};
+
+/** @type {number} */
+KeyframeEffectOptions.prototype.delay;
+
+/** @type {number} */
+KeyframeEffectOptions.prototype.endDelay;
+
+/** @type {!FillMode} */
+KeyframeEffectOptions.prototype.fill;
+
+/** @type {number} */
+KeyframeEffectOptions.prototype.iterationStart;
+
+/** @type {number} */
+KeyframeEffectOptions.prototype.iterations;
+
+/** @type {number|string} */
+KeyframeEffectOptions.prototype.duration;
+
+/** @type {number} */
+KeyframeEffectOptions.prototype.playbackRate;
+
+/** @type {!PlaybackDirection} */
+KeyframeEffectOptions.prototype.direction;
+
+/** @type {string} */
+KeyframeEffectOptions.prototype.easing;
+
+/** @type {string} */
+KeyframeEffectOptions.prototype.id;
+
+/**
+ * @interface
+ * @extends {EventTarget}
+ * @see https://w3c.github.io/web-animations/#animation
+ */
+var Animation = function() {};
+
+/** @type {string} */
+Animation.prototype.id;
+
+/** @type {?number} */
+Animation.prototype.startTime;
+
+/** @type {?number} */
+Animation.prototype.currentTime;
+
+/** @type {number} */
+Animation.prototype.playbackRate;
+
+Animation.prototype.finish = function() {};
+
+Animation.prototype.play = function() {};
+
+Animation.prototype.pause = function() {};
+
+Animation.prototype.reverse = function() {};
+
+Animation.prototype.cancel = function() {};
+
+/**
+ * @param {boolean=} opt_useCapture
+ * @override
+ */
+Animation.prototype.addEventListener = function(
+    type, listener, opt_useCapture) {};
+
+/** @type {EventHandler} */
+Animation.prototype.onfinish;
+
+/** @type {EventHandler} */
+Animation.prototype.oncancel;
+
+/**
+ * @interface
+ * @see https://w3c.github.io/web-animations/#animatable
+ */
+var Animatable = function() {};
+
+Animatable.prototype = /** @lends {Element.prototype} */({
+  /**
+   * @param {?Array<Object>|Object} effect
+   * @param {number|!KeyframeEffectOptions=} opt_timing
+   * @return {!Animation}
+   */
+  animate: function(effect, opt_timing) {},
+});