зеркало из https://github.com/mozilla/gecko-dev.git
433 строки
14 KiB
JavaScript
433 строки
14 KiB
JavaScript
/* Any copyright is dedicated to the Public Domain.
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* http://creativecommons.org/publicdomain/zero/1.0/ */
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/**
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* Use this variable if you specify duration or some other properties
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* for script animation.
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* E.g., div.animate({ opacity: [0, 1] }, 100 * MS_PER_SEC);
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*
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* NOTE: Creating animations with short duration may cause intermittent
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* failures in asynchronous test. For example, the short duration animation
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* might be finished when animation.ready has been fulfilled because of slow
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* platforms or busyness of the main thread.
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* Setting short duration to cancel its animation does not matter but
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* if you don't want to cancel the animation, consider using longer duration.
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*/
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const MS_PER_SEC = 1000;
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/* The recommended minimum precision to use for time values[1].
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*
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* [1] https://drafts.csswg.org/web-animations/#precision-of-time-values
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*/
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var TIME_PRECISION = 0.0005; // ms
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/*
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* Allow implementations to substitute an alternative method for comparing
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* times based on their precision requirements.
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*/
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function assert_times_equal(actual, expected, description) {
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assert_approx_equals(actual, expected, TIME_PRECISION * 2, description);
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}
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/*
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* Compare a time value based on its precision requirements with a fixed value.
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*/
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function assert_time_equals_literal(actual, expected, description) {
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assert_approx_equals(actual, expected, TIME_PRECISION, description);
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}
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/*
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* Compare matrix string like 'matrix(1, 0, 0, 1, 100, 0)'.
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* This function allows error, 0.01, because on Android when we are scaling down
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* the document, it results in some errors.
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*/
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function assert_matrix_equals(actual, expected, description) {
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var matrixRegExp = /^matrix\((.+),(.+),(.+),(.+),(.+),(.+)\)/;
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assert_regexp_match(actual, matrixRegExp,
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'Actual value should be a matrix')
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assert_regexp_match(expected, matrixRegExp,
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'Expected value should be a matrix');
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var actualMatrixArray = actual.match(matrixRegExp).slice(1).map(Number);
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var expectedMatrixArray = expected.match(matrixRegExp).slice(1).map(Number);
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assert_equals(actualMatrixArray.length, expectedMatrixArray.length,
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'Array lengths should be equal (got \'' + expected + '\' and \'' + actual +
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'\'): ' + description);
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for (var i = 0; i < actualMatrixArray.length; i++) {
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assert_approx_equals(actualMatrixArray[i], expectedMatrixArray[i], 0.01,
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'Matrix array should be equal (got \'' + expected + '\' and \'' + actual +
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'\'): ' + description);
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}
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}
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/**
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* Compare given values which are same format of
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* KeyframeEffectReadonly::GetProperties.
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*/
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function assert_properties_equal(actual, expected) {
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assert_equals(actual.length, expected.length);
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const compareProperties = (a, b) =>
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a.property == b.property ? 0 : (a.property < b.property ? -1 : 1);
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const sortedActual = actual.sort(compareProperties);
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const sortedExpected = expected.sort(compareProperties);
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const serializeValues = values =>
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values.map(value =>
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'{ ' +
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[ 'offset', 'value', 'easing', 'composite' ].map(
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member => `${member}: ${value[member]}`
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).join(', ') +
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' }')
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.join(', ');
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for (let i = 0; i < sortedActual.length; i++) {
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assert_equals(sortedActual[i].property,
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sortedExpected[i].property,
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'CSS property name should match');
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assert_equals(serializeValues(sortedActual[i].values),
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serializeValues(sortedExpected[i].values),
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`Values arrays do not match for `
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+ `${sortedActual[i].property} property`);
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}
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}
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/**
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* Construct a object which is same to a value of
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* KeyframeEffectReadonly::GetProperties().
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* The method returns undefined as a value in case of missing keyframe.
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* Therefor, we can use undefined for |value| and |easing| parameter.
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* @param offset - keyframe offset. e.g. 0.1
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* @param value - any keyframe value. e.g. undefined '1px', 'center', 0.5
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* @param composite - 'replace', 'add', 'accumulate'
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* @param easing - e.g. undefined, 'linear', 'ease' and so on
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* @return Object -
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* e.g. { offset: 0.1, value: '1px', composite: 'replace', easing: 'ease'}
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*/
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function valueFormat(offset, value, composite, easing) {
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return { offset: offset, value: value, easing: easing, composite: composite };
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}
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/**
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* Appends a div to the document body and creates an animation on the div.
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* NOTE: This function asserts when trying to create animations with durations
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* shorter than 100s because the shorter duration may cause intermittent
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* failures. If you are not sure how long it is suitable, use 100s; it's
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* long enough but shorter than our test framework timeout (330s).
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* If you really need to use shorter durations, use animate() function directly.
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*
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* @param t The testharness.js Test object. If provided, this will be used
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* to register a cleanup callback to remove the div when the test
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* finishes.
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* @param attrs A dictionary object with attribute names and values to set on
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* the div.
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* @param frames The keyframes passed to Element.animate().
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* @param options The options passed to Element.animate().
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*/
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function addDivAndAnimate(t, attrs, frames, options) {
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let animDur = (typeof options === 'object') ?
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options.duration : options;
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assert_greater_than_equal(animDur, 100 * MS_PER_SEC,
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'Clients of this addDivAndAnimate API must request a duration ' +
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'of at least 100s, to avoid intermittent failures from e.g.' +
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'the main thread being busy for an extended period');
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return addDiv(t, attrs).animate(frames, options);
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}
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/**
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* Appends a div to the document body.
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*
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* @param t The testharness.js Test object. If provided, this will be used
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* to register a cleanup callback to remove the div when the test
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* finishes.
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*
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* @param attrs A dictionary object with attribute names and values to set on
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* the div.
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*/
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function addDiv(t, attrs) {
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var div = document.createElement('div');
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if (attrs) {
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for (var attrName in attrs) {
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div.setAttribute(attrName, attrs[attrName]);
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}
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}
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document.body.appendChild(div);
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if (t && typeof t.add_cleanup === 'function') {
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t.add_cleanup(function() {
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if (div.parentNode) {
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div.remove();
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}
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});
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}
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return div;
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}
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/**
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* Appends a style div to the document head.
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*
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* @param t The testharness.js Test object. If provided, this will be used
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* to register a cleanup callback to remove the style element
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* when the test finishes.
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*
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* @param rules A dictionary object with selector names and rules to set on
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* the style sheet.
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*/
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function addStyle(t, rules) {
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var extraStyle = document.createElement('style');
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document.head.appendChild(extraStyle);
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if (rules) {
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var sheet = extraStyle.sheet;
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for (var selector in rules) {
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sheet.insertRule(selector + '{' + rules[selector] + '}',
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sheet.cssRules.length);
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}
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}
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if (t && typeof t.add_cleanup === 'function') {
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t.add_cleanup(function() {
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extraStyle.remove();
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});
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}
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}
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/**
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* Takes a CSS property (e.g. margin-left) and returns the equivalent IDL
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* name (e.g. marginLeft).
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*/
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function propertyToIDL(property) {
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var prefixMatch = property.match(/^-(\w+)-/);
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if (prefixMatch) {
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var prefix = prefixMatch[1] === 'moz' ? 'Moz' : prefixMatch[1];
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property = prefix + property.substring(prefixMatch[0].length - 1);
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}
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// https://drafts.csswg.org/cssom/#css-property-to-idl-attribute
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return property.replace(/-([a-z])/gi, function(str, group) {
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return group.toUpperCase();
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});
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}
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/**
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* Promise wrapper for requestAnimationFrame.
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*/
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function waitForFrame() {
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return new Promise(function(resolve, reject) {
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window.requestAnimationFrame(resolve);
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});
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}
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/**
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* Waits for a requestAnimationFrame callback in the next refresh driver tick.
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* Note that 'dom.animations-api.core.enabled' pref should be true to use this
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* function.
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*/
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function waitForNextFrame() {
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const timeAtStart = document.timeline.currentTime;
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return new Promise(resolve => {
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window.requestAnimationFrame(() => {
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if (timeAtStart === document.timeline.currentTime) {
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window.requestAnimationFrame(resolve);
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} else {
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resolve();
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}
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});
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});
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}
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/**
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* Returns a Promise that is resolved after the given number of consecutive
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* animation frames have occured (using requestAnimationFrame callbacks).
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*
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* @param frameCount The number of animation frames.
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* @param onFrame An optional function to be processed in each animation frame.
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*/
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function waitForAnimationFrames(frameCount, onFrame) {
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const timeAtStart = document.timeline.currentTime;
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return new Promise(function(resolve, reject) {
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function handleFrame() {
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if (onFrame && typeof onFrame === 'function') {
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onFrame();
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}
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if (timeAtStart != document.timeline.currentTime &&
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--frameCount <= 0) {
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resolve();
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} else {
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window.requestAnimationFrame(handleFrame); // wait another frame
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}
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}
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window.requestAnimationFrame(handleFrame);
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});
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}
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/**
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* Promise wrapper for requestIdleCallback.
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*/
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function waitForIdle() {
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return new Promise(resolve => {
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requestIdleCallback(resolve);
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});
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}
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/**
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* Wrapper that takes a sequence of N animations and returns:
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*
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* Promise.all([animations[0].ready, animations[1].ready, ... animations[N-1].ready]);
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*/
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function waitForAllAnimations(animations) {
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return Promise.all(animations.map(function(animation) {
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return animation.ready;
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}));
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}
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/**
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* Flush the computed style for the given element. This is useful, for example,
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* when we are testing a transition and need the initial value of a property
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* to be computed so that when we synchronouslyet set it to a different value
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* we actually get a transition instead of that being the initial value.
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*/
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function flushComputedStyle(elem) {
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var cs = getComputedStyle(elem);
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cs.marginLeft;
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}
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if (opener) {
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for (var funcName of ["async_test", "assert_not_equals", "assert_equals",
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"assert_approx_equals", "assert_less_than",
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"assert_less_than_equal", "assert_greater_than",
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"assert_between_inclusive",
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"assert_true", "assert_false",
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"assert_class_string", "assert_throws",
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"assert_unreached", "assert_regexp_match",
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"promise_test", "test"]) {
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if (opener[funcName]) {
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window[funcName] = opener[funcName].bind(opener);
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}
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}
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window.EventWatcher = opener.EventWatcher;
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function done() {
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opener.add_completion_callback(function() {
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self.close();
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});
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opener.done();
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}
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}
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/*
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* Returns a promise that is resolved when the document has finished loading.
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*/
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function waitForDocumentLoad() {
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return new Promise(function(resolve, reject) {
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if (document.readyState === "complete") {
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resolve();
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} else {
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window.addEventListener("load", resolve);
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}
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});
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}
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/*
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* Enters test refresh mode, and restores the mode when |t| finishes.
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*/
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function useTestRefreshMode(t) {
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function ensureNoSuppressedPaints() {
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return new Promise(resolve => {
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function checkSuppressedPaints() {
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if (!SpecialPowers.DOMWindowUtils.paintingSuppressed) {
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resolve();
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} else {
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window.requestAnimationFrame(checkSuppressedPaints);
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}
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}
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checkSuppressedPaints();
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});
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}
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return ensureNoSuppressedPaints().then(() => {
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SpecialPowers.DOMWindowUtils.advanceTimeAndRefresh(0);
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t.add_cleanup(() => {
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SpecialPowers.DOMWindowUtils.restoreNormalRefresh();
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});
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});
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}
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/**
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* Returns true if off-main-thread animations.
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*/
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function isOMTAEnabled() {
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const OMTAPrefKey = 'layers.offmainthreadcomposition.async-animations';
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return SpecialPowers.DOMWindowUtils.layerManagerRemote &&
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SpecialPowers.getBoolPref(OMTAPrefKey);
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}
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/**
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* Returns true if the document is styled by servo.
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*/
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function isStyledByServo() {
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return SpecialPowers.DOMWindowUtils.isStyledByServo;
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}
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/**
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* Append an SVG element to the target element.
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*
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* @param target The element which want to append.
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* @param attrs A array object with attribute name and values to set on
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* the SVG element.
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* @return An SVG outer element.
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*/
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function addSVGElement(target, tag, attrs) {
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if (!target) {
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return null;
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}
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var element = document.createElementNS('http://www.w3.org/2000/svg', tag);
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if (attrs) {
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for (var attrName in attrs) {
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element.setAttributeNS(null, attrName, attrs[attrName]);
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}
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}
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target.appendChild(element);
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return element;
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}
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/*
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* Get Animation distance between two specified values for a specific property.
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*
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* @param target The target element.
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* @param prop The CSS property.
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* @param v1 The first property value.
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* @param v2 The Second property value.
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*
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* @return The distance between |v1| and |v2| for |prop| on |target|.
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*/
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function getDistance(target, prop, v1, v2) {
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if (!target) {
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return 0.0;
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}
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return SpecialPowers.DOMWindowUtils
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.computeAnimationDistance(target, prop, v1, v2);
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}
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/*
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* A promise wrapper for waiting MozAfterPaint.
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*/
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function waitForPaints() {
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// FIXME: Bug 1415065. Instead waiting for two requestAnimationFrames, we
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// should wait for MozAfterPaint once after MozAfterPaint is fired properly
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// (bug 1341294).
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return waitForAnimationFrames(2);
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}
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// Returns true if |aAnimation| begins at the current timeline time. We
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// sometimes need to detect this case because if we started an animation
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// asynchronously (e.g. using play()) and then ended up running the next frame
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// at precisely the time the animation started (due to aligning with vsync
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// refresh rate) then we won't end up restyling in that frame.
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function animationStartsRightNow(aAnimation) {
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return aAnimation.startTime === aAnimation.timeline.currentTime &&
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aAnimation.currentTime === 0;
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}
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