@angular/animations
Version:
Angular - animations integration with web-animations
61 lines • 11.1 kB
JavaScript
import { allowPreviousPlayerStylesMerge, balancePreviousStylesIntoKeyframes, copyStyles } from '../../util';
import { CssKeyframesDriver } from '../css_keyframes/css_keyframes_driver';
import { containsElement, invokeQuery, isBrowser, matchesElement, validateStyleProperty } from '../shared';
import { packageNonAnimatableStyles } from '../special_cased_styles';
import { WebAnimationsPlayer } from './web_animations_player';
export class WebAnimationsDriver {
constructor() {
this._isNativeImpl = /\{\s*\[native\s+code\]\s*\}/.test(getElementAnimateFn().toString());
this._cssKeyframesDriver = new CssKeyframesDriver();
}
validateStyleProperty(prop) {
return validateStyleProperty(prop);
}
matchesElement(element, selector) {
return matchesElement(element, selector);
}
containsElement(elm1, elm2) {
return containsElement(elm1, elm2);
}
query(element, selector, multi) {
return invokeQuery(element, selector, multi);
}
computeStyle(element, prop, defaultValue) {
return window.getComputedStyle(element)[prop];
}
overrideWebAnimationsSupport(supported) {
this._isNativeImpl = supported;
}
animate(element, keyframes, duration, delay, easing, previousPlayers = [], scrubberAccessRequested) {
const useKeyframes = !scrubberAccessRequested && !this._isNativeImpl;
if (useKeyframes) {
return this._cssKeyframesDriver.animate(element, keyframes, duration, delay, easing, previousPlayers);
}
const fill = delay == 0 ? 'both' : 'forwards';
const playerOptions = { duration, delay, fill };
// we check for this to avoid having a null|undefined value be present
// for the easing (which results in an error for certain browsers #9752)
if (easing) {
playerOptions['easing'] = easing;
}
const previousStyles = {};
const previousWebAnimationPlayers = previousPlayers.filter(player => player instanceof WebAnimationsPlayer);
if (allowPreviousPlayerStylesMerge(duration, delay)) {
previousWebAnimationPlayers.forEach(player => {
let styles = player.currentSnapshot;
Object.keys(styles).forEach(prop => previousStyles[prop] = styles[prop]);
});
}
keyframes = keyframes.map(styles => copyStyles(styles, false));
keyframes = balancePreviousStylesIntoKeyframes(element, keyframes, previousStyles);
const specialStyles = packageNonAnimatableStyles(element, keyframes);
return new WebAnimationsPlayer(element, keyframes, playerOptions, specialStyles);
}
}
export function supportsWebAnimations() {
return typeof getElementAnimateFn() === 'function';
}
function getElementAnimateFn() {
return (isBrowser() && Element.prototype['animate']) || {};
}
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'both' : 'forwards';\n    const playerOptions: {[key: string]: string|number} = {duration, delay, fill};\n    // we check for this to avoid having a null|undefined value be present\n    // for the easing (which results in an error for certain browsers #9752)\n    if (easing) {\n      playerOptions['easing'] = easing;\n    }\n\n    const previousStyles: {[key: string]: any} = {};\n    const previousWebAnimationPlayers = <WebAnimationsPlayer[]>previousPlayers.filter(\n        player => player instanceof WebAnimationsPlayer);\n\n    if (allowPreviousPlayerStylesMerge(duration, delay)) {\n      previousWebAnimationPlayers.forEach(player => {\n        let styles = player.currentSnapshot;\n        Object.keys(styles).forEach(prop => previousStyles[prop] = styles[prop]);\n      });\n    }\n\n    keyframes = keyframes.map(styles => copyStyles(styles, false));\n    keyframes = balancePreviousStylesIntoKeyframes(element, keyframes, previousStyles);\n    const specialStyles = packageNonAnimatableStyles(element, keyframes);\n    return new WebAnimationsPlayer(element, keyframes, playerOptions, specialStyles);\n  }\n}\n\nexport function supportsWebAnimations() {\n  return typeof getElementAnimateFn() === 'function';\n}\n\nfunction getElementAnimateFn(): any {\n  return (isBrowser() && (<any>Element).prototype['animate']) || {};\n}\n"]}