fix(animations): properly handle cancelled animation style application
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858dea98e5
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105e920b69
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@ -18,7 +18,7 @@ import {ENTER_CLASSNAME, LEAVE_CLASSNAME, NG_ANIMATING_CLASSNAME, NG_ANIMATING_S
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import {AnimationDriver} from './animation_driver';
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import {getOrSetAsInMap, listenOnPlayer, makeAnimationEvent, normalizeKeyframes, optimizeGroupPlayer} from './shared';
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const EMPTY_PLAYER_ARRAY: AnimationPlayer[] = [];
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const EMPTY_PLAYER_ARRAY: TransitionAnimationPlayer[] = [];
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const NULL_REMOVAL_STATE: ElementAnimationState = {
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namespaceId: '',
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setForRemoval: null,
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@ -708,7 +708,14 @@ export class TransitionAnimationEngine {
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if (this._namespaceList.length &&
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(this.totalQueuedPlayers || this.collectedLeaveElements.length)) {
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players = this._flushAnimations(microtaskId);
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const cleanupFns: Function[] = [];
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try {
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players = this._flushAnimations(cleanupFns, microtaskId);
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} finally {
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for (let i = 0; i < cleanupFns.length; i++) {
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cleanupFns[i]();
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}
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}
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} else {
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for (let i = 0; i < this.collectedLeaveElements.length; i++) {
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const element = this.collectedLeaveElements[i];
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@ -737,7 +744,8 @@ export class TransitionAnimationEngine {
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}
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}
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private _flushAnimations(microtaskId: number): TransitionAnimationPlayer[] {
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private _flushAnimations(cleanupFns: Function[], microtaskId: number):
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TransitionAnimationPlayer[] {
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const subTimelines = new ElementInstructionMap();
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const skippedPlayers: TransitionAnimationPlayer[] = [];
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const skippedPlayersMap = new Map<any, AnimationPlayer[]>();
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@ -745,7 +753,6 @@ export class TransitionAnimationEngine {
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const queriedElements = new Map<any, TransitionAnimationPlayer[]>();
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const allPreStyleElements = new Map<any, Set<string>>();
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const allPostStyleElements = new Map<any, Set<string>>();
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const cleanupFns: Function[] = [];
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const bodyNode = getBodyNode();
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const allEnterNodes: any[] = this.collectedEnterElements.length ?
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@ -855,7 +862,6 @@ export class TransitionAnimationEngine {
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instruction.errors !.forEach(error => { msg += `- ${error}\n`; });
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});
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cleanupFns.forEach(fn => fn());
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allPlayers.forEach(player => player.destroy());
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throw new Error(msg);
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}
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@ -1011,7 +1017,6 @@ export class TransitionAnimationEngine {
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player.play();
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});
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cleanupFns.forEach(fn => fn());
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return rootPlayers;
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}
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@ -1107,20 +1112,16 @@ export class TransitionAnimationEngine {
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const allSubElements = new Set<any>();
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const allNewPlayers = instruction.timelines.map(timelineInstruction => {
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const element = timelineInstruction.element;
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allConsumedElements.add(element);
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// FIXME (matsko): make sure to-be-removed animations are removed properly
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const details = element[REMOVAL_FLAG];
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if (details && details.removedBeforeQueried) return new NoopAnimationPlayer();
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const isQueriedElement = element !== rootElement;
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let previousPlayers: AnimationPlayer[] = EMPTY_PLAYER_ARRAY;
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if (!allConsumedElements.has(element)) {
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allConsumedElements.add(element);
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const _previousPlayers = allPreviousPlayersMap.get(element);
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if (_previousPlayers) {
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previousPlayers = _previousPlayers.map(p => p.getRealPlayer());
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}
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}
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const previousPlayers =
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(allPreviousPlayersMap.get(element) || EMPTY_PLAYER_ARRAY).map(p => p.getRealPlayer());
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const preStyles = preStylesMap.get(element);
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const postStyles = postStylesMap.get(element);
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const keyframes = normalizeKeyframes(
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@ -7,7 +7,7 @@
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*/
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import {AnimationPlayer} from '@angular/animations';
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import {copyStyles, eraseStyles, setStyles} from '../../util';
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import {allowPreviousPlayerStylesMerge, copyStyles} from '../../util';
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import {DOMAnimation} from './dom_animation';
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@ -26,7 +26,7 @@ export class WebAnimationsPlayer implements AnimationPlayer {
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public time = 0;
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public parentPlayer: AnimationPlayer|null = null;
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public previousStyles: {[styleName: string]: string | number};
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public previousStyles: {[styleName: string]: string | number} = {};
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public currentSnapshot: {[styleName: string]: string | number} = {};
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constructor(
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@ -37,11 +37,12 @@ export class WebAnimationsPlayer implements AnimationPlayer {
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this._delay = <number>options['delay'] || 0;
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this.time = this._duration + this._delay;
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this.previousStyles = {};
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previousPlayers.forEach(player => {
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let styles = player.currentSnapshot;
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Object.keys(styles).forEach(prop => this.previousStyles[prop] = styles[prop]);
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});
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if (allowPreviousPlayerStylesMerge(this._duration, this._delay)) {
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previousPlayers.forEach(player => {
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let styles = player.currentSnapshot;
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Object.keys(styles).forEach(prop => this.previousStyles[prop] = styles[prop]);
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});
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}
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}
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private _onFinish() {
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@ -213,3 +213,7 @@ const DASH_CASE_REGEXP = /-+([a-z0-9])/g;
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export function dashCaseToCamelCase(input: string): string {
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return input.replace(DASH_CASE_REGEXP, (...m: any[]) => m[1].toUpperCase());
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}
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export function allowPreviousPlayerStylesMerge(duration: number, delay: number) {
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return duration === 0 || delay === 0;
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}
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@ -9,7 +9,7 @@ import {AUTO_STYLE, AnimationPlayer, NoopAnimationPlayer, ɵStyleData} from '@an
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import {AnimationDriver} from '../../src/render/animation_driver';
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import {containsElement, invokeQuery, matchesElement} from '../../src/render/shared';
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import {allowPreviousPlayerStylesMerge} from '../../src/util';
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/**
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* @experimental Animation support is experimental.
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@ -56,12 +56,15 @@ export class MockAnimationPlayer extends NoopAnimationPlayer {
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public duration: number, public delay: number, public easing: string,
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public previousPlayers: any[]) {
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super();
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previousPlayers.forEach(player => {
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if (player instanceof MockAnimationPlayer) {
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const styles = player.currentSnapshot;
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Object.keys(styles).forEach(prop => this.previousStyles[prop] = styles[prop]);
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}
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});
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if (allowPreviousPlayerStylesMerge(duration, delay)) {
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previousPlayers.forEach(player => {
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if (player instanceof MockAnimationPlayer) {
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const styles = player.currentSnapshot;
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Object.keys(styles).forEach(prop => this.previousStyles[prop] = styles[prop]);
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}
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});
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}
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this.totalTime = delay + duration;
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}
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@ -782,7 +782,7 @@ export function main() {
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expect(players.length).toEqual(3);
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const [p1, p2, p3] = players;
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expect(p1.previousStyles).toEqual({opacity: AUTO_STYLE});
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expect(p2.previousStyles).toEqual({});
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expect(p2.previousStyles).toEqual({opacity: AUTO_STYLE});
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expect(p3.previousStyles).toEqual({});
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});
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@ -1000,8 +1000,9 @@ export function main() {
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}
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});
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it('should properly cancel items that were queried into a former animation', () => {
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@Component({
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it('should properly cancel items that were queried into a former animation and pass in the associated styles into the follow-up players per element',
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() => {
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@Component({
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selector: 'ani-cmp',
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template: `
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<div [@myAnimation]="exp" class="parent">
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@ -1024,45 +1025,45 @@ export function main() {
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])]
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})
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class Cmp {
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public exp: any;
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public items: any[];
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}
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public exp: any;
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public items: any[];
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}
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TestBed.configureTestingModule({declarations: [Cmp]});
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TestBed.configureTestingModule({declarations: [Cmp]});
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const engine = TestBed.get(ɵAnimationEngine);
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const fixture = TestBed.createComponent(Cmp);
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const cmp = fixture.componentInstance;
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const engine = TestBed.get(ɵAnimationEngine);
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const fixture = TestBed.createComponent(Cmp);
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const cmp = fixture.componentInstance;
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cmp.exp = 'on';
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cmp.items = [0, 1, 2, 3, 4];
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fixture.detectChanges();
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engine.flush();
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cmp.exp = 'on';
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cmp.items = [0, 1, 2, 3, 4];
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fixture.detectChanges();
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engine.flush();
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const previousPlayers = getLog();
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expect(previousPlayers.length).toEqual(10);
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resetLog();
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const previousPlayers = getLog();
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expect(previousPlayers.length).toEqual(10);
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resetLog();
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cmp.exp = 'off';
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cmp.items = [0, 1, 2];
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fixture.detectChanges();
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engine.flush();
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cmp.exp = 'off';
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cmp.items = [0, 1, 2];
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fixture.detectChanges();
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engine.flush();
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const players = getLog();
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expect(players.length).toEqual(4);
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const players = getLog();
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expect(players.length).toEqual(4);
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const [p1, p2, p3, p4] = players;
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const [p1p1, p1p2] = p1.previousPlayers;
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const [p2p1, p2p2] = p2.previousPlayers;
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const [p1, p2, p3, p4] = players;
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expect(p1p1).toBe(previousPlayers[3]);
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expect(p1p2).toBe(previousPlayers[8]);
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expect(p2p1).toBe(previousPlayers[4]);
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expect(p2p2).toBe(previousPlayers[9]);
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// p1 && p2 are the starting players for item3 and item4
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expect(p1.previousStyles)
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.toEqual({opacity: AUTO_STYLE, width: AUTO_STYLE, height: AUTO_STYLE});
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expect(p2.previousStyles)
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.toEqual({opacity: AUTO_STYLE, width: AUTO_STYLE, height: AUTO_STYLE});
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expect(p3.previousPlayers).toEqual([]);
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expect(p4.previousPlayers).toEqual([]);
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});
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// p3 && p4 are the following players for item3 and item4
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expect(p3.previousStyles).toEqual({});
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expect(p4.previousStyles).toEqual({});
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});
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it('should not remove a parent container if its contents are queried into by an ancestor element',
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() => {
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@ -5,10 +5,10 @@
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* Use of this source code is governed by an MIT-style license that can be
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* found in the LICENSE file at https://angular.io/license
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*/
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import {animate, state, style, transition, trigger} from '@angular/animations';
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import {AnimationDriver, ɵAnimationEngine} from '@angular/animations/browser';
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import {ɵWebAnimationsDriver, ɵWebAnimationsPlayer, ɵsupportsWebAnimations} from '@angular/animations/browser'
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import {Component, ViewChild} from '@angular/core';
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import {animate, query, state, style, transition, trigger} from '@angular/animations';
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import {AnimationDriver, ɵAnimationEngine, ɵWebAnimationsDriver, ɵWebAnimationsPlayer, ɵsupportsWebAnimations} from '@angular/animations/browser';
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import {AnimationGroupPlayer} from '@angular/animations/src/players/animation_group_player';
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import {Component} from '@angular/core';
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import {BrowserAnimationsModule} from '@angular/platform-browser/animations';
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import {TestBed} from '../../testing';
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@ -172,15 +172,125 @@ export function main() {
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{height: '100px', offset: 0}, {height: '80px', offset: 1}
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]);
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});
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it('should compute intermediate styles properly when an animation is cancelled', () => {
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@Component({
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selector: 'ani-cmp',
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template: `
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<div [@myAnimation]="exp">...</div>
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`,
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animations: [
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trigger(
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'myAnimation',
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[
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transition(
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'* => a',
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[
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style({width: 0, height: 0}),
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animate('1s', style({width: '300px', height: '600px'})),
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]),
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transition('* => b', [animate('1s', style({opacity: 0}))]),
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]),
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]
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})
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class Cmp {
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public exp: string;
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}
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TestBed.configureTestingModule({declarations: [Cmp]});
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const engine = TestBed.get(ɵAnimationEngine);
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const fixture = TestBed.createComponent(Cmp);
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const cmp = fixture.componentInstance;
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cmp.exp = 'a';
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fixture.detectChanges();
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let player = engine.players[0] !;
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let webPlayer = player.getRealPlayer() as ɵWebAnimationsPlayer;
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webPlayer.setPosition(0.5);
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cmp.exp = 'b';
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fixture.detectChanges();
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player = engine.players[0] !;
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webPlayer = player.getRealPlayer() as ɵWebAnimationsPlayer;
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expect(approximate(parseFloat(webPlayer.previousStyles['width'] as string), 150))
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.toBeLessThan(0.05);
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expect(approximate(parseFloat(webPlayer.previousStyles['height'] as string), 300))
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.toBeLessThan(0.05);
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});
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it('should compute intermediate styles properly for multiple queried elements when an animation is cancelled',
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() => {
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@Component({
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selector: 'ani-cmp',
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template: `
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<div [@myAnimation]="exp">
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<div *ngFor="let item of items" class="target"></div>
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</div>
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`,
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animations: [
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trigger(
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'myAnimation',
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[
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transition(
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'* => full', [query(
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'.target',
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[
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style({width: 0, height: 0}),
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animate('1s', style({width: '500px', height: '1000px'})),
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])]),
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transition(
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'* => empty', [query('.target', [animate('1s', style({opacity: 0}))])]),
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]),
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]
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})
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class Cmp {
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public exp: string;
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public items: any[] = [];
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}
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TestBed.configureTestingModule({declarations: [Cmp]});
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const engine = TestBed.get(ɵAnimationEngine);
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const fixture = TestBed.createComponent(Cmp);
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const cmp = fixture.componentInstance;
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cmp.exp = 'full';
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cmp.items = [0, 1, 2, 3, 4];
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fixture.detectChanges();
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let player = engine.players[0] !;
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let groupPlayer = player.getRealPlayer() as AnimationGroupPlayer;
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let players = groupPlayer.players;
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expect(players.length).toEqual(5);
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for (let i = 0; i < players.length; i++) {
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const p = players[i] as ɵWebAnimationsPlayer;
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p.setPosition(0.5);
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}
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cmp.exp = 'empty';
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cmp.items = [];
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fixture.detectChanges();
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player = engine.players[0];
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groupPlayer = player.getRealPlayer() as AnimationGroupPlayer;
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players = groupPlayer.players;
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expect(players.length).toEqual(5);
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for (let i = 0; i < players.length; i++) {
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const p = players[i] as ɵWebAnimationsPlayer;
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expect(approximate(parseFloat(p.previousStyles['width'] as string), 250))
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.toBeLessThan(0.05);
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expect(approximate(parseFloat(p.previousStyles['height'] as string), 500))
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.toBeLessThan(0.05);
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}
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});
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});
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}
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function assertStyleBetween(
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element: any, prop: string, start: string | number, end: string | number) {
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const style = (window.getComputedStyle(element) as any)[prop] as string;
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if (typeof start == 'number' && typeof end == 'number') {
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const value = parseFloat(style);
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expect(value).toBeGreaterThan(start);
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expect(value).toBeLessThan(end);
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}
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}
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function approximate(value: number, target: number) {
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return Math.abs(target - value) / value;
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}
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