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1 | import { AnimationFrameAction } from './AnimationFrameAction';
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2 | import { AnimationFrameScheduler } from './AnimationFrameScheduler';
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3 |
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4 | /**
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5 | *
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6 | * Animation Frame Scheduler
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7 | *
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8 | * <span class="informal">Perform task when `window.requestAnimationFrame` would fire</span>
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9 | *
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10 | * When `animationFrame` scheduler is used with delay, it will fall back to {@link asyncScheduler} scheduler
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11 | * behaviour.
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12 | *
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13 | * Without delay, `animationFrame` scheduler can be used to create smooth browser animations.
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14 | * It makes sure scheduled task will happen just before next browser content repaint,
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15 | * thus performing animations as efficiently as possible.
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16 | *
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17 | * ## Example
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18 | * Schedule div height animation
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19 | * ```ts
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20 | * // html: <div style="background: #0ff;"></div>
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21 | * import { animationFrameScheduler } from 'rxjs';
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22 | *
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23 | * const div = document.querySelector('div');
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24 | *
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25 | * animationFrameScheduler.schedule(function(height) {
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26 | * div.style.height = height + "px";
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27 | *
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28 | * this.schedule(height + 1); // `this` references currently executing Action,
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29 | * // which we reschedule with new state
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30 | * }, 0, 0);
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31 | *
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32 | * // You will see a div element growing in height
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33 | * ```
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34 | */
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35 | export const animationFrameScheduler = new AnimationFrameScheduler(AnimationFrameAction);
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36 |
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37 | /**
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38 | * @deprecated renamed. Use {@link animationFrameScheduler}
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39 | */
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40 | export const animationFrame = animationFrameScheduler;
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