| 1 | /**
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| 2 | * @license
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| 3 | * Copyright Google LLC All Rights Reserved.
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| 4 | *
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| 5 | * Use of this source code is governed by an MIT-style license that can be
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| 6 | * found in the LICENSE file at https://angular.io/license
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| 7 | */
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| 8 | // TODO(jelbourn): move this to live with the rest of the scrolling code
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| 9 | // TODO(jelbourn): someday replace this with IntersectionObservers
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| 10 | /**
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| 11 | * Gets whether an element is scrolled outside of view by any of its parent scrolling containers.
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| 12 | * @param element Dimensions of the element (from getBoundingClientRect)
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| 13 | * @param scrollContainers Dimensions of element's scrolling containers (from getBoundingClientRect)
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| 14 | * @returns Whether the element is scrolled out of view
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| 15 | * @docs-private
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| 16 | */
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| 17 | export function isElementScrolledOutsideView(element, scrollContainers) {
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| 18 | return scrollContainers.some(containerBounds => {
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| 19 | const outsideAbove = element.bottom < containerBounds.top;
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| 20 | const outsideBelow = element.top > containerBounds.bottom;
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| 21 | const outsideLeft = element.right < containerBounds.left;
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| 22 | const outsideRight = element.left > containerBounds.right;
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| 23 | return outsideAbove || outsideBelow || outsideLeft || outsideRight;
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| 24 | });
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| 25 | }
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| 26 | /**
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| 27 | * Gets whether an element is clipped by any of its scrolling containers.
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| 28 | * @param element Dimensions of the element (from getBoundingClientRect)
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| 29 | * @param scrollContainers Dimensions of element's scrolling containers (from getBoundingClientRect)
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| 30 | * @returns Whether the element is clipped
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| 31 | * @docs-private
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| 32 | */
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| 33 | export function isElementClippedByScrolling(element, scrollContainers) {
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| 34 | return scrollContainers.some(scrollContainerRect => {
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| 35 | const clippedAbove = element.top < scrollContainerRect.top;
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| 36 | const clippedBelow = element.bottom > scrollContainerRect.bottom;
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| 37 | const clippedLeft = element.left < scrollContainerRect.left;
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| 38 | const clippedRight = element.right > scrollContainerRect.right;
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| 39 | return clippedAbove || clippedBelow || clippedLeft || clippedRight;
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| 40 | });
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| 41 | }
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| 42 | //# sourceMappingURL=data:application/json;base64,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 |
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