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Port and use VirtualList in TTSSeedsExplorer (#1448)
<!-- Пишите **НИЖЕ** заголовков и **ВЫШЕ** комментариев, иначе что то может пойти не так. --> <!-- Вы можете прочитать Contributing.MD, если хотите узнать больше. --> ## Что этот PR делает Кое-какой порт VirtualList с ТГ, и использование его в ТТС эксплорере Плюс слегка переделанный интерфейс под стать ТГ ## Почему это хорошо для игры Чуть меньше лагает, чуть лучше выглядит ## Изображения изменений  ## Changelog :cl: tweak: ТТС эксплорер стал ещё немного лучше /:cl:
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,73 @@ | ||
| import { Component, createRef } from 'inferno'; | ||
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| interface Props { | ||
| children: any; | ||
| } | ||
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| /** | ||
| * A vertical list that renders items to fill space up to the extents of the | ||
| * current window, and then defers rendering of other items until they come | ||
| * into view. | ||
| */ | ||
| export class VirtualList extends Component<Props, any> { | ||
| containerRef: any; | ||
| intervalId: any; | ||
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| constructor(props: Props) { | ||
| super(props); | ||
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| this.containerRef = createRef(); | ||
| this.state = { | ||
| visibleElements: 1, | ||
| padding: 0, | ||
| }; | ||
| } | ||
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| adjustExtents = () => { | ||
| const { children } = this.props; | ||
| const { visibleElements } = this.state; | ||
| const current = this.containerRef.current; | ||
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| if (!children || !Array.isArray(children) || !current || visibleElements >= children.length) { | ||
| return; | ||
| } | ||
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| const unusedArea = document.body.offsetHeight - current.getBoundingClientRect().bottom; | ||
| const averageItemHeight = Math.ceil(current.offsetHeight / visibleElements); | ||
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| if (unusedArea > 0) { | ||
| const newVisibleElements = Math.min( | ||
| children.length, | ||
| visibleElements + Math.max(1, Math.ceil(unusedArea / averageItemHeight)) | ||
| ); | ||
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| this.setState({ | ||
| visibleElements: newVisibleElements, | ||
| padding: (children.length - newVisibleElements) * averageItemHeight, | ||
| }); | ||
| } | ||
| }; | ||
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| componentDidMount() { | ||
| this.adjustExtents(); | ||
| this.intervalId = setInterval(this.adjustExtents, 100); | ||
| } | ||
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| componentWillUnmount() { | ||
| clearInterval(this.intervalId); | ||
| } | ||
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| render() { | ||
| const { children } = this.props; | ||
| const { visibleElements, padding } = this.state; | ||
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| return ( | ||
| <div className={'VirtualList'}> | ||
| <div className={'VirtualList__Container'} ref={this.containerRef}> | ||
| {Array.isArray(children) ? children.slice(0, visibleElements) : null} | ||
| </div> | ||
| <div className={'VirtualList__Padding'} style={{ 'padding-bottom': `${padding}px` }} /> | ||
| </div> | ||
| ); | ||
| } | ||
| } |
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