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feat(List): support scroll API (#3286)
* feat(list): support virtual scroll * feat(list): support virtual scroll * chore: fix docs and demo * chore: fix lint * chore: fix lint * chore: fix test * chore: fix test * chore: fix test
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Submodule _common
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| +19 −0 | docs/mobile/api/image-viewer.en-US.md | |
| +6 −5 | docs/mobile/api/image-viewer.md | |
| +26 −0 | docs/web/api/list.en-US.md | |
| +30 −0 | docs/web/api/list.md | |
| +1 −1 | style/mobile/components/_index.less |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,13 @@ | ||
| <template> | ||
| <t-list style="height: 300px" :scroll="{ type: 'virtual' }" | ||
| ><t-list-item v-for="(item, index) in list" :key="index"> | ||
| <t-list-item-meta :image="imageUrl" title="列表标题" :description="item.content" /></t-list-item | ||
| ></t-list> | ||
| </template> | ||
| <script setup> | ||
| const list = []; | ||
| const imageUrl = 'https://tdesign.gtimg.com/site/avatar.jpg'; | ||
| for (let i = 0; i < 3000; i++) { | ||
| list.push({ content: `第${i + 1}个列表内容的描述性文字` }); | ||
| } | ||
| </script> |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,22 @@ | ||
| <template> | ||
| <t-list style="height: 300px" :scroll="{ type: 'virtual' }" | ||
| ><t-list-item v-for="(item, index) in list" :key="index"> | ||
| <t-list-item-meta :image="imageUrl" title="列表标题" :description="item.content" /></t-list-item | ||
| ></t-list> | ||
| </template> | ||
| <script> | ||
| const list = []; | ||
| const imageUrl = 'https://tdesign.gtimg.com/site/avatar.jpg'; | ||
| for (let i = 0; i < 3000; i++) { | ||
| list.push({ content: `第${i + 1}个列表内容的描述性文字` }); | ||
| } | ||
| export default { | ||
| data() { | ||
| return { | ||
| list, | ||
| imageUrl, | ||
| }; | ||
| }, | ||
| }; | ||
| </script> |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,28 @@ | ||
| import { VNode } from 'vue'; | ||
| import { computed, getCurrentInstance } from '@vue/composition-api'; | ||
|
|
||
| const useListItems = () => { | ||
| const instance = getCurrentInstance(); | ||
| const currentSlots = instance.proxy.$slots.default || []; | ||
|
|
||
| const listItems = computed(() => { | ||
| const computedListItems: VNode[] = []; | ||
| currentSlots.forEach((child) => { | ||
| if (child.componentOptions?.tag === 't-list-item') { | ||
| computedListItems.push({ | ||
| class: child.data.staticClass, | ||
| style: child.data.staticStyle, | ||
| ...child.componentOptions.propsData, | ||
| slots: () => child.componentOptions.children, | ||
| } as unknown as VNode); | ||
| } | ||
| }); | ||
| return computedListItems; | ||
| }); | ||
|
|
||
| return { | ||
| listItems, | ||
| }; | ||
| }; | ||
|
|
||
| export default useListItems; |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,57 @@ | ||
| import { Ref, computed } from '@vue/composition-api'; | ||
| import useVirtualScroll from '../../hooks/useVirtualScrollNew'; | ||
| import { TdListProps } from '../type'; | ||
| import { Styles } from '../../common'; | ||
|
|
||
| const useListVirtualScroll = (scroll: TdListProps['scroll'], listRef: Ref<HTMLElement>, listItems: Ref<any[]>) => { | ||
| const virtualScrollParams = computed(() => ({ | ||
| data: listItems.value, | ||
| scroll, | ||
| })); | ||
| const virtualConfig = useVirtualScroll(listRef, virtualScrollParams); | ||
| const isVirtualScroll = computed(() => virtualConfig.isVirtualScroll.value); | ||
| let lastScrollY = -1; | ||
|
|
||
| const onInnerVirtualScroll = (e: WheelEvent) => { | ||
| const target = (e.target || e.srcElement) as HTMLElement; | ||
| const top = target.scrollTop; | ||
| if (lastScrollY !== top) { | ||
| virtualConfig.isVirtualScroll.value && virtualConfig.handleScroll(); | ||
| } else { | ||
| lastScrollY = -1; | ||
| } | ||
| lastScrollY = top; | ||
| }; | ||
|
|
||
| const cursorStyle = computed( | ||
| () => ({ | ||
| position: 'absolute', | ||
| width: '1px', | ||
| height: '1px', | ||
| transition: 'transform 0.2s', | ||
| transform: `translate(0, ${virtualConfig.scrollHeight.value}px)`, | ||
| '-ms-transform': `translate(0, ${virtualConfig.scrollHeight.value}px)`, | ||
| '-moz-transform': `translate(0, ${virtualConfig.scrollHeight.value}px)`, | ||
| '-webkit-transform': `translate(0, ${virtualConfig.scrollHeight.value}px)`, | ||
| } as Styles), | ||
| ); | ||
|
|
||
| const listStyle = computed( | ||
| () => ({ | ||
| transform: `translate(0, ${virtualConfig.translateY.value}px)`, | ||
| '-ms-transform': `translate(0, ${virtualConfig.translateY.value}px)`, | ||
| '-moz-transform': `translate(0, ${virtualConfig.translateY.value}px)`, | ||
| '-webkit-transform': `translate(0, ${virtualConfig.translateY.value}px)`, | ||
| } as Styles), | ||
| ); | ||
|
|
||
| return { | ||
| virtualConfig, | ||
| cursorStyle, | ||
| listStyle, | ||
| isVirtualScroll, | ||
| onInnerVirtualScroll, | ||
| }; | ||
| }; | ||
|
|
||
| export default useListVirtualScroll; |
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