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Feat(sticky-scroller): 增加 v-sticky-scroller 指令 (#4)
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,29 @@ | ||
| // Global styles for el-table with directive v-sticky-scroller | ||
| @import 'gemini-scrollbar/gemini-scrollbar.css'; | ||
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| .el-table[data-sticky-scroll] { | ||
| overflow: visible !important; | ||
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| .el-table__body-wrapper { | ||
| &::-webkit-scrollbar { | ||
| height: 0; | ||
| } | ||
| } | ||
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| &:hover, | ||
| &:focus, | ||
| &:active { | ||
| .el-table-horizontal-scrollbar .gm-scrollbar { | ||
| opacity: 1; | ||
| } | ||
| } | ||
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| .el-table-horizontal-scrollbar { | ||
| position: sticky; | ||
| height: 10px; | ||
| width: 100%; | ||
| bottom: 0; | ||
| z-index: 4; | ||
| transition: all 0.3s ease; | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,19 @@ | ||
| import { checkElTable } from '@/utils' | ||
| import Scroller from '@/utils/scroller' | ||
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| export default class StickyScroller { | ||
| static name = 'StickyScroller' | ||
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| /** | ||
| * Init directive config for Vue | ||
| * @returns {Object} directive config | ||
| */ | ||
| init() { | ||
| return { | ||
| inserted: (el, binding, vnode) => { | ||
| checkElTable(binding, vnode) | ||
| el.scroller = new Scroller(el, binding, vnode) | ||
| }, | ||
| } | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,91 @@ | ||
| // reference https://github.com/noeldelgado/gemini-scrollbar | ||
| import GeminiScrollbar from 'gemini-scrollbar' | ||
| import { throttle } from 'throttle-debounce' | ||
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| const THROTTLE_TIME = 1000 / 60 | ||
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| export default class Scroller { | ||
| constructor(el, binding, vnode) { | ||
| this.#createScroller(el, binding, vnode) | ||
| } | ||
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| /** | ||
| * Create custom horizontal scrollbar for el-table | ||
| * @param {Element} el el-table element | ||
| * @param {Object} binding binding | ||
| * @param {Object} vnode vnode | ||
| */ | ||
| async #createScroller(el, binding, vnode) { | ||
| // create scroller only once for the same el-table | ||
| if (el.scroller) { | ||
| return | ||
| } | ||
| // wait for el-table render | ||
| await vnode.componentInstance.$nextTick() | ||
| // check if el-table has horizontal scrollbar | ||
| if (el.querySelector('.is-scrolling-none')) { | ||
| return | ||
| } | ||
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| el.dataset.stickyScroll = '' | ||
| const tableBodyWrapperEl = el.querySelector('.el-table__body-wrapper') | ||
| // create scroller | ||
| const scroller = document.createElement('div') | ||
| scroller.classList.add('el-table-horizontal-scrollbar') | ||
| // set scroller content width to .el-table__body-wrapper table width | ||
| const content = document.createElement('div') | ||
| content.style.width = `${tableBodyWrapperEl.querySelector('table').offsetWidth}px` | ||
| scroller.appendChild(content) | ||
| el.appendChild(scroller) | ||
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| this.#initScrollBar(binding, scroller) | ||
| this.#initScrollSyncHandler(tableBodyWrapperEl) | ||
| } | ||
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| /** | ||
| * Init scroll bar | ||
| * @param {Object} binding binding | ||
| * @param {Element} scroller scroller element | ||
| */ | ||
| #initScrollBar(binding, scroller) { | ||
| const { always = false } = binding.modifiers | ||
| this.scrollbar = new GeminiScrollbar({ | ||
| element: scroller, | ||
| forceGemini: true, | ||
| autoshow: !always, | ||
| }).create() | ||
| // remove vertical scrollbar | ||
| this.scrollbar.element.querySelector('.gm-scrollbar.-vertical').remove() | ||
| } | ||
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| /** | ||
| * Init scroll sync handler | ||
| * @param {Element} tableBodyWrapperEl .el-table__body-wrapper element | ||
| */ | ||
| #initScrollSyncHandler(tableBodyWrapperEl) { | ||
| const scrollViewEl = this.scrollbar.getViewElement() | ||
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| // sync tableBodyWrapperEl horizontal scroll to scrollView | ||
| tableBodyWrapperEl.addEventListener('scroll', throttle(THROTTLE_TIME, () => { | ||
| scrollViewEl.scrollLeft = tableBodyWrapperEl.scrollLeft | ||
| })) | ||
| // sync scrollViewEl horizontal scroll to tableBodyWrapperEl | ||
| scrollViewEl.addEventListener('scroll', throttle(THROTTLE_TIME, () => { | ||
| tableBodyWrapperEl.scrollLeft = scrollViewEl.scrollLeft | ||
| })) | ||
| } | ||
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| /** | ||
| * Recalculate the viewbox and scrollbar dimensions | ||
| */ | ||
| update() { | ||
| this.scrollbar.update() | ||
| } | ||
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| /** | ||
| * Unbind the events and remove the custom scrollbar elements | ||
| */ | ||
| destroy() { | ||
| this.scrollbar.destroy() | ||
| } | ||
| } |
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