优化我的列表、下载、歌单、排行榜列表性能
This commit is contained in:
lyswhut
@@ -35,7 +35,7 @@ div(:class="$style.aside")
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dl
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//- dt {{$t('core.aside.my_music')}}
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dd
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router-link(:active-class="$style.active" :tips="$t('core.aside.my_list')" :to="`list?id=${setting.list.prevSelectListId || defaultList.id}`")
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router-link(:active-class="$style.active" to="list" :tips="$t('core.aside.my_list')")
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div(:class="$style.icon")
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svg(version='1.1' xmlns='http://www.w3.org/2000/svg' xlink='http://www.w3.org/1999/xlink' viewBox='0 0 444.87 391.18' space='preserve')
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use(xlink:href='#icon-love')
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@@ -5,7 +5,7 @@
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div.icon(:class="$style.icon")
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svg(version='1.1' xmlns='http://www.w3.org/2000/svg' xlink='http://www.w3.org/1999/xlink' height='100%' viewBox='0 0 451.847 451.847' space='preserve')
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use(xlink:href='#icon-down')
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ul.list.scroll(:class="$style.list" :style="listStyles" ref="dom_list")
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ul.selection-list.scroll(:class="$style.list" :style="listStyles" ref="dom_list")
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li(v-for="item in list" :class="(itemKey ? item[itemKey] : item) == value ? $style.active : null" @click="handleClick(item)" :tips="itemName ? item[itemName] : item") {{itemName ? item[itemName] : item}}
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</template>
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@@ -13,7 +13,31 @@ div(:class="$style.songList")
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th.nobreak(:style="{ width: rowWidth.r5 }") {{$t('material.song_list.time')}}
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th.nobreak(:style="{ width: rowWidth.r6 }") {{$t('material.song_list.action')}}
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div(:class="$style.content")
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div.scroll(v-show="list.length" :class="$style.tbody" ref="dom_scrollContent")
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div(v-if="list.length" :class="$style.content" ref="dom_listContent")
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material-virtualized-list(:list="list" key-name="songmid" ref="list" :item-height="37"
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containerClass="scroll" contentClass="list" @contextmenu.native.capture="handleContextMenu")
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template(#default="{ item, index }")
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div.list-item(@click="handleDoubleClick($event, index)" @contextmenu="handleListItemRigthClick($event, index)"
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:class="[{ selected: selectedIndex == index }, { active: selectdList.includes(item) }]")
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div.list-item-cell.nobreak.center(:style="{ width: rowWidth.r1 }" style="padding-left: 3px; padding-right: 3px;" :class="$style.noSelect" @click.stop) {{index + 1}}
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div.list-item-cell.auto(:style="{ width: rowWidth.r2 }" :tips="item.name + ((item._types.ape || item._types.flac || item._types.wav) ? ` - ${$t('material.song_list.lossless')}` : item._types['320k'] ? ` - ${$t('material.song_list.high_quality')}` : '')")
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span.select {{item.name}}
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span.badge.badge-theme-success(:class="[$style.labelQuality, $style.noSelect]" v-if="item._types.ape || item._types.flac || item._types.wav") {{$t('material.song_list.lossless')}}
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span.badge.badge-theme-info(:class="[$style.labelQuality, $style.noSelect]" v-else-if="item._types['320k']") {{$t('material.song_list.high_quality')}}
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div.list-item-cell(:style="{ width: rowWidth.r3 }")
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span.select {{item.singer}}
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div.list-item-cell(:style="{ width: rowWidth.r4 }")
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span.select {{item.albumName}}
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div.list-item-cell(:style="{ width: rowWidth.r5 }")
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span(:class="[$style.time, $style.noSelect]") {{item.interval || '--/--'}}
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div.list-item-cell(:style="{ width: rowWidth.r6 }" style="padding-left: 0; padding-right: 0;")
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material-list-buttons(:index="index" :class="$style.btns"
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:remove-btn="false" @btn-click="handleListBtnClick"
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:download-btn="assertApiSupport(item.source)")
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template(#footer)
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div(:class="$style.pagination")
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material-pagination(:count="total" :limit="limit" :page="page" @btn-click="handleTogglePage")
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//- div.scroll(v-show="list.length" :class="$style.tbody" ref="dom_scrollContent")
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table
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tbody(@contextmenu.capture="handleContextMenu" ref="dom_tbody")
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tr(v-for='(item, index) in list' :key='item.songmid' @contextmenu="handleListItemRigthClick($event, index)" @click="handleDoubleClick($event, index)")
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@@ -175,7 +199,9 @@ export default {
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isModDown: false,
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},
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lastSelectIndex: 0,
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selectedIndex: -1,
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listMenu: {
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rightClickItemIndex: -1,
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isShowItemMenu: false,
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itemMenuControl: {
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play: true,
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@@ -233,7 +259,7 @@ export default {
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this.handleSelectAllData()
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},
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handleDoubleClick(event, index) {
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if (event.target.classList.contains('select')) return
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if (this.listMenu.rightClickItemIndex > -1) return
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this.handleSelectData(event, index)
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@@ -264,14 +290,8 @@ export default {
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}
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this.selectdList = this.list.slice(lastSelectIndex, clickIndex + 1)
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if (isNeedReverse) this.selectdList.reverse()
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let nodes = this.$refs.dom_tbody.childNodes
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do {
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nodes[lastSelectIndex].classList.add('active')
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lastSelectIndex++
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} while (lastSelectIndex <= clickIndex)
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}
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} else {
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event.currentTarget.classList.add('active')
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this.selectdList.push(this.list[clickIndex])
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this.lastSelectIndex = clickIndex
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}
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@@ -281,10 +301,8 @@ export default {
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let index = this.selectdList.indexOf(item)
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if (index < 0) {
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this.selectdList.push(item)
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event.currentTarget.classList.add('active')
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} else {
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this.selectdList.splice(index, 1)
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event.currentTarget.classList.remove('active')
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}
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} else if (this.selectdList.length) {
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this.removeAllSelect()
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@@ -293,12 +311,6 @@ export default {
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},
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removeAllSelect() {
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this.selectdList = []
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let dom_tbody = this.$refs.dom_tbody
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if (!dom_tbody) return
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let nodes = dom_tbody.querySelectorAll('.active')
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for (const node of nodes) {
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if (node.parentNode == dom_tbody) node.classList.remove('active')
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}
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},
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handleListBtnClick(info) {
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this.emitEvent('listBtnClick', info)
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@@ -306,10 +318,6 @@ export default {
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handleSelectAllData() {
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this.removeAllSelect()
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this.selectdList = [...this.list]
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let nodes = this.$refs.dom_tbody.childNodes
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for (const node of nodes) {
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node.classList.add('active')
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}
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this.$emit('input', [...this.selectdList])
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},
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handleTogglePage(page) {
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@@ -327,12 +335,12 @@ export default {
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handleContextMenu(event) {
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if (!event.target.classList.contains('select')) return
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event.stopImmediatePropagation()
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let classList = this.$refs.dom_scrollContent.classList
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let classList = this.$refs.dom_listContent.classList
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classList.add(this.$style.copying)
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window.requestAnimationFrame(() => {
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let str = window.getSelection().toString()
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classList.remove(this.$style.copying)
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str = str.trim()
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str = str.split(/\n\n/).map(s => s.replace(/\n/g, ' ')).join('\n').trim()
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if (!str.length) return
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clipboardWriteText(str)
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})
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@@ -344,23 +352,27 @@ export default {
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this.listMenu.itemMenuControl.sourceDetail = !!musicSdk[this.list[index].source].getMusicDetailPageUrl
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// this.listMenu.itemMenuControl.play =
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// this.listMenu.itemMenuControl.playLater =
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this.listMenu.itemMenuControl.download =
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this.assertApiSupport(this.list[index].source)
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let dom_selected = this.$refs.dom_tbody.querySelector('tr.selected')
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if (dom_selected) dom_selected.classList.remove('selected')
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this.$refs.dom_tbody.querySelectorAll('tr')[index].classList.add('selected')
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let dom_td = event.target.closest('td')
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this.listMenu.itemMenuControl.download = this.assertApiSupport(this.list[index].source)
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let dom_container = event.target.closest('.' + this.$style.songList)
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const getOffsetValue = (target, x = 0, y = 0) => {
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if (target === dom_container) return { x, y }
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if (!target) return { x: 0, y: 0 }
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x += target.offsetLeft
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y += target.offsetTop
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return getOffsetValue(target.offsetParent, x, y)
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}
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this.listMenu.rightClickItemIndex = index
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this.listMenu.menuLocation.x = dom_td.offsetLeft + event.offsetX
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this.listMenu.menuLocation.y = dom_td.offsetParent.offsetTop + dom_td.offsetTop + event.offsetY - this.$refs.dom_scrollContent.scrollTop
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this.selectedIndex = index
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let { x, y } = getOffsetValue(event.target)
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this.listMenu.menuLocation.x = x + event.offsetX
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this.listMenu.menuLocation.y = y + event.offsetY - this.$refs.list.getScrollTop()
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this.hideListsMenu()
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this.$nextTick(() => {
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this.listMenu.isShowItemMenu = true
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})
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},
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hideListMenu() {
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let dom_selected = this.$refs.dom_tbody && this.$refs.dom_tbody.querySelector('tr.selected')
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if (dom_selected) dom_selected.classList.remove('selected')
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this.selectedIndex = -1
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this.listMenu.isShowItemMenu = false
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this.listMenu.rightClickItemIndex = -1
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},
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@@ -406,24 +418,7 @@ export default {
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flex: auto;
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min-height: 0;
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position: relative;
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}
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.tbody {
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height: 100%;
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overflow-y: auto;
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td {
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font-size: 12px;
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:global(.badge) {
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margin-left: 3px;
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}
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&:first-child {
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// padding-left: 10px;
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font-size: 11px;
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color: @color-theme_2-font-label;
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}
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}
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:global(.badge) {
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opacity: .85;
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}
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&.copying {
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.no-select {
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@@ -431,6 +426,24 @@ export default {
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}
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}
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}
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:global(.list) {
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height: 100%;
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overflow-y: auto;
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:global(.list-item-cell) {
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font-size: 12px !important;
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:global(.badge) {
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margin-left: 3px;
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}
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&:first-child {
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// padding-left: 10px;
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font-size: 11px !important;
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color: @color-theme_2-font-label !important;
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}
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}
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:global(.badge) {
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opacity: .85;
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}
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}
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.pagination {
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text-align: center;
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padding: 15px 0;
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@@ -456,10 +469,10 @@ export default {
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each(@themes, {
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:global(#container.@{value}) {
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.tbody {
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td {
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:global(.list) {
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:global(.list-item-cell) {
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&:first-child {
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color: ~'@{color-@{value}-theme_2-font-label}';
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color: ~'@{color-@{value}-theme_2-font-label}' !important;
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}
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}
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}
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@@ -0,0 +1,241 @@
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<template>
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<component :is="containerEl" :class="containerClass" ref="dom_scrollContainer" style="height: 100%; overflow: auto; position: relative; display: block;">
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<component :is="contentEl" :class="contentClass" :style="contentStyle">
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<div v-for="item in views" :key="item.key" :style="item.style">
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<slot name="default" v-bind="{ item: item.item, index: item.index }" />
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</div>
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</component>
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<slot name="footer" />
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</component>
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</template>
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<script>
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const easeInOutQuad = (t, b, c, d) => {
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t /= d / 2
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if (t < 1) return (c / 2) * t * t + b
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t--
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return (-c / 2) * (t * (t - 2) - 1) + b
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}
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const handleScroll = (element, to, duration = 300, callback = () => {}, onCancel = () => {}) => {
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if (!element) return callback()
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const start = element.scrollTop || element.scrollY || 0
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let cancel = false
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if (to > start) {
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let maxScrollTop = element.scrollHeight - element.clientHeight
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if (to > maxScrollTop) to = maxScrollTop
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} else if (to < start) {
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if (to < 0) to = 0
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} else return callback()
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const change = to - start
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const increment = 10
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if (!change) return callback()
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let currentTime = 0
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let val
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let cancelCallback
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const animateScroll = () => {
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currentTime += increment
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val = parseInt(easeInOutQuad(currentTime, start, change, duration))
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if (element.scrollTo) {
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element.scrollTo(0, val)
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} else {
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element.scrollTop = val
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}
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if (currentTime < duration) {
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if (cancel) {
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cancelCallback()
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onCancel()
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return
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}
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setTimeout(animateScroll, increment)
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} else {
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callback()
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}
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}
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animateScroll()
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return (callback) => {
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cancelCallback = callback
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cancel = true
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}
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}
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export default {
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name: 'VirtualizedList',
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props: {
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containerEl: {
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type: String,
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default: 'div',
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},
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containerClass: {
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type: String,
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default: 'virtualized-list',
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},
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contentEl: {
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type: String,
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default: 'div',
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},
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contentClass: {
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type: String,
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default: 'virtualized-list-content',
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},
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outsideNum: {
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type: Number,
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default: 10,
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},
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itemHeight: {
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type: Number,
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required: true,
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},
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keyName: {
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type: String,
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require: true,
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},
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list: {
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type: Array,
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require: true,
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},
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},
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data() {
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return {
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views: [],
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isWaitingUpdate: false,
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startIndex: -1,
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endIndex: -1,
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scrollTop: 0,
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cachedList: [],
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cancelScroll: null,
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isScrolling: false,
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scrollToValue: 0,
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}
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},
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computed: {
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contentStyle() {
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return {
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display: 'block',
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height: this.list.length * this.itemHeight + 'px',
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}
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},
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},
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watch: {
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itemHeight() {
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this.updateView()
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},
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list() {
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this.cachedList = Array(this.list.length)
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this.startIndex = -1
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this.endIndex = -1
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this.updateView()
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},
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},
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mounted() {
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this.$refs.dom_scrollContainer.addEventListener('scroll', this.onScroll, false)
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this.cachedList = Array(this.list.length)
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this.startIndex = -1
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this.endIndex = -1
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this.updateView()
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},
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beforeDestroy() {
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if (this.cancelScroll) this.cancelScroll()
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},
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methods: {
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onScroll(event) {
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if (this.isWaitingUpdate) return
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this.isWaitingUpdate = true
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window.requestAnimationFrame(() => {
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this.updateView()
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this.isWaitingUpdate = false
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})
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this.$emit('scroll', event)
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},
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createList(startIndex, endIndex) {
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const cache = this.cachedList.slice(startIndex, endIndex)
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const list = this.list.slice(startIndex, endIndex).map((item, i) => {
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if (cache[i]) return cache[i]
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const top = (startIndex + i) * this.itemHeight
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const index = startIndex + i
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return this.cachedList[index] = {
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item,
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top,
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style: { position: 'absolute', left: 0, right: 0, top: top + 'px', height: this.itemHeight + 'px' },
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index,
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key: item[this.keyName],
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}
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})
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return list
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},
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updateView() {
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const currentScrollTop = this.$refs.dom_scrollContainer.scrollTop
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const currentStartIndex = Math.floor(currentScrollTop / this.itemHeight)
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const currentEndIndex = currentStartIndex + Math.ceil(this.$refs.dom_scrollContainer.clientHeight / this.itemHeight)
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const continuous = currentStartIndex <= this.endIndex && currentEndIndex >= this.startIndex
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const currentStartRenderIndex = Math.max(Math.floor(currentScrollTop / this.itemHeight) - this.outsideNum, 0)
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const currentEndRenderIndex = currentStartIndex + Math.ceil(this.$refs.dom_scrollContainer.clientHeight / this.itemHeight) + this.outsideNum
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// console.log(continuous)
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// debugger
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if (continuous) {
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if (Math.abs(currentScrollTop - this.scrollTop) < this.itemHeight * 5) return
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// console.log('update')
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if (currentScrollTop > this.scrollTop) { // scroll down
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// console.log('scroll down')
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const list = this.createList(currentStartRenderIndex, currentEndRenderIndex)
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this.views.push(...list.slice(list.indexOf(this.views[this.views.length - 1]) + 1))
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// if (this.views.length > 100) {
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this.$nextTick(() => {
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this.views.splice(0, this.views.indexOf(list[0]))
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})
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// }
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} else if (currentScrollTop < this.scrollTop) { // scroll up
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// console.log('scroll up')
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this.views = this.createList(currentStartRenderIndex, currentEndRenderIndex)
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} else return
|
||||
} else {
|
||||
this.views = this.createList(currentStartRenderIndex, currentEndRenderIndex)
|
||||
}
|
||||
this.startIndex = currentStartIndex
|
||||
this.endIndex = currentEndIndex
|
||||
this.scrollTop = currentScrollTop
|
||||
},
|
||||
|
||||
scrollTo(scrollTop, animate = false) {
|
||||
return new Promise(resolve => {
|
||||
if (this.cancelScroll) {
|
||||
this.cancelScroll(resolve)
|
||||
} else {
|
||||
resolve()
|
||||
}
|
||||
}).then(() => {
|
||||
return new Promise((resolve, reject) => {
|
||||
if (animate) {
|
||||
this.isScrolling = true
|
||||
this.scrollToValue = scrollTop
|
||||
this.cancelScroll = handleScroll(this.$refs.dom_scrollContainer, scrollTop, 300, () => {
|
||||
this.cancelScroll = null
|
||||
this.isScrolling = false
|
||||
resolve()
|
||||
}, () => {
|
||||
this.cancelScroll = null
|
||||
this.isScrolling = false
|
||||
reject('canceled')
|
||||
})
|
||||
} else {
|
||||
this.$refs.dom_scrollContainer.scrollTop = scrollTop
|
||||
}
|
||||
})
|
||||
})
|
||||
},
|
||||
|
||||
scrollToIndex(index, offset = 0, animate = false, callback = () => {}) {
|
||||
return this.scrollTo(Math.max(index * this.itemHeight + offset, 0), animate, callback)
|
||||
},
|
||||
|
||||
getScrollTop() {
|
||||
return this.isScrolling ? this.scrollToValue : this.$refs.dom_scrollContainer.scrollTop
|
||||
},
|
||||
},
|
||||
}
|
||||
</script>
|
||||
Reference in New Issue
Block a user