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368 lines
10 KiB
368 lines
10 KiB
3 years ago
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<template>
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<view
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class="u-tooltip"
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:style="[$u.addStyle(customStyle)]"
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>
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<u-overlay
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:show="showTooltip && tooltipTop !== -10000 && overlay"
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customStyle="backgroundColor: rgba(0, 0, 0, 0)"
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@click="overlayClickHandler"
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></u-overlay>
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<view class="u-tooltip__wrapper">
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<text
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class="u-tooltip__wrapper__text"
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:id="textId"
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:ref="textId"
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:userSelect="false"
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:selectable="false"
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@longpress.stop="longpressHandler"
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:style="{
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backgroundColor: bgColor && showTooltip && tooltipTop !== -10000 ? bgColor : 'transparent'
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}"
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>{{ text }}</text>
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<u-transition
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mode="fade"
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:show="showTooltip"
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duration="300"
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:customStyle="{
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position: 'absolute',
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top: $u.addUnit(tooltipTop),
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zIndex: zIndex,
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...tooltipStyle
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}"
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>
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<view
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class="u-tooltip__wrapper__popup"
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:id="tooltipId"
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:ref="tooltipId"
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>
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<view
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class="u-tooltip__wrapper__popup__indicator"
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hover-class="u-tooltip__wrapper__popup__indicator--hover"
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v-if="showCopy || buttons.length"
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:style="[indicatorStyle, {
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width: $u.addUnit(indicatorWidth),
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height: $u.addUnit(indicatorWidth),
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}]"
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>
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<!-- 由于nvue不支持三角形绘制，这里就做一个四方形，再旋转45deg，得到露出的一个三角 -->
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</view>
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<view class="u-tooltip__wrapper__popup__list">
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<view
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v-if="showCopy"
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class="u-tooltip__wrapper__popup__list__btn"
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hover-class="u-tooltip__wrapper__popup__list__btn--hover"
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@tap="setClipboardData"
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>
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<text
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class="u-tooltip__wrapper__popup__list__btn__text"
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>复制</text>
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</view>
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<u-line
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direction="column"
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color="#8d8e90"
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v-if="showCopy && buttons.length > 0"
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length="18"
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></u-line>
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<template v-for="(item , index) in buttons">
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<view
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class="u-tooltip__wrapper__popup__list__btn"
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hover-class="u-tooltip__wrapper__popup__list__btn--hover"
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:key="index"
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>
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<text
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class="u-tooltip__wrapper__popup__list__btn__text"
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@tap="btnClickHandler(index)"
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>{{ item }}</text>
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</view>
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<u-line
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direction="column"
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color="#8d8e90"
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v-if="index < buttons.length - 1"
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length="18"
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:key="index"
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></u-line>
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</template>
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</view>
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</view>
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</u-transition>
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</view>
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</view>
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</template>
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<script>
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import props from './props.js';
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// #ifdef APP-NVUE
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const dom = uni.requireNativePlugin('dom')
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// #endif
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// #ifdef H5
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import ClipboardJS from "./clipboard.min.js"
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// #endif
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/**
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* Tooltip
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* @description
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* @tutorial https://www.uviewui.com/components/tooltip.html
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* @property {String | Number} text 需要显示的提示文字
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* @property {String | Number} copyText 点击复制按钮时，复制的文本，为空则使用text值
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* @property {String | Number} size 文本大小（默认 14 ）
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* @property {String} color 字体颜色（默认 '#606266' ）
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* @property {String} bgColor 弹出提示框时，文本的背景色（默认 'transparent' ）
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* @property {String} direction 弹出提示的方向，top-上方，bottom-下方（默认 'top' ）
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* @property {String | Number} zIndex 弹出提示的z-index，nvue无效（默认 10071 ）
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* @property {Boolean} showCopy 是否显示复制按钮（默认 true ）
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* @property {Array} buttons 扩展的按钮组
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* @property {Boolean} overlay 是否显示透明遮罩以防止触摸穿透（默认 true ）
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* @property {Object} customStyle 定义需要用到的外部样式
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*
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* @event {Function}
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* @example
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*/
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export default {
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name: 'u-tooltip',
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mixins: [uni.$u.mpMixin, uni.$u.mixin, props],
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data() {
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return {
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// 是否展示气泡
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showTooltip: true,
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// 生成唯一id，防止一个页面多个组件，造成干扰
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textId: uni.$u.guid(),
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tooltipId: uni.$u.guid(),
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// 初始时甚至为很大的值，让其移到屏幕外面，为了计算元素的尺寸
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tooltipTop: -10000,
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// 气泡的位置信息
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tooltipInfo: {
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width: 0,
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left: 0
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},
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// 文本的位置信息
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textInfo: {
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width: 0,
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left: 0
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},
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// 三角形指示器的样式
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indicatorStyle: {},
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// 气泡在可能超出屏幕边沿范围时，重新定位后，距离屏幕边沿的距离
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screenGap: 12,
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// 三角形指示器的宽高，由于对元素进行了角度旋转，精确计算指示器位置时，需要用到其尺寸信息
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indicatorWidth: 14,
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}
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},
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watch: {
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propsChange() {
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this.getElRect()
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}
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},
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computed: {
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// 特别处理H5的复制，因为H5浏览器是自带系统复制功能的，在H5环境
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// 当一些依赖参数变化时，需要重新计算气泡和指示器的位置信息
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propsChange() {
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return [this.text, this.buttons]
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},
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// 计算气泡和指示器的位置信息
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tooltipStyle() {
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const style = {
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transform: `translateY(${this.direction === 'top' ? '-100%' : '100%'})`,
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},
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sys = uni.$u.sys(),
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getPx = uni.$u.getPx,
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addUnit = uni.$u.addUnit
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if (this.tooltipInfo.width / 2 > this.textInfo.left + this.textInfo.width / 2 - this.screenGap) {
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this.indicatorStyle = {}
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style.left = `-${addUnit(this.textInfo.left - this.screenGap)}`
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this.indicatorStyle.left = addUnit(this.textInfo.width / 2 - getPx(style.left) - this.indicatorWidth /
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2)
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} else if (this.tooltipInfo.width / 2 > sys.windowWidth - this.textInfo.right + this.textInfo.width / 2 -
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this.screenGap) {
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this.indicatorStyle = {}
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style.right = `-${addUnit(sys.windowWidth - this.textInfo.right - this.screenGap)}`
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this.indicatorStyle.right = addUnit(this.textInfo.width / 2 - getPx(style.right) - this
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.indicatorWidth / 2)
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} else {
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const left = Math.abs(this.textInfo.width / 2 - this.tooltipInfo.width / 2)
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style.left = this.textInfo.width > this.tooltipInfo.width ? addUnit(left) : -addUnit(left)
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this.indicatorStyle = {}
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}
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if (this.direction === 'top') {
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style.marginTop = '-10px'
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this.indicatorStyle.bottom = '-4px'
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} else {
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style.marginBottom = '-10px'
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this.indicatorStyle.top = '-4px'
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}
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return style
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}
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},
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mounted() {
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this.init()
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},
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methods: {
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init() {
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this.getElRect()
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},
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// 长按触发事件
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async longpressHandler() {
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this.tooltipTop = 0
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this.showTooltip = true
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},
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// 点击透明遮罩
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overlayClickHandler() {
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this.showTooltip = false
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},
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// 点击弹出按钮
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btnClickHandler(index) {
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this.showTooltip = false
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// 如果需要展示复制按钮，此处index需要加1，因为复制按钮在第一个位置
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this.$emit('click', this.showCopy ? index + 1 : index)
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},
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// 查询内容高度
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queryRect(ref) {
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// #ifndef APP-NVUE
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// $uGetRect为uView自带的节点查询简化方法，详见文档介绍：https://www.uviewui.com/js/getRect.html
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// 组件内部一般用this.$uGetRect，对外的为this.$u.getRect，二者功能一致，名称不同
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return new Promise(resolve => {
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this.$uGetRect(`#${ref}`).then(size => {
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resolve(size)
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})
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})
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// #endif
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// #ifdef APP-NVUE
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// nvue下，使用dom模块查询元素高度
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// 返回一个promise，让调用此方法的主体能使用then回调
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return new Promise(resolve => {
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dom.getComponentRect(this.$refs[ref], res => {
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resolve(res.size)
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})
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})
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// #endif
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},
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// 元素尺寸
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getElRect() {
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// 调用之前，先将指示器调整到屏幕外，方便获取尺寸
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this.showTooltip = true
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this.tooltipTop = -10000
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uni.$u.sleep(500).then(() => {
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this.queryRect(this.tooltipId).then(size => {
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this.tooltipInfo = size
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// 获取气泡尺寸之后，将其隐藏，为了让下次切换气泡显示与隐藏时，有淡入淡出的效果
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this.showTooltip = false
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})
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this.queryRect(this.textId).then(size => {
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this.textInfo = size
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})
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})
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},
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// 复制文本到粘贴板
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setClipboardData() {
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// 关闭组件
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this.showTooltip = false
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this.$emit('click', 0)
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// #ifndef H5
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uni.setClipboardData({
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// 优先使用copyText字段，如果没有，则默认使用text字段当做复制的内容
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data: this.copyText || this.text,
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success: () => {
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this.showToast && uni.$u.toast('复制成功')
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},
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fail: () => {
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this.showToast && uni.$u.toast('复制失败')
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},
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complete: () => {
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this.showTooltip = false
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}
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})
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// #endif
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// #ifdef H5
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let event = window.event || e || {}
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let clipboard = new ClipboardJS('', {
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text: () => this.copyText || this.text
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})
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clipboard.on('success', (e) => {
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this.showToast && uni.$u.toast('复制成功')
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clipboard.off('success')
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clipboard.off('error')
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// 在单页应用中，需要销毁DOM的监听
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clipboard.destroy()
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})
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clipboard.on('error', (e) => {
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this.showToast && uni.$u.toast('复制失败')
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clipboard.off('success')
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clipboard.off('error')
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// 在单页应用中，需要销毁DOM的监听
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clipboard.destroy()
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})
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clipboard.onClick(event)
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// #endif
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}
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}
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}
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</script>
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<style lang="scss">
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@import "../../libs/css/components.scss";
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.u-tooltip {
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position: relative;
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@include flex;
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&__wrapper {
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@include flex;
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justify-content: center;
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/* #ifndef APP-NVUE */
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white-space: nowrap;
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/* #endif */
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&__text {
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color: $u-content-color;
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font-size: 14px;
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}
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&__popup {
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@include flex;
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justify-content: center;
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&__list {
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background-color: #060607;
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position: relative;
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flex: 1;
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border-radius: 5px;
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padding: 0px 0;
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@include flex(row);
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align-items: center;
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overflow: hidden;
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&__btn {
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padding: 11px 13px;
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&--hover {
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background-color: #58595B;
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}
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&__text {
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line-height: 12px;
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font-size: 13px;
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color: #FFFFFF;
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}
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}
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}
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&__indicator {
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position: absolute;
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background-color: #060607;
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width: 14px;
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height: 14px;
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bottom: -4px;
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transform: rotate(45deg);
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border-radius: 2px;
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z-index: -1;
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|
|
||
|
|
&--hover {
|
||
|
|
background-color: #58595B;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
</style>
|