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- <template>
- <view
- class="u-subsection"
- ref="u-subsection"
- :class="[`u-subsection--${mode}`]"
- :style="[$u.addStyle(customStyle), wrapperStyle]"
- >
- <view
- class="u-subsection__bar"
- ref="u-subsection__bar"
- :style="[barStyle]"
- :class="[
- mode === 'button' && 'u-subsection--button__bar',
- current === 0 &&
- mode === 'subsection' &&
- 'u-subsection__bar--first',
- current > 0 &&
- current < list.length - 1 &&
- mode === 'subsection' &&
- 'u-subsection__bar--center',
- current === list.length - 1 &&
- mode === 'subsection' &&
- 'u-subsection__bar--last',
- ]"
- ></view>
- <view
- class="u-subsection__item"
- :class="[
- `u-subsection__item--${index}`,
- index < list.length - 1 &&
- 'u-subsection__item--no-border-right',
- index === 0 && 'u-subsection__item--first',
- index === list.length - 1 && 'u-subsection__item--last',
- ]"
- :ref="`u-subsection__item--${index}`"
- :style="[itemStyle(index)]"
- @tap="clickHandler(index)"
- v-for="(item, index) in list"
- :key="index"
- >
- <text
- class="u-subsection__item__text"
- :style="[textStyle(index)]"
- >{{ getText(item) }}</text
- >
- </view>
- </view>
- </template>
- <script>
- // #ifdef APP-NVUE
- const dom = uni.requireNativePlugin("dom");
- const animation = uni.requireNativePlugin("animation");
- // #endif
- import props from "./props.js";
- /**
- * Subsection 分段器
- * @description 该分段器一般用于用户从几个选项中选择某一个的场景
- * @tutorial https://www.uviewui.com/components/subsection.html
- * @property {Array} list tab的数据
- * @property {String | Number} current 当前活动的tab的index(默认 0 )
- * @property {String} activeColor 激活时的颜色(默认 '#3c9cff' )
- * @property {String} inactiveColor 未激活时的颜色(默认 '#303133' )
- * @property {String} mode 模式选择,mode=button为按钮形式,mode=subsection时为分段模式(默认 'button' )
- * @property {String | Number} fontSize 字体大小,单位px(默认 12 )
- * @property {Boolean} bold 激活选项的字体是否加粗(默认 true )
- * @property {String} bgColor 组件背景颜色,mode为button时有效(默认 '#eeeeef' )
- * @property {Object} customStyle 定义需要用到的外部样式
- * @property {String} keyName 从`list`元素对象中读取的键名(默认 'name' )
- *
- * @event {Function} change 分段器选项发生改变时触发 回调 index:选项的index索引值,从0开始
- * @example <u-subsection :list="list" :current="curNow" @change="sectionChange"></u-subsection>
- */
- export default {
- name: "u-subsection",
- mixins: [uni.$u.mpMixin, uni.$u.mixin, props],
- data() {
- return {
- // 组件尺寸
- itemRect: {
- width: 0,
- height: 0,
- },
- };
- },
- watch: {
- list(newValue, oldValue) {
- this.init();
- },
- current: {
- immediate: true,
- handler(n) {
- // #ifdef APP-NVUE
- // 在安卓nvue上,如果通过translateX进行位移,到最后一个时,会导致右侧无法绘制圆角
- // 故用animation模块进行位移
- const ref = this.$refs?.["u-subsection__bar"]?.ref;
- // 不存在ref的时候(理解为第一次初始化时,需要渲染dom,进行一定延时再获取ref),这里的100ms是经过测试得出的结果(某些安卓需要延时久一点),勿随意修改
- uni.$u.sleep(ref ? 0 : 100).then(() => {
- animation.transition(this.$refs["u-subsection__bar"].ref, {
- styles: {
- transform: `translateX(${
- n * this.itemRect.width
- }px)`,
- transformOrigin: "center center",
- },
- duration: 300,
- });
- });
- // #endif
- },
- },
- },
- computed: {
- wrapperStyle() {
- const style = {};
- // button模式时,设置背景色
- if (this.mode === "button") {
- style.backgroundColor = this.bgColor;
- }
- return style;
- },
- // 滑块的样式
- barStyle() {
- const style = {};
- style.width = `${this.itemRect.width}px`;
- style.height = `${this.itemRect.height}px`;
- // 通过translateX移动滑块,其移动的距离为索引*item的宽度
- // #ifndef APP-NVUE
- style.transform = `translateX(${
- this.current * this.itemRect.width
- }px)`;
- // #endif
- if (this.mode === "subsection") {
- // 在subsection模式下,需要动态设置滑块的圆角,因为移动滑块使用的是translateX,无法通过父元素设置overflow: hidden隐藏滑块的直角
- style.backgroundColor = this.activeColor;
- }
- return style;
- },
- // 分段器item的样式
- itemStyle(index) {
- return (index) => {
- const style = {};
- if (this.mode === "subsection") {
- // 设置border的样式
- style.borderColor = this.activeColor;
- style.borderWidth = "1px";
- style.borderStyle = "solid";
- }
- return style;
- };
- },
- // 分段器文字颜色
- textStyle(index) {
- return (index) => {
- const style = {};
- style.fontWeight =
- this.bold && this.current === index ? "bold" : "normal";
- style.fontSize = uni.$u.addUnit(this.fontSize);
- // subsection模式下,激活时默认为白色的文字
- if (this.mode === "subsection") {
- style.color =
- this.current === index ? "#fff" : this.inactiveColor;
- } else {
- // button模式下,激活时文字颜色默认为activeColor
- style.color =
- this.current === index
- ? this.activeColor
- : this.inactiveColor;
- }
- return style;
- };
- },
- },
- mounted() {
- this.init();
- },
- methods: {
- init() {
- uni.$u.sleep().then(() => this.getRect());
- },
- // 判断展示文本
- getText(item) {
- return typeof item === 'object' ? item[this.keyName] : item
- },
- // 获取组件的尺寸
- getRect() {
- // #ifndef APP-NVUE
- this.$uGetRect(".u-subsection__item--0").then((size) => {
- this.itemRect = size;
- });
- // #endif
- // #ifdef APP-NVUE
- const ref = this.$refs["u-subsection__item--0"][0];
- ref &&
- dom.getComponentRect(ref, (res) => {
- this.itemRect = res.size;
- });
- // #endif
- },
- clickHandler(index) {
- this.$emit("change", index);
- },
- },
- };
- </script>
- <style lang="scss" scoped>
- @import "../../libs/css/components.scss";
- .u-subsection {
- @include flex;
- position: relative;
- overflow: hidden;
- /* #ifndef APP-NVUE */
- width: 100%;
- box-sizing: border-box;
- /* #endif */
- &--button {
- height: 32px;
- background-color: rgb(238, 238, 239);
- padding: 3px;
- border-radius: 3px;
- align-items: stretch;
- &__bar {
- background-color: #ffffff;
- border-radius: 3px !important;
- }
- }
- &--subsection {
- height: 30px;
- }
- &__bar {
- position: absolute;
- /* #ifndef APP-NVUE */
- transition-property: transform, color;
- transition-duration: 0.3s;
- transition-timing-function: ease-in-out;
- /* #endif */
- &--first {
- border-top-left-radius: 3px;
- border-bottom-left-radius: 3px;
- border-top-right-radius: 0px;
- border-bottom-right-radius: 0px;
- }
- &--center {
- border-top-left-radius: 0px;
- border-bottom-left-radius: 0px;
- border-top-right-radius: 0px;
- border-bottom-right-radius: 0px;
- }
- &--last {
- border-top-left-radius: 0px;
- border-bottom-left-radius: 0px;
- border-top-right-radius: 3px;
- border-bottom-right-radius: 3px;
- }
- }
- &__item {
- @include flex;
- flex: 1;
- justify-content: center;
- align-items: center;
- // vue环境下,需要设置相对定位,因为滑块为绝对定位,item需要在滑块的上面
- position: relative;
- &--no-border-right {
- border-right-width: 0 !important;
- }
- &--first {
- border-top-left-radius: 3px;
- border-bottom-left-radius: 3px;
- }
- &--last {
- border-top-right-radius: 3px;
- border-bottom-right-radius: 3px;
- }
- &__text {
- font-size: 12px;
- line-height: 12px;
- @include flex;
- align-items: center;
- transition-property: color;
- transition-duration: 0.3s;
- }
- }
- }
- </style>
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