| <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> |