quanyawei
2024-01-08 659d09ec24dab6c451220c8f3bb3943b0fdb3ba1
uni_modules/uview-ui/components/u-notify/u-notify.vue
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<template>
   <u-transition
      mode="slide-down"
      :customStyle="containerStyle"
      :show="open"
   >
      <view
         class="u-notify"
         :class="[`u-notify--${tmpConfig.type}`]"
         :style="[backgroundColor, $u.addStyle(customStyle)]"
      >
         <u-status-bar v-if="tmpConfig.safeAreaInsetTop"></u-status-bar>
         <view class="u-notify__warpper">
            <slot name="icon">
               <u-icon
                  v-if="['success', 'warning', 'error'].includes(tmpConfig.type)"
                  :name="tmpConfig.icon"
                  :color="tmpConfig.color"
                  :size="1.3 * tmpConfig.fontSize"
                  :customStyle="{marginRight: '4px'}"
               ></u-icon>
            </slot>
            <text
               class="u-notify__warpper__text"
               :style="{
                  fontSize: $u.addUnit(tmpConfig.fontSize),
                  color: tmpConfig.color
               }"
            >{{ tmpConfig.message }}</text>
         </view>
      </view>
   </u-transition>
</template>
<script>
   import props from './props.js';
   /**
    * notify 顶部提示
    * @description 该组件一般用于页面顶部向下滑出一个提示,尔后自动收起的场景
    * @tutorial
    * @property {String | Number}   top               到顶部的距离 ( 默认 0 )
    * @property {String}         type            主题,primary,success,warning,error ( 默认 'primary' )
    * @property {String}         color            字体颜色 ( 默认 '#ffffff' )
    * @property {String}         bgColor            背景颜色
    * @property {String}         message            展示的文字内容
    * @property {String | Number}   duration         展示时长,为0时不消失,单位ms ( 默认 3000 )
    * @property {String | Number}   fontSize         字体大小 ( 默认 15 )
    * @property {Boolean}         safeAreaInsetTop   是否留出顶部安全距离(状态栏高度) ( 默认 false )
    * @property {Object}         customStyle         组件的样式,对象形式
    * @event {Function}   open   开启组件时调用的函数
    * @event {Function}   close   关闭组件式调用的函数
    * @example <u-notify message="Hi uView"></u-notify>
    */
   export default {
      name: 'u-notify',
      mixins: [uni.$u.mpMixin, uni.$u.mixin,props],
      data() {
         return {
            // 是否展示组件
            open: false,
            timer: null,
            config: {
               // 到顶部的距离
               top: uni.$u.props.notify.top,
               // type主题,primary,success,warning,error
               type: uni.$u.props.notify.type,
               // 字体颜色
               color: uni.$u.props.notify.color,
               // 背景颜色
               bgColor: uni.$u.props.notify.bgColor,
               // 展示的文字内容
               message: uni.$u.props.notify.message,
               // 展示时长,为0时不消失,单位ms
               duration: uni.$u.props.notify.duration,
               // 字体大小
               fontSize: uni.$u.props.notify.fontSize,
               // 是否留出顶部安全距离(状态栏高度)
               safeAreaInsetTop: uni.$u.props.notify.safeAreaInsetTop
            },
            // 合并后的配置,避免多次调用组件后,可能会复用之前使用的配置参数
            tmpConfig: {}
         }
      },
      computed: {
         containerStyle() {
            let top = 0
            if (this.tmpConfig.top === 0) {
               // #ifdef H5
               // H5端,导航栏为普通元素,需要将组件移动到导航栏的下边沿
               // H5的导航栏高度为44px
               top = 44
               // #endif
            }
            const style = {
               top: uni.$u.addUnit(this.tmpConfig.top === 0 ? top : this.tmpConfig.top),
               // 因为组件底层为u-transition组件,必须将其设置为fixed定位
               // 让其出现在导航栏底部
               position: 'fixed',
               left: 0,
               right: 0,
               zIndex: 10076
            }
            return style
         },
         // 组件背景颜色
         backgroundColor() {
            const style = {}
            if (this.tmpConfig.bgColor) {
               style.backgroundColor = this.tmpConfig.bgColor
            }
            return style
         },
         // 默认主题下的图标
         icon() {
            let icon
            if (this.tmpConfig.type === 'success') {
               icon = 'checkmark-circle'
            } else if (this.tmpConfig.type === 'error') {
               icon = 'close-circle'
            } else if (this.tmpConfig.type === 'warning') {
               icon = 'error-circle'
            }
            return icon
         }
      },
      created() {
         // 通过主题的形式调用toast,批量生成方法函数
         ['primary', 'success', 'error', 'warning'].map(item => {
            this[item] = message => this.show({
               type: item,
               message
            })
         })
      },
      methods: {
         show(options) {
            // 不将结果合并到this.config变量,避免多次调用u-toast,前后的配置造成混乱
            this.tmpConfig = uni.$u.deepMerge(this.config, options)
            // 任何定时器初始化之前,都要执行清除操作,否则可能会造成混乱
            this.clearTimer()
            this.open = true
            if (this.tmpConfig.duration > 0) {
               this.timer = setTimeout(() => {
                  this.open = false
                  // 倒计时结束,清除定时器,隐藏toast组件
                  this.clearTimer()
                  // 判断是否存在callback方法,如果存在就执行
                  typeof(this.tmpConfig.complete) === 'function' && this.tmpConfig.complete()
               }, this.tmpConfig.duration)
            }
         },
         // 关闭notify
         close() {
            this.clearTimer()
         },
         clearTimer() {
            this.open = false
            // 清除定时器
            clearTimeout(this.timer)
            this.timer = null
         }
      },
      beforeDestroy() {
         this.clearTimer()
      }
   }
</script>
<style lang="scss" scoped>
   @import "../../libs/css/components.scss";
   $u-notify-padding: 8px 10px !default;
   $u-notify-text-font-size: 15px !default;
   $u-notify-primary-bgColor: $u-primary !default;
   $u-notify-success-bgColor: $u-success !default;
   $u-notify-error-bgColor: $u-error !default;
   $u-notify-warning-bgColor: $u-warning !default;
   .u-notify {
      padding: $u-notify-padding;
      &__warpper {
         @include flex;
         align-items: center;
         text-align: center;
         justify-content: center;
         &__text {
            font-size: $u-notify-text-font-size;
            text-align: center;
         }
      }
      &--primary {
         background-color: $u-notify-primary-bgColor;
      }
      &--success {
         background-color: $u-notify-success-bgColor;
      }
      &--error {
         background-color: $u-notify-error-bgColor;
      }
      &--warning {
         background-color: $u-notify-warning-bgColor;
      }
   }
</style>