Vue3+ts实现简单版本modal

Vue3+ts实现简单版本modal

项目中要求做一个询问弹框，有点类似ant-design-vue中的modal通过API调用的那种效果。虽然使用的ui库arco-design-vue中的modal也能满足我的需求，但是我懒得改样式，索性自己写一个阉割版的好了。
实现的这个modal只支持通过API来进行调用

结构组件

<template>
  <div v-if="mask && visible" class="mask"></div>
  <div class="container">
    <div v-if="visible" class="confirm">
      <span class="close" @click="cancel">
        <IconClose />
      </span>
      <div ref="moveEl" :class="{ head: true, move: draggable }">
        <!-- 这里可以换成自己需要的图标或者图片 -->
        <img :src="url" alt="" />
        <span class="title">{{ title }}</span>
      </div>
      <div class="msg">{{ content }}</div>
      <div class="footer">
        <button class="cancel" @click="cancel">取消</button>
        <button class="sure" @click="ok">确认</button>
      </div>
    </div>
  </div>
</template>
<script lang="ts" setup>
  import { ref, onMounted, watch } from 'vue';
  import { IconClose } from '@arco-design/web-vue/es/icon';
  import url from '@/assets/icons/confirm-icon.png';

  const emits = defineEmits(['ok', 'cancel']);
  const moveEl = ref<HTMLElement | null>(null);
  const props = defineProps({
    visible: Boolean, // 是否展示弹框
    title: String,  // 标题
    content: String,  // 内容
    mask: Boolean,  // 是否展示蒙层
    draggable: Boolean, // 是否可拖拽
  });

  function ok() {
    emits('ok');
  }

  function cancel() {
    emits('cancel');
  }

  onMounted(() => {
    let dx = 0;
    let dy = 0;
    let sx = 0;
    let sy = 0;
    let box: HTMLElement | null = null;
    function move(ev: MouseEvent) {
      if (box) {
        let left = ev.clientX - (dx - sx);
        let top = ev.clientY - (dy - sy);
        if (left <= 0) left = 0;
        if (top <= 0) top = 0;
        if (left >= window.innerWidth - box.clientWidth) left = window.innerWidth - box.clientWidth;
        if (top >= window.innerHeight - box.clientHeight)
          top = window.innerHeight - box.clientHeight;
        box.setAttribute('style', `left:${left}px; top:${top}px;transform:none`);
      }
    }

    function moveStart(ev: MouseEvent) {
      dx = ev.clientX;
      dy = ev.clientY;
      const cssObj = box?.getBoundingClientRect();
      sx = cssObj?.left as number;
      sy = cssObj?.top as number;
      document.addEventListener('mousemove', move, false);
    }
    if (props.draggable) {
      if (moveEl.value) {
        box = moveEl.value.parentElement as HTMLElement;
        box.addEventListener('mousedown', moveStart, false);
      }
      document.addEventListener('mouseup', function () {
        if (moveEl.value) {
          document.removeEventListener('mousemove', move, false);
        }
      });
    }
  });
</script>
<style lang="less" scoped>
  .mask {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
  }

  .container {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
  }

  .confirm {
    position: absolute;
    top: 30%;
    left: 50%;
    transform: translate(-50%, 0);
    width: 427px;
    height: 151px;
    background-color: var(--color-bg-3);
    box-shadow: 0px 4px 10px 0px rgba(0, 0, 0, 0.1);
    border: 1px solid var(--color-neutral-3);
    .close {
      position: absolute;
      width: 20px;
      height: 20px;
      border-radius: 50%;
      display: flex;
      justify-content: center;
      align-items: center;
      top: 12px;
      right: 16px;
      cursor: pointer;
      font-size: 12px;
      color: var(--color-text-1);
      transition: background-color 0.3s;
      &:hover {
        background-color: var(--color-fill-2);
        transition: background-color 0.3s;
      }
    }
  }
  .confirm[theme='dark'] {
    box-shadow: 0px 0px 10px 0px rgba(0, 0, 0, 0.4);
  }

  .head {
    display: flex;
    align-items: center;
    padding: 19px 23px 12px;
    width: 100%;
    font-size: 26px;
    color: rgb(255, 125, 0);

    .title {
      margin-left: 13px;
      font-size: 16px;
      font-weight: 500;
      color: var(--color-text-1);
      line-height: 32px;
    }
  }
  .move {
    cursor: move;
  }
  .msg {
    margin-left: 60px;
    margin-bottom: 23px;
    height: 19px;
    font-size: 14px;
    font-weight: 400;
    color: var(--color-text-1);
    line-height: 19px;
  }

  .footer {
    display: flex;
    justify-content: flex-end;
    padding-right: 16px;
    button {
      border: none;
      width: 85px;
      height: 31px;
      background-color: var(--color-secondary);
      border-radius: 4px;
      margin-left: 12px;
      color: var(--color-text-1);
      cursor: pointer;
    }
    .sure {
      color: #ffffff;
      background-color: rgb(var(--primary-6));
      transition: background-color 0.3s;
      &:hover {
        background-color: rgb(var(--primary-5));
        transition: background-color 0.3s;
      }
    }
  }
</style>
<style scoped></style>

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API封装代码

import { createVNode, render } from 'vue';
import _Confirm from './confirm.vue';

interface ConfigType {
  title: string;  // 标题
  content: string;  // 内容
  mask?: boolean;  // 蒙层
  draggable?: boolean;  // 是否可拖拽
  onOk?: () => void; // 确认回调
  onCancel?: () => void; // 取消回调
}

// 判断是不是函数类型
function isFunction(arg: any): boolean {
  return typeof arg === 'function';
}

function open(config: ConfigType) {
  let container: HTMLElement | null = document.querySelector('.confirm-modal');
  if (!container) {
    container = document.createElement('div');
    container.className = 'confirm-modal';
    container.setAttribute(
      'style',
      `position: fixed;top: 0;left: 0;right: 0;bottom: 0;z-index: 1001;display:block`,
    );
  } else {
    container.style.zIndex = '1001';
    container.style.display = 'block';
  }
  
  // 销毁组件、移除container
  function hide() {
    // eslint-disable-next-line no-use-before-define
    if (vm.component) {
      // eslint-disable-next-line no-use-before-define
      vm.component.props.visible = false;
      if (container) {
        container.style.zIndex = '0';
        container.style.display = 'none';
      }
    }
    if (container) {
      render(null, container);
      document.body.removeChild(container);
    }
    container = null;
  }

  const handleOk = () => {
    if (config.onOk && isFunction(config.onOk)) {
      config?.onOk();
    }
    hide();
  };

  const handleCancel = () => {
    if (config.onCancel && isFunction(config.onCancel)) {
      config.onCancel();
    }
    hide();
  };

  const defaultConfig = {
    visible: true,
    mask: false,
    draggable: true,
  };

  const vm = createVNode(_Confirm, {
    ...defaultConfig,
    ...config,
    onOk: handleOk,
    onCancel: handleCancel,
  });

  render(vm, container);
  if (vm.component) {
    vm.component.props.visible = true;
  }
  if (!document.querySelector('.my-confirm')) {
    document.body.appendChild(container);
  }
}
export default {
  open,
};

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封装得不是很好。大家轻点喷哈