vue2之自定义模态框

在我们日常开发中，在很多地方都会用到dialog，特别是在一些后台管理系统中，比如新增数据、编辑数据等等 但是有时候由于业务需求的原因，原有的一些框架，比如element-ui中提供的模态框满足不了当前的业务需求，那么这个时候往往就需要我们自己自定义一个dialog

下面将直接给出我封装的一个dialog demo，用户可以自定义头部区域、内容区域以及底部的工具栏区域

customDialog.vue

<template>
  <div v-if="showDialog">
    <transition name="fade" appear>
      <div class="modal-overlay"></div>
    </transition>
    <transition name="pop" appear>
      <div class="modal" role="dialog" :style="{ width: `${width}px` }">
        <!-- 头部标题区域 -->
        <slot name="title"></slot>
        <div class="model-title" v-if="!$slots.title">
          <div class="title-text">
            <span class="main-title">{{ title }}</span>
            <div class="icon-close" v-if="showClose">
              <i class="el-icon-close main-text" @click="close"></i>
            </div>
          </div>
          <div class="semiel-lipse" v-show="isShowSemielLipse"></div>
        </div>
        <!-- 主体内容区域 -->
        <div class="model-body">
          <slot></slot>
        </div>
        <!-- 操作按钮区域 -->
        <slot name="buttons"></slot>
        <!-- 默认按钮 -->
        <div class="footer_btn" v-if="!$slots.buttons">
          <!-- 确认按钮 -->
          <div class="dis_in_center" v-if="showConfimButton">
            <el-button
              :disabled="disabled"
              :type="confimBtnType"
              :loading="confimBtnLoading"
              :size="size"
              @click="confim"
            >
              {{ confimText }}
            </el-button>
          </div>

          <!-- 取消按钮 -->
          <div
            class="dis_in_center right-btn"
            v-if="showCancelButton"
            :class="{ margin_left_20: showCancelButton }"
          >
            <el-button plain :type="cancelType" :size="size" @click="close">
              {{ cancelText }}
            </el-button>
          </div>
        </div>
      </div>
    </transition>
  </div>
</template>

<script>
export default {
  name: "CustomDialog",
  components: {},
  model: {
    prop: "showDialog",
    event: "change",
  },
  props: {
    // 是否显示头部区域的自定义样式
    isShowSemielLipse: {
      type: Boolean,
      default: false,
    },
    // 弹框的显示隐藏
    showDialog: {
      type: Boolean,
      default: false,
    },
    // 底部按钮大小
    size: {
      type: String,
      default: "medium",
    },
    // 宽度设置
    width: {
      type: [String, Number],
      default: "600",
    },
    // 是否显示右上角的关闭按钮
    showClose: {
      type: Boolean,
      default: true,
    },
    // 弹框标题
    title: {
      type: String,
      default: "标题",
    },
    // 确认按钮
    confimText: {
      type: String,
      default: "保存",
    },
    // 确认按钮loading
    confimBtnLoading: {
      type: Boolean,
      default: false,
    },
    // 是否显示确认按钮
    showConfimButton: {
      type: Boolean,
      default: true,
    },
    // 是否显示取消按钮
    showCancelButton: {
      type: Boolean,
      default: true,
    },
    // 是否禁用确认按钮
    disabled: {
      type: Boolean,
      default: false,
    },
    // 确认按钮类型
    confimBtnType: {
      type: String,
      default: "primary",
    },
    // 取消按钮类型
    cancelType: {
      type: String,
      default: "info",
    },
    // 取消按钮文本
    cancelText: {
      type: String,
      default: "取消",
    },
    // 关闭按钮前的事件处理
    beforeClose: {
      type: Function,
      default: () => {
        return true;
      },
    },
  },
  methods: {
    // 点击了关闭按钮/取消按钮
    close() {
      const data = this.beforeClose();
      if (!data) return;
      this.$emit("change", false);
    },
    // 点击了确认按钮
    confim() {
      this.$emit("confim", false);
    },
  },
};
</script>

<style scoped>
.main-title {
  font-weight: 700;
  color: #111218;
  font-size: 16px;
}

.main-text {
  color: #111218;
}

.modal {
  position: absolute;
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  margin: auto;
  height: fit-content;
  /* box-shadow: 0px 5px 15px 0px rgba(255, 102, 0, 0.3); */
  box-shadow: 0px 5px 15px 0px rgba(255, 255, 255, 0.3);
  min-width: 400px;
  border-radius: 1rem;
  overflow: hidden;
  background: #fff;
  z-index: 999;
  border-radius: 4px;
  transform: none;
}

.model-body {
  padding: 2rem;
  min-height: 2rem;
  max-height: 70vh;
  overflow-y: auto;
}

.model-title {
  position: relative;
  height: 64px;
  text-align: center;
  overflow: hidden;
  line-height: 64px;
  width: 100%;
  color: #fff;
  font-size: 18px;

  /* box-shadow: 0 -4px 12px rgba(0,0,0,.15)!important; */
}

.semiel-lipse {
  position: absolute;
  width: 110%;
  left: -5%;
  height: 150%;
  top: -50%;
  background: rgba(255, 102, 0, 0.8);
  border-radius: 0% 0% 50% 50%;
}

.title-text {
  position: relative;
  z-index: 1000;
}

.icon-close {
  position: absolute;
  right: 42px;
  top: 0;
  line-height: 44px;
}

.icon-close i {
  cursor: pointer;
}

.modal-overlay {
  content: "";
  position: absolute;
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  z-index: 998;
  background: rgba(0, 0, 0, 0.4);
}

.footer_btn {
  text-align: center;
  padding-bottom: 20px;
  padding-top: 20px;
  border-top: 1px solid #f5f5f5;
}

.dis_in_center {
  display: inline-block;
  vertical-align: middle;
}

.right-btn {
  margin-left: 20px;
}

/* 动画 */
.fade-enter-active,
.fade-leave-active {
  transition: opacity 0.4s linear;
}

.fade-enter,
.fade-leave-to {
  opacity: 0;
}

.pop-enter-active,
.pop-leave-active {
  transition: transform 0.4s cubic-bezier(0.5, 0, 0.5, 1), opacity 0.4s linear;
}

.pop-enter,
.pop-leave-to {
  opacity: 0;
  transform: scale(0.3) translateY(-50%);
}
</style>

使用方式：

<template>
    <div>
        <custom-dialog
          v-model="showDialog"
          width="1200"
          confimText="确认"
          cancelType="primary"
          :confimBtnLoading="confimBtnLoading"
          @confim="confirmModel"
          @change="changeModel"
          title="选择部门"
        >
        <!-- 自定义标题 -->
      <template #title>
        <div class="custom-dialog-title">
          <span style="font-size: 30px; font-weight: bold; color: #000000">
            xxxxxx
          </span>
        </div>
        <!-- 自定义内容 -->
        <div>....</div>
        <!-- 自定义按钮 -->
        <template #buttons>
            <div>
              ...
            </div>
        </template>
      </template>
    </custom-dialog>
    </div>
</template>

import customDialog from "../components/CustomDialog.vue";
export default {
    components: {
        customDialog
    }
}

效果：