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			310 lines
		
	
	
		
			10 KiB
		
	
	
	
		
			Markdown
		
	
	
			
		
		
	
	
			310 lines
		
	
	
		
			10 KiB
		
	
	
	
		
			Markdown
		
	
	
| <script>
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|   module.exports = {
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|     data() {
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|       return {
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|         gridData: [{
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|           date: '2016-05-02',
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|           name: '王小虎',
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|           address: '上海市普陀区金沙江路 1518 弄'
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|         }, {
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|           date: '2016-05-04',
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|           name: '王小虎',
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|           address: '上海市普陀区金沙江路 1518 弄'
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|         }, {
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|           date: '2016-05-01',
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|           name: '王小虎',
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|           address: '上海市普陀区金沙江路 1518 弄'
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|         }, {
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|           date: '2016-05-03',
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|           name: '王小虎',
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|           address: '上海市普陀区金沙江路 1518 弄'
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|         }],
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|         dialogVisible: false,
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|         dialogTableVisible: false,
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|         dialogFormVisible: false,
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|         outerVisible: false,
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|         innerVisible: false,
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|         centerDialogVisible: false,
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|         form: {
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|           name: '',
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|           region: '',
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|           date1: '',
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|           date2: '',
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|           delivery: false,
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|           type: [],
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|           resource: '',
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|           desc: ''
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|         },
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|         formLabelWidth: '80px'
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|       };
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|     },
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|     methods: {
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|       handleClose(done) {
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|         this.$confirm('确认关闭?')
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|           .then(_ => {
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|             done();
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|           })
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|           .catch(_ => {});
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|       }
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|     }
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|   };
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| </script>
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| 
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| <style>
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|   .demo-box.demo-dialog {
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|     .dialog-footer button:first-child {
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|       margin-right: 10px;
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|     }
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|     .full-image {
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|       width: 100%;
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|     }
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|     .el-dialog__wrapper {
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|       margin: 0;
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|     }
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|     .el-select {
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|       width: 300px;
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|     }
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|     .el-input {
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|       width: 300px;
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|     }
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|     .el-button--text {
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|       margin-right: 15px;
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|     }
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|   }
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| </style>
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| ## Dialog 对话框
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| 在保留当前页面状态的情况下,告知用户并承载相关操作。
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| 
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| ### 基本用法
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| 
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| Dialog 弹出一个对话框,适合需要定制性更大的场景。
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| 
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| :::demo 需要设置`visible`属性,它接收`Boolean`,当为`true`时显示 Dialog。Dialog 分为两个部分:`body`和`footer`,`footer`需要具名为`footer`的`slot`。`title`属性用于定义标题,它是可选的,默认值为空。最后,本例还展示了`before-close`的用法。
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| 
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| ```html
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| <el-button type="text" @click="dialogVisible = true">点击打开 Dialog</el-button>
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| 
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| <el-dialog
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|   title="提示"
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|   :visible.sync="dialogVisible"
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|   width="30%"
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|   :before-close="handleClose">
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|   <span>这是一段信息</span>
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|   <span slot="footer" class="dialog-footer">
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|     <el-button @click="dialogVisible = false">取 消</el-button>
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|     <el-button type="primary" @click="dialogVisible = false">确 定</el-button>
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|   </span>
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| </el-dialog>
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| 
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| <script>
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|   export default {
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|     data() {
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|       return {
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|         dialogVisible: false
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|       };
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|     },
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|     methods: {
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|       handleClose(done) {
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|         this.$confirm('确认关闭?')
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|           .then(_ => {
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|             done();
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|           })
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|           .catch(_ => {});
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|       }
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|     }
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|   };
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| </script>
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| ```
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| :::
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| 
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| :::tip
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| `before-close` 仅当用户通过点击关闭图标或遮罩关闭 Dialog 时起效。如果你在 `footer` 具名 slot 里添加了用于关闭 Dialog 的按钮,那么可以在按钮的点击回调函数里加入 `before-close` 的相关逻辑。
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| :::
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| 
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| ### 自定义内容
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| 
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| Dialog 组件的内容可以是任意的,甚至可以是表格或表单,下面是应用了 Element Table 和 Form 组件的两个样例。
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| 
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| :::demo
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| ```html
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| <!-- Table -->
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| <el-button type="text" @click="dialogTableVisible = true">打开嵌套表格的 Dialog</el-button>
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| 
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| <el-dialog title="收货地址" :visible.sync="dialogTableVisible">
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|   <el-table :data="gridData">
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|     <el-table-column property="date" label="日期" width="150"></el-table-column>
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|     <el-table-column property="name" label="姓名" width="200"></el-table-column>
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|     <el-table-column property="address" label="地址"></el-table-column>
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|   </el-table>
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| </el-dialog>
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| 
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| <!-- Form -->
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| <el-button type="text" @click="dialogFormVisible = true">打开嵌套表单的 Dialog</el-button>
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| 
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| <el-dialog title="收货地址" :visible.sync="dialogFormVisible">
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|   <el-form :model="form">
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|     <el-form-item label="活动名称" :label-width="formLabelWidth">
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|       <el-input v-model="form.name" auto-complete="off"></el-input>
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|     </el-form-item>
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|     <el-form-item label="活动区域" :label-width="formLabelWidth">
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|       <el-select v-model="form.region" placeholder="请选择活动区域">
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|         <el-option label="区域一" value="shanghai"></el-option>
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|         <el-option label="区域二" value="beijing"></el-option>
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|       </el-select>
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|     </el-form-item>
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|   </el-form>
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|   <div slot="footer" class="dialog-footer">
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|     <el-button @click="dialogFormVisible = false">取 消</el-button>
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|     <el-button type="primary" @click="dialogFormVisible = false">确 定</el-button>
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|   </div>
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| </el-dialog>
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| 
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| <script>
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|   export default {
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|     data() {
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|       return {
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|         gridData: [{
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|           date: '2016-05-02',
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|           name: '王小虎',
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|           address: '上海市普陀区金沙江路 1518 弄'
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|         }, {
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|           date: '2016-05-04',
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|           name: '王小虎',
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|           address: '上海市普陀区金沙江路 1518 弄'
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|         }, {
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|           date: '2016-05-01',
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|           name: '王小虎',
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|           address: '上海市普陀区金沙江路 1518 弄'
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|         }, {
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|           date: '2016-05-03',
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|           name: '王小虎',
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|           address: '上海市普陀区金沙江路 1518 弄'
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|         }],
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|         dialogTableVisible: false,
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|         dialogFormVisible: false,
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|         form: {
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|           name: '',
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|           region: '',
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|           date1: '',
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|           date2: '',
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|           delivery: false,
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|           type: [],
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|           resource: '',
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|           desc: ''
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|         },
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|         formLabelWidth: '120px'
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|       };
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|     }
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|   };
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| </script>
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| ```
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| :::
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| 
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| ### 嵌套的 Dialog
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| 如果需要在一个 Dialog 内部嵌套另一个 Dialog,需要使用 `append-to-body` 属性。
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| :::demo 正常情况下,我们不建议使用嵌套的 Dialog,如果需要在页面上同时显示多个 Dialog,可以将它们平级放置。对于确实需要嵌套 Dialog 的场景,我们提供了`append-to-body`属性。将内层 Dialog 的该属性设置为 true,它就会插入至 body 元素上,从而保证内外层 Dialog 和遮罩层级关系的正确。
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| ```html
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| <template>
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|   <el-button type="text" @click="outerVisible = true">点击打开外层 Dialog</el-button>
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|   
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|   <el-dialog title="外层 Dialog" :visible.sync="outerVisible">
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|     <el-dialog
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|       width="30%"
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|       title="内层 Dialog"
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|       :visible.sync="innerVisible"
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|       append-to-body>
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|     </el-dialog>
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|     <div slot="footer" class="dialog-footer">
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|       <el-button @click="outerVisible = false">取 消</el-button>
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|       <el-button type="primary" @click="innerVisible = true">打开内层 Dialog</el-button>
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|     </div>
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|   </el-dialog>
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| </template>
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| 
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| <script>
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|   export default {
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|     data() {
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|       return {
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|         outerVisible: false,
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|         innerVisible: false
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|       };
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|     }
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|   }
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| </script>
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| ```
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| :::
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| 
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| ### 居中布局
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| 
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| 标题和底部可水平居中
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| 
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| :::demo 将`center`设置为`true`即可使标题和底部居中。`center`仅影响标题和底部区域。Dialog 的内容是任意的,在一些情况下,内容并不适合居中布局。如果需要内容也水平居中,请自行为其添加 CSS。
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| 
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| ```html
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| <el-button type="text" @click="centerDialogVisible = true">点击打开 Dialog</el-button>
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| 
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| <el-dialog
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|   title="提示"
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|   :visible.sync="centerDialogVisible"
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|   width="30%"
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|   center>
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|   <span>需要注意的是内容是默认不居中的</span>
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|   <span slot="footer" class="dialog-footer">
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|     <el-button @click="centerDialogVisible = false">取 消</el-button>
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|     <el-button type="primary" @click="centerDialogVisible = false">确 定</el-button>
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|   </span>
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| </el-dialog>
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| 
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| <script>
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|   export default {
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|     data() {
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|       return {
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|         centerDialogVisible: false
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|       };
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|     }
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|   };
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| </script>
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| ```
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| :::
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| 
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| :::tip
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| Dialog 的内容是懒渲染的,即在第一次被打开之前,传入的默认 slot 不会被渲染到 DOM 上。因此,如果需要执行 DOM 操作,或通过 `ref` 获取相应组件,请在 `open` 事件回调中进行。
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| :::
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| 
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| :::tip
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| 如果 `visible` 属性绑定的变量位于 Vuex 的 store 内,那么 `.sync` 不会正常工作。此时需要去除 `.sync` 修饰符,同时监听 Dialog 的 `open` 和 `close` 事件,在事件回调中执行 Vuex 中对应的 mutation 更新 `visible` 属性绑定的变量的值。
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| :::
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| 
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| ### Attributes
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| | 参数      | 说明          | 类型      | 可选值                           | 默认值  |
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| |---------- |-------------- |---------- |--------------------------------  |-------- |
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| | visible   | 是否显示 Dialog,支持 .sync 修饰符 | boolean | — | false |
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| | title     | Dialog 的标题,也可通过具名 slot (见下表)传入 | string    | — | — |
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| | width     | Dialog 的宽度 | string    | — | 50% |
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| | fullscreen     | 是否为全屏 Dialog | boolean    | — | false |
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| | top       | Dialog CSS 中的 margin-top 值 | string | — | 15vh |
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| | modal     | 是否需要遮罩层   | boolean   | — | true |
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| | modal-append-to-body     | 遮罩层是否插入至 body 元素上,若为 false,则遮罩层会插入至 Dialog 的父元素上   | boolean   | — | true |
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| | append-to-body     | Dialog 自身是否插入至 body 元素上。嵌套的 Dialog 必须指定该属性并赋值为 true   | boolean   | — | false |
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| | lock-scroll | 是否在 Dialog 出现时将 body 滚动锁定 | boolean | — | true |
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| | custom-class      | Dialog 的自定义类名 | string    | — | — |
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| | close-on-click-modal | 是否可以通过点击 modal 关闭 Dialog | boolean    | — | true |
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| | close-on-press-escape | 是否可以通过按下 ESC 关闭 Dialog | boolean    | — | true |
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| | show-close | 是否显示关闭按钮 | boolean    | — | true |
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| | before-close | 关闭前的回调,会暂停 Dialog 的关闭 | function(done),done 用于关闭 Dialog | — | — |
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| | center | 是否对头部和底部采用居中布局 | boolean | — | false |
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| 
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| ### Slot
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| | name | 说明 |
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| |------|--------|
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| | — | Dialog 的内容 |
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| | title | Dialog 标题区的内容 |
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| | footer | Dialog 按钮操作区的内容 |
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| 
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| ### Events
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| | 事件名称      | 说明    | 回调参数      |
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| |---------- |-------- |---------- |
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| | open  | Dialog 打开的回调 | — |
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| | close  | Dialog 关闭的回调 | — |
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| | closed | Dialog 关闭动画结束时的回调 | — |
 |