Merge pull request #230 from Leopoldthecoder/tree

add callbacks on tree
pull/257/head
SkyAo 2016-10-08 11:02:56 +08:00 committed by GitHub
commit 2d444d42ab
4 changed files with 72 additions and 17 deletions

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@ -12,6 +12,7 @@
- 为 Notification 和 Message 的不同 type 添加独立的调用方法
- 为 Message Box 和 Dialog 添加 lockScroll 属性,用于定义是否在弹框出现时将 body 滚动锁定
- 新增 Input textarea 类型的 rows, autosize 属性
- 为 Tree 添加 getCheckedNodes 方法和 node-click、check-change 回调
### 1.0.0-rc.5

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@ -58,16 +58,21 @@
export default {
methods: {
handleCheckChange(data, checked, indeterminate) {
console.log(data, checked, indeterminate);
},
handleNodeClick(data) {
console.log(data);
},
loadNode(node, resolve) {
console.log(node);
if (node.level === -1) {
return resolve([{ name: 'Root1' }, { name: 'Root2' }]);
return resolve([{ name: 'region1' }, { name: 'region2' }]);
}
if (node.level > 4) return resolve([]);
var hasChild;
if (node.data.name === 'Root1') {
if (node.data.name === 'region1') {
hasChild = true;
} else if (node.data.name === 'Root2') {
} else if (node.data.name === 'region2') {
hasChild = false;
} else {
hasChild = Math.random() > 0.5;
@ -111,7 +116,7 @@
::: demo
```html
<el-tree :data="data" :props="defaultProps"></el-tree>
<el-tree :data="data" :props="defaultProps" @node-click="handleNodeClick"></el-tree>
<script>
export default {
@ -154,7 +159,14 @@
::: demo
```html
<el-tree :data="regions" :props="props" :load="loadNode" lazy show-checkbox></el-tree>
<el-tree
:data="regions"
:props="props"
:load="loadNode"
lazy
show-checkbox
@check-change="handleCheckChange">
</el-tree>
<script>
export default {
@ -173,18 +185,27 @@
};
},
methods: {
getCheckedNodes() {
console.log(this.$refs.tree.getCheckedNodes(true));
handleCheckChange(data, checked, indeterminate) {
console.log(data, checked, indeterminate);
},
handleNodeClick(data) {
console.log(data);
},
loadNode(node, resolve) {
console.log(node);
if (node.level === -1) {
return resolve([{ name: 'Root1' }, { name: 'Root2' }]);
return resolve([{ name: 'region1' }, { name: 'region2' }]);
}
var hasChild = Math.random() > 0.5;
if (node.level > 4) return resolve([]);
var hasChild;
if (node.data.name === 'region1') {
hasChild = true;
} else if (node.data.name === 'region2') {
hasChild = false;
} else {
hasChild = Math.random() > 0.5;
}
setTimeout(function() {
var data;
if (hasChild) {
@ -213,6 +234,7 @@
| data | 展示数据 | array | — | — |
| props | 配置选项,具体看下表 | object | — | — |
| load | 加载子树数据的方法 | function(node, resolve) | — | — |
| show-checkbox | 节点是否可被选择 | boolean | — | false |
### props
@ -220,3 +242,16 @@
|---------- |-------------- |---------- |-------------------------------- |-------- |
| label | 指定节点标签为节点对象的某个属性值 | string | — | — |
| children | 指定子树为节点对象的某个属性值 | string | — | — |
### 方法
`Tree` 拥有如下方法,返回目前被选中的节点数组:
| 方法名 | 说明 | 参数 |
|------|--------|------|
| getCheckedNodes | 若节点可被选择(即 `show-checkbox``true`<br>则返回目前被选中的节点所组成的数组 | 接收一个 boolean 类型的参数,若为 `true`<br>仅返回被选中的叶子节点,默认值为 `false` |
### Events
| 事件名称 | 说明 | 回调参数 |
|---------- |-------- |---------- |
| node-click | 节点被点击时的回调 | 传递给 `data` 属性的数组中该节点所对应的对象 |
| check-change | 节点选中状态发生变化时的回调 | 共三个参数,依次为:传递给 `data` 属性的数组中该节点所对应的对象、<br>节点本身是否被选中、节点的子树中是否有被选中的节点 |

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@ -28,12 +28,10 @@ export default class Tree {
getCheckedNodes(leafOnly) {
const checkedNodes = [];
const walk = function(node) {
const children = node.children;
const children = node.root ? node.root.children : node.children;
children.forEach(function(child) {
if ((!leafOnly && child.checked) || (leafOnly && !child.hasChild && child.checked)) {
checkedNodes.push(child.data);
} else {
if ((!leafOnly && child.checked) || (leafOnly && child.isLeaf && child.checked)) {
checkedNodes.push(child.data);
}

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@ -46,11 +46,31 @@
$tree: null,
expanded: false,
childrenRendered: false,
showCheckbox: false
showCheckbox: false,
oldChecked: null,
oldIndeterminate: null
};
},
watch: {
'node.indeterminate'(val) {
this.handleSelectChange(this.node.checked, val);
},
'node.checked'(val) {
this.handleSelectChange(val, this.node.indeterminate);
}
},
methods: {
handleSelectChange(checked, indeterminate) {
if (this.oldChecked !== checked && this.oldIndeterminate !== indeterminate) {
this.$tree.$emit('check-change', this.node.data, checked, indeterminate);
}
this.oldChecked = checked;
this.indeterminate = indeterminate;
},
handleExpandIconClick(event) {
let target = event.target;
if (target.tagName.toUpperCase() !== 'DIV' &&
@ -65,6 +85,7 @@
this.childrenRendered = true;
});
}
this.$tree.$emit('node-click', this.node.data);
},
handleUserClick() {