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<template>
<view ref="node" name="LyTreeNode" v-show="node.visible" class="ly-tree-node" :class="{
'is-expanded': expanded,
'is-hidden': !node.visible,
'is-checked': !node.disabled && node.checked
}" role="treeitem" @tap.stop="handleClick">
<view class="ly-tree-node__content" :class="{
'is-current': node.isCurrent && highlightCurrent
}" :style="{
'padding-left': (node.level - 1) * indent + 'px'
}">
<text @tap.stop="handleExpandIconClick" :class="[
{
'is-leaf': node.isLeaf,
expanded: !node.isLeaf && node.expanded
},
'ly-tree-node__expand-icon',
iconClass ? iconClass : 'ly-iconfont ly-icon-caret-right'
]">
</text>
<ly-checkbox v-if="checkboxVisible || radioVisible" :type="checkboxVisible ? 'checkbox' : 'radio'"
:checked="node.checked" :indeterminate="node.indeterminate" :disabled="!!node.disabled"
@check="handleCheckChange(!node.checked)" />
<text v-if="node.loading" class="ly-tree-node__loading-icon ly-iconfont ly-icon-loading">
</text>
<template v-if="node.icon && node.icon.length > 0">
<image v-if="node.icon.indexOf('/') !== -1" class="ly-tree-node__icon" mode="widthFix" :src="node.icon"
@error="handleImageError">
</image>
<text v-else class="ly-tree-node__icon" :class="node.icon">
</text>
</template>
<text class="ly-tree-node__label u-line-1">{{node.label}}</text>
</view>
<view v-if="!renderAfterExpand || childNodeRendered" v-show="expanded" class="ly-tree-node__children"
role="group">
<ly-tree-node v-for="cNodeId in node.childNodesId" :nodeId="cNodeId"
:render-after-expand="renderAfterExpand" :show-checkbox="showCheckbox" :show-radio="showRadio"
:check-only-leaf="checkOnlyLeaf" :key="getNodeKey(cNodeId)" :indent="indent" :icon-class="iconClass">
</ly-tree-node>
</view>
</view>
</template>
<script>
import {
getNodeKey
} from './tool/util.js';
import lyCheckbox from './components/ly-checkbox.vue';
export default {
name: 'LyTreeNode',
componentName: 'LyTreeNode',
components: {
lyCheckbox
},
props: {
nodeId: [Number, String],
renderAfterExpand: {
type: Boolean,
default: true
},
checkOnlyLeaf: {
type: Boolean,
default: false
},
showCheckbox: {
type: Boolean,
default: false
},
showRadio: {
type: Boolean,
default: false
},
indent: Number,
iconClass: String
},
data() {
return {
node: {
indeterminate: false,
checked: false,
expanded: false
},
expanded: false,
childNodeRendered: false,
oldChecked: null,
oldIndeterminate: null,
highlightCurrent: false
};
},
inject: ['tree'],
computed: {
checkboxVisible() {
if (this.checkOnlyLeaf) {
return this.showCheckbox && this.node.isLeaf;
}
return this.showCheckbox;
},
radioVisible() {
if (this.checkOnlyLeaf) {
return this.showRadio && this.node.isLeaf;
}
return this.showRadio;
}
},
watch: {
'node.indeterminate'(val) {
this.handleSelectChange(this.node.checked, val);
},
'node.checked'(val) {
this.handleSelectChange(val, this.node.indeterminate);
},
'node.expanded'(val) {
this.$nextTick(() => this.expanded = val);
if (val) {
this.childNodeRendered = true;
}
}
},
methods: {
getNodeKey(nodeId) {
let node = this.tree.store.root.getChildNodes([nodeId])[0];
return getNodeKey(this.tree.nodeKey, node.data);
},
handleSelectChange(checked, indeterminate) {
if (this.oldChecked !== checked && this.oldIndeterminate !== indeterminate) {
if (this.checkOnlyLeaf && !this.node.isLeaf) return;
if (this.checkboxVisible) {
const allNodes = this.tree.store._getAllNodes();
this.tree.$emit('check-change', {
checked,
indeterminate,
node: this.node,
data: this.node.data,
checkedall: allNodes.every(item => item.checked)
});
} else {
this.tree.$emit('radio-change', {
checked,
node: this.node,
data: this.node.data,
checkedall: false
});
}
}
if (!this.expanded && this.tree.expandOnCheckNode && checked) {
this.handleExpandIconClick();
}
this.oldChecked = checked;
this.indeterminate = indeterminate;
},
handleClick() {
this.tree.store.setCurrentNode(this.node);
this.tree.$emit('current-change', {
node: this.node,
data: this.tree.store.currentNode ? this.tree.store.currentNode.data : null,
currentNode: this.tree.store.currentNode
});
this.tree.currentNode = this.node;
if (this.tree.expandOnClickNode) {
this.handleExpandIconClick();
}
if (this.tree.checkOnClickNode && !this.node.disabled) {
(this.checkboxVisible || this.radioVisible) && this.handleCheckChange(!this.node.checked);
}
this.tree.$emit('node-click', this.node);
},
handleExpandIconClick() {
if (this.node.isLeaf) return;
if (this.expanded) {
this.tree.$emit('node-collapse', this.node);
this.node.collapse();
} else {
this.node.expand();
this.tree.$emit('node-expand', this.node);
if (this.tree.accordion) {
uni.$emit(`${this.tree.elId}-tree-node-expand`, this.node);
}
}
//this.tree.$emit('node-click', this.node);
},
handleCheckChange(checked) {
if (this.node.disabled) return;
if (this.checkboxVisible) {
this.node.setChecked(checked, !(this.tree.checkStrictly || this.checkOnlyLeaf));
} else {
this.node.setRadioChecked(checked);
}
this.$nextTick(() => {
this.tree.$emit('check', {
node: this.node,
data: this.node.data,
checkedNodes: this.tree.store.getCheckedNodes(),
checkedKeys: this.tree.store.getCheckedKeys(),
halfCheckedNodes: this.tree.store.getHalfCheckedNodes(),
halfCheckedKeys: this.tree.store.getHalfCheckedKeys()
});
});
},
handleImageError() {
this.node.icon = this.tree.defaultNodeIcon;
}
},
created() {
if (!this.tree) {
throw new Error('Can not find node\'s tree.');
}
this.node = this.tree.store.nodesMap[this.nodeId];
this.highlightCurrent = this.tree.highlightCurrent;
if (this.node.expanded) {
this.expanded = true;
this.childNodeRendered = true;
}
const props = this.tree.props || {};
const childrenKey = props['children'] || 'children';
this.$watch(`node.data.${childrenKey}`, () => {
this.node.updateChildren();
});
if (this.tree.accordion) {
uni.$on(`${this.tree.elId}-tree-node-expand`, node => {
if (this.node.id !== node.id && this.node.level === node.level) {
this.node.collapse();
}
});
}
},
beforeDestroy() {
this.$parent = null;
}
};
</script>
<style>
.ly-tree-node {
white-space: nowrap;
outline: 0
}
.ly-tree-node__content {
display: flex;
align-items: center;
height: 70rpx;
}
.ly-tree-node__content.is-current {
background-color: #F5F7FA;
}
.ly-tree-node__content>.ly-tree-node__expand-icon {
padding: 12rpx;
}
.ly-tree-node__checkbox {
display: flex;
margin-right: 16rpx;
width: 40rpx;
height: 40rpx;
}
.ly-tree-node__checkbox>image {
width: 40rpx;
height: 40rpx;
}
.ly-tree-node__expand-icon {
color: #C0C4CC;
font-size: 28rpx;
-webkit-transform: rotate(0);
transform: rotate(0);
-webkit-transition: -webkit-transform .3s ease-in-out;
transition: -webkit-transform .3s ease-in-out;
transition: transform .3s ease-in-out;
transition: transform .3s ease-in-out, -webkit-transform .3s ease-in-out
}
.ly-tree-node__expand-icon.expanded {
-webkit-transform: rotate(90deg);
transform: rotate(90deg)
}
.ly-tree-node__expand-icon.is-leaf {
color: transparent;
}
.ly-tree-node__icon {
overflow: hidden;
margin-right: 16rpx;
}
.ly-tree-node__label {
max-width: 500rpx;
font-size: 28rpx;
}
.ly-tree-node__loading-icon {
margin-right: 16rpx;
font-size: 28rpx;
color: #C0C4CC;
-webkit-animation: rotating 2s linear infinite;
animation: rotating 2s linear infinite
}
.ly-tree-node>.ly-tree-node__children {
overflow: hidden;
background-color: transparent
}
.ly-tree-node>.ly-tree-node__children.collapse-transition {
transition: height .3s ease-in-out;
}
.ly-tree-node.is-expanded>.ly-tree-node__children {
display: block
}
.ly-tree-node_collapse {
overflow: hidden;
padding-top: 0;
padding-bottom: 0;
}
/* lyTree-end */
/* iconfont-start */
@font-face {
font-family: "ly-iconfont";
src: url('data:application/x-font-woff2;charset=utf-8;base64,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') format('woff2');
}
.ly-iconfont {
font-family: "ly-iconfont" !important;
font-size: 30rpx;
font-style: normal;
-webkit-font-smoothing: antialiased;
-moz-osx-font-smoothing: grayscale;
}
.ly-icon-caret-right:before {
content: "\e8ee";
}
.ly-icon-loading:before {
content: "\e657";
}
/* iconfont-end */
/* animate-start */
@keyframes rotating {
0% {
-webkit-transform: rotateZ(0);
transform: rotateZ(0)
}
100% {
-webkit-transform: rotateZ(360deg);
transform: rotateZ(360deg)
}
}
/* animate-end */
</style>