sl-vue-tree
Version:
draggable tree vue component
178 lines (137 loc) • 4.13 kB
HTML
<html lang="en">
<head>
<meta charset="UTF-8">
<title>sl-vue-tree</title>
<link rel="stylesheet" href="../dist/sl-vue-tree-dark.css">
<link href="https://use.fontawesome.com/releases/v5.0.8/css/all.css" rel="stylesheet">
<script src="https://cdn.jsdelivr.net/npm/vue@2.5.16/dist/vue.js"></script>
<script src="../dist/sl-vue-tree.js"></script>
</head>
<body>
<div id="app"
>
<h2> Sl-vue-tree - Press Up and Down to move selection, Space and Enter to expand / collapse</h2>
<a href="./dark-theme.html" target="_blank">Source code</a>
<br><br>
<div class="row">
<div class="tree-container">
<sl-vue-tree
v-model="nodes"
ref="slVueTree"
>
<template slot="title" slot-scope="{ node }">
<span class="item-icon">
<i class="fa fa-file" v-if="node.isLeaf"></i>
<i class="fa fa-folder" v-if="!node.isLeaf"></i>
</span>
{{ node.title }}
</template>
<template slot="toggle" slot-scope="{ node }">
<span v-if="!node.isLeaf">
<i v-if="node.isExpanded" class="fa fa-chevron-down"></i>
<i v-if="!node.isExpanded" class="fa fa-chevron-right"></i>
</span>
</template>
</sl-vue-tree>
</div>
<div class="json-preview">
<pre>{{ JSON.stringify(nodes, null, 4)}}</pre>
</div>
</div>
</div>
<script>
var nodes = [
{title: 'Item1', isLeaf: true},
{title: 'Item2', isLeaf: true},
{
title: 'Folder1', isExpanded: false, children: [
{title: 'Item3', isLeaf: true},
{title: 'Item4', isLeaf: true},
{
title: 'Folder2', children: [
{title: 'Item5', isLeaf: true}
]
}
]
},
{title: 'Item6', isLeaf: true}
];
new Vue({
el: '#app',
components: { SlVueTree },
data: function () {
return {
nodes: nodes
}
},
mounted() {
// expose instance to the global namespace for better debugging
window.slVueTree = this.$refs.slVueTree;
// handle key events
window.addEventListener('keydown', (event) => this.onArrowDownHandler(event));
},
methods: {
onArrowDownHandler(event) {
event.preventDefault();
const keyCode = event.code;
const slVueTree = this.$refs.slVueTree;
if (slVueTree.selectionSize === 1) {
const selectedNode = slVueTree.getSelected()[0];
let nodeToSelect;
if (keyCode === 'ArrowDown') {
nodeToSelect = slVueTree.getNextNode(selectedNode.path, node => node.isVisible);
} else if (keyCode === 'ArrowUp') {
nodeToSelect = slVueTree.getPrevNode(selectedNode.path, node => node.isVisible);
} else if (keyCode === 'Enter' || keyCode === 'Space') {
if (selectedNode.isLeaf) return;
slVueTree.updateNode(selectedNode.path, { isExpanded: !selectedNode.isExpanded });
}
if (!nodeToSelect) return;
slVueTree.select(nodeToSelect.path);
} else if (keyCode === 'ArrowDown') {
slVueTree.select(slVueTree.getFirstNode().path);
} else if (keyCode === 'ArrowUp') {
slVueTree.select(slVueTree.getLastNode().path);
}
}
}
})
</script>
<style>
body {
background: #050d12;
font-family: Arial;
color: rgba(255, 255, 255, 0.5);
}
a {
color: #bbb;
}
.row {
display: flex;
margin-bottom: 10px;
}
.tree-container {
flex-grow: 1;
}
.sl-vue-tree.sl-vue-tree-root {
flex-grow: 1;
overflow-x: hidden;
overflow-y: auto;
height: 300px;
}
.json-preview {
flex-grow: 1;
margin-left: 10px;
background-color: #13242d;
border: 1px solid black;
padding: 10px;
}
.item-icon {
display: inline-block;
text-align: left;
width: 20px;
}
</style>
</body>
</html>