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Add drag handles #102

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124 changes: 124 additions & 0 deletions dev/handles.html
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Original file line number Diff line number Diff line change
@@ -0,0 +1,124 @@
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">

<title>Nested Sort | Drag Handles Demo</title>
<link href="https://fonts.googleapis.com/css2?family=Roboto:wght@300&display=swap" rel="stylesheet">
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.7.0/css/font-awesome.min.css" integrity="sha512-SfTiTlX6kk+qitfevl/7LibUOeJWlt9rbyDn92a1DqWOw9vWG2MFoays0sgObmWazO5BQPiFucnnEAjpAB+/Sw==" crossorigin="anonymous" referrerpolicy="no-referrer" />
<link href="css/main.css" rel="stylesheet">
<style>
.nested-sort li {
padding: 0;
cursor: default;
}

.nested-sort li>ul {
margin: 10px 10px 10px 20px;
}

.nested-sort .item {
display: flex;
column-gap: 2rem;
padding: 10px;
}

.nested-sort .ns-handle {
cursor: move;
}
</style>
</head>
<body>

<div class="container">
<h1>Drag Handles Demo</h1>

<div class="sample-wrap">
<ul id="draggable">
<li data-id="1">
<div class="item">
<div class="icon ns-handle"><i class="fa fa-arrows"></i></div>
<div class="title">Topic 1</div>
</div>
</li>
<li data-id="2">
<div class="item">
<div class="icon ns-handle"><i class="fa fa-arrows"></i></div>
<div class="title">Topic 2</div>
</div>
</li>
<li data-id="3">
<div class="item">
<div class="icon ns-handle"><i class="fa fa-arrows"></i></div>
<div class="title">Topic 3</div>
</div>
</li>
<li data-id="4">
<div class="item">
<div class="icon ns-handle"><i class="fa fa-arrows"></i></div>
<div class="title">Topic 4</div>
</div>
</li>
<li data-id="5">
<div class="item">
<div class="icon ns-handle"><i class="fa fa-arrows"></i></div>
<div class="title">Topic 5</div>
</div>
</li>
<li data-id="6">
<div class="item">
<div class="icon ns-handle"><i class="fa fa-arrows"></i></div>
<div class="title">Topic 6</div>
</div>
</li>
<li data-id="7">
<div class="item">
<div class="icon ns-handle"><i class="fa fa-arrows"></i></div>
<div class="title">Topic 7</div>
</div>
</li>
<li data-id="8">
<div class="item">
<div class="icon ns-handle"><i class="fa fa-arrows"></i></div>
<div class="title">Topic 8</div>
</div>
</li>
<li data-id="9">
<div class="item">
<div class="icon ns-handle"><i class="fa fa-arrows"></i></div>
<div class="title">Topic 9</div>
</div>
</li>
<li data-id="10">
<div class="item">
<div class="icon ns-handle"><i class="fa fa-arrows"></i></div>
<div class="title">Topic 10</div>
</div>
</li>
</ul>
<pre class="result-wrap"></pre>
</div>
</div>

<!-- Scripts -->
<script src="../dist/nested-sort.umd.js"></script>
<script>
new NestedSort({
actions: {
onDrop: function (data) {
const resultWrap = document.querySelector('.result-wrap')
resultWrap.innerHTML = JSON.stringify(data, null, ' ')
console.log(data)
}
},
el: '#draggable',
droppingEdge: 5,
nestingLevels: -1,
classNames: {
handle: 'ns-handle',
},
})
</script>
</body>
</html>
1 change: 1 addition & 0 deletions dev/index.html
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Expand Up @@ -23,6 +23,7 @@ <h1>Samples</h1>
<li><a href="data-persistence-in-local-storage" target="_blank">Persisting Data in Local Storage</a></li>
<li><a href="enable-disable" target="_blank">Enable / Disable</a></li>
<li><a href="nesting-levels" target="_blank">Nesting Levels</a></li>
<li><a href="handles" target="_blank">Drag Handles</a></li>
<li><a href="custom-render" target="_blank">Custom Render</a></li>
</ol>

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21 changes: 18 additions & 3 deletions src/main.ts
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Expand Up @@ -34,6 +34,7 @@ class NestedSort {
listInterface: ListInterface
listItemClassNames: Array<string>
mainListClassName: string
mouseTarget: HTMLElement
nestingLevels: number
placeholderList: HTMLElement
placeholderInUse: HTMLElement
Expand All @@ -46,6 +47,7 @@ class NestedSort {

constructor({
actions = {},
classNames,
data,
droppingEdge = 15,
el,
Expand Down Expand Up @@ -75,16 +77,21 @@ class NestedSort {
droppingEdge,
}
this.classNames = {
dragged: 'ns-dragged',
placeholder: 'ns-placeholder',
targeted: 'ns-targeted',
...{
dragged: 'ns-dragged',
handle: null,
placeholder: 'ns-placeholder',
targeted: 'ns-targeted',
},
...classNames,
}
this.listEventListeners = {
dragover: this.onDragOver.bind(this),
dragstart: this.onDragStart.bind(this),
dragenter: this.onDragEnter.bind(this),
dragend: this.onDragEnd.bind(this),
drop: this.onDrop.bind(this),
mousedown: this.onMouseDown.bind(this),
}
const intNestingLevels = parseInt(nestingLevels)
this.nestingLevels = isNaN(intNestingLevels) ? -1 : intNestingLevels // values less than 0 mean infinite levels of nesting
Expand Down Expand Up @@ -209,6 +216,10 @@ class NestedSort {
}

onDragStart(e: DragEvent): void {
if (this.classNames.handle && ! this.mouseTarget.closest(`.${this.classNames.handle}`)) {
e.preventDefault() // Don't allow dragging if handles are specified
return
}
this.draggedNode = e.target as HTMLElement
this.draggedNode.classList.add(this.classNames.dragged)
e.dataTransfer?.setData('text', '') // Hack for mobile devices
Expand Down Expand Up @@ -247,6 +258,10 @@ class NestedSort {
}
}

onMouseDown(e: MouseEvent): void {
this.mouseTarget = e.target as HTMLElement
}

updateCoordination(e: DragEvent): void {
this.calcMouseCoords(e)
this.calcMouseToTargetedElDist()
Expand Down
3 changes: 3 additions & 0 deletions src/types/index.d.ts
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Expand Up @@ -14,6 +14,7 @@ export type PlaceholderMaintenanceActions = Array<'add' | 'cleanup'>

export interface ClassNames {
dragged: string
handle: string | null
placeholder: string
targeted: string
}
Expand Down Expand Up @@ -62,12 +63,14 @@ export interface EventListeners {
dragenter: (e: object) => void
dragend: (e: object) => void
drop: (e: object) => void
mousedown: (e: object) => void
}

export type ClassNamesList = Array<string> | string

export interface Options {
actions: Actions
classNames: ClassNames
data: Array<DataItem>
droppingEdge: number
el: HTMLElement | string
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