xoidrag

xoidrag is an extremely customizable drag-and-drop library. It was designed for drag-and-drop behaviors that the developer wants the full control of, without copying over a whole library to their repo, or implementing the thing from scratch. It has a framework-agnsotic core. Mobile/touch devices are supported.

To install:

npm install xoidrag xoid @xoid/feature

It currently offers 2 presets:

• xoidrag/presets/default - The default one, also exported from the root
• xoidrag/presets/autoscroll - Default one with autoscroll + needs scrollparent optional dependency

Usage

Vanilla JS

import createDraggable from "xoidrag"
const { draggableMap, droppableMap } = createDraggable(instanceOptions)

// Usage
document.querySelectorAll('.draggable')
  .forEach((element) => draggableMap.set(element, options))

document.querySelectorAll('.droppable')
  .forEach((element) => droppableMap.set(element, options))

instanceOptions are things like handleClass, disabledClass, dragStartDelay, positionDamping for the default preset. options are individual, element-specific things like onDrop, onDrag, disabled, etc.

React

import createDraggable from "xoidrag"
import createReactAPI from "xoidrag/react"

const draggable = createDraggable(instanceOptions)
const { useDraggable, useDroppable } = createReactAPI(draggable)

// Usage (in a React component)
const ref = useRef()
useDroppable({
  ref,
  onDrop: () => {},
  onDragEnter: () => {},
  onDragLeave: () => {},
})

Building custom presets

It was built on top of the plugin system: @xoid/feature, and xoid as the state manager. If you're going to build your own preset, it offers the following modules:

• xoidrag/features/Context
• xoidrag/features/DragHelper
• xoidrag/features/DropHelper
• xoidrag/features/DragOverHelper
• xoidrag/features/DragPreviewHelper
• xoidrag/features/AutoScrollHelper ...

A custom preset looks like the following:

import { compose } from '@xoid/feature';
import Context from 'xoidrag/features/Context';
import DragHelper from 'xoidrag/features/DragHelper';
import DragOverHelper from 'xoidrag/features/DragOverHelper';
import DragPreviewHelper from 'xoidrag/features/DragPreviewHelper';
import DropHelper from 'xoidrag/features/DropHelper';

const createDraggable = compose(
  [Context, DragHelper, DragPreviewHelper, DragOverHelper, DropHelper],
  (from, imaginary) => from(Context<typeof imaginary.context.types>)
);

export default createDraggable;

You can also extends a feature and use the new class. For more, checkout @xoid/feature docs on npm.

import DragOverHelper from 'xoidrag/features/DragOverHelper'

class CustomDragOverHelper extends DragOverHelper {
  getTargetCoordinates(e) {
    return {x: e.clientX, y: e.clientY }
  }
}

const createDraggable = compose(
  [
    ...,
    CustomDragOverHelper,
    ...,
  ],
  (from, imaginary) => from(Context<typeof imaginary.context.types>)
);