withDrag

Adds a dragged(props) hook from the drag service.

Usage

import { Base, withDrag } from '@studiometa/js-toolkit';

export default class Draggable extends withDrag(Base, {
  target: (instance) => instance.$el,
  dampFactor: 0.5,
}) {
  static config = {
    name: 'Draggable',
  };

  /**
   * @param {import('@studiometa/js-toolkit').DragServiceProps} props
   */
  dragged(props) {
    this.$el.style.transform = `translate(${props.x}px, ${props.y}px)`;
  }
}

Parameters

• BaseClass (Base): The class to add draggable capabilities to
• options? ({ target?: (instance:Base) => HTMLElement, dampFactor?: number }): Options to choose the draggable target element and the drag dampFactor.

Return value

• Base: A child of the given class with draggable capabilities

API

Hooks

dragged

The dragged hook runs while the user drags the target element.

Arguments

• props (DragServiceProps): the drag service props

Examples

Move the root element

This decorator adds drag capabilities to the root element of a component.

import { Base, withDrag } from '@studiometa/js-toolkit';

export default class Draggable extends withDrag(Base) {
  static config = {
    name: 'Draggable',
  };

  /**
   * @param {import('@studiometa/js-toolkit').DragServiceProps} props
   */
  dragged(props) {
    this.$el.style.transform = `translate(${props.x}px, ${props.y}px)`;
  }
}

TIP

We recommend using the domScheduler utility to update the root element position, see the Draggable component source for more details.

Move a ref element

import { Base, withDrag } from '@studiometa/js-toolkit';

export default class Draggable extends withDrag(Base, {
  target: (instance) => instance.$refs.draggbale,
}) {
  static config = {
    name: 'Draggable',
    refs: ['draggable'],
  };

  /**
   * @param {import('@studiometa/js-toolkit').DragServiceProps} props
   */
  dragged(props) {
    this.$refs.draggable.style.transform = `translate(${props.x}px, ${props.y}px)`;
  }
}

TIP

You can use the transform(element, transforms) function to apply transform to an element.