/ List

React component for a list of draggable collapsible items

React component for a list of draggable collapsible items

react-draggable-list

This component lets you make a user re-orderable list that animates nicely so that the user can easily move large items:

You can find its code in the example directory. The example may be compiled
by running:

yarn
yarn example-build

You can build the example with live editing enabled (using
react-transform-hmr and
browserify-hmr) by running:

yarn example-watch

DraggableList

This module exports the DraggableList React component, which takes the
following props:

  • list must be an array of objects representing your list's items.
  • itemKey must be the name of a property of the list's objects to use as a
    key to identify the objects, or it must be a function that takes an object as
    an argument and returns a key.
  • template must be a React component used to render the list items. This must
    not be a stateless-functional component. If possible, don't pass a new
    class instance on every render. See the next section for more information
    on the template including a description of the props passed to the component.
  • onMoveEnd may be a function which will be called when the user drags and
    drops an item to a new position in the list. The arguments to the function
    will be (newList: Array<Object>, movedItem: Object, oldIndex: number, newIndex: number).
  • container: If the DraggableList is inside a scrollable element, then this
    property should be set to a function which returns a reference to it. When the
    user moves an item in the list, the container will be scrolled to keep the
    item in view. If the DraggableList is in no scrollable elements besides the
    page itself, then a function returning a reference to document.body should
    be given.
  • springConfig is an optional object which sets the SpringHelperConfig
    object passed to
    React-Motion

    for animations. This prop defaults to {stiffness: 300, damping: 50}.
  • padding is an optional number of pixels to leave between items. Defaults to 10.
  • unsetZIndex is an optional property that defaults to false. If set to true,
    then the z-index of all of the list items will be set to "auto" when the list
    isn't animating. This may have a small performance cost when the list starts
    and stops animating. Use this if you need to avoid having the list item create
    a stacking context when it's not being animated.
  • constrainDrag is an option property that defaults to false. If it is set to
    true, then the y-coordinate of a dragged item will be constrained vertically to
    the bounds of the list.
  • autoScrollMaxSpeed is an optional number that allows the scroll speed when
    the user drags to the top or bottom of the list to be overridden.
  • autoScrollRegionSize is an optional number that allows the height of the
    region that triggers auto-scrolling when dragged onto to be overridden.
  • commonProps is an optional value that will be passed as the commonProps
    prop to every template component instance.

A DraggableList instance has the following methods:

  • getItemInstance(key) will return a reference to the mounted instance of the
    template for a given key.

Template

The template component is passed the following props:

  • item is an object from the list prop passed to DraggableList.
  • itemSelected is a number from 0 to 1. It starts at 0, and quickly increases
    to 1 when the item is picked up by the user. This may be used to animate the
    item when the user picks it up or drops it.
  • anySelected is a number from 0 to 1. It starts at 0, and quickly increases
    to 1 when any item is picked up by the user.
  • dragHandle is a function which should be used during rendering to wrap the
    element to be used as the drag handle. The whole item will be draggable by the
    wrapped element.
  • commonProps will be set to the same value passed as the commonProps prop
    to the DraggableList component.

The template component should be styled with max-height set to "100%" for best
results.

The template component will have its props updated many times quickly during
the animation, so implementing shouldComponentUpdate in its children is
highly recommended.

The template component may have a getDragHeight method which may return a
number to set the height in pixels of the item while the user is dragging it.
If the method returns null or is not present, then the drag height will be
equal to the element's natural height.

Bundling Note

To use this module in browsers, a CommonJS bundler such as Browserify or
Webpack should be used.

This project relies on Map and WeakMap being available globally. A global polyfill
such as Babel's polyfill is required to
support older browsers that don't implement these.

Types

Flow type declarations for this module are included!
If you are using Flow, they won't require any configuration to use.

GitHub