react-propsTransition

Declare a property to transition. Whenever this props change, the component render is called with ( previous, next ) so you can hook whatever animation.

  Flow diagram :

    k = 'a'             k change to 'b'
                             |
                             |<------------delay---------------->|
    . . . -------------------|-----------------------------------|---------------------->
        next     : a         |       next     : b                |   next     : b
        previous : null              previous : a                    previous : null

        transition : false           transition : true               transition : false

Usage

import {Transition} from 'react-propsTransition'

const Component = ({ value }) =>
  <Transition toTransition={value} delay={300}>
    {
      ({ next, previous, transition }) =>
        <span>{
          transition
            ? `The value was ${previous}, it will be ${next}`
            : `The value is ${next}`
        }</span>
    }
  </Transition>

Options

• toTransition the value to transition, can be a primitive or an object
• delay delay of the transition, in ms
• equal check for value change, ( default is == )

IndirectTransition

The indirect transition have the same api, but transition only from a value to null and from null to a value.

When the direct transition goes A -> B, the indirect goes A -> null -> B ( with A != null and B != null )

  Flow diagram :

  k = 'a'             k change to 'b'
                               |
                               |<------------delay---------------->|<------------delay---------------->|
      . . . -------------------|-----------------------------------|-----------------------------------|-------------------------->
          next     : a         |       next     : null             |        next     : b               |      next     : b
          previous : null              previous : a                         previous : null                   previous : null
  
         transition : false            transition : true                    transition : true                 transition : false
  
                                       indirectNext: b                      indirectNext: null
                                       transitionIndirect: true             transitionIndirect: false

Example

Animate the fadeIn, fadeOff of a drawer

const Drawer = ({ opened }) =>
  <Transition toTransition={opened} delay={300}>
    {
      ({ next, previous, transition }) =>
        (next || previous) &&
          <div className={'drawer' + (transition ? (next ? 'drawer--fadeIn' : 'drawer--fadeOut') : '')}>
            <Content />
          </div>
    }
  </Transition>