Package Exports

react-inline-transition-group

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Readme

React Inline Transition Group

This component helps you to control transitions defined with inline styles. Built with ReactTransitionHooks, the goal is to supply a better alternative to ReactCSSTransitionGroup.

Advantages

You don't need to decouple your styles from the component.
You don't need to supply timeout properties as in ReactCSSTransitionGroup.
You have callbacks to control the start and end of your transitions for each child.
Facebook will drop support for ReactCSSTransitionGroup.
ReactCSSTransitionGroup uses timeouts to control the animations which means some situations can break its behavior, like in frame rates slower than 60fps.
ReactCSSTransitionGroup uses ReactTransitionGroup which means you can not interrupt animations.

Live Demo

Check out the demo.

How to install

npm install react-inline-transition-group

How to use

Import the component to your project and then wrap the nodes you want to control the transition with it. Example:

var React = require('react');
var Transition = require('react-inline-transition-group');

React.createClass({
  getInitialState: function () { return { count: 1 }; },

  handleAdd: function () {
    this.setState(function (previousState) {
      return { count: previousState.count + 1 };
    });
  },

  handleRemove: function () {
    this.setState(function (previousState) {
      return { count: Math.max(previousState.count - 1, 0) };
    });
  },

  leaveCallback: function (id) { console.log(id + ' left'); },

  render: function () {
    var styles = {
      base: {
        background: '#F00',
        width: '500px',
        height: '50px',
      },

      appear: {
        background: '#FF0',
        transition: 'all 500ms',
      },

      leave: {
        background: '#F00',
        transition: 'all 250ms',
      }
    };

    var elems = [];

    for (var i = 0; i < this.state.count; i++)
      elems.push(<div key={i} id={i}>{i}</div>);

    return (
      <div>
        <div>
          <button onClick={this.handleAdd}>Add</button>
          <button onClick={this.handleRemove}>Remove</button>
        </div>
        <Transition
          childrenBaseStyle={styles.before}
          childrenAppearStyle={styles.appear}
          childrenEnterStyle={styles.appear}
          childrenLeaveStyle={styles.leave}
          onChildLeft={this.leaveCallback}
        >
          {elems}
        </Transition>
      </div>
    );
  }
});

Properties

Property name	Description
component	String. The component that will wrap all the children. Default: div
childrenBaseStyle	Object. Style that will be applied to all children in all transition phases
childrenAppearStyle	Object. Style that will be merged into baseStyle to make the appear transition
childrenEnterStyle	Object. Style that will be merged into baseStyle to make the enter transition
childrenLeaveStyle	Object. Style that will be merge d into baseStyle to make the leave transition
onChildAppeared	Function. Callback that will be called with the child id when the component appeared
onChildEntered	Function. Callback that will be called with the child id when the component entered
onChildLeft	Function. Callback that will be called with the child id when the component left
onChildStartAppear	Function. Callback that will be called with the child id when the component start to appear
onChildStartEnter	Function. Callback that will be called with the child id when the component start to enter
onChildStartLeave	Function. Callback that will be called with the child id when the component start to leave
propertyName	String. The name of the CSS property you want the final callbacks (onChildAppeared, onChildEntered, onChildLeft) to be called for. If specified these callbacks will be called when the transition for this CSS property is complete, otherwise they will be called for the transition with the longest duration. This property is optional, but it can improve performance if you need to.

Observation: You can pass an id property to your children components and the callback will be called with it so you know exactly for which child the event happened. This id is optional.

Observation 2: The start callbacks will be called sooner a node is being added or removed to/from the group. If you have a delay in your CSS transition the component will not wait until the delay is complete to call the callbacks.

Observation 3: The end callbacks will be called when the longest transition time (delay + duration) completes or when the transition for the specified CSS property using propertyName completes.

LICENSE

BSD-3