CODEWITHSUNDEEP
javascriptcssreactjscss-animationstransition
frankgreco
frankgreco

Reputation: 1506

Slide Up Transition of React Component

I am just starting to use animations/transition in my React.js projects. In the GIF below, when I close a Message component, it fades out. After it fades, I hide the component using onAnimationEnd.

What I want to happen is when a Message disappears have the below Components slide up. I am unsure conceptually how I would accomplish this either via a CSS animation/transition or via a React specific way.

enter image description here

Message.js

import React, {PropTypes, Component} from 'react';
import MessageTypes from '../constants/MessageTypes';

export default class Message extends Component {

    constructor(props, context) {
        super(props, context);
        this.handleClick = this.handleClick.bind(this);
        this.onAnimationEnd = this.onAnimationEnd.bind(this);
        this.state = {
            animate: false,
            hide: false
        }
    }

    handleClick(e) {
        e.preventDefault();
        this.setState({animate: true});
    }

    onAnimationEnd() {
        console.log('fdsfd');
        this.setState({hide: true});
    }

    render() {
        return (
            <div ref="message" onAnimationEnd={this.onAnimationEnd} className={`card message ${this.state.hide ? 'hide open' : ''} ${this.state.animate ? 'message-transition-fade-out' : ''}`}>
                <span className={`icon icon-${this.iconLevel()}`} style={{color: `#${this.iconColor()}`}}></span>
                <p>
                    <strong>{this.props.title}</strong><br />
                    <span dangerouslySetInnerHTML={{ __html: this.props.message }} />
                </p>
                <a href="#" onClick={this.handleClick}>
                    <span className="icon icon-close"></span>
                </a>
            </div>  
        );
    }

}

Message.scss

.message {

    max-height: 150px;
    transition: height 2s ease;

    &.open {
        height: 0; //define your height or use max-height
    }

    &-transition {

        &-fade-out {

            @include animation(0s, .3s, fadeout);

        }

    }
}

Upvotes: 1

Views: 4071

Answers (2)

frankgreco
frankgreco

Reputation: 1506

There is an npm module called react-collapse that does the trick.

<Collapse isOpened={this.state.isOpened} keepCollapsedContent={true}>
     //content here
</Collapse>

Here are the results:

enter image description here

Upvotes: 1

Pranesh Ravi
Pranesh Ravi

Reputation: 19113

I would suggest you to use css transitions.

Have a class called open attached to the root of the Message component. onAnimationEnd remove the class open. Now, use height to animate that class.

Pseudo code.

.message {
 height: 0px;
 transition: height 0.3s ease;
}

.message.open {
  height: 100px; //define your height or use max-height  
}

Upvotes: 2

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