hometown/app/javascript/mastodon/features/ui/components/media_modal.js

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import React from 'react';
import ReactSwipeableViews from 'react-swipeable-views';
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import ImmutablePropTypes from 'react-immutable-proptypes';
import PropTypes from 'prop-types';
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import ExtendedVideoPlayer from '../../../components/extended_video_player';
import { defineMessages, injectIntl } from 'react-intl';
import IconButton from '../../../components/icon_button';
import ImmutablePureComponent from 'react-immutable-pure-component';
import ImageLoader from './image_loader';
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const messages = defineMessages({
close: { id: 'lightbox.close', defaultMessage: 'Close' },
previous: { id: 'lightbox.previous', defaultMessage: 'Previous' },
next: { id: 'lightbox.next', defaultMessage: 'Next' },
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});
@injectIntl
export default class MediaModal extends ImmutablePureComponent {
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static propTypes = {
media: ImmutablePropTypes.list.isRequired,
index: PropTypes.number.isRequired,
onClose: PropTypes.func.isRequired,
intl: PropTypes.object.isRequired,
};
state = {
index: null,
};
handleSwipe = (index) => {
this.setState({ index: (index) % this.props.media.size });
}
handleNextClick = () => {
this.setState({ index: (this.getIndex() + 1) % this.props.media.size });
}
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handlePrevClick = () => {
this.setState({ index: (this.props.media.size + this.getIndex() - 1) % this.props.media.size });
}
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handleKeyUp = (e) => {
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switch(e.key) {
case 'ArrowLeft':
this.handlePrevClick();
break;
case 'ArrowRight':
this.handleNextClick();
break;
}
}
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componentDidMount () {
window.addEventListener('keyup', this.handleKeyUp, false);
}
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componentWillUnmount () {
window.removeEventListener('keyup', this.handleKeyUp);
}
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getIndex () {
return this.state.index !== null ? this.state.index : this.props.index;
}
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render () {
const { media, intl, onClose } = this.props;
const index = this.getIndex();
const leftNav = media.size > 1 && <button tabIndex='0' className='modal-container__nav modal-container__nav--left' onClick={this.handlePrevClick} aria-label={intl.formatMessage(messages.previous)}><i className='fa fa-fw fa-chevron-left' /></button>;
const rightNav = media.size > 1 && <button tabIndex='0' className='modal-container__nav modal-container__nav--right' onClick={this.handleNextClick} aria-label={intl.formatMessage(messages.next)}><i className='fa fa-fw fa-chevron-right' /></button>;
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const content = media.map((image) => {
const width = image.getIn(['meta', 'original', 'width']) || null;
const height = image.getIn(['meta', 'original', 'height']) || null;
if (image.get('type') === 'image') {
return <ImageLoader previewSrc={image.get('preview_url')} src={image.get('url')} width={width} height={height} key={image.get('preview_url')} />;
} else if (image.get('type') === 'gifv') {
return <ExtendedVideoPlayer src={image.get('url')} muted controls={false} width={width} height={height} key={image.get('preview_url')} />;
}
return null;
}).toArray();
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return (
<div className='modal-root__modal media-modal'>
{leftNav}
<div className='media-modal__content'>
<IconButton className='media-modal__close' title={intl.formatMessage(messages.close)} icon='times' onClick={onClose} size={16} />
<ReactSwipeableViews onChangeIndex={this.handleSwipe} index={index} animateHeight>
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{content}
</ReactSwipeableViews>
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</div>
{rightNav}
</div>
);
}
}