1 files changed, 308 insertions, 0 deletions
diff --git a/app/javascript/flavours/glitch/components/media_gallery.js b/app/javascript/flavours/glitch/components/media_gallery.js
new file mode 100644
index 000000000..3faf0b453
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+++ b/app/javascript/flavours/glitch/components/media_gallery.js
@@ -0,0 +1,308 @@
+import React from 'react';
+import ImmutablePropTypes from 'react-immutable-proptypes';
+import PropTypes from 'prop-types';
+import { is } from 'immutable';
+import IconButton from './icon_button';
+import { defineMessages, injectIntl, FormattedMessage } from 'react-intl';
+import { isIOS } from 'flavours/glitch/util/is_mobile';
+import classNames from 'classnames';
+import { autoPlayGif, displaySensitiveMedia } from 'flavours/glitch/util/initial_state';
+
+const messages = defineMessages({
+  hidden: {
+    defaultMessage: 'Media hidden',
+    id: 'status.media_hidden',
+  },
+  sensitive: {
+    defaultMessage: 'Sensitive',
+    id: 'media_gallery.sensitive',
+  },
+  toggle: {
+    defaultMessage: 'Click to view',
+    id: 'status.sensitive_toggle',
+  },
+  toggle_visible: {
+    defaultMessage: 'Toggle visibility',
+    id: 'media_gallery.toggle_visible',
+  },
+  warning: {
+    defaultMessage: 'Sensitive content',
+    id: 'status.sensitive_warning',
+  },
+});
+
+class Item extends React.PureComponent {
+
+  static propTypes = {
+    attachment: ImmutablePropTypes.map.isRequired,
+    standalone: PropTypes.bool,
+    index: PropTypes.number.isRequired,
+    size: PropTypes.number.isRequired,
+    letterbox: PropTypes.bool,
+    onClick: PropTypes.func.isRequired,
+    displayWidth: PropTypes.number,
+  };
+
+  static defaultProps = {
+    standalone: false,
+    index: 0,
+    size: 1,
+  };
+
+  handleMouseEnter = (e) => {
+    if (this.hoverToPlay()) {
+      e.target.play();
+    }
+  }
+
+  handleMouseLeave = (e) => {
+    if (this.hoverToPlay()) {
+      e.target.pause();
+      e.target.currentTime = 0;
+    }
+  }
+
+  hoverToPlay () {
+    const { attachment } = this.props;
+    return !autoPlayGif && attachment.get('type') === 'gifv';
+  }
+
+  handleClick = (e) => {
+    const { index, onClick } = this.props;
+
+    if (e.button === 0) {
+      e.preventDefault();
+      onClick(index);
+    }
+
+    e.stopPropagation();
+  }
+
+  render () {
+    const { attachment, index, size, standalone, letterbox, displayWidth } = this.props;
+
+    let width  = 50;
+    let height = 100;
+    let top    = 'auto';
+    let left   = 'auto';
+    let bottom = 'auto';
+    let right  = 'auto';
+
+    if (size === 1) {
+      width = 100;
+    }
+
+    if (size === 4 || (size === 3 && index > 0)) {
+      height = 50;
+    }
+
+    if (size === 2) {
+      if (index === 0) {
+        right = '2px';
+      } else {
+        left = '2px';
+      }
+    } else if (size === 3) {
+      if (index === 0) {
+        right = '2px';
+      } else if (index > 0) {
+        left = '2px';
+      }
+
+      if (index === 1) {
+        bottom = '2px';
+      } else if (index > 1) {
+        top = '2px';
+      }
+    } else if (size === 4) {
+      if (index === 0 || index === 2) {
+        right = '2px';
+      }
+
+      if (index === 1 || index === 3) {
+        left = '2px';
+      }
+
+      if (index < 2) {
+        bottom = '2px';
+      } else {
+        top = '2px';
+      }
+    }
+
+    let thumbnail = '';
+
+    if (attachment.get('type') === 'image') {
+      const previewUrl   = attachment.get('preview_url');
+      const previewWidth = attachment.getIn(['meta', 'small', 'width']);
+
+      const originalUrl    = attachment.get('url');
+      const originalWidth  = attachment.getIn(['meta', 'original', 'width']);
+
+      const hasSize = typeof originalWidth === 'number' && typeof previewWidth === 'number';
+
+      const srcSet = hasSize ? `${originalUrl} ${originalWidth}w, ${previewUrl} ${previewWidth}w` : null;
+      const sizes  = hasSize && (displayWidth > 0) ? `${displayWidth * (width / 100)}px` : null;
+
+      const focusX = attachment.getIn(['meta', 'focus', 'x']) || 0;
+      const focusY = attachment.getIn(['meta', 'focus', 'y']) || 0;
+      const x      = ((focusX /  2) + .5) * 100;
+      const y      = ((focusY / -2) + .5) * 100;
+
+      thumbnail = (
+        <a
+          className='media-gallery__item-thumbnail'
+          href={attachment.get('remote_url') || originalUrl}
+          onClick={this.handleClick}
+          target='_blank'
+        >
+          <img
+            className={letterbox ? 'letterbox' : null}
+            src={previewUrl}
+            srcSet={srcSet}
+            sizes={sizes}
+            alt={attachment.get('description')}
+            title={attachment.get('description')}
+            style={{ objectPosition: `${x}% ${y}%` }} />
+        </a>
+      );
+    } else if (attachment.get('type') === 'gifv') {
+      const autoPlay = !isIOS() && autoPlayGif;
+
+      thumbnail = (
+        <div className={classNames('media-gallery__gifv', { autoplay: autoPlay })}>
+          <video
+            className={`media-gallery__item-gifv-thumbnail${letterbox ? ' letterbox' : ''}`}
+            aria-label={attachment.get('description')}
+            title={attachment.get('description')}
+            role='application'
+            src={attachment.get('url')}
+            onClick={this.handleClick}
+            onMouseEnter={this.handleMouseEnter}
+            onMouseLeave={this.handleMouseLeave}
+            autoPlay={autoPlay}
+            loop
+            muted
+          />
+
+          <span className='media-gallery__gifv__label'>GIF</span>
+        </div>
+      );
+    }
+
+    return (
+      <div className={classNames('media-gallery__item', { standalone })} key={attachment.get('id')} style={{ left: left, top: top, right: right, bottom: bottom, width: `${width}%`, height: `${height}%` }}>
+        {thumbnail}
+      </div>
+    );
+  }
+
+}
+
+@injectIntl
+export default class MediaGallery extends React.PureComponent {
+
+  static propTypes = {
+    sensitive: PropTypes.bool,
+    revealed: PropTypes.bool,
+    standalone: PropTypes.bool,
+    letterbox: PropTypes.bool,
+    fullwidth: PropTypes.bool,
+    media: ImmutablePropTypes.list.isRequired,
+    size: PropTypes.object,
+    onOpenMedia: PropTypes.func.isRequired,
+    intl: PropTypes.object.isRequired,
+  };
+
+  static defaultProps = {
+    standalone: false,
+  };
+
+  state = {
+    visible: this.props.revealed === undefined ? (!this.props.sensitive || displaySensitiveMedia) : this.props.revealed,
+  };
+
+  componentWillReceiveProps (nextProps) {
+    if (!is(nextProps.media, this.props.media)) {
+      this.setState({ visible: !nextProps.sensitive });
+    }
+  }
+
+  handleOpen = () => {
+    this.setState({ visible: !this.state.visible });
+  }
+
+  handleClick = (index) => {
+    this.props.onOpenMedia(this.props.media, index);
+  }
+
+  handleRef = (node) => {
+    if (node /*&& this.isStandaloneEligible()*/) {
+      // offsetWidth triggers a layout, so only calculate when we need to
+      this.setState({
+        width: node.offsetWidth,
+      });
+    }
+  }
+
+  isStandaloneEligible() {
+    const { media, standalone } = this.props;
+    return standalone && media.size === 1 && media.getIn([0, 'meta', 'small', 'aspect']);
+  }
+
+  render () {
+    const { media, intl, sensitive, letterbox, fullwidth } = this.props;
+    const { width, visible } = this.state;
+    const size = media.take(4).size;
+
+    let children;
+
+    const style = {};
+
+    if (this.isStandaloneEligible() && width) {
+      style.height = width / this.props.media.getIn([0, 'meta', 'small', 'aspect']);
+    }
+
+    if (!visible) {
+      let warning = <FormattedMessage {...(sensitive ? messages.warning : messages.hidden)} />;
+
+      children = (
+        <button className='media-spoiler' type='button' onClick={this.handleOpen}>
+          <span className='media-spoiler__warning'>{warning}</span>
+          <span className='media-spoiler__trigger'><FormattedMessage {...messages.toggle} /></span>
+        </button>
+      );
+    } else {
+      if (this.isStandaloneEligible()) {
+        children = <Item standalone attachment={media.get(0)} onClick={this.handleClick} displayWidth={width} />;
+      } else {
+        children = media.take(4).map((attachment, i) => <Item key={attachment.get('id')} onClick={this.handleClick} attachment={attachment} index={i} size={size} letterbox={letterbox} displayWidth={width} />);
+      }
+    }
+
+    const computedClass = classNames('media-gallery', `size-${size}`, { 'full-width': fullwidth });
+
+    return (
+      <div className={computedClass} style={style} ref={this.handleRef}>
+        {visible ? (
+          <div className='sensitive-info'>
+            <IconButton
+              icon='eye'
+              onClick={this.handleOpen}
+              overlay
+              title={intl.formatMessage(messages.toggle_visible)}
+            />
+            {sensitive ? (
+              <span className='sensitive-marker'>
+                <FormattedMessage {...messages.sensitive} />
+              </span>
+            ) : null}
+          </div>
+        ) : null}
+
+        {children}
+      </div>
+    );
+  }
+
+}