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// @flow
import * as React from 'react';
import { connect } from 'react-redux';
import { closeGallery } from 'src/actions/gallery';
import type { GetMediaMessagesForThreadType } from 'shared/graphql/queries/message/getMediaMessagesForThread';
import type { Dispatch } from 'redux';
import {
Overlay,
ActiveImage,
Minigallery,
MiniImg,
MiniContainer,
CloseButton,
GalleryWrapper,
} from './style';
import { ESC, ARROW_LEFT, ARROW_RIGHT } from 'src/helpers/keycodes';
type State = {
images: Array<Object>,
activeMessageId: string,
index: ?number,
};
type Props = {
dispatch: Dispatch<Object>,
data: {
messages?: GetMediaMessagesForThreadType,
},
activeMessageId: string,
};
class Browser extends React.Component<Props, State> {
constructor(props) {
super(props);
// if there are no messages found
if (!props.data.messages || props.data.messages.length === 0) {
this.state = {
images: [],
activeMessageId: props.activeMessageId,
index: null,
};
}
let index;
props.data.messages.map((message, i) => {
if (message.id === props.activeMessageId) {
index = i;
return message;
} else {
return message;
}
});
this.state = {
images: props.data.messages,
activeMessageId: props.activeMessageId,
index,
};
}
componentDidMount() {
// $FlowFixMe
document.addEventListener('keydown', this.handleKeyPress, false);
}
componentWillUnmount() {
// $FlowFixMe
document.removeEventListener('keydown', this.handleKeyPress, false);
}
closeGallery = () => {
this.props.dispatch(closeGallery());
};
handleKeyPress = e => {
const { images } = this.state;
// if no media, skip on outta here
if (!images) return;
if (e.keyCode === ESC) {
this.closeGallery();
}
if (e.keyCode === ARROW_LEFT) {
this.previousImage();
}
if (e.keyCode === ARROW_RIGHT) {
this.nextImage();
}
};
previousImage = () => {
let { index, images } = this.state;
if (index === null) return;
if (index === 0) {
index = images.length - 1;
this.setState({
index,
});
} else {
// $FlowFixMe
index -= 1;
this.setState({
index,
});
}
};
nextImage = () => {
let { index, images } = this.state;
if (index === images.length - 1) {
index = 0;
this.setState({
index,
});
} else {
index += 1;
this.setState({
index,
});
}
};
setCount = i => {
this.setState({
index: i,
});
};
render() {
const { images, index } = this.state;
const {
data: { messages },
} = this.props;
if (!messages || messages.length === 0) return null;
// when a user uploads an image, sometimes the resulting image doesn't get updated in the Apollo cache
// if it doesn't update in the cache, then the browser component will receive a bad `activeMessageId`
// prop. If it's the case that this happens, we just select the *last* image, assuming it's the one that the user just uploaded.
let filteredIndex = typeof index === 'number' ? index : messages.length - 1;
const src = `${images[filteredIndex].content.body}`;
return (
<GalleryWrapper>
<CloseButton onClick={this.closeGallery}>✕</CloseButton>
<Overlay onClick={this.closeGallery} onKeyDown={this.handleKeyPress} />
<ActiveImage onClick={this.nextImage} src={src} />
<Minigallery>
<MiniContainer>
{images.map((image, i) => {
return (
<MiniImg
src={`${image.content.body}`}
key={i}
onClick={() => this.setCount(i)}
active={i === filteredIndex}
/>
);
})}
</MiniContainer>
</Minigallery>
</GalleryWrapper>
);
}
}
export default connect()(Browser);
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