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import * as _ from 'lodash';
import * as React from 'react';
import { PROGRESS_FINISH_ANIMATION_TIME_MS, PROGRESS_STALL_AT_WIDTH } from '../constants';
import { ColorOption, keyframes, styled } from '../style/theme';
import { Container } from './ui/container';
export interface TimedProgressBarProps {
expectedTimeMs: number;
hasEnded: boolean;
}
/**
* Timed Progress Bar
* Goes from 0% -> PROGRESS_STALL_AT_WIDTH over time of expectedTimeMs
* When hasEnded set to true, goes to 100% through animation of PROGRESS_FINISH_ANIMATION_TIME_MS length of time
*/
export class TimedProgressBar extends React.Component<TimedProgressBarProps, {}> {
private readonly _barRef = React.createRef<HTMLDivElement>();
public render(): React.ReactNode {
const timedProgressProps = this._calculateTimedProgressProps();
return (
<Container width="100%" backgroundColor={ColorOption.lightGrey} borderRadius="6px">
<TimedProgress {...timedProgressProps} ref={this._barRef as any} />
</Container>
);
}
private _calculateTimedProgressProps(): TimedProgressProps {
if (this.props.hasEnded) {
if (!this._barRef.current) {
throw new Error('ended but no reference');
}
const fromWidth = `${this._barRef.current.offsetWidth}px`;
return {
timeMs: PROGRESS_FINISH_ANIMATION_TIME_MS,
fromWidth,
toWidth: '100%',
};
}
return {
timeMs: this.props.expectedTimeMs,
fromWidth: '0px',
toWidth: PROGRESS_STALL_AT_WIDTH,
};
}
}
const expandingWidthKeyframes = (fromWidth: string, toWidth: string) => {
return keyframes`
from {
width: ${fromWidth};
}
to {
width: ${toWidth};
}
`;
};
interface TimedProgressProps {
timeMs: number;
fromWidth: string;
toWidth: string;
}
// TODO use PrimaryColor instead of black
export const TimedProgress =
styled.div <
TimedProgressProps >
`
background-color: black;
border-radius: 6px;
height: 6px;
animation: ${props => expandingWidthKeyframes(props.fromWidth, props.toWidth)}
${props => props.timeMs}ms linear 1 forwards;
`;
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