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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, css, 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 widthAnimationSettings = this._calculateWidthAnimationSettings();
return <ProgressBar animationSettings={widthAnimationSettings} ref={this._barRef} />;
}
private _calculateWidthAnimationSettings(): WidthAnimationSettings {
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};
}
`;
};
export interface WidthAnimationSettings {
timeMs: number;
fromWidth: string;
toWidth: string;
}
interface ProgressProps {
width?: string;
animationSettings?: WidthAnimationSettings;
}
export const Progress =
styled.div <
ProgressProps >
`
&& {
background-color: ${props => props.theme[ColorOption.primaryColor]};
border-radius: 6px;
height: 6px;
${props => (props.width ? `width: ${props.width};` : '')}
${props =>
props.animationSettings
? css`
animation: ${expandingWidthKeyframes(
props.animationSettings.fromWidth,
props.animationSettings.toWidth,
)}
${props.animationSettings.timeMs}ms linear 1 forwards;
`
: ''}
}
`;
export interface ProgressBarProps extends ProgressProps {}
export const ProgressBar: React.ComponentType<ProgressBarProps & React.ClassAttributes<{}>> = React.forwardRef(
(props, ref) => (
<Container width="100%" backgroundColor={ColorOption.lightGrey} borderRadius="6px">
<Progress {...props} ref={ref as any} />
</Container>
),
);
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