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import clsx from 'clsx';
import PropTypes from 'prop-types';
import { PureComponent } from 'react';
import ChartBarTooltip from './bar-tooltip';
export default class ChartBar extends PureComponent {
static propTypes = {
className: PropTypes.string,
clickHandler: PropTypes.func,
count: PropTypes.number,
data: PropTypes.object.isRequired,
isTouch: PropTypes.bool,
max: PropTypes.number,
tooltipPosition: PropTypes.string,
};
static defaultProps = {
max: Infinity,
};
clickHandler = () => {
if ( typeof this.props.clickHandler === 'function' ) {
this.props.clickHandler( this.props.data );
}
};
computeTooltipPosition() {
const { chartWidth, index, count } = this.props;
const barWidth = chartWidth / count;
const barOffset = barWidth * ( index + 1 );
const shouldFlip = barOffset > chartWidth - 230 && barOffset + barWidth > 230;
return shouldFlip ? 'bottom left' : 'bottom right';
}
mouseEnter = () => {
if (
! this.props.data.tooltipData ||
! this.props.data.tooltipData.length ||
this.props.isTouch
) {
return null;
}
this.props.setTooltip( this.bar, this.computeTooltipPosition(), this.getTooltipData() );
};
mouseLeave = () => {
this.props.setTooltip( null );
};
getTooltipData() {
return this.props.data.tooltipData.map( function ( options, i ) {
return <ChartBarTooltip key={ i } { ...options } />;
} );
}
getScaleY() {
const scaleY = this.props.data.value / this.props.max;
// Hack: We use an invisible but non-zero value here, becaue zero scaleY-ed bars grows to max and then disappear when combined with container animation on initialization in Chrome.
return scaleY < 1e-4 ? '0.0001' : scaleY.toFixed( 4 );
}
getNestedPercentage() {
const {
data: { nestedValue, value },
} = this.props;
return value && nestedValue ? Math.ceil( ( nestedValue / value ) * 10000 ) / 100 : 0;
}
setRef = ( ref ) => ( this.bar = ref );
renderNestedBar() {
const {
data: { nestedValue },
} = this.props;
return (
nestedValue && (
<div
key="nestedValue"
className="chart__bar-section-inner"
style={ { height: `${ this.getNestedPercentage() }%` } }
/>
)
);
}
renderBar() {
return (
<div
ref={ this.setRef }
key="value"
className="chart__bar-section is-bar"
style={ { transform: `scaleY( ${ this.getScaleY() } )` } }
>
{ this.renderNestedBar() }
</div>
);
}
render() {
return (
<div
role="presentation"
aria-hidden="true"
onClick={ this.clickHandler }
onMouseEnter={ this.mouseEnter }
onMouseLeave={ this.mouseLeave }
className={ clsx( 'chart__bar', this.props.className ) }
>
{ this.renderBar() }
<div key="label" className="chart__bar-label">
{ this.props.label }
</div>
<div className="chart__bar-marker is-hundred" />
<div className="chart__bar-marker is-fifty" />
<div className="chart__bar-marker is-zero" />
</div>
);
}
}
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