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58x 65x 65x 65x 65x 293x 293x 1x 1x 293x 65x 4x 1x 1x 4x 65x 65x 58x 92x 92x 92x 58x 1119x 58x 683x 58x 217x 217x 217x 217x 217x 217x 22x 216x 21x 195x 58x 92x 92x 92x 9x 9x 9x 9x 9x 9x 3x 414x 83x 83x 92x 22x 65x 293x 22x | import * as React from 'react';
import { max as d3Max, min as d3Min } from 'd3-array';
import { line as d3Line } from 'd3-shape';
import { select as d3Select } from 'd3-selection';
import {
scaleLinear as d3ScaleLinear,
ScaleLinear as D3ScaleLinear,
scaleBand as d3ScaleBand,
scaleUtc as d3ScaleUtc,
} from 'd3-scale';
import { classNamesFunction, getId, getRTL } from '@fluentui/react/lib/Utilities';
import { IProcessedStyleSet, IPalette } from '@fluentui/react/lib/Styling';
import { DirectionalHint } from '@fluentui/react/lib/Callout';
import {
IAccessibilityProps,
CartesianChart,
ChartHoverCard,
IBasestate,
IMargins,
ILegend,
IRefArrayData,
IVerticalBarChartProps,
IVerticalBarChartStyleProps,
IVerticalBarChartStyles,
IVerticalBarChartDataPoint,
Legends,
IChildProps,
IYValueHover,
} from '../../index';
import { FocusZoneDirection } from '@fluentui/react-focus';
import {
ChartTypes,
IAxisData,
getAccessibleDataObject,
XAxisTypes,
NumericAxis,
getTypeOfAxis,
tooltipOfXAxislabels,
formatValueWithSIPrefix,
getBarWidth,
getScalePadding,
isScalePaddingDefined,
calculateAppropriateBarWidth,
} from '../../utilities/index';
enum CircleVisbility {
show = 'visibility',
hide = 'hidden',
}
const getClassNames = classNamesFunction<IVerticalBarChartStyleProps, IVerticalBarChartStyles>();
const MIN_DOMAIN_MARGIN = 8;
export interface IVerticalBarChartState extends IBasestate {
dataPointCalloutProps?: IVerticalBarChartDataPoint; // define this in hover and focus
/**
* data point of x, where rectangle is hovered or focused
*/
activeXdataPoint: number | string | Date | null;
YValueHover: IYValueHover[];
hoverXValue?: string | number | null;
callOutAccessibilityData?: IAccessibilityProps;
calloutLegend: string;
}
type ColorScale = (_p?: number) => string;
export class VerticalBarChartBase extends React.Component<IVerticalBarChartProps, IVerticalBarChartState> {
public static defaultProps: Partial<IVerticalBarChartProps> = {
maxBarWidth: 24,
};
private _points: IVerticalBarChartDataPoint[];
private _barWidth: number;
private _colors: string[];
private _classNames: IProcessedStyleSet<IVerticalBarChartStyles>;
private _refArray: IRefArrayData[];
private _calloutId: string;
private margins: IMargins;
private _isRtl: boolean = getRTL();
private _bars: JSX.Element[];
private _xAxisLabels: string[];
private _yMax: number;
private _isHavingLine: boolean;
private _tooltipId: string;
private _xAxisType: XAxisTypes;
private _calloutAnchorPoint: IVerticalBarChartDataPoint | null;
private _domainMargin: number;
private _emptyChartId: string;
private _xAxisInnerPadding: number;
private _xAxisOuterPadding: number;
public constructor(props: IVerticalBarChartProps) {
super(props);
this.state = {
color: '',
dataForHoverCard: 0,
isCalloutVisible: false,
refSelected: null,
selectedLegend: '',
activeLegend: '',
xCalloutValue: '',
yCalloutValue: '',
activeXdataPoint: null,
YValueHover: [],
hoverXValue: '',
calloutLegend: '',
};
this._isHavingLine = this._checkForLine();
this._calloutId = getId('callout');
this._tooltipId = getId('VCTooltipID_');
this._refArray = [];
this._xAxisType =
this.props.data! && this.props.data!.length > 0
? (getTypeOfAxis(this.props.data![0].x, true) as XAxisTypes)
: XAxisTypes.StringAxis;
this._emptyChartId = getId('_VBC_empty');
}
public render(): JSX.Element {
this._adjustProps();
this._xAxisLabels = this._points.map((point: IVerticalBarChartDataPoint) => point.x as string);
this._yMax = Math.max(
d3Max(this._points, (point: IVerticalBarChartDataPoint) => point.y)!,
this.props.yMaxValue || 0,
);
const legendBars: JSX.Element = this._getLegendData(this._points, this.props.theme!.palette);
this._classNames = getClassNames(this.props.styles!, {
theme: this.props.theme!,
legendColor: this.state.color,
});
const calloutProps = {
isCalloutVisible: this.state.isCalloutVisible,
directionalHint: DirectionalHint.topAutoEdge,
id: `toolTip${this._calloutId}`,
target: this.state.refSelected,
isBeakVisible: false,
...(this._isHavingLine && {
YValueHover: this.state.YValueHover,
hoverXValue: this.state.hoverXValue,
}),
gapSpace: 15,
color: this.state.color,
legend: this.state.calloutLegend,
XValue: this.state.xCalloutValue,
YValue: this.state.yCalloutValue ? this.state.yCalloutValue : this.state.dataForHoverCard,
onDismiss: this._closeCallout,
preventDismissOnLostFocus: true,
...this.props.calloutProps,
...getAccessibleDataObject(this.state.callOutAccessibilityData),
};
const tickParams = {
tickValues: this.props.tickValues,
tickFormat: this.props.tickFormat,
};
return !this._isChartEmpty() ? (
<CartesianChart
{...this.props}
points={this._points}
chartType={ChartTypes.VerticalBarChart}
xAxisType={this._xAxisType}
calloutProps={calloutProps}
tickParams={tickParams}
{...(this._isHavingLine && this._noLegendHighlighted() && { isCalloutForStack: true })}
legendBars={legendBars}
datasetForXAxisDomain={this._xAxisLabels}
barwidth={this._barWidth}
focusZoneDirection={FocusZoneDirection.horizontal}
customizedCallout={this._getCustomizedCallout()}
getmargins={this._getMargins}
getGraphData={this._getGraphData}
getAxisData={this._getAxisData}
onChartMouseLeave={this._handleChartMouseLeave}
getDomainMargins={this._getDomainMargins}
{...(this._xAxisType === XAxisTypes.StringAxis && {
xAxisInnerPadding: this._xAxisInnerPadding,
xAxisOuterPadding: this._xAxisOuterPadding,
})}
/* eslint-disable react/jsx-no-bind */
// eslint-disable-next-line react/no-children-prop
children={(props: IChildProps) => {
return (
<>
<g>{this._bars}</g>
{this._isHavingLine && (
<g>
{this._createLine(
props.xScale!,
props.yScale!,
props.containerHeight,
props.containerWidth,
props.yScaleSecondary,
)}
</g>
)}
</>
);
}}
/>
) : (
<div
id={this._emptyChartId}
role={'alert'}
style={{ opacity: '0' }}
aria-label={'Graph has no data to display'}
/>
);
}
private _createLine = (
// eslint-disable-next-line @typescript-eslint/no-explicit-any
xScale: any,
// eslint-disable-next-line @typescript-eslint/no-explicit-any
yScale: any,
IcontainerHeight: number = 0,
IcontainerWidth: number = 0,
// eslint-disable-next-line @typescript-eslint/no-explicit-any
yScaleSecondary?: any,
): React.ReactNode => {
const isStringAxis = this._xAxisType === XAxisTypes.StringAxis;
const { xBarScale } = this._getScales(containerHeight, containerWidth);
const colorScale = this._createColors();
const { theme } = this.props;
const { data, lineLegendColor = theme!.palette.yellow, lineLegendText } = this.props;
// eslint-disable-next-line @typescript-eslint/no-explicit-any
const lineData: Array<any> = [];
const line: JSX.Element[] = [];
data &&
data.forEach((item: IVerticalBarChartDataPoint, index: number) => {
if (item.lineData && item.lineData.y) {
lineData.push({
x: item.x,
y: item.lineData!.y,
useSecondaryYScale: item.lineData!.useSecondaryYScale ?? false,
point: item,
index,
});
}
});
const linePath = d3Line()
// eslint-disable-next-line @typescript-eslint/no-explicit-any
.x((d: any) => (isStringAxis ? xBarScale(d.x) + 0.5 * xBarScale.bandwidth() : xScale(d.x)))
// eslint-disable-next-line @typescript-eslint/no-explicit-any
.y((d: any) => (d.useSecondaryYScale && yScaleSecondary ? yScaleSecondary(d.y) : yScale(d.y)));
const shouldHighlight = this._legendHighlighted(lineLegendText!) || this._noLegendHighlighted() ? true : false;
const lineBorderWidth = this.props.lineOptions?.lineBorderWidth
? Number.parseFloat(this.props.lineOptions!.lineBorderWidth!.toString())
: 0;
Iif (lineBorderWidth > 0) {
line.push(
<path
key={getId('_VBC_line_')}
id={getId('_VBC_line_')}
opacity={shouldHighlight ? 1 : 0.1}
d={linePath(lineData)!}
fill="transparent"
strokeLinecap="square"
strokeWidth={3 + lineBorderWidth * 2}
stroke={theme!.semanticColors.bodyBackground}
/>,
);
}
line.push(
<path
key={getId('_VBC_line_')}
id={getId('_VBC_line_')}
opacity={shouldHighlight ? 1 : 0.1}
d={linePath(lineData)!}
fill="transparent"
strokeLinecap="square"
strokeWidth={3}
stroke={lineLegendColor}
/>,
);
const dots: React.ReactNode[] = lineData.map(
(
item: {
x: number | string;
y: number;
useSecondaryYScale: boolean;
point: IVerticalBarChartDataPoint;
index: number;
},
index: number,
) => {
// Create an object to store line point ref so that the object can be passed by reference to the focus handler
const circleRef: { refElement: SVGCircleElement | null } = { refElement: null };
return (
<circle
key={index}
id={getId('_VBC_point_')}
cx={isStringAxis ? xBarScale(item.x) + 0.5 * xBarScale.bandwidth() : xScale(item.x)}
cy={item.useSecondaryYScale && yScaleSecondary ? yScaleSecondary(item.y) : yScale(item.y)}
onMouseOver={
this._legendHighlighted(lineLegendText!)
? this._lineHover.bind(this, item.point)
: this._onBarHover.bind(this, item.point, colorScale(item.y))
}
onMouseOut={this._onBarLeave}
r={this._getCircleVisibilityAndRadius(item.x, lineLegendText!).radius}
stroke={lineLegendColor}
fill={this.props.theme!.semanticColors.bodyBackground}
strokeWidth={3}
visibility={this._getCircleVisibilityAndRadius(item.x, lineLegendText!).visibility}
onClick={item.point.lineData?.onClick}
// When no legend is highlighted: Line points are automatically displayed along with the bars
// at the same x-axis point in the stack callout. So to prevent an increase in focusable elements
// and avoid conveying duplicate info, make these line points non-focusable.
data-is-focusable={this._legendHighlighted(lineLegendText!)}
ref={e => (circleRef.refElement = e)}
onFocus={this._lineFocus.bind(this, item.point, circleRef)}
onBlur={this._handleChartMouseLeave}
/>
);
},
);
return (
<>
{line}
{dots}
</>
);
};
private _getCircleVisibilityAndRadius = (
xAxisPoint: string | number | Date,
legend: string,
): { visibility: CircleVisbility; radius: number } => {
const { selectedLegend, activeXdataPoint } = this.state;
Iif (selectedLegend !== '') {
if (xAxisPoint === activeXdataPoint && selectedLegend === legend) {
return { visibility: CircleVisbility.show, radius: 8 };
} else if (selectedLegend === legend) {
// Don't hide the circle to keep it focusable. For more information,
// see https://fuzzbomb.github.io/accessibility-demos/visually-hidden-focus-test.html
return { visibility: CircleVisbility.show, radius: 0.3 };
} else {
return { visibility: CircleVisbility.hide, radius: 0 };
}
} else {
return {
visibility: activeXdataPoint === xAxisPoint ? CircleVisbility.show : CircleVisbility.hide,
radius: 8,
};
}
};
private _checkForLine = (): boolean => {
const { data } = this.props;
return data!.some((item: IVerticalBarChartDataPoint) => item?.lineData?.y !== undefined);
};
private _adjustProps(): void {
this._points = this.props.data || [];
this._barWidth = getBarWidth(this.props.barWidth, this.props.maxBarWidth);
const { palette } = this.props.theme!;
this._colors = this.props.colors || [palette.blueLight, palette.blue, palette.blueMid, palette.blueDark];
this._isHavingLine = this._checkForLine();
this._xAxisInnerPadding = getScalePadding(this.props.xAxisInnerPadding, this.props.xAxisPadding, 2 / 3);
this._xAxisOuterPadding = getScalePadding(this.props.xAxisOuterPadding, this.props.xAxisPadding, 0);
}
private _getMargins = (margins: IMargins) => {
this.margins = margins;
};
private _renderContentForBothLineAndBars = (point: IVerticalBarChartDataPoint): JSX.Element => {
const { YValueHover, hoverXValue } = this._getCalloutContentForLineAndBar(point);
const content: JSX.Element[] = YValueHover.map((item: IYValueHover, index: number) => {
return (
<ChartHoverCard
key={index}
Legend={item.legend}
{...(index === 0 && { XValue: `${hoverXValue || item.data}` })}
color={item.color}
YValue={item.data || item.y}
culture={this.props.culture}
/>
);
});
return <>{content}</>;
};
private _renderContentForOnlyBars = (props: IVerticalBarChartDataPoint): JSX.Element => {
const { useSingleColor = false } = this.props;
return (
<>
<ChartHoverCard
XValue={props.xAxisCalloutData || (props.x as string)}
Legend={props.legend}
YValue={props.yAxisCalloutData || props.y}
color={!useSingleColor && props.color ? props.color : this._createColors()(props.y)}
culture={this.props.culture}
/>
</>
);
};
private _renderCallout = (props?: IVerticalBarChartDataPoint): JSX.Element | null => {
return props
? this._isHavingLine
? this._renderContentForBothLineAndBars(props)
: this._renderContentForOnlyBars(props)
: null;
};
private _getCustomizedCallout = () => {
return this.props.onRenderCalloutPerDataPoint
? this.props.onRenderCalloutPerDataPoint(this.state.dataPointCalloutProps, this._renderCallout)
: null;
};
private _getGraphData = (
// eslint-disable-next-line @typescript-eslint/no-explicit-any
xScale: any,
yScale: NumericAxis,
containerHeight: number,
containerWidth: number,
xElement?: SVGElement | null,
) => {
return (this._bars =
this._xAxisType === XAxisTypes.NumericAxis
? this._createNumericBars(containerHeight, containerWidth, xElement!)
: this._xAxisType === XAxisTypes.DateAxis
? this._createDateBars(containerHeight, containerWidth, xElement!)
: this._createStringBars(containerHeight, containerWidth, xElement!));
};
private _createColors(): D3ScaleLinear<string, string> | ColorScale {
const increment = this._colors.length <= 1 ? 1 : 1 / (this._colors.length - 1);
const { useSingleColor = false } = this.props;
if (useSingleColor) {
return (_p?: number) => {
const { theme, colors } = this.props;
return colors && colors.length > 0 ? colors[0] : theme!.palette.blueLight;
};
}
const domainValues = [];
for (let i = 0; i < this._colors.length; i++) {
domainValues.push(increment * i * this._yMax);
}
const colorScale = d3ScaleLinear<string>().domain(domainValues).range(this._colors);
return colorScale;
}
private _refCallback = (element: SVGRectElement, legendTitle: string): void => {
this._refArray.push({ index: legendTitle, refElement: element });
};
private _getCalloutContentForLineAndBar = (
point: IVerticalBarChartDataPoint,
): { YValueHover: IYValueHover[]; hoverXValue: string | number | null } => {
const YValueHover: IYValueHover[] = [];
const { theme, useSingleColor = false } = this.props;
const { data, lineLegendText, lineLegendColor = theme!.palette.yellow } = this.props;
const selectedPoint = data!.filter((xDataPoint: IVerticalBarChartDataPoint) => xDataPoint.x === point.x);
// there might be no y value of the line for the hovered bar. so we need to check this condition
if (this._isHavingLine && selectedPoint[0].lineData?.y !== undefined) {
// callout data for the line
YValueHover.push({
legend: lineLegendText,
color: lineLegendColor,
y: selectedPoint[0].lineData?.y,
data: selectedPoint[0].lineData?.yAxisCalloutData,
yAxisCalloutData: selectedPoint[0].lineData?.yAxisCalloutData,
});
}
// callout data for the bar
YValueHover.push({
legend: selectedPoint[0].legend,
y: selectedPoint[0].y,
color: !useSingleColor
? selectedPoint[0].color
? selectedPoint[0].color
: this._createColors()(selectedPoint[0].y)
: this._createColors()(1),
data: selectedPoint[0].yAxisCalloutData,
yAxisCalloutData: selectedPoint[0].yAxisCalloutData,
});
const hoverXValue = point.x instanceof Date ? point.x.toLocaleString() : point.x.toString();
return {
YValueHover,
hoverXValue: point.xAxisCalloutData || hoverXValue,
};
};
private _onBarHover(
point: IVerticalBarChartDataPoint,
color: string,
mouseEvent: React.MouseEvent<SVGElement>,
): void {
mouseEvent.persist();
const { YValueHover, hoverXValue } = this._getCalloutContentForLineAndBar(point);
if (this._calloutAnchorPoint !== point) {
this._calloutAnchorPoint = point;
this.setState({
refSelected: mouseEvent,
/** Show the callout if highlighted bar is hovered and Hide it if unhighlighted bar is hovered */
isCalloutVisible: this.state.selectedLegend === '' || this.state.selectedLegend === point.legend,
dataForHoverCard: point.y,
calloutLegend: point.legend!,
color: point.color || color,
// To display callout value, if no callout value given, taking given point.x value as a string.
xCalloutValue:
point.xAxisCalloutData || (point.x instanceof Date ? point.x.toLocaleDateString() : point.x.toString()),
yCalloutValue: point.yAxisCalloutData!,
dataPointCalloutProps: point,
// Hovering over a bar should highlight corresponding line points only when no legend is selected
activeXdataPoint: this._noLegendHighlighted() ? point.x : null,
YValueHover,
hoverXValue,
callOutAccessibilityData: point.callOutAccessibilityData,
});
}
}
private _onBarLeave = (): void => {
/**/
};
private _handleChartMouseLeave = (): void => {
this._calloutAnchorPoint = null;
this.setState({
isCalloutVisible: false,
activeXdataPoint: null,
YValueHover: [],
hoverXValue: '',
});
};
private _onBarFocus = (point: IVerticalBarChartDataPoint, refArrayIndexNumber: number, color: string): void => {
const { YValueHover, hoverXValue } = this._getCalloutContentForLineAndBar(point);
this._refArray.forEach((obj: IRefArrayData, index: number) => {
Iif (obj.index === point.legend! && refArrayIndexNumber === index) {
this.setState({
refSelected: obj.refElement,
/** Show the callout if highlighted bar is focused and Hide it if unhighlighted bar is focused */
isCalloutVisible: this.state.selectedLegend === '' || this.state.selectedLegend === point.legend,
calloutLegend: point.legend!,
dataForHoverCard: point.y,
color: point.color || color,
xCalloutValue:
point.xAxisCalloutData || (point.x instanceof Date ? point.x.toLocaleDateString() : point.x.toString()),
yCalloutValue: point.yAxisCalloutData!,
dataPointCalloutProps: point,
activeXdataPoint: point.x,
YValueHover,
hoverXValue,
callOutAccessibilityData: point.callOutAccessibilityData,
});
}
});
};
private _lineHover = (point: IVerticalBarChartDataPoint, mouseEvent: React.MouseEvent<SVGElement>) => {
mouseEvent.persist();
this._lineHoverFocus(point, mouseEvent);
};
private _lineFocus = (point: IVerticalBarChartDataPoint, ref: { refElement: SVGCircleElement | null }) => {
Iif (ref.refElement) {
this._lineHoverFocus(point, ref.refElement);
}
};
private _lineHoverFocus = (
point: IVerticalBarChartDataPoint,
refSelected: React.MouseEvent<SVGElement> | SVGCircleElement,
) => {
const { theme } = this.props;
const { lineLegendText = '', lineLegendColor = theme!.palette.yellow } = this.props;
this.setState({
refSelected,
isCalloutVisible: true,
calloutLegend: lineLegendText,
dataForHoverCard: point.lineData!.y,
color: lineLegendColor,
xCalloutValue:
point.xAxisCalloutData || (point.x instanceof Date ? point.x.toLocaleDateString() : point.x.toString()),
yCalloutValue: point.lineData!.yAxisCalloutData,
dataPointCalloutProps: point,
activeXdataPoint: point.x,
});
};
private _getScales = (
containerHeight: number,
containerWidth: number,
// eslint-disable-next-line @typescript-eslint/no-explicit-any
): { xBarScale: any; yBarScale: any } => {
// eslint-disable-next-line @typescript-eslint/no-explicit-any
let xBarScale: any;
// eslint-disable-next-line @typescript-eslint/no-explicit-any
const yBarScale: any = d3ScaleLinear()
.domain([0, this._yMax])
.range([0, containerHeight - this.margins.bottom! - this.margins.top!]);
if (this._xAxisType === XAxisTypes.NumericAxis) {
const xMax = d3Max(this._points, (point: IVerticalBarChartDataPoint) => point.x as number)!;
const xMin = d3Min(this._points, (point: IVerticalBarChartDataPoint) => point.x as number)!;
xBarScale = d3ScaleLinear()
.domain(this._isRtl ? [xMax, xMin] : [xMin, xMax])
.nice()
.range([this.margins.left! + this._domainMargin, containerWidth - this.margins.right! - this._domainMargin]);
} else if (this._xAxisType === XAxisTypes.DateAxis) {
const sDate = d3Min(this._points, (point: IVerticalBarChartDataPoint) => point.x as Date)!;
const lDate = d3Max(this._points, (point: IVerticalBarChartDataPoint) => point.x as Date)!;
xBarScale = d3ScaleUtc()
.domain([sDate, lDate])
.range(
this._isRtl
? [containerWidth - this.margins.right! - this._domainMargin, this.margins.left! + this._domainMargin]
: [this.margins.left! + this._domainMargin, containerWidth - this.margins.right! - this._domainMargin],
);
} else {
xBarScale = d3ScaleBand()
.domain(this._xAxisLabels)
.range(
this._isRtl
? [containerWidth - this.margins.right! - this._domainMargin, this.margins.left! + this._domainMargin]
: [this.margins.left! + this._domainMargin, containerWidth - this.margins.right! - this._domainMargin],
)
.paddingInner(this._xAxisInnerPadding)
.paddingOuter(this._xAxisOuterPadding);
}
return { xBarScale, yBarScale };
};
private _createNumericBars(containerHeight: number, containerWidth: number, xElement: SVGElement): JSX.Element[] {
const { useSingleColor = false } = this.props;
const { xBarScale, yBarScale } = this._getScales(containerHeight, containerWidth);
const colorScale = this._createColors();
const bars = this._points.map((point: IVerticalBarChartDataPoint, index: number) => {
const shouldHighlight = this._legendHighlighted(point.legend!) || this._noLegendHighlighted() ? true : false;
this._classNames = getClassNames(this.props.styles!, {
theme: this.props.theme!,
legendColor: this.state.color,
shouldHighlight,
});
const barHeight: number = Math.max(yBarScale(point.y), 0);
let adjustedBarHeight = 0;
if (barHeight <= 0) {
return <React.Fragment key={point.x as string}> </React.Fragment>;
} else Iif (barHeight <= Math.ceil(yBarScale(this._yMax) / 100.0)) {
adjustedBarHeight = Math.ceil(yBarScale(this._yMax) / 100.0);
} else {
adjustedBarHeight = barHeight;
}
const xPoint = xBarScale(point.x as number) - this._barWidth / 2;
const yPoint = containerHeight - this.margins.bottom! - adjustedBarHeight;
return (
<g key={point.x as string}>
<rect
id={getId('_VBC_bar_')}
x={xPoint}
className={this._classNames.opacityChangeOnHover}
y={yPoint}
width={this._barWidth}
data-is-focusable={!this.props.hideTooltip && shouldHighlight}
height={adjustedBarHeight}
ref={(e: SVGRectElement) => {
this._refCallback(e, point.legend!);
}}
onClick={point.onClick}
onMouseOver={this._onBarHover.bind(this, point, colorScale(point.y))}
aria-label={this._getAriaLabel(point)}
role="img"
onMouseLeave={this._onBarLeave}
onFocus={this._onBarFocus.bind(this, point, index, colorScale(point.y))}
onBlur={this._onBarLeave}
fill={point.color && !useSingleColor ? point.color : colorScale(point.y)}
/>
{this._renderBarLabel(xPoint, yPoint, point.y, point.legend!)}
</g>
);
});
// Removing un wanted tooltip div from DOM, when prop not provided.
if (!this.props.showXAxisLablesTooltip) {
try {
document.getElementById(this._tooltipId) && document.getElementById(this._tooltipId)!.remove();
// eslint-disable-next-line no-empty
} catch (e) {}
}
// Used to display tooltip at x axis labels.
if (!this.props.wrapXAxisLables && this.props.showXAxisLablesTooltip) {
const xAxisElement = d3Select(xElement).call(xBarScale);
try {
document.getElementById(this._tooltipId) && document.getElementById(this._tooltipId)!.remove();
// eslint-disable-next-line no-empty
} catch (e) {}
const tooltipProps = {
tooltipCls: this._classNames.tooltip!,
id: this._tooltipId,
xAxis: xAxisElement,
};
xAxisElement && tooltipOfXAxislabels(tooltipProps);
}
return bars;
}
private _createStringBars(containerHeight: number, containerWidth: number, xElement: SVGElement): JSX.Element[] {
const { xBarScale, yBarScale } = this._getScales(containerHeight, containerWidth);
const colorScale = this._createColors();
const bars = this._points.map((point: IVerticalBarChartDataPoint, index: number) => {
const barHeight: number = Math.max(yBarScale(point.y), 0);
let adjustedBarHeight = 0;
if (barHeight <= 0) {
return <React.Fragment key={point.x instanceof Date ? point.x.getTime() : point.x}> </React.Fragment>;
} else Iif (barHeight <= Math.ceil(yBarScale(this._yMax) / 100.0)) {
adjustedBarHeight = Math.ceil(yBarScale(this._yMax) / 100.0);
} else {
adjustedBarHeight = barHeight;
}
const xPoint = xBarScale(point.x);
const yPoint = containerHeight - this.margins.bottom! - adjustedBarHeight;
// Setting the bar width here is safe because there are no dependencies earlier in the code
// that rely on the width of bars in vertical bar charts with string x-axis.
this._barWidth = getBarWidth(this.props.barWidth, this.props.maxBarWidth, xBarScale.bandwidth());
return (
<g
key={point.x instanceof Date ? point.x.getTime() : point.x}
transform={`translate(${0.5 * (xBarScale.bandwidth() - this._barWidth)}, 0)`}
>
<rect
id={getId('_VBC_bar_')}
x={xPoint}
y={yPoint}
width={this._barWidth}
height={adjustedBarHeight}
aria-label={this._getAriaLabel(point)}
role="img"
ref={(e: SVGRectElement) => {
this._refCallback(e, point.legend!);
}}
onClick={point.onClick}
onMouseOver={this._onBarHover.bind(this, point, colorScale(point.y))}
onMouseLeave={this._onBarLeave}
onBlur={this._onBarLeave}
data-is-focusable={!this.props.hideTooltip}
onFocus={this._onBarFocus.bind(this, point, index, colorScale(point.y))}
fill={point.color ? point.color : colorScale(point.y)}
/>
{this._renderBarLabel(xPoint, yPoint, point.y, point.legend!)}
</g>
);
});
// Removing un wanted tooltip div from DOM, when prop not provided.
if (!this.props.showXAxisLablesTooltip) {
try {
document.getElementById(this._tooltipId) && document.getElementById(this._tooltipId)!.remove();
// eslint-disable-next-line no-empty
} catch (e) {}
}
// Used to display tooltip at x axis labels.
Iif (!this.props.wrapXAxisLables && this.props.showXAxisLablesTooltip) {
const xAxisElement = d3Select(xElement).call(xBarScale);
try {
document.getElementById(this._tooltipId) && document.getElementById(this._tooltipId)!.remove();
// eslint-disable-next-line no-empty
} catch (e) {}
const tooltipProps = {
tooltipCls: this._classNames.tooltip!,
id: this._tooltipId,
xAxis: xAxisElement,
showTooltip: this.props.showXAxisLablesTooltip,
};
xAxisElement && tooltipOfXAxislabels(tooltipProps);
}
return bars;
}
private _createDateBars(containerHeight: number, containerWidth: number, xElement: SVGElement): JSX.Element[] {
const { useSingleColor = false } = this.props;
const { xBarScale, yBarScale } = this._getScales(containerHeight, containerWidth);
const colorScale = this._createColors();
const bars = this._points.map((point: IVerticalBarChartDataPoint, index: number) => {
const shouldHighlight = this._legendHighlighted(point.legend!) || this._noLegendHighlighted() ? true : false;
this._classNames = getClassNames(this.props.styles!, {
theme: this.props.theme!,
legendColor: this.state.color,
shouldHighlight: shouldHighlight,
});
const barHeight: number = Math.max(yBarScale(point.y), 0);
let adjustedBarHeight = 0;
if (barHeight <= 0) {
return <React.Fragment key={point.x instanceof Date ? point.x.getTime() : point.x}> </React.Fragment>;
} else Iif (barHeight <= Math.ceil(yBarScale(this._yMax) / 100.0)) {
adjustedBarHeight = Math.ceil(yBarScale(this._yMax) / 100.0);
} else {
adjustedBarHeight = barHeight;
}
const xPoint = xBarScale(point.x as number) - this._barWidth / 2;
const yPoint = containerHeight - this.margins.bottom! - adjustedBarHeight;
return (
<g key={point.x instanceof Date ? point.x.getTime() : point.x}>
<rect
id={getId('_VBC_bar_')}
x={xPoint}
className={this._classNames.opacityChangeOnHover}
y={yPoint}
width={this._barWidth}
data-is-focusable={!this.props.hideTooltip && shouldHighlight}
height={adjustedBarHeight}
ref={(e: SVGRectElement) => {
this._refCallback(e, point.legend!);
}}
onClick={point.onClick}
onMouseOver={this._onBarHover.bind(this, point, colorScale(point.y))}
aria-label={this._getAriaLabel(point)}
role="img"
onMouseLeave={this._onBarLeave}
onFocus={this._onBarFocus.bind(this, point, index, colorScale(point.y))}
onBlur={this._onBarLeave}
fill={point.color && !useSingleColor ? point.color : colorScale(point.y)}
/>
{this._renderBarLabel(xPoint, yPoint, point.y, point.legend!)}
</g>
);
});
// Removing un wanted tooltip div from DOM, when prop not provided.
if (!this.props.showXAxisLablesTooltip) {
try {
document.getElementById(this._tooltipId) && document.getElementById(this._tooltipId)!.remove();
// eslint-disable-next-line no-empty
} catch (e) {}
}
// Used to display tooltip at x axis labels.
Iif (!this.props.wrapXAxisLables && this.props.showXAxisLablesTooltip) {
const xAxisElement = d3Select(xElement).call(xBarScale);
try {
document.getElementById(this._tooltipId) && document.getElementById(this._tooltipId)!.remove();
// eslint-disable-next-line no-empty
} catch (e) {}
const tooltipProps = {
tooltipCls: this._classNames.tooltip!,
id: this._tooltipId,
xAxis: xAxisElement,
};
xAxisElement && tooltipOfXAxislabels(tooltipProps);
}
return bars;
}
private _closeCallout = () => {
this.setState({
isCalloutVisible: false,
});
};
private _onLegendClick(legendTitle: string): void {
if (this.state.selectedLegend === legendTitle) {
this.setState({
selectedLegend: '',
});
} else {
this.setState({
selectedLegend: legendTitle,
});
}
}
private _onLegendHover(legendTitle: string): void {
this.setState({
activeLegend: legendTitle,
});
}
private _onLegendLeave(): void {
this.setState({
activeLegend: '',
});
}
private _getLegendData = (data: IVerticalBarChartDataPoint[], palette: IPalette): JSX.Element => {
const { theme, useSingleColor } = this.props;
const { lineLegendText, lineLegendColor = theme!.palette.yellow } = this.props;
const actions: ILegend[] = [];
data.forEach((point: IVerticalBarChartDataPoint, _index: number) => {
const color: string = !useSingleColor ? point.color! : this._createColors()(1);
// mapping data to the format Legends component needs
const legend: ILegend = {
title: point.legend!,
color,
action: () => {
this._onLegendClick(point.legend!);
},
hoverAction: () => {
this._handleChartMouseLeave();
this._onLegendHover(point.legend!);
},
onMouseOutAction: () => {
this._onLegendLeave();
},
};
actions.push(legend);
});
if (this._isHavingLine && lineLegendText && lineLegendColor) {
const lineLegend: ILegend = {
title: lineLegendText,
color: lineLegendColor,
action: () => {
this._onLegendClick(lineLegendText);
},
hoverAction: () => {
this._handleChartMouseLeave();
this._onLegendHover(lineLegendText);
},
onMouseOutAction: () => {
this._onLegendLeave();
},
isLineLegendInBarChart: true,
};
actions.unshift(lineLegend);
}
const legends = (
<Legends
legends={actions}
enabledWrapLines={this.props.enabledLegendsWrapLines}
overflowProps={this.props.legendsOverflowProps}
focusZonePropsInHoverCard={this.props.focusZonePropsForLegendsInHoverCard}
overflowText={this.props.legendsOverflowText}
{...this.props.legendProps}
/>
);
return legends;
};
private _getAxisData = (yAxisData: IAxisData) => {
if (yAxisData && yAxisData.yAxisDomainValues.length) {
const { yAxisDomainValues: domainValue } = yAxisData;
this._yMax = Math.max(domainValue[domainValue.length - 1], this.props.yMaxValue || 0);
}
};
/**
* This function checks if the given legend is highlighted or not.
* A legend can be highlighted in 2 ways:
* 1. selection: if the user clicks on it
* 2. hovering: if there is no selected legend and the user hovers over it
*/
private _legendHighlighted = (legendTitle: string) => {
return (
this.state.selectedLegend === legendTitle ||
(this.state.selectedLegend === '' && this.state.activeLegend === legendTitle)
);
};
/**
* This function checks if none of the legends is selected or hovered.
*/
private _noLegendHighlighted = () => {
return this.state.selectedLegend === '' && this.state.activeLegend === '';
};
private _getAriaLabel = (point: IVerticalBarChartDataPoint): string => {
const xValue = point.xAxisCalloutData
? point.xAxisCalloutData
: point.x instanceof Date
? point.x.toLocaleString()
: point.x;
const legend = point.legend;
const yValue = point.yAxisCalloutData || point.y;
const lineLegend = this.props.lineLegendText || 'Line';
const lineYValue = point.lineData?.yAxisCalloutData || point.lineData?.y;
return (
point.callOutAccessibilityData?.ariaLabel ||
`${xValue}. ` +
(legend ? `${legend}, ` : '') +
`${yValue}.` +
(typeof lineYValue !== 'undefined' ? ` ${lineLegend}, ${lineYValue}.` : '')
);
};
private _renderBarLabel(xPoint: number, yPoint: number, barValue: number, legend: string) {
if (
this.props.hideLabels ||
this._barWidth < 16 ||
!(this._legendHighlighted(legend) || this._noLegendHighlighted())
) {
return null;
}
return (
<text
x={xPoint + this._barWidth / 2}
y={yPoint - 6}
textAnchor="middle"
className={this._classNames.barLabel}
aria-hidden={true}
>
{formatValueWithSIPrefix(barValue)}
</text>
);
}
private _getDomainMargins = (containerWidth: number): IMargins => {
this._domainMargin = MIN_DOMAIN_MARGIN;
/** Total width available to render the bars */
const totalWidth =
containerWidth - (this.margins.left! + MIN_DOMAIN_MARGIN) - (this.margins.right! + MIN_DOMAIN_MARGIN);
if (this._xAxisType === XAxisTypes.StringAxis) {
Iif (isScalePaddingDefined(this.props.xAxisOuterPadding, this.props.xAxisPadding)) {
// Setting the domain margin for string x-axis to 0 because the xAxisOuterPadding prop is now available
// to adjust the space before the first bar and after the last bar.
this._domainMargin = 0;
} else if (this.props.barWidth !== 'auto') {
/** Rate at which the space between the bars changes wrt the bar width */
const barGapRate = this._xAxisInnerPadding / (1 - this._xAxisInnerPadding);
// Update the bar width so that when CartesianChart rerenders,
// the following calculations don't use the previous bar width.
this._barWidth = getBarWidth(this.props.barWidth, this.props.maxBarWidth);
/** Total width required to render the bars. Directly proportional to bar width */
const reqWidth = (this._xAxisLabels.length + (this._xAxisLabels.length - 1) * barGapRate) * this._barWidth;
if (totalWidth >= reqWidth) {
// Center align the chart by setting equal left and right margins for domain
this._domainMargin = MIN_DOMAIN_MARGIN + (totalWidth - reqWidth) / 2;
}
}
} else {
const data = (this.props.data?.map(point => point.x) as number[] | Date[] | undefined) || [];
this._barWidth = getBarWidth(
this.props.barWidth,
this.props.maxBarWidth,
calculateAppropriateBarWidth(data, totalWidth),
);
this._domainMargin = MIN_DOMAIN_MARGIN + this._barWidth / 2;
}
return {
...this.margins,
left: this.margins.left! + this._domainMargin,
right: this.margins.right! + this._domainMargin,
};
};
private _isChartEmpty(): boolean {
return (
this._points.length === 0 ||
(d3Max(this._points, (point: IVerticalBarChartDataPoint) => point.y)! <= 0 && !this._isHavingLine)
);
}
}
|