@cimpress/react-components
Version:
React components to support the MCP styleguide
236 lines • 9.73 kB
JavaScript
var __rest = (this && this.__rest) || function (s, e) {
var t = {};
for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p) && e.indexOf(p) < 0)
t[p] = s[p];
if (s != null && typeof Object.getOwnPropertySymbols === "function")
for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) {
if (e.indexOf(p[i]) < 0 && Object.prototype.propertyIsEnumerable.call(s, p[i]))
t[p[i]] = s[p[i]];
}
return t;
};
import React, { useState, useEffect, useRef } from 'react';
import { css, cx } from '@emotion/css';
import { Tooltip } from './Tooltip';
import cvar from './theme/cvar';
/**
* Determines the number of digits after the decimal place. Returns 0 if there are none.
* @param {number} num any real number
* @returns {number} - an integer denoting the number of decimal digits
*/
export function countDecimals(num) {
if (Math.floor(num) === num)
return 0;
return num.toString().split('.')[1].length;
}
/**
* Rounds the given number to the closest increment. The increment can be any real number.
* @param {number} num any real number
* @param {number} inc any real number
* @returns {number} - num rounded to the closest increment.
*/
export function roundToIncrement(num, inc) {
return Math.round(Math.round(num / (inc / 10)) / 10) * inc; // https://gordonlesti.com/inaccurate-rounding-with-decimal-digits/
}
/**
* Set the number a string, truncate to the given decimal point, and cut off any extraneous decimal zeroes.
* @param {number} num any real number
* @param {number} decimals any integer
* @returns {string} - num truncated to the decimals, plus any extra zeroes removed.
*/
export function truncate(num, decimals) {
// toFixed() solves the problem of floats (such as 1.0000000000000000012) being returned from increment.
// the replace() will then determine if the result is a decimal with trailing zeroes, and remove the zeroes/decimal if applicable.
return num.toFixed(decimals).replace(/\.\d*0+$/, match => match.replace(/\.?0+$/, ''));
}
function toNumberOrDefault(s, defaultValue) {
const num = Number(s);
return Number.isNaN(num) ? defaultValue : num;
}
let barWidth = 0;
let barLeft = 0;
let touchIdentifier = 0;
function getPosition(element) {
const box = element.getBoundingClientRect();
return {
left: box.left + window.scrollX,
top: box.top + window.scrollY,
width: box.width,
height: box.height,
};
}
function getMouseX(e) {
// Regular mouse events.
/* eslint-disable no-self-compare */
if ('pageX' in e && e.pageX === e.pageX) {
return e.pageX;
}
// Touch events.
if ('changedTouches' in e) {
for (let i = 0; i < e.changedTouches.length; i += 1) {
if (e.changedTouches[i].identifier === touchIdentifier) {
return e.changedTouches[i].pageX;
}
}
}
return 0; // It should never get here.
}
const slider = css `
display: flex;
flex-direction: column;
position: relative;
user-select: none;
`;
const boxShadow = css `
box-shadow: 0 2px 5px 0 rgba(0, 0, 0, 0.25);
`;
const disabledCursor = css `
cursor: not-allowed;
`;
const sliderDisabled = css `
opacity: 0.3;
`;
const sliderTitleHeight = cvar('spacing-24');
const sliderBarHeight = cvar('spacing-4');
const sliderHandleSize = cvar('spacing-16');
const sliderTooltipOffset = cvar('spacing-4');
const sliderBarBorderRadius = `calc(${sliderHandleSize} / 2)`;
const sliderTitle = css `
height: ${sliderTitleHeight};
`;
const sliderBar = css `
position: absolute;
width: 100%;
top: calc(${sliderTitleHeight} + ((${sliderHandleSize} - ${sliderBarHeight}) / 2));
height: ${sliderBarHeight};
background-color: ${cvar('color-slider-empty')};
border-radius: ${sliderBarBorderRadius};
cursor: pointer;
`;
const sliderProgressBar = css `
position: relative;
background-color: ${cvar('color-background-info')};
height: 100%;
border-radius: ${sliderBarBorderRadius};
`;
const sliderHandle = css `
position: relative;
width: ${sliderHandleSize};
height: ${sliderHandleSize};
border-radius: calc(${sliderHandleSize} / 2);
border: 1px solid ${cvar('color-background-info')};
background-color: ${cvar('color-background')};
cursor: grab;
transform: translateX(-50%);
transition: box-shadow 0.3s;
box-shadow: 0 2px 5px 0 rgba(0, 0, 0, 0);
.tether-tooltip-target {
margin-top: ${cvar('spacing-4')};
width: ${sliderHandleSize};
height: ${sliderHandleSize};
}
`;
const sliderValues = css `
display: flex;
justify-content: space-between;
`;
const sliderVirtualHandle = css `
margin-top: -${sliderTooltipOffset};
width: ${sliderHandleSize};
height: calc(${sliderHandleSize} + ${sliderTooltipOffset});
`;
export const Slider = (_a) => {
var { value, label, min = 0, max = 100, disabled = false, increment = 1, selectOnDrag = false, onSelect, className } = _a, rest = __rest(_a, ["value", "label", "min", "max", "disabled", "increment", "selectOnDrag", "onSelect", "className"]);
// State setup
const [internalNumber, setInternalNumber] = useState(toNumberOrDefault(value, min));
const [displayString, setDisplayString] = useState(value.toString());
const [roundedNumber, setRoundedNumber] = useState(toNumberOrDefault(value, min));
const [decimals, setDecimals] = useState(increment);
const [dragging, setDragging] = useState(false);
const [hover, setHover] = useState(false);
// Ref to the slider bar
const sliderBarRef = useRef(null);
const left = `${100 * ((internalNumber - min) / (max - min))}%`;
const shouldFocus = hover || dragging;
useEffect(() => {
const valueAsNumber = toNumberOrDefault(value, min);
if (valueAsNumber !== roundedNumber) {
setInternalNumber(valueAsNumber);
setDisplayString(value.toString());
setRoundedNumber(valueAsNumber);
}
setDecimals(countDecimals(increment));
}, [value, increment]);
useEffect(() => {
if (!dragging) {
onSelect(roundedNumber);
}
}, [dragging]);
const onDragMove = (e) => {
const mouseX = getMouseX(e);
let nextInternalNumber;
if (mouseX <= barLeft) {
nextInternalNumber = min;
}
else if (mouseX >= barLeft + barWidth) {
nextInternalNumber = max;
}
else {
const range = max - min;
const percentage = (mouseX - barLeft) / barWidth;
nextInternalNumber = min + percentage * range;
}
const nextRoundedNumber = roundToIncrement(nextInternalNumber, increment);
const nextDisplayString = truncate(nextRoundedNumber, decimals);
setInternalNumber(nextInternalNumber);
setRoundedNumber(nextRoundedNumber);
setDisplayString(nextDisplayString);
if (selectOnDrag && nextRoundedNumber !== value) {
onSelect(nextRoundedNumber);
}
};
const onDragEnd = () => {
setDragging(false);
document.removeEventListener('mousemove', onDragMove);
document.removeEventListener('touchmove', onDragMove);
document.removeEventListener('mouseup', onDragEnd);
document.removeEventListener('touchend', onDragEnd);
};
const onDragStart = (e) => {
if (!disabled && !!sliderBarRef.current) {
const barPosition = getPosition(sliderBarRef.current);
barLeft = barPosition.left;
barWidth = barPosition.width;
if ('targetTouches' in e) {
touchIdentifier = e.targetTouches[0].identifier;
}
setDragging(true);
document.addEventListener('mousemove', onDragMove);
document.addEventListener('touchmove', onDragMove);
document.addEventListener('mouseup', onDragEnd);
document.addEventListener('touchend', onDragEnd);
onDragMove(e);
}
};
const onMouseEnter = () => {
setHover(true);
};
const onMouseLeave = () => {
setHover(false);
};
// TODO: {https://gitlab.com/Cimpress-Technology/internal-open-source/component-library/react-components/-/issues/151} fix a11y issues with this component.
/* eslint jsx-a11y/interactive-supports-focus: 0
jsx-a11y/no-static-element-interactions: 0
*/
return (React.createElement("div", Object.assign({ className: cx('crc-slider', slider, { [`${sliderDisabled}`]: disabled }, className), onMouseEnter: onMouseEnter, onFocus: onMouseEnter, onMouseLeave: onMouseLeave, onBlur: onMouseLeave }, rest),
React.createElement("div", { className: cx(sliderTitle) }, label),
React.createElement("div", { ref: sliderBarRef, className: cx(sliderBar, { [`${disabledCursor}`]: disabled }), onTouchStart: e => onDragStart(e), onMouseDown: onDragStart },
React.createElement("div", { className: cx(sliderProgressBar), style: { width: left } })),
React.createElement("div", { className: cx(sliderHandle, { [`${disabledCursor}`]: disabled, [`${boxShadow}`]: shouldFocus && !disabled }), style: { left } },
React.createElement(Tooltip, { direction: "bottom", show: shouldFocus, variety: "popover", contents: displayString },
React.createElement("div", { className: cx(sliderVirtualHandle), onMouseDown: onDragStart, onTouchStart: onDragStart }))),
React.createElement("div", { className: cx(sliderValues) },
React.createElement("div", { className: "slider-min" }, min),
React.createElement("div", { className: "slider-max" }, max))));
};
//# sourceMappingURL=Slider.js.map