rc-input-number-modern/es/StepHandler.js

React input-number component

import _extends from "@babel/runtime/helpers/esm/extends";
/* eslint-disable react/no-unknown-property */
import * as React from 'react';
import classNames from 'classnames';
import useMobile from "rc-util/es/hooks/useMobile";
import raf from "rc-util/es/raf";

/**
 * When click and hold on a button - the speed of auto changing the value.
 */
const STEP_INTERVAL = 200;

/**
 * When click and hold on a button - the delay before auto changing the value.
 */
const STEP_DELAY = 600;
export default function StepHandler({
  prefixCls,
  upNode,
  downNode,
  upDisabled,
  downDisabled,
  onStep
}) {
  // ======================== Step ========================
  const stepTimeoutRef = React.useRef();
  const frameIds = React.useRef([]);
  const onStepRef = React.useRef();
  onStepRef.current = onStep;
  const onStopStep = () => {
    clearTimeout(stepTimeoutRef.current);
  };

  // We will interval update step when hold mouse down
  const onStepMouseDown = (e, up) => {
    e.preventDefault();
    onStopStep();
    onStepRef.current(up);

    // Loop step for interval
    function loopStep() {
      onStepRef.current(up);
      stepTimeoutRef.current = setTimeout(loopStep, STEP_INTERVAL);
    }

    // First time press will wait some time to trigger loop step update
    stepTimeoutRef.current = setTimeout(loopStep, STEP_DELAY);
  };
  React.useEffect(() => () => {
    onStopStep();
    frameIds.current.forEach(id => raf.cancel(id));
  }, []);

  // ======================= Render =======================
  const isMobile = useMobile();
  if (isMobile) {
    return null;
  }
  const handlerClassName = `${prefixCls}-handler`;
  const upClassName = classNames(handlerClassName, `${handlerClassName}-up`, {
    [`${handlerClassName}-up-disabled`]: upDisabled
  });
  const downClassName = classNames(handlerClassName, `${handlerClassName}-down`, {
    [`${handlerClassName}-down-disabled`]: downDisabled
  });

  // fix: https://github.com/ant-design/ant-design/issues/43088
  // In Safari, When we fire onmousedown and onmouseup events in quick succession, 
  // there may be a problem that the onmouseup events are executed first, 
  // resulting in a disordered program execution.
  // So, we need to use requestAnimationFrame to ensure that the onmouseup event is executed after the onmousedown event.
  const safeOnStopStep = () => frameIds.current.push(raf(onStopStep));
  const sharedHandlerProps = {
    unselectable: 'on',
    role: 'button',
    onMouseUp: safeOnStopStep,
    onMouseLeave: safeOnStopStep
  };
  return /*#__PURE__*/React.createElement("div", {
    className: `${handlerClassName}-wrap`
  }, /*#__PURE__*/React.createElement("span", _extends({}, sharedHandlerProps, {
    onMouseDown: e => {
      onStepMouseDown(e, true);
    },
    "aria-label": "Increase Value",
    "aria-disabled": upDisabled,
    className: upClassName
  }), upNode || /*#__PURE__*/React.createElement("span", {
    unselectable: "on",
    className: `${prefixCls}-handler-up-inner`
  })), /*#__PURE__*/React.createElement("span", _extends({}, sharedHandlerProps, {
    onMouseDown: e => {
      onStepMouseDown(e, false);
    },
    "aria-label": "Decrease Value",
    "aria-disabled": downDisabled,
    className: downClassName
  }), downNode || /*#__PURE__*/React.createElement("span", {
    unselectable: "on",
    className: `${prefixCls}-handler-down-inner`
  })));
}