@dnb/eufemia/es/components/heading/Heading.js

DNB Eufemia Design System UI Library

"use client";

import _extends from "@babel/runtime/helpers/esm/extends";
import React from 'react';
import classnames from 'classnames';
import { isTrue, validateDOMAttributes } from "../../shared/component-helper.js";
import "../../shared/helpers.js";
import { createSpacingClasses } from "../space/SpacingHelper.js";
import HeadingContext from "./HeadingContext.js";
import HeadingProvider from "./HeadingProvider.js";
import { createSkeletonClass } from "../skeleton/SkeletonHelper.js";
import { correctInternalHeadingLevel, resetLevels, resetAllLevels, setNextLevel, globalSyncCounter, globalHeadingCounter, windupHeadings, teardownHeadings, debugCounter, getHeadingSize, getHeadingElement } from "./HeadingHelpers.js";
import { initCounter } from "./HeadingCounter.js";
import { useTheme, Context } from "../../shared/index.js";
export default function Heading(props) {
  const context = React.useContext(Context);
  const headingContext = React.useContext(HeadingContext);
  const _ref = React.useRef();
  const {
    text,
    group: _group,
    debug: _debug,
    debug_counter: _debug_counter,
    reset: _reset,
    skip_correction: _skip_correction,
    increase: _increase,
    decrease: _decrease,
    up: _up,
    down: _down,
    inherit: _inherit,
    level: _level,
    size: _size,
    skeleton: _skeleton,
    element: _element,
    className,
    children,
    ...rest
  } = props;
  const [state, setState] = React.useState(() => {
    const state = {
      level: null,
      counter: null,
      context,
      headingContext
    };
    state.counter = initCounter(props);
    const counter = headingContext.heading?.counter ? headingContext.heading.counter : globalHeadingCounter.current;
    state.counter.setContextCounter(counter);
    state.counter.isHeading = true;
    state.counter = correctInternalHeadingLevel({
      counter: state.counter,
      ref: props,
      level: parseFloat(String(props.level)),
      inherit: isTrue(props.inherit),
      reset: props.reset,
      increase: isTrue(props.increase) || isTrue(props.up),
      decrease: isTrue(props.decrease) || isTrue(props.down),
      bypassChecks: isTrue(props.skip_correction) || isTrue(state.headingContext?.heading?.skip_correction),
      source: props.text || props.children,
      debug: props.debug || state.headingContext?.heading?.debug
    });
    globalSyncCounter.current = state.counter;
    state.level = state.counter.level;
    state.prevLevel = parseFloat(String(props.level));
    return state;
  });
  React.useEffect(() => {
    windupHeadings();
    state.counter.windup();
    return () => {
      teardownHeadings();
      state.counter.teardown();
    };
  }, []);
  React.useEffect(() => {
    const level = parseFloat(String(props.level));
    if (state.prevLevel !== props.level && level > 0 && level !== state.level) {
      const {
        level: newLevel
      } = correctInternalHeadingLevel({
        counter: state.counter,
        isRerender: true,
        level,
        bypassChecks: isTrue(props.skip_correction) || isTrue(state.headingContext?.heading?.skip_correction),
        source: props.text || props.children,
        debug: props.debug || state.headingContext?.heading?.debug
      });
      state.level = state.prevLevel = newLevel;
      setState({
        ...state
      });
    }
  }, [props.level]);
  const theme = useTheme();
  let {
    size,
    element,
    skeleton
  } = props;
  const {
    level
  } = state;
  const debug = _debug || headingContext?.heading?.debug;
  const debug_counter = _debug_counter || headingContext?.heading?.debug_counter;
  const attributes = {
    ...rest
  };
  if (element == null) {
    element = getHeadingElement(level);
    if (size == null) {
      size = getHeadingSize(theme?.name)[level];
    }
  } else {
    if (!attributes.role) {
      attributes.role = 'heading';
    }
    if (!attributes['aria-level']) {
      attributes['aria-level'] = String(level);
    }
  }
  validateDOMAttributes(props, attributes);
  if (typeof context?.skeleton !== 'undefined') {
    skeleton = context.skeleton;
  }
  const Element = element;
  return React.createElement(Element, _extends({}, attributes, {
    ref: _ref,
    className: classnames(`dnb-heading dnb-h--${size}`, createSkeletonClass('font', skeleton, headingContext), className, createSpacingClasses(props))
  }), debug && React.createElement("span", {
    className: "dnb-heading__debug"
  }, `[h${level || '6'}] `, debug_counter && React.createElement(React.Fragment, null, ' ', React.createElement("span", {
    className: "dnb-code"
  }, debugCounter(state.counter)))), text || children);
}
Heading.Level = HeadingProvider;
Heading.Increase = props => React.createElement(HeadingProvider, _extends({
  increase: true
}, props));
Heading.Decrease = props => React.createElement(HeadingProvider, _extends({
  decrease: true
}, props));
Heading.Up = props => React.createElement(HeadingProvider, _extends({
  increase: true
}, props));
Heading.Down = props => React.createElement(HeadingProvider, _extends({
  decrease: true
}, props));
Heading.Reset = props => {
  globalHeadingCounter.current?.reset();
  return React.createElement(HeadingProvider, props);
};
Heading.resetLevels = resetLevels;
Heading.setNextLevel = setNextLevel;
Heading._isHeadingElement = true;
Heading._supportsSpacingProps = true;
export { resetAllLevels, resetLevels, setNextLevel };
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