67 lines
1.8 KiB
JavaScript
67 lines
1.8 KiB
JavaScript
import { REDUCER_KEY } from './constants';
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/**
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* Generates a class attribute value.
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*
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* @param {Iterable<string>} args - String iterable.
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* @returns {string} Class attribute value.
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*/
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export const classList = (...args) => args.filter(Boolean).join(' ');
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/**
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* Find the first styled ancestor component of an element.
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*
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* @param {Element} target - Element to look up.
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* @param {StyledComponentClass} component - Styled component reference.
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* @returns {Element|null} Ancestor.
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*/
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export const findStyledAncestor = (target, component) => {
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if (!target || target.matches(`.${component.styledComponentId}`)) {
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return target;
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}
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return findStyledAncestor(target.parentElement, component);
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};
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/**
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* Get a style property from a style declaration as a float.
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*
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* @param {CSSStyleDeclaration} styles - Style declaration.
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* @param {string} name - Property name.
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* @returns {number} Float value.
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*/
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export const getFloatStyleProperty = (styles, name) =>
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parseFloat(styles.getPropertyValue(name));
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/**
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* Gets the outer height of an element, including margins.
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*
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* @param {Element} element - Target element.
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* @returns {number} Computed height.
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*/
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export const getComputedOuterHeight = element => {
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const computedStyle = getComputedStyle(element);
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return element.offsetHeight
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+ getFloatStyleProperty(computedStyle, 'margin-top')
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+ getFloatStyleProperty(computedStyle, 'margin-bottom');
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};
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/**
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* Returns this feature's root state.
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*
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* @param {Object} state - Global state.
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* @returns {Object} Feature state.
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*/
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const getState = state => state[REDUCER_KEY];
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/**
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* Is the participants pane open.
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*
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* @param {Object} state - Global state.
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* @returns {boolean} Is the participants pane open.
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*/
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export const getParticipantsPaneOpen = state => Boolean(getState(state)?.isOpen);
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