@shopgate/engage/components/Footer/Footer.js

Shopgate's ENGAGE library.

function _typeof(obj){if(typeof Symbol==="function"&&typeof Symbol.iterator==="symbol"){_typeof=function _typeof(obj){return typeof obj;};}else{_typeof=function _typeof(obj){return obj&&typeof Symbol==="function"&&obj.constructor===Symbol&&obj!==Symbol.prototype?"symbol":typeof obj;};}return _typeof(obj);}function _classCallCheck(instance,Constructor){if(!(instance instanceof Constructor)){throw new TypeError("Cannot call a class as a function");}}function _defineProperties(target,props){for(var i=0;i<props.length;i++){var descriptor=props[i];descriptor.enumerable=descriptor.enumerable||false;descriptor.configurable=true;if("value"in descriptor)descriptor.writable=true;Object.defineProperty(target,descriptor.key,descriptor);}}function _createClass(Constructor,protoProps,staticProps){if(protoProps)_defineProperties(Constructor.prototype,protoProps);if(staticProps)_defineProperties(Constructor,staticProps);return Constructor;}function _callSuper(_this,derived,args){function isNativeReflectConstruct(){if(typeof Reflect==="undefined"||!Reflect.construct)return false;if(Reflect.construct.sham)return false;if(typeof Proxy==="function")return true;try{return!Boolean.prototype.valueOf.call(Reflect.construct(Boolean,[],function(){}));}catch(e){return false;}}derived=_getPrototypeOf(derived);return _possibleConstructorReturn(_this,isNativeReflectConstruct()?Reflect.construct(derived,args||[],_getPrototypeOf(_this).constructor):derived.apply(_this,args));}function _possibleConstructorReturn(self,call){if(call&&(_typeof(call)==="object"||typeof call==="function")){return call;}return _assertThisInitialized(self);}function _assertThisInitialized(self){if(self===void 0){throw new ReferenceError("this hasn't been initialised - super() hasn't been called");}return self;}function _getPrototypeOf(o){_getPrototypeOf=Object.setPrototypeOf?Object.getPrototypeOf:function _getPrototypeOf(o){return o.__proto__||Object.getPrototypeOf(o);};return _getPrototypeOf(o);}function _inherits(subClass,superClass){if(typeof superClass!=="function"&&superClass!==null){throw new TypeError("Super expression must either be null or a function");}subClass.prototype=Object.create(superClass&&superClass.prototype,{constructor:{value:subClass,writable:true,configurable:true}});if(superClass)_setPrototypeOf(subClass,superClass);}function _setPrototypeOf(o,p){_setPrototypeOf=Object.setPrototypeOf||function _setPrototypeOf(o,p){o.__proto__=p;return o;};return _setPrototypeOf(o,p);}function _defineProperty(obj,key,value){if(key in obj){Object.defineProperty(obj,key,{value:value,enumerable:true,configurable:true,writable:true});}else{obj[key]=value;}return obj;}import React,{PureComponent}from'react';import PropTypes from'prop-types';import Portal from'@shopgate/pwa-common/components/Portal';import UIEvents from'@shopgate/pwa-core/emitters/ui';import{APP_FOOTER_CONTENT_BEFORE,APP_FOOTER_CONTENT_AFTER}from'@shopgate/pwa-common/constants/Portals';import{getAbsoluteHeight,getStyle}from'@shopgate/pwa-common/helpers/dom';import{SHEET_EVENTS}from'@shopgate/pwa-ui-shared/Sheet';import{footer,updateInsetBackgroundColor,updateFooterHeight}from"./Footer.style";var APP_FOOTER_ID='AppFooter';var DATA_IGNORED='data-footer-inset-update-ignore';/**
 * The footer component.
 */var Footer=/*#__PURE__*/function(_PureComponent){function Footer(){var _this2;_classCallCheck(this,Footer);for(var _len=arguments.length,args=new Array(_len),_key=0;_key<_len;_key++){args[_key]=arguments[_key];}_this2=_callSuper(this,Footer,[].concat(args));_defineProperty(_this2,"ref",React.createRef());/** Perform hide action */_defineProperty(_this2,"hide",function(){if(_this2.ref.current){updateFooterHeight(0);}});/** Perform show action */_defineProperty(_this2,"show",function(){if(_this2.ref.current){updateFooterHeight(getAbsoluteHeight(_this2.ref.current));}});return _this2;}_inherits(Footer,_PureComponent);return _createClass(Footer,[{key:"componentDidMount",value:function componentDidMount(){var _this3=this;this.performFooterUpdate();var observer=new MutationObserver(function(mutations){var update=mutations.filter(function(mutation){return mutation.target.getAttribute(DATA_IGNORED)!=='true';}).length>0;if(update){_this3.performFooterUpdate();}});observer.observe(this.ref.current,{attributes:true,childList:true,subtree:true});UIEvents.addListener(SHEET_EVENTS.OPEN,this.hide);UIEvents.addListener(SHEET_EVENTS.CLOSE,this.show);}/** @inheritDoc */},{key:"componentWillUnmount",value:function componentWillUnmount(){UIEvents.removeListener(SHEET_EVENTS.OPEN,this.hide);UIEvents.removeListener(SHEET_EVENTS.CLOSE,this.show);}},{key:"getInsetBackgroundColor",value:/**
   * Retrieves the background color for the footer inset.
   * @param {NodeList} elements The DOM elements to inspect.
   * @returns {string|null}
   */function getInsetBackgroundColor(elements){var _this4=this;/**
     * The background color of the bottom inset needs to identical to the last entry of the footer.
     * So we loop backwards to the elements to find the first visible one.
     */var color=Array.from(elements).reverse().reduce(function(result,element){var ignore=element.getAttribute(DATA_IGNORED)==='true';if(result||ignore){// Nothing to do, since the color was already determined or the element can be ignored.
return result;}if(element.id===APP_FOOTER_ID){// Inspect core portal.
return _this4.getInsetBackgroundColor(element.children);}if('clientHeight'in element){// Take the background color of the last visible element from the end of the footer.
return getStyle(element,'backgroundColor');}// Nothing happened within this loop - proceed with the next one.
return result;},null);if(color==='rgba(0, 0, 0, 0)'||color==='transparent'){return null;}return color||null;}},{key:"performFooterUpdate",value:/**
   * Performs an update of the footer: background color, height.
   */function performFooterUpdate(){if(this.ref.current){updateFooterHeight(getAbsoluteHeight(this.ref.current));updateInsetBackgroundColor(this.getInsetBackgroundColor(this.ref.current.children));}}/**
   * Checks if the footer has visible content.
   * @returns {boolean}
   */},{key:"hasVisibleContent",value:function hasVisibleContent(){if(this.ref.current){var elements=this.ref.current.parentElement.querySelectorAll("div.".concat(footer.toString()," > *:not(#").concat(APP_FOOTER_ID,"), #").concat(APP_FOOTER_ID," > *"));return Array.from(elements).filter(function(element){return element.getAttribute(DATA_IGNORED)!=='true'&&element.clientHeight>0;}).length>0;}return false;}/**
   * @returns {JSX}
   */},{key:"render",value:function render(){return React.createElement("div",{className:"".concat(footer," engage__footer"),ref:this.ref},React.createElement(Portal,{name:APP_FOOTER_CONTENT_BEFORE}),React.createElement("div",{id:APP_FOOTER_ID},this.props.children),React.createElement(Portal,{name:APP_FOOTER_CONTENT_AFTER}));}}]);}(PureComponent);_defineProperty(Footer,"defaultProps",{children:null/**
   * Sets up the DOM Mutation Observer to take care that the footer inset always has the correct
   * background color, which matches the background color of the last element within the footer.
   */});export default Footer;