@zohodesk/components/es/Responsive/ResizeComponent.js

In this Package, we Provide Some Basic Components to Build Web App

/* eslint-disable */
// QUestions to be discussed
//1) mutation.type === 'characterData' needed ???
// 2) debounce Mutation observer and resize observer
import React from 'react';
import PropTypes from 'prop-types';
import ResizeObserver from "./ResizeObserver";
import { getElementSpace, debounce } from "../utils/Common";
export default class ResizeComponent extends React.Component {
  constructor(props) {
    super(props);
    this.noSpaceForChildren = false;
    this.childrenCurrentList = [];
    this.widthCheck = debounce(this.widthCheck.bind(this), 10); // this.widthCheck = this.widthCheck.bind(this);

    this.onResize = this.onResize.bind(this);
    this.onResizeMutation = this.onResizeMutation.bind(this);
    this.tabsObserver = new ResizeObserver(this.onResize);
    this.tabObserver = new MutationObserver(this.onResizeMutation);
    this.reset = this.reset.bind(this);
    this.constructChildren = this.constructChildren.bind(this);
    this.querySelector = this.querySelector.bind(this);
  }

  querySelector() {
    if (this.props.wrapperDivRef && this.props.wrapperDivRef.current) {
      return this.props.wrapperDivRef.current.querySelectorAll('[data-responsive="true"]');
    } else {
      return [];
    }
  }

  onResizeMutation(mutations) {
    // console.log(mutations);
    let {
      childrenList
    } = this.props;

    for (const mutation of mutations) {
      if (mutation.type === 'childList') {
        if (mutation.addedNodes.length) {
          let newAdded = false;
          mutation.addedNodes.forEach(mut => {
            // Here we can listen for icon nodes. Confirm with bk
            if (mut.attributes && mut.attributes['data-responsive'] && (childrenList.length !== this.querySelector().length || this.childrenCurrentList.length !== this.querySelector().length)) {
              newAdded = true;
            }
          });

          if (newAdded) {
            //console.log('A child node has been added ', mutation);
            this.onResize();
          }
        } else if (mutation.removedNodes.length) {// ?? removed nodes ku check pannanum ah ??
          // console.log('A child node has been removed ', mutation);
        }
      } else if (mutation.type === 'attributes') {//console.log('The ' + mutation.attributeName + ' attribute was modified.', mutation);
      } else if (mutation.type === 'characterData') {// To Call While Changing InnerText, Remove Below line If Required. But It might affect Performance.
        // this.onResize();
      }
    } // mutations.forEach(mutation => {
    //   if (mutation.target === foo &&
    //     mutation.attributeName === 'style' &&
    //     oldWidth !== foo.style.width) {
    //       foo.textContent = 'Width changed from ' +
    //         oldWidth + ' to ' + foo.style.width;
    //       oldWidth = foo.style.width;
    //   }
    // });

  }

  componentDidMount() {
    if (this.props.wrapperDivRef && this.props.wrapperDivRef.current) {
      this.tabsObserver.observe(this.props.wrapperDivRef.current);
      this.tabObserver.observe(this.props.wrapperDivRef.current, {
        characterData: true,
        attributes: true,
        childList: true,
        subtree: true,
        attributeFilter: ['data-responsive']
      });
    }
  }

  componentWillUnmount() {
    this.reset();
  }

  reset() {
    this.childrenCurrentList = [];
    this.tabsObserver.disconnect();
    this.tabObserver && this.tabObserver.disconnect();
  }

  componentDidUpdate(prevProps) {
    if (this.childrenCurrentList.length === 0) {
      this.childrenCurrentList = this.querySelector();
      this.widthCheck();
    }

    if (this.props.resizeId !== prevProps.resizeId) {
      // Completely reset the observers and set new observer if id is changed
      this.reset();

      if (this.props.wrapperDivRef && this.props.wrapperDivRef.current) {
        this.tabsObserver.observe(this.props.wrapperDivRef.current);
        this.tabObserver.observe(this.props.wrapperDivRef.current, {
          characterData: true,
          attributes: true,
          childList: true,
          subtree: true,
          attributeFilter: ['data-responsive']
        });
      }
    }
  }

  onResize() {
    // if (this.childrenCurrentList.length !== 0) {
    this.childrenCurrentList = [];
    this.constructChildren(0, false); //}
  } // shouldComponentUpdate() {
  //   return this.childrenCurrentList.length === 0
  // }


  widthCheck() {
    let wrapperDivRef = this.props.wrapperDivRef.current;
    let moreDivRef = this.props.moreDivRef.current;

    if (wrapperDivRef && this.childrenCurrentList.length > 0) {
      const childrenWidthList = this.childrenCurrentList; // this.childrenCurrentList = childrenWidthList;

      const moreWidth = getElementSpace(moreDivRef).neededSpace; //console.log(moreWidth,'moreWidth');

      let totalWidth = getElementSpace(wrapperDivRef).availableInsideSpace - moreWidth;
      let _childrenTotalWidth = 0;
      let dataCount = 0;
      this.noSpaceForChildren = false;

      if (totalWidth <= moreWidth) {
        this.noSpaceForChildren = true;
      } else {
        for (let i = 0; i < childrenWidthList.length; i++) {
          let currentWidth = getElementSpace(childrenWidthList[i]).neededSpace;
          _childrenTotalWidth += currentWidth; // console.log(_childrenTotalWidth, currentWidth, totalWidth)

          if (i === childrenWidthList.length - 1 && moreWidth >= currentWidth) {
            totalWidth += moreWidth;
          }

          if (totalWidth <= _childrenTotalWidth) {
            dataCount = i;
            break;
          }
        }
      }

      this.constructChildren(dataCount, true);
    } else {
      this.constructChildren(0, false);
    }
  }

  constructChildren() {
    let dataCount = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : 0;
    let responsive = arguments.length > 1 ? arguments[1] : undefined;
    const {
      childrenList,
      getData
    } = this.props; // If the data count is zero we assume that we can render all the items - data count will be zero only when we want to calculate the whole list width

    dataCount = dataCount || childrenList && childrenList.length;
    getData({
      responsiveHook: responsive,
      validListCount: this.noSpaceForChildren ? 0 : dataCount
    });
  }

  render() {
    return /*#__PURE__*/React.createElement(React.Fragment, null, this.props.children);
  }

}
ResizeComponent.propTypes = {
  children: PropTypes.node,
  getData: PropTypes.func,
  resizeId: PropTypes.number,
  childrenList: PropTypes.array,
  wrapperDivRef: PropTypes.any,
  moreDivRef: PropTypes.any
};
ResizeComponent.defaultProps = {
  getData: () => {},
  resizeId: null
};