import React from 'react';
import { CellMeasurer, CellMeasurerCache, List } from 'react-virtualized';

// In this example, average cell height is assumed to be about 50px.
// This value will be used for the initial `Grid` layout.
// Width is not dynamic.
const cache = new CellMeasurerCache({
  defaultHeight: 50,
  fixedWidth: true
});

function rowRenderer ({ index, isScrolling, key, parent, style }) {
  const source // This comes from your list data

  return (
    <CellMeasurer
      cache={cache}
      columnIndex={0}
      key={key}
      parent={parent}
      rowIndex={index}
    >
      {({ measure, registerChild }) => (
        // 'style' attribute required to position cell (within parent List)
        <div ref={registerChild} style={style}>
          blabla
        </div>
      )}
    </CellMeasurer>
  );
}

function renderList (props) {
  return (
    <List
      {...props}
      deferredMeasurementCache={cache}
      rowHeight={cache.rowHeight}
      rowRenderer={rowRenderer}
    />
  );
}

function rowRenderer ({ index, isScrolling, key, parent, style }) {
  const source // This comes from your list data

  return (
    <CellMeasurer
      cache={cache}
      columnIndex={0}
      key={key}
      parent={parent}
      rowIndex={index}
    >
      {({ measure, registerChild }) => (
        // 'style' attribute required to position cell (within parent List)
        <div ref={registerChild} style={style}>
          <img
            onLoad={measure}
            src={source}
          />
        </div>
      )}
    </CellMeasurer>
  );
}

  _getCellMeasurements() {
    const {cache} = this.props;
    const node = this._child || findDOMNode(this);

    if (
      node &&
      node.ownerDocument &&
      node.ownerDocument.defaultView &&
      node instanceof node.ownerDocument.defaultView.HTMLElement
    ) {
      const styleWidth = node.style.width;
      const styleHeight = node.style.height;

      if (!cache.hasFixedWidth()) {
        node.style.width = 'auto';
      }
      if (!cache.hasFixedHeight()) {
        node.style.height = 'auto';
      }

      const height = Math.ceil(node.offsetHeight);
      const width = Math.ceil(node.offsetWidth);

      // Reset after measuring to avoid breaking styles; see #660
      if (styleWidth) {
        node.style.width = styleWidth;
      }
      if (styleHeight) {
        node.style.height = styleHeight;
      }

      return {height, width};
    } else {
      return {height: 0, width: 0};
    }
  }