react-virtualized/dist/es/AutoSizer/AutoSizer.js

React components for efficiently rendering large, scrollable lists and tabular data

import _extends from 'babel-runtime/helpers/extends';
import _Object$getPrototypeOf from 'babel-runtime/core-js/object/get-prototype-of';
import _classCallCheck from 'babel-runtime/helpers/classCallCheck';
import _createClass from 'babel-runtime/helpers/createClass';
import _possibleConstructorReturn from 'babel-runtime/helpers/possibleConstructorReturn';
import _inherits from 'babel-runtime/helpers/inherits';
import * as React from 'react';
import createDetectElementResize from '../vendor/detectElementResize';

var AutoSizer = function (_React$PureComponent) {
  _inherits(AutoSizer, _React$PureComponent);

  function AutoSizer() {
    var _ref;

    var _temp, _this, _ret;

    _classCallCheck(this, AutoSizer);

    for (var _len = arguments.length, args = Array(_len), _key = 0; _key < _len; _key++) {
      args[_key] = arguments[_key];
    }

    return _ret = (_temp = (_this = _possibleConstructorReturn(this, (_ref = AutoSizer.__proto__ || _Object$getPrototypeOf(AutoSizer)).call.apply(_ref, [this].concat(args))), _this), _this.state = {
      height: _this.props.defaultHeight || 0,
      width: _this.props.defaultWidth || 0
    }, _this._onResize = function () {
      var _this$props = _this.props,
          disableHeight = _this$props.disableHeight,
          disableWidth = _this$props.disableWidth,
          onResize = _this$props.onResize;


      if (_this._parentNode) {
        // Guard against AutoSizer component being removed from the DOM immediately after being added.
        // This can result in invalid style values which can result in NaN values if we don't handle them.
        // See issue #150 for more context.

        var _height = _this._parentNode.offsetHeight || 0;
        var _width = _this._parentNode.offsetWidth || 0;

        var win = _this._window || window;
        var _style = win.getComputedStyle(_this._parentNode) || {};
        var paddingLeft = parseInt(_style.paddingLeft, 10) || 0;
        var paddingRight = parseInt(_style.paddingRight, 10) || 0;
        var paddingTop = parseInt(_style.paddingTop, 10) || 0;
        var paddingBottom = parseInt(_style.paddingBottom, 10) || 0;

        var newHeight = _height - paddingTop - paddingBottom;
        var newWidth = _width - paddingLeft - paddingRight;

        if (!disableHeight && _this.state.height !== newHeight || !disableWidth && _this.state.width !== newWidth) {
          _this.setState({
            height: _height - paddingTop - paddingBottom,
            width: _width - paddingLeft - paddingRight
          });

          onResize({ height: _height, width: _width });
        }
      }
    }, _this._setRef = function (autoSizer) {
      _this._autoSizer = autoSizer;
    }, _temp), _possibleConstructorReturn(_this, _ret);
  } // uses any instead of Window because Flow doesn't have window type


  _createClass(AutoSizer, [{
    key: 'componentDidMount',
    value: function componentDidMount() {
      var nonce = this.props.nonce;

      if (this._autoSizer && this._autoSizer.parentNode && this._autoSizer.parentNode.ownerDocument && this._autoSizer.parentNode.ownerDocument.defaultView && this._autoSizer.parentNode instanceof this._autoSizer.parentNode.ownerDocument.defaultView.HTMLElement) {
        // Delay access of parentNode until mount.
        // This handles edge-cases where the component has already been unmounted before its ref has been set,
        // As well as libraries like react-lite which have a slightly different lifecycle.
        this._parentNode = this._autoSizer.parentNode;
        this._window = this._autoSizer.parentNode.ownerDocument.defaultView;

        // Defer requiring resize handler in order to support server-side rendering.
        // See issue #41
        this._detectElementResize = createDetectElementResize(nonce, this._window);
        this._detectElementResize.addResizeListener(this._parentNode, this._onResize);

        this._onResize();
      }
    }
  }, {
    key: 'componentWillUnmount',
    value: function componentWillUnmount() {
      if (this._detectElementResize && this._parentNode) {
        this._detectElementResize.removeResizeListener(this._parentNode, this._onResize);
      }
    }
  }, {
    key: 'render',
    value: function render() {
      var _props = this.props,
          children = _props.children,
          className = _props.className,
          disableHeight = _props.disableHeight,
          disableWidth = _props.disableWidth,
          style = _props.style;
      var _state = this.state,
          height = _state.height,
          width = _state.width;

      // Outer div should not force width/height since that may prevent containers from shrinking.
      // Inner component should overflow and use calculated width/height.
      // See issue #68 for more information.

      var outerStyle = { overflow: 'visible' };
      var childParams = {};

      if (!disableHeight) {
        outerStyle.height = 0;
        childParams.height = height;
      }

      if (!disableWidth) {
        outerStyle.width = 0;
        childParams.width = width;
      }

      /**
       * TODO: Avoid rendering children before the initial measurements have been collected.
       * At best this would just be wasting cycles.
       * Add this check into version 10 though as it could break too many ref callbacks in version 9.
       * Note that if default width/height props were provided this would still work with SSR.
      if (
        height !== 0 &&
        width !== 0
      ) {
        child = children({ height, width })
      }
      */

      return React.createElement(
        'div',
        {
          className: className,
          ref: this._setRef,
          style: _extends({}, outerStyle, style) },
        children(childParams)
      );
    }
  }]);

  return AutoSizer;
}(React.PureComponent);

AutoSizer.defaultProps = {
  onResize: function onResize() {},
  disableHeight: false,
  disableWidth: false,
  style: {}
};
AutoSizer.propTypes = process.env.NODE_ENV === 'production' ? null : {
  /** Function responsible for rendering children.*/
  children: PropTypes.func.isRequired,


  /** Optional custom CSS class name to attach to root AutoSizer element.  */
  className: PropTypes.string,


  /** Default height to use for initial render; useful for SSR */
  defaultHeight: PropTypes.number,


  /** Default width to use for initial render; useful for SSR */
  defaultWidth: PropTypes.number,


  /** Disable dynamic :height property */
  disableHeight: PropTypes.bool.isRequired,


  /** Disable dynamic :width property */
  disableWidth: PropTypes.bool.isRequired,


  /** Nonce of the inlined stylesheet for Content Security Policy */
  nonce: PropTypes.string,


  /** Callback to be invoked on-resize */
  onResize: PropTypes.func.isRequired,


  /** Optional inline style */
  style: PropTypes.object
};
export default AutoSizer;
import PropTypes from 'prop-types';