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

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

'use strict';

Object.defineProperty(exports, "__esModule", {
  value: true
});

var _createClass = 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); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();

var _react = require('react');

var _react2 = _interopRequireDefault(_react);

var _reactAddonsShallowCompare = require('react-addons-shallow-compare');

var _reactAddonsShallowCompare2 = _interopRequireDefault(_reactAddonsShallowCompare);

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return call && (typeof call === "object" || typeof call === "function") ? call : self; }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function, not " + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; }

/**
 * Decorator component that automatically adjusts the width and height of a single child.
 * Child component should not be declared as a child but should rather be specified by a `ChildComponent` property.
 * All other properties will be passed through to the child component.
 */

var AutoSizer = function (_Component) {
  _inherits(AutoSizer, _Component);

  function AutoSizer(props) {
    _classCallCheck(this, AutoSizer);

    var _this = _possibleConstructorReturn(this, Object.getPrototypeOf(AutoSizer).call(this, props));

    _this.state = {
      height: 0,
      width: 0
    };

    _this._onResize = _this._onResize.bind(_this);
    _this._onScroll = _this._onScroll.bind(_this);
    _this._setRef = _this._setRef.bind(_this);
    return _this;
  }

  _createClass(AutoSizer, [{
    key: 'componentDidMount',
    value: function componentDidMount() {
      // Defer requiring resize handler in order to support server-side rendering.
      // See issue #41
      this._detectElementResize = require('../vendor/detectElementResize');
      this._detectElementResize.addResizeListener(this._parentNode, this._onResize);

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

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

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

      return _react2.default.createElement(
        'div',
        {
          ref: this._setRef,
          onScroll: this._onScroll,
          style: outerStyle
        },
        children({ height: height, width: width })
      );
    }
  }, {
    key: 'shouldComponentUpdate',
    value: function shouldComponentUpdate(nextProps, nextState) {
      return (0, _reactAddonsShallowCompare2.default)(this, nextProps, nextState);
    }
  }, {
    key: '_onResize',
    value: function _onResize() {
      var onResize = this.props.onResize;

      var _parentNode$getBoundi = this._parentNode.getBoundingClientRect();

      var height = _parentNode$getBoundi.height;
      var width = _parentNode$getBoundi.width;


      var style = getComputedStyle(this._parentNode);
      var paddingLeft = parseInt(style.paddingLeft, 10);
      var paddingRight = parseInt(style.paddingRight, 10);
      var paddingTop = parseInt(style.paddingTop, 10);
      var paddingBottom = parseInt(style.paddingBottom, 10);

      this.setState({
        height: height - paddingTop - paddingBottom,
        width: width - paddingLeft - paddingRight
      });

      onResize({ height: height, width: width });
    }
  }, {
    key: '_onScroll',
    value: function _onScroll(event) {
      // Prevent detectElementResize library from being triggered by this scroll event.
      event.stopPropagation();
    }
  }, {
    key: '_setRef',
    value: function _setRef(autoSizer) {
      // In case the component has been unmounted
      this._parentNode = autoSizer && autoSizer.parentNode;
    }
  }]);

  return AutoSizer;
}(_react.Component);

AutoSizer.propTypes = {
  /**
   * Function respondible for rendering children.
   * This function should implement the following signature:
   * ({ height, width }) => PropTypes.element
   */
  children: _react.PropTypes.func.isRequired,

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

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

  /** Callback to be invoked on-resize: ({ height, width }) */
  onResize: _react.PropTypes.func.isRequired
};
AutoSizer.defaultProps = {
  onResize: function onResize() {}
};
exports.default = AutoSizer;