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node_modules/react-overlays/lib/Position.js

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+'use strict';
+
+exports.__esModule = true;
+
+var _extends = Object.assign || function (target) { for (var i = 1; i < arguments.length; i++) { var source = arguments[i]; for (var key in source) { if (Object.prototype.hasOwnProperty.call(source, key)) { target[key] = source[key]; } } } return target; };
+
+var _classnames = require('classnames');
+
+var _classnames2 = _interopRequireDefault(_classnames);
+
+var _propTypes = require('prop-types');
+
+var _propTypes2 = _interopRequireDefault(_propTypes);
+
+var _componentOrElement = require('prop-types-extra/lib/componentOrElement');
+
+var _componentOrElement2 = _interopRequireDefault(_componentOrElement);
+
+var _react = require('react');
+
+var _react2 = _interopRequireDefault(_react);
+
+var _reactDom = require('react-dom');
+
+var _reactDom2 = _interopRequireDefault(_reactDom);
+
+var _calculatePosition = require('./utils/calculatePosition');
+
+var _calculatePosition2 = _interopRequireDefault(_calculatePosition);
+
+var _getContainer = require('./utils/getContainer');
+
+var _getContainer2 = _interopRequireDefault(_getContainer);
+
+var _ownerDocument = require('./utils/ownerDocument');
+
+var _ownerDocument2 = _interopRequireDefault(_ownerDocument);
+
+function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
+
+function _objectWithoutProperties(obj, keys) { var target = {}; for (var i in obj) { if (keys.indexOf(i) >= 0) continue; if (!Object.prototype.hasOwnProperty.call(obj, i)) continue; target[i] = obj[i]; } return target; }
+
+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; }
+
+/**
+ * The Position component calculates the coordinates for its child, to position
+ * it relative to a `target` component or node. Useful for creating callouts
+ * and tooltips, the Position component injects a `style` props with `left` and
+ * `top` values for positioning your component.
+ *
+ * It also injects "arrow" `left`, and `top` values for styling callout arrows
+ * for giving your components a sense of directionality.
+ */
+var Position = function (_React$Component) {
+  _inherits(Position, _React$Component);
+
+  function Position(props, context) {
+    _classCallCheck(this, Position);
+
+    var _this = _possibleConstructorReturn(this, _React$Component.call(this, props, context));
+
+    _this.getTarget = function () {
+      var target = _this.props.target;
+
+      var targetElement = typeof target === 'function' ? target() : target;
+      return targetElement && _reactDom2.default.findDOMNode(targetElement) || null;
+    };
+
+    _this.maybeUpdatePosition = function (placementChanged) {
+      var target = _this.getTarget();
+
+      if (!_this.props.shouldUpdatePosition && target === _this._lastTarget && !placementChanged) {
+        return;
+      }
+
+      _this.updatePosition(target);
+    };
+
+    _this.state = {
+      positionLeft: 0,
+      positionTop: 0,
+      arrowOffsetLeft: null,
+      arrowOffsetTop: null
+    };
+
+    _this._needsFlush = false;
+    _this._lastTarget = null;
+    return _this;
+  }
+
+  Position.prototype.componentDidMount = function componentDidMount() {
+    this.updatePosition(this.getTarget());
+  };
+
+  Position.prototype.componentWillReceiveProps = function componentWillReceiveProps() {
+    this._needsFlush = true;
+  };
+
+  Position.prototype.componentDidUpdate = function componentDidUpdate(prevProps) {
+    if (this._needsFlush) {
+      this._needsFlush = false;
+      this.maybeUpdatePosition(this.props.placement !== prevProps.placement);
+    }
+  };
+
+  Position.prototype.render = function render() {
+    var _props = this.props,
+        children = _props.children,
+        className = _props.className,
+        props = _objectWithoutProperties(_props, ['children', 'className']);
+
+    var _state = this.state,
+        positionLeft = _state.positionLeft,
+        positionTop = _state.positionTop,
+        arrowPosition = _objectWithoutProperties(_state, ['positionLeft', 'positionTop']);
+
+    // These should not be forwarded to the child.
+
+
+    delete props.target;
+    delete props.container;
+    delete props.containerPadding;
+    delete props.shouldUpdatePosition;
+
+    var child = _react2.default.Children.only(children);
+    return (0, _react.cloneElement)(child, _extends({}, props, arrowPosition, {
+      // FIXME: Don't forward `positionLeft` and `positionTop` via both props
+      // and `props.style`.
+      positionLeft: positionLeft,
+      positionTop: positionTop,
+      className: (0, _classnames2.default)(className, child.props.className),
+      style: _extends({}, child.props.style, {
+        left: positionLeft,
+        top: positionTop
+      })
+    }));
+  };
+
+  Position.prototype.updatePosition = function updatePosition(target) {
+    this._lastTarget = target;
+
+    if (!target) {
+      this.setState({
+        positionLeft: 0,
+        positionTop: 0,
+        arrowOffsetLeft: null,
+        arrowOffsetTop: null
+      });
+
+      return;
+    }
+
+    var overlay = _reactDom2.default.findDOMNode(this);
+    var container = (0, _getContainer2.default)(this.props.container, (0, _ownerDocument2.default)(this).body);
+
+    this.setState((0, _calculatePosition2.default)(this.props.placement, overlay, target, container, this.props.containerPadding));
+  };
+
+  return Position;
+}(_react2.default.Component);
+
+Position.propTypes = {
+  /**
+   * A node, element, or function that returns either. The child will be
+   * be positioned next to the `target` specified.
+   */
+  target: _propTypes2.default.oneOfType([_componentOrElement2.default, _propTypes2.default.func]),
+
+  /**
+   * "offsetParent" of the component
+   */
+  container: _propTypes2.default.oneOfType([_componentOrElement2.default, _propTypes2.default.func]),
+  /**
+   * Minimum spacing in pixels between container border and component border
+   */
+  containerPadding: _propTypes2.default.number,
+  /**
+   * How to position the component relative to the target
+   */
+  placement: _propTypes2.default.oneOf(['top', 'right', 'bottom', 'left']),
+  /**
+   * Whether the position should be changed on each update
+   */
+  shouldUpdatePosition: _propTypes2.default.bool
+};
+
+Position.displayName = 'Position';
+
+Position.defaultProps = {
+  containerPadding: 0,
+  placement: 'right',
+  shouldUpdatePosition: false
+};
+
+exports.default = Position;
+module.exports = exports['default'];