react-bootstrap/amd/transpiled/domUtils.js

Bootstrap 3 components build with React

define(
  ["exports"],
  function(__exports__) {
    "use strict";
    __exports__["default"] = {
      getComputedStyles: function (elem) {
        return elem.ownerDocument.defaultView.getComputedStyle(elem, null);
      },

      getOffset: function (DOMNode) {
        var docElem = document.documentElement;
        var box = { top: 0, left: 0 };

        // If we don't have gBCR, just use 0,0 rather than error
        // BlackBerry 5, iOS 3 (original iPhone)
        if ( typeof DOMNode.getBoundingClientRect !== 'undefined' ) {
          box = DOMNode.getBoundingClientRect();
        }

        return {
          top: box.top + window.pageYOffset - docElem.clientTop,
          left: box.left + window.pageXOffset - docElem.clientLeft
        };
      },

      getPosition: function (elem) {
        var offsetParent, offset,
            parentOffset = {top: 0, left: 0};

        // Fixed elements are offset from window (parentOffset = {top:0, left: 0}, because it is its only offset parent
        if (this.getComputedStyles(elem).position === 'fixed' ) {
          // We assume that getBoundingClientRect is available when computed position is fixed
          offset = elem.getBoundingClientRect();

        } else {
          // Get *real* offsetParent
          offsetParent = this.offsetParent(elem);

          // Get correct offsets
          offset = this.getOffset(elem);
          if ( offsetParent.nodeName !== 'HTML') {
            parentOffset = this.getOffset(offsetParent);
          }

          // Add offsetParent borders
          parentOffset.top += parseInt(this.getComputedStyles(offsetParent).borderTopWidth, 10);
          parentOffset.left += parseInt(this.getComputedStyles(offsetParent).borderLeftWidth, 10);
        }

        // Subtract parent offsets and element margins
        return {
          top: offset.top - parentOffset.top - parseInt(this.getComputedStyles(elem).marginTop, 10),
          left: offset.left - parentOffset.left - parseInt(this.getComputedStyles(elem).marginLeft, 10)
        };
      },

      offsetParent: function (elem) {
        var docElem = document.documentElement;
        var offsetParent = elem.offsetParent || docElem;

        while ( offsetParent && ( offsetParent.nodeName !== 'HTML' &&
          this.getComputedStyles(offsetParent).position === 'static' ) ) {
          offsetParent = offsetParent.offsetParent;
        }

        return offsetParent || docElem;
      }
    };
  });