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File: Dimensions.js

/**
 * Dimensions.js
 *
 * Released under LGPL License.
 * Copyright (c) 1999-2017 Ephox Corp. All rights reserved
 *
 * License: http://www.tinymce.com/license
 * Contributing: http://www.tinymce.com/contributing
 */

/**
 * This module measures nodes and returns client rects. The client rects has an
 * extra node property.
 *
 * @private
 * @class tinymce.dom.Dimensions
 */
define(
  'tinymce.core.dom.Dimensions',
  [
    "tinymce.core.util.Arr",
    "tinymce.core.dom.NodeType",
    "tinymce.core.geom.ClientRect"
  ],
  function (Arr, NodeType, ClientRect) {

    function getClientRects(node) {
      function toArrayWithNode(clientRects) {
        return Arr.map(clientRects, function (clientRect) {
          clientRect = ClientRect.clone(clientRect);
          clientRect.node = node;

          return clientRect;
        });
      }

      if (Arr.isArray(node)) {
        return Arr.reduce(node, function (result, node) {
          return result.concat(getClientRects(node));
        }, []);
      }

      if (NodeType.isElement(node)) {
        return toArrayWithNode(node.getClientRects());
      }

      if (NodeType.isText(node)) {
        var rng = node.ownerDocument.createRange();

        rng.setStart(node, 0);
        rng.setEnd(node, node.data.length);

        return toArrayWithNode(rng.getClientRects());
      }
    }

    return {
      /**
       * Returns the client rects for a specific node.
       *
       * @method getClientRects
       * @param {Array/DOMNode} node Node or array of nodes to get client rects on.
       * @param {Array} Array of client rects with a extra node property.
       */
      getClientRects: getClientRects
    };
  }
);