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/** * Copyright (c) Facebook, Inc. and its affiliates. * * This source code is licensed under the MIT license found in the * LICENSE file in the root directory of this source tree. * * @format * * @emails oncall+draft_js */ 'use strict'; /** * Get offset key from a node or it's child nodes. Return the first offset key * found on the DOM tree of given node. */ var isElement = require("./isElement"); function getSelectionOffsetKeyForNode(node) { if (isElement(node)) { var castedNode = node; var offsetKey = castedNode.getAttribute('data-offset-key'); if (offsetKey) { return offsetKey; } for (var ii = 0; ii < castedNode.childNodes.length; ii++) { var childOffsetKey = getSelectionOffsetKeyForNode(castedNode.childNodes[ii]); if (childOffsetKey) { return childOffsetKey; } } } return null; } module.exports = getSelectionOffsetKeyForNode;