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Viewing file:     applyEntityToContentState.js (1.31 KB)      -rw-r--r--

/**
 * 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';

var applyEntityToContentBlock = require("./applyEntityToContentBlock");

var Immutable = require("immutable");

function applyEntityToContentState(contentState, selectionState, entityKey) {
  var blockMap = contentState.getBlockMap();
  var startKey = selectionState.getStartKey();
  var startOffset = selectionState.getStartOffset();
  var endKey = selectionState.getEndKey();
  var endOffset = selectionState.getEndOffset();
  var newBlocks = blockMap.skipUntil(function (_, k) {
    return k === startKey;
  }).takeUntil(function (_, k) {
    return k === endKey;
  }).toOrderedMap().merge(Immutable.OrderedMap([[endKey, blockMap.get(endKey)]])).map(function (block, blockKey) {
    var sliceStart = blockKey === startKey ? startOffset : 0;
    var sliceEnd = blockKey === endKey ? endOffset : block.getLength();
    return applyEntityToContentBlock(block, sliceStart, sliceEnd, entityKey);
  });
  return contentState.merge({
    blockMap: blockMap.merge(newBlocks),
    selectionBefore: selectionState,
    selectionAfter: selectionState
  });
}

module.exports = applyEntityToContentState;