import { __require as requireImmutable } from '../../../../immutable@3.7.6/node_modules/immutable/dist/immutable.js';
import { __require as requireInsertIntoList } from './insertIntoList.js';
import { __require as requireInvariant } from '../../../../fbjs@2.0.0/node_modules/fbjs/lib/invariant.js';

/**
 * 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
 */

var insertTextIntoContentState_1;
var hasRequiredInsertTextIntoContentState;

function requireInsertTextIntoContentState () {
	if (hasRequiredInsertTextIntoContentState) return insertTextIntoContentState_1;
	hasRequiredInsertTextIntoContentState = 1;

	var Immutable = requireImmutable();

	var insertIntoList = requireInsertIntoList();

	var invariant = requireInvariant();

	var Repeat = Immutable.Repeat;

	function insertTextIntoContentState(contentState, selectionState, text, characterMetadata) {
	  !selectionState.isCollapsed() ? process.env.NODE_ENV !== "production" ? invariant(false, '`insertText` should only be called with a collapsed range.') : invariant(false) : void 0;
	  var len = null;

	  if (text != null) {
	    len = text.length;
	  }

	  if (len == null || len === 0) {
	    return contentState;
	  }

	  var blockMap = contentState.getBlockMap();
	  var key = selectionState.getStartKey();
	  var offset = selectionState.getStartOffset();
	  var block = blockMap.get(key);
	  var blockText = block.getText();
	  var newBlock = block.merge({
	    text: blockText.slice(0, offset) + text + blockText.slice(offset, block.getLength()),
	    characterList: insertIntoList(block.getCharacterList(), Repeat(characterMetadata, len).toList(), offset)
	  });
	  var newOffset = offset + len;
	  return contentState.merge({
	    blockMap: blockMap.set(key, newBlock),
	    selectionAfter: selectionState.merge({
	      anchorOffset: newOffset,
	      focusOffset: newOffset
	    })
	  });
	}

	insertTextIntoContentState_1 = insertTextIntoContentState;
	return insertTextIntoContentState_1;
}

export { requireInsertTextIntoContentState as __require };
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