forked from Gitlink/forgeplus-react
54 lines
1.6 KiB
JavaScript
54 lines
1.6 KiB
JavaScript
/**
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* Copyright (c) 2013-present, Facebook, Inc.
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* All rights reserved.
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*
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* This source code is licensed under the BSD-style license found in the
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* LICENSE file in the root directory of this source tree. An additional grant
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* of patent rights can be found in the PATENTS file in the same directory.
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*
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* @providesModule insertTextIntoContentState
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* @format
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*
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*/
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'use strict';
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var Immutable = require('immutable');
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var insertIntoList = require('./insertIntoList');
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var invariant = require('fbjs/lib/invariant');
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var Repeat = Immutable.Repeat;
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function insertTextIntoContentState(contentState, selectionState, text, characterMetadata) {
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!selectionState.isCollapsed() ? process.env.NODE_ENV !== 'production' ? invariant(false, '`insertText` should only be called with a collapsed range.') : invariant(false) : void 0;
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var len = text.length;
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if (!len) {
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return contentState;
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}
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var blockMap = contentState.getBlockMap();
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var key = selectionState.getStartKey();
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var offset = selectionState.getStartOffset();
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var block = blockMap.get(key);
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var blockText = block.getText();
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var newBlock = block.merge({
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text: blockText.slice(0, offset) + text + blockText.slice(offset, block.getLength()),
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characterList: insertIntoList(block.getCharacterList(), Repeat(characterMetadata, len).toList(), offset)
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});
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var newOffset = offset + len;
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return contentState.merge({
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blockMap: blockMap.set(key, newBlock),
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selectionAfter: selectionState.merge({
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anchorOffset: newOffset,
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focusOffset: newOffset
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})
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});
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}
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module.exports = insertTextIntoContentState; |