forked from Gitlink/forgeplus-react
38 lines
1.3 KiB
Plaintext
38 lines
1.3 KiB
Plaintext
/**
|
|
* Copyright (c) 2013-present, Facebook, Inc.
|
|
* All rights reserved.
|
|
*
|
|
* This source code is licensed under the BSD-style license found in the
|
|
* LICENSE file in the root directory of this source tree. An additional grant
|
|
* of patent rights can be found in the PATENTS file in the same directory.
|
|
*
|
|
* @providesModule adjustBlockDepthForContentState
|
|
* @format
|
|
* @flow
|
|
*/
|
|
|
|
'use strict';
|
|
|
|
import type ContentState from './ContentState';
|
|
import type SelectionState from './SelectionState';
|
|
|
|
function adjustBlockDepthForContentState(contentState: ContentState, selectionState: SelectionState, adjustment: number, maxDepth: number): ContentState {
|
|
var startKey = selectionState.getStartKey();
|
|
var endKey = selectionState.getEndKey();
|
|
var blockMap = contentState.getBlockMap();
|
|
var blocks = blockMap.toSeq().skipUntil((_, k) => k === startKey).takeUntil((_, k) => k === endKey).concat([[endKey, blockMap.get(endKey)]]).map(block => {
|
|
var depth = block.getDepth() + adjustment;
|
|
depth = Math.max(0, Math.min(depth, maxDepth));
|
|
return block.set('depth', depth);
|
|
});
|
|
|
|
blockMap = blockMap.merge(blocks);
|
|
|
|
return contentState.merge({
|
|
blockMap,
|
|
selectionBefore: selectionState,
|
|
selectionAfter: selectionState
|
|
});
|
|
}
|
|
|
|
module.exports = adjustBlockDepthForContentState; |