141 lines
3.8 KiB
Plaintext
141 lines
3.8 KiB
Plaintext
/**
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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 ContentBlockNode
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* @format
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* @flow
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*
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* This file is a fork of ContentBlock adding support for nesting references by
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* providing links to children, parent, prevSibling, and nextSibling.
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*
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* This is unstable and not part of the public API and should not be used by
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* production systems. This file may be update/removed without notice.
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*/
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'use strict';
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import type { BlockNode, BlockNodeConfig, BlockNodeKey } from './BlockNode';
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import type { DraftBlockType } from './DraftBlockType';
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import type { DraftInlineStyle } from './DraftInlineStyle';
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const CharacterMetadata = require('./CharacterMetadata');
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const Immutable = require('immutable');
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const findRangesImmutable = require('./findRangesImmutable');
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const { List, Map, OrderedSet, Record, Repeat } = Immutable;
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type ContentBlockNodeConfig = BlockNodeConfig & {
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children?: List<BlockNodeKey>;
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parent?: ?BlockNodeKey;
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prevSibling?: ?BlockNodeKey;
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nextSibling?: ?BlockNodeKey;
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};
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const EMPTY_SET = OrderedSet();
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const defaultRecord: ContentBlockNodeConfig = {
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parent: null,
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characterList: List(),
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data: Map(),
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depth: 0,
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key: '',
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text: '',
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type: 'unstyled',
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children: List(),
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prevSibling: null,
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nextSibling: null
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};
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const haveEqualStyle = (charA: CharacterMetadata, charB: CharacterMetadata): boolean => charA.getStyle() === charB.getStyle();
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const haveEqualEntity = (charA: CharacterMetadata, charB: CharacterMetadata): boolean => charA.getEntity() === charB.getEntity();
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const decorateCharacterList = (config: ContentBlockNodeConfig): ContentBlockNodeConfig => {
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if (!config) {
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return config;
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}
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const { characterList, text } = config;
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if (text && !characterList) {
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config.characterList = List(Repeat(CharacterMetadata.EMPTY, text.length));
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}
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return config;
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};
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class ContentBlockNode extends Record(defaultRecord) implements BlockNode {
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constructor(props: ContentBlockNodeConfig = defaultRecord) {
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super(decorateCharacterList(props));
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}
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getKey(): BlockNodeKey {
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return this.get('key');
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}
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getType(): DraftBlockType {
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return this.get('type');
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}
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getText(): string {
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return this.get('text');
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}
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getCharacterList(): List<CharacterMetadata> {
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return this.get('characterList');
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}
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getLength(): number {
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return this.getText().length;
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}
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getDepth(): number {
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return this.get('depth');
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}
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getData(): Map<any, any> {
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return this.get('data');
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}
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getInlineStyleAt(offset: number): DraftInlineStyle {
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var character = this.getCharacterList().get(offset);
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return character ? character.getStyle() : EMPTY_SET;
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}
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getEntityAt(offset: number): ?string {
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var character = this.getCharacterList().get(offset);
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return character ? character.getEntity() : null;
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}
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getChildKeys(): List<BlockNodeKey> {
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return this.get('children');
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}
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getParentKey(): ?BlockNodeKey {
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return this.get('parent');
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}
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getPrevSiblingKey(): ?BlockNodeKey {
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return this.get('prevSibling');
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}
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getNextSiblingKey(): ?BlockNodeKey {
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return this.get('nextSibling');
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}
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findStyleRanges(filterFn: (value: CharacterMetadata) => boolean, callback: (start: number, end: number) => void): void {
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findRangesImmutable(this.getCharacterList(), haveEqualStyle, filterFn, callback);
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}
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findEntityRanges(filterFn: (value: CharacterMetadata) => boolean, callback: (start: number, end: number) => void): void {
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findRangesImmutable(this.getCharacterList(), haveEqualEntity, filterFn, callback);
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}
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}
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module.exports = ContentBlockNode; |