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DraftPasteProcessor.js
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DraftPasteProcessor.js
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/**
* 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
* @flow
* @emails oncall+draft_js
*/
'use strict';
import type {BlockNodeRecord} from 'BlockNodeRecord';
import type CharacterMetadata from 'CharacterMetadata';
import type {DraftBlockRenderMap} from 'DraftBlockRenderMap';
import type {DraftBlockType} from 'DraftBlockType';
import type {EntityMap} from 'EntityMap';
const ContentBlock = require('ContentBlock');
const ContentBlockNode = require('ContentBlockNode');
const convertFromHTMLToContentBlocks = require('convertFromHTMLToContentBlocks');
const generateRandomKey = require('generateRandomKey');
const getSafeBodyFromHTML = require('getSafeBodyFromHTML');
const gkx = require('gkx');
const Immutable = require('immutable');
const sanitizeDraftText = require('sanitizeDraftText');
const {List, Repeat} = Immutable;
const experimentalTreeDataSupport = gkx('draft_tree_data_support');
const ContentBlockRecord = experimentalTreeDataSupport
? ContentBlockNode
: ContentBlock;
const DraftPasteProcessor = {
processHTML(
html: string,
blockRenderMap?: DraftBlockRenderMap,
): ?{
contentBlocks: ?Array<BlockNodeRecord>,
entityMap: EntityMap,
...
} {
return convertFromHTMLToContentBlocks(
html,
getSafeBodyFromHTML,
blockRenderMap,
);
},
processText(
textBlocks: Array<string>,
character: CharacterMetadata,
type: DraftBlockType,
): Array<BlockNodeRecord> {
return textBlocks.reduce((acc, textLine, index) => {
textLine = sanitizeDraftText(textLine);
const key = generateRandomKey();
let blockNodeConfig = {
key,
type,
text: textLine,
characterList: List(Repeat(character, textLine.length)),
};
// next block updates previous block
if (experimentalTreeDataSupport && index !== 0) {
const prevSiblingIndex = index - 1;
// update previous block
const previousBlock = (acc[prevSiblingIndex] = acc[
prevSiblingIndex
].merge({
nextSibling: key,
}));
blockNodeConfig = {
...blockNodeConfig,
prevSibling: previousBlock.getKey(),
};
}
acc.push(new ContentBlockRecord(blockNodeConfig));
return acc;
}, []);
},
};
module.exports = DraftPasteProcessor;