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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
 *
 * This is unstable and not part of the public API and should not be used by
 * production systems. This file may be update/removed without notice.
 */
'use strict';

import type { BlockNodeRecord } from "./BlockNodeRecord";
import type ContentState from "./ContentState";
import type { DraftDecoratorType } from "./DraftDecoratorType";
import type SelectionState from "./SelectionState";
import type { BidiDirection } from "fbjs/lib/UnicodeBidiDirection";

const DraftEditorDecoratedLeaves = require("./DraftEditorDecoratedLeaves.react");

const DraftEditorLeaf = require("./DraftEditorLeaf.react");

const DraftOffsetKey = require("./DraftOffsetKey");

const Immutable = require("immutable");

const React = require("react");

const cx = require("fbjs/lib/cx");

const {
  List
} = Immutable;
type Props = {
  block: BlockNodeRecord,
  children: ?Array<React.Node>,
  contentState: ContentState,
  customStyleFn: Function,
  customStyleMap: Object,
  decorator: ?DraftDecoratorType,
  direction: BidiDirection,
  forceSelection: boolean,
  hasSelection: boolean,
  selection: SelectionState,
  tree: List<any>,
  ...
};

class DraftEditorNode extends React.Component<Props> {
  render(): React.Node {
    const {
      block,
      contentState,
      customStyleFn,
      customStyleMap,
      decorator,
      direction,
      forceSelection,
      hasSelection,
      selection,
      tree
    } = this.props;
    const blockKey = block.getKey();
    const text = block.getText();
    const lastLeafSet = tree.size - 1;
    const children = this.props.children || tree.map((leafSet, ii) => {
      const decoratorKey = leafSet.get('decoratorKey');
      const leavesForLeafSet = leafSet.get('leaves');
      const lastLeaf = leavesForLeafSet.size - 1;
      const Leaves = leavesForLeafSet.map((leaf, jj) => {
        const offsetKey = DraftOffsetKey.encode(blockKey, ii, jj);
        const start = leaf.get('start');
        const end = leaf.get('end');
        return <DraftEditorLeaf key={offsetKey} offsetKey={offsetKey} block={block} start={start} selection={hasSelection ? selection : null} forceSelection={forceSelection} text={text.slice(start, end)} styleSet={block.getInlineStyleAt(start)} customStyleMap={customStyleMap} customStyleFn={customStyleFn} isLast={decoratorKey === lastLeafSet && jj === lastLeaf} />;
      }).toArray();

if (!decoratorKey || !decorator) {
        return Leaves;
      }

return <DraftEditorDecoratedLeaves block={block} children={Leaves} contentState={contentState} decorator={decorator} decoratorKey={decoratorKey} direction={direction} leafSet={leafSet} text={text} key={ii} />;
    }).toArray();
    return <div data-offset-key={DraftOffsetKey.encode(blockKey, 0, 0)} className={cx({
      'public/DraftStyleDefault/block': true,
      'public/DraftStyleDefault/ltr': direction === 'LTR',
      'public/DraftStyleDefault/rtl': direction === 'RTL'
    })}>
        {children}
      </div>;
  }

}

module.exports = DraftEditorNode;