OXIESEC PANEL

Name	Size	Modified	Perms
📁 ..	-	02/20/2020 05:44:43 AM	rwxr-xr-x
📄 BlockBoundary.ts	1.53 KB	02/20/2020 05:42:20 AM	rw-r--r--
📄 CaretBr.ts	1.47 KB	02/20/2020 05:42:20 AM	rw-r--r--
📄 CaretCandidate.ts	2.68 KB	02/20/2020 05:42:21 AM	rw-r--r--
📄 CaretContainer.ts	5.4 KB	02/20/2020 05:42:21 AM	rw-r--r--
📄 CaretContainerInline.ts	2.23 KB	02/20/2020 05:42:22 AM	rw-r--r--
📄 CaretContainerInput.ts	1.87 KB	02/20/2020 05:42:22 AM	rw-r--r--
📄 CaretContainerRemove.ts	3.3 KB	02/20/2020 05:42:23 AM	rw-r--r--
📄 CaretFinder.ts	4.09 KB	02/20/2020 05:42:25 AM	rw-r--r--
📄 CaretPosition.ts	13.27 KB	02/20/2020 05:42:26 AM	rw-r--r--
📄 CaretPositionPredicates.ts	2.24 KB	02/20/2020 05:42:27 AM	rw-r--r--
📄 CaretUtils.ts	8.54 KB	02/20/2020 05:42:27 AM	rw-r--r--
📄 CaretWalker.ts	7.67 KB	02/20/2020 05:42:28 AM	rw-r--r--
📄 FakeCaret.ts	6.26 KB	02/20/2020 05:42:28 AM	rw-r--r--
📄 InsertText.ts	1.32 KB	02/20/2020 05:42:29 AM	rw-r--r--
📄 LineReader.ts	5.88 KB	02/20/2020 05:42:29 AM	rw-r--r--
📄 LineUtils.ts	4.11 KB	02/20/2020 05:42:30 AM	rw-r--r--
📄 LineWalker.ts	4.56 KB	02/20/2020 05:42:30 AM	rw-r--r--
📄 TableCells.ts	3.58 KB	02/20/2020 05:42:31 AM	rw-r--r--

Editing: LineReader.ts

/**
 * Copyright (c) Tiny Technologies, Inc. All rights reserved.
 * Licensed under the LGPL or a commercial license.
 * For LGPL see License.txt in the project root for license information.
 * For commercial licenses see https://www.tiny.cloud/
 */

import { HTMLElement } from '@ephox/dom-globals';
import { Arr, Fun, Option, Options } from '@ephox/katamari';
import { CaretPosition } from './CaretPosition';
import { HDirection, CaretWalker } from './CaretWalker';
import CaretFinder from './CaretFinder';
import NodeType from '../dom/NodeType';
import { isInSameBlock } from './CaretUtils';

export enum BreakType {
  Br,
  Block,
  Wrap,
  Eol
}

export interface LineInfo {
  positions: CaretPosition[];
  breakType: BreakType;
  breakAt: Option<CaretPosition>;
}

type CheckerPredicate = typeof CaretPosition.isAbove | typeof CaretPosition.isBelow;
type LineInfoFinder = (scope: HTMLElement, start: CaretPosition) => LineInfo;
type CaretPositionsFinder = (scope: HTMLElement, start: CaretPosition) => CaretPosition[];

const flip = (direction: HDirection, positions: CaretPosition[]) => direction === HDirection.Backwards ? positions.reverse() : positions;

const walk = (direction: HDirection, caretWalker: CaretWalker, pos: CaretPosition): CaretPosition => {
  return direction === HDirection.Forwards ? caretWalker.next(pos) : caretWalker.prev(pos);
};

const getPositionsUntil = (predicate: CheckerPredicate, direction: HDirection, scope: HTMLElement, start: CaretPosition): LineInfo => {
  const caretWalker = CaretWalker(scope);
  let currentPos = start, nextPos: CaretPosition;
  const positions: CaretPosition[] = [];

while (currentPos) {
    nextPos = walk(direction, caretWalker, currentPos);

if (!nextPos) {
      break;
    }

if (NodeType.isBr(nextPos.getNode(false))) {
      if (direction === HDirection.Forwards) {
        return { positions: flip(direction, positions).concat([nextPos]), breakType: BreakType.Br, breakAt: Option.some(nextPos) };
      } else {
        return { positions: flip(direction, positions), breakType: BreakType.Br, breakAt: Option.some(nextPos) };
      }
    }

if (!nextPos.isVisible()) {
      currentPos = nextPos;
      continue;
    }

if (predicate(currentPos, nextPos)) {
      const breakType = getBreakType(scope, direction, currentPos, nextPos);
      return { positions: flip(direction, positions), breakType, breakAt: Option.some(nextPos) };
    }

positions.push(nextPos);
    currentPos = nextPos;
  }

return { positions: flip(direction, positions), breakType: BreakType.Eol, breakAt: Option.none() };
};

const getAdjacentLinePositions = (direction: HDirection, getPositionsUntilBreak: LineInfoFinder, scope: HTMLElement, start: CaretPosition): CaretPosition[] => {
  return getPositionsUntilBreak(scope, start).breakAt.map((pos) => {
    const positions = getPositionsUntilBreak(scope, pos).positions;
    return direction === HDirection.Backwards ? positions.concat(pos) : [pos].concat(positions);
  }).getOr([]);
};

const findClosestHorizontalPosition = (positions: CaretPosition[], pos: CaretPosition): Option<CaretPosition> => {
  return Arr.head(pos.getClientRects()).bind((targetRect) => {
    return findClosestHorizontalPositionFromPoint(positions, targetRect.left);
  });
};

const getPositionsUntilPreviousLine = Fun.curry(getPositionsUntil, CaretPosition.isAbove, -1) as LineInfoFinder;
const getPositionsUntilNextLine = Fun.curry(getPositionsUntil, CaretPosition.isBelow, 1) as LineInfoFinder;
const isAtFirstLine = (scope: HTMLElement, pos: CaretPosition) => getPositionsUntilPreviousLine(scope, pos).breakAt.isNone();
const isAtLastLine = (scope: HTMLElement, pos: CaretPosition) => getPositionsUntilNextLine(scope, pos).breakAt.isNone();
const getPositionsAbove = Fun.curry(getAdjacentLinePositions, -1, getPositionsUntilPreviousLine) as CaretPositionsFinder;
const getPositionsBelow = Fun.curry(getAdjacentLinePositions, 1, getPositionsUntilNextLine) as CaretPositionsFinder;

const getFirstLinePositions = (scope: HTMLElement) => CaretFinder.firstPositionIn(scope).map((pos) => {
  return [pos].concat(getPositionsUntilNextLine(scope, pos).positions);
}).getOr([]);

const getLastLinePositions = (scope: HTMLElement) => CaretFinder.lastPositionIn(scope).map((pos) => {
  return getPositionsUntilPreviousLine(scope, pos).positions.concat(pos);
}).getOr([]);

const getClosestPositionAbove = (scope: HTMLElement, pos: CaretPosition): Option<CaretPosition> => {
  return findClosestHorizontalPosition(getPositionsAbove(scope, pos), pos);
};

const getClosestPositionBelow = (scope: HTMLElement, pos: CaretPosition): Option<CaretPosition> => {
  return findClosestHorizontalPosition(getPositionsBelow(scope, pos), pos);
};

export {
  getPositionsUntilPreviousLine,
  getPositionsUntilNextLine,
  isAtFirstLine,
  isAtLastLine,
  getPositionsAbove,
  getPositionsBelow,
  findClosestHorizontalPosition,
  findClosestHorizontalPositionFromPoint,
  getFirstLinePositions,
  getLastLinePositions,
  getClosestPositionAbove,
  getClosestPositionBelow
};