Press n or j to go to the next uncovered block, b, p or k for the previous block.
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import {Cursor} from './Cursor';
import {stringify} from '../../../json-text/stringify';
import {CursorAnchor, SliceBehavior, SliceHeaderMask, SliceHeaderShift} from '../slice/constants';
import {EditorSlices} from './EditorSlices';
import {next, prev} from 'sonic-forest/lib/util';
import {isLetter, isPunctuation, isWhitespace} from './util';
import {Anchor} from '../rga/constants';
import {MarkerOverlayPoint} from '../overlay/MarkerOverlayPoint';
import {UndefEndIter, type UndefIterator} from '../../../util/iterator';
import {PersistedSlice} from '../slice/PersistedSlice';
import {ValueSyncStore} from '../../../util/events/sync-store';
import {formatType} from '../slice/util';
import {CommonSliceType, type SliceType} from '../slice';
import {tick} from '../../../json-crdt-patch';
import type {ChunkSlice} from '../util/ChunkSlice';
import type {Peritext} from '../Peritext';
import type {Point} from '../rga/Point';
import type {Range} from '../rga/Range';
import type {CharIterator, CharPredicate, Position, TextRangeUnit, ViewRange, ViewSlice} from './types';
import type {Printable} from 'tree-dump';
/**
* For inline boolean ("Overwrite") slices, both range endpoints should be
* attached to {@link Anchor.Before} as per the Peritext paper. This way, say
* bold text, automatically extends to include the next character typed as
* user types.
*
* @param range The range to be adjusted.
*/
const makeRangeExtendable = <T>(range: Range<T>): void => {
Iif (range.end.anchor !== Anchor.Before || range.start.anchor !== Anchor.Before) {
const start = range.start.clone();
const end = range.end.clone();
start.refBefore();
end.refBefore();
range.set(start, end);
}
};
export class Editor<T = string> implements Printable {
public readonly saved: EditorSlices<T>;
public readonly extra: EditorSlices<T>;
public readonly local: EditorSlices<T>;
/**
* Formatting which will be applied to the next inserted text. This is a
* temporary store for formatting which is not yet applied to the text, but
* will be if the cursor is not moved.
*/
public readonly pending = new ValueSyncStore<Map<CommonSliceType | string | number, unknown>>(new Map());
constructor(public readonly txt: Peritext<T>) {
this.saved = new EditorSlices(txt, txt.savedSlices);
this.extra = new EditorSlices(txt, txt.extraSlices);
this.local = new EditorSlices(txt, txt.localSlices);
}
public text(): string {
return this.txt.strApi().view();
}
// ------------------------------------------------------------------ cursors
public addCursor(range: Range<T> = this.txt.rangeAt(0), anchor: CursorAnchor = CursorAnchor.Start): Cursor<T> {
const cursor = this.txt.localSlices.ins<Cursor<T>, typeof Cursor>(
range,
SliceBehavior.Cursor,
anchor,
undefined,
Cursor,
);
return cursor;
}
/**
* Cursor is the the current user selection. It can be a caret or a range. If
* range is collapsed to a single point, it is a *caret*.
*
* Returns the first cursor in the text and removes all other cursors. If
* there is no cursor, creates one and inserts it at the start of the text.
* To work with multiple cursors, use `.cursors()` method.
*/
public get cursor(): Cursor<T> {
let cursor: Cursor<T> | undefined;
for (let i: Cursor<T> | undefined, iterator = this.cursors0(); (i = iterator()); )
if (!cursor) cursor = i;
else this.local.del(i);
return cursor ?? this.addCursor();
}
public cursors0(): UndefIterator<Cursor<T>> {
const iterator = this.txt.localSlices.iterator0();
return () => {
const slice = iterator();
return slice instanceof Cursor ? slice : void 0;
};
}
public cursors() {
return new UndefEndIter(this.cursors0());
}
public forCursor(callback: (cursor: Cursor<T>) => void): void {
for (let cursor: Cursor<T> | undefined, i = this.cursors0(); (cursor = i()); ) callback(cursor);
}
/**
* @returns Returns `true` if there is at least one cursor in the document.
*/
public hasCursor(): boolean {
return !!this.cursors0()();
}
/**
* @returns Returns the exact number of cursors in the document.
*/
public cursorCount(): number {
let cnt = 0;
for (const i = this.cursors0(); i(); ) cnt++;
return cnt;
}
/**
* Returns relative count of cursors (cardinality).
*
* @returns 0 if there are no cursors, 1 if there is exactly one cursor, 2 if
* there are more than one cursor.
*/
public cursorCard(): 0 | 1 | 2 {
const i = this.cursors0();
return !i() ? 0 : !i() ? 1 : 2;
}
public delCursor(cursor: Cursor<T>): void {
this.local.del(cursor);
}
public delCursors(): void {
for (let cursor: Cursor<T> | undefined, i = this.cursors0(); (cursor = i()); ) this.delCursor(cursor);
}
/**
* Ensures there is no range selection. If user has selected a range,
* the contents is removed and the cursor is set at the start of the range
* as caret.
*/
public collapseCursor(cursor: Cursor<T>): void {
this.delRange(cursor);
cursor.collapseToStart();
}
public collapseCursors(): void {
for (let i = this.cursors0(), cursor = i(); cursor; cursor = i()) this.collapseCursor(cursor);
}
// ------------------------------------------------------------- text editing
/**
* Ensures there is exactly one cursor. If the cursor is a range, contents
* inside the range is deleted and cursor is collapsed to a single point.
*
* @returns A single cursor collapsed to a single point.
*/
public caret(): Cursor<T> {
const cursor = this.cursor;
Iif (!cursor.isCollapsed()) this.delRange(cursor);
return cursor;
}
/**
* Insert inline text at current cursor position. If cursor selects a range,
* the range is removed and the text is inserted at the start of the range.
*/
public insert0(cursor: Cursor<T>, text: string): void {
Iif (!text) return;
if (!cursor.isCollapsed()) this.delRange(cursor);
const after = cursor.start.clone();
after.refAfter();
const txt = this.txt;
const textId = txt.ins(after.id, text);
const shift = text.length - 1;
const point = txt.point(shift ? tick(textId, shift) : textId, Anchor.After);
cursor.set(point, point, CursorAnchor.Start);
}
/**
* Inserts text at the cursor positions and collapses cursors, if necessary.
* The applies any pending inline formatting to the inserted text.
*/
public insert(text: string): void {
if (!this.hasCursor()) this.addCursor();
for (let cursor: Cursor<T> | undefined, i = this.cursors0(); (cursor = i()); ) {
this.insert0(cursor, text);
const pending = this.pending.value;
Iif (pending.size) {
this.pending.next(new Map());
const start = cursor.start.clone();
start.step(-text.length);
const range = this.txt.range(start, cursor.end.clone());
for (const [type, data] of pending) this.toggleRangeExclFmt(range, type, data);
}
}
}
/**
* Deletes the previous character at current cursor positions. If cursors
* select a range, deletes the whole range.
*/
public del(step: number = -1): void {
this.delete(step, 'char');
}
public delRange(range: Range<T>): void {
const txt = this.txt;
const overlay = txt.overlay;
const contained = overlay.findContained(range);
for (const slice of contained)
Iif (slice instanceof PersistedSlice && slice.behavior !== SliceBehavior.Cursor) slice.del();
txt.delStr(range);
}
/**
* Deletes one or more units of text in all cursors. If cursor is a range,
* deletes the whole range.
*
* @param step Number of units to delete.
* @param unit A unit of deletion: "char", "word", "line".
*/
public delete(step: number, unit: 'char' | 'word' | 'line'): void {
const txt = this.txt;
for (let i = this.cursors0(), cursor = i(); cursor; cursor = i()) {
if (!cursor.isCollapsed()) {
this.collapseCursor(cursor);
return;
}
let point1 = cursor.start.clone();
let point2 = point1.clone();
if (step > 0) point2 = this.skip(point2, step, unit);
else if (step < 0) point1 = this.skip(point1, step, unit);
else if (step === 0) {
point1 = this.skip(point1, -1, unit);
point2 = this.skip(point2, 1, unit);
}
const range = txt.range(point1, point2);
this.delRange(range);
point1.refAfter();
cursor.set(point1);
}
}
// ----------------------------------------------------------------- movement
/**
* Returns an iterator through visible text, one `step`, one character at a
* time, starting from a given {@link Point}.
*
* @param start The starting point.
* @param step Number of visible characters to skip.
* @returns The next visible character iterator.
*/
public walk(start: Point<T>, step: number = 1): CharIterator<T> {
let point: Point<T> | undefined = start.clone();
return () => {
if (!point) return;
const char = step > 0 ? point.rightChar() : point.leftChar();
if (!char) return (point = undefined);
const end = point.step(step);
if (end) point = undefined;
return char;
};
}
/**
* Returns a forward iterator through visible text, one character at a time,
* starting from a given {@link Point}.
*
* @param start The starting point.
* @param chunk Chunk to start from.
* @returns The next visible character iterator.
*/
public fwd(start: Point<T>): CharIterator<T> {
return this.walk(start, 1);
}
/**
* Returns a backward iterator through visible text, one character at a time,
* starting from a given {@link Point}.
*
* @param start The starting point.
* @param chunk Chunk to start from.
* @returns The previous visible character iterator.
*/
public bwd(start: Point<T>): CharIterator<T> {
return this.walk(start, -1);
}
/**
* Skips a word in an arbitrary direction. A word is defined by the `predicate`
* function, which returns `true` if the character is part of the word.
*
* @param iterator Character iterator.
* @param predicate Predicate function to match characters, returns `true` if
* the character is part of the word.
* @param firstLetterFound Whether the first letter has already been found. If
* not, will skip any characters until the first letter, which is matched
* by the `predicate` is found.
* @returns Point after the last skipped character.
*/
private skipWord(
iterator: CharIterator<T>,
predicate: CharPredicate<string>,
firstLetterFound: boolean,
): Point<T> | undefined {
let next: ChunkSlice<T> | undefined;
let prev: ChunkSlice<T> | undefined;
while ((next = iterator())) {
const char = (next.view() as string)[0];
if (firstLetterFound) {
if (!predicate(char)) break;
} else if (predicate(char)) firstLetterFound = true;
prev = next;
}
if (!prev) return;
return this.txt.point(prev.id(), Anchor.After);
}
/**
* Hard skips line, skips to the next "\n" newline character.
*
* @param iterator Character iterator.
* @returns Point after the last skipped character.
*/
private skipLine(iterator: CharIterator<T>): Point<T> | undefined {
let next: ChunkSlice<T> | undefined;
let prev: ChunkSlice<T> | undefined;
while ((next = iterator())) {
const char = (next.view() as string)[0];
if (char === '\n') break;
prev = next;
}
if (!prev) return;
return this.txt.point(prev.id(), Anchor.After);
}
/**
* End of word iterator (eow). Skips a word forward. A word is defined by the
* `predicate` function, which returns `true` if the character is part of the
* word.
*
* @param point Point from which to start skipping.
* @param predicate Character class to skip.
* @param firstLetterFound Whether the first letter has already been found. If
* not, will skip any characters until the first letter, which is
* matched by the `predicate` is found.
* @returns Point after the last character skipped.
*/
public eow(
point: Point<T>,
predicate: CharPredicate<string> = isLetter,
firstLetterFound: boolean = false,
): Point<T> {
return this.skipWord(this.fwd(point), predicate, firstLetterFound) || point;
}
/**
* Beginning of word iterator (bow). Skips a word backward. A word is defined
* by the `predicate` function, which returns `true` if the character is part
* of the word.
*
* @param point Point from which to start skipping.
* @param predicate Character class to skip.
* @param firstLetterFound Whether the first letter has already been found. If
* not, will skip any characters until the first letter, which is
* matched by the `predicate` is found.
* @returns Point after the last character skipped.
*/
public bow(
point: Point<T>,
predicate: CharPredicate<string> = isLetter,
firstLetterFound: boolean = false,
): Point<T> {
const bwd = this.bwd(point);
const endPoint = this.skipWord(bwd, predicate, firstLetterFound);
if (endPoint) endPoint.anchor = Anchor.Before;
return endPoint || point;
}
/** Find end of line, starting from given point. */
public eol(point: Point<T>): Point<T> {
return this.skipLine(this.fwd(point)) || this.end();
}
/** Find beginning of line, starting from given point. */
public bol(point: Point<T>): Point<T> {
const bwd = this.bwd(point);
const endPoint = this.skipLine(bwd);
if (endPoint) endPoint.anchor = Anchor.Before;
return endPoint || this.start();
}
/**
* Find end of block, starting from given point. Overlay should be refreshed
* before calling this method.
*/
public eob(point: Point<T>): Point<T> {
const txt = this.txt;
const overlay = txt.overlay;
point = point.clone();
point.halfstep(1);
if (point.isAbsEnd()) return point;
let overlayPoint = overlay.getOrNextHigher(point);
if (!overlayPoint) return this.end();
if (point.cmp(overlayPoint) === 0) overlayPoint = next(overlayPoint);
while (!(overlayPoint instanceof MarkerOverlayPoint) && overlayPoint) overlayPoint = next(overlayPoint);
if (overlayPoint instanceof MarkerOverlayPoint) {
const point = overlayPoint.clone();
point.refAfter();
return point;
} else return this.end();
}
/**
* Find beginning of block, starting from given point. Overlay should be
* refreshed before calling this method.
*/
public bob(point: Point<T>): Point<T> {
const overlay = this.txt.overlay;
point = point.clone();
point.halfstep(-1);
if (point.isAbsStart()) return point;
let overlayPoint = overlay.getOrNextLower(point);
if (!overlayPoint) return this.start();
while (!(overlayPoint instanceof MarkerOverlayPoint) && overlayPoint) overlayPoint = prev(overlayPoint);
if (overlayPoint instanceof MarkerOverlayPoint) {
const point = overlayPoint.clone();
point.refBefore();
return point;
} else return this.start();
}
/**
* Move a point given number of steps in a specified direction. The unit of
* one move step is defined by the `unit` parameter.
*
* @param point The point to start from.
* @param steps Number of steps to move. Negative number moves backward.
* @param unit The unit of move per step: "char", "word", "line", etc.
* @returns The destination point after the move.
*/
public skip(point: Point<T>, steps: number, unit: TextRangeUnit): Point<T> {
Iif (!steps) return point;
switch (unit) {
case 'point': {
const p = point.clone();
return p.halfstep(steps), p;
}
case 'char': {
const p = point.clone();
return p.step(steps), p;
}
case 'word': {
if (steps > 0) for (let i = 0; i < steps; i++) point = this.eow(point);
else for (let i = 0; i < -steps; i++) point = this.bow(point);
return point;
}
case 'line': {
if (steps > 0) for (let i = 0; i < steps; i++) point = this.eol(point);
else for (let i = 0; i < -steps; i++) point = this.bol(point);
return point;
}
case 'block': {
if (steps > 0) for (let i = 0; i < steps; i++) point = this.eob(point);
else for (let i = 0; i < -steps; i++) point = this.bob(point);
return point;
}
case 'all':
return steps > 0 ? this.end() : this.start();
}
}
/**
* Move all cursors given number of units.
*
* @param steps Number of steps to move.
* @param unit The unit of move per step: "char", "word", "line".
* @param endpoint 0 for "focus", 1 for "anchor", 2 for both.
* @param collapse Whether to collapse the range to a single point.
*/
public move(steps: number, unit: TextRangeUnit, endpoint: 0 | 1 | 2 = 0, collapse: boolean = true): void {
this.forCursor((cursor) => {
switch (endpoint) {
case 0: {
let point = cursor.focus();
point = this.skip(point, steps, unit);
if (collapse) cursor.set(point);
else cursor.setEndpoint(point, 0);
break;
}
case 1: {
let point = cursor.anchor();
point = this.skip(point, steps, unit);
Iif (collapse) cursor.set(point);
else cursor.setEndpoint(point, 1);
break;
}
case 2: {
const start = this.skip(cursor.start, steps, unit);
const end = collapse ? start.clone() : this.skip(cursor.end, steps, unit);
cursor.set(start, end);
break;
}
}
});
}
// ---------------------------------------------------------------- selection
/**
* Leaves only the first cursor, and sets it selection to the whole text.
*
* @returns Returns `true` if the selection was successful.
*/
public selectAll(): boolean {
const range = this.txt.rangeAll();
Iif (!range) return false;
this.cursor.setRange(range);
return true;
}
/**
* Selects a word by extending the selection to the left and right of the point.
*
* @param point Point to the right of which is the starting character of the word.
* @returns Range which contains the word.
*/
public rangeWord(point: Point<T>): Range<T> | undefined {
const char = point.rightChar() || point.leftChar();
Iif (!char) return;
const c = String(char.view())[0];
const predicate: CharPredicate<string> = isLetter(c) ? isLetter : isWhitespace(c) ? isWhitespace : isPunctuation;
const start = this.bow(point, predicate, true);
const end = this.eow(point, predicate, true);
return this.txt.range(start, end);
}
/**
* Returns a range by expanding the selection to the left and right of the
* given point.
*
* @param point Point from which to start range expansion.
* @param unit Unit of the range expansion.
* @returns Range which contains the specified unit.
*/
public range(point: Point<T>, unit: TextRangeUnit): Range<T> | undefined {
if (unit === 'word') return this.rangeWord(point);
const point1 = this.skip(point, -1, unit);
const point2 = this.skip(point, 1, unit);
return this.txt.range(point1, point2);
}
public select(unit: TextRangeUnit): void {
this.forCursor((cursor) => {
const range = this.range(cursor.start, unit);
if (range) cursor.set(range.start, range.end, CursorAnchor.Start);
else Ethis.delCursors;
});
}
public selectAt(at: Position<T>, unit: TextRangeUnit | ''): void {
this.cursor.set(this.point(at));
if (unit) this.select(unit);
}
// --------------------------------------------------------------- formatting
protected toggleRangeExclFmt(
range: Range<T>,
type: CommonSliceType | string | number,
data?: unknown,
store: EditorSlices<T> = this.saved,
): void {
Iif (range.isCollapsed()) throw new Error('Range is collapsed');
const txt = this.txt;
const overlay = txt.overlay;
const [complete] = overlay.stat(range, 1e6);
const needToRemoveFormatting = complete.has(type);
makeRangeExtendable(range);
const contained = overlay.findContained(range);
for (const slice of contained) Iif (slice instanceof PersistedSlice && slice.type === type) slice.del();
Iif (needToRemoveFormatting) {
overlay.refresh();
const [complete2, partial2] = overlay.stat(range, 1e6);
const needsErase = complete2.has(type) || partial2.has(type);
Iif (needsErase) store.slices.insErase(range, type);
} else {
Iif (range.start.isAbs()) {
const start = txt.pointStart();
Iif (!start) return;
Iif (start.cmpSpatial(range.end) >= 0) return;
range.start = start;
}
Iif (range.end.isAbs()) {
const end = txt.pointEnd();
Iif (!end) return;
Iif (end.cmpSpatial(range.start) <= 0) return;
range.end = end;
}
store.slices.insOverwrite(range, type, data);
}
}
public toggleExclFmt(
type: CommonSliceType | string | number,
data?: unknown,
store: EditorSlices<T> = this.saved,
): void {
// TODO: handle mutually exclusive slices (<sub>, <sub>)
this.txt.overlay.refresh();
CURSORS: for (let i = this.cursors0(), cursor = i(); cursor; cursor = i()) {
Iif (cursor.isCollapsed()) {
const pending = this.pending.value;
if (pending.has(type)) pending.delete(type);
else pending.set(type, data);
this.pending.next(pending);
continue CURSORS;
}
this.toggleRangeExclFmt(cursor, type, data, store);
}
}
public eraseFormatting(store: EditorSlices<T> = this.saved): void {
const overlay = this.txt.overlay;
for (let i = this.cursors0(), cursor = i(); cursor; cursor = i()) {
overlay.refresh();
const contained = overlay.findContained(cursor);
for (const slice of contained) {
Iif (slice instanceof PersistedSlice) {
switch (slice.behavior) {
case SliceBehavior.One:
case SliceBehavior.Many:
case SliceBehavior.Erase:
slice.del();
}
}
}
overlay.refresh();
const overlapping = overlay.findOverlapping(cursor);
for (const slice of overlapping) {
switch (slice.behavior) {
case SliceBehavior.One:
case SliceBehavior.Many: {
store.insErase(slice.type);
}
}
}
}
}
public clearFormatting(store: EditorSlices<T> = this.saved): void {
const overlay = this.txt.overlay;
overlay.refresh();
for (let i = this.cursors0(), cursor = i(); cursor; cursor = i()) {
const overlapping = overlay.findOverlapping(cursor);
for (const slice of overlapping) store.del(slice.id);
}
}
public split(type?: SliceType, data?: unknown, slices: EditorSlices<T> = this.saved): void {
for (let i = this.cursors0(), cursor = i(); cursor; cursor = i()) {
this.collapseCursor(cursor);
Iif (type === void 0) {
// TODO: detect current block type
type = CommonSliceType.p;
}
slices.insMarker(type, data);
cursor.move(1);
}
}
// ---------------------------------------------------------- export / import
public export(range: Range<T>): ViewRange {
const r = range.range();
r.start.refBefore();
r.end.refAfter();
const text = r.text();
const offset = r.start.viewPos();
const viewSlices: ViewSlice[] = [];
const view: ViewRange = [text, offset, viewSlices];
const txt = this.txt;
const overlay = txt.overlay;
const slices = overlay.findOverlapping(r);
for (const slice of slices) {
const isSavedSlice = slice.id.sid === txt.model.clock.sid;
if (!isSavedSlice) continue;
const behavior = slice.behavior;
switch (behavior) {
case SliceBehavior.One:
case SliceBehavior.Many:
case SliceBehavior.Erase:
case SliceBehavior.Marker: {
const {behavior, type, start, end} = slice;
const header: number =
(behavior << SliceHeaderShift.Behavior) +
(start.anchor << SliceHeaderShift.X1Anchor) +
(end.anchor << SliceHeaderShift.X2Anchor);
const viewSlice: ViewSlice = [header, start.viewPos(), end.viewPos(), type];
const data = slice.data();
Iif (data !== void 0) viewSlice.push(data);
viewSlices.push(viewSlice);
}
}
}
return view;
}
public import(pos: number, view: ViewRange): void {
const [text, offset, slices] = view;
const txt = this.txt;
const length = slices.length;
const splits: ViewSlice[] = [];
const annotations: ViewSlice[] = [];
const texts: string[] = [];
let start = 0;
for (let i = 0; i < length; i++) {
const slice = slices[i];
const [header, x1] = slice;
const behavior: SliceBehavior = (header & SliceHeaderMask.Behavior) >>> SliceHeaderShift.Behavior;
if (behavior === SliceBehavior.Marker) {
const end = x1 - offset;
texts.push(text.slice(start, end));
start = end + 1;
splits.push(slice);
} else annotations.push(slice);
}
const lastText = text.slice(start);
const splitLength = splits.length;
start = pos;
for (let i = 0; i < splitLength; i++) {
const str = texts[i];
const split = splits[i];
if (str) {
txt.insAt(start, str);
start += str.length;
}
if (split) {
const [, , , type, data] = split;
const after = txt.pointAt(start);
after.refAfter();
txt.savedSlices.insMarkerAfter(after.id, type, data);
start += 1;
}
}
if (lastText) txt.insAt(start, lastText);
const annotationsLength = annotations.length;
for (let i = 0; i < annotationsLength; i++) {
const slice = annotations[i];
const [header, x1, x2, type, data] = slice;
const anchor1: Anchor = (header & SliceHeaderMask.X1Anchor) >>> SliceHeaderShift.X1Anchor;
const anchor2: Anchor = (header & SliceHeaderMask.X2Anchor) >>> SliceHeaderShift.X2Anchor;
const behavior: SliceBehavior = (header & SliceHeaderMask.Behavior) >>> SliceHeaderShift.Behavior;
const x1Src = x1 - offset;
const x2Src = x2 - offset;
const x1Capped = Math.max(0, x1Src);
const x2Capped = Math.min(text.length, x2Src);
const x1Dest = x1Capped + pos;
const annotationLength = x2Capped - x1Capped;
const range = txt.rangeAt(x1Dest, annotationLength);
if (!!x1Dest && anchor1 === Anchor.After) range.start.refAfter();
// else range.start.refBefore();
if (anchor2 === Anchor.Before) range.end.refBefore();
// else range.end.refAfter();
if (range.end.isAbs()) range.end.refAfter();
txt.savedSlices.ins(range, behavior, type, data);
}
}
// ------------------------------------------------------------------ various
public point(at: Position<T>): Point<T> {
return typeof at === 'number' ? this.txt.pointAt(at) : Array.isArray(at) ? this.txt.pointAt(at[0], at[1]) : at;
}
public end(): Point<T> {
const txt = this.txt;
return txt.pointEnd() ?? txt.pointAbsEnd();
}
public start(): Point<T> {
const txt = this.txt;
return txt.pointStart() ?? txt.pointAbsStart();
}
// ---------------------------------------------------------------- Printable
public toString(tab: string = ''): string {
const pending = this.pending.value;
const pendingFormatted = {} as any;
for (const [type, data] of pending) pendingFormatted[formatType(type)] = data;
return (
'Editor' +
printTree(tab, [
(tab) =>
'cursors' +
printTree(
tab,
[...this.cursors()].map((cursor) => (tab) => cursor.toString(tab)),
),
() => `pending ${stringify(pendingFormatted)}`,
])
);
}
}
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