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@ -8,170 +8,108 @@ import {
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ctrlKey,
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isControl,
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maxAdd,
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none,
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posSub,
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readKey,
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some,
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strlen,
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truncate,
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} from './fns.ts';
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import { log, LogLevel } from './runtime.ts';
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import { getRuntime, log, LogLevel } from './runtime.ts';
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import { ITerminalSize, Position } from './types.ts';
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export enum EditorMode {
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Normal = 'Normal',
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Find = 'Find',
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Save = 'Save',
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Prompt = 'Prompt',
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}
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class Prompt {
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private constructor(
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public basePrompt: string,
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private callback: (query: string, char: string) => void,
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public key: string = '',
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public answer: string = '',
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) {}
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public static from(
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basePrompt: string,
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callback: (query: string, char: string) => void = (
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query: string,
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key: string,
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) => {
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log('Default prompt callback', LogError.Warning);
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},
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): Prompt {
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return new Prompt(basePrompt, callback);
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}
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public backspace(): void {
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this.answer = truncate(this.answer, strlen(this.answer) - 1);
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}
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public append(char: string): void {
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this.answer += char;
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}
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public cb(): void {
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this.callback(this.answer, this.key);
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}
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public render(): string {
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if (this.basePrompt.includes('%s')) {
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return this.basePrompt.replace('%s', this.answer);
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} else {
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return `${this.basePrompt}${this.answer}`;
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}
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}
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}
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class Editor {
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/**
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* How to handle the stdin stream
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* @private
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*/
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public mode: EditorMode = EditorMode.Normal;
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/**
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* The document being edited
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* @private
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*/
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public document: Document;
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#document: Document;
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/**
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* The output buffer for the terminal
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* @private
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*/
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protected buffer: Buffer;
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#buffer: Buffer;
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/**
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* The size of the screen in rows/columns
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* @private
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*/
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protected screen: ITerminalSize;
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#screen: ITerminalSize;
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/**
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* The current location of the mouse cursor
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* @private
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*/
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protected cursor: Position;
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#cursor: Position;
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/**
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* The current scrolling offset
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*/
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protected offset: Position;
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#offset: Position;
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/**
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* The scrolling offset for the rendered row
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* @private
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*/
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protected renderX: number = 0;
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#renderX: number = 0;
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/**
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* The name of the currently open file
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* @private
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*/
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protected filename: string = '';
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/**
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* Current input prompt state
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*/
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public _prompt: Prompt | null = null;
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#filename: string = '';
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/**
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* A message to display at the bottom of the screen
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* @private
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*/
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public statusMessage: string = '';
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#statusMessage: string = '';
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/**
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* Timeout for status messages
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* @private
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*/
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protected statusTimeout: number = 0;
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#statusTimeout: number = 0;
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/**
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* The number of times required to quit a dirty document
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* @private
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*/
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protected quitTimes: number = SCROLL_QUIT_TIMES;
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#quitTimes: number = SCROLL_QUIT_TIMES;
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constructor(terminalSize: ITerminalSize) {
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this.buffer = new Buffer();
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this.#buffer = new Buffer();
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// Subtract two rows from the terminal size
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// for displaying the status bar
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// and message bar
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this.screen = terminalSize;
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this.screen.rows -= 2;
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this.#screen = terminalSize;
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this.#screen.rows -= 2;
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this.cursor = Position.default();
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this.offset = Position.default();
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this.document = Document.default();
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this.#cursor = Position.default();
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this.#offset = Position.default();
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this.#document = Document.default();
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}
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private get numRows(): number {
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return this.document.numRows;
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return this.#document.numRows;
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}
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private get currentRow(): Row | null {
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return this.document.row(this.cursor.y);
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return this.#document.row(this.#cursor.y);
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}
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public async open(filename: string): Promise<Editor> {
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await this.document.open(filename);
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this.filename = filename;
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await this.#document.open(filename);
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this.#filename = filename;
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return this;
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}
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public async save(): Promise<void> {
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if (this.filename !== '') {
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await this.document.save(this.filename);
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this.setStatusMessage(`${this.filename} was saved to disk.`);
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return;
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if (this.#filename === '') {
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const filename = await this.prompt('Save as: %s (ESC to cancel)');
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if (filename === null) {
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this.setStatusMessage('Save aborted');
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return;
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}
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this.#filename = filename;
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}
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this.prompt('Save as: %s (ESC to cancel)', (name: string, key: string) => {
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if (key === KeyCommand.Enter) {
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this.mode = EditorMode.Normal;
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this.filename = name;
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return this.save();
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}
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if (name === null || key === KeyCommand.Escape) {
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this.mode = EditorMode.Normal;
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this.setStatusMessage('Save aborted');
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}
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});
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await this.#document.save(this.#filename);
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this.setStatusMessage(`${this.#filename} was saved to disk.`);
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}
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// --------------------------------------------------------------------------
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@ -183,96 +121,204 @@ class Editor {
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* @param input - the decoded chunk of stdin
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*/
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public async processKeyPress(input: string): Promise<boolean> {
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switch (this.mode) {
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case EditorMode.Find:
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log(this, LogLevel.Debug);
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// this._prompt = Prompt.from('Search: %s (Use ESC/Arrows/Enter)');
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this.find();
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this.processPromptKeyPress(input);
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// this.find();
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return true;
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switch (input) {
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// ----------------------------------------------------------------------
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// Ctrl-key chords
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// ----------------------------------------------------------------------
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case ctrlKey('f'):
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await this.find();
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break;
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case EditorMode.Save:
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log(this, LogLevel.Debug);
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this.save();
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this.processPromptKeyPress(input);
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// this.save();
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return true;
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case ctrlKey('s'):
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await this.save();
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break;
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case EditorMode.Prompt:
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return this.processPromptKeyPress(input);
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case ctrlKey('q'):
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if (this.#quitTimes > 0 && this.#document.dirty) {
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this.setStatusMessage(
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'WARNING!!! File has unsaved changes. ' +
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`Press Ctrl-Q ${this.#quitTimes} more times to quit.`,
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);
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this.#quitTimes--;
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return true;
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}
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await this.clearScreen();
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return false;
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case EditorMode.Normal: // fall through
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default:
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return this.processNormalKeyPress(input);
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}
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// ----------------------------------------------------------------------
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// Movement keys
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// ----------------------------------------------------------------------
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await this.refreshScreen();
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}
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case KeyCommand.Home:
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this.#cursor.x = 0;
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break;
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public prompt(
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p: string,
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callback: (query: string, char: string) => void,
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): string | null {
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if (this._prompt === null) {
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this._prompt = Prompt.from(p, callback);
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}
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switch (this._prompt.key) {
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// End the prompt
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case KeyCommand.Escape:
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this.mode = EditorMode.Normal;
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this.setStatusMessage('');
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return null;
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// Return the input and end the prompt
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case KeyCommand.Enter:
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this.mode = EditorMode.Normal;
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if (this._prompt.answer.length > 0) {
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this.setStatusMessage('');
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return this._prompt.answer;
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case KeyCommand.End:
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if (this.currentRow !== null) {
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this.#cursor.x = this.currentRow.size;
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}
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break;
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default:
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// Nothing to do here
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case KeyCommand.PageUp:
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case KeyCommand.PageDown:
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{
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if (input === KeyCommand.PageUp) {
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this.#cursor.y = this.#offset.y;
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} else if (input === KeyCommand.PageDown) {
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this.#cursor.y = maxAdd(
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this.#offset.y,
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this.#screen.rows - 1,
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this.numRows,
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);
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}
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let times = this.#screen.rows;
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while (times--) {
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this.moveCursor(
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input === KeyCommand.PageUp
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? KeyCommand.ArrowUp
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: KeyCommand.ArrowDown,
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);
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}
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}
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break;
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case KeyCommand.ArrowUp:
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case KeyCommand.ArrowDown:
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case KeyCommand.ArrowRight:
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case KeyCommand.ArrowLeft:
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this.moveCursor(input);
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break;
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// ----------------------------------------------------------------------
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// Text manipulation keys
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// ----------------------------------------------------------------------
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case KeyCommand.Enter:
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this.#document.insertNewline(this.#cursor);
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this.#cursor.x = 0;
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this.#cursor.y++;
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break;
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case KeyCommand.Delete:
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this.#document.delete(this.#cursor);
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break;
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case KeyCommand.Backspace:
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{
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if (this.#cursor.x > 0 || this.#cursor.y > 0) {
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this.moveCursor(KeyCommand.ArrowLeft);
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this.#document.delete(this.#cursor);
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}
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}
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break;
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// ----------------------------------------------------------------------
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// Direct input
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// ----------------------------------------------------------------------
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default: {
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if (!this.shouldFilter(input)) {
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this.#document.insert(this.#cursor, input);
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this.#cursor.x++;
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}
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}
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}
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return this._prompt.answer ?? null;
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if (this.#quitTimes < SCROLL_QUIT_TIMES) {
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this.#quitTimes = SCROLL_QUIT_TIMES;
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this.setStatusMessage('');
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}
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return true;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
public async prompt(
|
|
|
|
|
p: string,
|
|
|
|
|
callback?: (query: string, char: string) => void,
|
|
|
|
|
): Promise<string | null> {
|
|
|
|
|
const { term } = await getRuntime();
|
|
|
|
|
|
|
|
|
|
let res = '';
|
|
|
|
|
const maybeCallback = (query: string, char: string) => {
|
|
|
|
|
if (callback !== undefined) {
|
|
|
|
|
callback(query, char);
|
|
|
|
|
}
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
outer: while (true) {
|
|
|
|
|
if (p.includes('%s')) {
|
|
|
|
|
this.setStatusMessage(p.replace('%s', res));
|
|
|
|
|
} else {
|
|
|
|
|
this.setStatusMessage(`${p}${res}`);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
await this.refreshScreen();
|
|
|
|
|
for await (const chunk of term.inputLoop()) {
|
|
|
|
|
const char = readKey(chunk);
|
|
|
|
|
if (none(char)) {
|
|
|
|
|
continue;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
switch (char) {
|
|
|
|
|
// Remove the last character from the prompt input
|
|
|
|
|
case KeyCommand.Backspace:
|
|
|
|
|
case KeyCommand.Delete:
|
|
|
|
|
res = truncate(res, res.length - 1);
|
|
|
|
|
maybeCallback(res, char);
|
|
|
|
|
continue outer;
|
|
|
|
|
|
|
|
|
|
// End the prompt
|
|
|
|
|
case KeyCommand.Escape:
|
|
|
|
|
this.setStatusMessage('');
|
|
|
|
|
maybeCallback(res, char);
|
|
|
|
|
|
|
|
|
|
return null;
|
|
|
|
|
|
|
|
|
|
// Return the input and end the prompt
|
|
|
|
|
case KeyCommand.Enter:
|
|
|
|
|
if (res.length > 0) {
|
|
|
|
|
this.setStatusMessage('');
|
|
|
|
|
maybeCallback(res, char);
|
|
|
|
|
return res;
|
|
|
|
|
}
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
|
|
// Add to the prompt result
|
|
|
|
|
default:
|
|
|
|
|
if (!isControl(char)) {
|
|
|
|
|
res += char;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
maybeCallback(res, char);
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* Find text within the document. This is roughly equivalent to the
|
|
|
|
|
* `editorFindCallback` function in the kilo tutorial.
|
|
|
|
|
*/
|
|
|
|
|
public find(): void {
|
|
|
|
|
const savedCursor = Position.from(this.cursor);
|
|
|
|
|
const savedOffset = Position.from(this.offset);
|
|
|
|
|
public async find(): Promise<void> {
|
|
|
|
|
const savedCursor = Position.from(this.#cursor);
|
|
|
|
|
const savedOffset = Position.from(this.#offset);
|
|
|
|
|
|
|
|
|
|
this.prompt(
|
|
|
|
|
const query = await this.prompt(
|
|
|
|
|
'Search: %s (Use ESC/Arrows/Enter)',
|
|
|
|
|
(query: string, key: string) => {
|
|
|
|
|
if (key === KeyCommand.Enter || key === KeyCommand.Escape) {
|
|
|
|
|
this.mode = EditorMode.Normal;
|
|
|
|
|
if (key === KeyCommand.Escape) {
|
|
|
|
|
this.document.resetFind();
|
|
|
|
|
// Return to document position before search
|
|
|
|
|
// when you cancel the search (press the escape key)
|
|
|
|
|
if (query === null) {
|
|
|
|
|
this.cursor = Position.from(savedCursor);
|
|
|
|
|
this.offset = Position.from(savedOffset);
|
|
|
|
|
}
|
|
|
|
|
this.#document.resetFind();
|
|
|
|
|
}
|
|
|
|
|
return null;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
if (query.length > 0) {
|
|
|
|
|
const pos = this.document.find(query, key);
|
|
|
|
|
if (some(query) && query.length > 0) {
|
|
|
|
|
const pos = this.#document.find(query, key);
|
|
|
|
|
if (pos !== null) {
|
|
|
|
|
// We have a match here
|
|
|
|
|
this.cursor = pos;
|
|
|
|
|
this.#cursor = pos;
|
|
|
|
|
this.scroll();
|
|
|
|
|
} else {
|
|
|
|
|
this.setStatusMessage('Not found');
|
|
|
|
@ -280,6 +326,13 @@ class Editor {
|
|
|
|
|
}
|
|
|
|
|
},
|
|
|
|
|
);
|
|
|
|
|
|
|
|
|
|
// Return to document position before search
|
|
|
|
|
// when you cancel the search (press the escape key)
|
|
|
|
|
if (query === null) {
|
|
|
|
|
this.#cursor = Position.from(savedCursor);
|
|
|
|
|
this.#offset = Position.from(savedOffset);
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
@ -309,61 +362,63 @@ class Editor {
|
|
|
|
|
private moveCursor(char: string): void {
|
|
|
|
|
switch (char) {
|
|
|
|
|
case KeyCommand.ArrowLeft:
|
|
|
|
|
if (this.cursor.x > 0) {
|
|
|
|
|
this.cursor.x--;
|
|
|
|
|
} else if (this.cursor.y > 0) {
|
|
|
|
|
this.cursor.y--;
|
|
|
|
|
this.cursor.x = (this.currentRow !== null) ? this.currentRow.size : 0;
|
|
|
|
|
if (this.#cursor.x > 0) {
|
|
|
|
|
this.#cursor.x--;
|
|
|
|
|
} else if (this.#cursor.y > 0) {
|
|
|
|
|
this.#cursor.y--;
|
|
|
|
|
this.#cursor.x = (this.currentRow !== null)
|
|
|
|
|
? this.currentRow.size
|
|
|
|
|
: 0;
|
|
|
|
|
}
|
|
|
|
|
break;
|
|
|
|
|
case KeyCommand.ArrowRight:
|
|
|
|
|
if (
|
|
|
|
|
this.currentRow !== null && this.cursor.x < this.currentRow.size
|
|
|
|
|
this.currentRow !== null && this.#cursor.x < this.currentRow.size
|
|
|
|
|
) {
|
|
|
|
|
this.cursor.x++;
|
|
|
|
|
this.#cursor.x++;
|
|
|
|
|
} else if (
|
|
|
|
|
this.currentRow !== null &&
|
|
|
|
|
this.cursor.x === this.currentRow.size
|
|
|
|
|
this.#cursor.x === this.currentRow.size
|
|
|
|
|
) {
|
|
|
|
|
this.cursor.y++;
|
|
|
|
|
this.cursor.x = 0;
|
|
|
|
|
this.#cursor.y++;
|
|
|
|
|
this.#cursor.x = 0;
|
|
|
|
|
}
|
|
|
|
|
break;
|
|
|
|
|
case KeyCommand.ArrowUp:
|
|
|
|
|
if (this.cursor.y > 0) {
|
|
|
|
|
this.cursor.y--;
|
|
|
|
|
if (this.#cursor.y > 0) {
|
|
|
|
|
this.#cursor.y--;
|
|
|
|
|
}
|
|
|
|
|
break;
|
|
|
|
|
case KeyCommand.ArrowDown:
|
|
|
|
|
if (this.cursor.y < this.numRows) {
|
|
|
|
|
this.cursor.y++;
|
|
|
|
|
if (this.#cursor.y < this.numRows) {
|
|
|
|
|
this.#cursor.y++;
|
|
|
|
|
}
|
|
|
|
|
break;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
const rowLen = this.currentRow?.size ?? 0;
|
|
|
|
|
if (this.cursor.x > rowLen) {
|
|
|
|
|
this.cursor.x = rowLen;
|
|
|
|
|
if (this.#cursor.x > rowLen) {
|
|
|
|
|
this.#cursor.x = rowLen;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
private scroll(): void {
|
|
|
|
|
this.renderX = 0;
|
|
|
|
|
this.#renderX = 0;
|
|
|
|
|
if (this.currentRow !== null) {
|
|
|
|
|
this.renderX = this.currentRow.cxToRx(this.cursor.x);
|
|
|
|
|
this.#renderX = this.currentRow.cxToRx(this.#cursor.x);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
if (this.cursor.y < this.offset.y) {
|
|
|
|
|
this.offset.y = this.cursor.y;
|
|
|
|
|
if (this.#cursor.y < this.#offset.y) {
|
|
|
|
|
this.#offset.y = this.#cursor.y;
|
|
|
|
|
}
|
|
|
|
|
if (this.cursor.y >= this.offset.y + this.screen.rows) {
|
|
|
|
|
this.offset.y = this.cursor.y - this.screen.rows + 1;
|
|
|
|
|
if (this.#cursor.y >= this.#offset.y + this.#screen.rows) {
|
|
|
|
|
this.#offset.y = this.#cursor.y - this.#screen.rows + 1;
|
|
|
|
|
}
|
|
|
|
|
if (this.renderX < this.offset.x) {
|
|
|
|
|
this.offset.x = this.renderX;
|
|
|
|
|
if (this.#renderX < this.#offset.x) {
|
|
|
|
|
this.#offset.x = this.#renderX;
|
|
|
|
|
}
|
|
|
|
|
if (this.renderX >= this.offset.x + this.screen.cols) {
|
|
|
|
|
this.offset.x = this.renderX - this.screen.cols + 1;
|
|
|
|
|
if (this.#renderX >= this.#offset.x + this.#screen.cols) {
|
|
|
|
|
this.#offset.x = this.#renderX - this.#screen.cols + 1;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
@ -373,8 +428,8 @@ class Editor {
|
|
|
|
|
|
|
|
|
|
public setStatusMessage(msg: string): void {
|
|
|
|
|
// TODO: consider some sort of formatting for passed strings
|
|
|
|
|
this.statusMessage = msg;
|
|
|
|
|
this.statusTimeout = Date.now();
|
|
|
|
|
this.#statusMessage = msg;
|
|
|
|
|
this.#statusTimeout = Date.now();
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
@ -382,281 +437,106 @@ class Editor {
|
|
|
|
|
*/
|
|
|
|
|
public async refreshScreen(): Promise<void> {
|
|
|
|
|
this.scroll();
|
|
|
|
|
this.buffer.append(Ansi.HideCursor);
|
|
|
|
|
this.buffer.append(Ansi.ResetCursor);
|
|
|
|
|
this.#buffer.append(Ansi.HideCursor);
|
|
|
|
|
this.#buffer.append(Ansi.ResetCursor);
|
|
|
|
|
this.drawRows();
|
|
|
|
|
this.drawStatusBar();
|
|
|
|
|
this.drawMessageBar();
|
|
|
|
|
this.buffer.append(
|
|
|
|
|
this.#buffer.append(
|
|
|
|
|
Ansi.moveCursor(
|
|
|
|
|
this.cursor.y - this.offset.y,
|
|
|
|
|
this.renderX - this.offset.x,
|
|
|
|
|
this.#cursor.y - this.#offset.y,
|
|
|
|
|
this.#renderX - this.#offset.x,
|
|
|
|
|
),
|
|
|
|
|
);
|
|
|
|
|
this.buffer.append(Ansi.ShowCursor);
|
|
|
|
|
this.#buffer.append(Ansi.ShowCursor);
|
|
|
|
|
|
|
|
|
|
await this.buffer.flush();
|
|
|
|
|
await this.#buffer.flush();
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
public async clearScreen(): Promise<void> {
|
|
|
|
|
this.buffer.append(Ansi.ClearScreen);
|
|
|
|
|
this.buffer.append(Ansi.ResetCursor);
|
|
|
|
|
private async clearScreen(): Promise<void> {
|
|
|
|
|
this.#buffer.append(Ansi.ClearScreen);
|
|
|
|
|
this.#buffer.append(Ansi.ResetCursor);
|
|
|
|
|
|
|
|
|
|
await this.buffer.flush();
|
|
|
|
|
await this.#buffer.flush();
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
private drawRows(): void {
|
|
|
|
|
for (let y = 0; y < this.screen.rows; y++) {
|
|
|
|
|
this.buffer.append(Ansi.ClearLine);
|
|
|
|
|
const fileRow = y + this.offset.y;
|
|
|
|
|
for (let y = 0; y < this.#screen.rows; y++) {
|
|
|
|
|
this.#buffer.append(Ansi.ClearLine);
|
|
|
|
|
const fileRow = y + this.#offset.y;
|
|
|
|
|
if (fileRow >= this.numRows) {
|
|
|
|
|
this.drawPlaceholderRow(fileRow);
|
|
|
|
|
} else {
|
|
|
|
|
this.drawFileRow(fileRow);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
this.buffer.appendLine();
|
|
|
|
|
this.#buffer.appendLine();
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
private drawFileRow(y: number): void {
|
|
|
|
|
const row = this.document.row(y);
|
|
|
|
|
const row = this.#document.row(y);
|
|
|
|
|
if (row === null) {
|
|
|
|
|
log(`Trying to draw non-existent row '${y}'`, LogLevel.Warning);
|
|
|
|
|
return this.drawPlaceholderRow(y);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
const len = Math.min(
|
|
|
|
|
posSub(row.rsize, this.offset.x),
|
|
|
|
|
this.screen.cols,
|
|
|
|
|
posSub(row.rsize, this.#offset.x),
|
|
|
|
|
this.#screen.cols,
|
|
|
|
|
);
|
|
|
|
|
|
|
|
|
|
this.buffer.append(row.render(this.offset.x, len));
|
|
|
|
|
this.#buffer.append(row.render(this.#offset.x, len));
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
private drawPlaceholderRow(y: number): void {
|
|
|
|
|
if (y === Math.trunc(this.screen.rows / 2) && this.document.isEmpty()) {
|
|
|
|
|
if (y === Math.trunc(this.#screen.rows / 2) && this.#document.isEmpty()) {
|
|
|
|
|
const message = `Scroll editor -- version ${SCROLL_VERSION}`;
|
|
|
|
|
const messageLen = (message.length > this.screen.cols)
|
|
|
|
|
? this.screen.cols
|
|
|
|
|
const messageLen = (message.length > this.#screen.cols)
|
|
|
|
|
? this.#screen.cols
|
|
|
|
|
: message.length;
|
|
|
|
|
let padding = Math.trunc((this.screen.cols - messageLen) / 2);
|
|
|
|
|
let padding = Math.trunc((this.#screen.cols - messageLen) / 2);
|
|
|
|
|
if (padding > 0) {
|
|
|
|
|
this.buffer.append('~');
|
|
|
|
|
this.#buffer.append('~');
|
|
|
|
|
padding -= 1;
|
|
|
|
|
|
|
|
|
|
this.buffer.append(' '.repeat(padding));
|
|
|
|
|
this.#buffer.append(' '.repeat(padding));
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
this.buffer.append(message, messageLen);
|
|
|
|
|
this.#buffer.append(message, messageLen);
|
|
|
|
|
} else {
|
|
|
|
|
this.buffer.append('~');
|
|
|
|
|
this.#buffer.append('~');
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
private drawStatusBar(): void {
|
|
|
|
|
this.buffer.append(Ansi.InvertColor);
|
|
|
|
|
const name = (this.filename !== '') ? this.filename : '[No Name]';
|
|
|
|
|
const modified = (this.document.dirty) ? '(modified)' : '';
|
|
|
|
|
this.#buffer.append(Ansi.InvertColor);
|
|
|
|
|
const name = (this.#filename !== '') ? this.#filename : '[No Name]';
|
|
|
|
|
const modified = (this.#document.dirty) ? '(modified)' : '';
|
|
|
|
|
const status = `${truncate(name, 20)} - ${this.numRows} lines ${modified}`;
|
|
|
|
|
const rStatus = `${this.cursor.y + 1}/${this.numRows}`;
|
|
|
|
|
let len = Math.min(status.length, this.screen.cols);
|
|
|
|
|
this.buffer.append(status, len);
|
|
|
|
|
const rStatus = `${this.#cursor.y + 1}/${this.numRows}`;
|
|
|
|
|
let len = Math.min(status.length, this.#screen.cols);
|
|
|
|
|
this.#buffer.append(status, len);
|
|
|
|
|
|
|
|
|
|
while (len < this.screen.cols) {
|
|
|
|
|
if (this.screen.cols - len === rStatus.length) {
|
|
|
|
|
this.buffer.append(rStatus);
|
|
|
|
|
while (len < this.#screen.cols) {
|
|
|
|
|
if (this.#screen.cols - len === rStatus.length) {
|
|
|
|
|
this.#buffer.append(rStatus);
|
|
|
|
|
break;
|
|
|
|
|
} else {
|
|
|
|
|
this.buffer.append(' ');
|
|
|
|
|
this.#buffer.append(' ');
|
|
|
|
|
len++;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
this.buffer.appendLine(Ansi.ResetFormatting);
|
|
|
|
|
this.#buffer.appendLine(Ansi.ResetFormatting);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
private drawMessageBar(): void {
|
|
|
|
|
this.buffer.append(Ansi.ClearLine);
|
|
|
|
|
const msgLen = this.statusMessage.length;
|
|
|
|
|
if (msgLen > 0 && (Date.now() - this.statusTimeout < 5000)) {
|
|
|
|
|
this.buffer.append(this.statusMessage, this.screen.cols);
|
|
|
|
|
this.#buffer.append(Ansi.ClearLine);
|
|
|
|
|
const msgLen = this.#statusMessage.length;
|
|
|
|
|
if (msgLen > 0 && (Date.now() - this.#statusTimeout < 5000)) {
|
|
|
|
|
this.#buffer.append(this.#statusMessage, this.#screen.cols);
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
// --------------------------------------------------------------------------
|
|
|
|
|
// Terminal input parsing
|
|
|
|
|
// --------------------------------------------------------------------------
|
|
|
|
|
|
|
|
|
|
private async processNormalKeyPress(input: string): Promise<boolean> {
|
|
|
|
|
switch (input) {
|
|
|
|
|
// ----------------------------------------------------------------------
|
|
|
|
|
// Ctrl-key chords
|
|
|
|
|
// ----------------------------------------------------------------------
|
|
|
|
|
case ctrlKey('f'):
|
|
|
|
|
this.mode = EditorMode.Find;
|
|
|
|
|
// break;
|
|
|
|
|
return this.processKeyPress(input);
|
|
|
|
|
|
|
|
|
|
case ctrlKey('s'):
|
|
|
|
|
this.mode = EditorMode.Save;
|
|
|
|
|
return this.processKeyPress(input);
|
|
|
|
|
|
|
|
|
|
// await this.save();
|
|
|
|
|
// break;
|
|
|
|
|
|
|
|
|
|
case ctrlKey('q'):
|
|
|
|
|
if (this.quitTimes > 0 && this.document.dirty) {
|
|
|
|
|
this.setStatusMessage(
|
|
|
|
|
'WARNING!!! File has unsaved changes. ' +
|
|
|
|
|
`Press Ctrl-Q ${this.quitTimes} more times to quit.`,
|
|
|
|
|
);
|
|
|
|
|
this.quitTimes--;
|
|
|
|
|
return true;
|
|
|
|
|
}
|
|
|
|
|
await this.clearScreen();
|
|
|
|
|
return false;
|
|
|
|
|
|
|
|
|
|
// ----------------------------------------------------------------------
|
|
|
|
|
// Movement keys
|
|
|
|
|
// ----------------------------------------------------------------------
|
|
|
|
|
|
|
|
|
|
case KeyCommand.Home:
|
|
|
|
|
this.cursor.x = 0;
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
|
|
case KeyCommand.End:
|
|
|
|
|
if (this.currentRow !== null) {
|
|
|
|
|
this.cursor.x = this.currentRow.size;
|
|
|
|
|
}
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
|
|
case KeyCommand.PageUp:
|
|
|
|
|
case KeyCommand.PageDown:
|
|
|
|
|
{
|
|
|
|
|
if (input === KeyCommand.PageUp) {
|
|
|
|
|
this.cursor.y = this.offset.y;
|
|
|
|
|
} else if (input === KeyCommand.PageDown) {
|
|
|
|
|
this.cursor.y = maxAdd(
|
|
|
|
|
this.offset.y,
|
|
|
|
|
this.screen.rows - 1,
|
|
|
|
|
this.numRows,
|
|
|
|
|
);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
let times = this.screen.rows;
|
|
|
|
|
while (times--) {
|
|
|
|
|
this.moveCursor(
|
|
|
|
|
input === KeyCommand.PageUp
|
|
|
|
|
? KeyCommand.ArrowUp
|
|
|
|
|
: KeyCommand.ArrowDown,
|
|
|
|
|
);
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
|
|
case KeyCommand.ArrowUp:
|
|
|
|
|
case KeyCommand.ArrowDown:
|
|
|
|
|
case KeyCommand.ArrowRight:
|
|
|
|
|
case KeyCommand.ArrowLeft:
|
|
|
|
|
this.moveCursor(input);
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
|
|
// ----------------------------------------------------------------------
|
|
|
|
|
// Text manipulation keys
|
|
|
|
|
// ----------------------------------------------------------------------
|
|
|
|
|
|
|
|
|
|
case KeyCommand.Enter:
|
|
|
|
|
this.document.insertNewline(this.cursor);
|
|
|
|
|
this.cursor.x = 0;
|
|
|
|
|
this.cursor.y++;
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
|
|
case KeyCommand.Delete:
|
|
|
|
|
this.document.delete(this.cursor);
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
|
|
case KeyCommand.Backspace:
|
|
|
|
|
{
|
|
|
|
|
if (this.cursor.x > 0 || this.cursor.y > 0) {
|
|
|
|
|
this.moveCursor(KeyCommand.ArrowLeft);
|
|
|
|
|
this.document.delete(this.cursor);
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
|
|
// ----------------------------------------------------------------------
|
|
|
|
|
// Direct input
|
|
|
|
|
// ----------------------------------------------------------------------
|
|
|
|
|
|
|
|
|
|
default: {
|
|
|
|
|
if (!this.shouldFilter(input)) {
|
|
|
|
|
this.document.insert(this.cursor, input);
|
|
|
|
|
this.cursor.x++;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
if (this.quitTimes < SCROLL_QUIT_TIMES) {
|
|
|
|
|
this.quitTimes = SCROLL_QUIT_TIMES;
|
|
|
|
|
this.setStatusMessage('');
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
return true;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
private async processPromptKeyPress(char: string): Promise<boolean> {
|
|
|
|
|
log(char, LogLevel.Debug);
|
|
|
|
|
log(this, LogLevel.Debug);
|
|
|
|
|
|
|
|
|
|
if (this._prompt === null) {
|
|
|
|
|
log('Prompt should not be null here', LogLevel.Warning);
|
|
|
|
|
this.mode = EditorMode.Normal;
|
|
|
|
|
|
|
|
|
|
return true;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
this.setStatusMessage(this._prompt.render());
|
|
|
|
|
await this.refreshScreen();
|
|
|
|
|
|
|
|
|
|
this._prompt.key = char;
|
|
|
|
|
switch (char) {
|
|
|
|
|
// Remove the last character from the prompt input
|
|
|
|
|
case KeyCommand.Backspace:
|
|
|
|
|
case KeyCommand.Delete:
|
|
|
|
|
this._prompt.backspace();
|
|
|
|
|
this._prompt.cb();
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
|
|
// End the prompt
|
|
|
|
|
case KeyCommand.Escape:
|
|
|
|
|
this.mode = EditorMode.Normal;
|
|
|
|
|
|
|
|
|
|
this.setStatusMessage('');
|
|
|
|
|
this._prompt.cb();
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
|
|
// Return the input and end the prompt
|
|
|
|
|
case KeyCommand.Enter:
|
|
|
|
|
this.mode = EditorMode.Normal;
|
|
|
|
|
|
|
|
|
|
if (this._prompt.answer.length > 0) {
|
|
|
|
|
this.setStatusMessage('');
|
|
|
|
|
this._prompt.cb();
|
|
|
|
|
}
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
|
|
// Add to the prompt result
|
|
|
|
|
default:
|
|
|
|
|
if (!isControl(char)) {
|
|
|
|
|
this._prompt.append(char);
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
// this.setStatusMessage(this._prompt.render());
|
|
|
|
|
// await this.refreshScreen();
|
|
|
|
|
|
|
|
|
|
return true;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
export default Editor;
|
|
|
|
|