342 lines
11 KiB
TypeScript
342 lines
11 KiB
TypeScript
/**
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* Copyright (c) 2016 Aleksi 'Allexit' Talarmo
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*
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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namespace Jash {
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export class SH implements JSTerminal.Program, TerminalInput.KeyListener, Std.Input, Std.Output {
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terminal: JSTerminal.Terminal;
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stdio: Std.IO;
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cursor: {x: number, y: number} = {x: 0, y: 0};
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scroll: number = 0;
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messages: JSTerminal.Character[][] = [];
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defaultStyle = "";
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currentPrintStyle = "";
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listenerId = 0;
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currentReadlines: Std.Readline[] = [];
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currentReadline = "";
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/**
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* Inherited from Program-interface. Not to be manually called.
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*/
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create(terminal: JSTerminal.Terminal, stdio: Std.IO, args?: string[]) {
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this.terminal = terminal;
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this.stdio = stdio;
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this.stdio.setOutput(this);
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this.stdio.setInput(this);
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this.stdio.addListener(this);
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}
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/**
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* Inherited from Program-interface. Not to be manually called.
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*/
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enable() {
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this.refresh();
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if (this.listenerId < 0) {
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this.stdio.addListener(this);
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}
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}
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/**
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* Inherited from Program-interface. Not to be manually called.
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*/
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disable() {
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if (this.listenerId >= 0) {
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this.stdio.removeListener(this.listenerId);
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this.listenerId = -1;
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}
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}
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/**
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* Inherited from Program-interface. Not to be manually called.
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*/
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onClose() {
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if (this.listenerId >= 0) {
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this.stdio.removeListener(this.listenerId);
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this.listenerId = -1;
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}
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return true;
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}
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/**
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* Inherited from TerminalInput.KeyListener-interface. Not to be manually called.
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*/
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onListen(listenerId: number) {
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this.listenerId = listenerId;
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}
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/**
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* Inherited from TerminalInput.KeyListener-interface. Not to be manually called.
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*/
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handleKeypress(keypress: JQueryKeyEventObject) {
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}
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/**
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* Inherited from TerminalInput.KeyListener-interface. Not to be manually called.
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*/
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handleKeydown(keydown: JQueryKeyEventObject) {
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if (this.currentReadlines.length == 0) { return; }
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let key = keydown.key
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if (key.length == 1) {
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this.currentReadline += key;
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if (this.currentReadlines[0].onChangeCallback !== undefined) {
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this.currentReadlines[0].onChangeCallback(this.currentReadline);
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}
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if (key == "/") {
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keydown.preventDefault();
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}
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}
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else {
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switch (keydown.keyCode) {
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case (32): {
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this.currentReadline += " ";
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if (this.currentReadlines[0].onChangeCallback !== undefined) {
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this.currentReadlines[0].onChangeCallback(this.currentReadline);
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}
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break;
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}
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case (8): {
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this.currentReadline = this.currentReadline.substr(0, this.currentReadline.length - 1);
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if (this.currentReadlines[0].onChangeCallback !== undefined) {
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this.currentReadlines[0].onChangeCallback(this.currentReadline);
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}
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keydown.preventDefault();
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break;
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}
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case (13): {
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let currReadline = this.currentReadlines[0];
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if (currReadline.printAfterDone) {
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let text = currReadline.prefix + this.currentReadline;
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this.print(text, currReadline.style);
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}
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this.currentReadlines.shift().callback(this.currentReadline);
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this.currentReadline = "";
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}
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case (0): {
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if (keydown.key == "Dead") {
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this.currentReadline += "~";
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if (this.currentReadlines[0].onChangeCallback !== undefined) {
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this.currentReadlines[0].onChangeCallback(this.currentReadline);
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}
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}
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}
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}
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}
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this.refresh();
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}
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/**
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* Inherited from TerminalInput.KeyListener-interface. Not to be manually called.
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*/
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handleKeyup(keyup: JQueryKeyEventObject) {
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}
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/**
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* Inherited from Std.Input-interface. Not to be manually called.
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*/
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readline(readline: Std.Readline) {
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this.currentReadline = readline.default || "";
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this.currentReadlines.push(readline);
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this.refresh();
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}
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/**
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* Inherited from Std.Output-interface. Not to be manually called.
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*/
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print(text: string, style?: string) {
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style = style || this.currentPrintStyle || this.defaultStyle;
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let isAtEnd = (this.messages.length - this.terminal.height - this.scroll) <= 0
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for (let i = 0; i < text.length; i++) {
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let char = text[i];
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if (char == "\n") {
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if (this.cursor.y != 0 || this.cursor.x != 0) {
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this.moveCursorNewline();
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}
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continue;
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}
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this.putCharacter(new JSTerminal.Character(char, style));
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}
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if (this.messages.length > this.terminal.height) {
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this.scroll = this.messages.length - this.terminal.height;
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}
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}
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/**
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* Inherited from Std.Output-interface. Not to be manually called.
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*/
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println(text: string, style?: string) {
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this.print("\n" + text, style || this.currentPrintStyle || this.defaultStyle);
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}
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/**
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* Inherited from Std.Output-interface. Not to be manually called.
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*/
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clear(style?: string) {
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this.messages = [];
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this.scroll = 0;
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}
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/**
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* Inherited from Std.Output-interface. Not to be manually called.
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*/
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refresh(alsoRenderTerminal: boolean = true) {
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this.terminal.clearScreen(this.defaultStyle);
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let toDraw: JSTerminal.Character[][] = [];
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let messages: JSTerminal.Character[][] = [];
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for (let i in this.messages) {
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messages.push(this.messages[i].slice());
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}
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if (this.currentReadlines.length > 0 && !this.currentReadlines[0].hidden) {
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let readline = this.currentReadlines[0];
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let readlinePart = (readline.prefix || "") + this.currentReadline;
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let tempCursorPos = {x: this.cursor.x, y: this.cursor.y};
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for (let i = 0; i < readlinePart.length; i++) {
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let char = readlinePart[i];
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if (char == "\n") {
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this.moveCursorNewline();
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continue;
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}
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this.putCharacterTo(
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new JSTerminal.Character(char, (readline.style || this.defaultStyle)),
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messages);
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}
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this.cursor = tempCursorPos;
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}
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let start = messages.length - 1;
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for (let i = this.scroll;
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i < messages.length && toDraw.length < this.terminal.height;
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i++) {
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if (i < 0 || messages[i].length == 0) { toDraw.push([]); continue; }
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let rows = Math.ceil(messages[i].length/this.terminal.width);
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for (let r = 0; r < rows; r++) {
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toDraw.push(
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messages[i].slice(
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r * this.terminal.width,
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(r + 1) * this.terminal.width));
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}
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}
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toDraw = toDraw.slice(-this.terminal.height);
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toDraw.forEach((row, y) => {
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row.forEach((c, x) => {
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this.terminal.putTrueChar(c, x, y);
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});
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});
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if (!alsoRenderTerminal) { return; }
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this.terminal.render();
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}
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/**
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* Utility function for print. Prints out one character at cursor.
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*/
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putCharacter(character: JSTerminal.Character) {
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this.putCharacterTo(character, this.messages);
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}
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private putCharacterTo(character: JSTerminal.Character, charArray: JSTerminal.Character[][]) {
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while (this.cursor.y >= charArray.length) {
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charArray.push([]);
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}
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if (this.cursor.x >= charArray[this.cursor.y].length) {
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charArray[this.cursor.y].push(character);
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this.moveCursor(1);
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return;
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}
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charArray[this.cursor.y][this.cursor.x] = character;
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this.moveCursor(1);
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}
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/**
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* Removes a character and moves the cursor backwards.
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*/
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removeCharacter() {
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if (this.messages[this.cursor.y] == []) {
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let rowToRemove = this.cursor.y;
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this.moveCursor(-1);
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this.messages.splice(this.cursor.y, 1);
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return;
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}
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let toRemove = {x: this.cursor.x, y: this.cursor.y};
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this.moveCursor(-1);
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this.messages[toRemove.y].splice(toRemove.x - 1, 1);
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}
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/**
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* Set the default style to be used when printing and clearing the screen.
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*/
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setDefaultStyle(style: string) {
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this.defaultStyle = style;
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}
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/**
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* Set the current 'default' style for printing.
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* This is only temporary and can be reversed with calling it with a null-parameter.
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*/
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setStyle(style: string) {
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this.currentPrintStyle = style;
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}
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/**
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* Moves the cursor by 'amount' forwards or backwards.
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* Handles text wrapping.
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*/
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moveCursor(amount: number) {
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this.cursor.x += amount;
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this.cursor.y += Math.floor((this.cursor.x)/(this.terminal.width));
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this.cursor.x = this.cursor.x % (this.terminal.width);
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if (this.cursor.x < 0) {
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this.cursor.x = this.messages[this.cursor.y].length - 1 - this.cursor.x;
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}
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}
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/*
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* Moves the cursor vertically by amount. Works weirdly if cursor.x not handled manually.
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*/
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moveCursorVertically(amount: number) {
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this.cursor.y += amount;
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}
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/*
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* Moves the cursor down to the next line and sets the x to 0.
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*/
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moveCursorNewline() {
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this.moveCursorVertically(1);
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this.cursor.x = 0;
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}
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/*
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* Does the opposite as moveCursorNewline
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*/
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moveCursorPreviousLine() {
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this.moveCursorVertically(-1);
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this.cursor.x = this.terminal.width - 1;
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}
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}
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}
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