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Add arrow history (fix #2)

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Daniel Kluge 2022-01-14 17:44:52 +01:00
parent 36b0b16059
commit 5846e5241d
1 changed files with 40 additions and 8 deletions
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48
components/REPL/REPLInput.tsx
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@ -1,5 +1,5 @@
import type { NextPage } from "next"; import type { NextPage } from "next";
import React, { MutableRefObject } from "react"; import { MutableRefObject, useState, createRef } from "react";
import { CommandInterface } from "../../lib/commands"; import { CommandInterface } from "../../lib/commands";
import styles from "../../styles/REPL/REPLInput.module.css"; import styles from "../../styles/REPL/REPLInput.module.css";
@ -14,10 +14,12 @@ interface REPLInputParams {
} }
const REPLInput: NextPage<REPLInputParams> = ({historyCallback, historyClear, inputRef, modalManipulation}) => { const REPLInput: NextPage<REPLInputParams> = ({historyCallback, historyClear, inputRef, modalManipulation}) => {
const typed = React.createRef<HTMLSpanElement>(); const typed = createRef<HTMLSpanElement>();
const completion = React.createRef<HTMLSpanElement>(); const completion = createRef<HTMLSpanElement>();
const [currentCmd, setCurrentCmd] = React.useState<string[]>([]); const [currentCmd, setCurrentCmd] = useState<string[]>([]);
const [justTabbed, setJustTabbed] = React.useState<number>(0); const [justTabbed, setJustTabbed] = useState<number>(0);
const [inCmdHistory, setInCmdHistory] = useState<number>(-1);
const [cmdHistory, setCmdHistory] = useState<string[]>([]);
const cmdIf = new CommandInterface(modalManipulation); const cmdIf = new CommandInterface(modalManipulation);
const clearInput = (inputRef: HTMLInputElement) => { const clearInput = (inputRef: HTMLInputElement) => {
@ -52,8 +54,10 @@ const REPLInput: NextPage<REPLInputParams> = ({historyCallback, historyClear, in
const keyEvent = (e: React.KeyboardEvent<HTMLInputElement>) => { const keyEvent = (e: React.KeyboardEvent<HTMLInputElement>) => {
const input = (e.target as HTMLInputElement); const input = (e.target as HTMLInputElement);
if (e.key === "Tab" && currentCmd.length !== 0) { if (e.key === "Tab") {
e.preventDefault(); e.preventDefault();
}
if (e.key === "Tab" && currentCmd.length !== 0) {
input.value = currentCmd[justTabbed % currentCmd.length]; input.value = currentCmd[justTabbed % currentCmd.length];
if(typed.current) typed.current.innerHTML = currentCmd[justTabbed % currentCmd.length]; if(typed.current) typed.current.innerHTML = currentCmd[justTabbed % currentCmd.length];
if(completion.current) completion.current.innerHTML = ""; if(completion.current) completion.current.innerHTML = "";
@ -64,13 +68,15 @@ const REPLInput: NextPage<REPLInputParams> = ({historyCallback, historyClear, in
if (e.key === "Enter") { if (e.key === "Enter") {
e.preventDefault(); e.preventDefault();
const command = (e.target as HTMLInputElement).value; const command = (e.target as HTMLInputElement).value;
if (command === "clear") { setCmdHistory(cmdHistory.concat([command]).splice(0, 100));
clearInput(input); clearInput(input);
setInCmdHistory(-1);
setCurrentCmd([]);
if (command === "clear") {
historyClear(); historyClear();
return false; return false;
} }
const result = cmdIf.executeCommand(command); const result = cmdIf.executeCommand(command);
clearInput(input);
historyCallback(result); historyCallback(result);
return false; return false;
} }
@ -96,6 +102,32 @@ const REPLInput: NextPage<REPLInputParams> = ({historyCallback, historyClear, in
return false; return false;
} }
if (e.key === "ArrowUp") {
e.preventDefault();
const idx = inCmdHistory + 1;
if (idx < cmdHistory.length) {
const cmd = cmdHistory[cmdHistory.length - idx - 1];
input.value = cmd;
if(typed.current) typed.current.innerHTML = cmd;
if(completion.current) completion.current.innerHTML = "";
setInCmdHistory(idx);
}
}
if (e.key === "ArrowDown") {
e.preventDefault();
const idx = inCmdHistory - 1;
if (0 <= idx) {
const cmd = cmdHistory[cmdHistory.length - idx - 1];
input.value = cmd;
if(typed.current) typed.current.innerHTML = cmd;
if(completion.current) completion.current.innerHTML = "";
setInCmdHistory(idx);
} else {
clearInput(input);
}
}
}; };
return <div className={styles.wrapperwrapper}> return <div className={styles.wrapperwrapper}>