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Implement RIGHT and LEFT keys for cursor navigation in terminal #637

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Implement RIGHT and LEFT keys for cursor navigation in terminal #637

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48ccc27
Implement RIGHT and LEFT keys for cursor navigation in terminal
lukasondrejka Oct 13, 2024
d51cc39
Fix removeInput
lukasondrejka Oct 13, 2024
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35 changes: 23 additions & 12 deletions frontend/src/components/Terminal.vue
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Original file line number Diff line number Diff line change
Expand Up @@ -154,16 +154,17 @@ export default {
},

removeInput() {
const textAfterCursorLength = this.terminalInputBuffer.length - this.cursorPosition;
const spaces = " ".repeat(textAfterCursorLength);
const backspaceCount = this.terminalInputBuffer.length;
const backspaces = "\b \b".repeat(backspaceCount);
this.cursorPosition = 0;
this.terminal.write(backspaces);
this.terminal.write(spaces + backspaces);
this.terminalInputBuffer = "";
},

mainTerminalConfig() {
this.terminal.onKey(e => {
const code = e.key.charCodeAt(0);
console.debug("Encode: " + JSON.stringify(e.key));

if (e.key === "\r") {
Expand All @@ -180,29 +181,39 @@ export default {
this.$root.emitAgent(this.endpoint, "terminalInput", this.name, buffer + e.key, (err) => {
this.$root.toastError(err.msg);
});

} else if (code === 127) { // Backspace
} else if (e.key === "\u007F") { // Backspace
if (this.cursorPosition > 0) {
this.terminal.write("\b \b");
const trimmedTextBeforeCursor = this.terminalInputBuffer.slice(0, this.cursorPosition - 1);
const textAfterCursor = this.terminalInputBuffer.slice(this.cursorPosition);
const clearAfterCursor = " ".repeat(textAfterCursor.length) + "\b \b".repeat(textAfterCursor.length + 1);
this.terminalInputBuffer = trimmedTextBeforeCursor + textAfterCursor;
this.terminal.write(clearAfterCursor + textAfterCursor + "\b".repeat(textAfterCursor.length));
this.cursorPosition--;
this.terminalInputBuffer = this.terminalInputBuffer.slice(0, -1);
}
} else if (e.key === "\u001B\u005B\u0041" || e.key === "\u001B\u005B\u0042") { // UP OR DOWN
// Do nothing

} else if (e.key === "\u001B\u005B\u0043") { // RIGHT
// TODO
if (this.cursorPosition < this.terminalInputBuffer.length) {
this.terminal.write(this.terminalInputBuffer[this.cursorPosition]);
this.cursorPosition++;
}
} else if (e.key === "\u001B\u005B\u0044") { // LEFT
// TODO
if (this.cursorPosition > 0) {
this.terminal.write("\b");
this.cursorPosition--;
}
} else if (e.key === "\u0003") { // Ctrl + C
console.debug("Ctrl + C");
this.$root.emitAgent(this.endpoint, "terminalInput", this.name, e.key);
this.removeInput();
} else if (e.key === "\u0009" || e.key.startsWith("\u001B")) { // TAB or other special keys
// Do nothing
} else {
const textBeforeCursor = this.terminalInputBuffer.slice(0, this.cursorPosition);
const textAfterCursor = this.terminalInputBuffer.slice(this.cursorPosition);
this.terminalInputBuffer = textBeforeCursor + e.key + textAfterCursor;
this.terminal.write(e.key + textAfterCursor + "\b".repeat(textAfterCursor.length));
this.cursorPosition++;
this.terminalInputBuffer += e.key;
console.log(this.terminalInputBuffer);
this.terminal.write(e.key);
}
});
},
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