Clipboard!

codetab.ts

@@ -3,8 +3,8 @@ import { fontWidth, fontHeight } from "./font.ts";
 import { drawText } from "./builtins.ts";
 import { COLOR } from "./colors.ts";
 import {getSheet, setSheet} from "./sheet.ts";
-import { K, getKeyboardString, keyPressed, shiftKeyDown } from "./keyboard.ts";
-import { tokenize } from "./deps.ts";
+import { K, ctrlKeyDown, getKeyboardString, keyPressed, shiftKeyDown } from "./keyboard.ts";
+import { clipboard, tokenize } from "./deps.ts";
 
 const state = {
 	scrollX: 0,
@@ -91,6 +91,19 @@ const state = {
 			this.insertText("");
 		}
 	},
+	async copy() {
+		const {code, anchor, focus} = this;
+		const selected = code.slice(Math.min(anchor,focus), Math.max(anchor,focus));
+		await clipboard.writeText(selected);
+	},
+	async cut() {
+		await this.copy();
+		this.insertText("");
+	},
+	async paste() {
+
+		this.insertText(await clipboard.readText());
+	},
 	scrollToCursor() {
 		const {focusY, focusX, scrollY, scrollX} = this;
 		const fh = fontHeight + 1;
@@ -332,14 +345,14 @@ const drawCodeField = (code: string, x: number, y: number, w: number, h: number)
 	})
 }
 
-const update = () => {
+const update = async () => {
 	const { focus, focusX, focusY} = state;
 	const keyboardString = getKeyboardString();
 	if (keyboardString) {
 		state.insertText(keyboardString);
 		state.scrollToCursor();
 	}
-	// TODO: Handle ctrl-C, ctrl-V, ctrl-X, ctrl-Z
+	// TODO: Handle ctrl-Z
 	// TODO: Make ctrl-/ do commenting out (take inspiration from tab)
 
 	if (keyPressed(K.ENTER)) {
@@ -399,6 +412,15 @@ const update = () => {
 		}
 		state.scrollToCursor();
 	}
+	if (keyPressed("C") && ctrlKeyDown()) {
+		await state.copy();
+	}
+	if (keyPressed("X") && ctrlKeyDown()) {
+		await state.cut();
+	}
+	if (keyPressed("V") && ctrlKeyDown()) {
+		await state.paste();
+	}
 }
 
 const draw = () => {