init

src/render-plugin/user-event.ts

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+import { Transaction } from "@codemirror/state";
+
+enum UserEvent {
+	INPUT = "input",
+	INPUT_TYPE = "input.type",
+	INPUT_TYPE_COMPOSE = "input.type.compose",
+	INPUT_PASTE = "input.paste",
+	INPUT_DROP = "input.drop",
+	INPUT_COMPLETE = "input.complete",
+	DELETE = "delete",
+	DELETE_SELECTION = "delete.selection",
+	DELETE_FORWARD = "delete.forward",
+	DELETE_BACKWARDS = "delete.backward",
+	DELETE_CUT = "delete.cut",
+	MOVE = "move",
+	MOVE_DROP = "move.drop",
+	CURSOR_MOVED = "select",
+	CURSOR_MOVED_BY_MOUSE = "select.pointer",
+	UNDO = "undo",
+	REDO = "redo",
+}
+
+// eslint-disable-next-line @typescript-eslint/no-namespace
+namespace UserEvent {
+	export function isDelete(event: UserEvent) {
+		return event.contains("delete");
+	}
+
+	export function values_string(): Array<string> {
+		return Object.values(UserEvent).map((event) => event.toString());
+	}
+
+	export function fromString(event: string) {
+		const keys = Object.keys(UserEvent) as Array<keyof typeof UserEvent>;
+		for (const key of keys) {
+			if (event === UserEvent[key]) {
+				return UserEvent[key] as UserEvent;
+			}
+		}
+		return null;
+	}
+
+	export function fromTransaction(transaction: Transaction) {
+		for (const inputType of UserEvent.values_string()) {
+			if (transaction.isUserEvent(inputType)) {
+				const event = UserEvent.fromString(inputType);
+				if (event) {
+					return event;
+				}
+			}
+		}
+		return null;
+	}
+}
+
+export default UserEvent;