609 lines
20 KiB
TypeScript
609 lines
20 KiB
TypeScript
import assert from "node:assert";
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import { describe, it } from "node:test";
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import type { Component, Focusable } from "../src/tui.js";
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import { TUI } from "../src/tui.js";
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import { VirtualTerminal } from "./virtual-terminal.js";
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class StaticOverlay implements Component {
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constructor(private lines: string[]) {}
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render(): string[] {
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return this.lines;
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}
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invalidate(): void {}
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}
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class EmptyContent implements Component {
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render(): string[] {
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return [];
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}
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invalidate(): void {}
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}
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class FocusableOverlay implements Component, Focusable {
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focused = false;
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inputs: string[] = [];
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constructor(private lines: string[]) {}
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handleInput(data: string): void {
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this.inputs.push(data);
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}
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render(): string[] {
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return this.lines;
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}
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invalidate(): void {}
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}
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async function renderAndFlush(tui: TUI, terminal: VirtualTerminal): Promise<void> {
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tui.requestRender(true);
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await new Promise<void>((resolve) => process.nextTick(resolve));
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await terminal.flush();
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}
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describe("TUI overlay non-capturing", () => {
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describe("focus management", () => {
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it("non-capturing overlay preserves focus on creation", async () => {
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const terminal = new VirtualTerminal(80, 24);
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const tui = new TUI(terminal);
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const editor = new FocusableOverlay(["EDITOR"]);
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const overlay = new FocusableOverlay(["OVERLAY"]);
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tui.addChild(new EmptyContent());
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tui.setFocus(editor);
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tui.start();
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try {
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tui.showOverlay(overlay, { nonCapturing: true });
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await renderAndFlush(tui, terminal);
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assert.strictEqual(editor.focused, true);
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assert.strictEqual(overlay.focused, false);
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} finally {
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tui.stop();
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}
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});
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it("focus() transfers focus to the overlay", async () => {
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const terminal = new VirtualTerminal(80, 24);
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const tui = new TUI(terminal);
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const editor = new FocusableOverlay(["EDITOR"]);
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const overlay = new FocusableOverlay(["OVERLAY"]);
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tui.addChild(new EmptyContent());
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tui.setFocus(editor);
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tui.start();
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try {
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const handle = tui.showOverlay(overlay, { nonCapturing: true });
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handle.focus();
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await renderAndFlush(tui, terminal);
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assert.strictEqual(editor.focused, false);
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assert.strictEqual(overlay.focused, true);
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assert.strictEqual(handle.isFocused(), true);
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} finally {
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tui.stop();
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}
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});
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it("unfocus() restores previous focus", async () => {
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const terminal = new VirtualTerminal(80, 24);
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const tui = new TUI(terminal);
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const editor = new FocusableOverlay(["EDITOR"]);
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const overlay = new FocusableOverlay(["OVERLAY"]);
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tui.addChild(new EmptyContent());
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tui.setFocus(editor);
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tui.start();
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try {
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const handle = tui.showOverlay(overlay, { nonCapturing: true });
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handle.focus();
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handle.unfocus();
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await renderAndFlush(tui, terminal);
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assert.strictEqual(editor.focused, true);
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assert.strictEqual(overlay.focused, false);
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assert.strictEqual(handle.isFocused(), false);
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} finally {
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tui.stop();
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}
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});
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it("setHidden(false) on non-capturing overlay does not auto-focus", async () => {
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const terminal = new VirtualTerminal(80, 24);
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const tui = new TUI(terminal);
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const editor = new FocusableOverlay(["EDITOR"]);
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const overlay = new FocusableOverlay(["OVERLAY"]);
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tui.addChild(new EmptyContent());
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tui.setFocus(editor);
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tui.start();
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try {
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const handle = tui.showOverlay(overlay, { nonCapturing: true });
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handle.setHidden(true);
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handle.setHidden(false);
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await renderAndFlush(tui, terminal);
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assert.strictEqual(editor.focused, true);
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assert.strictEqual(overlay.focused, false);
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} finally {
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tui.stop();
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}
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});
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it("hide() when overlay is not focused does not change focus", async () => {
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const terminal = new VirtualTerminal(80, 24);
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const tui = new TUI(terminal);
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const editor = new FocusableOverlay(["EDITOR"]);
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const overlay = new FocusableOverlay(["OVERLAY"]);
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tui.addChild(new EmptyContent());
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tui.setFocus(editor);
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tui.start();
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try {
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const handle = tui.showOverlay(overlay, { nonCapturing: true });
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handle.hide();
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await renderAndFlush(tui, terminal);
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assert.strictEqual(editor.focused, true);
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} finally {
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tui.stop();
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}
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});
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it("hide() when focused restores focus correctly", async () => {
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const terminal = new VirtualTerminal(80, 24);
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const tui = new TUI(terminal);
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const editor = new FocusableOverlay(["EDITOR"]);
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const overlay = new FocusableOverlay(["OVERLAY"]);
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tui.addChild(new EmptyContent());
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tui.setFocus(editor);
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tui.start();
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try {
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const handle = tui.showOverlay(overlay, { nonCapturing: true });
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handle.focus();
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handle.hide();
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await renderAndFlush(tui, terminal);
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assert.strictEqual(editor.focused, true);
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assert.strictEqual(overlay.focused, false);
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} finally {
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tui.stop();
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}
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});
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it("capturing overlay removed with non-capturing below restores focus to editor", async () => {
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const terminal = new VirtualTerminal(80, 24);
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const tui = new TUI(terminal);
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const editor = new FocusableOverlay(["EDITOR"]);
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const nonCapturing = new FocusableOverlay(["NC"]);
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const capturing = new FocusableOverlay(["CAP"]);
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tui.addChild(new EmptyContent());
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tui.setFocus(editor);
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tui.start();
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try {
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tui.showOverlay(nonCapturing, { nonCapturing: true });
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const handle = tui.showOverlay(capturing);
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assert.strictEqual(capturing.focused, true);
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handle.hide();
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await renderAndFlush(tui, terminal);
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assert.strictEqual(editor.focused, true);
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assert.strictEqual(nonCapturing.focused, false);
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} finally {
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tui.stop();
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}
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});
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it("sub-overlay cleanup then hideOverlay restores focus and input to editor", async () => {
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const terminal = new VirtualTerminal(80, 24);
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const tui = new TUI(terminal);
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const editor = new FocusableOverlay(["EDITOR"]);
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const timer = new FocusableOverlay(["TIMER"]);
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const controller = new FocusableOverlay(["CTRL"]);
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tui.addChild(new EmptyContent());
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tui.setFocus(editor);
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tui.start();
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try {
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const timerHandle = tui.showOverlay(timer, { nonCapturing: true });
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tui.showOverlay(controller);
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assert.strictEqual(controller.focused, true);
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assert.strictEqual(editor.focused, false);
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timerHandle.hide();
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tui.hideOverlay();
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await renderAndFlush(tui, terminal);
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assert.strictEqual(editor.focused, true);
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assert.strictEqual(controller.focused, false);
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assert.strictEqual(timer.focused, false);
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terminal.sendInput("x");
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await renderAndFlush(tui, terminal);
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assert.deepStrictEqual(editor.inputs, ["x"]);
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assert.deepStrictEqual(controller.inputs, []);
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assert.deepStrictEqual(timer.inputs, []);
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} finally {
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tui.stop();
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}
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});
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it("microtask-deferred sub-overlay pattern (showExtensionCustom simulation) restores focus", async () => {
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const terminal = new VirtualTerminal(80, 24);
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const tui = new TUI(terminal);
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const editor = new FocusableOverlay(["EDITOR"]);
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const timer = new FocusableOverlay(["TIMER"]);
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const controller = new FocusableOverlay(["CTRL"]);
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tui.addChild(new EmptyContent());
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tui.setFocus(editor);
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tui.start();
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try {
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// Simulate showExtensionCustom: factory creates timer synchronously,
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// then .then() pushes controller as a microtask
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let timerHandle: ReturnType<typeof tui.showOverlay>;
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let doneFn: () => void;
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const overlayPromise = new Promise<void>((resolve) => {
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doneFn = () => {
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timerHandle.hide();
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tui.hideOverlay();
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resolve();
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};
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// Factory runs synchronously: creates timer sub-overlay
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timerHandle = tui.showOverlay(timer, { nonCapturing: true });
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// .then() runs as microtask — same as showExtensionCustom
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Promise.resolve(controller).then((c) => {
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tui.showOverlay(c);
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});
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});
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// Wait for .then() microtask and renders to settle
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await new Promise<void>((r) => setTimeout(r, 50));
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await renderAndFlush(tui, terminal);
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assert.strictEqual(controller.focused, true);
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assert.strictEqual(editor.focused, false);
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// Simulate Esc: cleanup + close (from inside handleInput)
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doneFn!();
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// Now await the promise (simulating showExtensionCustom resolving)
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await overlayPromise;
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await renderAndFlush(tui, terminal);
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assert.strictEqual(editor.focused, true, "editor should regain focus");
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assert.strictEqual(controller.focused, false);
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assert.strictEqual(timer.focused, false);
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terminal.sendInput("x");
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await renderAndFlush(tui, terminal);
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assert.deepStrictEqual(editor.inputs, ["x"], "editor should receive input after close");
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assert.deepStrictEqual(controller.inputs, []);
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} finally {
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tui.stop();
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}
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});
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it("handleInput redirection skips non-capturing overlays when focused overlay becomes invisible", async () => {
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const terminal = new VirtualTerminal(80, 24);
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const tui = new TUI(terminal);
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const editor = new FocusableOverlay(["EDITOR"]);
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const fallbackCapturing = new FocusableOverlay(["FALLBACK"]);
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const nonCapturing = new FocusableOverlay(["NC"]);
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const primary = new FocusableOverlay(["PRIMARY"]);
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let isVisible = true;
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tui.addChild(new EmptyContent());
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tui.setFocus(editor);
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tui.start();
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try {
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tui.showOverlay(fallbackCapturing);
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tui.showOverlay(nonCapturing, { nonCapturing: true });
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tui.showOverlay(primary, { visible: () => isVisible });
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assert.strictEqual(primary.focused, true);
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isVisible = false;
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terminal.sendInput("x");
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await renderAndFlush(tui, terminal);
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assert.deepStrictEqual(primary.inputs, []);
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assert.deepStrictEqual(nonCapturing.inputs, []);
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assert.deepStrictEqual(fallbackCapturing.inputs, ["x"]);
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assert.strictEqual(fallbackCapturing.focused, true);
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} finally {
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tui.stop();
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}
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});
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it("hideOverlay() does not reassign focus when topmost overlay is non-capturing", async () => {
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const terminal = new VirtualTerminal(80, 24);
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const tui = new TUI(terminal);
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const editor = new FocusableOverlay(["EDITOR"]);
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const capturing = new FocusableOverlay(["CAP"]);
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const nonCapturing = new FocusableOverlay(["NC"]);
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tui.addChild(new EmptyContent());
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tui.setFocus(editor);
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tui.start();
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try {
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tui.showOverlay(capturing);
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tui.showOverlay(nonCapturing, { nonCapturing: true });
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assert.strictEqual(capturing.focused, true);
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tui.hideOverlay();
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await renderAndFlush(tui, terminal);
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assert.strictEqual(capturing.focused, true);
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} finally {
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tui.stop();
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}
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});
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it("multiple capturing and non-capturing overlays restore focus through removals", async () => {
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const terminal = new VirtualTerminal(80, 24);
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const tui = new TUI(terminal);
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const editor = new FocusableOverlay(["EDITOR"]);
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const c1 = new FocusableOverlay(["C1"]);
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const n1 = new FocusableOverlay(["N1"]);
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const c2 = new FocusableOverlay(["C2"]);
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const n2 = new FocusableOverlay(["N2"]);
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tui.addChild(new EmptyContent());
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tui.setFocus(editor);
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tui.start();
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try {
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const c1Handle = tui.showOverlay(c1);
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tui.showOverlay(n1, { nonCapturing: true });
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const c2Handle = tui.showOverlay(c2);
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tui.showOverlay(n2, { nonCapturing: true });
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assert.strictEqual(c2.focused, true);
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c2Handle.hide();
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await renderAndFlush(tui, terminal);
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assert.strictEqual(c1.focused, true);
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c1Handle.hide();
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await renderAndFlush(tui, terminal);
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assert.strictEqual(editor.focused, true);
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} finally {
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tui.stop();
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}
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});
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it("capturing overlay unfocus() on topmost capturing overlay falls back to preFocus", async () => {
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const terminal = new VirtualTerminal(80, 24);
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const tui = new TUI(terminal);
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const editor = new FocusableOverlay(["EDITOR"]);
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const capturing = new FocusableOverlay(["CAP"]);
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tui.addChild(new EmptyContent());
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tui.setFocus(editor);
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tui.start();
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try {
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const handle = tui.showOverlay(capturing);
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assert.strictEqual(capturing.focused, true);
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handle.unfocus();
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await renderAndFlush(tui, terminal);
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assert.strictEqual(editor.focused, true);
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assert.strictEqual(capturing.focused, false);
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} finally {
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tui.stop();
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}
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});
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});
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describe("no-op guards", () => {
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it("focus() on hidden overlay is a no-op", async () => {
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const terminal = new VirtualTerminal(80, 24);
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const tui = new TUI(terminal);
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const editor = new FocusableOverlay(["EDITOR"]);
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const overlay = new FocusableOverlay(["OVERLAY"]);
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tui.addChild(new EmptyContent());
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tui.setFocus(editor);
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tui.start();
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try {
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const handle = tui.showOverlay(overlay, { nonCapturing: true });
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handle.setHidden(true);
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handle.focus();
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await renderAndFlush(tui, terminal);
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assert.strictEqual(editor.focused, true);
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assert.strictEqual(handle.isFocused(), false);
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} finally {
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tui.stop();
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}
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});
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it("focus() after hide() is a no-op", async () => {
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const terminal = new VirtualTerminal(80, 24);
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const tui = new TUI(terminal);
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const editor = new FocusableOverlay(["EDITOR"]);
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const overlay = new FocusableOverlay(["OVERLAY"]);
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tui.addChild(new EmptyContent());
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tui.setFocus(editor);
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tui.start();
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try {
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const handle = tui.showOverlay(overlay, { nonCapturing: true });
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handle.hide();
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handle.focus();
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await renderAndFlush(tui, terminal);
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assert.strictEqual(editor.focused, true);
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assert.strictEqual(handle.isFocused(), false);
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} finally {
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tui.stop();
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}
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});
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it("unfocus() when overlay does not have focus is a no-op", async () => {
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const terminal = new VirtualTerminal(80, 24);
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const tui = new TUI(terminal);
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const editor = new FocusableOverlay(["EDITOR"]);
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const overlay = new FocusableOverlay(["OVERLAY"]);
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tui.addChild(new EmptyContent());
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tui.setFocus(editor);
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tui.start();
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try {
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const handle = tui.showOverlay(overlay, { nonCapturing: true });
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handle.unfocus();
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await renderAndFlush(tui, terminal);
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assert.strictEqual(editor.focused, true);
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assert.strictEqual(overlay.focused, false);
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} finally {
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tui.stop();
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}
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});
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it("unfocus() with null preFocus clears focus and does not route input back to overlay", async () => {
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const terminal = new VirtualTerminal(80, 24);
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const tui = new TUI(terminal);
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const overlay = new FocusableOverlay(["OVERLAY"]);
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tui.addChild(new EmptyContent());
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tui.start();
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try {
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const handle = tui.showOverlay(overlay);
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assert.strictEqual(overlay.focused, true);
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handle.unfocus();
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assert.strictEqual(overlay.focused, false);
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terminal.sendInput("x");
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await renderAndFlush(tui, terminal);
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assert.deepStrictEqual(overlay.inputs, []);
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assert.strictEqual(handle.isFocused(), false);
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} finally {
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tui.stop();
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}
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});
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});
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describe("focus cycle prevention", () => {
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it("toggle focus between non-capturing overlays then unfocus returns to editor", async () => {
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const terminal = new VirtualTerminal(80, 24);
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const tui = new TUI(terminal);
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const editor = new FocusableOverlay(["EDITOR"]);
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const a = new FocusableOverlay(["A"]);
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const b = new FocusableOverlay(["B"]);
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tui.addChild(new EmptyContent());
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tui.setFocus(editor);
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tui.start();
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try {
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const aHandle = tui.showOverlay(a, { nonCapturing: true });
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const bHandle = tui.showOverlay(b, { nonCapturing: true });
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aHandle.focus();
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bHandle.focus();
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aHandle.focus();
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aHandle.unfocus();
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await renderAndFlush(tui, terminal);
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assert.strictEqual(editor.focused, true);
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assert.strictEqual(a.focused, false);
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assert.strictEqual(b.focused, false);
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} finally {
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tui.stop();
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}
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});
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});
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describe("rendering order", () => {
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it("focus() on already-focused overlay bumps visual order", async () => {
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const terminal = new VirtualTerminal(20, 6);
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const tui = new TUI(terminal);
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const editor = new FocusableOverlay(["EDITOR"]);
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tui.addChild(new EmptyContent());
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tui.setFocus(editor);
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tui.start();
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try {
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const aHandle = tui.showOverlay(new StaticOverlay(["A"]), { row: 0, col: 0, width: 1, nonCapturing: true });
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tui.showOverlay(new StaticOverlay(["B"]), { row: 0, col: 0, width: 1, nonCapturing: true });
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aHandle.focus();
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tui.showOverlay(new StaticOverlay(["C"]), { row: 0, col: 0, width: 1, nonCapturing: true });
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await renderAndFlush(tui, terminal);
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assert.strictEqual(terminal.getViewport()[0]?.charAt(0), "C");
|
|
aHandle.focus();
|
|
await renderAndFlush(tui, terminal);
|
|
assert.strictEqual(terminal.getViewport()[0]?.charAt(0), "A");
|
|
assert.strictEqual(aHandle.isFocused(), true);
|
|
} finally {
|
|
tui.stop();
|
|
}
|
|
});
|
|
|
|
it("default rendering order for overlapping overlays follows creation order", async () => {
|
|
const terminal = new VirtualTerminal(20, 6);
|
|
const tui = new TUI(terminal);
|
|
tui.addChild(new EmptyContent());
|
|
tui.start();
|
|
try {
|
|
tui.showOverlay(new StaticOverlay(["A"]), { row: 0, col: 0, width: 1, nonCapturing: true });
|
|
tui.showOverlay(new StaticOverlay(["B"]), { row: 0, col: 0, width: 1, nonCapturing: true });
|
|
await renderAndFlush(tui, terminal);
|
|
assert.strictEqual(terminal.getViewport()[0]?.charAt(0), "B");
|
|
} finally {
|
|
tui.stop();
|
|
}
|
|
});
|
|
|
|
it("focus() on lower overlay renders it on top", async () => {
|
|
const terminal = new VirtualTerminal(20, 6);
|
|
const tui = new TUI(terminal);
|
|
tui.addChild(new EmptyContent());
|
|
tui.start();
|
|
try {
|
|
const lower = tui.showOverlay(new StaticOverlay(["A"]), { row: 0, col: 0, width: 1, nonCapturing: true });
|
|
tui.showOverlay(new StaticOverlay(["B"]), { row: 0, col: 0, width: 1, nonCapturing: true });
|
|
await renderAndFlush(tui, terminal);
|
|
assert.strictEqual(terminal.getViewport()[0]?.charAt(0), "B");
|
|
lower.focus();
|
|
await renderAndFlush(tui, terminal);
|
|
assert.strictEqual(terminal.getViewport()[0]?.charAt(0), "A");
|
|
} finally {
|
|
tui.stop();
|
|
}
|
|
});
|
|
|
|
it("focusing middle overlay places it on top while preserving others relative order", async () => {
|
|
const terminal = new VirtualTerminal(20, 6);
|
|
const tui = new TUI(terminal);
|
|
tui.addChild(new EmptyContent());
|
|
tui.start();
|
|
try {
|
|
tui.showOverlay(new StaticOverlay(["A"]), { row: 0, col: 0, width: 1, nonCapturing: true });
|
|
const middle = tui.showOverlay(new StaticOverlay(["B"]), { row: 0, col: 0, width: 1, nonCapturing: true });
|
|
const top = tui.showOverlay(new StaticOverlay(["C"]), { row: 0, col: 0, width: 1, nonCapturing: true });
|
|
await renderAndFlush(tui, terminal);
|
|
assert.strictEqual(terminal.getViewport()[0]?.charAt(0), "C");
|
|
middle.focus();
|
|
await renderAndFlush(tui, terminal);
|
|
assert.strictEqual(terminal.getViewport()[0]?.charAt(0), "B");
|
|
middle.hide();
|
|
await renderAndFlush(tui, terminal);
|
|
assert.strictEqual(terminal.getViewport()[0]?.charAt(0), "C");
|
|
top.hide();
|
|
await renderAndFlush(tui, terminal);
|
|
assert.strictEqual(terminal.getViewport()[0]?.charAt(0), "A");
|
|
} finally {
|
|
tui.stop();
|
|
}
|
|
});
|
|
|
|
it("capturing overlay hidden and shown again renders on top after unhide", async () => {
|
|
const terminal = new VirtualTerminal(20, 6);
|
|
const tui = new TUI(terminal);
|
|
tui.addChild(new EmptyContent());
|
|
tui.start();
|
|
try {
|
|
tui.showOverlay(new StaticOverlay(["A"]), { row: 0, col: 0, width: 1, nonCapturing: true });
|
|
const capturing = tui.showOverlay(new StaticOverlay(["B"]), { row: 0, col: 0, width: 1 });
|
|
await renderAndFlush(tui, terminal);
|
|
assert.strictEqual(terminal.getViewport()[0]?.charAt(0), "B");
|
|
capturing.setHidden(true);
|
|
tui.showOverlay(new StaticOverlay(["C"]), { row: 0, col: 0, width: 1, nonCapturing: true });
|
|
await renderAndFlush(tui, terminal);
|
|
assert.strictEqual(terminal.getViewport()[0]?.charAt(0), "C");
|
|
capturing.setHidden(false);
|
|
await renderAndFlush(tui, terminal);
|
|
assert.strictEqual(terminal.getViewport()[0]?.charAt(0), "B");
|
|
} finally {
|
|
tui.stop();
|
|
}
|
|
});
|
|
|
|
it("unfocus() does not change visual order until another overlay is focused", async () => {
|
|
const terminal = new VirtualTerminal(20, 6);
|
|
const tui = new TUI(terminal);
|
|
const editor = new FocusableOverlay(["EDITOR"]);
|
|
tui.addChild(new EmptyContent());
|
|
tui.setFocus(editor);
|
|
tui.start();
|
|
try {
|
|
const a = tui.showOverlay(new StaticOverlay(["A"]), { row: 0, col: 0, width: 1, nonCapturing: true });
|
|
const b = tui.showOverlay(new StaticOverlay(["B"]), { row: 0, col: 0, width: 1, nonCapturing: true });
|
|
await renderAndFlush(tui, terminal);
|
|
assert.strictEqual(terminal.getViewport()[0]?.charAt(0), "B");
|
|
a.focus();
|
|
await renderAndFlush(tui, terminal);
|
|
assert.strictEqual(terminal.getViewport()[0]?.charAt(0), "A");
|
|
a.unfocus();
|
|
await renderAndFlush(tui, terminal);
|
|
assert.strictEqual(terminal.getViewport()[0]?.charAt(0), "A");
|
|
b.focus();
|
|
await renderAndFlush(tui, terminal);
|
|
assert.strictEqual(terminal.getViewport()[0]?.charAt(0), "B");
|
|
} finally {
|
|
tui.stop();
|
|
}
|
|
});
|
|
});
|
|
});
|