From 09c6d6fbb1d7c7a68701f82d0f997304d46bdf94 Mon Sep 17 00:00:00 2001
From: Will Scullin <scullin@scullinsteel.com>
Date: Tue, 20 Apr 2021 17:42:32 -0700
Subject: [PATCH] Options modal (#75)

Refactor Options modal, webgl scanline, restore `Apple2.apple2`, other minor fixes.
---
 apple2js.html                                 |  91 ------
 apple2jse.html                                |  87 ------
 css/apple2.css                                |   5 +-
 jest.config.js                                |   5 +-
 js/canvas.ts                                  |  17 +
 js/entry2.js                                  |   5 +-
 js/entry2e.js                                 |   5 +-
 js/gl.ts                                      |  11 +-
 js/main2.js                                   |   2 -
 js/main2e.js                                  |   2 -
 js/prefs.ts                                   |   2 +
 js/ui/apple2.ts                               | 294 ++++--------------
 js/ui/audio.ts                                |  47 ++-
 js/ui/joystick.ts                             | 104 +++++++
 js/ui/keyboard.ts                             |  69 ++++
 js/ui/options_modal.ts                        | 178 +++++++++++
 js/ui/screen.ts                               |  85 +++++
 js/ui/system.ts                               |  98 ++++++
 js/util.ts                                    |  11 +-
 js/videomodes.ts                              |   1 +
 package-lock.json                             | 294 +++++++++++++++++-
 package.json                                  |   4 +-
 .../__snapshots__/options_modal.spec.ts.snap  |  64 ++++
 test/js/ui/options_modal.spec.ts              | 138 ++++++++
 tsconfig.json                                 |   8 +-
 webpack.config.js                             |   2 +-
 26 files changed, 1168 insertions(+), 461 deletions(-)
 create mode 100644 js/ui/joystick.ts
 create mode 100644 js/ui/options_modal.ts
 create mode 100644 js/ui/screen.ts
 create mode 100644 js/ui/system.ts
 create mode 100644 test/js/ui/__snapshots__/options_modal.spec.ts.snap
 create mode 100644 test/js/ui/options_modal.spec.ts

diff --git a/apple2js.html b/apple2js.html
index 3f0b9b2..7eb7950 100644
--- a/apple2js.html
+++ b/apple2js.html
@@ -135,97 +135,6 @@
           </button>
         </header>
         <main class="modal__content" id="options-modal-content">
-          <h3>Type</h3>
-          <ul>
-            <li>
-              <select id="computer_type2" value="apple2plus" onchange="Apple2.updateCPU()">
-                <option value="apple2plus">Apple ][+</option>
-                <option value="apple2">Autostart Apple ][</option>
-                <option value="apple213">13 Sector Apple ][</option>
-                <option value="original">Apple ][</option>
-                <option value="apple2j">Apple ][j+</option>
-                <option value="apple2lc">Apple ][+ (lowercase font)</option>
-                <option value="apple2pig">Apple ][+ (pig font)</option>
-              </select>
-            </li>
-            <li>
-              <i>* Reload page to take effect</i>
-            </li>
-          </ul>
-          <h3>CPU</h3>
-          <ul>
-            <li>
-              <input type="checkbox" id="accelerator_toggle" onclick="Apple2.updateCPU()"/>
-              <label for="accelerator_toggle">
-                Accelerated CPU
-              </label>
-            </li>
-          </ul>
-          <h3>Joystick</h3>
-          <ul>
-            <li>
-              <input type="checkbox" id="disable_mouse"
-                    onclick="Apple2.updateJoystick()" />
-              <label for="disable_mouse">
-                Disable Mouse Joystick
-              </label>
-            </li>
-            <li>
-              <input type="checkbox" id="flip_x"
-                    onclick="Apple2.updateJoystick()" />
-              <label for="flip_x">
-                Flip X-Axis
-              </label>
-            </li>
-            <li>
-              <input type="checkbox" id="flip_y"
-                    onclick="Apple2.updateJoystick()" />
-              <label for="flip_y">
-                Flip Y-Axis
-              </label>
-            </li>
-            <li>
-              <input type="checkbox" id="swap_x_y"
-                    onclick="Apple2.updateJoystick()" />
-              <label for="swap_x_y">
-                Swap X-Y Axis
-              </label>
-            </li>
-          </ul>
-          <h3>Monitor</h3>
-          <ul>
-            <li>
-              <input type="checkbox" id="mono_screen"
-                    onclick="Apple2.updateScreen()" />
-              <label for="mono_screen">
-                Mono Screen
-              </label>
-            </li>
-            <li>
-              <input type="checkbox" id="show_scanlines"
-                    onclick="Apple2.updateScreen()" />
-              <label for="show_scanlines">
-                Show Scanlines
-              </label>
-            </li>
-            <li>
-              <input type="checkbox" id="gl_canvas"
-                    onclick="Apple2.updateScreen()" />
-              <label for="gl_canvas">
-                GL Renderer (Restart required)
-              </label>
-            </li>
-          </ul>
-          <h3>Sound</h3>
-          <ul>
-            <li>
-              <input type="checkbox" id="enable_sound"
-                    onclick="Apple2.updateSound()" checked="checked" />
-              <label for="enable_sound">
-                Enable
-              </label>
-            </li>
-          </ul>
         </main>
         <footer class="modal__footer">
           <button class="modal__btn" data-micromodal-close aria-label="Close this dialog window">Close</button>
diff --git a/apple2jse.html b/apple2jse.html
index e398d7c..fe2f208 100644
--- a/apple2jse.html
+++ b/apple2jse.html
@@ -144,93 +144,6 @@
           </button>
         </header>
         <main class="modal__content" id="options-modal-content">
-          <h3>Type</h3>
-          <ul>
-            <li>
-                <select id="computer_type2e" value="apple2enh" onchange="Apple2.updateCPU()">
-                  <option value="apple2enh">Enhanced Apple //e</option>
-                  <option value="apple2e">Apple //e</option>
-                  <option value="apple2rm">Enhanced Apple //e (Reactive Micro)</option>
-                </select>
-            </li>
-            <li>
-              <i>* Reload page to take effect</i>
-            </li>
-          </ul>
-          <h3>CPU</h3>
-          <ul>
-            <li>
-              <input type="checkbox" id="accelerator_toggle" onclick="Apple2.updateCPU()"/>
-              <label for="accelerator_toggle">
-                Accelerated CPU
-              </label>
-            </li>
-          </ul>
-          <h3>Joystick</h3>
-          <ul>
-            <li>
-              <input type="checkbox" id="disable_mouse"
-                    onclick="Apple2.updateJoystick()" />
-              <label for="disable_mouse">
-                Disable Mouse Joystick
-              </label>
-            </li>
-            <li>
-              <input type="checkbox" id="flip_x"
-                    onclick="Apple2.updateJoystick()" />
-              <label for="flip_x">
-                Flip X-Axis
-              </label>
-            </li>
-            <li>
-              <input type="checkbox" id="flip_y"
-                    onclick="Apple2.updateJoystick()" />
-              <label for="flip_y">
-                Flip Y-Axis
-              </label>
-            </li>
-            <li>
-              <input type="checkbox" id="swap_x_y"
-                    onclick="Apple2.updateJoystick()" />
-              <label for="swap_x_y">
-                Swap X-Y Axis
-              </label>
-            </li>
-          </ul>
-          <h3>Monitor</h3>
-          <ul>
-            <li>
-              <input type="checkbox" id="mono_screen"
-                    onclick="Apple2.updateScreen()" />
-              <label for="mono_screen">
-                Mono Screen
-              </label>
-            </li>
-            <li>
-              <input type="checkbox" id="show_scanlines"
-                    onclick="Apple2.updateScreen()" />
-              <label for="show_scanlines">
-                Show Scanlines
-              </label>
-            </li>
-            <li>
-              <input type="checkbox" id="gl_canvas"
-                    onclick="Apple2.updateScreen()" />
-              <label for="gl_canvas">
-                GL Renderer (Restart required)
-              </label>
-            </li>
-          </ul>
-          <h3>Sound</h3>
-          <ul>
-            <li>
-              <input type="checkbox" id="enable_sound"
-                    onclick="Apple2.updateSound()" checked="checked" />
-              <label for="enable_sound">
-                Enable
-              </label>
-            </li>
-          </ul>
         </main>
         <footer class="modal__footer">
           <button class="modal__btn" data-micromodal-close aria-label="Close this dialog window">Close</button>
diff --git a/css/apple2.css b/css/apple2.css
index 99c0721..2936444 100644
--- a/css/apple2.css
+++ b/css/apple2.css
@@ -213,6 +213,7 @@ canvas {
 }
 
 #screen:-webkit-full-screen {
+    background-color: black;
     top: 0;
     left: 0;
     width: 100%;
@@ -632,10 +633,6 @@ button:focus {
     display: none;
 }
 
-#textarea textarea {
-    font-family: courier;
-}
-
 #http_url {
     width: 500px;
 }
diff --git a/jest.config.js b/jest.config.js
index 0d8d37c..088a4a8 100644
--- a/jest.config.js
+++ b/jest.config.js
@@ -1,4 +1,7 @@
 module.exports = {
+    'moduleNameMapper': {
+        '^js/(.*)': '<rootDir>/js/$1',
+    },
     'roots': [
         'js/',
         'test/',
@@ -10,4 +13,4 @@ module.exports = {
         '^.+\\.js$': 'babel-jest',
         '^.+\\.ts$': 'ts-jest'
     },
-};
\ No newline at end of file
+};
diff --git a/js/canvas.ts b/js/canvas.ts
index 67acf16..c373577 100644
--- a/js/canvas.ts
+++ b/js/canvas.ts
@@ -1146,6 +1146,11 @@ export class VideoModes2D implements VideoModes {
     }
 
     mono(on: boolean) {
+        if (on) {
+            this.canvas.classList.add('mono');
+        } else {
+            this.canvas.classList.remove('mono');
+        }
         this._grs[0].mono(on);
         this._grs[1].mono(on);
         this._hgrs[0].mono(on);
@@ -1153,6 +1158,18 @@ export class VideoModes2D implements VideoModes {
         this._refresh();
     }
 
+    scanlines(on: boolean) {
+        // Can't apply scanline filter to canvas
+        const parent = this.canvas.parentElement;
+        if (parent) {
+            if (on) {
+                parent.classList.add('scanlines');
+            } else {
+                parent.classList.remove('scanlines');
+            }
+        }
+    }
+
     getText() {
         return this._grs[pageMode - 1].getText();
     }
diff --git a/js/entry2.js b/js/entry2.js
index e3352e0..7c79184 100644
--- a/js/entry2.js
+++ b/js/entry2.js
@@ -1,5 +1,4 @@
-import { apple2 as _apple2 } from './main2';
+import { apple2 } from './main2';
 import * as UI from './ui/apple2';
 
-export const Apple2 = UI;
-export const apple2 = _apple2;
+export const Apple2 = { ...UI, apple2 };
diff --git a/js/entry2e.js b/js/entry2e.js
index e8016d1..b483b11 100644
--- a/js/entry2e.js
+++ b/js/entry2e.js
@@ -1,5 +1,4 @@
-import { apple2 as _apple2 } from './main2e';
+import { apple2 } from './main2e';
 import * as UI from './ui/apple2';
 
-export const Apple2 = UI;
-export const apple2 = _apple2;
+export const Apple2 = { ...UI, apple2 };
diff --git a/js/gl.ts b/js/gl.ts
index 7246892..da9fe7b 100644
--- a/js/gl.ts
+++ b/js/gl.ts
@@ -602,6 +602,7 @@ export class VideoModesGL implements VideoModes {
     private _sv: any;
     private _displayConfig: screenEmu.DisplayConfiguration;
     private _monoMode: boolean = false;
+    private _scanlines: boolean = false;
 
     public ready: Promise<void>
 
@@ -631,7 +632,6 @@ export class VideoModesGL implements VideoModes {
     private defaultMonitor(): screenEmu.DisplayConfiguration {
         const config = new screenEmu.DisplayConfiguration();
         config.displayResolution = new screenEmu.Size(this.canvas.width, this.canvas.height);
-        config.displayResolution = new screenEmu.Size(this.canvas.width, this.canvas.height);
         config.displayScanlineLevel = 0.5;
         config.videoWhiteOnly = true;
         config.videoSaturation = 0.8;
@@ -645,7 +645,6 @@ export class VideoModesGL implements VideoModes {
         // Values taken from openemulator/libemulation/res/library/Monitors/Apple Monitor II.xml
         const config = new screenEmu.DisplayConfiguration();
         config.displayResolution = new screenEmu.Size(this.canvas.width, this.canvas.height);
-        config.displayResolution = new screenEmu.Size(this.canvas.width, this.canvas.height);
         config.videoDecoder = 'CANVAS_MONOCHROME';
         config.videoBrightness = 0.15;
         config.videoContrast = 0.8;
@@ -657,7 +656,7 @@ export class VideoModesGL implements VideoModes {
         config.displayBarrel = 0.1;
         config.displayScanlineLevel = 0.5;
         config.displayCenterLighting = 0.5;
-        config.displayLuninanceGain = 1.5;
+        config.displayLuminanceGain = 1.5;
         return config;
     }
 
@@ -671,6 +670,7 @@ export class VideoModesGL implements VideoModes {
 
         if (this._displayConfig) {
             this._displayConfig.videoWhiteOnly = textMode || this._monoMode;
+            this._displayConfig.displayScanlineLevel = this._scanlines ? 0.5 : 0;
             this._sv.displayConfiguration = this._displayConfig;
         }
     }
@@ -881,6 +881,11 @@ export class VideoModesGL implements VideoModes {
         this._refresh();
     }
 
+    scanlines(on: boolean) {
+        this._scanlines = on;
+        this._refresh();
+    }
+
     getText() {
         return this._grs[pageMode - 1].getText();
     }
diff --git a/js/main2.js b/js/main2.js
index 5089dc0..a20f179 100644
--- a/js/main2.js
+++ b/js/main2.js
@@ -23,8 +23,6 @@ import OriginalROM from './roms/original';
 
 import { Apple2 } from './apple2';
 
-export * from './ui/apple2';
-
 var prefs = new Prefs();
 var romVersion = prefs.readPref('computer_type2');
 var rom;
diff --git a/js/main2e.js b/js/main2e.js
index 23d8950..30654b8 100644
--- a/js/main2e.js
+++ b/js/main2e.js
@@ -18,8 +18,6 @@ import Apple2eEnhancedROM from './roms/apple2enh';
 
 import { Apple2 } from './apple2';
 
-export * from './ui/apple2';
-
 var prefs = new Prefs();
 var romVersion = prefs.readPref('computer_type2e');
 var enhanced = false;
diff --git a/js/prefs.ts b/js/prefs.ts
index 548ac83..5df7b85 100644
--- a/js/prefs.ts
+++ b/js/prefs.ts
@@ -17,6 +17,8 @@ export default class Prefs {
         return havePrefs;
     }
 
+    readPref(name: string): string | null
+    readPref(name: string, defaultValue: string): string
     readPref(name: string, defaultValue: string | null = null) {
         if (havePrefs) {
             return window.localStorage.getItem(name) ?? defaultValue;
diff --git a/js/ui/apple2.ts b/js/ui/apple2.ts
index 6e791eb..8393fbf 100644
--- a/js/ui/apple2.ts
+++ b/js/ui/apple2.ts
@@ -1,10 +1,10 @@
 import MicroModal from 'micromodal';
 
 import { base64_json_parse, base64_json_stringify } from '../base64';
-import Audio from './audio';
+import { Audio, SOUND_ENABLED_OPTION } from './audio';
 import DriveLights from './drive_lights';
 import { byte, DISK_FORMATS, includes, word } from '../types';
-import { gamepad, configGamepad, initGamepad, GamepadConfiguration } from './gamepad';
+import { initGamepad, GamepadConfiguration } from './gamepad';
 import KeyBoard from './keyboard';
 import Tape, { TAPE_TYPES } from './tape';
 
@@ -12,7 +12,6 @@ import ApplesoftDump from '../applesoft/decompiler';
 import ApplesoftCompiler from '../applesoft/compiler';
 
 import { debug, gup, hup } from '../util';
-import Prefs from '../prefs';
 import { Apple2, Stats } from '../apple2';
 import DiskII, { DriveNumber, DRIVE_NUMBERS } from '../cards/disk2';
 import SmartPort from '../cards/smartport';
@@ -22,9 +21,13 @@ import Apple2IO from '../apple2io';
 import { JSONDisk } from '../formats/format_utils';
 import Printer from './printer';
 
+import { OptionsModal } from './options_modal';
+import { Screen } from './screen';
+import { JoyStick } from './joystick';
+import { System } from './system';
+
 let paused = false;
 
-let focused = false;
 let startTime = Date.now();
 let lastCycles = 0;
 let lastFrames = 0;
@@ -32,6 +35,8 @@ let lastRenderedFrames = 0;
 
 let hashtag = document.location.hash;
 
+const optionsModal = new OptionsModal();
+
 interface DiskDescriptor {
     name: string;
     disk?: number;
@@ -60,6 +65,9 @@ let _disk2: DiskII;
 let _smartPort: SmartPort;
 let _printer: Printer;
 let audio: Audio;
+let screen: Screen;
+let joystick: JoyStick;
+let system: System;
 let keyboard: KeyBoard;
 let io: Apple2IO;
 let _currentDrive: DriveNumber = 1;
@@ -350,13 +358,11 @@ function doLoadLocalDisk(drive: DriveNumber, file: File) {
 
         if (result.byteLength >= 800 * 1024) {
             if (_smartPort.setBinary(drive, name, ext, result)) {
-                focused = false;
                 initGamepad();
             }
         } else {
             if (includes(DISK_FORMATS, ext)
                 && _disk2.setBinary(drive, name, ext, result)) {
-                focused = false;
                 initGamepad();
             } else {
                 openAlert(`Unable to load ${name}`);
@@ -441,7 +447,6 @@ function openManage() {
     MicroModal.show('manage-modal');
 }
 
-const prefs = new Prefs();
 let showStats = 0;
 
 export function updateKHz() {
@@ -483,11 +488,18 @@ export function toggleShowFPS() {
     showStats = ++showStats % 3;
 }
 
-export function updateSound() {
-    const soundCheckbox = document.querySelector<HTMLInputElement>('#enable_sound')!;
-    const on = soundCheckbox.checked;
+export function toggleSound() {
+    const on = !audio.isEnabled();
+    optionsModal.setOption(SOUND_ENABLED_OPTION, on);
+    updateSoundButton(on);
+}
+
+function initSoundToggle() {
+    updateSoundButton(audio.isEnabled());
+}
+
+function updateSoundButton(on: boolean) {
     const label = document.querySelector<HTMLDivElement>('#toggle-sound i')!;
-    audio.enable(on);
     if (on) {
         label.classList.remove('fa-volume-off');
         label.classList.add('fa-volume-up');
@@ -651,7 +663,7 @@ declare global {
     }
 }
 
-let oldcat = '';
+let oldCat = '';
 let option;
 for (let idx = 0; idx < window.disk_index.length; idx++) {
     const file = window.disk_index[idx];
@@ -661,14 +673,14 @@ for (let idx = 0; idx < window.disk_index.length; idx++) {
     if (file.e && !window.e) {
         continue;
     }
-    if (cat != oldcat) {
+    if (cat != oldCat) {
         option = document.createElement('option');
         option.value = cat;
         option.innerText = cat;
         categorySelect.append(option);
 
         disk_categories[cat] = [];
-        oldcat = cat;
+        oldCat = cat;
     }
     disk_categories[cat].push(file);
     if (disk) {
@@ -711,128 +723,6 @@ function processHash(hash: string) {
     }
 }
 
-
-/*
- * Keyboard/Gamepad routines
- */
-declare global {
-    interface Document {
-        webkitCancelFullScreen: () => void;
-        webkitIsFullScreen: boolean;
-        mozCancelFullScreen: () => void;
-        mozIsFullScreen: boolean;
-    }
-    interface Element {
-        webkitRequestFullScreen: (options?: any) => void;
-        mozRequestFullScreen: () => void;
-    }
-}
-
-
-function _keydown(evt: KeyboardEvent) {
-    if (!focused && (!evt.metaKey || evt.ctrlKey || window.e)) {
-        evt.preventDefault();
-
-        const key = keyboard.mapKeyEvent(evt);
-        if (key !== 0xff) {
-            io.keyDown(key);
-        }
-    }
-    if (evt.keyCode === 112) { // F1 - Reset
-        cpu.reset();
-        evt.preventDefault(); // prevent launching help
-    } else if (evt.keyCode === 113) { // F2 - Full Screen
-        const elem = document.getElementById('screen')!;
-        if (evt.shiftKey) { // Full window, but not full screen
-            document.body.classList.toggle('full-page');
-        } else if (document.webkitCancelFullScreen) {
-            if (document.webkitIsFullScreen) {
-                document.webkitCancelFullScreen();
-            } else {
-                const allowKeyboardInput = (Element as any).ALLOW_KEYBOARD_INPUT;
-                if (allowKeyboardInput) {
-                    elem.webkitRequestFullScreen(allowKeyboardInput);
-                } else {
-                    elem.webkitRequestFullScreen();
-                }
-            }
-        } else if (document.mozCancelFullScreen) {
-            if (document.mozIsFullScreen) {
-                document.mozCancelFullScreen();
-            } else {
-                elem.mozRequestFullScreen();
-            }
-        }
-    } else if (evt.keyCode === 114) { // F3
-        io.keyDown(0x1b);
-    } else if (evt.keyCode === 117) { // F6 Quick Save
-        window.localStorage.state = base64_json_stringify(_apple2.getState());
-    } else if (evt.keyCode === 120) { // F9 Quick Restore
-        if (window.localStorage.state) {
-            _apple2.setState(base64_json_parse(window.localStorage.state));
-        }
-    } else if (evt.keyCode == 16) { // Shift
-        keyboard.shiftKey(true);
-    } else if (evt.keyCode == 20) { // Caps lock
-        keyboard.capslockKey();
-    } else if (evt.keyCode == 17) { // Control
-        keyboard.controlKey(true);
-    } else if (evt.keyCode == 91 || evt.keyCode == 93) { // Command
-        keyboard.commandKey(true);
-    } else if (evt.keyCode == 18) { // Alt
-        if (evt.location == 1) {
-            keyboard.commandKey(true);
-        } else {
-            keyboard.optionKey(true);
-        }
-    }
-}
-
-function _keyup(evt: KeyboardEvent) {
-    if (!focused)
-        io.keyUp();
-
-    if (evt.keyCode == 16) { // Shift
-        keyboard.shiftKey(false);
-    } else if (evt.keyCode == 17) { // Control
-        keyboard.controlKey(false);
-    } else if (evt.keyCode == 91 || evt.keyCode == 93) { // Command
-        keyboard.commandKey(false);
-    } else if (evt.keyCode == 18) { // Alt
-        if (evt.location == 1) {
-            keyboard.commandKey(false);
-        } else {
-            keyboard.optionKey(false);
-        }
-    }
-}
-
-export function updateScreen() {
-    const mono = document.querySelector<HTMLInputElement>('#mono_screen')!.checked;
-    const scanlines = document.querySelector<HTMLInputElement>('#show_scanlines')!.checked;
-    const gl = document.querySelector<HTMLInputElement>('#gl_canvas')!.checked;
-
-    const screen = document.querySelector<HTMLDivElement>('#screen')!;
-    const overscan = document.querySelector<HTMLDivElement>('.overscan')!;
-    if (scanlines && !gl) {
-        overscan.classList.add('scanlines');
-    } else {
-        overscan.classList.remove('scanlines');
-    }
-    if (mono && !gl) {
-        screen.classList.add('mono');
-    } else {
-        screen.classList.remove('mono');
-    }
-    vm.mono(mono);
-}
-
-export function updateCPU() {
-    const accelerated = document.querySelector<HTMLInputElement>('#accelerator_toggle')!.checked;
-    const kHz = accelerated ? 4092 : 1023;
-    io.updateKHz(kHz);
-}
-
 export function updateUI() {
     if (document.location.hash != hashtag) {
         hashtag = document.location.hash;
@@ -843,45 +733,6 @@ export function updateUI() {
     }
 }
 
-let disableMouseJoystick = false;
-let flipX = false;
-let flipY = false;
-let swapXY = false;
-
-export function updateJoystick() {
-    disableMouseJoystick = document.querySelector<HTMLInputElement>('#disable_mouse')!.checked;
-    flipX = document.querySelector<HTMLInputElement>('#flip_x')!.checked;
-    flipY = document.querySelector<HTMLInputElement>('#flip_y')!.checked;
-    swapXY = document.querySelector<HTMLInputElement>('#swap_x_y')!.checked;
-    configGamepad(flipX, flipY);
-
-    if (disableMouseJoystick) {
-        io.paddle(0, 0.5);
-        io.paddle(1, 0.5);
-        return;
-    }
-}
-
-function _mousemove(evt: MouseEvent) {
-    if (gamepad || disableMouseJoystick) {
-        return;
-    }
-
-    const s = document.querySelector<HTMLDivElement>('#screen')!;
-    const offset = s.getBoundingClientRect();
-    let x = (evt.pageX - offset.left) / s.clientWidth;
-    let y = (evt.pageY - offset.top) / s.clientHeight;
-    const z = x;
-
-    if (swapXY) {
-        x = y;
-        y = z;
-    }
-
-    io.paddle(0, flipX ? 1 - x : x);
-    io.paddle(1, flipY ? 1 - y : y);
-}
-
 export function pauseRun() {
     const label = document.querySelector<HTMLElement>('#pause-run i')!;
     if (paused) {
@@ -898,14 +749,8 @@ export function pauseRun() {
     paused = !paused;
 }
 
-export function toggleSound() {
-    const enableSound = document.querySelector<HTMLInputElement>('#enable_sound')!;
-    enableSound.checked = !enableSound.checked;
-    updateSound();
-}
-
 export function openOptions() {
-    MicroModal.show('options-modal');
+    optionsModal.openModal();
 }
 
 export function openPrinterModal() {
@@ -946,25 +791,39 @@ function onLoaded(apple2: Apple2, disk2: DiskII, smartPort: SmartPort, printer:
     _smartPort = smartPort;
     _printer = printer;
 
-    keyboard = new KeyBoard(cpu, io, e);
-    keyboard.create('#keyboard');
+    system = new System(io, e);
+    optionsModal.addOptions(system);
+
+    joystick = new JoyStick(io);
+    optionsModal.addOptions(joystick);
+
+    screen = new Screen(vm);
+    optionsModal.addOptions(screen);
+
     audio = new Audio(io);
+    optionsModal.addOptions(audio);
+    initSoundToggle();
 
     MicroModal.init();
 
+    keyboard = new KeyBoard(cpu, io, e);
+    keyboard.create('#keyboard');
+    keyboard.setFunction('F1', () => cpu.reset());
+    keyboard.setFunction('F2', screen.enterFullScreen);
+    keyboard.setFunction('F3', () => io.keyDown(0x1b)); // Escape
+    keyboard.setFunction('F6', () => {
+        window.localStorage.state = base64_json_stringify(_apple2.getState());
+    });
+    keyboard.setFunction('F9', () => {
+        if (window.localStorage.state) {
+            _apple2.setState(base64_json_parse(window.localStorage.state));
+        }
+    });
+
     /*
      * Input Handling
      */
 
-    window.addEventListener('keydown', _keydown);
-    window.addEventListener('keyup', _keyup);
-
-    window.addEventListener('keydown', audio.autoStart);
-    if (window.ontouchstart !== undefined) {
-        window.addEventListener('touchstart', audio.autoStart);
-    }
-    window.addEventListener('mousedown', audio.autoStart);
-
     window.addEventListener('paste', (event: Event) => {
         const paste = (event.clipboardData || window.clipboardData)!.getData('text');
         io.setKeyBuffer(paste);
@@ -976,61 +835,12 @@ function onLoaded(apple2: Apple2, disk2: DiskII, smartPort: SmartPort, printer:
         event.preventDefault();
     });
 
-
-    document.querySelectorAll('canvas').forEach(function (canvas) {
-        canvas.addEventListener('mousedown', function (evt) {
-            if (!gamepad) {
-                io.buttonDown(evt.which == 1 ? 0 : 1);
-            }
-            evt.preventDefault();
-        });
-        canvas.addEventListener('mouseup', function (evt) {
-            if (!gamepad) {
-                io.buttonUp(evt.which == 1 ? 0 : 1);
-            }
-        });
-        canvas.addEventListener('contextmenu', function (evt) {
-            evt.preventDefault();
-        });
-    });
-
-    document.body.addEventListener('mousemove', _mousemove);
-
-    document.querySelectorAll('input,textarea').forEach(function (input) {
-        input.addEventListener('focus', function () { focused = true; });
-        input.addEventListener('blur', function () { focused = false; });
-    });
-
-    if (prefs.havePrefs()) {
-        document.querySelectorAll<HTMLInputElement>('#options-modal input[type=checkbox]').forEach(function (el) {
-            const val = prefs.readPref(el.id);
-            if (val) {
-                el.checked = JSON.parse(val);
-            }
-            el.addEventListener('change', function () {
-                prefs.writePref(el.id, JSON.stringify(el.checked));
-            });
-        });
-        document.querySelectorAll<HTMLSelectElement>('#options-modal select').forEach(function (el) {
-            const val = prefs.readPref(el.id);
-            if (val) {
-                el.value = val;
-            }
-            el.addEventListener('change', function () {
-                prefs.writePref(el.id, el.value);
-            });
-        });
-    }
-
     if (navigator.standalone) {
         document.body.classList.add('standalone');
     }
 
     cpu.reset();
     setInterval(updateKHz, 1000);
-    updateSound();
-    updateScreen();
-    updateCPU();
     initGamepad();
 
     // Check for disks in hashtag
diff --git a/js/ui/audio.ts b/js/ui/audio.ts
index e9371d7..a590c53 100644
--- a/js/ui/audio.ts
+++ b/js/ui/audio.ts
@@ -9,6 +9,7 @@
  * implied warranty.
  */
 
+import { BOOLEAN_OPTION, OptionHandler } from './options_modal';
 import Apple2IO from '../apple2io';
 import { debug } from '../util';
 
@@ -19,9 +20,17 @@ import { debug } from '../util';
 const SAMPLE_SIZE = 1024;
 const SAMPLE_RATE = 44000;
 
-const AudioContext = window.AudioContext || (window as any).webkitAudioContext;
+export const SOUND_ENABLED_OPTION = 'enable_sound';
 
-export default class Audio {
+declare global {
+    interface Window {
+        webkitAudioContext: AudioContext;
+    }
+}
+
+const AudioContext = window.AudioContext || window.webkitAudioContext;
+
+export class Audio implements OptionHandler {
     private sound = true;
     private samples: number[][] = [];
 
@@ -66,6 +75,13 @@ export default class Audio {
                 }
             }
         });
+
+        window.addEventListener('keydown', this.autoStart);
+        if (window.ontouchstart !== undefined) {
+            window.addEventListener('touchstart', this.autoStart);
+        }
+        window.addEventListener('mousedown', this.autoStart);
+
         debug('Sound initialized');
     }
 
@@ -85,7 +101,30 @@ export default class Audio {
         }
     }
 
-    enable(enable: boolean) {
-        this.sound = enable;
+    isEnabled() {
+        return this.sound;
+    }
+
+    getOptions() {
+        return [
+            {
+                name: 'Audio',
+                options: [
+                    {
+                        name: SOUND_ENABLED_OPTION,
+                        label: 'Enabled',
+                        type: BOOLEAN_OPTION,
+                        defaultVal: true,
+                    }
+                ]
+            }
+        ];
+    }
+
+    setOption(name: string, value: boolean) {
+        switch (name) {
+            case SOUND_ENABLED_OPTION:
+                this.sound = value;
+        }
     }
 }
diff --git a/js/ui/joystick.ts b/js/ui/joystick.ts
new file mode 100644
index 0000000..948f689
--- /dev/null
+++ b/js/ui/joystick.ts
@@ -0,0 +1,104 @@
+import Apple2IO from '../apple2io';
+import { BOOLEAN_OPTION, OptionHandler } from './options_modal';
+
+const JOYSTICK_DISABLE = 'disable_mouse';
+const JOYSTICK_FLIP_X_AXIS = 'flip_x';
+const JOYSTICK_FLIP_Y_AXIS = 'flip_y';
+const JOYSTICK_SWAP_AXIS = 'swap_x_y';
+
+export class JoyStick implements OptionHandler {
+    private disableMouseJoystick = false;
+    private flipX = false;
+    private flipY = false;
+    private swapXY = false;
+    private gamepad = false;
+
+    constructor(private io: Apple2IO) {
+        document.addEventListener('mousemove', this.mousemove);
+        document.querySelectorAll('canvas').forEach((canvas) => {
+            canvas.addEventListener('mousedown', (evt) => {
+                if (!this.gamepad) {
+                    io.buttonDown(evt.which == 1 ? 0 : 1);
+                }
+                evt.preventDefault();
+            });
+            canvas.addEventListener('mouseup', (evt) => {
+                if (!this.gamepad) {
+                    io.buttonUp(evt.which == 1 ? 0 : 1);
+                }
+            });
+            canvas.addEventListener('contextmenu', (evt) => {
+                evt.preventDefault();
+            });
+        });
+        window.addEventListener('gamepadconnected', (e: GamepadEvent) => {
+            this.gamepad = !!e.gamepad;
+        });
+    }
+
+    getOptions() {
+        return [
+            {
+                name: 'Joystick',
+                options: [
+                    {
+                        name: JOYSTICK_DISABLE,
+                        label: 'Disable Mouse Joystick',
+                        type: BOOLEAN_OPTION,
+                        defaultVal: false,
+                    },
+                    {
+                        name: JOYSTICK_FLIP_X_AXIS,
+                        label: 'Flip X-Axis',
+                        type: BOOLEAN_OPTION,
+                        defaultVal: false,
+                    },
+                    {
+                        name: JOYSTICK_FLIP_Y_AXIS,
+                        label: 'Flip Y-Axis',
+                        type: BOOLEAN_OPTION,
+                        defaultVal: false,
+                    },
+                    {
+                        name: JOYSTICK_SWAP_AXIS,
+                        label: 'Swap Axis',
+                        type: BOOLEAN_OPTION,
+                        defaultVal: false,
+                    },
+                ],
+            },
+        ];
+    }
+
+    setOption(name: string, _value: boolean) {
+        switch (name) {
+            case JOYSTICK_DISABLE:
+                this.io.paddle(0, 0.5);
+                this.io.paddle(1, 0.5);
+                break;
+            case JOYSTICK_FLIP_X_AXIS:
+            case JOYSTICK_FLIP_Y_AXIS:
+            case JOYSTICK_SWAP_AXIS:
+        }
+    }
+
+    private mousemove = (evt: MouseEvent) => {
+        if (this.gamepad || this.disableMouseJoystick) {
+            return;
+        }
+
+        const s = document.querySelector<HTMLDivElement>('#screen')!;
+        const offset = s.getBoundingClientRect();
+        let x = (evt.pageX - offset.left) / s.clientWidth;
+        let y = (evt.pageY - offset.top) / s.clientHeight;
+        const z = x;
+
+        if (this.swapXY) {
+            x = y;
+            y = z;
+        }
+
+        this.io.paddle(0, this.flipX ? 1 - x : x);
+        this.io.paddle(1, this.flipY ? 1 - y : y);
+    }
+}
diff --git a/js/ui/keyboard.ts b/js/ui/keyboard.ts
index 913dc7c..4bbd676 100644
--- a/js/ui/keyboard.ts
+++ b/js/ui/keyboard.ts
@@ -213,6 +213,8 @@ type Key2e = DeepMemberOf<typeof keys2e>;
 
 type Key = Key2 | Key2e;
 
+type KeyFunction = (key: KeyboardEvent) => void
+
 export default class KeyBoard {
     private kb: HTMLElement;
     private keys;
@@ -227,8 +229,17 @@ export default class KeyBoard {
     private optioned = false;
     private commanded = false;
 
+    private functions: Record<string, KeyFunction> = {};
+
     constructor(private cpu: CPU6502, private io: Apple2IO, private e: boolean) {
         this.keys = e ? keys2e : keys2;
+
+        window.addEventListener('keydown', this.keydown);
+        window.addEventListener('keyup', this.keyup);
+    }
+
+    setFunction(key: string, fn: KeyFunction) {
+        this.functions[key] = fn;
     }
 
     mapKeyEvent(evt: KeyboardEvent) {
@@ -497,7 +508,65 @@ export default class KeyBoard {
         };
     }
 
+    private dialogOpen() {
+        return !!document.querySelector('.modal.is-open');
+    }
+
     private genMouseUp(target: HTMLElement) {
         return () => target.classList.remove('pressed');
     }
+
+    private keydown = (evt: KeyboardEvent) => {
+        if (!this.dialogOpen() && (!evt.metaKey || evt.ctrlKey || this.e)) {
+            evt.preventDefault();
+
+            const key = this.mapKeyEvent(evt);
+            if (key !== 0xff) {
+                this.io.keyDown(key);
+                return;
+            }
+        }
+
+        if (evt.key === 'Shift') {
+            this.shiftKey(true);
+        } else if (evt.key === 'CapsLock') {
+            this.capslockKey();
+        } else if (evt.key === 'Control') {
+            this.controlKey(true);
+        } else if (evt.key === 'Meta') { // AKA Command
+            this.commandKey(true);
+        } else if (evt.key === 'Alt') {
+            if (evt.location === 1) {
+                this.commandKey(true);
+            } else {
+                this.optionKey(true);
+            }
+        } else {
+            if (evt.key in this.functions) {
+                this.functions[evt.key](evt);
+                evt.preventDefault();
+            }
+        }
+
+    }
+
+    private keyup = (evt: KeyboardEvent) => {
+        if (!this.dialogOpen()) {
+            this.io.keyUp();
+        }
+
+        if (evt.key === 'Shift') { // Shift
+            this.shiftKey(false);
+        } else if (evt.key === 'Control') { // Control
+            this.controlKey(false);
+        } else if (evt.key === 'Meta') { // AKA Command
+            this.commandKey(false);
+        } else if (evt.key === 'Alt') { // Alt
+            if (evt.location === 1) {
+                this.commandKey(false);
+            } else {
+                this.optionKey(false);
+            }
+        }
+    }
 }
diff --git a/js/ui/options_modal.ts b/js/ui/options_modal.ts
new file mode 100644
index 0000000..4e38ca5
--- /dev/null
+++ b/js/ui/options_modal.ts
@@ -0,0 +1,178 @@
+import Prefs from '../prefs';
+import MicroModal from 'micromodal';
+
+export const BOOLEAN_OPTION = 'BOOLEAN_OPTION';
+export const SELECT_OPTION = 'SELECT_OPTION';
+
+export interface Option {
+    name: string
+    label: string
+    type: string
+    defaultVal: string | boolean
+}
+
+export interface BooleanOption extends Option {
+    type: typeof BOOLEAN_OPTION
+    defaultVal: boolean
+}
+
+export interface SelectOption extends Option {
+    type: typeof SELECT_OPTION
+    defaultVal: string
+    values: Array<{name: string, value: string}>
+}
+
+export interface OptionSection {
+    name: string
+    options: Option[]
+}
+
+export interface OptionHandler {
+    getOptions: () => OptionSection[]
+    setOption: (name: string, value: string | boolean) => void
+}
+
+export class OptionsModal {
+    private prefs: Prefs = new Prefs();
+    private options: Record<string, Option> = {}
+    private handlers: Record<string, OptionHandler> = {}
+    private sections: OptionSection[] = []
+
+    construct() {
+        this.prefs = new Prefs();
+    }
+
+    addOptions(handler: OptionHandler) {
+        const sections = handler.getOptions();
+        for (const section of sections) {
+            const { options } = section;
+            for (const option of options) {
+                const { name } = option;
+                this.handlers[name] = handler;
+                this.options[name] = option;
+                const value = this.getOption(name);
+                if (value != null) {
+                    handler.setOption(name, value);
+                }
+            }
+            this.sections.push(section);
+        }
+    }
+
+    getOption(name: string): string | boolean | undefined {
+        const option = this.options[name];
+        if (option) {
+            const { name, defaultVal, type } = option;
+            const stringVal = String(defaultVal);
+            const prefVal = this.prefs.readPref(name, stringVal);
+            switch (type) {
+                case BOOLEAN_OPTION:
+                    return prefVal === 'true';
+                default:
+                    return prefVal;
+            }
+        }
+    }
+
+    setOption(name: string, value: string | boolean) {
+        if (name in this.options) {
+            const handler = this.handlers[name];
+            const option = this.options[name];
+            this.prefs.writePref(name, String(value));
+            switch (option.type) {
+                case BOOLEAN_OPTION:
+                    handler.setOption(name, Boolean(value));
+                    break;
+                default:
+                    handler.setOption(name, String(value));
+            }
+        }
+    }
+
+    openModal() {
+        const content = document.querySelector('#options-modal-content');
+        if (content) {
+            content.innerHTML = '';
+            for (const section of this.sections) {
+                const { name, options } = section;
+
+                // Section header
+                const header = document.createElement('h3');
+                header.textContent = name;
+                content.appendChild(header);
+
+                // Preferences
+                const list = document.createElement('ul');
+                for (const option of options) {
+                    const { name, label, defaultVal, type } = option;
+                    const onChange = (evt: InputEvent) => {
+                        if (evt.target) {
+                            const inputElement = evt.target as HTMLInputElement;
+                            switch (type) {
+                                case BOOLEAN_OPTION:
+                                    this.setOption(name, inputElement.checked);
+                                    break;
+                                default:
+                                    this.setOption(name, inputElement.value);
+                            }
+                        }
+                    };
+
+                    const listItem = document.createElement('li');
+
+                    let element: HTMLElement;
+                    switch (type) {
+                        case BOOLEAN_OPTION:
+                            {
+                                const inputElement = document.createElement('input');
+                                const checked = this.prefs.readPref(name, String(defaultVal)) === 'true';
+                                inputElement.setAttribute('type', 'checkbox');
+                                inputElement.checked = checked;
+                                element = inputElement;
+                            }
+                            break;
+                        case SELECT_OPTION:
+                            {
+                                const selectOption = option as SelectOption;
+                                const selectElement = document.createElement('select');
+                                const selected = this.prefs.readPref(name, String(defaultVal));
+                                for (const value of selectOption.values) {
+                                    const optionElement = document.createElement('option');
+                                    optionElement.value = value.value;
+                                    optionElement.textContent = value.name;
+                                    optionElement.selected = value.value === selected;
+                                    selectElement.appendChild(optionElement);
+                                }
+                                element = selectElement;
+                            }
+                            break;
+                        default:
+                        {
+                            const inputElement = document.createElement('input');
+                            const value = this.prefs.readPref(name, String(defaultVal));
+                            inputElement.value = value;
+                            element = inputElement;
+                        }
+                    }
+                    element.id = name;
+                    element.addEventListener('change', onChange);
+                    listItem.appendChild(element);
+                    const labelElement = document.createElement('label');
+
+                    labelElement.textContent = label;
+                    labelElement.setAttribute('for', name);
+                    listItem.appendChild(labelElement);
+
+                    list.appendChild(listItem);
+                }
+                content.appendChild(list);
+            }
+            const reloadElement = document.createElement('i');
+            reloadElement.textContent = '* Reload page to take effect';
+            content.append(reloadElement);
+        } else {
+            console.error('Cannot find target div#options-modal-content');
+        }
+        MicroModal.show('options-modal');
+    }
+}
diff --git a/js/ui/screen.ts b/js/ui/screen.ts
new file mode 100644
index 0000000..9dfc599
--- /dev/null
+++ b/js/ui/screen.ts
@@ -0,0 +1,85 @@
+import { VideoModes } from '../videomodes';
+import { BOOLEAN_OPTION, OptionHandler } from './options_modal';
+
+const SCREEN_MONO = 'mono_screen';
+const SCREEN_SCANLINE = 'show_scanlines';
+const SCREEN_GL = 'gl_canvas';
+
+declare global {
+    interface Document {
+        webkitCancelFullScreen: () => void;
+        webkitIsFullScreen: boolean;
+        mozCancelFullScreen: () => void;
+        mozIsFullScreen: boolean;
+    }
+    interface Element {
+        webkitRequestFullScreen: (options?: any) => void;
+        mozRequestFullScreen: () => void;
+    }
+}
+export class Screen implements OptionHandler {
+    constructor(private vm: VideoModes) {}
+
+    enterFullScreen = (evt: KeyboardEvent) => {
+        const elem = document.getElementById('screen')!;
+        if (evt.shiftKey) { // Full window, but not full screen
+            document.body.classList.toggle('full-page');
+        } else if (document.webkitCancelFullScreen) {
+            if (document.webkitIsFullScreen) {
+                document.webkitCancelFullScreen();
+            } else {
+                const allowKeyboardInput = (Element as any).ALLOW_KEYBOARD_INPUT;
+                if (allowKeyboardInput) {
+                    elem.webkitRequestFullScreen(allowKeyboardInput);
+                } else {
+                    elem.webkitRequestFullScreen();
+                }
+            }
+        } else if (document.mozCancelFullScreen) {
+            if (document.mozIsFullScreen) {
+                document.mozCancelFullScreen();
+            } else {
+                elem.mozRequestFullScreen();
+            }
+        }
+    }
+
+    getOptions() {
+        return [
+            {
+                name: 'Screen',
+                options: [
+                    {
+                        name: SCREEN_MONO,
+                        label: 'Mono Screen',
+                        type: BOOLEAN_OPTION,
+                        defaultVal: false,
+                    },
+                    {
+                        name: SCREEN_SCANLINE,
+                        label: 'Show Scanlines',
+                        type: BOOLEAN_OPTION,
+                        defaultVal: false,
+                    },
+                    {
+                        name: SCREEN_GL,
+                        label: 'GL Renderer *',
+                        type: BOOLEAN_OPTION,
+                        defaultVal: true,
+                    },
+                ]
+            }
+        ];
+    }
+
+    setOption(name: string, value: boolean) {
+        switch (name) {
+            case SCREEN_MONO:
+                this.vm.mono(value);
+                break;
+            case SCREEN_SCANLINE:
+                this.vm.scanlines(value);
+                break;
+        }
+    }
+}
diff --git a/js/ui/system.ts b/js/ui/system.ts
new file mode 100644
index 0000000..132abda
--- /dev/null
+++ b/js/ui/system.ts
@@ -0,0 +1,98 @@
+import { BOOLEAN_OPTION, SELECT_OPTION, OptionHandler } from './options_modal';
+import Apple2IO from '../apple2io';
+
+const SYSTEM_TYPE_APPLE2E = 'computer_type2e';
+const SYSTEM_TYPE_APPLE2 = 'computer_type2';
+const SYSTEM_CPU_ACCELERATED = 'accelerator_toggle';
+
+export class System implements OptionHandler {
+    constructor(private io: Apple2IO, private e: boolean) {}
+
+    getOptions() {
+        return [
+            {
+                name: 'Type',
+                options: this.e ? [
+                    {
+                        name: SYSTEM_TYPE_APPLE2E,
+                        label: ' *',
+                        type: SELECT_OPTION,
+                        defaultVal: 'apple2enh',
+                        values: [
+                            {
+                                value: 'apple2enh',
+                                name: 'Enhanced Apple //e'
+                            },
+                            {
+                                value: 'apple2e',
+                                name: 'Apple //e'
+                            },
+                            {
+                                value: 'apple2rm',
+                                name: 'Enhanced Apple //e (Reactive Micro)'
+                            },
+                        ]
+                    }
+                ] : [
+                    {
+                        name: SYSTEM_TYPE_APPLE2,
+                        label: ' *',
+                        type: SELECT_OPTION,
+                        defaultVal: 'apple2plus',
+                        values: [
+                            {
+                                value: 'apple2plus',
+                                name: 'Apple ][+'
+                            },
+                            {
+                                value: 'apple2',
+                                name: 'Autostart Apple ]['
+                            },
+                            {
+                                value: 'apple213',
+                                name: '13 Sector Apple ]['
+                            },
+                            {
+                                value: 'original',
+                                name: 'Apple ]['
+                            },
+                            {
+                                value: 'apple2j',
+                                name: 'Apple ][j+'
+                            },
+                            {
+                                value: 'apple2lc',
+                                name: 'Apple ][+ (lowercase font)'
+                            },
+                            {
+                                value: 'apple2pig',
+                                name: 'Apple ][+ (pig font)'
+                            },
+                        ]
+                    },
+                ]
+            }, {
+                name: 'CPU',
+                options: [
+                    {
+                        name: SYSTEM_CPU_ACCELERATED,
+                        label: 'Accelerated',
+                        type: BOOLEAN_OPTION,
+                        defaultVal: true,
+                    },
+                ]
+            }
+        ];
+    }
+
+    setOption(value: string, name: string | boolean ) {
+        switch (name) {
+            case SYSTEM_CPU_ACCELERATED:
+                {
+                    const kHz = value ? 4092 : 1023;
+                    this.io.updateKHz(kHz);
+                }
+                break;
+        }
+    }
+}
diff --git a/js/util.ts b/js/util.ts
index ffb3f83..738cb78 100644
--- a/js/util.ts
+++ b/js/util.ts
@@ -97,16 +97,9 @@ export function toBinary(v: byte) {
  * @param name the parameter name. Note that `name` must not have any RegExp
  *     meta-characters except '[' and ']' or it will fail.
  */
-// From http://www.netlobo.com/url_query_string_javascript.html
 export function gup(name: string) {
-    name = name.replace(/[[]/, '\\[').replace(/[\]]/, '\\]');
-    const regexS = '[\\?&]' + name + '=([^&#]*)';
-    const regex = new RegExp(regexS);
-    const results = regex.exec(window.location.href);
-    if (!results)
-        return '';
-    else
-        return results[1];
+    const params = new URLSearchParams(window.location.search);
+    return params.get(name);
 }
 
 /** Returns the URL fragment. */
diff --git a/js/videomodes.ts b/js/videomodes.ts
index ee02766..a773f9f 100644
--- a/js/videomodes.ts
+++ b/js/videomodes.ts
@@ -71,6 +71,7 @@ export interface VideoModes extends Restorable<VideoModesState> {
     isText(): boolean
 
     mono(on: boolean): void
+    scanlines(on: boolean): void
 
     getText(): string
 
diff --git a/package-lock.json b/package-lock.json
index 41cb8ac..8afd021 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -8,12 +8,14 @@
       "version": "0.0.1",
       "license": "MIT",
       "dependencies": {
-        "apple2shader": "whscullin/apple2shader#f42252d8c2ad7055e3e5f5c39e235a710804e7a6",
+        "apple2shader": "whscullin/apple2shader#d365fa3b45f27890c97a2fe6ecbab6a77d02f177",
         "micromodal": "^0.4.2"
       },
       "devDependencies": {
         "@babel/core": "^7.9.0",
         "@babel/preset-env": "^7.9.0",
+        "@testing-library/dom": "^7.30.3",
+        "@testing-library/user-event": "^13.1.3",
         "@types/jest": "^26.0.14",
         "@types/micromodal": "^0.3.2",
         "@typescript-eslint/eslint-plugin": "^4.6.1",
@@ -1243,6 +1245,16 @@
         "regenerator-runtime": "^0.13.4"
       }
     },
+    "node_modules/@babel/runtime-corejs3": {
+      "version": "7.13.10",
+      "resolved": "https://registry.npmjs.org/@babel/runtime-corejs3/-/runtime-corejs3-7.13.10.tgz",
+      "integrity": "sha512-x/XYVQ1h684pp1mJwOV4CyvqZXqbc8CMsMGUnAbuc82ZCdv1U63w5RSUzgDSXQHG5Rps/kiksH6g2D5BuaKyXg==",
+      "dev": true,
+      "dependencies": {
+        "core-js-pure": "^3.0.0",
+        "regenerator-runtime": "^0.13.4"
+      }
+    },
     "node_modules/@babel/template": {
       "version": "7.12.13",
       "resolved": "https://registry.npmjs.org/@babel/template/-/template-7.12.13.tgz",
@@ -2039,6 +2051,117 @@
         "@sinonjs/commons": "^1.7.0"
       }
     },
+    "node_modules/@testing-library/dom": {
+      "version": "7.30.3",
+      "resolved": "https://registry.npmjs.org/@testing-library/dom/-/dom-7.30.3.tgz",
+      "integrity": "sha512-7JhIg2MW6WPwyikH2iL3o7z+FTVgSOd2jqCwTAHqK7Qal2gRRYiUQyURAxtbK9VXm/UTyG9bRihv8C5Tznr2zw==",
+      "dev": true,
+      "dependencies": {
+        "@babel/code-frame": "^7.10.4",
+        "@babel/runtime": "^7.12.5",
+        "@types/aria-query": "^4.2.0",
+        "aria-query": "^4.2.2",
+        "chalk": "^4.1.0",
+        "dom-accessibility-api": "^0.5.4",
+        "lz-string": "^1.4.4",
+        "pretty-format": "^26.6.2"
+      },
+      "engines": {
+        "node": ">=10"
+      }
+    },
+    "node_modules/@testing-library/dom/node_modules/ansi-styles": {
+      "version": "4.3.0",
+      "resolved": "https://registry.npmjs.org/ansi-styles/-/ansi-styles-4.3.0.tgz",
+      "integrity": "sha512-zbB9rCJAT1rbjiVDb2hqKFHNYLxgtk8NURxZ3IZwD3F6NtxbXZQCnnSi1Lkx+IDohdPlFp222wVALIheZJQSEg==",
+      "dev": true,
+      "dependencies": {
+        "color-convert": "^2.0.1"
+      },
+      "engines": {
+        "node": ">=8"
+      },
+      "funding": {
+        "url": "https://github.com/chalk/ansi-styles?sponsor=1"
+      }
+    },
+    "node_modules/@testing-library/dom/node_modules/chalk": {
+      "version": "4.1.0",
+      "resolved": "https://registry.npmjs.org/chalk/-/chalk-4.1.0.tgz",
+      "integrity": "sha512-qwx12AxXe2Q5xQ43Ac//I6v5aXTipYrSESdOgzrN+9XjgEpyjpKuvSGaN4qE93f7TQTlerQQ8S+EQ0EyDoVL1A==",
+      "dev": true,
+      "dependencies": {
+        "ansi-styles": "^4.1.0",
+        "supports-color": "^7.1.0"
+      },
+      "engines": {
+        "node": ">=10"
+      },
+      "funding": {
+        "url": "https://github.com/chalk/chalk?sponsor=1"
+      }
+    },
+    "node_modules/@testing-library/dom/node_modules/color-convert": {
+      "version": "2.0.1",
+      "resolved": "https://registry.npmjs.org/color-convert/-/color-convert-2.0.1.tgz",
+      "integrity": "sha512-RRECPsj7iu/xb5oKYcsFHSppFNnsj/52OVTRKb4zP5onXwVF3zVmmToNcOfGC+CRDpfK/U584fMg38ZHCaElKQ==",
+      "dev": true,
+      "dependencies": {
+        "color-name": "~1.1.4"
+      },
+      "engines": {
+        "node": ">=7.0.0"
+      }
+    },
+    "node_modules/@testing-library/dom/node_modules/color-name": {
+      "version": "1.1.4",
+      "resolved": "https://registry.npmjs.org/color-name/-/color-name-1.1.4.tgz",
+      "integrity": "sha512-dOy+3AuW3a2wNbZHIuMZpTcgjGuLU/uBL/ubcZF9OXbDo8ff4O8yVp5Bf0efS8uEoYo5q4Fx7dY9OgQGXgAsQA==",
+      "dev": true
+    },
+    "node_modules/@testing-library/dom/node_modules/has-flag": {
+      "version": "4.0.0",
+      "resolved": "https://registry.npmjs.org/has-flag/-/has-flag-4.0.0.tgz",
+      "integrity": "sha512-EykJT/Q1KjTWctppgIAgfSO0tKVuZUjhgMr17kqTumMl6Afv3EISleU7qZUzoXDFTAHTDC4NOoG/ZxU3EvlMPQ==",
+      "dev": true,
+      "engines": {
+        "node": ">=8"
+      }
+    },
+    "node_modules/@testing-library/dom/node_modules/supports-color": {
+      "version": "7.2.0",
+      "resolved": "https://registry.npmjs.org/supports-color/-/supports-color-7.2.0.tgz",
+      "integrity": "sha512-qpCAvRl9stuOHveKsn7HncJRvv501qIacKzQlO/+Lwxc9+0q2wLyv4Dfvt80/DPn2pqOBsJdDiogXGR9+OvwRw==",
+      "dev": true,
+      "dependencies": {
+        "has-flag": "^4.0.0"
+      },
+      "engines": {
+        "node": ">=8"
+      }
+    },
+    "node_modules/@testing-library/user-event": {
+      "version": "13.1.3",
+      "resolved": "https://registry.npmjs.org/@testing-library/user-event/-/user-event-13.1.3.tgz",
+      "integrity": "sha512-PDTAb7CDhWzxdEFh29vnSyNFx/gigFPsVli2lgxoX+cbX6Dy2kTetB1J3dLm5TKh4d5nUWFfLpaPMoZuLLZ1Dg==",
+      "dev": true,
+      "dependencies": {
+        "@babel/runtime": "^7.12.5"
+      },
+      "engines": {
+        "node": ">=10",
+        "npm": ">=6"
+      },
+      "peerDependencies": {
+        "@testing-library/dom": ">=7.21.4"
+      }
+    },
+    "node_modules/@types/aria-query": {
+      "version": "4.2.1",
+      "resolved": "https://registry.npmjs.org/@types/aria-query/-/aria-query-4.2.1.tgz",
+      "integrity": "sha512-S6oPal772qJZHoRZLFc/XoZW2gFvwXusYUmXPXkgxJLuEk2vOt7jc4Yo6z/vtI0EBkbPBVrJJ0B+prLIKiWqHg==",
+      "dev": true
+    },
     "node_modules/@types/babel__core": {
       "version": "7.1.14",
       "resolved": "https://registry.npmjs.org/@types/babel__core/-/babel__core-7.1.14.tgz",
@@ -2765,8 +2888,8 @@
     },
     "node_modules/apple2shader": {
       "version": "0.0.1",
-      "resolved": "git+ssh://git@github.com/whscullin/apple2shader.git#f42252d8c2ad7055e3e5f5c39e235a710804e7a6",
-      "integrity": "sha512-J57fukETfkuq1nrYYH83bYLV2Nuzkaq/Q4JF8Y8w7wUtiJHDytnhxI0TD/aGLMxkXACwYXKG8zfja+rFRZfpXw==",
+      "resolved": "git+ssh://git@github.com/whscullin/apple2shader.git#d365fa3b45f27890c97a2fe6ecbab6a77d02f177",
+      "integrity": "sha512-RPexfw95Jk34UUHteg66rCG6GpNXySl2dD7P/WqyhJZ+7J5U9AJrIB/AxJMaBlHTyI8SZTlHvGX4r7tNCC6+qw==",
       "license": "GPL-2.0"
     },
     "node_modules/argparse": {
@@ -2778,6 +2901,19 @@
         "sprintf-js": "~1.0.2"
       }
     },
+    "node_modules/aria-query": {
+      "version": "4.2.2",
+      "resolved": "https://registry.npmjs.org/aria-query/-/aria-query-4.2.2.tgz",
+      "integrity": "sha512-o/HelwhuKpTj/frsOsbNLNgnNGVIFsVP/SW2BSF14gVl7kAfMOJ6/8wUAUvG1R1NHKrfG+2sHZTu0yauT1qBrA==",
+      "dev": true,
+      "dependencies": {
+        "@babel/runtime": "^7.10.2",
+        "@babel/runtime-corejs3": "^7.10.2"
+      },
+      "engines": {
+        "node": ">=6.0"
+      }
+    },
     "node_modules/arr-diff": {
       "version": "4.0.0",
       "resolved": "https://registry.npmjs.org/arr-diff/-/arr-diff-4.0.0.tgz",
@@ -3815,6 +3951,17 @@
         "semver": "bin/semver.js"
       }
     },
+    "node_modules/core-js-pure": {
+      "version": "3.10.1",
+      "resolved": "https://registry.npmjs.org/core-js-pure/-/core-js-pure-3.10.1.tgz",
+      "integrity": "sha512-PeyJH2SE0KuxY5eCGNWA+W+CeDpB6M1PN3S7Am7jSv/Ttuxz2SnWbIiVQOn/TDaGaGtxo8CRWHkXwJscbUHtVw==",
+      "dev": true,
+      "hasInstallScript": true,
+      "funding": {
+        "type": "opencollective",
+        "url": "https://opencollective.com/core-js"
+      }
+    },
     "node_modules/core-util-is": {
       "version": "1.0.2",
       "resolved": "https://registry.npmjs.org/core-util-is/-/core-util-is-1.0.2.tgz",
@@ -4227,6 +4374,12 @@
         "node": ">=6.0.0"
       }
     },
+    "node_modules/dom-accessibility-api": {
+      "version": "0.5.4",
+      "resolved": "https://registry.npmjs.org/dom-accessibility-api/-/dom-accessibility-api-0.5.4.tgz",
+      "integrity": "sha512-TvrjBckDy2c6v6RLxPv5QXOnU+SmF9nBII5621Ve5fu6Z/BDrENurBEvlC1f44lKEUVqOpK4w9E5Idc5/EgkLQ==",
+      "dev": true
+    },
     "node_modules/domexception": {
       "version": "2.0.1",
       "resolved": "https://registry.npmjs.org/domexception/-/domexception-2.0.1.tgz",
@@ -8607,6 +8760,15 @@
         "node": ">=10"
       }
     },
+    "node_modules/lz-string": {
+      "version": "1.4.4",
+      "resolved": "https://registry.npmjs.org/lz-string/-/lz-string-1.4.4.tgz",
+      "integrity": "sha1-wNjq82BZ9wV5bh40SBHPTEmNOiY=",
+      "dev": true,
+      "bin": {
+        "lz-string": "bin/bin.js"
+      }
+    },
     "node_modules/make-dir": {
       "version": "3.1.0",
       "resolved": "https://registry.npmjs.org/make-dir/-/make-dir-3.1.0.tgz",
@@ -14195,6 +14357,16 @@
         "regenerator-runtime": "^0.13.4"
       }
     },
+    "@babel/runtime-corejs3": {
+      "version": "7.13.10",
+      "resolved": "https://registry.npmjs.org/@babel/runtime-corejs3/-/runtime-corejs3-7.13.10.tgz",
+      "integrity": "sha512-x/XYVQ1h684pp1mJwOV4CyvqZXqbc8CMsMGUnAbuc82ZCdv1U63w5RSUzgDSXQHG5Rps/kiksH6g2D5BuaKyXg==",
+      "dev": true,
+      "requires": {
+        "core-js-pure": "^3.0.0",
+        "regenerator-runtime": "^0.13.4"
+      }
+    },
     "@babel/template": {
       "version": "7.12.13",
       "resolved": "https://registry.npmjs.org/@babel/template/-/template-7.12.13.tgz",
@@ -14820,6 +14992,88 @@
         "@sinonjs/commons": "^1.7.0"
       }
     },
+    "@testing-library/dom": {
+      "version": "7.30.3",
+      "resolved": "https://registry.npmjs.org/@testing-library/dom/-/dom-7.30.3.tgz",
+      "integrity": "sha512-7JhIg2MW6WPwyikH2iL3o7z+FTVgSOd2jqCwTAHqK7Qal2gRRYiUQyURAxtbK9VXm/UTyG9bRihv8C5Tznr2zw==",
+      "dev": true,
+      "requires": {
+        "@babel/code-frame": "^7.10.4",
+        "@babel/runtime": "^7.12.5",
+        "@types/aria-query": "^4.2.0",
+        "aria-query": "^4.2.2",
+        "chalk": "^4.1.0",
+        "dom-accessibility-api": "^0.5.4",
+        "lz-string": "^1.4.4",
+        "pretty-format": "^26.6.2"
+      },
+      "dependencies": {
+        "ansi-styles": {
+          "version": "4.3.0",
+          "resolved": "https://registry.npmjs.org/ansi-styles/-/ansi-styles-4.3.0.tgz",
+          "integrity": "sha512-zbB9rCJAT1rbjiVDb2hqKFHNYLxgtk8NURxZ3IZwD3F6NtxbXZQCnnSi1Lkx+IDohdPlFp222wVALIheZJQSEg==",
+          "dev": true,
+          "requires": {
+            "color-convert": "^2.0.1"
+          }
+        },
+        "chalk": {
+          "version": "4.1.0",
+          "resolved": "https://registry.npmjs.org/chalk/-/chalk-4.1.0.tgz",
+          "integrity": "sha512-qwx12AxXe2Q5xQ43Ac//I6v5aXTipYrSESdOgzrN+9XjgEpyjpKuvSGaN4qE93f7TQTlerQQ8S+EQ0EyDoVL1A==",
+          "dev": true,
+          "requires": {
+            "ansi-styles": "^4.1.0",
+            "supports-color": "^7.1.0"
+          }
+        },
+        "color-convert": {
+          "version": "2.0.1",
+          "resolved": "https://registry.npmjs.org/color-convert/-/color-convert-2.0.1.tgz",
+          "integrity": "sha512-RRECPsj7iu/xb5oKYcsFHSppFNnsj/52OVTRKb4zP5onXwVF3zVmmToNcOfGC+CRDpfK/U584fMg38ZHCaElKQ==",
+          "dev": true,
+          "requires": {
+            "color-name": "~1.1.4"
+          }
+        },
+        "color-name": {
+          "version": "1.1.4",
+          "resolved": "https://registry.npmjs.org/color-name/-/color-name-1.1.4.tgz",
+          "integrity": "sha512-dOy+3AuW3a2wNbZHIuMZpTcgjGuLU/uBL/ubcZF9OXbDo8ff4O8yVp5Bf0efS8uEoYo5q4Fx7dY9OgQGXgAsQA==",
+          "dev": true
+        },
+        "has-flag": {
+          "version": "4.0.0",
+          "resolved": "https://registry.npmjs.org/has-flag/-/has-flag-4.0.0.tgz",
+          "integrity": "sha512-EykJT/Q1KjTWctppgIAgfSO0tKVuZUjhgMr17kqTumMl6Afv3EISleU7qZUzoXDFTAHTDC4NOoG/ZxU3EvlMPQ==",
+          "dev": true
+        },
+        "supports-color": {
+          "version": "7.2.0",
+          "resolved": "https://registry.npmjs.org/supports-color/-/supports-color-7.2.0.tgz",
+          "integrity": "sha512-qpCAvRl9stuOHveKsn7HncJRvv501qIacKzQlO/+Lwxc9+0q2wLyv4Dfvt80/DPn2pqOBsJdDiogXGR9+OvwRw==",
+          "dev": true,
+          "requires": {
+            "has-flag": "^4.0.0"
+          }
+        }
+      }
+    },
+    "@testing-library/user-event": {
+      "version": "13.1.3",
+      "resolved": "https://registry.npmjs.org/@testing-library/user-event/-/user-event-13.1.3.tgz",
+      "integrity": "sha512-PDTAb7CDhWzxdEFh29vnSyNFx/gigFPsVli2lgxoX+cbX6Dy2kTetB1J3dLm5TKh4d5nUWFfLpaPMoZuLLZ1Dg==",
+      "dev": true,
+      "requires": {
+        "@babel/runtime": "^7.12.5"
+      }
+    },
+    "@types/aria-query": {
+      "version": "4.2.1",
+      "resolved": "https://registry.npmjs.org/@types/aria-query/-/aria-query-4.2.1.tgz",
+      "integrity": "sha512-S6oPal772qJZHoRZLFc/XoZW2gFvwXusYUmXPXkgxJLuEk2vOt7jc4Yo6z/vtI0EBkbPBVrJJ0B+prLIKiWqHg==",
+      "dev": true
+    },
     "@types/babel__core": {
       "version": "7.1.14",
       "resolved": "https://registry.npmjs.org/@types/babel__core/-/babel__core-7.1.14.tgz",
@@ -15403,9 +15657,9 @@
       }
     },
     "apple2shader": {
-      "version": "git+ssh://git@github.com/whscullin/apple2shader.git#f42252d8c2ad7055e3e5f5c39e235a710804e7a6",
-      "integrity": "sha512-J57fukETfkuq1nrYYH83bYLV2Nuzkaq/Q4JF8Y8w7wUtiJHDytnhxI0TD/aGLMxkXACwYXKG8zfja+rFRZfpXw==",
-      "from": "apple2shader@whscullin/apple2shader#f42252d8c2ad7055e3e5f5c39e235a710804e7a6"
+      "version": "git+ssh://git@github.com/whscullin/apple2shader.git#d365fa3b45f27890c97a2fe6ecbab6a77d02f177",
+      "integrity": "sha512-RPexfw95Jk34UUHteg66rCG6GpNXySl2dD7P/WqyhJZ+7J5U9AJrIB/AxJMaBlHTyI8SZTlHvGX4r7tNCC6+qw==",
+      "from": "apple2shader@whscullin/apple2shader#d365fa3b45f27890c97a2fe6ecbab6a77d02f177"
     },
     "argparse": {
       "version": "1.0.10",
@@ -15416,6 +15670,16 @@
         "sprintf-js": "~1.0.2"
       }
     },
+    "aria-query": {
+      "version": "4.2.2",
+      "resolved": "https://registry.npmjs.org/aria-query/-/aria-query-4.2.2.tgz",
+      "integrity": "sha512-o/HelwhuKpTj/frsOsbNLNgnNGVIFsVP/SW2BSF14gVl7kAfMOJ6/8wUAUvG1R1NHKrfG+2sHZTu0yauT1qBrA==",
+      "dev": true,
+      "requires": {
+        "@babel/runtime": "^7.10.2",
+        "@babel/runtime-corejs3": "^7.10.2"
+      }
+    },
     "arr-diff": {
       "version": "4.0.0",
       "resolved": "https://registry.npmjs.org/arr-diff/-/arr-diff-4.0.0.tgz",
@@ -16248,6 +16512,12 @@
         }
       }
     },
+    "core-js-pure": {
+      "version": "3.10.1",
+      "resolved": "https://registry.npmjs.org/core-js-pure/-/core-js-pure-3.10.1.tgz",
+      "integrity": "sha512-PeyJH2SE0KuxY5eCGNWA+W+CeDpB6M1PN3S7Am7jSv/Ttuxz2SnWbIiVQOn/TDaGaGtxo8CRWHkXwJscbUHtVw==",
+      "dev": true
+    },
     "core-util-is": {
       "version": "1.0.2",
       "resolved": "https://registry.npmjs.org/core-util-is/-/core-util-is-1.0.2.tgz",
@@ -16565,6 +16835,12 @@
         "esutils": "^2.0.2"
       }
     },
+    "dom-accessibility-api": {
+      "version": "0.5.4",
+      "resolved": "https://registry.npmjs.org/dom-accessibility-api/-/dom-accessibility-api-0.5.4.tgz",
+      "integrity": "sha512-TvrjBckDy2c6v6RLxPv5QXOnU+SmF9nBII5621Ve5fu6Z/BDrENurBEvlC1f44lKEUVqOpK4w9E5Idc5/EgkLQ==",
+      "dev": true
+    },
     "domexception": {
       "version": "2.0.1",
       "resolved": "https://registry.npmjs.org/domexception/-/domexception-2.0.1.tgz",
@@ -19884,6 +20160,12 @@
         "yallist": "^4.0.0"
       }
     },
+    "lz-string": {
+      "version": "1.4.4",
+      "resolved": "https://registry.npmjs.org/lz-string/-/lz-string-1.4.4.tgz",
+      "integrity": "sha1-wNjq82BZ9wV5bh40SBHPTEmNOiY=",
+      "dev": true
+    },
     "make-dir": {
       "version": "3.1.0",
       "resolved": "https://registry.npmjs.org/make-dir/-/make-dir-3.1.0.tgz",
diff --git a/package.json b/package.json
index 97416dd..84a1069 100644
--- a/package.json
+++ b/package.json
@@ -26,6 +26,8 @@
   "devDependencies": {
     "@babel/core": "^7.9.0",
     "@babel/preset-env": "^7.9.0",
+    "@testing-library/dom": "^7.30.3",
+    "@testing-library/user-event": "^13.1.3",
     "@types/jest": "^26.0.14",
     "@types/micromodal": "^0.3.2",
     "@typescript-eslint/eslint-plugin": "^4.6.1",
@@ -45,7 +47,7 @@
     "webpack-dev-server": "^4.0.0-beta.1"
   },
   "dependencies": {
-    "apple2shader": "whscullin/apple2shader#f42252d8c2ad7055e3e5f5c39e235a710804e7a6",
+    "apple2shader": "whscullin/apple2shader#d365fa3b45f27890c97a2fe6ecbab6a77d02f177",
     "micromodal": "^0.4.2"
   }
 }
diff --git a/test/js/ui/__snapshots__/options_modal.spec.ts.snap b/test/js/ui/__snapshots__/options_modal.spec.ts.snap
new file mode 100644
index 0000000..54e29b0
--- /dev/null
+++ b/test/js/ui/__snapshots__/options_modal.spec.ts.snap
@@ -0,0 +1,64 @@
+// Jest Snapshot v1, https://goo.gl/fbAQLP
+
+exports[`OptionsModal openModal renders 1`] = `
+<div
+  id="options-modal-content"
+>
+  <h3>
+    Section 1
+  </h3>
+  <ul>
+    <li>
+      <input
+        id="option_1"
+        type="checkbox"
+      />
+      <label
+        for="option_1"
+      >
+        Option 1
+      </label>
+    </li>
+    <li>
+      <select
+        id="option_2"
+      >
+        <option
+          value="select_1"
+        >
+          Select 1
+        </option>
+        <option
+          value="select_2"
+        >
+          Select 2
+        </option>
+      </select>
+      <label
+        for="option_2"
+      >
+        Option 2
+      </label>
+    </li>
+  </ul>
+  <h3>
+    Section 2
+  </h3>
+  <ul>
+    <li>
+      <input
+        id="option_3"
+        type="checkbox"
+      />
+      <label
+        for="option_3"
+      >
+        Option 3
+      </label>
+    </li>
+  </ul>
+  <i>
+    * Reload page to take effect
+  </i>
+</div>
+`;
diff --git a/test/js/ui/options_modal.spec.ts b/test/js/ui/options_modal.spec.ts
new file mode 100644
index 0000000..52eff16
--- /dev/null
+++ b/test/js/ui/options_modal.spec.ts
@@ -0,0 +1,138 @@
+import { screen } from '@testing-library/dom';
+import userEvent from '@testing-library/user-event';
+
+import {
+    BOOLEAN_OPTION,
+    SELECT_OPTION,
+    OptionHandler,
+    OptionsModal
+} from 'js/ui/options_modal';
+
+jest.mock('micromodal');
+
+const mockOptionHandler: OptionHandler = {
+    getOptions() {
+        return [
+            {
+                name: 'Section 1',
+                options: [
+                    {
+                        name: 'option_1',
+                        label: 'Option 1',
+                        type: BOOLEAN_OPTION,
+                        defaultVal: false,
+                    },
+                    {
+                        name: 'option_2',
+                        label: 'Option 2',
+                        type: SELECT_OPTION,
+                        defaultVal: 'select_1',
+                        values: [
+                            {
+                                name: 'Select 1',
+                                value: 'select_1',
+                            },
+                            {
+                                name: 'Select 2',
+                                value: 'select_2',
+                            },
+                        ]
+                    }
+                ]
+            },
+            {
+                name: 'Section 2',
+                options: [
+                    {
+                        name: 'option_3',
+                        label: 'Option 3',
+                        type: BOOLEAN_OPTION,
+                        defaultVal: true,
+                    },
+                ]
+            }
+        ];
+    },
+
+    setOption: jest.fn()
+};
+
+describe('OptionsModal', () => {
+    let modal: OptionsModal;
+    beforeEach(() => {
+        modal = new OptionsModal();
+        modal.addOptions(mockOptionHandler);
+    });
+    afterEach(() => {
+        localStorage.clear();
+    });
+
+    describe('openModal', () => {
+        let content: HTMLDivElement;
+
+        beforeEach(() => {
+            content = document.createElement('div');
+            content.id = 'options-modal-content';
+            document.body.appendChild(content);
+        });
+
+        afterEach(() => {
+            jest.resetAllMocks();
+            content.remove();
+        });
+
+        it('renders', () => {
+            modal.openModal();
+            expect(content).toMatchSnapshot();
+        });
+
+        it('toggles booleans', () => {
+            modal.openModal();
+            const toggle = screen.getByText('Option 3');
+            userEvent.click(toggle);
+            expect(mockOptionHandler.setOption)
+                .toHaveBeenCalledWith('option_3', false);
+        });
+
+        it('selects', () => {
+            modal.openModal();
+            const combobox = screen.getByRole('combobox');
+            userEvent.selectOptions(combobox, 'select_2');
+
+            expect(mockOptionHandler.setOption)
+                .toHaveBeenCalledWith('option_2', 'select_2');
+        });
+    });
+
+    describe('getOption', () => {
+        beforeEach(() => {
+            modal = new OptionsModal();
+            modal.addOptions(mockOptionHandler);
+        });
+        it('gets boolean', () => {
+            expect(modal.getOption('option_1'))
+                .toEqual(false);
+            expect(modal.getOption('option_3'))
+                .toEqual(true);
+        });
+
+        it('gets selector', () => {
+            expect(modal.getOption('option_2'))
+                .toEqual('select_1');
+        });
+    });
+
+    describe('setOption', () => {
+        it('sets boolean', () => {
+            modal.setOption('option_1', true);
+            expect(mockOptionHandler.setOption)
+                .toHaveBeenCalledWith('option_1', true);
+        });
+
+        it('sets selector', () => {
+            modal.setOption('option_2', 'select_2');
+            expect(mockOptionHandler.setOption)
+                .toHaveBeenCalledWith('option_2', 'select_2');
+        });
+    });
+});
diff --git a/tsconfig.json b/tsconfig.json
index 9b2f993..96d79eb 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -18,10 +18,14 @@
           "*": [
               "node_modules/*",
               "types/*"
+          ],
+          "js/*": [
+              "js/*"
           ]
-      }
+      },
   },
   "include": [
-      "js/**/*"
+      "js/**/*",
+      "test/**/*",
   ]
 }
diff --git a/webpack.config.js b/webpack.config.js
index 05902d3..7c74fb1 100644
--- a/webpack.config.js
+++ b/webpack.config.js
@@ -20,7 +20,7 @@ module.exports =
         compress: true,
         static: {
             watch: {
-                ignored: /(node_modules|\.git)/
+                ignored: /(node_modules|test|\.git)/
             },
             directory: __dirname,
         },