Adds configurable shortcuts for all zoom levels
// ==UserScript==
// @name Zoom Shortcuts
// @namespace https://greasyfork.org/users/30701-justins83-waze
// @version 2025.09.04
// @description Adds configurable shortcuts for all zoom levels
// @author JustinS83
// @match *://*.waze.com/*editor*
// @exclude *://*.waze.com/user/editor*
// @exclude *://*.waze.com/editor/sdk/*
// @contributionURL https://github.com/WazeDev/Thank-The-Authors
// @grant none
// ==/UserScript==
(function () {
'use strict';
// ===== CONFIGURATION =====
/**
* @typedef {Object} Config
* @property {{min:number, max:number}} ZOOM_RANGE - Min/max zoom levels supported.
* @property {string} SETTINGS_KEY - LocalStorage key for settings.
* @property {string} LOG_PREFIX - Prefix for logging output.
* @property {number} SETTINGS_VERSION - Settings schema version.
*/
const CONFIG = {
ZOOM_RANGE: { min: 10, max: 22 },
SETTINGS_KEY: 'WMEZoomShortcuts_Settings',
LOG_PREFIX: GM_info.script.name,
SETTINGS_VERSION: 1,
};
/**
* List of supported zoom shortcut descriptors.
* @type {Array<{id:string, label:string, level:number}>}
*/
const ZOOM_SHORTCUTS = Array.from({ length: CONFIG.ZOOM_RANGE.max - CONFIG.ZOOM_RANGE.min + 1 }, (_, i) => {
const level = CONFIG.ZOOM_RANGE.min + i;
return { id: `zoom${level}`, label: `Zoom to ${level}`, level };
});
/**
* Keycode mapping for A-Z and 0-9.
* @type {Object.<number, string>}
*/
const KEYCODE_MAP = Object.fromEntries([...Array.from({ length: 26 }, (_, i) => [65 + i, String.fromCharCode(65 + i)]), ...Array.from({ length: 10 }, (_, i) => [48 + i, String(i)])]);
/**
* Modifier lookup values for conversion.
* @type {Object.<string, number>}
*/
const MOD_LOOKUP = { C: 1, S: 2, A: 4 };
/**
* Modifier flag values for combo-to-display.
* @type {Array<{flag:number, char:string}>}
*/
const MOD_FLAGS = [
{ flag: 1, char: 'C' },
{ flag: 2, char: 'S' },
{ flag: 4, char: 'A' },
];
/**
* Settings structure in-memory.
* @type {{version:number, shortcuts: Object.<string, {raw:string|null, combo:string|null}>}}
*/
let settings = { version: CONFIG.SETTINGS_VERSION, shortcuts: {} };
// ===== LOGGING =====
/**
* Simple console logger with prefix.
*/
const log = {
debug: (msg) => console.debug(CONFIG.LOG_PREFIX, msg),
error: (msg) => console.error(CONFIG.LOG_PREFIX, msg),
};
// ===== KEY CONVERSION =====
/**
* Converts a shortcut combo string to raw keycode string for the SDK.
*
* WHY WE NEED THIS:
* The WME SDK is inconsistent in what format it returns for shortcut keys:
* - On initial load: returns combo format ("0", "A+X", "CS+K")
* - After user changes: returns raw format ("0,48", "4,65", "3,75")
* - On page reload: back to combo format again
*
* To ensure consistency in our storage, we always convert TO raw format
* because that's the most reliable format for round-trip storage/retrieval.
*
* EXAMPLES:
* "0" -> "0,48" (single key '0' with no modifiers)
* "A+X" -> "4,88" (Alt + X)
* "CS+K" -> "3,75" (Ctrl+Shift + K)
* "3,75" -> "3,75" (already raw, unchanged)
*
* @param {string} comboStr - Shortcut string from SDK (format varies!)
* @returns {string} Always returns raw format "modifier,keycode"
*/
function comboToRawKeycodes(comboStr) {
if (!comboStr || typeof comboStr !== 'string') return comboStr;
// If already in raw form (modifier,keycode), return unchanged
if (/^\d+,\d+$/.test(comboStr)) return comboStr;
// Handle single digit/letter (no modifiers) - SDK returns just "0" but we need "0,48"
if (/^[A-Z0-9]$/.test(comboStr)) {
return `0,${comboStr.charCodeAt(0)}`;
}
// Handle combo format like "A+X", "CS+K", etc.
const match = comboStr.match(/^([ACS]+)\+([A-Z0-9])$/);
if (!match) return comboStr;
const [, modStr, keyStr] = match;
const modValue = modStr.split('').reduce((acc, m) => acc | (MOD_LOOKUP[m] || 0), 0);
return `${modValue},${keyStr.charCodeAt(0)}`;
}
/**
* Converts raw shortcut keycode to display combo for UI/logging.
*
* WHY WE NEED THIS:
* While we store everything in raw format for consistency, we need human-readable
* combo format for:
* - Logging/debugging output
* - Registering shortcuts with SDK (it accepts combo format)
*
* This handles the SDK's inconsistent return values by normalizing raw format
* back to readable combo format.
*
* EXAMPLES:
* "0,48" -> "0" (just the '0' key)
* "4,88" -> "A+X" (Alt + X)
* "3,75" -> "CS+K" (Ctrl+Shift + K)
* "A+X" -> "A+X" (already combo format, unchanged)
*
* @param {string} keycodeStr - Raw keycode string "modifier,keycode" or combo format
* @returns {string|null} Human-readable combo format or null if no shortcut
*/
function shortcutKeycodesToCombo(keycodeStr) {
if (!keycodeStr || keycodeStr === 'None') return null;
// If already in combo form, return unchanged
if (/^([ACS]+\+)?[A-Z0-9]$/.test(keycodeStr)) return keycodeStr;
// Handle raw format "modifier,keycode" - convert to readable format
const parts = keycodeStr.split(',');
if (parts.length !== 2) return keycodeStr;
const intMod = parseInt(parts[0], 10);
const keyNum = parseInt(parts[1], 10);
if (isNaN(intMod) || isNaN(keyNum)) return keycodeStr;
const modLetters = MOD_FLAGS.filter(({ flag }) => intMod & flag)
.map(({ char }) => char)
.join('');
const keyChar = KEYCODE_MAP[keyNum] || String(keyNum);
// Return just the key if no modifiers, otherwise "MOD+KEY"
return modLetters ? `${modLetters}+${keyChar}` : keyChar;
}
// ===== LEGACY SUPPORT =====
/**
* Mapping legacy setting keys to new shortcut IDs.
* Only needed once during legacy migration.
*/
const LEGACY_MAP = {
ZoomNew10Shortcut: 'zoom10',
ZoomNew11Shortcut: 'zoom11',
Zoom0Shortcut: 'zoom12',
Zoom1Shortcut: 'zoom13',
Zoom2Shortcut: 'zoom14',
Zoom3Shortcut: 'zoom15',
Zoom4Shortcut: 'zoom16',
Zoom5Shortcut: 'zoom17',
Zoom6Shortcut: 'zoom18',
Zoom7Shortcut: 'zoom19',
Zoom8Shortcut: 'zoom20',
Zoom9Shortcut: 'zoom21',
Zoom10Shortcut: 'zoom22',
};
/**
* Converts a legacy shortcut value to {raw, combo} structure.
*
* WHY WE NEED THIS:
* Legacy settings could be stored in various formats:
* - Just keycode: "90"
* - Modifier + keycode: "2,90"
* - Combo + keycode: "CS+90"
* - Special values: "-1", "None", null
*
* We normalize all of these to our standard {raw, combo} structure.
*
* @param {string|number} oldValue - Legacy value, e.g. "2,90", "CS+90", "90", -1
* @returns {{raw:string|null, combo:string|null}}
*/
function convertLegacyValue(oldValue) {
// Handle null, undefined, empty, or disabled values
if (!oldValue || oldValue === '-1' || oldValue === 'None' || oldValue === -1) {
return { raw: null, combo: null };
}
// Convert to string for consistent processing
const valueStr = String(oldValue);
// Normalize common legacy formats
let normalized = valueStr;
if (/^\d+$/.test(valueStr)) {
// Just keycode like "90" → "0,90"
normalized = `0,${valueStr}`;
} else if (/^([ACS]+)\+(\d+)$/.test(valueStr)) {
// Combo + keycode like "CS+90" → "3,90"
const [, modStr, keyStr] = valueStr.match(/^([ACS]+)\+(\d+)$/);
const modValue = modStr.split('').reduce((acc, m) => acc | (MOD_LOOKUP[m] || 0), 0);
normalized = `${modValue},${keyStr}`;
} else if (/^\d+,\d+$/.test(valueStr)) {
// Already in raw format like "2,90" - use as-is
normalized = valueStr;
} else if (/^([ACS]+\+)?[A-Z0-9]$/.test(valueStr)) {
// Modern combo format like "CS+Z" or "A" - convert using our standard function
normalized = comboToRawKeycodes(valueStr);
}
// If none match, leave as-is and let shortcutKeycodesToCombo handle it
const combo = shortcutKeycodesToCombo(normalized);
log.debug(`Legacy conversion: "${oldValue}" → raw:"${normalized}", combo:"${combo}"`);
return { raw: normalized, combo };
}
/**
* Migrates legacy keys in loadedSettings to new format.
*
* WHY THIS IS NEEDED:
* Previous versions stored shortcuts with different key names and formats.
* This function maps old setting keys to new shortcut IDs and converts
* the values to our normalized {raw, combo} structure.
*
* EXAMPLE MIGRATION:
* "Zoom0Shortcut": "2,90" → settings.shortcuts.zoom12 = {raw: "2,90", combo: "S+Z"}
*
* @param {Object} loadedSettings - Loaded settings from storage.
* @returns {boolean} - True if migration occurred.
*/
function performMigration(loadedSettings) {
log.debug('Performing migration from legacy settings...');
let migrated = false;
Object.entries(LEGACY_MAP).forEach(([oldKey, newId]) => {
if (loadedSettings[oldKey] !== undefined) {
// Only migrate if we don't already have a value for the new key
if (!settings.shortcuts[newId] || (settings.shortcuts[newId].raw === null && settings.shortcuts[newId].combo === null)) {
const legacyValue = loadedSettings[oldKey];
settings.shortcuts[newId] = convertLegacyValue(legacyValue);
log.debug(`Migrated ${oldKey} (${legacyValue}) → ${newId} (${JSON.stringify(settings.shortcuts[newId])})`);
migrated = true;
} else {
log.debug(`Skipped migration of ${oldKey} → ${newId} (already has value)`);
}
// Clean up legacy key regardless
delete loadedSettings[oldKey];
}
});
if (migrated) {
settings.version = CONFIG.SETTINGS_VERSION;
log.debug('Migration completed successfully');
return true;
} else {
log.debug('No legacy settings found to migrate');
return false;
}
}
// ===== SETTINGS STORAGE =====
/**
* Loads settings from localStorage, migrates if legacy, ensures all shortcuts initialized.
*
* WHY THIS NEEDS TO HANDLE INCONSISTENT DATA:
* Due to the SDK's inconsistent return formats, we may have stored bad data before
* implementing the normalization fixes. This function now:
* 1. Loads existing settings
* 2. Normalizes any inconsistent raw/combo pairs
* 3. Migrates legacy settings if found
* 4. Ensures all shortcuts have proper structure
*
* FIXES CASES LIKE:
* - raw: "0", combo: "0" → raw: "0,48", combo: "0"
* - raw: "1", combo: "1" → raw: "0,49", combo: "1"
* - Missing combo values, malformed raw values, etc.
*/
function loadSettingsFromStorage() {
try {
const stored = localStorage.getItem(CONFIG.SETTINGS_KEY);
const loadedSettings = stored ? JSON.parse(stored) : {};
// Copy existing structure
settings.shortcuts = loadedSettings.shortcuts || {};
settings.version = loadedSettings.version || 0;
let needsSave = false;
// Handle version updates and legacy migration
if (settings.version < CONFIG.SETTINGS_VERSION) {
log.debug(`Settings version ${settings.version} < ${CONFIG.SETTINGS_VERSION}, checking for migration...`);
// Look for any legacy keys and migrate them
const hasLegacyKeys = Object.keys(loadedSettings).some((key) => key in LEGACY_MAP);
if (hasLegacyKeys) {
needsSave = performMigration(loadedSettings);
} else {
settings.version = CONFIG.SETTINGS_VERSION;
needsSave = true;
log.debug('No legacy settings found, updated version number');
}
} else {
log.debug('Settings are current version, skipping migration check');
}
// Ensure all possible shortcut keys initialized AND normalize any bad data
ZOOM_SHORTCUTS.forEach(({ id }) => {
if (!settings.shortcuts[id]) {
// No existing data - initialize empty
settings.shortcuts[id] = { raw: null, combo: null };
} else {
// Existing data - validate and normalize it
const shortcut = settings.shortcuts[id];
// Check if we have inconsistent/bad raw data (like raw: "0" instead of "0,48")
if (shortcut.raw && shortcut.combo) {
// We have both raw and combo - let's verify they're consistent
const normalizedRaw = comboToRawKeycodes(shortcut.combo);
const normalizedCombo = shortcutKeycodesToCombo(shortcut.raw);
// If our stored raw doesn't match what the combo should produce, fix it
if (shortcut.raw !== normalizedRaw) {
log.debug(`Normalizing inconsistent data for ${id}: raw "${shortcut.raw}" → "${normalizedRaw}"`);
shortcut.raw = normalizedRaw;
needsSave = true;
}
// If our stored combo doesn't match what the raw should produce, fix it
if (shortcut.combo !== normalizedCombo) {
log.debug(`Normalizing inconsistent data for ${id}: combo "${shortcut.combo}" → "${normalizedCombo}"`);
shortcut.combo = normalizedCombo;
needsSave = true;
}
} else if (shortcut.raw && !shortcut.combo) {
// Have raw but missing combo - regenerate combo
shortcut.combo = shortcutKeycodesToCombo(shortcut.raw);
needsSave = true;
log.debug(`Regenerated missing combo for ${id}: "${shortcut.combo}"`);
} else if (shortcut.combo && !shortcut.raw) {
// Have combo but missing raw - regenerate raw
shortcut.raw = comboToRawKeycodes(shortcut.combo);
needsSave = true;
log.debug(`Regenerated missing raw for ${id}: "${shortcut.raw}"`);
}
}
});
// Save if we made any corrections or migrations
if (needsSave) {
localStorage.setItem(CONFIG.SETTINGS_KEY, JSON.stringify(settings));
log.debug('Settings saved after normalization/migration');
}
} catch (e) {
log.error(`Error loading settings: ${e.message}`);
// Reset to defaults if corrupted
settings = { version: CONFIG.SETTINGS_VERSION, shortcuts: {} };
ZOOM_SHORTCUTS.forEach(({ id }) => {
settings.shortcuts[id] = { raw: null, combo: null };
});
// Save the reset defaults
try {
localStorage.setItem(CONFIG.SETTINGS_KEY, JSON.stringify(settings));
log.debug('Reset to default settings due to corruption');
} catch (saveError) {
log.error(`Failed to save reset settings: ${saveError.message}`);
}
}
}
/**
* Saves current shortcut assignments to localStorage.
*
* WHY THIS IS COMPLEX:
* The WME SDK returns different formats at different times:
* 1. Initial page load: combo format ("0", "A+X")
* 2. After user changes shortcuts: raw format ("0,48", "4,88")
* 3. After page reload: back to combo format
*
* We normalize everything to raw format for storage consistency, then convert
* to combo format for display. This ensures our localStorage always has the
* same structure regardless of when this function runs.
*
* STORAGE FORMAT:
* {
* "zoom10": { "raw": "0,48", "combo": "0" },
* "zoom20": { "raw": "4,48", "combo": "A+0" }
* }
*
* @param {Object} sdk - WME SDK object
*/
function saveSettings(sdk) {
try {
const allShortcuts = sdk.Shortcuts.getAllShortcuts();
allShortcuts.forEach((shortcut) => {
if (settings.shortcuts[shortcut.shortcutId]) {
const sdkValue = shortcut.shortcutKeys;
log.debug(`SDK returned for ${shortcut.shortcutId}: "${sdkValue}" (type: ${typeof sdkValue})`);
const raw = comboToRawKeycodes(sdkValue);
const combo = shortcutKeycodesToCombo(raw);
log.debug(`Converted: raw="${raw}", combo="${combo}"`);
settings.shortcuts[shortcut.shortcutId] = { raw, combo };
}
});
settings.version = CONFIG.SETTINGS_VERSION;
localStorage.setItem(CONFIG.SETTINGS_KEY, JSON.stringify(settings));
log.debug('Settings saved');
} catch (e) {
log.error(`Failed to save settings: ${e.message}`);
}
}
// ===== SHORTCUT REGISTRATION =====
/**
* Registers all zoom shortcut combos with SDK.
*
* WHY WE USE COMBO FORMAT HERE:
* The SDK's createShortcut() method expects combo format for shortcutKeys:
* - Works: shortcutKeys: "A+0"
* - Works: shortcutKeys: "0"
* - Doesn't work reliably: shortcutKeys: "4,48"
*
* So we store raw format for consistency but pass combo format to SDK.
* We also handle duplicate key errors by resetting conflicting shortcuts.
*
* @param {Object} sdk - WME SDK instance.
*/
function registerShortcuts(sdk) {
let needsSave = false;
ZOOM_SHORTCUTS.forEach(({ id, label, level }) => {
try {
// SDK expects combo format, not raw format
const comboKeys = settings.shortcuts[id]?.combo || null;
sdk.Shortcuts.createShortcut({
shortcutId: id,
shortcutKeys: comboKeys, // Use combo format for SDK
description: label,
callback: () => sdk.Map.setZoomLevel({ zoomLevel: level }),
});
} catch (e) {
// Handle duplicate key conflicts by resetting to no shortcut
if (e.message && e.message.includes('already in use')) {
log.debug(`Duplicate key detected for ${id}, resetting: ${e.message}`);
settings.shortcuts[id] = { raw: null, combo: null };
needsSave = true;
// Try to register again with null (no shortcut)
try {
sdk.Shortcuts.createShortcut({
shortcutId: id,
shortcutKeys: null,
description: label,
callback: () => sdk.Map.setZoomLevel({ zoomLevel: level }),
});
log.debug(`Successfully registered ${id} with no shortcut key`);
} catch (retryError) {
log.error(`Failed to register ${id} even with null keys: ${retryError.message}`);
}
} else {
log.error(`Failed to register ${id}: ${e.message}`);
}
}
});
// Save settings if any duplicates were reset
if (needsSave) {
try {
localStorage.setItem(CONFIG.SETTINGS_KEY, JSON.stringify(settings));
log.debug('Settings saved after resolving duplicate shortcuts');
} catch (saveError) {
log.error(`Failed to save settings after duplicate resolution: ${saveError.message}`);
}
}
}
// ===== MAIN ENTRYPOINT =====
/**
* Initializes the Zoom Shortcuts script.
* @param {Object} sdk - SDK instance.
*/
async function main(sdk) {
try {
loadSettingsFromStorage();
registerShortcuts(sdk);
// Save on tab/window exit
window.addEventListener('beforeunload', () => saveSettings(sdk));
/**
* Global API exposed for debugging and manual ops.
*/
window.WMEZoomShortcuts = {
/** Returns a shallow copy of current settings. */
settings: () => ({ ...settings }),
/** Logs assignments to dev console. */
printCurrentAssignments: () => {
ZOOM_SHORTCUTS.forEach(({ id, label }) => {
const combo = settings.shortcuts[id]?.combo || '(none)';
log.debug(`${label} (${id}): ${combo}`);
});
},
/** Triggers save to localStorage immediately. */
saveSettings: () => saveSettings(sdk),
/** Reregisters shortcut keys from settings (for debug). */
reregisterShortcuts: () => registerShortcuts(sdk),
/** Returns settings version (for diagnostics). */
getVersion: () => settings.version,
};
window.WMEZoomShortcuts.printCurrentAssignments();
log.debug('...initialized');
} catch (e) {
log.error(`Initialization failed: ${e.message}`);
}
}
// ===== SDK INTEGRATION & INIT =====
// Block load if SDK isn't present.
if (!window.SDK_INITIALIZED) {
log.error('SDK_INITIALIZED promise not found');
return;
}
window.SDK_INITIALIZED.then(() => {
try {
const sdk = getWmeSdk({
scriptId: 'wme-zoom-shortcuts',
scriptName: 'Zoom Shortcuts',
});
if (!sdk) throw new Error('Failed to initialize SDK');
main(sdk);
} catch (e) {
log.error(`SDK initialization failed: ${e.message}`);
}
}).catch((e) => log.error(`SDK promise rejected: ${e.message}`));
})();