save prefs in bg to avoid data loss
* add `now` to simplify usage of prefs.subscribe * tweak/simplify bits by separating bg/content concerns
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tophf
parent
be47cfc471
commit
b56dacb6b2
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@ -59,7 +59,8 @@ window.API_METHODS = Object.assign(window.API_METHODS || {}, {
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parseCss({code}) {
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return backgroundWorker.parseMozFormat({code});
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},
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getPrefs: prefs.getAll,
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getPrefs: () => prefs.values, // will be deepCopy'd by invokeAPI handler
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setPref: (key, value) => prefs.set(key, value),
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openEditor,
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@ -218,6 +219,14 @@ function createContextMenus(ids) {
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}
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if (chrome.contextMenus) {
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// "Delete" item in context menu for browsers that don't have it
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if (CHROME &&
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// looking at the end of UA string
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/(Vivaldi|Safari)\/[\d.]+$/.test(navigator.userAgent) &&
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// skip forks with Flash as those are likely to have the menu e.g. CentBrowser
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!Array.from(navigator.plugins).some(p => p.name === 'Shockwave Flash')) {
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prefs.defaults['editor.contextDelete'] = true;
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}
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// circumvent the bug with disabling check marks in Chrome 62-64
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const toggleCheckmark = CHROME >= 62 && CHROME <= 64 ?
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(id => chrome.contextMenus.remove(id, () => createContextMenus([id]) + ignoreChromeError())) :
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@ -233,7 +242,7 @@ if (chrome.contextMenus) {
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const keys = Object.keys(contextMenus);
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prefs.subscribe(keys.filter(id => typeof prefs.defaults[id] === 'boolean'), toggleCheckmark);
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prefs.subscribe(keys.filter(id => contextMenus[id].presentIf), togglePresence);
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prefs.subscribe(keys.filter(id => contextMenus[id].presentIf && id in prefs.defaults), togglePresence);
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createContextMenus(keys);
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}
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292
js/prefs.js
292
js/prefs.js
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@ -1,9 +1,11 @@
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/* global promisifyChrome msg API */
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/* global deepCopy deepEqual debounce */ // not used in content scripts
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'use strict';
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// Needs msg.js loaded first
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self.prefs = self.INJECTED === 1 ? self.prefs : (() => {
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// eslint-disable-next-line no-unused-expressions
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window.INJECTED !== 1 && (() => {
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const STORAGE_KEY = 'settings';
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const clone = msg.isBg ? deepCopy : (val => JSON.parse(JSON.stringify(val)));
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const defaults = {
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'openEditInWindow': false, // new editor opens in a own browser window
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'openEditInWindow.popup': false, // new editor opens in a simplified browser window without omnibox
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@ -72,7 +74,8 @@ self.prefs = self.INJECTED === 1 ? self.prefs : (() => {
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// '' (empty string) = disabled
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'editor.autoCloseBrackets': true, // auto-add a closing pair when typing an opening one of ()[]{}''""
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'editor.autocompleteOnTyping': false, // show autocomplete dropdown on typing a word token
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'editor.contextDelete': contextDeleteMissing(), // "Delete" item in context menu
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// "Delete" item in context menu for browsers that don't have it
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'editor.contextDelete': null,
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'editor.selectByTokens': true,
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'editor.appliesToLineWidget': true, // show applies-to line widget on the editor
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@ -105,189 +108,126 @@ self.prefs = self.INJECTED === 1 ? self.prefs : (() => {
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'updateInterval': 24, // user-style automatic update interval, hours (0 = disable)
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};
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const values = deepCopy(defaults);
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const values = clone(defaults);
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const onChange = {
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any: new Set(),
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specific: new Map(),
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specific: {},
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};
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promisifyChrome({
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'storage.sync': ['get', 'set'],
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});
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const initializing = (
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msg.isBg
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? browser.storage.sync.get('settings').then(res => res.settings)
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: API.getPrefs()
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).then(res => res && setAll(res, true));
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chrome.storage.onChanged.addListener((changes, area) => {
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if (area !== 'sync' || !changes.settings || !changes.settings.newValue) {
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return;
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}
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initializing.then(() => setAll(changes.settings.newValue, true));
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});
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let timer;
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// coalesce multiple pref changes in broadcast
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// let changes = {};
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return {
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initializing,
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defaults,
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get(key, defaultValue) {
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if (key in values) {
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return values[key];
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}
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if (defaultValue !== undefined) {
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return defaultValue;
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}
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if (key in defaults) {
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return defaults[key];
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}
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console.warn("No default preference for '%s'", key);
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},
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getAll() {
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return deepCopy(values);
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},
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set,
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reset: key => set(key, deepCopy(defaults[key])),
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subscribe(keys, listener) {
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// keys: string[] ids
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// or a falsy value to subscribe to everything
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// listener: function (key, value)
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if (keys) {
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for (const key of keys) {
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const existing = onChange.specific.get(key);
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if (!existing) {
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onChange.specific.set(key, listener);
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} else if (existing instanceof Set) {
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existing.add(listener);
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} else {
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onChange.specific.set(key, new Set([existing, listener]));
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}
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}
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} else {
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onChange.any.add(listener);
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}
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},
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unsubscribe(keys, listener) {
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if (keys) {
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for (const key of keys) {
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const existing = onChange.specific.get(key);
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if (existing instanceof Set) {
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existing.delete(listener);
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if (!existing.size) {
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onChange.specific.delete(key);
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}
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} else if (existing) {
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onChange.specific.delete(key);
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}
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}
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} else {
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onChange.all.remove(listener);
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}
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},
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};
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function setAll(settings, synced) {
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for (const [key, value] of Object.entries(settings)) {
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set(key, value, synced);
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}
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}
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function set(key, value, synced = false) {
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const oldValue = values[key];
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switch (typeof defaults[key]) {
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case typeof value:
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break;
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case 'string':
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value = String(value);
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break;
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case 'number':
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value |= 0;
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break;
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case 'boolean':
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value = value === true || value === 'true';
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break;
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}
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if (equal(value, oldValue)) {
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return;
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}
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values[key] = value;
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emitChange(key, value);
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if (!synced && !timer) {
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timer = syncPrefsLater();
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}
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return timer;
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}
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function emitChange(key, value) {
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const specific = onChange.specific.get(key);
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if (typeof specific === 'function') {
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specific(key, value);
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} else if (specific instanceof Set) {
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for (const listener of specific.values()) {
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listener(key, value);
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}
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}
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for (const listener of onChange.any.values()) {
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listener(key, value);
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}
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}
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function syncPrefsLater() {
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return new Promise((resolve, reject) => {
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setTimeout(() => {
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timer = null;
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browser.storage.sync.set({settings: values})
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.then(resolve, reject);
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});
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if (msg.isBg) {
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promisifyChrome({
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'storage.sync': ['get', 'set'],
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});
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}
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const initializing = (
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msg.isBg
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? browser.storage.sync.get(STORAGE_KEY).then(res => res[STORAGE_KEY])
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: API.getPrefs()
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).then(setAll);
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function equal(a, b) {
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if (!a || !b || typeof a !== 'object' || typeof b !== 'object') {
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return a === b;
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chrome.storage.onChanged.addListener(async (changes, area) => {
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const data = area === 'sync' && changes[STORAGE_KEY];
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if (data) {
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await initializing;
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setAll(data.newValue);
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}
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if (Object.keys(a).length !== Object.keys(b).length) {
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return false;
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}
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for (const k in a) {
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if (typeof a[k] === 'object') {
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if (!equal(a[k], b[k])) {
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return false;
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});
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// This direct assignment allows IDEs to provide correct autocomplete for methods
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const prefs = window.prefs = {
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initializing,
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defaults,
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values,
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get(key) {
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return isKnown(key) && values[key];
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},
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set(key, value, isSynced) {
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if (!isKnown(key)) return;
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const oldValue = values[key];
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const type = typeof defaults[key];
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if (type !== typeof value) {
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if (type === 'string') value = String(value);
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if (type === 'number') value = Number(value) || 0;
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if (type === 'boolean') value = Boolean(value);
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}
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if (value !== oldValue && !deepEqual(value, oldValue)) {
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values[key] = value;
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emitChange(key, value, isSynced);
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}
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},
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reset(key) {
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prefs.set(key, clone(defaults[key]));
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},
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/**
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* @param {?string|string[]} keys - pref ids or a falsy value to subscribe to everything
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* @param {function(key:string, value:any)} fn
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* @param {Object} [opts]
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* @param {boolean} [opts.now] - when truthy, the listener is called immediately:
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* 1) if `keys` is an array of keys, each `key` will be fired separately with a real `value`
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* 2) if `keys` is falsy, no key/value will be provided
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*/
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subscribe(keys, fn, {now} = {}) {
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if (keys) {
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for (const key of Array.isArray(keys) ? keys : [keys]) {
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if (!isKnown(key)) continue;
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const listeners = onChange.specific[key] ||
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(onChange.specific[key] = new Set());
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listeners.add(fn);
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if (now) fn(key, values[key]);
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}
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} else if (a[k] !== b[k]) {
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return false;
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} else {
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onChange.any.add(fn);
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if (now) fn();
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}
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},
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unsubscribe(keys, fn) {
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if (keys) {
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for (const key of keys) {
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const listeners = onChange.specific[key];
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if (listeners) {
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listeners.delete(fn);
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if (!listeners.size) {
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delete onChange.specific[key];
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}
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}
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}
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} else {
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onChange.all.remove(fn);
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}
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},
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};
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function isKnown(key) {
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const res = defaults.hasOwnProperty(key);
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if (!res) console.warn('Unknown preference "%s"', key);
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return res;
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}
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function setAll(settings) {
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for (const [key, value] of Object.entries(settings || {})) {
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prefs.set(key, value, true);
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}
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}
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function emitChange(key, value, isSynced) {
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for (const fn of onChange.specific[key] || []) {
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fn(key, value);
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}
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for (const fn of onChange.any) {
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fn(key, value);
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}
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if (!isSynced) {
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/* browser.storage is slow and can randomly lose values if the tab was closed immediately
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so we're sending the value to the background script which will save it to the storage;
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the extra bonus is that invokeAPI is immediate in extension tabs */
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if (msg.isBg) {
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debounce(updateStorage);
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} else {
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API.setPref(key, value);
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}
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}
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return true;
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}
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function contextDeleteMissing() {
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return /Chrome\/\d+/.test(navigator.userAgent) && (
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// detect browsers without Delete by looking at the end of UA string
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/Vivaldi\/[\d.]+$/.test(navigator.userAgent) ||
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// Chrome and co.
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/Safari\/[\d.]+$/.test(navigator.userAgent) &&
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// skip forks with Flash as those are likely to have the menu e.g. CentBrowser
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!Array.from(navigator.plugins).some(p => p.name === 'Shockwave Flash')
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);
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}
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function deepCopy(obj) {
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if (!obj || typeof obj !== 'object') {
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return obj;
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}
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if (Array.isArray(obj)) {
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return obj.map(deepCopy);
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}
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return Object.keys(obj).reduce((output, key) => {
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output[key] = deepCopy(obj[key]);
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return output;
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}, {});
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function updateStorage() {
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return browser.storage.sync.set({[STORAGE_KEY]: values});
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}
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})();
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