530 lines
16 KiB
JavaScript
530 lines
16 KiB
JavaScript
/*
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global dbExec getStyles saveStyle deleteStyle
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global handleCssTransitionBug detectSloppyRegexps
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global openEditor
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global styleViaAPI
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global loadScript
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global usercss styleManager
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*/
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'use strict';
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window.API_METHODS = Object.assign(window.API_METHODS || {}, {
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// getStyles,
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getSectionsByUrl: styleManager.getSectionsByUrl,
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getSectionsById: styleManager.getSectionsById,
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// saveStyle,
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// deleteStyle,
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getStyleFromDB: id =>
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dbExec('get', id).then(event => event.target.result),
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download(msg) {
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delete msg.method;
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return download(msg.url, msg);
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},
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parseCss({code}) {
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return usercss.invokeWorker({action: 'parse', code});
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},
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getPrefs: prefs.getAll,
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healthCheck: () => dbExec().then(() => true),
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detectSloppyRegexps,
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openEditor,
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updateIcon,
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// exposed for stuff that requires followup sendMessage() like popup::openSettings
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// that would fail otherwise if another extension forced the tab to open
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// in the foreground thus auto-closing the popup (in Chrome)
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openURL,
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closeTab: (msg, sender, respond) => {
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chrome.tabs.remove(msg.tabId || sender.tab.id, () => {
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if (chrome.runtime.lastError && msg.tabId !== sender.tab.id) {
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respond(new Error(chrome.runtime.lastError.message));
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}
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});
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return KEEP_CHANNEL_OPEN;
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},
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optionsCustomizeHotkeys() {
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return browser.runtime.openOptionsPage()
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.then(() => new Promise(resolve => setTimeout(resolve, 100)))
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.then(() => sendMessage({method: 'optionsCustomizeHotkeys'}));
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},
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});
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// eslint-disable-next-line no-var
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var browserCommands, contextMenus;
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// *************************************************************************
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// register all listeners
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chrome.runtime.onMessage.addListener(onRuntimeMessage);
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if (FIREFOX) {
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// see notes in apply.js for getStylesFallback
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const MSG_GET_STYLES = 'getStyles:';
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const MSG_GET_STYLES_LEN = MSG_GET_STYLES.length;
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chrome.runtime.onConnect.addListener(port => {
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if (!port.name.startsWith(MSG_GET_STYLES)) return;
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const tabId = port.sender.tab.id;
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const frameId = port.sender.frameId;
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const options = tryJSONparse(port.name.slice(MSG_GET_STYLES_LEN));
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port.disconnect();
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getStyles(options).then(styles => {
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if (!styles.length) return;
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chrome.tabs.executeScript(tabId, {
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code: `
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applyOnMessage({
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method: 'styleApply',
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styles: ${JSON.stringify(styles)},
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})
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`,
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runAt: 'document_start',
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frameId,
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});
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});
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});
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}
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{
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const listener =
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URLS.chromeProtectsNTP
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? webNavigationListenerChrome
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: webNavigationListener;
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chrome.webNavigation.onBeforeNavigate.addListener(data =>
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listener(null, data));
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chrome.webNavigation.onCommitted.addListener(data =>
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listener('styleApply', data));
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chrome.webNavigation.onHistoryStateUpdated.addListener(data =>
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listener('styleReplaceAll', data));
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chrome.webNavigation.onReferenceFragmentUpdated.addListener(data =>
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listener('styleReplaceAll', data));
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if (FIREFOX) {
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// FF applies page CSP even to content scripts, https://bugzil.la/1267027
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chrome.webNavigation.onCommitted.addListener(webNavUsercssInstallerFF, {
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url: [
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{hostSuffix: '.githubusercontent.com', urlSuffix: '.user.css'},
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{hostSuffix: '.githubusercontent.com', urlSuffix: '.user.styl'},
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]
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});
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// FF misses some about:blank iframes so we inject our content script explicitly
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chrome.webNavigation.onDOMContentLoaded.addListener(webNavIframeHelperFF, {
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url: [
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{urlEquals: 'about:blank'},
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]
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});
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}
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}
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if (chrome.contextMenus) {
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chrome.contextMenus.onClicked.addListener((info, tab) =>
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contextMenus[info.menuItemId].click(info, tab));
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}
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if (chrome.commands) {
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// Not available in Firefox - https://bugzilla.mozilla.org/show_bug.cgi?id=1240350
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chrome.commands.onCommand.addListener(command => browserCommands[command]());
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}
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if (!chrome.browserAction ||
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!['setIcon', 'setBadgeBackgroundColor', 'setBadgeText'].every(name => chrome.browserAction[name])) {
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window.updateIcon = () => {};
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}
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const tabIcons = new Map();
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chrome.tabs.onRemoved.addListener(tabId => tabIcons.delete(tabId));
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chrome.tabs.onReplaced.addListener((added, removed) => tabIcons.delete(removed));
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// *************************************************************************
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// set the default icon displayed after a tab is created until webNavigation kicks in
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prefs.subscribe(['iconset'], () =>
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updateIcon({
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tab: {id: undefined},
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styles: {},
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}));
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// *************************************************************************
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chrome.runtime.onInstalled.addListener(({reason}) => {
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if (reason !== 'update') return;
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// translations may change
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localStorage.L10N = JSON.stringify({
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browserUIlanguage: chrome.i18n.getUILanguage(),
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});
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// themes may change
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delete localStorage.codeMirrorThemes;
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});
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// *************************************************************************
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// browser commands
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browserCommands = {
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openManage() {
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openURL({url: 'manage.html'});
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},
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styleDisableAll(info) {
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prefs.set('disableAll', info ? info.checked : !prefs.get('disableAll'));
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},
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};
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// *************************************************************************
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// context menus
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contextMenus = {
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'show-badge': {
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title: 'menuShowBadge',
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click: info => prefs.set(info.menuItemId, info.checked),
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},
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'disableAll': {
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title: 'disableAllStyles',
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click: browserCommands.styleDisableAll,
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},
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'open-manager': {
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title: 'openStylesManager',
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click: browserCommands.openManage,
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},
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'editor.contextDelete': {
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presentIf: () => !FIREFOX && prefs.get('editor.contextDelete'),
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title: 'editDeleteText',
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type: 'normal',
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contexts: ['editable'],
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documentUrlPatterns: [URLS.ownOrigin + 'edit*'],
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click: (info, tab) => {
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sendMessage({tabId: tab.id, method: 'editDeleteText'});
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},
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}
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};
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if (chrome.contextMenus) {
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const createContextMenus = ids => {
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for (const id of ids) {
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let item = contextMenus[id];
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if (item.presentIf && !item.presentIf()) {
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continue;
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}
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item = Object.assign({id}, item);
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delete item.presentIf;
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const prefValue = prefs.readOnlyValues[id];
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item.title = chrome.i18n.getMessage(item.title);
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if (!item.type && typeof prefValue === 'boolean') {
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item.type = 'checkbox';
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item.checked = prefValue;
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}
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if (!item.contexts) {
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item.contexts = ['browser_action'];
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}
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delete item.click;
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chrome.contextMenus.create(item, ignoreChromeError);
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}
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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 >= 3172 && CHROME <= 3288 ?
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(id => chrome.contextMenus.remove(id, () => createContextMenus([id]) + ignoreChromeError())) :
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((id, checked) => chrome.contextMenus.update(id, {checked}, ignoreChromeError));
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const togglePresence = (id, checked) => {
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if (checked) {
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createContextMenus([id]);
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} else {
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chrome.contextMenus.remove(id, ignoreChromeError);
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}
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};
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const keys = Object.keys(contextMenus);
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prefs.subscribe(keys.filter(id => typeof prefs.readOnlyValues[id] === 'boolean'), toggleCheckmark);
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prefs.subscribe(keys.filter(id => contextMenus[id].presentIf), togglePresence);
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createContextMenus(keys);
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}
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// *************************************************************************
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// [re]inject content scripts
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window.addEventListener('storageReady', function _() {
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window.removeEventListener('storageReady', _);
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updateIcon({
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tab: {id: undefined},
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styles: {},
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});
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// Firefox injects content script automatically
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if (FIREFOX) return;
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const NTP = 'chrome://newtab/';
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const ALL_URLS = '<all_urls>';
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const contentScripts = chrome.runtime.getManifest().content_scripts;
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// expand * as .*?
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const wildcardAsRegExp = (s, flags) => new RegExp(
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s.replace(/[{}()[\]/\\.+?^$:=!|]/g, '\\$&')
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.replace(/\*/g, '.*?'), flags);
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for (const cs of contentScripts) {
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cs.matches = cs.matches.map(m => (
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m === ALL_URLS ? m : wildcardAsRegExp(m)
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));
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}
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const injectCS = (cs, tabId) => {
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ignoreChromeError();
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chrome.tabs.executeScript(tabId, {
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file: cs.js[0],
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runAt: cs.run_at,
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allFrames: cs.all_frames,
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matchAboutBlank: cs.match_about_blank,
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}, ignoreChromeError);
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};
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const pingCS = (cs, {id, url}) => {
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const maybeInject = pong => !pong && injectCS(cs, id);
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cs.matches.some(match => {
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if ((match === ALL_URLS || url.match(match)) &&
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(!url.startsWith('chrome') || url === NTP)) {
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sendMessage({method: 'ping', tabId: id}, maybeInject);
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return true;
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}
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});
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};
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queryTabs().then(tabs =>
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tabs.forEach(tab => {
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// skip lazy-loaded aka unloaded tabs that seem to start loading on message in FF
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if (tab.width) {
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contentScripts.forEach(cs =>
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setTimeout(pingCS, 0, cs, tab));
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}
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}));
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});
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// *************************************************************************
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{
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const getStylesForFrame = (msg, sender) => {
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const stylesTask = getStyles(msg);
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if (!sender || !sender.frameId) return stylesTask;
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return Promise.all([
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stylesTask,
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getTab(sender.tab.id),
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]).then(([styles, tab]) => {
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if (tab) styles.exposeIframes = tab.url.replace(/(\/\/[^/]*).*/, '$1');
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return styles;
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});
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};
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const updateAPI = (_, enabled) => {
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window.API_METHODS.getStylesForFrame = enabled ? getStylesForFrame : getStyles;
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};
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prefs.subscribe(['exposeIframes'], updateAPI);
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updateAPI(null, prefs.readOnlyValues.exposeIframes);
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}
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// *************************************************************************
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function webNavigationListener(method, {url, tabId, frameId}) {
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Promise.all([
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getStyles({matchUrl: url, asHash: true}),
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frameId && prefs.readOnlyValues.exposeIframes && getTab(tabId),
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]).then(([styles, tab]) => {
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if (method && URLS.supported(url) && tabId >= 0) {
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if (method === 'styleApply') {
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handleCssTransitionBug({tabId, frameId, url, styles});
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}
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if (tab) styles.exposeIframes = tab.url.replace(/(\/\/[^/]*).*/, '$1');
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sendMessage({
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tabId,
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frameId,
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method,
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// ping own page so it retrieves the styles directly
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styles: url.startsWith(URLS.ownOrigin) ? 'DIY' : styles,
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});
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}
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// main page frame id is 0
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if (frameId === 0) {
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tabIcons.delete(tabId);
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updateIcon({tab: {id: tabId, url}, styles});
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}
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});
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}
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function webNavigationListenerChrome(method, data) {
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// Chrome 61.0.3161+ doesn't run content scripts on NTP
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if (
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!data.url.startsWith('https://www.google.') ||
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!data.url.includes('/_/chrome/newtab?')
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) {
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webNavigationListener(method, data);
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return;
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}
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getTab(data.tabId).then(tab => {
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if (tab.url === 'chrome://newtab/') {
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data.url = tab.url;
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}
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webNavigationListener(method, data);
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});
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}
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function webNavUsercssInstallerFF(data) {
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const {tabId} = data;
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Promise.all([
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sendMessage({tabId, method: 'ping'}),
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// we need tab index to open the installer next to the original one
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// and also to skip the double-invocation in FF which assigns tab url later
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getTab(tabId),
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]).then(([pong, tab]) => {
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if (pong !== true && tab.url !== 'about:blank') {
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window.API_METHODS.installUsercss({direct: true}, {tab});
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}
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});
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}
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function webNavIframeHelperFF({tabId, frameId}) {
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if (!frameId) return;
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sendMessage({method: 'ping', tabId, frameId}, pong => {
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ignoreChromeError();
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if (pong) return;
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chrome.tabs.executeScript(tabId, {
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frameId,
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file: '/content/apply.js',
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matchAboutBlank: true,
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}, ignoreChromeError);
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});
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}
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function updateIcon({tab, styles}) {
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if (tab.id < 0) {
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return;
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}
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if (URLS.chromeProtectsNTP && tab.url === 'chrome://newtab/') {
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styles = {};
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}
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if (styles) {
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stylesReceived(styles);
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return;
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}
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getTabRealURL(tab)
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.then(url => getStyles({matchUrl: url, asHash: true, omitCode: true}))
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.then(stylesReceived);
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function getLength(styles) {
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const keys = Object.keys(styles || {});
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// Using "included" because styles may not include the psuedo-section added by the
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// filterStylesInternal function
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return String(keys.filter(key => styles[key][0] ? styles[key][0].included : false).length);
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}
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function stylesReceived(styles) {
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const disableAll = 'disableAll' in styles ? styles.disableAll : prefs.get('disableAll');
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const postfix = disableAll ? 'x' : !styles.length ? 'w' : '';
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const color = prefs.get(disableAll ? 'badgeDisabled' : 'badgeNormal');
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const text = prefs.get('show-badge') && styles.length ? getLength(styles) : '';
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const iconset = ['', 'light/'][prefs.get('iconset')] || '';
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let tabIcon = tabIcons.get(tab.id);
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if (!tabIcon) tabIcons.set(tab.id, (tabIcon = {}));
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if (tabIcon.iconType !== iconset + postfix) {
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tabIcon.iconType = iconset + postfix;
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const sizes = FIREFOX || CHROME >= 2883 && !VIVALDI ? [16, 32] : [19, 38];
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const usePath = tabIcons.get('usePath');
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Promise.all(sizes.map(size => {
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const src = `/images/icon/${iconset}${size}${postfix}.png`;
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return usePath ? src : tabIcons.get(src) || loadIcon(src);
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})).then(data => {
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const imageKey = typeof data[0] === 'string' ? 'path' : 'imageData';
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const imageData = {};
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sizes.forEach((size, i) => (imageData[size] = data[i]));
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chrome.browserAction.setIcon({
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tabId: tab.id,
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[imageKey]: imageData,
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}, ignoreChromeError);
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});
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}
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if (tab.id === undefined) return;
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let defaultIcon = tabIcons.get(undefined);
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if (!defaultIcon) tabIcons.set(undefined, (defaultIcon = {}));
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if (defaultIcon.color !== color) {
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defaultIcon.color = color;
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chrome.browserAction.setBadgeBackgroundColor({color});
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}
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if (tabIcon.text === text) return;
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tabIcon.text = text;
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try {
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// Chrome supports the callback since 67.0.3381.0, see https://crbug.com/451320
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chrome.browserAction.setBadgeText({text, tabId: tab.id}, ignoreChromeError);
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} catch (e) {
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setTimeout(() => {
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getTab(tab.id).then(realTab => {
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// skip pre-rendered tabs
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if (realTab.index >= 0) {
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chrome.browserAction.setBadgeText({text, tabId: tab.id});
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}
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});
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});
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}
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}
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function loadIcon(src, resolve) {
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if (!resolve) return new Promise(resolve => loadIcon(src, resolve));
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const canvas = document.createElement('canvas');
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const ctx = canvas.getContext('2d');
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const img = new Image();
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img.src = src;
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img.onload = () => {
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const w = canvas.width = img.width;
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const h = canvas.height = img.height;
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ctx.clearRect(0, 0, w, h);
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ctx.drawImage(img, 0, 0, w, h);
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const data = ctx.getImageData(0, 0, w, h);
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// Firefox breaks Canvas when privacy.resistFingerprinting=true, https://bugzil.la/1412961
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let usePath = tabIcons.get('usePath');
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if (usePath === undefined) {
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usePath = data.data.every(b => b === 255);
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tabIcons.set('usePath', usePath);
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}
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if (usePath) {
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resolve(src);
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return;
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}
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tabIcons.set(src, data);
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resolve(data);
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};
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}
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}
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function onRuntimeMessage(msg, sender, sendResponse) {
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if (msg.method !== 'invokeAPI') {
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// FIXME: switch everything to api.js then throw an error when msg.method is unknown.
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return;
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}
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invoke()
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.catch(err =>
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// wrap 'Error' object instance as {__ERROR__: message},
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// which will be unwrapped by api.js,
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({
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__ERROR__: err.message || String(err)
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})
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)
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// prevent exceptions on sending to a closed tab
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.then(output => tryCatch(sendResponse, output));
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// keep channel open
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return true;
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function invoke() {
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try {
|
|
const fn = window.API_METHODS[msg.name];
|
|
if (!fn) {
|
|
throw new Error(`unknown API: ${msg.name}`);
|
|
}
|
|
const context = {msg, sender};
|
|
return Promise.resolve(fn.apply(context, msg.args));
|
|
} catch (err) {
|
|
return Promise.reject(err);
|
|
}
|
|
}
|
|
}
|