diff options
Diffstat (limited to 'ext')
| -rw-r--r-- | ext/js/accessibility/accessibility-controller.js | 17 | ||||
| -rw-r--r-- | ext/js/background/backend.js | 8 | ||||
| -rw-r--r-- | ext/js/background/script-manager.js | 508 |
3 files changed, 122 insertions, 411 deletions
diff --git a/ext/js/accessibility/accessibility-controller.js b/ext/js/accessibility/accessibility-controller.js index 8250b369..2b352948 100644 --- a/ext/js/accessibility/accessibility-controller.js +++ b/ext/js/accessibility/accessibility-controller.js @@ -16,19 +16,14 @@ * along with this program. If not, see <https://www.gnu.org/licenses/>. */ +import {isContentScriptRegistered, registerContentScript, unregisterContentScript} from '../background/script-manager.js'; import {log} from '../core.js'; /** * This class controls the registration of accessibility handlers. */ export class AccessibilityController { - /** - * Creates a new instance. - * @param {import('../background/script-manager.js').ScriptManager} scriptManager An instance of the `ScriptManager` class. - */ - constructor(scriptManager) { - /** @type {import('../background/script-manager.js').ScriptManager} */ - this._scriptManager = scriptManager; + constructor() { /** @type {?import('core').TokenObject} */ this._updateGoogleDocsAccessibilityToken = null; /** @type {?Promise<void>} */ @@ -90,19 +85,17 @@ export class AccessibilityController { const id = 'googleDocsAccessibility'; try { if (forceGoogleDocsHtmlRenderingAny) { - if (await this._scriptManager.isContentScriptRegistered(id)) { return; } + if (await isContentScriptRegistered(id)) { return; } /** @type {import('script-manager').RegistrationDetails} */ const details = { allFrames: true, - matchAboutBlank: true, matches: ['*://docs.google.com/*'], - urlMatches: '^[^:]*://docs\\.google\\.com/[\\w\\W]*$', runAt: 'document_start', js: ['js/accessibility/google-docs.js'] }; - await this._scriptManager.registerContentScript(id, details); + await registerContentScript(id, details); } else { - await this._scriptManager.unregisterContentScript(id); + await unregisterContentScript(id); } } catch (e) { log.error(e); diff --git a/ext/js/background/backend.js b/ext/js/background/backend.js index 5ef3c3be..0604fe8b 100644 --- a/ext/js/background/backend.js +++ b/ext/js/background/backend.js @@ -40,7 +40,7 @@ import {MediaUtil} from '../media/media-util.js'; import {ClipboardReaderProxy, DictionaryDatabaseProxy, OffscreenProxy, TranslatorProxy} from './offscreen-proxy.js'; import {ProfileConditionsUtil} from './profile-conditions-util.js'; import {RequestBuilder} from './request-builder.js'; -import {ScriptManager} from './script-manager.js'; +import {injectStylesheet} from './script-manager.js'; /** * This class controls the core logic of the extension, including API calls @@ -110,10 +110,8 @@ export class Backend { }); /** @type {OptionsUtil} */ this._optionsUtil = new OptionsUtil(); - /** @type {ScriptManager} */ - this._scriptManager = new ScriptManager(); /** @type {AccessibilityController} */ - this._accessibilityController = new AccessibilityController(this._scriptManager); + this._accessibilityController = new AccessibilityController(); /** @type {?number} */ this._searchPopupTabId = null; @@ -650,7 +648,7 @@ export class Backend { async _onApiInjectStylesheet({type, value}, sender) { const {frameId, tab} = sender; if (typeof tab !== 'object' || tab === null || typeof tab.id !== 'number') { throw new Error('Invalid tab'); } - return await this._scriptManager.injectStylesheet(type, value, tab.id, frameId, false); + return await injectStylesheet(type, value, tab.id, frameId, false); } /** @type {import('api').ApiHandler<'getStylesheetContent'>} */ diff --git a/ext/js/background/script-manager.js b/ext/js/background/script-manager.js index 98f67bb0..1142121f 100644 --- a/ext/js/background/script-manager.js +++ b/ext/js/background/script-manager.js @@ -16,419 +16,139 @@ * along with this program. If not, see <https://www.gnu.org/licenses/>. */ -import {isObject} from '../core.js'; - /** - * This class is used to manage script injection into content tabs. + * Injects a stylesheet into a tab. + * @param {'file'|'code'} type The type of content to inject; either 'file' or 'code'. + * @param {string} content The content to inject. + * - If type is `'file'`, this argument should be a path to a file. + * - If type is `'code'`, this argument should be the CSS content. + * @param {number} tabId The id of the tab to inject into. + * @param {number|undefined} frameId The id of the frame to inject into. + * @param {boolean} allFrames Whether or not the stylesheet should be injected into all frames. + * @returns {Promise<void>} */ -export class ScriptManager { - /** - * Creates a new instance of the class. - */ - constructor() { - /** @type {Map<string, ?browser.contentScripts.RegisteredContentScript>} */ - this._contentScriptRegistrations = new Map(); - } - - /** - * Injects a stylesheet into a tab. - * @param {'file'|'code'} type The type of content to inject; either 'file' or 'code'. - * @param {string} content The content to inject. - * If type is 'file', this argument should be a path to a file. - * If type is 'code', this argument should be the CSS content. - * @param {number} tabId The id of the tab to inject into. - * @param {number|undefined} frameId The id of the frame to inject into. - * @param {boolean} allFrames Whether or not the stylesheet should be injected into all frames. - * @returns {Promise<void>} - */ - injectStylesheet(type, content, tabId, frameId, allFrames) { - if (isObject(chrome.scripting) && typeof chrome.scripting.insertCSS === 'function') { - return this._injectStylesheetMV3(type, content, tabId, frameId, allFrames); - } else { - return Promise.reject(new Error('Stylesheet injection not supported')); - } - } - - /** - * Injects a script into a tab. - * @param {string} file The path to a file to inject. - * @param {number} tabId The id of the tab to inject into. - * @param {number|undefined} frameId The id of the frame to inject into. - * @param {boolean} allFrames Whether or not the script should be injected into all frames. - * @returns {Promise<{frameId: number|undefined, result: unknown}>} The id of the frame and the result of the script injection. - */ - injectScript(file, tabId, frameId, allFrames) { - if (isObject(chrome.scripting) && typeof chrome.scripting.executeScript === 'function') { - return this._injectScriptMV3(file, tabId, frameId, allFrames); - } else { - return Promise.reject(new Error('Script injection not supported')); - } - } - - /** - * Checks whether or not a content script is registered. - * @param {string} id The identifier used with a call to `registerContentScript`. - * @returns {Promise<boolean>} `true` if a script is registered, `false` otherwise. - */ - async isContentScriptRegistered(id) { - if (this._contentScriptRegistrations.has(id)) { - return true; - } - if (isObject(chrome.scripting) && typeof chrome.scripting.getRegisteredContentScripts === 'function') { - const scripts = await new Promise((resolve, reject) => { - chrome.scripting.getRegisteredContentScripts({ids: [id]}, (result) => { - const e = chrome.runtime.lastError; - if (e) { - reject(new Error(e.message)); - } else { - resolve(result); - } - }); - }); - for (const script of scripts) { - if (script.id === id) { - return true; - } +export function injectStylesheet(type, content, tabId, frameId, allFrames) { + return new Promise((resolve, reject) => { + /** @type {chrome.scripting.InjectionTarget} */ + const target = { + tabId, + allFrames + }; + /** @type {chrome.scripting.CSSInjection} */ + const details = ( + type === 'file' ? + {origin: 'AUTHOR', files: [content], target} : + {origin: 'USER', css: content, target} + ); + if (!allFrames && typeof frameId === 'number') { + details.target.frameIds = [frameId]; + } + chrome.scripting.insertCSS(details, () => { + const e = chrome.runtime.lastError; + if (e) { + reject(new Error(e.message)); + } else { + resolve(); } - } - return false; - } - - /** - * Registers a dynamic content script. - * Note: if the fallback handler is used and the 'webNavigation' permission isn't granted, - * there is a possibility that the script can be injected more than once due to the events used. - * Therefore, a reentrant check may need to be performed by the content script. - * @param {string} id A unique identifier for the registration. - * @param {import('script-manager').RegistrationDetails} details The script registration details. - * @throws An error is thrown if the id is already in use. - */ - async registerContentScript(id, details) { - if (await this.isContentScriptRegistered(id)) { - throw new Error('Registration already exists'); - } - - if (isObject(chrome.scripting) && typeof chrome.scripting.registerContentScripts === 'function') { - const details2 = this._createContentScriptRegistrationOptionsChrome(details, id); - await /** @type {Promise<void>} */ (new Promise((resolve, reject) => { - chrome.scripting.registerContentScripts([details2], () => { - const e = chrome.runtime.lastError; - if (e) { - reject(new Error(e.message)); - } else { - resolve(); - } - }); - })); - this._contentScriptRegistrations.set(id, null); - return; - } - - // Fallback - this._registerContentScriptFallback(id, details); - } + }); + }); +} - /** - * Unregisters a previously registered content script. - * @param {string} id The identifier passed to a previous call to `registerContentScript`. - * @returns {Promise<boolean>} `true` if the content script was unregistered, `false` otherwise. - */ - async unregisterContentScript(id) { - if (isObject(chrome.scripting) && typeof chrome.scripting.unregisterContentScripts === 'function') { - this._contentScriptRegistrations.delete(id); - try { - await this._unregisterContentScriptMV3(id); - return true; - } catch (e) { - return false; +/** + * Checks whether or not a content script is registered. + * @param {string} id The identifier used with a call to `registerContentScript`. + * @returns {Promise<boolean>} `true` if a script is registered, `false` otherwise. + */ +export async function isContentScriptRegistered(id) { + const scripts = await new Promise((resolve, reject) => { + chrome.scripting.getRegisteredContentScripts({ids: [id]}, (result) => { + const e = chrome.runtime.lastError; + if (e) { + reject(new Error(e.message)); + } else { + resolve(result); } + }); + }); + for (const script of scripts) { + if (script.id === id) { + return true; } - - // Fallback - const registration = this._contentScriptRegistrations.get(id); - if (typeof registration === 'undefined') { return false; } - this._contentScriptRegistrations.delete(id); - if (registration !== null && typeof registration.unregister === 'function') { - await registration.unregister(); - } - return true; } + return false; +} - /** - * Gets the optional permissions required to register a content script. - * @returns {string[]} An array of the required permissions, which may be empty. - */ - getRequiredContentScriptRegistrationPermissions() { - if (isObject(chrome.scripting) && typeof chrome.scripting.registerContentScripts === 'function') { - return []; - } - - // Fallback - return ['webNavigation']; +/** + * Registers a dynamic content script. + * Note: if the fallback handler is used and the 'webNavigation' permission isn't granted, + * there is a possibility that the script can be injected more than once due to the events used. + * Therefore, a reentrant check may need to be performed by the content script. + * @param {string} id A unique identifier for the registration. + * @param {import('script-manager').RegistrationDetails} details The script registration details. + * @throws An error is thrown if the id is already in use. + */ +export async function registerContentScript(id, details) { + if (await isContentScriptRegistered(id)) { + throw new Error('Registration already exists'); } - // Private - - /** - * @param {'file'|'code'} type - * @param {string} content - * @param {number} tabId - * @param {number|undefined} frameId - * @param {boolean} allFrames - * @returns {Promise<void>} - */ - _injectStylesheetMV3(type, content, tabId, frameId, allFrames) { - return new Promise((resolve, reject) => { - /** @type {chrome.scripting.InjectionTarget} */ - const target = { - tabId, - allFrames - }; - /** @type {chrome.scripting.CSSInjection} */ - const details = ( - type === 'file' ? - {origin: 'AUTHOR', files: [content], target} : - {origin: 'USER', css: content, target} - ); - if (!allFrames && typeof frameId === 'number') { - details.target.frameIds = [frameId]; + const details2 = createContentScriptRegistrationOptions(details, id); + await /** @type {Promise<void>} */ (new Promise((resolve, reject) => { + chrome.scripting.registerContentScripts([details2], () => { + const e = chrome.runtime.lastError; + if (e) { + reject(new Error(e.message)); + } else { + resolve(); } - chrome.scripting.insertCSS(details, () => { - const e = chrome.runtime.lastError; - if (e) { - reject(new Error(e.message)); - } else { - resolve(); - } - }); }); - } + })); +} - /** - * @param {string} file - * @param {number} tabId - * @param {number|undefined} frameId - * @param {boolean} allFrames - * @returns {Promise<{frameId: number|undefined, result: unknown}>} The id of the frame and the result of the script injection. - */ - _injectScriptMV3(file, tabId, frameId, allFrames) { - return new Promise((resolve, reject) => { - /** @type {chrome.scripting.ScriptInjection<unknown[], unknown>} */ - const details = { - injectImmediately: true, - files: [file], - target: {tabId, allFrames} - }; - if (!allFrames && typeof frameId === 'number') { - details.target.frameIds = [frameId]; +/** + * Unregisters a previously registered content script. + * @param {string} id The identifier passed to a previous call to `registerContentScript`. + * @returns {Promise<void>} + */ +export async function unregisterContentScript(id) { + return new Promise((resolve, reject) => { + chrome.scripting.unregisterContentScripts({ids: [id]}, () => { + const e = chrome.runtime.lastError; + if (e) { + reject(new Error(e.message)); + } else { + resolve(); } - chrome.scripting.executeScript(details, (results) => { - const e = chrome.runtime.lastError; - if (e) { - reject(new Error(e.message)); - } else { - const {frameId: frameId2, result} = results[0]; - resolve({frameId: frameId2, result}); - } - }); }); - } - - /** - * @param {string} id - * @returns {Promise<void>} - */ - _unregisterContentScriptMV3(id) { - return new Promise((resolve, reject) => { - chrome.scripting.unregisterContentScripts({ids: [id]}, () => { - const e = chrome.runtime.lastError; - if (e) { - reject(new Error(e.message)); - } else { - resolve(); - } - }); - }); - } - - /** - * @param {import('script-manager').RegistrationDetails} details - * @returns {browser.contentScripts.RegisteredContentScriptOptions} - */ - _createContentScriptRegistrationOptionsFirefox(details) { - const {css, js, matchAboutBlank} = details; - /** @type {browser.contentScripts.RegisteredContentScriptOptions} */ - const options = {}; - if (typeof matchAboutBlank !== 'undefined') { - options.matchAboutBlank = matchAboutBlank; - } - if (Array.isArray(css)) { - options.css = css.map((file) => ({file})); - } - if (Array.isArray(js)) { - options.js = js.map((file) => ({file})); - } - this._initializeContentScriptRegistrationOptionsGeneric(details, options); - return options; - } - - /** - * @param {import('script-manager').RegistrationDetails} details - * @param {string} id - * @returns {chrome.scripting.RegisteredContentScript} - */ - _createContentScriptRegistrationOptionsChrome(details, id) { - const {css, js} = details; - /** @type {chrome.scripting.RegisteredContentScript} */ - const options = { - id: id, - persistAcrossSessions: true - }; - if (Array.isArray(css)) { - options.css = [...css]; - } - if (Array.isArray(js)) { - options.js = [...js]; - } - this._initializeContentScriptRegistrationOptionsGeneric(details, options); - return options; - } + }); +} - /** - * @param {import('script-manager').RegistrationDetails} details - * @param {chrome.scripting.RegisteredContentScript|browser.contentScripts.RegisteredContentScriptOptions} options - */ - _initializeContentScriptRegistrationOptionsGeneric(details, options) { - const {allFrames, excludeMatches, matches, runAt} = details; - if (typeof allFrames !== 'undefined') { - options.allFrames = allFrames; - } - if (Array.isArray(excludeMatches)) { - options.excludeMatches = [...excludeMatches]; - } - if (Array.isArray(matches)) { - options.matches = [...matches]; - } - if (typeof runAt !== 'undefined') { - options.runAt = runAt; - } +/** + * @param {import('script-manager').RegistrationDetails} details + * @param {string} id + * @returns {chrome.scripting.RegisteredContentScript} + */ +function createContentScriptRegistrationOptions(details, id) { + const {css, js, allFrames, matches, runAt} = details; + /** @type {chrome.scripting.RegisteredContentScript} */ + const options = { + id: id, + persistAcrossSessions: true + }; + if (Array.isArray(css)) { + options.css = [...css]; } - - /** - * @param {string[]} array - * @param {boolean} firefoxConvention - * @returns {string[]|browser.extensionTypes.ExtensionFileOrCode[]} - */ - _convertFileArray(array, firefoxConvention) { - return firefoxConvention ? array.map((file) => ({file})) : [...array]; + if (Array.isArray(js)) { + options.js = [...js]; } - - /** - * @param {string} id - * @param {import('script-manager').RegistrationDetails} details - */ - _registerContentScriptFallback(id, details) { - const {allFrames, css, js, matchAboutBlank, runAt, urlMatches} = details; - /** @type {import('script-manager').ContentScriptInjectionDetails} */ - const details2 = {allFrames, css, js, matchAboutBlank, runAt, urlRegex: /** @type {?RegExp} */ (null)}; - /** @type {() => Promise<void>} */ - let unregister; - const webNavigationEvent = this._getWebNavigationEvent(runAt); - if (typeof webNavigationEvent === 'object' && webNavigationEvent !== null) { - /** - * @param {chrome.webNavigation.WebNavigationFramedCallbackDetails} details - */ - const onTabCommitted = ({url, tabId, frameId}) => { - this._injectContentScript(true, details2, null, url, tabId, frameId); - }; - const filter = {url: [{urlMatches}]}; - webNavigationEvent.addListener(onTabCommitted, filter); - unregister = async () => webNavigationEvent.removeListener(onTabCommitted); - } else { - /** - * @param {number} tabId - * @param {chrome.tabs.TabChangeInfo} changeInfo - * @param {chrome.tabs.Tab} tab - */ - const onTabUpdated = (tabId, {status}, {url}) => { - if (typeof status === 'string' && typeof url === 'string') { - this._injectContentScript(false, details2, status, url, tabId, void 0); - } - }; - try { - // Firefox - /** @type {browser.tabs.UpdateFilter} */ - const extraParameters = {urls: [urlMatches], properties: ['status']}; - browser.tabs.onUpdated.addListener( - /** @type {(tabId: number, changeInfo: browser.tabs._OnUpdatedChangeInfo, tab: browser.tabs.Tab) => void} */ (onTabUpdated), - extraParameters - ); - } catch (e) { - // Chrome - details2.urlRegex = new RegExp(urlMatches); - chrome.tabs.onUpdated.addListener(onTabUpdated); - } - unregister = async () => chrome.tabs.onUpdated.removeListener(onTabUpdated); - } - this._contentScriptRegistrations.set(id, {unregister}); + if (typeof allFrames !== 'undefined') { + options.allFrames = allFrames; } - - /** - * @param {import('script-manager').RunAt} runAt - * @returns {?(chrome.webNavigation.WebNavigationFramedEvent|chrome.webNavigation.WebNavigationTransitionalEvent)} - */ - _getWebNavigationEvent(runAt) { - const {webNavigation} = chrome; - if (!isObject(webNavigation)) { return null; } - switch (runAt) { - case 'document_start': - return webNavigation.onCommitted; - case 'document_end': - return webNavigation.onDOMContentLoaded; - default: // 'document_idle': - return webNavigation.onCompleted; - } + if (Array.isArray(matches)) { + options.matches = [...matches]; } - - /** - * @param {boolean} isWebNavigation - * @param {import('script-manager').ContentScriptInjectionDetails} details - * @param {?string} status - * @param {string} url - * @param {number} tabId - * @param {number|undefined} frameId - */ - async _injectContentScript(isWebNavigation, details, status, url, tabId, frameId) { - const {urlRegex} = details; - if (urlRegex !== null && !urlRegex.test(url)) { return; } - - let {allFrames, css, js, runAt} = details; - - if (isWebNavigation) { - if (allFrames) { - allFrames = false; - } else { - if (frameId !== 0) { return; } - } - } else { - if (runAt === 'document_start') { - if (status !== 'loading') { return; } - } else { // 'document_end', 'document_idle' - if (status !== 'complete') { return; } - } - } - - const promises = []; - if (Array.isArray(css)) { - for (const file of css) { - promises.push(this.injectStylesheet('file', file, tabId, frameId, allFrames)); - } - } - if (Array.isArray(js)) { - for (const file of js) { - promises.push(this.injectScript(file, tabId, frameId, allFrames)); - } - } - await Promise.all(promises); + if (typeof runAt !== 'undefined') { + options.runAt = runAt; } + return options; } |