From 6bf0a5cb5034a7e684dcc3500e841785237ce2dd Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 19:32:43 +0200 Subject: Adding upstream version 1:115.7.0. Signed-off-by: Daniel Baumann --- .../components/urlbar/private/BaseFeature.sys.mjs | 168 +++++++++++++++++++++ 1 file changed, 168 insertions(+) create mode 100644 browser/components/urlbar/private/BaseFeature.sys.mjs (limited to 'browser/components/urlbar/private/BaseFeature.sys.mjs') diff --git a/browser/components/urlbar/private/BaseFeature.sys.mjs b/browser/components/urlbar/private/BaseFeature.sys.mjs new file mode 100644 index 0000000000..4893ffdf1c --- /dev/null +++ b/browser/components/urlbar/private/BaseFeature.sys.mjs @@ -0,0 +1,168 @@ +/* This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ + +const lazy = {}; + +ChromeUtils.defineESModuleGetters(lazy, { + UrlbarPrefs: "resource:///modules/UrlbarPrefs.sys.mjs", + UrlbarUtils: "resource:///modules/UrlbarUtils.sys.mjs", +}); + +/** + * Base class for quick suggest features. It can be extended to implement a + * feature that is part of the larger quick suggest feature and that should be + * enabled only when quick suggest is enabled. + * + * You can extend this class as an alternative to implementing your feature + * directly in `QuickSuggest`. Doing so has the following advantages: + * + * - If your feature is gated on a Nimbus variable or preference, `QuickSuggest` + * will manage its lifetime automatically. This is really only useful if the + * feature has state that must be initialized when the feature is enabled and + * uninitialized when it's disabled. + * + * - Encapsulation. You can keep all the code related to your feature in one + * place, without mixing it with unrelated code and cluttering up + * `QuickSuggest`. You can also test it in isolation from `QuickSuggest`. + * + * - Remote settings management. You can register your feature with + * `QuickSuggestRemoteSettings` and it will be called at appropriate times to + * sync from remote settings. + * + * - If your feature also serves suggestions from remote settings, you can + * implement one method, `queryRemoteSettings()`, to hook into + * `UrlbarProviderQuickSuggest`. + * + * - Your feature will automatically get its own logger. + * + * To register your subclass with `QuickSuggest`, add it to the `FEATURES` const + * in QuickSuggest.sys.mjs. + */ +export class BaseFeature { + /** + * {boolean} + * Whether the feature should be enabled. Typically the subclass will check + * the values of one or more Nimbus variables or preferences. `QuickSuggest` + * will access this getter only when the quick suggest feature as a whole is + * enabled. Otherwise the subclass feature will be disabled automatically. + */ + get shouldEnable() { + throw new Error("`shouldEnable` must be overridden"); + } + + /** + * @returns {Array} + * If the subclass's `shouldEnable` implementation depends on preferences + * instead of Nimbus variables, the subclass should override this getter and + * return their names in this array so that `enable()` can be called when + * they change. Names should be in the same format that `UrlbarPrefs.get()` + * expects. + */ + get enablingPreferences() { + return null; + } + + /** + * This method should initialize or uninitialize any state related to the + * feature. + * + * @param {boolean} enabled + * Whether the feature should be enabled or not. + */ + enable(enabled) {} + + /** + * If the feature manages suggestions from remote settings that should be + * returned by UrlbarProviderQuickSuggest, the subclass should override this + * method. It should return remote settings suggestions matching the given + * search string. + * + * @param {string} searchString + * The search string. + * @returns {Array} + * An array of matching suggestions, or null if not implemented. + */ + async queryRemoteSettings(searchString) { + return null; + } + + /** + * If the feature manages data in remote settings, the subclass should + * override this method. It should fetch the data and build whatever data + * structures are necessary to support the feature. + * + * @param {RemoteSettings} rs + * The `RemoteSettings` client object. + */ + async onRemoteSettingsSync(rs) {} + + /** + * If the feature corresponds to a type of suggestion, the subclass should + * override this method. It should return a new `UrlbarResult` for a given + * suggestion, which can come from either remote settings or Merino. + * + * @param {UrlbarQueryContext} queryContext + * The query context. + * @param {object} suggestion + * The suggestion from either remote settings or Merino. + * @param {string} searchString + * The search string that was used to fetch the suggestion. It may be + * different from `queryContext.searchString` due to trimming, lower-casing, + * etc. This is included as a param in case it's useful. + * @returns {UrlbarResult} + * A new result for the suggestion. + */ + async makeResult(queryContext, suggestion, searchString) { + return null; + } + + // Methods not designed for overriding below + + /** + * @returns {Logger} + * The feature's logger. + */ + get logger() { + if (!this._logger) { + this._logger = lazy.UrlbarUtils.getLogger({ + prefix: `QuickSuggest.${this.name}`, + }); + } + return this._logger; + } + + /** + * @returns {boolean} + * Whether the feature is enabled. The enabled status is automatically + * managed by `QuickSuggest` and subclasses should not override this. + */ + get isEnabled() { + return this.#isEnabled; + } + + /** + * @returns {string} + * The feature's name. + */ + get name() { + return this.constructor.name; + } + + /** + * Enables or disables the feature according to `shouldEnable` and whether + * quick suggest is enabled. If the feature is already enabled appropriately, + * does nothing. + */ + update() { + let enable = + lazy.UrlbarPrefs.get("quickSuggestEnabled") && this.shouldEnable; + if (enable != this.isEnabled) { + this.logger.info(`Setting enabled = ${enable}`); + this.enable(enable); + this.#isEnabled = enable; + } + } + + #isEnabled = false; +} -- cgit v1.2.3