Remove SelfSupportBackend module.

2 files changed, 0 insertions, 313 deletions

diff --git a/browser/modules/SelfSupportBackend.jsm b/browser/modules/SelfSupportBackend.jsm
deleted file mode 100644
index 27072732e..000000000
--- a/browser/modules/SelfSupportBackend.jsm
+++ /dev/null
@@ -1,312 +0,0 @@
-/* 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/. */
-
-"use strict";
-
-this.EXPORTED_SYMBOLS = ["SelfSupportBackend"];
-
-const Cu = Components.utils;
-const Cc = Components.classes;
-const Ci = Components.interfaces;
-
-Cu.import("resource://gre/modules/Log.jsm");
-Cu.import("resource://gre/modules/Preferences.jsm");
-Cu.import("resource://gre/modules/Services.jsm");
-Cu.import("resource://gre/modules/Timer.jsm");
-Cu.import("resource://gre/modules/XPCOMUtils.jsm");
-
-XPCOMUtils.defineLazyModuleGetter(this, "HiddenFrame",
-  "resource:///modules/HiddenFrame.jsm");
-
-// Enables or disables the Self Support.
-const PREF_ENABLED = "browser.selfsupport.enabled";
-// Url to open in the Self Support browser, in the urlFormatter service format.
-const PREF_URL = "browser.selfsupport.url";
-// Unified Telemetry status.
-const PREF_TELEMETRY_UNIFIED = "toolkit.telemetry.unified";
-
-// Controls the interval at which the self support page tries to reload in case of
-// errors.
-const RETRY_INTERVAL_MS = 30000;
-// Maximum number of SelfSupport page load attempts in case of failure.
-const MAX_RETRIES = 5;
-// The delay after which to load the self-support, at startup.
-const STARTUP_DELAY_MS = 5000;
-
-const LOGGER_NAME = "Browser.SelfSupportBackend";
-const PREF_BRANCH_LOG = "browser.selfsupport.log.";
-const PREF_LOG_LEVEL = PREF_BRANCH_LOG + "level";
-const PREF_LOG_DUMP = PREF_BRANCH_LOG + "dump";
-
-const HTML_NS = "http://www.w3.org/1999/xhtml";
-const XUL_NS = "http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul";
-
-// Whether the FHR/Telemetry unification features are enabled.
-// Changing this pref requires a restart.
-const IS_UNIFIED_TELEMETRY = Preferences.get(PREF_TELEMETRY_UNIFIED, false);
-
-var gLogAppenderDump = null;
-
-this.SelfSupportBackend = Object.freeze({
-  init: function () {
-    SelfSupportBackendInternal.init();
-  },
-
-  uninit: function () {
-    SelfSupportBackendInternal.uninit();
-  },
-});
-
-var SelfSupportBackendInternal = {
-  // The browser element that will load the SelfSupport page.
-  _browser: null,
-  // The Id of the timer triggering delayed SelfSupport page load.
-  _delayedLoadTimerId: null,
-  // The HiddenFrame holding the _browser element.
-  _frame: null,
-  _log: null,
-  _progressListener: null,
-
-  /**
-   * Initializes the self support backend.
-   */
-  init: function () {
-    this._configureLogging();
-
-    this._log.trace("init");
-
-    Preferences.observe(PREF_BRANCH_LOG, this._configureLogging, this);
-
-    // Only allow to use SelfSupport if Unified Telemetry is enabled.
-    let reportingEnabled = IS_UNIFIED_TELEMETRY;
-    if (!reportingEnabled) {
-      this._log.config("init - Disabling SelfSupport because FHR and Unified Telemetry are disabled.");
-      return;
-    }
-
-    this._log.config("init - Disabling SelfSupport because UITour is disabled.");
-    return;
-  },
-
-  /**
-   * Shut down the self support backend, if active.
-   */
-  uninit: function () {
-    this._log.trace("uninit");
-
-    Preferences.ignore(PREF_BRANCH_LOG, this._configureLogging, this);
-
-    // Cancel delayed loading, if still active, when shutting down.
-    clearTimeout(this._delayedLoadTimerId);
-
-    // Dispose of the hidden browser.
-    if (this._browser !== null) {
-      if (this._browser.contentWindow) {
-        this._browser.contentWindow.removeEventListener("DOMWindowClose", this, true);
-      }
-
-      if (this._progressListener) {
-        this._browser.removeProgressListener(this._progressListener);
-        this._progressListener.destroy();
-        this._progressListener = null;
-      }
-
-      this._browser.remove();
-      this._browser = null;
-    }
-
-    if (this._frame) {
-      this._frame.destroy();
-      this._frame = null;
-    }
-  },
-
-  /**
-   * Handle notifications. Once all windows are created, we wait a little bit more
-   * since tabs might still be loading. Then, we open the self support.
-   */
-  observe: function (aSubject, aTopic, aData) {
-    this._log.trace("observe - Topic " + aTopic);
-
-    if (aTopic === "sessionstore-windows-restored") {
-      Services.obs.removeObserver(this, "sessionstore-windows-restored");
-      this._delayedLoadTimerId = setTimeout(this._loadSelfSupport.bind(this), STARTUP_DELAY_MS);
-    }
-  },
-
-  /**
-   * Configure the logger based on the preferences.
-   */
-  _configureLogging: function() {
-    if (!this._log) {
-      this._log = Log.repository.getLogger(LOGGER_NAME);
-
-      // Log messages need to go to the browser console.
-      let consoleAppender = new Log.ConsoleAppender(new Log.BasicFormatter());
-      this._log.addAppender(consoleAppender);
-    }
-
-    // Make sure the logger keeps up with the logging level preference.
-    this._log.level = Log.Level[Preferences.get(PREF_LOG_LEVEL, "Warn")];
-
-    // If enabled in the preferences, add a dump appender.
-    let logDumping = Preferences.get(PREF_LOG_DUMP, false);
-    if (logDumping != !!gLogAppenderDump) {
-      if (logDumping) {
-        gLogAppenderDump = new Log.DumpAppender(new Log.BasicFormatter());
-        this._log.addAppender(gLogAppenderDump);
-      } else {
-        this._log.removeAppender(gLogAppenderDump);
-        gLogAppenderDump = null;
-      }
-    }
-  },
-
-  /**
-   * Create an hidden frame to host our |browser|, then load the SelfSupport page in it.
-   * @param aURL The URL to load in the browser.
-   */
-  _makeHiddenBrowser: function(aURL) {
-    this._frame = new HiddenFrame();
-    return this._frame.get().then(aFrame => {
-      let doc = aFrame.document;
-
-      this._browser = doc.createElementNS(XUL_NS, "browser");
-      this._browser.setAttribute("type", "content");
-      this._browser.setAttribute("disableglobalhistory", "true");
-      this._browser.setAttribute("src", aURL);
-
-      doc.documentElement.appendChild(this._browser);
-    });
-  },
-
-  handleEvent: function(aEvent) {
-    this._log.trace("handleEvent - aEvent.type " + aEvent.type + ", Trusted " + aEvent.isTrusted);
-
-    if (aEvent.type === "DOMWindowClose") {
-      let window = this._browser.contentDocument.defaultView;
-      let target = aEvent.target;
-
-      if (target == window) {
-        // preventDefault stops the default window.close(). We need to do that to prevent
-        // Services.appShell.hiddenDOMWindow from being destroyed.
-        aEvent.preventDefault();
-
-        this.uninit();
-      }
-    }
-  },
-
-  /**
-   * Called when the self support page correctly loads.
-   */
-  _pageSuccessCallback: function() {
-    this._log.debug("_pageSuccessCallback - Page correctly loaded.");
-    this._browser.removeProgressListener(this._progressListener);
-    this._progressListener.destroy();
-    this._progressListener = null;
-
-    // Allow SelfSupportBackend to catch |window.close()| issued by the content.
-    this._browser.contentWindow.addEventListener("DOMWindowClose", this, true);
-  },
-
-  /**
-   * Called when the self support page fails to load.
-   */
-  _pageLoadErrorCallback: function() {
-    this._log.info("_pageLoadErrorCallback - Too many failed load attempts. Giving up.");
-    this.uninit();
-  },
-
-  /**
-   * Create a browser and attach it to an hidden window. The browser will contain the
-   * self support page and attempt to load the page content. If loading fails, try again
-   * after an interval.
-   */
-  _loadSelfSupport: function() {
-    // Fetch the Self Support URL from the preferences.
-    let unformattedURL = Preferences.get(PREF_URL, null);
-    let url = Services.urlFormatter.formatURL(unformattedURL);
-    if (!url.startsWith("https:")) {
-      this._log.error("_loadSelfSupport - Non HTTPS URL provided: " + url);
-      return;
-    }
-
-    this._log.config("_loadSelfSupport - URL " + url);
-
-    // Create the hidden browser.
-    this._makeHiddenBrowser(url).then(() => {
-      // We need to watch for load errors as well and, in case, try to reload
-      // the self support page.
-      const webFlags = Ci.nsIWebProgress.NOTIFY_STATE_WINDOW |
-                       Ci.nsIWebProgress.NOTIFY_STATE_REQUEST |
-                       Ci.nsIWebProgress.NOTIFY_LOCATION;
-
-      this._progressListener = new ProgressListener(() => this._pageLoadErrorCallback(),
-                                                    () => this._pageSuccessCallback());
-
-      this._browser.addProgressListener(this._progressListener, webFlags);
-    });
-  }
-};
-
-/**
- * A progress listener object which notifies of page load error and load success
- * through callbacks. When the page fails to load, the progress listener tries to
- * reload it up to MAX_RETRIES times. The page is not loaded again immediately, but
- * after a timeout.
- *
- * @param aLoadErrorCallback Called when a page failed to load MAX_RETRIES times.
- * @param aLoadSuccessCallback Called when a page correctly loads.
- */
-function ProgressListener(aLoadErrorCallback, aLoadSuccessCallback) {
-  this._loadErrorCallback = aLoadErrorCallback;
-  this._loadSuccessCallback = aLoadSuccessCallback;
-  // The number of page loads attempted.
-  this._loadAttempts = 0;
-  this._log = Log.repository.getLogger(LOGGER_NAME);
-  // The Id of the timer which triggers page load again in case of errors.
-  this._reloadTimerId = null;
-}
-
-ProgressListener.prototype = {
-  onLocationChange: function(aWebProgress, aRequest, aLocation, aFlags) {
-    if (aFlags & Ci.nsIWebProgressListener.LOCATION_CHANGE_ERROR_PAGE) {
-      this._log.warn("onLocationChange - There was a problem fetching the SelfSupport URL (attempt " +
-                     this._loadAttempts + ").");
-
-      // Increase the number of attempts and bail out if we failed too many times.
-      this._loadAttempts++;
-      if (this._loadAttempts > MAX_RETRIES) {
-        this._loadErrorCallback();
-        return;
-      }
-
-      // Reload the page after the retry interval expires. The interval is multiplied
-      // by the number of attempted loads, so that it takes a bit more to try to reload
-      // when frequently failing.
-      this._reloadTimerId = setTimeout(() => {
-        this._log.debug("onLocationChange - Reloading SelfSupport URL in the hidden browser.");
-        aWebProgress.DOMWindow.location.reload();
-      }, RETRY_INTERVAL_MS * this._loadAttempts);
-    }
-  },
-
-  onStateChange: function (aWebProgress, aRequest, aFlags, aStatus) {
-    if (aFlags & Ci.nsIWebProgressListener.STATE_STOP &&
-        aFlags & Ci.nsIWebProgressListener.STATE_IS_NETWORK &&
-        aFlags & Ci.nsIWebProgressListener.STATE_IS_WINDOW &&
-        Components.isSuccessCode(aStatus)) {
-      this._loadSuccessCallback();
-    }
-  },
-
-  destroy: function () {
-    // Make sure we don't try to reload self support when shutting down.
-    clearTimeout(this._reloadTimerId);
-  },
-
-  QueryInterface: XPCOMUtils.generateQI([Ci.nsIWebProgressListener,
-                                         Ci.nsISupportsWeakReference]),
-};
diff --git a/browser/modules/moz.build b/browser/modules/moz.build
index a7bbbc258..684f662d7 100644
--- a/browser/modules/moz.build
+++ b/browser/modules/moz.build
@@ -33,7 +33,6 @@ EXTRA_JS_MODULES += [
     'RecentWindow.jsm',
     'RemotePrompt.jsm',
     'Sanitizer.jsm',
-    'SelfSupportBackend.jsm',
     'SitePermissions.jsm',
     'TransientPrefs.jsm',
     'URLBarZoom.jsm',