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authorMatt A. Tobin <email@mattatobin.com>2018-02-03 06:25:10 -0500
committerMatt A. Tobin <email@mattatobin.com>2018-02-03 06:25:10 -0500
commit8b8c65072aedef94610748ce92c2ed3a19fd5517 (patch)
tree8614d386acf5db7a77b08d19a5854a7d75dab015 /b2g/components/SafeMode.jsm
parent8c3a46bd13a0660a3ff1e0379dbf515873a852d2 (diff)
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Purge b2g/
Diffstat (limited to 'b2g/components/SafeMode.jsm')
-rw-r--r--b2g/components/SafeMode.jsm150
1 files changed, 0 insertions, 150 deletions
diff --git a/b2g/components/SafeMode.jsm b/b2g/components/SafeMode.jsm
deleted file mode 100644
index 9f9342f67..000000000
--- a/b2g/components/SafeMode.jsm
+++ /dev/null
@@ -1,150 +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 = ["SafeMode"];
-
-const Cu = Components.utils;
-
-Cu.import("resource://gre/modules/Services.jsm");
-Cu.import("resource://gre/modules/AppConstants.jsm");
-
-const kSafeModePref = "b2g.safe_mode";
-const kSafeModePage = "safe_mode.html";
-
-function debug(aStr) {
- //dump("-*- SafeMode: " + aStr + "\n");
-}
-
-// This module is responsible for checking whether we want to start in safe
-// mode or not. The flow is as follow:
-// - wait for the `b2g.safe_mode` preference to be set to something different
-// than `unset` by nsAppShell
-// - If it's set to `no`, just start normally.
-// - If it's set to `yes`, we load a stripped down system app from safe_mode.html"
-// - This page is responsible to dispatch a mozContentEvent to us.
-// - If the user choose SafeMode, we disable all add-ons.
-// - We go on with startup.
-
-this.SafeMode = {
- // Returns a promise that resolves when nsAppShell has set the
- // b2g.safe_mode_state_ready preference to `true`.
- _waitForPref: function() {
- debug("waitForPref");
- try {
- let currentMode = Services.prefs.getCharPref(kSafeModePref);
- debug("current mode: " + currentMode);
- if (currentMode !== "unset") {
- return Promise.resolve();
- }
- } catch(e) { debug("No current mode available!"); }
-
- // Wait for the preference to toggle.
- return new Promise((aResolve, aReject) => {
- let observer = function(aSubject, aTopic, aData) {
- if (Services.prefs.getCharPref(kSafeModePref)) {
- Services.prefs.removeObserver(kSafeModePref, observer, false);
- aResolve();
- }
- }
-
- Services.prefs.addObserver(kSafeModePref, observer, false);
- });
- },
-
- // Resolves once the user has decided how to start.
- // Note that all the actions happen here, so there is no other action from
- // consumers than to go on.
- _waitForUser: function() {
- debug("waitForUser");
- let isSafeMode = Services.prefs.getCharPref(kSafeModePref) === "yes";
- if (!isSafeMode) {
- return Promise.resolve();
- }
- debug("Starting in Safe Mode!");
-
- // Load $system_app/safe_mode.html as a full screen iframe, and wait for
- // the user to make a choice.
- let shell = SafeMode.window.shell;
- let document = SafeMode.window.document;
- SafeMode.window.screen.mozLockOrientation("portrait");
-
- let url = Services.io.newURI(shell.homeURL, null, null)
- .resolve(kSafeModePage);
- debug("Registry is ready, loading " + url);
- let frame = document.createElementNS("http://www.w3.org/1999/xhtml", "html:iframe");
- frame.setAttribute("mozbrowser", "true");
- frame.setAttribute("mozapp", shell.manifestURL);
- frame.setAttribute("id", "systemapp"); // To keep screen.js happy.
- let contentBrowser = document.body.appendChild(frame);
-
- return new Promise((aResolve, aReject) => {
- let content = contentBrowser.contentWindow;
-
- // Stripped down version of the system app bootstrap.
- function handleEvent(e) {
- switch(e.type) {
- case "mozbrowserloadstart":
- if (content.document.location == "about:blank") {
- contentBrowser.addEventListener("mozbrowserlocationchange", handleEvent, true);
- contentBrowser.removeEventListener("mozbrowserloadstart", handleEvent, true);
- return;
- }
-
- notifyContentStart();
- break;
- case "mozbrowserlocationchange":
- if (content.document.location == "about:blank") {
- return;
- }
-
- contentBrowser.removeEventListener("mozbrowserlocationchange", handleEvent, true);
- notifyContentStart();
- break;
- case "mozContentEvent":
- content.removeEventListener("mozContentEvent", handleEvent, true);
- contentBrowser.parentNode.removeChild(contentBrowser);
-
- if (e.detail == "safemode-yes") {
- // Really starting in safe mode, let's disable add-ons first.
- // TODO: disable add-ons
- aResolve();
- } else {
- aResolve();
- }
- break;
- }
- }
-
- function notifyContentStart() {
- let window = SafeMode.window;
- window.shell.sendEvent(window, "SafeModeStart");
- contentBrowser.setVisible(true);
-
- // browser-ui-startup-complete is used by the AppShell to stop the
- // boot animation and start gecko rendering.
- Services.obs.notifyObservers(null, "browser-ui-startup-complete", "");
- content.addEventListener("mozContentEvent", handleEvent, true);
- }
-
- contentBrowser.addEventListener("mozbrowserloadstart", handleEvent, true);
- contentBrowser.src = url;
- });
- },
-
- // Returns a Promise that resolves once we have decided to run in safe mode
- // or not. All the safe mode switching actions happen before resolving the
- // promise.
- check: function(aWindow) {
- debug("check");
- this.window = aWindow;
- if (AppConstants.platform !== "gonk") {
- // For now we only have gonk support.
- return Promise.resolve();
- }
-
- return this._waitForPref().then(this._waitForUser);
- }
-}