michael@0: // -*- Mode: js2; tab-width: 2; indent-tabs-mode: nil; js2-basic-offset: 2; js2-skip-preprocessor-directives: t; -*-
michael@0: /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 'use strict';
michael@0: 
michael@0: Cu.import("resource://gre/modules/Services.jsm");
michael@0: let gAppUpdater;
michael@0: 
michael@0: let AboutFlyoutPanel = {
michael@0:   init: function() {
michael@0:     if (this._isInitialized) {
michael@0:       Cu.reportError("Attempted to initialize AboutFlyoutPanel more than once");
michael@0:     }
michael@0: 
michael@0:     this._isInitialized = true;
michael@0: 
michael@0:     let self = this;
michael@0:     this._elements = {};
michael@0:     [
michael@0:       ['versionLabel', 'about-version-label'],
michael@0:       ['AboutFlyoutPanel',  'about-flyoutpanel'],
michael@0:     ].forEach(function(aElement) {
michael@0:       let [name, id] = aElement;
michael@0:       XPCOMUtils.defineLazyGetter(self._elements, name, function() {
michael@0:         return document.getElementById(id);
michael@0:       });
michael@0:     });
michael@0: 
michael@0:     this._topmostElement = this._elements.AboutFlyoutPanel;
michael@0: 
michael@0:     // Include the build ID if this is an "a#" (nightly or aurora) build
michael@0:     let version = Services.appinfo.version;
michael@0:     if (/a\d+$/.test(version)) {
michael@0:       let buildID = Services.appinfo.appBuildID;
michael@0:       let buildDate = buildID.slice(0,4) + "-" + buildID.slice(4,6) +
michael@0:                       "-" + buildID.slice(6,8);
michael@0:       this._elements.versionLabel.textContent +=" (" + buildDate + ")";
michael@0:     }
michael@0: 
michael@0:     window.addEventListener('MozFlyoutPanelShowing', this, false);
michael@0:     window.addEventListener('MozFlyoutPanelHiding', this, false);
michael@0: 
michael@0: #if MOZ_UPDATE_CHANNEL != release
michael@0:     let defaults = Services.prefs.getDefaultBranch("");
michael@0:     let channelLabel = document.getElementById("currentChannel");
michael@0:     channelLabel.value = defaults.getCharPref("app.update.channel");
michael@0: #endif
michael@0:   },
michael@0: 
michael@0:   onPolicyClick: function(aEvent) {
michael@0:     if (aEvent.button != 0) {
michael@0:       return;
michael@0:     }
michael@0:     let url = Services.urlFormatter.formatURLPref("app.privacyURL");
michael@0:     BrowserUI.addAndShowTab(url, Browser.selectedTab);
michael@0:   },
michael@0: 
michael@0:   handleEvent: function(aEvent) {
michael@0:     switch (aEvent.type) {
michael@0:       case 'MozFlyoutPanelShowing':
michael@0: #ifdef MOZ_UPDATER
michael@0:         this.appUpdater = new appUpdater();
michael@0:         gAppUpdater = this.appUpdater;
michael@0: #endif
michael@0:         break;
michael@0:       case 'MozFlyoutPanelHiding':
michael@0: #ifdef MOZ_UPDATER
michael@0:         onUnload();
michael@0: #endif
michael@0:         break;
michael@0:     }
michael@0:   }
michael@0: };
michael@0: 
michael@0: #ifdef MOZ_UPDATER
michael@0: function onUnload(aEvent) {
michael@0:   if (!gAppUpdater) {
michael@0:     return;
michael@0:   }
michael@0: 
michael@0:   if (gAppUpdater.isChecking)
michael@0:     gAppUpdater.checker.stopChecking(Components.interfaces.nsIUpdateChecker.CURRENT_CHECK);
michael@0:   // Safe to call even when there isn't a download in progress.
michael@0:   gAppUpdater.removeDownloadListener();
michael@0:   gAppUpdater = null;
michael@0:   AboutFlyoutPanel.appUpdater = null;
michael@0: }
michael@0: 
michael@0: function appUpdater()
michael@0: {
michael@0:   this.updateDeck = document.getElementById("updateDeck");
michael@0: 
michael@0:   XPCOMUtils.defineLazyServiceGetter(this, "aus",
michael@0:                                      "@mozilla.org/updates/update-service;1",
michael@0:                                      "nsIApplicationUpdateService");
michael@0:   XPCOMUtils.defineLazyServiceGetter(this, "checker",
michael@0:                                      "@mozilla.org/updates/update-checker;1",
michael@0:                                      "nsIUpdateChecker");
michael@0:   XPCOMUtils.defineLazyServiceGetter(this, "um",
michael@0:                                      "@mozilla.org/updates/update-manager;1",
michael@0:                                      "nsIUpdateManager");
michael@0: 
michael@0:   this.bundle = Services.strings.
michael@0:                 createBundle("chrome://browser/locale/browser.properties");
michael@0: 
michael@0:   this.updateBtn = document.getElementById("updateButton");
michael@0: 
michael@0:   // The button label value must be set so its height is correct.
michael@0:   this.setupUpdateButton("update.checkInsideButton");
michael@0: 
michael@0:   let manualURL = Services.urlFormatter.formatURLPref("app.update.url.manual");
michael@0:   let manualLink = document.getElementById("manualLink");
michael@0:   manualLink.value = manualURL;
michael@0:   manualLink.href = manualURL;
michael@0:   document.getElementById("failedLink").href = manualURL;
michael@0: 
michael@0:   if (this.updateDisabledAndLocked) {
michael@0:     this.selectPanel("adminDisabled");
michael@0:     return;
michael@0:   }
michael@0: 
michael@0:   if (this.isPending || this.isApplied) {
michael@0:     this.setupUpdateButton("update.restart." +
michael@0:                            (this.isMajor ? "upgradeButton" : "updateButton"));
michael@0:     return;
michael@0:   }
michael@0: 
michael@0:   if (this.aus.isOtherInstanceHandlingUpdates) {
michael@0:     this.selectPanel("otherInstanceHandlingUpdates");
michael@0:     return;
michael@0:   }
michael@0: 
michael@0:   if (this.isDownloading) {
michael@0:     this.startDownload();
michael@0:     return;
michael@0:   }
michael@0: 
michael@0:   if (this.updateEnabled && this.updateAuto) {
michael@0:     this.selectPanel("checkingForUpdates");
michael@0:     this.isChecking = true;
michael@0:     this.checker.checkForUpdates(this.updateCheckListener, true);
michael@0:     return;
michael@0:   }
michael@0: }
michael@0: 
michael@0: appUpdater.prototype =
michael@0: {
michael@0:   // true when there is an update check in progress.
michael@0:   isChecking: false,
michael@0: 
michael@0:   // true when there is an update already staged / ready to be applied.
michael@0:   get isPending() {
michael@0:     if (this.update) {
michael@0:       return this.update.state == "pending" ||
michael@0:              this.update.state == "pending-service";
michael@0:     }
michael@0:     return this.um.activeUpdate &&
michael@0:            (this.um.activeUpdate.state == "pending" ||
michael@0:             this.um.activeUpdate.state == "pending-service");
michael@0:   },
michael@0: 
michael@0:   // true when there is an update already installed in the background.
michael@0:   get isApplied() {
michael@0:     if (this.update)
michael@0:       return this.update.state == "applied" ||
michael@0:              this.update.state == "applied-service";
michael@0:     return this.um.activeUpdate &&
michael@0:            (this.um.activeUpdate.state == "applied" ||
michael@0:             this.um.activeUpdate.state == "applied-service");
michael@0:   },
michael@0: 
michael@0:   // true when there is an update download in progress.
michael@0:   get isDownloading() {
michael@0:     if (this.update)
michael@0:       return this.update.state == "downloading";
michael@0:     return this.um.activeUpdate &&
michael@0:            this.um.activeUpdate.state == "downloading";
michael@0:   },
michael@0: 
michael@0:   // true when the update type is major.
michael@0:   get isMajor() {
michael@0:     if (this.update)
michael@0:       return this.update.type == "major";
michael@0:     return this.um.activeUpdate.type == "major";
michael@0:   },
michael@0: 
michael@0:   // true when updating is disabled by an administrator.
michael@0:   get updateDisabledAndLocked() {
michael@0:     return !this.updateEnabled &&
michael@0:            Services.prefs.prefIsLocked("app.update.enabled");
michael@0:   },
michael@0: 
michael@0:   // true when updating is enabled.
michael@0:   get updateEnabled() {
michael@0:     let updatesEnabled = true;
michael@0:     try {
michael@0:       updatesEnabled = Services.prefs.getBoolPref("app.update.metro.enabled");
michael@0:     }
michael@0:     catch (e) { }
michael@0:     if (!updatesEnabled) {
michael@0:       return false;
michael@0:     }
michael@0: 
michael@0:     try {
michael@0:       updatesEnabled = Services.prefs.getBoolPref("app.update.enabled")
michael@0:     }
michael@0:     catch (e) { }
michael@0: 
michael@0:     return updatesEnabled;
michael@0:   },
michael@0: 
michael@0:   // true when updating in background is enabled.
michael@0:   get backgroundUpdateEnabled() {
michael@0:     return this.updateEnabled &&
michael@0:            gAppUpdater.aus.canStageUpdates;
michael@0:   },
michael@0: 
michael@0:   // true when updating is automatic.
michael@0:   get updateAuto() {
michael@0:     try {
michael@0:       return Services.prefs.getBoolPref("app.update.auto");
michael@0:     }
michael@0:     catch (e) { }
michael@0:     return true; // Firefox default is true
michael@0:   },
michael@0: 
michael@0:   /**
michael@0:    * Sets the deck's selected panel.
michael@0:    *
michael@0:    * @param  aChildID
michael@0:    *         The id of the deck's child to select.
michael@0:    */
michael@0:   selectPanel: function(aChildID) {
michael@0:     this.updateDeck.selectedPanel = document.getElementById(aChildID);
michael@0:     this.updateBtn.disabled = (aChildID != "updateButtonBox");
michael@0:   },
michael@0: 
michael@0:   /**
michael@0:    * Sets the update button's label and accesskey.
michael@0:    *
michael@0:    * @param  aKeyPrefix
michael@0:    *         The prefix for the properties file entry to use for setting the
michael@0:    *         label and accesskey.
michael@0:    */
michael@0:   setupUpdateButton: function(aKeyPrefix) {
michael@0:     this.updateBtn.label = this.bundle.GetStringFromName(aKeyPrefix + ".label");
michael@0:     this.updateBtn.accessKey = this.bundle.GetStringFromName(aKeyPrefix + ".accesskey");
michael@0:     if (!document.commandDispatcher.focusedElement ||
michael@0:         document.commandDispatcher.focusedElement == this.updateBtn)
michael@0:       this.updateBtn.focus();
michael@0:   },
michael@0: 
michael@0:   /**
michael@0:    * Handles oncommand for the update button.
michael@0:    */
michael@0:   buttonOnCommand: function() {
michael@0:     if (this.isPending || this.isApplied) {
michael@0:       // Notify all windows that an application quit has been requested.
michael@0:       let cancelQuit = Components.classes["@mozilla.org/supports-PRBool;1"].
michael@0:                        createInstance(Components.interfaces.nsISupportsPRBool);
michael@0:       Services.obs.notifyObservers(cancelQuit, "quit-application-requested", "restart");
michael@0: 
michael@0:       // Something aborted the quit process.
michael@0:       if (cancelQuit.data)
michael@0:         return;
michael@0: 
michael@0:       let appStartup = Components.classes["@mozilla.org/toolkit/app-startup;1"].
michael@0:                        getService(Components.interfaces.nsIAppStartup);
michael@0: 
michael@0:       // If already in safe mode restart in safe mode (bug 327119)
michael@0:       if (Services.appinfo.inSafeMode) {
michael@0:         appStartup.restartInSafeMode(Components.interfaces.nsIAppStartup.eAttemptQuit);
michael@0:         return;
michael@0:       }
michael@0: 
michael@0:       Services.metro.updatePending = true;
michael@0:       appStartup.quit(Components.interfaces.nsIAppStartup.eAttemptQuit |
michael@0:                       Components.interfaces.nsIAppStartup.eRestartTouchEnvironment);
michael@0:       return;
michael@0:     }
michael@0: 
michael@0:     // XXX We can't create dialogs in metro, and we currently don't support addons, so
michael@0:     // commenting this out for now.
michael@0:     /* const URI_UPDATE_PROMPT_DIALOG = "chrome://mozapps/content/update/updates.xul";
michael@0:     // Firefox no longer displays a license for updates and the licenseURL check
michael@0:     // is just in case a distibution does.
michael@0:     if (this.update && (this.update.billboardURL || this.update.licenseURL ||
michael@0:         this.addons.length != 0)) {
michael@0:       var ary = null;
michael@0:       ary = Components.classes["@mozilla.org/supports-array;1"].
michael@0:             createInstance(Components.interfaces.nsISupportsArray);
michael@0:       ary.AppendElement(this.update);
michael@0:       var openFeatures = "chrome,centerscreen,dialog=no,resizable=no,titlebar,toolbar=no";
michael@0:       Services.ww.openWindow(null, URI_UPDATE_PROMPT_DIALOG, "", openFeatures, ary);
michael@0:       window.close();
michael@0:       return;
michael@0:     }*/
michael@0: 
michael@0:     this.selectPanel("checkingForUpdates");
michael@0:     this.isChecking = true;
michael@0:     this.checker.checkForUpdates(this.updateCheckListener, true);
michael@0:   },
michael@0: 
michael@0:   /**
michael@0:    * Implements nsIUpdateCheckListener. The methods implemented by
michael@0:    * nsIUpdateCheckListener are in a different scope from nsIIncrementalDownload
michael@0:    * to make it clear which are used by each interface.
michael@0:    */
michael@0:   updateCheckListener: {
michael@0:     /**
michael@0:      * See nsIUpdateService.idl
michael@0:      */
michael@0:     onCheckComplete: function(aRequest, aUpdates, aUpdateCount) {
michael@0:       gAppUpdater.isChecking = false;
michael@0:       gAppUpdater.update = gAppUpdater.aus.
michael@0:                            selectUpdate(aUpdates, aUpdates.length);
michael@0:       if (!gAppUpdater.update) {
michael@0:         gAppUpdater.selectPanel("noUpdatesFound");
michael@0:         return;
michael@0:       }
michael@0: 
michael@0:       if (!gAppUpdater.aus.canApplyUpdates) {
michael@0:         gAppUpdater.selectPanel("manualUpdate");
michael@0:         return;
michael@0:       }
michael@0: 
michael@0:       // Firefox no longer displays a license for updates and the licenseURL
michael@0:       // check is just in case a distibution does.
michael@0:       if (gAppUpdater.update.billboardURL || gAppUpdater.update.licenseURL) {
michael@0:         gAppUpdater.selectPanel("updateButtonBox");
michael@0:         gAppUpdater.setupUpdateButton("update.openUpdateUI." +
michael@0:                                       (this.isMajor ? "upgradeButton"
michael@0:                                                     : "applyButton"));
michael@0:         return;
michael@0:       }
michael@0: 
michael@0:       if (!gAppUpdater.update.appVersion ||
michael@0:           Services.vc.compare(gAppUpdater.update.appVersion,
michael@0:                               Services.appinfo.version) == 0) {
michael@0:         gAppUpdater.startDownload();
michael@0:         return;
michael@0:       }
michael@0: 
michael@0:       gAppUpdater.checkAddonCompatibility();
michael@0:     },
michael@0: 
michael@0:     /**
michael@0:      * See nsIUpdateService.idl
michael@0:      */
michael@0:     onError: function(aRequest, aUpdate) {
michael@0:       // Errors in the update check are treated as no updates found. If the
michael@0:       // update check fails repeatedly without a success the user will be
michael@0:       // notified with the normal app update user interface so this is safe.
michael@0:       gAppUpdater.isChecking = false;
michael@0:       gAppUpdater.selectPanel("noUpdatesFound");
michael@0:     },
michael@0: 
michael@0:     /**
michael@0:      * See nsISupports.idl
michael@0:      */
michael@0:     QueryInterface: function(aIID) {
michael@0:       if (!aIID.equals(Components.interfaces.nsIUpdateCheckListener) &&
michael@0:           !aIID.equals(Components.interfaces.nsISupports))
michael@0:         throw Components.results.NS_ERROR_NO_INTERFACE;
michael@0:       return this;
michael@0:     }
michael@0:   },
michael@0: 
michael@0:   /**
michael@0:    * Checks the compatibility of add-ons for the application update.
michael@0:    */
michael@0:   checkAddonCompatibility: function() {
michael@0:     try {
michael@0:       var hotfixID = Services.prefs.getCharPref(PREF_EM_HOTFIX_ID);
michael@0:     }
michael@0:     catch (e) { }
michael@0: 
michael@0:     var self = this;
michael@0:     AddonManager.getAllAddons(function(aAddons) {
michael@0:       self.addons = [];
michael@0:       self.addonsCheckedCount = 0;
michael@0:       aAddons.forEach(function(aAddon) {
michael@0:         // Protect against code that overrides the add-ons manager and doesn't
michael@0:         // implement the isCompatibleWith or the findUpdates method.
michael@0:         if (!("isCompatibleWith" in aAddon) || !("findUpdates" in aAddon)) {
michael@0:           let errMsg = "Add-on doesn't implement either the isCompatibleWith " +
michael@0:                        "or the findUpdates method!";
michael@0:           if (aAddon.id)
michael@0:             errMsg += " Add-on ID: " + aAddon.id;
michael@0:           Components.utils.reportError(errMsg);
michael@0:           return;
michael@0:         }
michael@0: 
michael@0:         // If an add-on isn't appDisabled and isn't userDisabled then it is
michael@0:         // either active now or the user expects it to be active after the
michael@0:         // restart. If that is the case and the add-on is not installed by the
michael@0:         // application and is not compatible with the new application version
michael@0:         // then the user should be warned that the add-on will become
michael@0:         // incompatible. If an addon's type equals plugin it is skipped since
michael@0:         // checking plugins compatibility information isn't supported and
michael@0:         // getting the scope property of a plugin breaks in some environments
michael@0:         // (see bug 566787). The hotfix add-on is also ignored as it shouldn't
michael@0:         // block the user from upgrading.
michael@0:         try {
michael@0:           if (aAddon.type != "plugin" && aAddon.id != hotfixID &&
michael@0:               !aAddon.appDisabled && !aAddon.userDisabled &&
michael@0:               aAddon.scope != AddonManager.SCOPE_APPLICATION &&
michael@0:               aAddon.isCompatible &&
michael@0:               !aAddon.isCompatibleWith(self.update.appVersion,
michael@0:                                        self.update.platformVersion))
michael@0:             self.addons.push(aAddon);
michael@0:         }
michael@0:         catch (e) {
michael@0:           Components.utils.reportError(e);
michael@0:         }
michael@0:       });
michael@0:       self.addonsTotalCount = self.addons.length;
michael@0:       if (self.addonsTotalCount == 0) {
michael@0:         self.startDownload();
michael@0:         return;
michael@0:       }
michael@0: 
michael@0:       self.checkAddonsForUpdates();
michael@0:     });
michael@0:   },
michael@0: 
michael@0:   /**
michael@0:    * Checks if there are updates for add-ons that are incompatible with the
michael@0:    * application update.
michael@0:    */
michael@0:   checkAddonsForUpdates: function() {
michael@0:     this.addons.forEach(function(aAddon) {
michael@0:       aAddon.findUpdates(this, AddonManager.UPDATE_WHEN_NEW_APP_DETECTED,
michael@0:                          this.update.appVersion,
michael@0:                          this.update.platformVersion);
michael@0:     }, this);
michael@0:   },
michael@0: 
michael@0:   /**
michael@0:    * See XPIProvider.jsm
michael@0:    */
michael@0:   onCompatibilityUpdateAvailable: function(aAddon) {
michael@0:     for (var i = 0; i < this.addons.length; ++i) {
michael@0:       if (this.addons[i].id == aAddon.id) {
michael@0:         this.addons.splice(i, 1);
michael@0:         break;
michael@0:       }
michael@0:     }
michael@0:   },
michael@0: 
michael@0:   /**
michael@0:    * See XPIProvider.jsm
michael@0:    */
michael@0:   onUpdateAvailable: function(aAddon, aInstall) {
michael@0:     if (!Services.blocklist.isAddonBlocklisted(aAddon,
michael@0:                                                this.update.appVersion,
michael@0:                                                this.update.platformVersion)) {
michael@0:       // Compatibility or new version updates mean the same thing here.
michael@0:       this.onCompatibilityUpdateAvailable(aAddon);
michael@0:     }
michael@0:   },
michael@0: 
michael@0:   /**
michael@0:    * See XPIProvider.jsm
michael@0:    */
michael@0:   onUpdateFinished: function(aAddon) {
michael@0:     ++this.addonsCheckedCount;
michael@0: 
michael@0:     if (this.addonsCheckedCount < this.addonsTotalCount)
michael@0:       return;
michael@0: 
michael@0:     if (this.addons.length == 0) {
michael@0:       // Compatibility updates or new version updates were found for all add-ons
michael@0:       this.startDownload();
michael@0:       return;
michael@0:     }
michael@0: 
michael@0:     this.selectPanel("updateButtonBox");
michael@0:     this.setupUpdateButton("update.openUpdateUI." +
michael@0:                            (this.isMajor ? "upgradeButton" : "applyButton"));
michael@0:   },
michael@0: 
michael@0:   /**
michael@0:    * Starts the download of an update mar.
michael@0:    */
michael@0:   startDownload: function() {
michael@0:     if (!this.update)
michael@0:       this.update = this.um.activeUpdate;
michael@0:     this.update.QueryInterface(Components.interfaces.nsIWritablePropertyBag);
michael@0:     this.update.setProperty("foregroundDownload", "true");
michael@0: 
michael@0:     this.aus.pauseDownload();
michael@0:     let state = this.aus.downloadUpdate(this.update, false);
michael@0:     if (state == "failed") {
michael@0:       this.selectPanel("downloadFailed");
michael@0:       return;
michael@0:     }
michael@0: 
michael@0:     this.setupDownloadingUI();
michael@0:   },
michael@0: 
michael@0:   /**
michael@0:    * Switches to the UI responsible for tracking the download.
michael@0:    */
michael@0:   setupDownloadingUI: function() {
michael@0:     this.downloadStatus = document.getElementById("downloadStatus");
michael@0:     this.downloadStatus.textContent =
michael@0:       DownloadUtils.getTransferTotal(0, this.update.selectedPatch.size);
michael@0:     this.selectPanel("downloading");
michael@0:     this.aus.addDownloadListener(this);
michael@0:   },
michael@0: 
michael@0:   removeDownloadListener: function() {
michael@0:     if (this.aus) {
michael@0:       this.aus.removeDownloadListener(this);
michael@0:     }
michael@0:   },
michael@0: 
michael@0:   /**
michael@0:    * See nsIRequestObserver.idl
michael@0:    */
michael@0:   onStartRequest: function(aRequest, aContext) {
michael@0:   },
michael@0: 
michael@0:   /**
michael@0:    * See nsIRequestObserver.idl
michael@0:    */
michael@0:   onStopRequest: function(aRequest, aContext, aStatusCode) {
michael@0:     switch (aStatusCode) {
michael@0:     case Components.results.NS_ERROR_UNEXPECTED:
michael@0:       if (this.update.selectedPatch.state == "download-failed" &&
michael@0:           (this.update.isCompleteUpdate || this.update.patchCount != 2)) {
michael@0:         // Verification error of complete patch, informational text is held in
michael@0:         // the update object.
michael@0:         this.removeDownloadListener();
michael@0:         this.selectPanel("downloadFailed");
michael@0:         break;
michael@0:       }
michael@0:       // Verification failed for a partial patch, complete patch is now
michael@0:       // downloading so return early and do NOT remove the download listener!
michael@0:       break;
michael@0:     case Components.results.NS_BINDING_ABORTED:
michael@0:       // Do not remove UI listener since the user may resume downloading again.
michael@0:       break;
michael@0:     case Components.results.NS_OK:
michael@0:       this.removeDownloadListener();
michael@0:       if (this.backgroundUpdateEnabled) {
michael@0:         this.selectPanel("applying");
michael@0:         let update = this.um.activeUpdate;
michael@0:         let self = this;
michael@0:         Services.obs.addObserver(function updateStaged(aSubject, aTopic, aData) {
michael@0:           // Update the UI when the background updater is finished
michael@0:           let status = aData;
michael@0:           if (status == "applied" || status == "applied-service" ||
michael@0:               status == "pending" || status == "pending-service") {
michael@0:             // If the update is successfully applied, or if the updater has
michael@0:             // fallen back to non-staged updates, show the Restart to Update
michael@0:             // button.
michael@0:             self.selectPanel("updateButtonBox");
michael@0:             self.setupUpdateButton("update.restart." +
michael@0:                                    (self.isMajor ? "upgradeButton" : "updateButton"));
michael@0:           } else if (status == "failed") {
michael@0:             // Background update has failed, let's show the UI responsible for
michael@0:             // prompting the user to update manually.
michael@0:             self.selectPanel("downloadFailed");
michael@0:           } else if (status == "downloading") {
michael@0:             // We've fallen back to downloading the full update because the
michael@0:             // partial update failed to get staged in the background.
michael@0:             // Therefore we need to keep our observer.
michael@0:             self.setupDownloadingUI();
michael@0:             return;
michael@0:           }
michael@0:           Services.obs.removeObserver(updateStaged, "update-staged");
michael@0:         }, "update-staged", false);
michael@0:       } else {
michael@0:         this.selectPanel("updateButtonBox");
michael@0:         this.setupUpdateButton("update.restart." +
michael@0:                                (this.isMajor ? "upgradeButton" : "updateButton"));
michael@0:       }
michael@0:       break;
michael@0:     default:
michael@0:       this.removeDownloadListener();
michael@0:       this.selectPanel("downloadFailed");
michael@0:       break;
michael@0:     }
michael@0: 
michael@0:   },
michael@0: 
michael@0:   /**
michael@0:    * See nsIProgressEventSink.idl
michael@0:    */
michael@0:   onStatus: function(aRequest, aContext, aStatus, aStatusArg) {
michael@0:   },
michael@0: 
michael@0:   /**
michael@0:    * See nsIProgressEventSink.idl
michael@0:    */
michael@0:   onProgress: function(aRequest, aContext, aProgress, aProgressMax) {
michael@0:     this.downloadStatus.textContent =
michael@0:       DownloadUtils.getTransferTotal(aProgress, aProgressMax);
michael@0:   },
michael@0: 
michael@0:   /**
michael@0:    * See nsISupports.idl
michael@0:    */
michael@0:   QueryInterface: function(aIID) {
michael@0:     if (!aIID.equals(Components.interfaces.nsIProgressEventSink) &&
michael@0:         !aIID.equals(Components.interfaces.nsIRequestObserver) &&
michael@0:         !aIID.equals(Components.interfaces.nsISupports))
michael@0:       throw Components.results.NS_ERROR_NO_INTERFACE;
michael@0:     return this;
michael@0:   }
michael@0: };
michael@0: #endif