Bug 602983 - Add a way to check for updates from about:firefox [r=mbrubeck]

mobile/chrome/content/about.xhtml

@@ -67,6 +67,10 @@
       <img src="about:logo" alt="&brandShortName;"/>
 #expand <p id="version">&about.version; __MOZ_APP_VERSION__</p>
     </div>
+    <button id="update" onclick="checkForUpdates();">&aboutPage.checkForUpdates.button;</button>
+    <span id="update-message-checking">&aboutPage.checkForUpdates.checking;</span>
+    <span id="update-message-none">&aboutPage.checkForUpdates.none;</span>
+    <span id="update-message-found">&aboutPage.checkForUpdates.found;</span>
   
     <ul id="aboutLinks">
       <li><a id="faqURL">&aboutPage.faq.label;</a></li>
@@ -83,10 +87,11 @@
     </div>
   
     <script type="application/javascript;version=1.8"><![CDATA[
+      let Ci = Components.interfaces, Cc = Components.classes, Cu = Components.utils, Cr = Components.results;
+
       // get URLs from prefs
       try {
-        let formatter = Components.classes["@mozilla.org/toolkit/URLFormatterService;1"]
-                                  .getService(Components.interfaces.nsIURLFormatter);
+        let formatter = Cc["@mozilla.org/toolkit/URLFormatterService;1"].getService(Ci.nsIURLFormatter);
   
         let links = [
           {id: "releaseNotesURL", pref: "app.releaseNotesURL"},
@@ -108,6 +113,120 @@
         let uaP = document.getElementById("aboutUA");
         uaP.appendChild(document.createTextNode(ua));
       }
+
+      Cu.import("resource://gre/modules/XPCOMUtils.jsm");
+      Cu.import("resource://gre/modules/Services.jsm");
+
+      let Updater = {
+        isChecking: false,
+        update: null,
+
+        get updateEnabled() {
+          try {
+            return Services.prefs.getBoolPref("app.update.enabled");
+          }
+          catch (e) { }
+          return false; // Mobile default is false
+        },
+
+        startDownload: function() {
+          if (!this.update)
+            this.update = this.um.activeUpdate;
+      
+          this.aus.pauseDownload();
+          let state = this.aus.downloadUpdate(this.update, false);
+          if (state == "failed")
+            return;
+        }
+      };
+
+      XPCOMUtils.defineLazyServiceGetter(Updater, "aus",
+                                         "@mozilla.org/updates/update-service;1",
+                                         "nsIApplicationUpdateService");
+      XPCOMUtils.defineLazyServiceGetter(Updater, "checker",
+                                         "@mozilla.org/updates/update-checker;1",
+                                         "nsIUpdateChecker");
+      XPCOMUtils.defineLazyServiceGetter(Updater, "um",
+                                         "@mozilla.org/updates/update-manager;1",
+                                         "nsIUpdateManager");
+
+      let UpdateCheckListener = {
+        onProgress: function(aRequest, aPosition, aTotalSize) {
+        },
+
+        onCheckComplete: function(aRequest, aUpdates, aUpdateCount) {
+          Updater.isChecking = false;
+
+          Updater.update = Updater.aus.selectUpdate(aUpdates, aUpdates.length);
+          if (!Updater.update || !Updater.aus.canApplyUpdates) {
+            showUpdateMessage(false);
+            return;
+          }
+
+          if (!Updater.update.appVersion || Services.vc.compare(Updater.update.appVersion, Services.appinfo.version) < 0) {
+            showUpdateMessage(false);
+            return;
+          }
+
+          showUpdateMessage(true);
+          Updater.startDownload();
+        },
+
+        onError: function(aRequest, aUpdate) {
+          // Errors in the update check are treated as no updates found. If the
+          // update check fails repeatedly without a success the user will be
+          // notified with the normal app update user interface so this is safe.
+          Updater.isChecking = false;
+          showUpdateMessage(false);
+        },
+
+        QueryInterface: function(aIID) {
+          if (!aIID.equals(Ci.nsIUpdateCheckListener) && !aIID.equals(Ci.nsISupports))
+            throw Cr.NS_ERROR_NO_INTERFACE;
+          return this;
+        }
+      };
+
+      if (!Updater.updateEnabled)
+        document.getElementById("update").style.display = "none";
+
+      function checkForUpdates() {
+        Updater.isChecking = true;
+        showCheckingMessage();
+
+        Updater.checker.checkForUpdates(UpdateCheckListener, true);
+      }
+
+      let updateButton = document.getElementById("update");
+      let checkingSpan = document.getElementById("update-message-checking");
+      let noneSpan = document.getElementById("update-message-none");
+      let foundSpan = document.getElementById("update-message-found");
+
+      function showCheckingMessage() {
+        updateButton.style.display = "none";
+        noneSpan.style.display = "none";
+        foundSpan.style.display = "none";
+        checkingSpan.style.display = "block";
+      }
+
+      function showUpdateMessage(aHasUpdate) {
+        updateButton.style.display = "none";
+        checkingSpan.style.display = "none";
+        if (aHasUpdate) {
+          noneSpan.style.display = "none";
+          foundSpan.style.display = "block";
+        } else {
+          foundSpan.style.display = "none";
+          noneSpan.style.display = "block";
+        }
+
+        setTimeout(function() {
+          noneSpan.style.display = "none";
+          foundSpan.style.display = "none";
+          checkingSpan.style.display = "none";
+          updateButton.style.display = "block";
+        }, 2000);
+      }
     ]]></script>
   </div>
 </body>

mobile/locales/en-US/chrome/about.dtd

@@ -5,6 +5,11 @@
 <!ENTITY aboutPage.rights.label                 "Know Your Rights">
 <!ENTITY aboutPage.relNotes.label               "Release Notes">
 <!ENTITY aboutPage.credits.label                "Credits">
+<!ENTITY aboutPage.checkForUpdates.button       "Check for Updates">
+<!ENTITY aboutPage.checkForUpdates.checking     "Looking for updates…">
+<!ENTITY aboutPage.checkForUpdates.none         "No updates available">
+<!ENTITY aboutPage.checkForUpdates.found        "Update available">
+
 
 <!-- LOCALIZATION NOTE:
      These strings are concatenated in order. Unneeded strings may be left blank.

mobile/themes/core/aboutPage.css

@@ -45,6 +45,21 @@
   margin: -24px 20px 0 118px;
 }
 
+#update {
+  float: right;
+  padding: 8px;
+  margin-top: -32px;
+}
+
+#update-message-checking,
+#update-message-none,
+#update-message-found {
+  display: none;
+  float: right;
+  padding: 8px;
+  margin-top: -32px;
+}
+
 #aboutLinks {
   background-color: white;
   padding: 5px;