Make pdf.js the default pdf viewer for moz central.

Update the tests to reflect this.

extensions/firefox/content/PdfJs.jsm

@@ -8,6 +8,9 @@ const Cu = Components.utils;
 
 const PREF_PREFIX = 'pdfjs';
 const PREF_ENABLED = PREF_PREFIX + '.enabled';
+const PREF_FIRST_RUN = PREF_PREFIX + '.firstRun';
+const PREF_PREVIOUS_ACTION = PREF_PREFIX + '.previousAction';
+const PREF_PREVIOUS_ASK = PREF_PREFIX + '.previousAsk';
 const PDFJS_HANDLER_CHANGED = 'pdfjs:handlerChanged';
 
 Cu.import('resource://gre/modules/Services.jsm');
@@ -30,7 +33,6 @@ let Factory = {
   aClass: null,
   register: function(aClass) {
     if (this.aClass) {
-      dump('Cannot register more than one class');
       return;
     }
     this.registrar = Cm.QueryInterface(Ci.nsIComponentRegistrar);
@@ -41,7 +43,6 @@ let Factory = {
   },
   unregister: function() {
     if (!this.aClass) {
-      dump('Class was never registered.');
       return;
     }
     var proto = this.aClass.prototype;
@@ -59,6 +60,25 @@ let Factory = {
 let PdfJs = {
   _registered: false,
   init: function() {
+    // On first run make pdf.js the default handler.
+    if (getBoolPref(PREF_ENABLED, false) && getBoolPref(PREF_FIRST_RUN, false)) {
+      Services.prefs.setBoolPref(PREF_FIRST_RUN, false);
+
+      let handlerService = Cc['@mozilla.org/uriloader/handler-service;1'].
+                            getService(Ci.nsIHandlerService);
+      let handlerInfo = mimeService.getFromTypeAndExtension('application/pdf', 'pdf');
+
+      // Store the previous settings of preferredAction and
+      // alwaysAskBeforeHandling in case we need to fall back to it.
+      Services.prefs.setIntPref(PREF_PREVIOUS_ACTION, handlerInfo.preferredAction);
+      Services.prefs.setBoolPref(PREF_PREVIOUS_ASK, handlerInfo.alwaysAskBeforeHandling);
+
+      // Change and save mime handler settings.
+      handlerInfo.alwaysAskBeforeHandling = false;
+      handlerInfo.preferredAction = Ci.nsIHandlerInfo.handleInternally;
+      handlerService.store(handlerInfo);
+    }
+
     if (this.enabled)
       this._register();
     else
@@ -79,7 +99,7 @@ let PdfJs = {
       this._unregister();
   },
   // pdf.js is only enabled if we're both selected as the pdf viewer and if the 
-  // global switch enabling us is true.
+  // global switch enabling it is true.
   get enabled() {
     var handlerInfo = mimeService.
                         getFromTypeAndExtension('application/pdf', 'pdf');

test/mozcentral/browser_pdfjs_main.js

@@ -6,16 +6,18 @@ const RELATIVE_DIR = "browser/extensions/pdfjs/test/";
 const TESTROOT = "http://example.com/browser/" + RELATIVE_DIR;
 
 function test() {
-  var tab, oldAction;
+  var tab;
 
-  oldAction = changeMimeHandler();
-
-    const Cc = Components.classes;
+  const Cc = Components.classes;
   const Ci = Components.interfaces;
   let handlerService = Cc["@mozilla.org/uriloader/handler-service;1"].getService(Ci.nsIHandlerService);
   let mimeService = Cc["@mozilla.org/mime;1"].getService(Ci.nsIMIMEService);
   let handlerInfo = mimeService.getFromTypeAndExtension('application/pdf', 'pdf');
 
+  // Make sure pdf.js is the default handler.
+  is(handlerInfo.alwaysAskBeforeHandling, false, 'pdf handler defaults to always-ask is false');
+  is(handlerInfo.preferredAction, Ci.nsIHandlerInfo.handleInternally, 'pdf handler defaults to internal');
+
   info('Pref action: ' + handlerInfo.preferredAction);
 
   waitForExplicitFinish();
@@ -34,7 +36,6 @@ function test() {
     // Runs tests after all 'load' event handlers have fired off
     setTimeout(function() {
       runTests(document, window, function() {
-        revertMimeHandler(oldAction);
         finish();
       });
     }, 0);
@@ -42,51 +43,6 @@ function test() {
 }
 
 
-function changeMimeHandler() {
-  let oldAction;
-
-  const Cc = Components.classes;
-  const Ci = Components.interfaces;
-  let handlerService = Cc["@mozilla.org/uriloader/handler-service;1"].getService(Ci.nsIHandlerService);
-  let mimeService = Cc["@mozilla.org/mime;1"].getService(Ci.nsIMIMEService);
-  let handlerInfo = mimeService.getFromTypeAndExtension('application/pdf', 'pdf');
-
-  oldAction = handlerInfo.preferredAction;
-
-  // Change and save mime handler settings
-  handlerInfo.alwaysAskBeforeHandling = false;
-  handlerInfo.preferredAction = Ci.nsIHandlerInfo.handleInternally;
-  handlerService.store(handlerInfo);
-
-  Services.obs.notifyObservers(null, 'pdfjs:handlerChanged', null);
-
-  // Refresh data
-  mimeService = Cc["@mozilla.org/mime;1"].getService(Ci.nsIMIMEService);
-  handlerInfo = mimeService.getFromTypeAndExtension('application/pdf', 'pdf');
-
-  //
-  // Test: Mime handler was updated
-  //
-  is(handlerInfo.alwaysAskBeforeHandling, false, 'always-ask prompt change successful');
-  is(handlerInfo.preferredAction, Ci.nsIHandlerInfo.handleInternally, 'mime handler change successful');
-
-  return oldAction;
-}
-
-function revertMimeHandler(oldAction) {
-  const Cc = Components.classes;
-  const Ci = Components.interfaces;
-  let handlerService = Cc["@mozilla.org/uriloader/handler-service;1"].getService(Ci.nsIHandlerService);
-  let mimeService = Cc["@mozilla.org/mime;1"].getService(Ci.nsIMIMEService);
-  let handlerInfo = mimeService.getFromTypeAndExtension('application/pdf', 'pdf');
-
-  // Change and save mime handler settings
-  handlerInfo.alwaysAskBeforeHandling = true;
-  handlerInfo.preferredAction = oldAction;
-  handlerService.store(handlerInfo);
-}
-
-
 function runTests(document, window, callback) {
 
   //

test/mozcentral/browser_pdfjs_savedialog.js

@@ -6,26 +6,21 @@ const RELATIVE_DIR = "browser/extensions/pdfjs/test/";
 const TESTROOT = "http://example.com/browser/" + RELATIVE_DIR;
 
 function test() {
-  var tab;
-
   const Cc = Components.classes;
   const Ci = Components.interfaces;
-  let handlerService = Cc["@mozilla.org/uriloader/handler-service;1"].getService(Ci.nsIHandlerService);
-  let mimeService = Cc["@mozilla.org/mime;1"].getService(Ci.nsIMIMEService);
-  let handlerInfo = mimeService.getFromTypeAndExtension('application/pdf', 'pdf');
+  var tab;
 
-  //
-  // Test: Default mime handler
-  //
-  is(handlerInfo.alwaysAskBeforeHandling, true, 'mime handler: default is always-ask prompt');
+  var oldAction = changeMimeHandler(Ci.nsIHandlerInfo.useSystemDefault, true);
 
   //
-  // Test: "Open with" dialog comes up
+  // Test: "Open with" dialog comes up when pdf.js is not selected as the default
+  // handler.
   //
   addWindowListener('chrome://mozapps/content/downloads/unknownContentType.xul', finish);
 
   waitForExplicitFinish();
   registerCleanupFunction(function() {
+    changeMimeHandler(oldAction[0], oldAction[1]);
     gBrowser.removeTab(tab);
   });
 
@@ -33,8 +28,37 @@ function test() {
   var newTabBrowser = gBrowser.getBrowserForTab(tab);
 }
 
+function changeMimeHandler(preferredAction, alwaysAskBeforeHandling) {
+  const Cc = Components.classes;
+  const Ci = Components.interfaces;
+  let handlerService = Cc["@mozilla.org/uriloader/handler-service;1"].getService(Ci.nsIHandlerService);
+  let mimeService = Cc["@mozilla.org/mime;1"].getService(Ci.nsIMIMEService);
+  let handlerInfo = mimeService.getFromTypeAndExtension('application/pdf', 'pdf');
+  var oldAction = [handlerInfo.preferredAction, handlerInfo.alwaysAskBeforeHandling];
+
+  // Change and save mime handler settings
+  handlerInfo.alwaysAskBeforeHandling = alwaysAskBeforeHandling;
+  handlerInfo.preferredAction = preferredAction;
+  handlerService.store(handlerInfo);
+
+  Services.obs.notifyObservers(null, 'pdfjs:handlerChanged', null);
+
+  // Refresh data
+  mimeService = Cc["@mozilla.org/mime;1"].getService(Ci.nsIMIMEService);
+  handlerInfo = mimeService.getFromTypeAndExtension('application/pdf', 'pdf');
+
+  //
+  // Test: Mime handler was updated
+  //
+  is(handlerInfo.alwaysAskBeforeHandling, alwaysAskBeforeHandling, 'always-ask prompt change successful');
+  is(handlerInfo.preferredAction, preferredAction, 'mime handler change successful');
+
+  return oldAction;
+}
 
 function addWindowListener(aURL, aCallback) {
+  const Cc = Components.classes;
+  const Ci = Components.interfaces;
   Services.wm.addListener({
     onOpenWindow: function(aXULWindow) {
       info("window opened, waiting for focus");