Bug 874050, Make Nofification's click event cancelable, r=wchen

--HG--
extra : rebase_source : c78a2bb9943c67e9baa7cf9a2af6bbe8188f0040

browser/base/content/test/general/browser_notification_tab_switching.js

@@ -1,58 +1,92 @@
-/* Any copyright is dedicated to the Public Domain.
- * http://creativecommons.org/publicdomain/zero/1.0/
- */
-
-"use strict";
-
-let tab;
-let notification;
-let notificationURL = "http://example.org/browser/browser/base/content/test/general/file_dom_notifications.html";
-
-function test () {
-  waitForExplicitFinish();
-
-  let pm = Services.perms;
-  registerCleanupFunction(function() {
-    pm.remove(notificationURL, "desktop-notification");
-    gBrowser.removeTab(tab);
-    window.restore();
-  });
-
-  pm.add(makeURI(notificationURL), "desktop-notification", pm.ALLOW_ACTION);
-
-  tab = gBrowser.addTab(notificationURL);
-  tab.linkedBrowser.addEventListener("load", onLoad, true);
-}
-
-function onLoad() {
-  isnot(gBrowser.selectedTab, tab, "Notification page loaded as a background tab");
-  tab.linkedBrowser.removeEventListener("load", onLoad, true);
-  let win = tab.linkedBrowser.contentWindow.wrappedJSObject;
-  notification = win.showNotification();
-  notification.addEventListener("show", onAlertShowing);
-}
-
-function onAlertShowing() {
-  info("Notification alert showing");
-  notification.removeEventListener("show", onAlertShowing);
-
-  let alertWindow = findChromeWindowByURI("chrome://global/content/alerts/alert.xul");
-  if (!alertWindow) {
-    todo(false, "Notifications don't use XUL windows on all platforms.");
-    notification.close();
-    finish();
-    return;
-  }
-  gBrowser.tabContainer.addEventListener("TabSelect", onTabSelect);
-  EventUtils.synthesizeMouseAtCenter(alertWindow.document.getElementById("alertTitleLabel"), {}, alertWindow);
-  info("Clicked on notification");
-  alertWindow.close();
-}
-
-function onTabSelect() {
-  gBrowser.tabContainer.removeEventListener("TabSelect", onTabSelect);
-  is(gBrowser.selectedTab.linkedBrowser.contentWindow.location.href, notificationURL,
-     "Notification tab should be selected.");
-
-  finish();
-}
+/* Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/
+ */
+
+"use strict";
+
+let tab;
+let notification;
+let notificationURL = "http://example.org/browser/browser/base/content/test/general/file_dom_notifications.html";
+
+function test () {
+  waitForExplicitFinish();
+
+  let pm = Services.perms;
+  registerCleanupFunction(function() {
+    pm.remove(notificationURL, "desktop-notification");
+    gBrowser.removeTab(tab);
+    window.restore();
+  });
+
+  pm.add(makeURI(notificationURL), "desktop-notification", pm.ALLOW_ACTION);
+
+  tab = gBrowser.addTab(notificationURL);
+  tab.linkedBrowser.addEventListener("load", onLoad, true);
+}
+
+function onLoad() {
+  isnot(gBrowser.selectedTab, tab, "Notification page loaded as a background tab");
+  tab.linkedBrowser.removeEventListener("load", onLoad, true);
+  let win = tab.linkedBrowser.contentWindow.wrappedJSObject;
+  win.newWindow = win.open("about:blank", "", "height=100,width=100");
+  win.newWindow.addEventListener("load", function() {
+    info("new window loaded");
+    win.newWindow.addEventListener("blur", function b() {
+      info("new window got blur");
+      win.newWindow.removeEventListener("blur", b);
+      notification = win.showNotification1();
+      win.newWindow.addEventListener("focus", onNewWindowFocused);
+      notification.addEventListener("show", onAlertShowing);
+    });
+
+    function waitUntilNewWindowHasFocus() {
+      if (!win.newWindow.document.hasFocus()) {
+        setTimeout(waitUntilNewWindowHasFocus, 50);
+      } else {
+        // Focus another window so that new window gets blur event.
+        gBrowser.selectedTab.linkedBrowser.contentWindow.focus();
+      }
+    }
+    win.newWindow.focus();
+    waitUntilNewWindowHasFocus();
+  });
+}
+
+function onAlertShowing() {
+  info("Notification alert showing");
+  notification.removeEventListener("show", onAlertShowing);
+
+  let alertWindow = findChromeWindowByURI("chrome://global/content/alerts/alert.xul");
+  if (!alertWindow) {
+    todo(false, "Notifications don't use XUL windows on all platforms.");
+    notification.close();
+    finish();
+    return;
+  }
+  gBrowser.tabContainer.addEventListener("TabSelect", onTabSelect);
+  EventUtils.synthesizeMouseAtCenter(alertWindow.document.getElementById("alertTitleLabel"), {}, alertWindow);
+  info("Clicked on notification");
+  alertWindow.close();
+}
+
+function onNewWindowFocused(event) {
+  event.target.close();
+  isnot(gBrowser.selectedTab, tab, "Notification page loaded as a background tab");
+  // Using timeout to test that something do *not* happen!
+  setTimeout(openSecondNotification, 50);
+}
+
+function openSecondNotification() {
+  isnot(gBrowser.selectedTab, tab, "Notification page loaded as a background tab");
+  let win = tab.linkedBrowser.contentWindow.wrappedJSObject;
+  notification = win.showNotification2();
+  notification.addEventListener("show", onAlertShowing);
+}
+
+function onTabSelect() {
+  gBrowser.tabContainer.removeEventListener("TabSelect", onTabSelect);
+  is(gBrowser.selectedTab.linkedBrowser.contentWindow.location.href, notificationURL,
+     "Notification tab should be selected.");
+
+  finish();
+}

browser/base/content/test/general/file_dom_notifications.html

@@ -1,23 +1,40 @@
-<html>
-<head>
-<script>
-"use strict";
-
-function showNotification() {
-  var options = {
-      dir: undefined,
-      lang: undefined,
-      body: "Test body",
-      tag: "Test tag",
-      icon: undefined,
-  };
-  return new Notification("Test title", options);
-}
-</script>
-</head>
-<body>
-<form id="notificationForm" onsubmit="showNotification();">
-  <input type="submit" value="Show notification" id="submit"/>
-</form>
-</body>
-</html>
+<html>
+<head>
+<script>
+"use strict";
+
+function showNotification1() {
+  var options = {
+      dir: undefined,
+      lang: undefined,
+      body: "Test body",
+      tag: "Test tag",
+      icon: undefined,
+  };
+  var n = new Notification("Test title", options);
+  n.addEventListener("click", function(event) {
+    event.preventDefault();
+    dump("Should focus new window.");
+    newWindow.focus();
+  });
+  return n;
+}
+
+function showNotification2() {
+  var options = {
+      dir: undefined,
+      lang: undefined,
+      body: "Test body",
+      tag: "Test tag",
+      icon: undefined,
+  };
+  return new Notification("Test title", options);
+}
+</script>
+</head>
+<body>
+<form id="notificationForm" onsubmit="showNotification();">
+  <input type="submit" value="Show notification" id="submit"/>
+</form>
+</body>
+</html>

dom/events/Event.cpp

@@ -76,6 +76,7 @@ Event::ConstructorInit(EventTarget* aOwner,
   }
 
   mPrivateDataDuplicated = false;
+  mWantsPopupControlCheck = false;
 
   if (aEvent) {
     mEvent = aEvent;
@@ -655,12 +656,20 @@ PopupAllowedForEvent(const char *eventName)
 
 // static
 PopupControlState
-Event::GetEventPopupControlState(WidgetEvent* aEvent)
+Event::GetEventPopupControlState(WidgetEvent* aEvent, nsIDOMEvent* aDOMEvent)
 {
   // generally if an event handler is running, new windows are disallowed.
   // check for exceptions:
   PopupControlState abuse = openAbused;
 
+  if (aDOMEvent && aDOMEvent->InternalDOMEvent()->GetWantsPopupControlCheck()) {
+    nsAutoString type;
+    aDOMEvent->GetType(type);
+    if (PopupAllowedForEvent(NS_ConvertUTF16toUTF8(type).get())) {
+      return openAllowed;
+    }
+  }
+
   switch(aEvent->mClass) {
   case eBasicEventClass:
     // For these following events only allow popups if they're

dom/events/Event.h

@@ -30,6 +30,7 @@ namespace dom {
 class EventTarget;
 class ErrorEvent;
 class ProgressEvent;
+class WantsPopupControlCheck;
 
 // Dummy class so we can cast through it to get from nsISupports to
 // Event subclasses with only two non-ambiguous static casts.
@@ -113,7 +114,8 @@ public:
   // Returns true if the event should be trusted.
   bool Init(EventTarget* aGlobal);
 
-  static PopupControlState GetEventPopupControlState(WidgetEvent* aEvent);
+  static PopupControlState GetEventPopupControlState(WidgetEvent* aEvent,
+                                                     nsIDOMEvent* aDOMEvent = nullptr);
 
   static void PopupAllowedEventsChanged();
 
@@ -235,6 +237,17 @@ protected:
   void SetEventType(const nsAString& aEventTypeArg);
   already_AddRefed<nsIContent> GetTargetFromFrame();
 
+  friend class WantsPopupControlCheck;
+  void SetWantsPopupControlCheck(bool aCheck)
+  {
+    mWantsPopupControlCheck = aCheck;
+  }
+
+  bool GetWantsPopupControlCheck()
+  {
+    return IsTrusted() && mWantsPopupControlCheck;
+  }
+
   /**
    * IsChrome() returns true if aCx is chrome context or the event is created
    * in chrome's thread.  Otherwise, false.
@@ -248,6 +261,28 @@ protected:
   bool                        mEventIsInternal;
   bool                        mPrivateDataDuplicated;
   bool                        mIsMainThreadEvent;
+  // True when popup control check should rely on event.type, not
+  // WidgetEvent.message.
+  bool                        mWantsPopupControlCheck;
+};
+
+class MOZ_STACK_CLASS WantsPopupControlCheck
+{
+public:
+  WantsPopupControlCheck(nsIDOMEvent* aEvent) : mEvent(aEvent->InternalDOMEvent())
+  {
+    mOriginalWantsPopupControlCheck = mEvent->GetWantsPopupControlCheck();
+    mEvent->SetWantsPopupControlCheck(mEvent->IsTrusted());
+  }
+
+  ~WantsPopupControlCheck()
+  {
+    mEvent->SetWantsPopupControlCheck(mOriginalWantsPopupControlCheck);
+  }
+
+private:
+  Event* mEvent;
+  bool mOriginalWantsPopupControlCheck;
 };
 
 } // namespace dom

dom/events/EventListenerManager.cpp

@@ -976,7 +976,7 @@ EventListenerManager::HandleEventInternal(nsPresContext* aPresContext,
   nsAutoTObserverArray<Listener, 2>::EndLimitedIterator iter(mListeners);
   Maybe<nsAutoPopupStatePusher> popupStatePusher;
   if (mIsMainThreadELM) {
-    popupStatePusher.emplace(Event::GetEventPopupControlState(aEvent));
+    popupStatePusher.emplace(Event::GetEventPopupControlState(aEvent, *aDOMEvent));
   }
 
   bool hasListener = false;

dom/notification/Notification.cpp

@@ -24,6 +24,7 @@
 #include "nsIScriptSecurityManager.h"
 #include "nsIXPConnect.h"
 #include "mozilla/dom/PermissionMessageUtils.h"
+#include "mozilla/dom/Event.h"
 #include "mozilla/Services.h"
 #include "nsContentPermissionHelper.h"
 #ifdef MOZ_B2G
@@ -360,19 +361,31 @@ NotificationObserver::Observe(nsISupports* aSubject, const char* aTopic,
                               const char16_t* aData)
 {
   nsCOMPtr<nsPIDOMWindow> window = mNotification->GetOwner();
-  if (!window) {
+  if (!window || !window->IsCurrentInnerWindow()) {
     // Window has been closed, this observer is not valid anymore
     return NS_ERROR_FAILURE;
   }
 
   if (!strcmp("alertclickcallback", aTopic)) {
-    nsIDocument* doc = window ? window->GetExtantDoc() : nullptr;
-    if (doc) {
-      nsContentUtils::DispatchChromeEvent(doc, window,
-                                          NS_LITERAL_STRING("DOMWebNotificationClicked"),
-                                          true, true);
+
+    nsCOMPtr<nsIDOMEvent> event;
+    NS_NewDOMEvent(getter_AddRefs(event), mNotification, nullptr, nullptr);
+    nsresult rv = event->InitEvent(NS_LITERAL_STRING("click"), false, true);
+    NS_ENSURE_SUCCESS(rv, rv);
+    event->SetTrusted(true);
+    WantsPopupControlCheck popupControlCheck(event);
+    bool doDefaultAction = true;
+    mNotification->DispatchEvent(event, &doDefaultAction);
+    if (doDefaultAction) {
+      nsIDocument* doc = window ? window->GetExtantDoc() : nullptr;
+      if (doc) {
+        // Browser UI may use DOMWebNotificationClicked to focus the tab
+        // from which the event was dispatched.
+        nsContentUtils::DispatchChromeEvent(doc, window->GetOuterWindow(),
+                                            NS_LITERAL_STRING("DOMWebNotificationClicked"),
+                                            true, true);
+      }
     }
-    mNotification->DispatchTrustedEvent(NS_LITERAL_STRING("click"));
   } else if (!strcmp("alertfinished", aTopic)) {
     nsCOMPtr<nsINotificationStorage> notificationStorage =
       do_GetService(NS_NOTIFICATION_STORAGE_CONTRACTID);