new file mode 100644
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,41 @@
+# .gitignore - List of filenames git should ignore
+
+# Filenames that should be ignored wherever they appear
+*~
+*.pyc
+*.pyo
+TAGS
+tags
+ID
+.DS_Store*
+
+# Vim swap files.
+.*.sw[a-z]
+
+# User files that may appear at the root
+.mozconfig
+mozconfig
+configure
+config.cache
+config.log
+
+# Empty marker file that's generated when we check out NSS
+security/manager/.nss.checkout
+
+# Build directories
+obj/*
+
+# Build directories for js shell
+*/_DBG.OBJ/
+*/_OPT.OBJ/
+
+# SpiderMonkey configury
+js/src/configure
+js/src/autom4te.cache
+# SpiderMonkey test result logs
+js/src/tests/results-*.html
+js/src/tests/results-*.txt
+
+# Java HTML5 parser classes
+parser/html/java/htmlparser/
+parser/html/java/javaparser/

--- a/accessible/public/nsIAccessibleEvent.idl
+++ b/accessible/public/nsIAccessibleEvent.idl
@@ -54,17 +54,17 @@ interface nsIDOMNode;
  * the event and its target. To listen to in-process accessibility invents,
  * make your object an nsIObserver, and listen for accessible-event by 
  * using code something like this:
  *   nsCOMPtr<nsIObserverService> observerService = 
  *     do_GetService("@mozilla.org/observer-service;1", &rv);
  *   if (NS_SUCCEEDED(rv)) 
  *     rv = observerService->AddObserver(this, "accessible-event", PR_TRUE);
  */
-[scriptable, uuid(fd1378c5-c606-4a5e-a321-8e7fc107e5cf)]
+[scriptable, uuid(7f66a33a-9ed7-4fd4-87a8-e431b0f43368)]
 interface nsIAccessibleEvent : nsISupports
 {
   /**
    * An object has been created.
    */
   const unsigned long EVENT_SHOW = 0x0001;
 
   /**
@@ -275,17 +275,22 @@ interface nsIAccessibleEvent : nsISuppor
   const unsigned long EVENT_DOCUMENT_ATTRIBUTES_CHANGED = 0x002A;
 
   /**
    * The contents of the document have changed.
    */
   const unsigned long EVENT_DOCUMENT_CONTENT_CHANGED = 0x002B;
 
   const unsigned long EVENT_PROPERTY_CHANGED = 0x002C;
-  const unsigned long EVENT_SELECTION_CHANGED = 0x002D;
+
+  /**
+   * A slide changed in a presentation document or a page boundary was
+   * crossed in a word processing document.
+   */
+  const unsigned long EVENT_PAGE_CHANGED = 0x002D;
 
   /**
    * A text object's attributes changed.
    * Also see EVENT_OBJECT_ATTRIBUTE_CHANGED.
    */
   const unsigned long EVENT_TEXT_ATTRIBUTE_CHANGED = 0x002E;
 
   /**
@@ -432,25 +437,19 @@ interface nsIAccessibleEvent : nsISuppor
   const unsigned long EVENT_HYPERTEXT_NLINKS_CHANGED = 0x0054;
 
   /**
    * An object's attributes changed. Also see EVENT_TEXT_ATTRIBUTE_CHANGED.
    */
   const unsigned long EVENT_OBJECT_ATTRIBUTE_CHANGED = 0x0055;
 
   /**
-   * A slide changed in a presentation document or a page boundary was
-   * crossed in a word processing document.
-   */
-  const unsigned long EVENT_PAGE_CHANGED = 0x0056;
-
-  /**
    * Help make sure event map does not get out-of-line.
    */
-  const unsigned long EVENT_LAST_ENTRY = 0x0057;
+  const unsigned long EVENT_LAST_ENTRY = 0x0056;
 
   /**
    * The type of event, based on the enumerated event values
    * defined in this interface.
    */
   readonly attribute unsigned long eventType;
   
   /**

--- a/accessible/src/atk/nsAccessibleWrap.cpp
+++ b/accessible/src/atk/nsAccessibleWrap.cpp
@@ -1084,20 +1084,34 @@ nsAccessibleWrap::FirePlatformEvent(AccE
         nsCOMPtr<nsIAccessibleValue> value(do_QueryObject(accessible));
         if (value) {    // Make sure this is a numeric value
             // Don't fire for MSAA string value changes (e.g. text editing)
             // ATK values are always numeric
             g_object_notify( (GObject*)atkObj, "accessible-value" );
         }
       } break;
 
-    case nsIAccessibleEvent::EVENT_SELECTION_CHANGED:
-        MAI_LOG_DEBUG(("\n\nReceived: EVENT_SELECTION_CHANGED\n"));
-        g_signal_emit_by_name(atkObj, "selection_changed");
-        break;
+    case nsIAccessibleEvent::EVENT_SELECTION:
+    case nsIAccessibleEvent::EVENT_SELECTION_ADD:
+    case nsIAccessibleEvent::EVENT_SELECTION_REMOVE:
+    {
+      // XXX: dupe events may be fired
+      MAI_LOG_DEBUG(("\n\nReceived: EVENT_SELECTION_CHANGED\n"));
+      AccSelChangeEvent* selChangeEvent = downcast_accEvent(aEvent);
+      g_signal_emit_by_name(nsAccessibleWrap::GetAtkObject(selChangeEvent->Widget()),
+                            "selection_changed");
+      break;
+    }
+
+    case nsIAccessibleEvent::EVENT_SELECTION_WITHIN:
+    {
+      MAI_LOG_DEBUG(("\n\nReceived: EVENT_SELECTION_CHANGED\n"));
+      g_signal_emit_by_name(atkObj, "selection_changed");
+      break;
+    }
 
     case nsIAccessibleEvent::EVENT_TEXT_SELECTION_CHANGED:
         MAI_LOG_DEBUG(("\n\nReceived: EVENT_TEXT_SELECTION_CHANGED\n"));
         g_signal_emit_by_name(atkObj, "text_selection_changed");
         break;
 
     case nsIAccessibleEvent::EVENT_TEXT_CARET_MOVED:
       {

--- a/accessible/src/base/AccEvent.cpp
+++ b/accessible/src/base/AccEvent.cpp
@@ -326,16 +326,38 @@ AccCaretMoveEvent::CreateXPCOMObject()
 {
   nsAccEvent* event = new nsAccCaretMoveEvent(this);
   NS_IF_ADDREF(event);
   return event;
 }
 
 
 ////////////////////////////////////////////////////////////////////////////////
+// AccSelChangeEvent
+////////////////////////////////////////////////////////////////////////////////
+
+AccSelChangeEvent::
+  AccSelChangeEvent(nsAccessible* aWidget, nsAccessible* aItem,
+                    SelChangeType aSelChangeType) :
+    AccEvent(0, aItem, eAutoDetect, eCoalesceSelectionChange),
+    mWidget(aWidget), mItem(aItem), mSelChangeType(aSelChangeType),
+    mPreceedingCount(0), mPackedEvent(nsnull)
+{
+  if (aSelChangeType == eSelectionAdd) {
+    if (mWidget->GetSelectedItem(1))
+      mEventType = nsIAccessibleEvent::EVENT_SELECTION_ADD;
+    else
+      mEventType = nsIAccessibleEvent::EVENT_SELECTION;
+  } else {
+    mEventType = nsIAccessibleEvent::EVENT_SELECTION_REMOVE;
+  }
+}
+
+
+////////////////////////////////////////////////////////////////////////////////
 // AccTableChangeEvent
 ////////////////////////////////////////////////////////////////////////////////
 
 AccTableChangeEvent::
   AccTableChangeEvent(nsAccessible* aAccessible, PRUint32 aEventType,
                       PRInt32 aRowOrColIndex, PRInt32 aNumRowsOrCols) :
   AccEvent(aEventType, aAccessible),
   mRowOrColIndex(aRowOrColIndex), mNumRowsOrCols(aNumRowsOrCols)

--- a/accessible/src/base/AccEvent.h
+++ b/accessible/src/base/AccEvent.h
@@ -77,16 +77,19 @@ public:
      //    subtree or the same node, only the umbrella event on the ancestor
      //    will be emitted.
      eCoalesceFromSameSubtree,
 
     // eCoalesceOfSameType : For events of the same type, only the newest event
     // will be processed.
     eCoalesceOfSameType,
 
+    // eCoalesceSelectionChange: coalescence of selection change events.
+    eCoalesceSelectionChange,
+
      // eRemoveDupes : For repeat events, only the newest event in queue
      //    will be emitted.
      eRemoveDupes,
 
      // eDoNotEmit : This event is confirmed as a duplicate, do not emit it.
      eDoNotEmit
   };
 
@@ -120,16 +123,17 @@ public:
   enum EventGroup {
     eGenericEvent,
     eStateChangeEvent,
     eTextChangeEvent,
     eMutationEvent,
     eHideEvent,
     eShowEvent,
     eCaretMoveEvent,
+    eSelectionChangeEvent,
     eTableChangeEvent
   };
 
   static const EventGroup kEventGroup = eGenericEvent;
   virtual unsigned int GetEventGroups() const
   {
     return 1U << eGenericEvent;
   }
@@ -322,20 +326,47 @@ public:
 private:
   PRInt32 mCaretOffset;
 };
 
 
 /**
  * Accessible widget selection change event.
  */
-class AccSelectionChangeEvent : public AccEvent
+class AccSelChangeEvent : public AccEvent
 {
 public:
+  enum SelChangeType {
+    eSelectionAdd,
+    eSelectionRemove
+  };
 
+  AccSelChangeEvent(nsAccessible* aWidget, nsAccessible* aItem,
+                    SelChangeType aSelChangeType);
+
+  virtual ~AccSelChangeEvent() { }
+
+  // AccEvent
+  static const EventGroup kEventGroup = eSelectionChangeEvent;
+  virtual unsigned int GetEventGroups() const
+  {
+    return AccEvent::GetEventGroups() | (1U << eSelectionChangeEvent);
+  }
+
+  // AccSelChangeEvent
+  nsAccessible* Widget() const { return mWidget; }
+
+private:
+  nsRefPtr<nsAccessible> mWidget;
+  nsRefPtr<nsAccessible> mItem;
+  SelChangeType mSelChangeType;
+  PRUint32 mPreceedingCount;
+  AccSelChangeEvent* mPackedEvent;
+
+  friend class NotificationController;
 };
 
 
 /**
  * Accessible table change event.
  */
 class AccTableChangeEvent : public AccEvent
 {

--- a/accessible/src/base/NotificationController.cpp
+++ b/accessible/src/base/NotificationController.cpp
@@ -46,16 +46,20 @@
 #include "nsTextAccessible.h"
 #include "FocusManager.h"
 #include "TextUpdater.h"
 
 #include "mozilla/dom/Element.h"
 
 using namespace mozilla::a11y;
 
+// Defines the number of selection add/remove events in the queue when they
+// aren't packed into single selection within event.
+const unsigned int kSelChangeCountToPack = 5;
+
 ////////////////////////////////////////////////////////////////////////////////
 // NotificationCollector
 ////////////////////////////////////////////////////////////////////////////////
 
 NotificationController::NotificationController(nsDocAccessible* aDocument,
                                                nsIPresShell* aPresShell) :
   mObservingState(eNotObservingRefresh), mDocument(aDocument),
   mPresShell(aPresShell)
@@ -486,16 +490,36 @@ NotificationController::CoalesceEvents()
             accEvent->mEventRule == tailEvent->mEventRule &&
             accEvent->mNode == tailEvent->mNode) {
           tailEvent->mEventRule = AccEvent::eDoNotEmit;
           return;
         }
       }
     } break; // case eRemoveDupes
 
+    case AccEvent::eCoalesceSelectionChange:
+    {
+      AccSelChangeEvent* tailSelChangeEvent = downcast_accEvent(tailEvent);
+      PRInt32 index = tail - 1;
+      for (; index >= 0; index--) {
+        AccEvent* thisEvent = mEvents[index];
+        if (thisEvent->mEventRule == tailEvent->mEventRule) {
+          AccSelChangeEvent* thisSelChangeEvent =
+            downcast_accEvent(thisEvent);
+
+          // Coalesce selection change events within same control.
+          if (tailSelChangeEvent->mWidget == thisSelChangeEvent->mWidget) {
+            CoalesceSelChangeEvents(tailSelChangeEvent, thisSelChangeEvent, index);
+            return;
+          }
+        }
+      }
+
+    } break; // eCoalesceSelectionChange
+
     default:
       break; // case eAllowDupes, eDoNotEmit
   } // switch
 }
 
 void
 NotificationController::ApplyToSiblings(PRUint32 aStart, PRUint32 aEnd,
                                         PRUint32 aEventType, nsINode* aNode,
@@ -507,16 +531,96 @@ NotificationController::ApplyToSiblings(
         accEvent->mEventRule != AccEvent::eDoNotEmit && accEvent->mNode &&
         accEvent->mNode->GetNodeParent() == aNode->GetNodeParent()) {
       accEvent->mEventRule = aEventRule;
     }
   }
 }
 
 void
+NotificationController::CoalesceSelChangeEvents(AccSelChangeEvent* aTailEvent,
+                                                AccSelChangeEvent* aThisEvent,
+                                                PRInt32 aThisIndex)
+{
+  aTailEvent->mPreceedingCount = aThisEvent->mPreceedingCount + 1;
+
+  // Pack all preceding events into single selection within event
+  // when we receive too much selection add/remove events.
+  if (aTailEvent->mPreceedingCount >= kSelChangeCountToPack) {
+    aTailEvent->mEventType = nsIAccessibleEvent::EVENT_SELECTION_WITHIN;
+    aTailEvent->mAccessible = aTailEvent->mWidget;
+    aThisEvent->mEventRule = AccEvent::eDoNotEmit;
+
+    // Do not emit any preceding selection events for same widget if they
+    // weren't coalesced yet.
+    if (aThisEvent->mEventType != nsIAccessibleEvent::EVENT_SELECTION_WITHIN) {
+      for (PRInt32 jdx = aThisIndex - 1; jdx >= 0; jdx--) {
+        AccEvent* prevEvent = mEvents[jdx];
+        if (prevEvent->mEventRule == aTailEvent->mEventRule) {
+          AccSelChangeEvent* prevSelChangeEvent =
+            downcast_accEvent(prevEvent);
+          if (prevSelChangeEvent->mWidget == aTailEvent->mWidget)
+            prevSelChangeEvent->mEventRule = AccEvent::eDoNotEmit;
+        }
+      }
+    }
+    return;
+  }
+
+  // Pack sequential selection remove and selection add events into
+  // single selection change event.
+  if (aTailEvent->mPreceedingCount == 1 &&
+      aTailEvent->mItem != aThisEvent->mItem) {
+    if (aTailEvent->mSelChangeType == AccSelChangeEvent::eSelectionAdd &&
+        aThisEvent->mSelChangeType == AccSelChangeEvent::eSelectionRemove) {
+      aThisEvent->mEventRule = AccEvent::eDoNotEmit;
+      aTailEvent->mEventType = nsIAccessibleEvent::EVENT_SELECTION;
+      aTailEvent->mPackedEvent = aThisEvent;
+      return;
+    }
+
+    if (aThisEvent->mSelChangeType == AccSelChangeEvent::eSelectionAdd &&
+        aTailEvent->mSelChangeType == AccSelChangeEvent::eSelectionRemove) {
+      aTailEvent->mEventRule = AccEvent::eDoNotEmit;
+      aThisEvent->mEventType = nsIAccessibleEvent::EVENT_SELECTION;
+      aThisEvent->mPackedEvent = aThisEvent;
+      return;
+    }
+  }
+
+  // Unpack the packed selection change event because we've got one
+  // more selection add/remove.
+  if (aThisEvent->mEventType == nsIAccessibleEvent::EVENT_SELECTION) {
+    if (aThisEvent->mPackedEvent) {
+      aThisEvent->mPackedEvent->mEventType =
+        aThisEvent->mPackedEvent->mSelChangeType == AccSelChangeEvent::eSelectionAdd ?
+          nsIAccessibleEvent::EVENT_SELECTION_ADD :
+          nsIAccessibleEvent::EVENT_SELECTION_REMOVE;
+
+      aThisEvent->mPackedEvent->mEventRule =
+        AccEvent::eCoalesceSelectionChange;
+
+      aThisEvent->mPackedEvent = nsnull;
+    }
+
+    aThisEvent->mEventType =
+      aThisEvent->mSelChangeType == AccSelChangeEvent::eSelectionAdd ?
+        nsIAccessibleEvent::EVENT_SELECTION_ADD :
+        nsIAccessibleEvent::EVENT_SELECTION_REMOVE;
+
+    return;
+  }
+
+  // Convert into selection add since control has single selection but other
+  // selection events for this control are queued.
+  if (aTailEvent->mEventType == nsIAccessibleEvent::EVENT_SELECTION)
+    aTailEvent->mEventType = nsIAccessibleEvent::EVENT_SELECTION_ADD;
+}
+
+void
 NotificationController::CoalesceTextChangeEventsFor(AccHideEvent* aTailEvent,
                                                     AccHideEvent* aThisEvent)
 {
   // XXX: we need a way to ignore SplitNode and JoinNode() when they do not
   // affect the text within the hypertext.
 
   AccTextChangeEvent* textEvent = aThisEvent->mTextChangeEvent;
   if (!textEvent)

--- a/accessible/src/base/NotificationController.h
+++ b/accessible/src/base/NotificationController.h
@@ -246,21 +246,21 @@ private:
    * @param aEventRule       the event rule to be applied
    *                         (should be eDoNotEmit or eAllowDupes)
    */
   void ApplyToSiblings(PRUint32 aStart, PRUint32 aEnd,
                        PRUint32 aEventType, nsINode* aNode,
                        AccEvent::EEventRule aEventRule);
 
   /**
-   * Do not emit one of two given reorder events fired for DOM nodes in the case
-   * when one DOM node is in parent chain of second one.
+   * Coalesce two selection change events within the same select control.
    */
-  void CoalesceReorderEventsFromSameTree(AccEvent* aAccEvent,
-                                         AccEvent* aDescendantAccEvent);
+  void CoalesceSelChangeEvents(AccSelChangeEvent* aTailEvent,
+                               AccSelChangeEvent* aThisEvent,
+                               PRInt32 aThisIndex);
 
   /**
    * Coalesce text change events caused by sibling hide events.
    */
   void CoalesceTextChangeEventsFor(AccHideEvent* aTailEvent,
                                    AccHideEvent* aThisEvent);
   void CoalesceTextChangeEventsFor(AccShowEvent* aTailEvent,
                                    AccShowEvent* aThisEvent);

--- a/accessible/src/base/nsAccessibilityService.h
+++ b/accessible/src/base/nsAccessibilityService.h
@@ -468,17 +468,17 @@ static const char kEventTypeNames[][40] 
   "minimize start",                          // EVENT_MINIMIZE_START
   "minimize end",                            // EVENT_MINIMIZE_END
   "document load complete",                  // EVENT_DOCUMENT_LOAD_COMPLETE
   "document reload",                         // EVENT_DOCUMENT_RELOAD
   "document load stopped",                   // EVENT_DOCUMENT_LOAD_STOPPED
   "document attributes changed",             // EVENT_DOCUMENT_ATTRIBUTES_CHANGED
   "document content changed",                // EVENT_DOCUMENT_CONTENT_CHANGED
   "property changed",                        // EVENT_PROPERTY_CHANGED
-  "selection changed",                       // EVENT_SELECTION_CHANGED
+  "page changed",                           // EVENT_PAGE_CHANGED
   "text attribute changed",                  // EVENT_TEXT_ATTRIBUTE_CHANGED
   "text caret moved",                        // EVENT_TEXT_CARET_MOVED
   "text changed",                            // EVENT_TEXT_CHANGED
   "text inserted",                           // EVENT_TEXT_INSERTED
   "text removed",                            // EVENT_TEXT_REMOVED
   "text updated",                            // EVENT_TEXT_UPDATED
   "text selection changed",                  // EVENT_TEXT_SELECTION_CHANGED
   "visible data changed",                    // EVENT_VISIBLE_DATA_CHANGED
@@ -509,17 +509,16 @@ static const char kEventTypeNames[][40] 
   "hyperlink number of anchors changed",     // EVENT_HYPERLINK_NUMBER_OF_ANCHORS_CHANGED
   "hyperlink selected link changed",         // EVENT_HYPERLINK_SELECTED_LINK_CHANGED
   "hypertext link activated",                // EVENT_HYPERTEXT_LINK_ACTIVATED
   "hypertext link selected",                 // EVENT_HYPERTEXT_LINK_SELECTED
   "hyperlink start index changed",           // EVENT_HYPERLINK_START_INDEX_CHANGED
   "hypertext changed",                       // EVENT_HYPERTEXT_CHANGED
   "hypertext links count changed",           // EVENT_HYPERTEXT_NLINKS_CHANGED
   "object attribute changed",                // EVENT_OBJECT_ATTRIBUTE_CHANGED
-  "page changed"                             // EVENT_PAGE_CHANGED
 };
 
 /**
  * Map nsIAccessibleRelation constants to strings. Used by
  * nsIAccessibleRetrieval::getStringRelationType() method.
  */
 static const char kRelationTypeNames[][20] = {
   "unknown",             // RELATION_NUL

--- a/accessible/src/base/nsDocAccessible.cpp
+++ b/accessible/src/base/nsDocAccessible.cpp
@@ -1037,42 +1037,33 @@ nsDocAccessible::AttributeChangedImpl(ns
   if (aAttribute == nsGkAtoms::aria_busy) {
     bool isOn = aContent->AttrValueIs(aNameSpaceID, aAttribute,
                                         nsGkAtoms::_true, eCaseMatters);
     nsRefPtr<AccEvent> event = new AccStateChangeEvent(aContent, states::BUSY, isOn);
     FireDelayedAccessibleEvent(event);
     return;
   }
 
-  if (aAttribute == nsGkAtoms::selected ||
+  // ARIA or XUL selection
+  if ((aContent->IsXUL() && aAttribute == nsGkAtoms::selected) ||
       aAttribute == nsGkAtoms::aria_selected) {
-    // ARIA or XUL selection
+    nsAccessible* item = GetAccessible(aContent);
+    nsAccessible* widget =
+      nsAccUtils::GetSelectableContainer(item, item->State());
+    if (widget) {
+      AccSelChangeEvent::SelChangeType selChangeType =
+        aContent->AttrValueIs(aNameSpaceID, aAttribute,
+                              nsGkAtoms::_true, eCaseMatters) ?
+          AccSelChangeEvent::eSelectionAdd : AccSelChangeEvent::eSelectionRemove;
 
-    nsAccessible *multiSelect =
-      nsAccUtils::GetMultiSelectableContainer(aContent);
-    // XXX: Multi selects are handled here only (bug 414302).
-    if (multiSelect) {
-      // Need to find the right event to use here, SELECTION_WITHIN would
-      // seem right but we had started using it for something else
-      FireDelayedAccessibleEvent(nsIAccessibleEvent::EVENT_SELECTION_WITHIN,
-                                 multiSelect->GetNode(),
-                                 AccEvent::eAllowDupes);
-
-      static nsIContent::AttrValuesArray strings[] =
-        {&nsGkAtoms::_empty, &nsGkAtoms::_false, nsnull};
-      if (aContent->FindAttrValueIn(kNameSpaceID_None, aAttribute,
-                                    strings, eCaseMatters) >= 0) {
-        FireDelayedAccessibleEvent(nsIAccessibleEvent::EVENT_SELECTION_REMOVE,
-                                   aContent);
-        return;
-      }
-
-      FireDelayedAccessibleEvent(nsIAccessibleEvent::EVENT_SELECTION_ADD,
-                                 aContent);
+      nsRefPtr<AccEvent> event =
+        new AccSelChangeEvent(widget, item, selChangeType);
+      FireDelayedAccessibleEvent(event);
     }
+    return;
   }
 
   if (aAttribute == nsGkAtoms::contenteditable) {
     nsRefPtr<AccEvent> editableChangeEvent =
       new AccStateChangeEvent(aContent, states::EDITABLE);
     FireDelayedAccessibleEvent(editableChangeEvent);
     return;
   }
@@ -1204,17 +1195,28 @@ void nsDocAccessible::ContentAppended(ns
 {
 }
 
 void nsDocAccessible::ContentStateChanged(nsIDocument* aDocument,
                                           nsIContent* aContent,
                                           nsEventStates aStateMask)
 {
   if (aStateMask.HasState(NS_EVENT_STATE_CHECKED)) {
-    nsHTMLSelectOptionAccessible::SelectionChangedIfOption(aContent);
+    nsAccessible* item = GetAccessible(aContent);
+    if (item) {
+      nsAccessible* widget = item->ContainerWidget();
+      if (widget && widget->IsSelect()) {
+        AccSelChangeEvent::SelChangeType selChangeType =
+          aContent->AsElement()->State().HasState(NS_EVENT_STATE_CHECKED) ?
+            AccSelChangeEvent::eSelectionAdd : AccSelChangeEvent::eSelectionRemove;
+        nsRefPtr<AccEvent> event = new AccSelChangeEvent(widget, item,
+                                                         selChangeType);
+        FireDelayedAccessibleEvent(event);
+      }
+    }
   }
 
   if (aStateMask.HasState(NS_EVENT_STATE_INVALID)) {
     nsRefPtr<AccEvent> event =
       new AccStateChangeEvent(aContent, states::INVALID, true);
     FireDelayedAccessibleEvent(event);
    }
 }

--- a/accessible/src/base/nsRootAccessible.cpp
+++ b/accessible/src/base/nsRootAccessible.cpp
@@ -468,16 +468,18 @@ nsRootAccessible::ProcessDOMEvent(nsIDOM
 
     nsRefPtr<AccEvent> accEvent =
       new AccStateChangeEvent(accessible, states::EXPANDED, isEnabled);
     nsEventShell::FireEvent(accEvent);
     return;
   }
 
   if (treeItemAccessible && eventType.EqualsLiteral("select")) {
+    // XXX: We shouldn't be based on DOM select event which doesn't provide us
+    // any context info. We should integrate into nsTreeSelection instead.
     // If multiselect tree, we should fire selectionadd or selection removed
     if (FocusMgr()->HasDOMFocus(targetNode)) {
       nsCOMPtr<nsIDOMXULMultiSelectControlElement> multiSel =
         do_QueryInterface(targetNode);
       nsAutoString selType;
       multiSel->GetSelType(selType);
       if (selType.IsEmpty() || !selType.EqualsLiteral("single")) {
         // XXX: We need to fire EVENT_SELECTION_ADD and EVENT_SELECTION_REMOVE

--- a/accessible/src/html/nsHTMLSelectAccessible.cpp
+++ b/accessible/src/html/nsHTMLSelectAccessible.cpp
@@ -411,69 +411,17 @@ nsHTMLSelectOptionAccessible::SetSelecte
 }
 
 ////////////////////////////////////////////////////////////////////////////////
 // nsHTMLSelectOptionAccessible: Widgets
 
 nsAccessible*
 nsHTMLSelectOptionAccessible::ContainerWidget() const
 {
-  if (mParent && mParent->IsListControl()) {
-    nsAccessible* grandParent = mParent->Parent();
-    if (grandParent && grandParent->IsCombobox())
-      return grandParent;
-
-    return mParent;
-  }
-  return nsnull;
-}
-
-////////////////////////////////////////////////////////////////////////////////
-// nsHTMLSelectOptionAccessible: static methods
-
-void
-nsHTMLSelectOptionAccessible::SelectionChangedIfOption(nsIContent *aPossibleOptionNode)
-{
-  if (!aPossibleOptionNode ||
-      aPossibleOptionNode->Tag() != nsGkAtoms::option ||
-      !aPossibleOptionNode->IsHTML()) {
-    return;
-  }
-
-  nsAccessible *multiSelect =
-    nsAccUtils::GetMultiSelectableContainer(aPossibleOptionNode);
-  if (!multiSelect)
-    return;
-
-  nsAccessible *option = GetAccService()->GetAccessible(aPossibleOptionNode);
-  if (!option)
-    return;
-
-
-  nsRefPtr<AccEvent> selWithinEvent =
-    new AccEvent(nsIAccessibleEvent::EVENT_SELECTION_WITHIN, multiSelect);
-
-  if (!selWithinEvent)
-    return;
-
-  option->GetDocAccessible()->FireDelayedAccessibleEvent(selWithinEvent);
-
-  PRUint64 state = option->State();
-  PRUint32 eventType;
-  if (state & states::SELECTED) {
-    eventType = nsIAccessibleEvent::EVENT_SELECTION_ADD;
-  }
-  else {
-    eventType = nsIAccessibleEvent::EVENT_SELECTION_REMOVE;
-  }
-
-  nsRefPtr<AccEvent> selAddRemoveEvent = new AccEvent(eventType, option);
-
-  if (selAddRemoveEvent)
-    option->GetDocAccessible()->FireDelayedAccessibleEvent(selAddRemoveEvent);
+  return mParent && mParent->IsListControl() ? mParent : nsnull;
 }
 
 ////////////////////////////////////////////////////////////////////////////////
 // nsHTMLSelectOptionAccessible: private methods
 
 nsIContent*
 nsHTMLSelectOptionAccessible::GetSelectState(PRUint64* aState)
 {
@@ -733,36 +681,32 @@ nsHTMLComboboxAccessible::AreItemsOperab
 {
   nsIComboboxControlFrame* comboboxFrame = do_QueryFrame(GetFrame());
   return comboboxFrame && comboboxFrame->IsDroppedDown();
 }
 
 nsAccessible*
 nsHTMLComboboxAccessible::CurrentItem()
 {
-  // No current item for collapsed combobox.
-  return SelectedOption(true);
+  return AreItemsOperable() ? mListAccessible->CurrentItem() : nsnull;
 }
 
 ////////////////////////////////////////////////////////////////////////////////
 // nsHTMLComboboxAccessible: protected
 
 nsAccessible*
-nsHTMLComboboxAccessible::SelectedOption(bool aIgnoreIfCollapsed) const
+nsHTMLComboboxAccessible::SelectedOption() const
 {
   nsIFrame* frame = GetFrame();
   nsIComboboxControlFrame* comboboxFrame = do_QueryFrame(frame);
-  if (comboboxFrame) {
-    if (aIgnoreIfCollapsed && !comboboxFrame->IsDroppedDown())
-      return nsnull;
+  if (!comboboxFrame)
+    return nsnull;
 
-    frame = comboboxFrame->GetDropDown();
-  }
-
-  nsIListControlFrame* listControlFrame = do_QueryFrame(frame);
+  nsIListControlFrame* listControlFrame =
+    do_QueryFrame(comboboxFrame->GetDropDown());
   if (listControlFrame) {
     nsCOMPtr<nsIContent> activeOptionNode = listControlFrame->GetCurrentOption();
     if (activeOptionNode) {
       nsDocAccessible* document = GetDocAccessible();
       if (document)
         return document->GetAccessible(activeOptionNode);
     }
   }
@@ -853,8 +797,24 @@ void nsHTMLComboboxListAccessible::GetBo
   if (!frame) {
     *aBoundingFrame = nsnull;
     return;
   }
 
   *aBoundingFrame = frame->GetParent();
   aBounds = (*aBoundingFrame)->GetRect();
 }
+
+////////////////////////////////////////////////////////////////////////////////
+// nsHTMLComboboxListAccessible: Widgets
+
+bool
+nsHTMLComboboxListAccessible::IsActiveWidget() const
+{
+  return mParent && mParent->IsActiveWidget();
+}
+
+bool
+nsHTMLComboboxListAccessible::AreItemsOperable() const
+{
+  return mParent && mParent->AreItemsOperable();
+}
+

--- a/accessible/src/html/nsHTMLSelectAccessible.h
+++ b/accessible/src/html/nsHTMLSelectAccessible.h
@@ -125,18 +125,16 @@ public:
                                           PRInt32 *aSetSize);
 
   // ActionAccessible
   virtual PRUint8 ActionCount();
 
   // Widgets
   virtual nsAccessible* ContainerWidget() const;
 
-  static void SelectionChangedIfOption(nsIContent *aPossibleOption);
-
 protected:
   // nsAccessible
   virtual nsIFrame* GetBoundsFrame();
 
 private:
   
   /**
    * Get Select element's accessible state
@@ -214,17 +212,17 @@ public:
 
 protected:
   // nsAccessible
   virtual void CacheChildren();
 
   /**
    * Return selected option.
    */
-  nsAccessible* SelectedOption(bool aIgnoreIfCollapsed = false) const;
+  nsAccessible* SelectedOption() const;
 
 private:
   nsRefPtr<nsHTMLComboboxListAccessible> mListAccessible;
 };
 
 /*
  * A class that represents the window that lives to the right
  * of the drop down button inside the Select. This is the window
@@ -241,11 +239,15 @@ public:
 
   // nsAccessNode
   virtual nsIFrame* GetFrame() const;
   virtual bool IsPrimaryForNode() const;
 
   // nsAccessible
   virtual PRUint64 NativeState();
   virtual void GetBoundsRect(nsRect& aBounds, nsIFrame** aBoundingFrame);
+
+  // Widgets
+  virtual bool IsActiveWidget() const;
+  virtual bool AreItemsOperable() const;
 };
 
 #endif

--- a/accessible/src/mac/mozAccessible.mm
+++ b/accessible/src/mac/mozAccessible.mm
@@ -185,19 +185,17 @@ GetNativeFromGeckoAccessible(nsIAccessib
   if (!generalAttributes) {
     // standard attributes that are shared and supported by all generic elements.
     generalAttributes = [[NSArray alloc] initWithObjects:  NSAccessibilityChildrenAttribute, 
                                                            NSAccessibilityParentAttribute,
                                                            NSAccessibilityRoleAttribute,
                                                            NSAccessibilityTitleAttribute,
                                                            NSAccessibilityValueAttribute,
                                                            NSAccessibilitySubroleAttribute,
-#if MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_4
                                                            NSAccessibilityRoleDescriptionAttribute,
-#endif
                                                            NSAccessibilityPositionAttribute,
                                                            NSAccessibilityEnabledAttribute,
                                                            NSAccessibilitySizeAttribute,
                                                            NSAccessibilityWindowAttribute,
                                                            NSAccessibilityFocusedAttribute,
                                                            NSAccessibilityHelpAttribute,
                                                            NSAccessibilityTitleUIElementAttribute,
                                                            kTopLevelUIElementAttribute,
@@ -231,20 +229,18 @@ GetNativeFromGeckoAccessible(nsIAccessib
   if ([attribute isEqualToString:NSAccessibilityPositionAttribute]) 
     return [self position];
   if ([attribute isEqualToString:NSAccessibilitySubroleAttribute])
     return [self subrole];
   if ([attribute isEqualToString:NSAccessibilityEnabledAttribute])
     return [NSNumber numberWithBool:[self isEnabled]];
   if ([attribute isEqualToString:NSAccessibilityValueAttribute])
     return [self value];
-#if MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_4
   if ([attribute isEqualToString:NSAccessibilityRoleDescriptionAttribute])
     return NSAccessibilityRoleDescription([self role], nil);
-#endif
   if ([attribute isEqualToString: (NSString*) kInstanceDescriptionAttribute])
     return [self customDescription];
   if ([attribute isEqualToString:NSAccessibilityFocusedAttribute])
     return [NSNumber numberWithBool:[self isFocused]];
   if ([attribute isEqualToString:NSAccessibilitySizeAttribute])
     return [self size];
   if ([attribute isEqualToString:NSAccessibilityWindowAttribute])
     return [self window];

--- a/accessible/src/mac/mozActionElements.mm
+++ b/accessible/src/mac/mozActionElements.mm
@@ -221,34 +221,30 @@ enum CheckboxValue {
 }
 
 - (NSArray *)accessibilityActionNames
 {
   NS_OBJC_BEGIN_TRY_ABORT_BLOCK_NIL;
 
   if ([self isEnabled]) {
     return [NSArray arrayWithObjects:NSAccessibilityPressAction,
-#if MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_4
                                      NSAccessibilityShowMenuAction,
-#endif
                                      nil];
   }
   return nil;
 
   NS_OBJC_END_TRY_ABORT_BLOCK_NIL;
 }
 
 - (NSString *)accessibilityActionDescription:(NSString *)action
 {
   NS_OBJC_BEGIN_TRY_ABORT_BLOCK_NIL;
 
-#if MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_4
   if ([action isEqualToString:NSAccessibilityShowMenuAction])
     return @"show menu";
-#endif
   return [super accessibilityActionDescription:action];
 
   NS_OBJC_END_TRY_ABORT_BLOCK_NIL;
 }
 
 - (void)accessibilityPerformAction:(NSString *)action
 {
   NS_OBJC_BEGIN_TRY_ABORT_BLOCK;

--- a/accessible/src/mac/mozTextAccessible.mm
+++ b/accessible/src/mac/mozTextAccessible.mm
@@ -44,19 +44,17 @@ extern const NSString *kTopLevelUIElemen
   static NSArray *supportedAttributes = nil;
   if (!supportedAttributes) {
     // standard attributes that are shared and supported by all generic elements.
     supportedAttributes = [[NSArray alloc] initWithObjects:NSAccessibilityParentAttribute, // required
                                                            NSAccessibilityRoleAttribute,   // required
                                                            NSAccessibilityTitleAttribute,
                                                            NSAccessibilityValueAttribute, // required
                                                            NSAccessibilitySubroleAttribute,
-#if MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_4
                                                            NSAccessibilityRoleDescriptionAttribute,
-#endif
                                                            NSAccessibilityPositionAttribute, // required
                                                            NSAccessibilitySizeAttribute, // required
                                                            NSAccessibilityWindowAttribute, // required
                                                            NSAccessibilityFocusedAttribute, // required
                                                            NSAccessibilityEnabledAttribute, // required
                                                            kTopLevelUIElementAttribute, // required (on OS X 10.4+)
                                                            kInstanceDescriptionAttribute, // required (on OS X 10.4+)
                                                            /* text-specific attributes */
@@ -244,19 +242,17 @@ extern const NSString *kTopLevelUIElemen
   static NSArray *supportedAttributes = nil;
   if (!supportedAttributes) {
     // standard attributes that are shared and supported by all generic elements.
     supportedAttributes = [[NSArray alloc] initWithObjects:NSAccessibilityParentAttribute, // required
                                                            NSAccessibilityRoleAttribute,   // required
                                                            NSAccessibilityTitleAttribute,
                                                            NSAccessibilityValueAttribute, // required
                                                            NSAccessibilityHelpAttribute,
-#if MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_4
                                                            NSAccessibilityRoleDescriptionAttribute,
-#endif
                                                            NSAccessibilityPositionAttribute, // required
                                                            NSAccessibilitySizeAttribute, // required
                                                            NSAccessibilityWindowAttribute, // required
                                                            NSAccessibilityFocusedAttribute, // required
                                                            NSAccessibilityEnabledAttribute, // required
                                                            NSAccessibilityChildrenAttribute, // required
                                                            NSAccessibilityHelpAttribute,
                                                            // NSAccessibilityExpandedAttribute, // required
@@ -276,52 +272,46 @@ extern const NSString *kTopLevelUIElemen
 }
 
 - (NSArray *)accessibilityActionNames
 {
   NS_OBJC_BEGIN_TRY_ABORT_BLOCK_NIL;
 
   if ([self isEnabled]) {
     return [NSArray arrayWithObjects:NSAccessibilityConfirmAction,
-#if MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_4
                                      NSAccessibilityShowMenuAction,
-#endif
                                      nil];
   }
   return nil;
 
   NS_OBJC_END_TRY_ABORT_BLOCK_NIL;
 }
 
 - (NSString *)accessibilityActionDescription:(NSString *)action
 {
   NS_OBJC_BEGIN_TRY_ABORT_BLOCK_NIL;
 
-#if MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_4
   if ([action isEqualToString:NSAccessibilityShowMenuAction])
     return @"show menu";
-#endif
   if ([action isEqualToString:NSAccessibilityConfirmAction])
     return @"confirm";
     
   return [super accessibilityActionDescription:action];
 
   NS_OBJC_END_TRY_ABORT_BLOCK_NIL;
 }
 
 - (void)accessibilityPerformAction:(NSString *)action
 {
   NS_OBJC_BEGIN_TRY_ABORT_BLOCK;
 
   // both the ShowMenu and Click action do the same thing.
   if ([self isEnabled]) {
-#if MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_4
     if ([action isEqualToString:NSAccessibilityShowMenuAction])
       [self showMenu];
-#endif
     if ([action isEqualToString:NSAccessibilityConfirmAction])
       [self confirm];
   }
 
   NS_OBJC_END_TRY_ABORT_BLOCK;
 }
 
 - (void)showMenu

--- a/accessible/src/msaa/nsEventMap.h
+++ b/accessible/src/msaa/nsEventMap.h
@@ -85,17 +85,17 @@ static const PRUint32 gWinEventMap[] = {
   kEVENT_WIN_UNKNOWN,                                // nsIAccessibleEvent::EVENT_MINIMIZE_START
   kEVENT_WIN_UNKNOWN,                                // nsIAccessibleEvent::EVENT_MINIMIZE_END
   IA2_EVENT_DOCUMENT_LOAD_COMPLETE,                  // nsIAccessibleEvent::EVENT_DOCUMENT_LOAD_COMPLETE
   IA2_EVENT_DOCUMENT_RELOAD,                         // nsIAccessibleEvent::EVENT_DOCUMENT_RELOAD
   IA2_EVENT_DOCUMENT_LOAD_STOPPED,                   // nsIAccessibleEvent::EVENT_DOCUMENT_LOAD_STOPPED
   IA2_EVENT_DOCUMENT_ATTRIBUTE_CHANGED,              // nsIAccessibleEvent::EVENT_DOCUMENT_ATTRIBUTES_CHANGED
   IA2_EVENT_DOCUMENT_CONTENT_CHANGED,                // nsIAccessibleEvent::EVENT_DOCUMENT_CONTENT_CHANGED
   kEVENT_WIN_UNKNOWN,                                // nsIAccessibleEvent::EVENT_PROPERTY_CHANGED
-  kEVENT_WIN_UNKNOWN,                                // nsIAccessibleEvent::EVENT_SELECTION_CHANGED
+  IA2_EVENT_PAGE_CHANGED,                            // nsIAccessibleEvent::IA2_EVENT_PAGE_CHANGED
   IA2_EVENT_TEXT_ATTRIBUTE_CHANGED,                  // nsIAccessibleEvent::EVENT_TEXT_ATTRIBUTE_CHANGED
   IA2_EVENT_TEXT_CARET_MOVED,                        // nsIAccessibleEvent::EVENT_TEXT_CARET_MOVED
   IA2_EVENT_TEXT_CHANGED,                            // nsIAccessibleEvent::EVENT_TEXT_CHANGED
   IA2_EVENT_TEXT_INSERTED,                           // nsIAccessibleEvent::EVENT_TEXT_INSERTED
   IA2_EVENT_TEXT_REMOVED,                            // nsIAccessibleEvent::EVENT_TEXT_REMOVED
   IA2_EVENT_TEXT_UPDATED,                            // nsIAccessibleEvent::EVENT_TEXT_UPDATED
   IA2_EVENT_TEXT_SELECTION_CHANGED,                  // nsIAccessibleEvent::EVENT_TEXT_SELECTION_CHANGED
   IA2_EVENT_VISIBLE_DATA_CHANGED,                    // nsIAccessibleEvent::EVENT_VISIBLE_DATA_CHANGED
@@ -126,12 +126,11 @@ static const PRUint32 gWinEventMap[] = {
   IA2_EVENT_HYPERLINK_NUMBER_OF_ANCHORS_CHANGED,     // nsIAccessibleEvent::EVENT_HYPERLINK_NUMBER_OF_ANCHORS_CHANGED
   IA2_EVENT_HYPERLINK_SELECTED_LINK_CHANGED,         // nsIAccessibleEvent::EVENT_HYPERLINK_SELECTED_LINK_CHANGED
   IA2_EVENT_HYPERTEXT_LINK_ACTIVATED,                // nsIAccessibleEvent::EVENT_HYPERTEXT_LINK_ACTIVATED
   IA2_EVENT_HYPERTEXT_LINK_SELECTED,                 // nsIAccessibleEvent::EVENT_HYPERTEXT_LINK_SELECTED
   IA2_EVENT_HYPERLINK_START_INDEX_CHANGED,           // nsIAccessibleEvent::EVENT_HYPERLINK_START_INDEX_CHANGED
   IA2_EVENT_HYPERTEXT_CHANGED,                       // nsIAccessibleEvent::EVENT_HYPERTEXT_CHANGED
   IA2_EVENT_HYPERTEXT_NLINKS_CHANGED,                // nsIAccessibleEvent::EVENT_HYPERTEXT_NLINKS_CHANGED
   IA2_EVENT_OBJECT_ATTRIBUTE_CHANGED,                // nsIAccessibleEvent::EVENT_OBJECT_ATTRIBUTE_CHANGED
-  IA2_EVENT_PAGE_CHANGED,                            // nsIAccessibleEvent::EVENT_PAGE_CHANGED
   kEVENT_LAST_ENTRY                                  // nsIAccessibleEvent::EVENT_LAST_ENTRY
 };
 

--- a/accessible/tests/mochitest/events.js
+++ b/accessible/tests/mochitest/events.js
@@ -10,17 +10,19 @@ const EVENT_FOCUS = nsIAccessibleEvent.E
 const EVENT_NAME_CHANGE = nsIAccessibleEvent.EVENT_NAME_CHANGE;
 const EVENT_MENU_START = nsIAccessibleEvent.EVENT_MENU_START;
 const EVENT_MENU_END = nsIAccessibleEvent.EVENT_MENU_END;
 const EVENT_MENUPOPUP_START = nsIAccessibleEvent.EVENT_MENUPOPUP_START;
 const EVENT_MENUPOPUP_END = nsIAccessibleEvent.EVENT_MENUPOPUP_END;
 const EVENT_OBJECT_ATTRIBUTE_CHANGED = nsIAccessibleEvent.EVENT_OBJECT_ATTRIBUTE_CHANGED;
 const EVENT_REORDER = nsIAccessibleEvent.EVENT_REORDER;
 const EVENT_SCROLLING_START = nsIAccessibleEvent.EVENT_SCROLLING_START;
+const EVENT_SELECTION = nsIAccessibleEvent.EVENT_SELECTION;
 const EVENT_SELECTION_ADD = nsIAccessibleEvent.EVENT_SELECTION_ADD;
+const EVENT_SELECTION_REMOVE = nsIAccessibleEvent.EVENT_SELECTION_REMOVE;
 const EVENT_SELECTION_WITHIN = nsIAccessibleEvent.EVENT_SELECTION_WITHIN;
 const EVENT_SHOW = nsIAccessibleEvent.EVENT_SHOW;
 const EVENT_STATE_CHANGE = nsIAccessibleEvent.EVENT_STATE_CHANGE;
 const EVENT_TEXT_ATTRIBUTE_CHANGED = nsIAccessibleEvent.EVENT_TEXT_ATTRIBUTE_CHANGED;
 const EVENT_TEXT_CARET_MOVED = nsIAccessibleEvent.EVENT_TEXT_CARET_MOVED;
 const EVENT_TEXT_INSERTED = nsIAccessibleEvent.EVENT_TEXT_INSERTED;
 const EVENT_TEXT_REMOVED = nsIAccessibleEvent.EVENT_TEXT_REMOVED;
 const EVENT_TEXT_SELECTION_CHANGED = nsIAccessibleEvent.EVENT_TEXT_SELECTION_CHANGED;

--- a/accessible/tests/mochitest/events/Makefile.in
+++ b/accessible/tests/mochitest/events/Makefile.in
@@ -77,17 +77,19 @@ include $(topsrcdir)/config/rules.mk
 		test_focus_name.html \
 		test_focus_selects.html \
 		test_focus_tabbox.xul \
 		test_focus_tree.xul \
 		test_menu.xul \
 		test_mutation.html \
 		test_mutation.xhtml \
 		test_scroll.xul \
+		test_selection_aria.html \
 		test_selection.html \
+		test_selection.xul \
 		test_statechange.html \
 		test_text_alg.html \
 		test_text.html \
 		test_textattrchange.html \
 		test_tree.xul \
 		test_valuechange.html \
 		$(NULL)
 

--- a/accessible/tests/mochitest/events/test_selection.html
+++ b/accessible/tests/mochitest/events/test_selection.html
@@ -17,78 +17,97 @@
           src="../events.js"></script>
   <script type="application/javascript"
           src="../states.js"></script>
 
   <script type="application/javascript">
     ////////////////////////////////////////////////////////////////////////////
     // Invokers
 
-    function addSelection(aNode, aOption)
-    {
-      this.DOMNode = aNode;
-      this.optionNode = aOption;
-
-      this.eventSeq = [
-        new invokerChecker(EVENT_SELECTION_WITHIN, getAccessible(this.DOMNode)),
-        new invokerChecker(EVENT_SELECTION_ADD, getAccessible(this.optionNode))
-      ];
-
-      this.invoke = function addselection_invoke() {
-        synthesizeMouse(this.optionNode, 1, 1, {});
-      };
-
-      this.getID = function addselection_getID() {
-        return prettyName(this.optionNode) + " added to selection";
-      };
-    }
-
     ////////////////////////////////////////////////////////////////////////////
     // Do tests
 
-    var gQueue = null;
+    //gA11yEventDumpToConsole = true; // debuggin
 
-    //var gA11yEventDumpID = "eventdump"; // debug stuff
-
+    var gQueue = null;
     function doTests()
     {
       gQueue = new eventQueue();
 
-      var select = document.getElementById("toppings");
-      var option = document.getElementById("onions");
-      gQueue.push(new addSelection(select, option));
+      // open combobox
+      gQueue.push(new synthClick("combobox",
+                                 new invokerChecker(EVENT_FOCUS, "cb1_item1")));
+      gQueue.push(new synthDownKey("cb1_item1",
+                                   new invokerChecker(EVENT_SELECTION, "cb1_item2")));
+
+      // closed combobox
+      gQueue.push(new synthEscapeKey("combobox",
+                                     new invokerChecker(EVENT_FOCUS, "combobox")));
+      gQueue.push(new synthDownKey("cb1_item2",
+                                   new invokerChecker(EVENT_SELECTION, "cb1_item3")));
+
+      // listbox
+      gQueue.push(new synthClick("lb1_item1",
+                                 new invokerChecker(EVENT_SELECTION, "lb1_item1")));
+      gQueue.push(new synthDownKey("lb1_item1",
+                                   new invokerChecker(EVENT_SELECTION, "lb1_item2")));
+
+      // multiselectable listbox
+      gQueue.push(new synthClick("lb2_item1",
+                                 new invokerChecker(EVENT_SELECTION, "lb2_item1")));
+      gQueue.push(new synthDownKey("lb2_item1",
+                                   new invokerChecker(EVENT_SELECTION_ADD, "lb2_item2"),
+                                   { shiftKey: true }));
+      gQueue.push(new synthUpKey("lb2_item2",
+                                 new invokerChecker(EVENT_SELECTION_REMOVE, "lb2_item2"),
+                                 { shiftKey: true }));
+      gQueue.push(new synthKey("lb2_item1", " ", { ctrlKey: true },
+                               new invokerChecker(EVENT_SELECTION_REMOVE, "lb2_item1")));
 
       gQueue.invoke(); // Will call SimpleTest.finish();
     }
 
     SimpleTest.waitForExplicitFinish();
     addA11yLoadEvent(doTests);
   </script>
 </head>
 
 <body>
 
   <a target="_blank"
-     href="https://bugzilla.mozilla.org/show_bug.cgi?id=569653"
-     title="Make selection events async">
-    Mozilla Bug 569653
+     href="https://bugzilla.mozilla.org/show_bug.cgi?id=414302"
+     title="Incorrect selection events in HTML, XUL and ARIA">
+    Mozilla Bug 414302
   </a>
 
   <p id="display"></p>
   <div id="content" style="display: none"></div>
   <pre id="test">
   </pre>
 
-  <p>Pizza</p>
-  <select id="toppings" name="toppings" multiple size=5>
-    <option value="mushrooms">mushrooms
-    <option value="greenpeppers">green peppers
-    <option value="onions" id="onions">onions
-    <option value="tomatoes">tomatoes
-    <option value="olives">olives
+  <select id="combobox">
+    <option id="cb1_item1" value="mushrooms">mushrooms
+    <option id="cb1_item2" value="greenpeppers">green peppers
+    <option id="cb1_item3" value="onions" id="onions">onions
+    <option id="cb1_item4" value="tomatoes">tomatoes
+    <option id="cb1_item5" value="olives">olives
   </select>
 
-  <div id="testContainer">
-    <iframe id="iframe"></iframe>
-  </div>
+  <select id="listbox" size=5>
+    <option id="lb1_item1" value="mushrooms">mushrooms
+    <option id="lb1_item2" value="greenpeppers">green peppers
+    <option id="lb1_item3" value="onions" id="onions">onions
+    <option id="lb1_item4" value="tomatoes">tomatoes
+    <option id="lb1_item5" value="olives">olives
+  </select>
+
+  <p>Pizza</p>
+  <select id="listbox2" multiple size=5>
+    <option id="lb2_item1" value="mushrooms">mushrooms
+    <option id="lb2_item2" value="greenpeppers">green peppers
+    <option id="lb2_item3" value="onions" id="onions">onions
+    <option id="lb2_item4" value="tomatoes">tomatoes
+    <option id="lb2_item5" value="olives">olives
+  </select>
+
   <div id="eventdump"></div>
 </body>
 </html>

new file mode 100644
--- /dev/null
+++ b/accessible/tests/mochitest/events/test_selection.xul
@@ -0,0 +1,244 @@
+<?xml version="1.0"?>
+<?xml-stylesheet href="chrome://global/skin" type="text/css"?>
+<?xml-stylesheet href="chrome://mochikit/content/tests/SimpleTest/test.css"
+                 type="text/css"?>
+
+<window xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul"
+        title="Selection event tests">
+
+  <script type="application/javascript"
+          src="chrome://mochikit/content/MochiKit/packed.js" />
+  <script type="application/javascript"
+          src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js" />
+  <script type="application/javascript"
+          src="chrome://mochikit/content/tests/SimpleTest/EventUtils.js"/>
+
+  <script type="application/javascript"
+          src="../common.js" />
+  <script type="application/javascript"
+          src="../states.js" />
+  <script type="application/javascript"
+          src="../events.js" />
+
+  <script type="application/javascript">
+    function advanceTab(aTabsID, aDirection, aNextTabID)
+    {
+      this.eventSeq = [
+        new invokerChecker(EVENT_SELECTION, aNextTabID)
+      ];
+
+      this.invoke = function advanceTab_invoke()
+      {
+        getNode(aTabsID).advanceSelectedTab(aDirection, true);
+      }
+
+      this.getID = function synthFocus_getID()
+      {
+        return "advanceTab on " + prettyName(aTabsID) + " to " + prettyName(aNextTabID);
+      }
+    }
+
+    function select4FirstItems(aID)
+    {
+      this.listboxNode = getNode(aID);
+      this.eventSeq = [
+        new invokerChecker(EVENT_SELECTION_ADD, this.listboxNode.getItemAtIndex(0)),
+        new invokerChecker(EVENT_SELECTION_ADD, this.listboxNode.getItemAtIndex(1)),
+        new invokerChecker(EVENT_SELECTION_ADD, this.listboxNode.getItemAtIndex(2)),
+        new invokerChecker(EVENT_SELECTION_ADD, this.listboxNode.getItemAtIndex(3))
+      ];
+
+      this.invoke = function select4FirstItems_invoke()
+      {
+        synthesizeKey("VK_DOWN", { shiftKey: true }); // selects two items
+        synthesizeKey("VK_DOWN", { shiftKey: true });
+        synthesizeKey("VK_DOWN", { shiftKey: true });
+      }
+
+      this.getID = function select4FirstItems_getID()
+      {
+        return "select 4 first items for " + prettyName(aID);
+      }
+    }
+
+    function unselect4FirstItems(aID)
+    {
+      this.listboxNode = getNode(aID);
+      this.eventSeq = [
+        new invokerChecker(EVENT_SELECTION_REMOVE, this.listboxNode.getItemAtIndex(3)),
+        new invokerChecker(EVENT_SELECTION_REMOVE, this.listboxNode.getItemAtIndex(2)),
+        new invokerChecker(EVENT_SELECTION_REMOVE, this.listboxNode.getItemAtIndex(1)),
+        new invokerChecker(EVENT_SELECTION_REMOVE, this.listboxNode.getItemAtIndex(0))
+      ];
+
+      this.invoke = function unselect4FirstItems_invoke()
+      {
+        synthesizeKey("VK_UP", { shiftKey: true });
+        synthesizeKey("VK_UP", { shiftKey: true });
+        synthesizeKey("VK_UP", { shiftKey: true });
+        synthesizeKey(" ", { ctrlKey: true }); // unselect first item
+      }
+
+      this.getID = function unselect4FirstItems_getID()
+      {
+        return "unselect 4 first items for " + prettyName(aID);
+      }
+    }
+
+    function selectAllItems(aID)
+    {
+      this.listboxNode = getNode(aID);
+      this.eventSeq = [
+        new invokerChecker(EVENT_SELECTION_WITHIN, getAccessible(this.listboxNode))
+      ];
+
+      this.invoke = function selectAllItems_invoke()
+      {
+        synthesizeKey("VK_END", { shiftKey: true });
+      }
+
+      this.getID = function selectAllItems_getID()
+      {
+        return "select all items for " + prettyName(aID);
+      }
+    }
+
+    function unselectAllItemsButFirst(aID)
+    {
+      this.listboxNode = getNode(aID);
+      this.eventSeq = [
+        new invokerChecker(EVENT_SELECTION_WITHIN, getAccessible(this.listboxNode))
+      ];
+
+      this.invoke = function unselectAllItemsButFirst_invoke()
+      {
+        synthesizeKey("VK_HOME", { shiftKey: true });
+      }
+
+      this.getID = function unselectAllItemsButFirst_getID()
+      {
+        return "unselect all items for " + prettyName(aID);
+      }
+    }
+
+    function unselectSelectItem(aID)
+    {
+      this.listboxNode = getNode(aID);
+      this.eventSeq = [
+        new invokerChecker(EVENT_SELECTION_REMOVE, this.listboxNode.getItemAtIndex(0)),
+        new invokerChecker(EVENT_SELECTION_ADD, this.listboxNode.getItemAtIndex(0))
+      ];
+
+      this.invoke = function unselectSelectItem_invoke()
+      {
+        synthesizeKey(" ", { ctrlKey: true }); // select item
+        synthesizeKey(" ", { ctrlKey: true }); // unselect item
+      }
+
+      this.getID = function unselectSelectItem_getID()
+      {
+        return "unselect and then select first item for " + prettyName(aID);
+      }
+    }
+
+    /**
+     * Do tests.
+     */
+    var gQueue = null;
+
+    //gA11yEventDumpToConsole = true; // debuggin
+
+    function doTests()
+    {
+      gQueue = new eventQueue();
+
+      //////////////////////////////////////////////////////////////////////////
+      // tabbox
+      gQueue.push(new advanceTab("tabs", 1, "tab3"));
+
+      //////////////////////////////////////////////////////////////////////////
+      // listbox
+      gQueue.push(new synthClick("lb1_item1",
+                                 new invokerChecker(EVENT_SELECTION, "lb1_item1")));
+      gQueue.push(new synthDownKey("lb1_item1",
+                                   new invokerChecker(EVENT_SELECTION, "lb1_item2")));
+
+      //////////////////////////////////////////////////////////////////////////
+      // multiselectable listbox
+      gQueue.push(new synthClick("lb2_item1",
+                                 new invokerChecker(EVENT_SELECTION, "lb2_item1")));
+      gQueue.push(new synthDownKey("lb2_item1",
+                                   new invokerChecker(EVENT_SELECTION_ADD, "lb2_item2"),
+                                   { shiftKey: true }));
+      gQueue.push(new synthUpKey("lb2_item2",
+                                 new invokerChecker(EVENT_SELECTION_REMOVE, "lb2_item2"),
+                                 { shiftKey: true }));
+      gQueue.push(new synthKey("lb2_item1", " ", { ctrlKey: true },
+                               new invokerChecker(EVENT_SELECTION_REMOVE, "lb2_item1")));
+
+      //////////////////////////////////////////////////////////////////////////
+      // selection event coalescence
+
+      // fire 4 selection_add events
+      gQueue.push(new select4FirstItems("listbox2"));
+      // fire 4 selection_remove events
+      gQueue.push(new unselect4FirstItems("listbox2"));
+      // fire selection_within event
+      gQueue.push(new selectAllItems("listbox2"));
+      // fire selection_within event
+      gQueue.push(new unselectAllItemsButFirst("listbox2"));
+      // fire selection_remove/add events
+      gQueue.push(new unselectSelectItem("listbox2"));
+
+      gQueue.invoke(); // Will call SimpleTest.finish();
+    }
+
+    SimpleTest.waitForExplicitFinish();
+    addA11yLoadEvent(doTests);
+  </script>
+
+  <hbox flex="1" style="overflow: auto;">
+    <body xmlns="http://www.w3.org/1999/xhtml">
+      <a target="_blank"
+         href="https://bugzilla.mozilla.org/show_bug.cgi?id=414302"
+         title="Incorrect selection events in HTML, XUL and ARIA">
+        Mozilla Bug 414302
+      </a>
+      <p id="display"></p>
+      <div id="content" style="display: none"></div>
+      <pre id="test">
+      </pre>
+    </body>
+
+    <tabbox id="tabbox" selectedIndex="1">
+      <tabs id="tabs">
+        <tab id="tab1" label="tab1"/>
+        <tab id="tab2" label="tab2"/>
+        <tab id="tab3" label="tab3"/>
+        <tab id="tab4" label="tab4"/>
+      </tabs>
+      <tabpanels>
+        <tabpanel><!-- tabpanel First elements go here --></tabpanel>
+        <tabpanel><button id="b1" label="b1"/></tabpanel>
+        <tabpanel><button id="b2" label="b2"/></tabpanel>
+        <tabpanel></tabpanel>
+      </tabpanels>
+    </tabbox>
+
+    <listbox id="listbox">
+      <listitem id="lb1_item1" label="item1"/>
+      <listitem id="lb1_item2" label="item2"/>
+    </listbox>
+
+    <listbox id="listbox2" seltype="multiple">
+      <listitem id="lb2_item1" label="item1"/>
+      <listitem id="lb2_item2" label="item2"/>
+      <listitem id="lb2_item3" label="item3"/>
+      <listitem id="lb2_item4" label="item4"/>
+      <listitem id="lb2_item5" label="item5"/>
+      <listitem id="lb2_item6" label="item6"/>
+      <listitem id="lb2_item7" label="item7"/>
+    </listbox>
+
+  </hbox>
+</window>

new file mode 100644
--- /dev/null
+++ b/accessible/tests/mochitest/events/test_selection_aria.html
@@ -0,0 +1,112 @@
+<html>
+
+<head>
+  <title>ARIA selection event testing</title>
+
+  <link rel="stylesheet" type="text/css"
+        href="chrome://mochikit/content/tests/SimpleTest/test.css" />
+
+  <script type="application/javascript"
+          src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="application/javascript"
+          src="chrome://mochikit/content/tests/SimpleTest/EventUtils.js"></script>
+
+  <script type="application/javascript"
+          src="../common.js"></script>
+  <script type="application/javascript"
+          src="../events.js"></script>
+  <script type="application/javascript"
+          src="../states.js"></script>
+
+  <script type="application/javascript">
+    ////////////////////////////////////////////////////////////////////////////
+    // Invokers
+
+    function selectTreeItem(aTreeID, aItemID)
+    {
+      this.treeNode = getNode(aTreeID);
+      this.itemNode = getNode(aItemID);
+
+      this.eventSeq = [
+        new invokerChecker(EVENT_SELECTION, aItemID)
+      ];
+
+      this.invoke = function selectTreeItem_invoke() {
+        var itemNode = this.treeNode.querySelector("*[aria-selected='true']");
+        if (itemNode)
+          itemNode.removeAttribute("aria-selected", "true");
+
+        this.itemNode.setAttribute("aria-selected", "true");
+      }
+
+      this.getID = function selectTreeItem_getID()
+      {
+        return "selectTreeItem " + prettyName(aItemID);
+      }
+    }
+
+    ////////////////////////////////////////////////////////////////////////////
+    // Do tests
+
+    var gQueue = null;
+
+    //var gA11yEventDumpID = "eventdump"; // debug stuff
+
+    function doTests()
+    {
+      gQueue = new eventQueue();
+
+      gQueue.push(new selectTreeItem("tree", "treeitem1"));
+      gQueue.push(new selectTreeItem("tree", "treeitem1a"));
+      gQueue.push(new selectTreeItem("tree", "treeitem1a1"));
+
+      gQueue.push(new selectTreeItem("tree2", "tree2item1"));
+      gQueue.push(new selectTreeItem("tree2", "tree2item1a"));
+      gQueue.push(new selectTreeItem("tree2", "tree2item1a1"));
+
+      gQueue.invoke(); // Will call SimpleTest.finish();
+    }
+
+    SimpleTest.waitForExplicitFinish();
+    addA11yLoadEvent(doTests);
+  </script>
+</head>
+
+<body>
+
+  <a target="_blank"
+     href="https://bugzilla.mozilla.org/show_bug.cgi?id=569653"
+     title="Make selection events async">
+    Mozilla Bug 569653
+  </a>
+
+  <p id="display"></p>
+  <div id="content" style="display: none"></div>
+  <pre id="test">
+  </pre>
+
+  <div id="tree" role="tree">
+    <div id="treeitem1" role="treeitem">Canada
+      <div id="treeitem1a" role="treeitem">- Ontario
+        <div id="treeitem1a1" role="treeitem">-- Toronto</div>
+      </div>
+      <div id="treeitem1b" role="treeitem">- Manitoba</div>
+    </div>
+    <div id="treeitem2" role="treeitem">Germany</div>
+    <div id="treeitem3" role="treeitem">Russia</div>
+  </div>
+
+  <div id="tree2" role="tree" aria-multiselectable="true">
+    <div id="tree2item1" role="treeitem">Canada
+      <div id="tree2item1a" role="treeitem">- Ontario
+        <div id="tree2item1a1" role="treeitem">-- Toronto</div>
+      </div>
+      <div id="tree2item1b" role="treeitem">- Manitoba</div>
+    </div>
+    <div id="tree2item2" role="treeitem">Germany</div>
+    <div id="tree2item3" role="treeitem">Russia</div>
+  </div>
+
+  <div id="eventdump"></div>
+</body>
+</html>

--- a/browser/app/profile/firefox.js
+++ b/browser/app/profile/firefox.js
@@ -49,16 +49,20 @@
 #endif
 
 pref("browser.chromeURL","chrome://browser/content/");
 pref("browser.hiddenWindowChromeURL", "chrome://browser/content/hiddenWindow.xul");
 
 // Enables some extra Extension System Logging (can reduce performance)
 pref("extensions.logging.enabled", false);
 
+// Enables strict compatibility. To be toggled in bug 698653, to make addons
+// compatibile by default.
+pref("extensions.strictCompatibility", true);
+
 // Preferences for AMO integration
 pref("extensions.getAddons.cache.enabled", true);
 pref("extensions.getAddons.maxResults", 15);
 pref("extensions.getAddons.get.url", "https://services.addons.mozilla.org/%LOCALE%/firefox/api/%API_VERSION%/search/guid:%IDS%?src=firefox&appOS=%OS%&appVersion=%VERSION%&tMain=%TIME_MAIN%&tFirstPaint=%TIME_FIRST_PAINT%&tSessionRestored=%TIME_SESSION_RESTORED%");
 pref("extensions.getAddons.search.browseURL", "https://addons.mozilla.org/%LOCALE%/firefox/search?q=%TERMS%");
 pref("extensions.getAddons.search.url", "https://services.addons.mozilla.org/%LOCALE%/firefox/api/%API_VERSION%/search/%TERMS%/all/%MAX_RESULTS%/%OS%/%VERSION%?src=firefox");
 pref("extensions.webservice.discoverURL", "https://services.addons.mozilla.org/%LOCALE%/firefox/discovery/pane/%VERSION%/%OS%");
 

--- a/browser/base/content/aboutHome.css
+++ b/browser/base/content/aboutHome.css
@@ -364,13 +364,21 @@ body[dir=rtl] #restorePreviousSession::b
   position: absolute;
   color: rgb(150,150,150);
   font-size: .8em;
   width: 100%;
   text-align: center;
   bottom: 2%;
 }
 
+#syncLinksContainer {
+  padding-top: 1em;
+}
+
+.sync-link {
+  padding: 1em;
+}
+
 @media all and (max-height: 370px) {
   #bottomSection {
     visibility: hidden;
   }
 }

--- a/browser/base/content/aboutHome.xhtml
+++ b/browser/base/content/aboutHome.xhtml
@@ -97,11 +97,15 @@
         <button id="restorePreviousSession">&historyRestoreLastSession.label;</button>
       </div>
     </div>
 
     <div id="bottomSection">
       <div id="aboutMozilla">
         <a href="http://www.mozilla.com/about/">&abouthome.aboutMozilla;</a>
       </div>
+      <div id="syncLinksContainer">
+        <a href="javascript:void(0);" class="sync-link" id="setupSyncLink">&abouthome.syncSetup.label;</a>
+        <a href="javascript:void(0);" class="sync-link" id="pairDeviceLink">&abouthome.pairDevice.label;</a>
+      </div>
     </div>
   </body>
 </html>

--- a/browser/base/content/browser-sets.inc
+++ b/browser/base/content/browser-sets.inc
@@ -140,22 +140,18 @@
              oncommand="PlacesCommandHook.showPlacesOrganizer('AllBookmarks');"/>
     <command id="Browser:ShowAllHistory"
              oncommand="PlacesCommandHook.showPlacesOrganizer('History');"/>
   </commandset>
 
   <commandset id="inspectorCommands">
     <command id="Inspector:Inspect"
              oncommand="InspectorUI.toggleInspection();"/>
-    <command id="Inspector:Previous"
-             oncommand="InspectorUI.inspectPrevious();"
-             disabled="true"/>
-    <command id="Inspector:Next"
-             oncommand="InspectorUI.inspectNext();"
-             disabled="true"/>
+    <command id="Inspector:Sidebar"
+             oncommand="InspectorUI.toggleSidebar();"/>
   </commandset>
 
   <broadcasterset id="mainBroadcasterSet">
     <broadcaster id="viewBookmarksSidebar" autoCheck="false" label="&bookmarksButton.label;"
                  type="checkbox" group="sidebar" sidebarurl="chrome://browser/content/bookmarks/bookmarksPanel.xul"
                  oncommand="toggleSidebar('viewBookmarksSidebar');"/>
 
     <!-- for both places and non-places, the sidebar lives at

--- a/browser/base/content/browser-syncui.js
+++ b/browser/base/content/browser-syncui.js
@@ -206,16 +206,34 @@ let gSyncUI = {
   },
 
   onLoginFinish: function SUI_onLoginFinish() {
     // Clear out any login failure notifications
     let title = this._stringBundle.GetStringFromName("error.login.title");
     this.clearError(title);
   },
 
+  // Set visibility of "Setup Sync" link
+  showSetupSyncAboutHome: function SUI_showSetupSyncAboutHome(toShow) {
+    let browsers = gBrowser.browsers;
+    for (let i = 0; i < browsers.length; i++) {
+      let b = browsers[i];
+      if ("about:home" == b.currentURI.spec) {
+        b.contentDocument.getElementById("setupSyncLink").hidden = !toShow;
+      }
+    }
+  },
+
+  onSetupComplete: function SUI_onSetupComplete() {
+    // Remove "setup sync" link in about:home if it is open. 
+    this.showSetupSyncAboutHome(false);
+
+    onLoginFinish();
+  },
+
   onLoginError: function SUI_onLoginError() {
     // if login fails, any other notifications are essentially moot
     Weave.Notifications.removeAll();
 
     // if we haven't set up the client, don't show errors
     if (this._needsSetup()) {
       this.updateUI();
       return;
@@ -250,16 +268,18 @@ let gSyncUI = {
   },
 
   onLogout: function SUI_onLogout() {
     this.updateUI();
   },
 
   onStartOver: function SUI_onStartOver() {
     this.clearError();
+    // Make "setup sync" link visible in about:home if it is open. 
+    this.showSetupSyncAboutHome(true);
   },
 
   onQuotaNotice: function onQuotaNotice(subject, data) {
     let title = this._stringBundle.GetStringFromName("warning.sync.quota.label");
     let description = this._stringBundle.GetStringFromName("warning.sync.quota.description");
     let buttons = [];
     buttons.push(new Weave.NotificationButton(
       this._stringBundle.GetStringFromName("error.sync.viewQuotaButton.label"),
@@ -286,26 +306,50 @@ let gSyncUI = {
     if (this._needsSetup())
       this.openSetup();
     else
       this.doSync();
   },
 
   //XXXzpao should be part of syncCommon.js - which we might want to make a module...
   //        To be fixed in a followup (bug 583366)
-  openSetup: function SUI_openSetup() {
+
+  /**
+   * Invoke the Sync setup wizard.
+   *
+   * @param wizardType
+   *        Indicates type of wizard to launch:
+   *          null    -- regular set up wizard
+   *          "pair"  -- pair a device first
+   *          "reset" -- reset sync
+   */
+
+  openSetup: function SUI_openSetup(wizardType) {
     let win = Services.wm.getMostRecentWindow("Weave:AccountSetup");
     if (win)
       win.focus();
     else {
       window.openDialog("chrome://browser/content/syncSetup.xul",
-                        "weaveSetup", "centerscreen,chrome,resizable=no");
+                        "weaveSetup", "centerscreen,chrome,resizable=no",
+                        wizardType);
     }
   },
 
+  openAddDevice: function () {
+    if (!Weave.Utils.ensureMPUnlocked())
+      return;
+
+    let win = Services.wm.getMostRecentWindow("Sync:AddDevice");
+    if (win)
+      win.focus();
+    else
+      window.openDialog("chrome://browser/content/syncAddDevice.xul",
+                        "syncAddDevice", "centerscreen,chrome,resizable=no");
+  },
+
   openQuotaDialog: function SUI_openQuotaDialog() {
     let win = Services.wm.getMostRecentWindow("Sync:ViewQuota");
     if (win)
       win.focus();
     else
       Services.ww.activeWindow.openDialog(
         "chrome://browser/content/syncQuota.xul", "",
         "centerscreen,chrome,dialog,modal");
@@ -457,17 +501,17 @@ let gSyncUI = {
         break;
       case "weave:service:sync:delayed":
         this.onSyncDelay();
         break;
       case "weave:service:quota:remaining":
         this.onQuotaNotice();
         break;
       case "weave:service:setup-complete":
-        this.onLoginFinish();
+        this.onSetupComplete();
         break;
       case "weave:service:login:start":
         this.onActivityStart();
         break;
       case "weave:service:login:finish":
         this.onLoginFinish();
         break;
       case "weave:ui:login:error":

--- a/browser/base/content/browser.js
+++ b/browser/base/content/browser.js
@@ -2670,25 +2670,31 @@ function PageProxyClickHandler(aEvent)
  *  to the DOM for unprivileged pages.
  */
 function BrowserOnAboutPageLoad(document) {
   if (/^about:home$/i.test(document.documentURI)) {
     let ss = Components.classes["@mozilla.org/browser/sessionstore;1"].
              getService(Components.interfaces.nsISessionStore);
     if (!ss.canRestoreLastSession)
       document.getElementById("sessionRestoreContainer").hidden = true;
+    // Sync-related links
+    if (Services.prefs.prefHasUserValue("services.sync.username")) {
+      document.getElementById("setupSyncLink").hidden = true;
+    }
   }
 }
 
 /**
  * Handle command events bubbling up from error page content
  */
 function BrowserOnClick(event) {
     // Don't trust synthetic events
-    if (!event.isTrusted || event.target.localName != "button")
+    if (!event.isTrusted ||
+        (event.target.localName != "button" &&
+         event.target.className != "sync-link"))
       return;
 
     var ot = event.originalTarget;
     var errorDoc = ot.ownerDocument;
 
     // If the event came from an ssl error page, it is probably either the "Add
     // Exception…" or "Get me out of here!" button
     if (/^about:certerror/.test(errorDoc.documentURI)) {
@@ -2808,16 +2814,26 @@ function BrowserOnClick(event) {
     else if (/^about:home$/i.test(errorDoc.documentURI)) {
       if (ot == errorDoc.getElementById("restorePreviousSession")) {
         let ss = Cc["@mozilla.org/browser/sessionstore;1"].
                  getService(Ci.nsISessionStore);
         if (ss.canRestoreLastSession)
           ss.restoreLastSession();
         errorDoc.getElementById("sessionRestoreContainer").hidden = true;
       }
+      else if (ot == errorDoc.getElementById("pairDeviceLink")) {
+        if (Services.prefs.prefHasUserValue("services.sync.username")) {
+          gSyncUI.openAddDevice();
+        } else {
+          gSyncUI.openSetup("pair");
+        }
+      }
+      else if (ot == errorDoc.getElementById("setupSyncLink")) {
+        gSyncUI.openSetup(null);
+      }
     }
 }
 
 /**
  * Re-direct the browser to a known-safe page.  This function is
  * used when, for example, the user browses to a known malware page
  * and is presented with about:blocked.  The "Get me out of here!"
  * button should take the user to the default start page so that even
@@ -3887,22 +3903,39 @@ var FullScreen = {
       this._isAnimating = false;
       // This is needed if they use the context menu to quit fullscreen
       this._isPopupOpen = false;
 
       this.cleanup();
     }
   },
 
+  exitDomFullScreen : function(e) {
+    document.mozCancelFullScreen();
+  },
+
   enterDomFullScreen : function(event) {
-    if (!document.mozFullScreen) {
+    // We receive "mozfullscreenchange" events for each subdocument which
+    // is an ancestor of the document containing the element which requested
+    // full-screen. Only add listeners and show warning etc when the event we
+    // receive is targeted at the chrome document, i.e. only once every time
+    // we enter DOM full-screen mode.
+    if (!document.mozFullScreen || event.target.ownerDocument != document) {
       return;
     }
     this.showWarning(true);
 
+    // Exit DOM full-screen mode upon open, close, or change tab.
+    gBrowser.tabContainer.addEventListener("TabOpen", this.exitDomFullScreen);
+    gBrowser.tabContainer.addEventListener("TabClose", this.exitDomFullScreen);
+    gBrowser.tabContainer.addEventListener("TabSelect", this.exitDomFullScreen);
+
+    // Exit DOM full-screen mode when the browser window loses focus (ALT+TAB, etc).
+    window.addEventListener("deactivate", this.exitDomFullScreen, true);
+
     // Cancel any "hide the toolbar" animation which is in progress, and make
     // the toolbar hide immediately.
     clearInterval(this._animationInterval);
     clearTimeout(this._animationTimeout);
     this._isAnimating = false;
     this._shouldAnimate = false;
     this.mouseoverToggle(false);
 
@@ -3925,16 +3958,20 @@ var FullScreen = {
       gPrefService.removeObserver("browser.fullscreen", this);
 
       let fullScrToggler = document.getElementById("fullscr-toggler");
       if (fullScrToggler) {
         fullScrToggler.removeEventListener("mouseover", this._expandCallback, false);
         fullScrToggler.removeEventListener("dragenter", this._expandCallback, false);
       }
       this.cancelWarning();
+      gBrowser.tabContainer.removeEventListener("TabOpen", this.exitDomFullScreen);
+      gBrowser.tabContainer.removeEventListener("TabClose", this.exitDomFullScreen);
+      gBrowser.tabContainer.removeEventListener("TabSelect", this.exitDomFullScreen);
+      window.removeEventListener("deactivate", this.exitDomFullScreen, true);
     }
   },
 
   observe: function(aSubject, aTopic, aData)
   {
     if (aData == "browser.fullscreen.autohide") {
       if (gPrefService.getBoolPref("browser.fullscreen.autohide")) {
         gBrowser.mPanelContainer.addEventListener("mousemove",
@@ -8895,24 +8932,26 @@ function toggleAddonBar() {
   let addonBar = document.getElementById("addon-bar");
   setToolbarVisibility(addonBar, addonBar.collapsed);
 }
 
 var Scratchpad = {
   prefEnabledName: "devtools.scratchpad.enabled",
 
   openScratchpad: function SP_openScratchpad() {
-    const SCRATCHPAD_WINDOW_URL = "chrome://browser/content/scratchpad.xul";
-    const SCRATCHPAD_WINDOW_FEATURES = "chrome,titlebar,toolbar,centerscreen,resizable,dialog=no";
-
-    return Services.ww.openWindow(null, SCRATCHPAD_WINDOW_URL, "_blank",
-                                  SCRATCHPAD_WINDOW_FEATURES, null);
-  },
+    return this.ScratchpadManager.openScratchpad();
+  }
 };
 
+XPCOMUtils.defineLazyGetter(Scratchpad, "ScratchpadManager", function() {
+  let tmp = {};
+  Cu.import("resource:///modules/devtools/scratchpad-manager.jsm", tmp);
+  return tmp.ScratchpadManager;
+});
+
 
 XPCOMUtils.defineLazyGetter(window, "gShowPageResizers", function () {
 #ifdef XP_WIN
   // Only show resizers on Windows 2000 and XP
   let sysInfo = Components.classes["@mozilla.org/system-info;1"]
                           .getService(Components.interfaces.nsIPropertyBag2);
   return parseFloat(sysInfo.getProperty("version")) < 6;
 #else

--- a/browser/base/content/browser.xul
+++ b/browser/base/content/browser.xul
@@ -961,16 +961,22 @@
       <tabbrowser id="content" disablehistory="true"
                   flex="1" contenttooltip="aHTMLTooltip"
                   tabcontainer="tabbrowser-tabs"
                   contentcontextmenu="contentAreaContextMenu"
                   autocompletepopup="PopupAutoComplete"
                   onclick="return contentAreaClick(event, false);"/>
       <statuspanel id="statusbar-display" inactive="true"/>
     </vbox>
+    <splitter id="devtools-side-splitter" hidden="true"/>
+    <vbox id="devtools-sidebar-box" hidden="true" flex="1"
+          style="min-width: 18em; width: 22em; max-width: 42em;" persist="width">
+      <toolbar id="devtools-sidebar-toolbar" nowindowdrag="true"/>
+      <deck id="devtools-sidebar-deck" flex="1"/>
+    </vbox>
     <vbox id="browser-border-end" hidden="true" layer="true"/>
   </hbox>
 
   <hbox id="full-screen-warning-container" hidden="true" fadeout="true">
     <hbox style="min-width: 100%;" pack="center"> <!-- Inner hbox needed due to bug 579776. -->
       <hbox id="full-screen-warning-message">
         <description id="full-screen-warning-text" value="&domFullScreenWarning.label;"></description>
       </hbox>
@@ -982,26 +988,40 @@
              nowindowdrag="true"
              hidden="true">
       <vbox flex="1">
         <resizer id="inspector-top-resizer" flex="1" 
                  class="inspector-resizer"
                  dir="top" disabled="true"
                  element="inspector-tree-box"/>
         <hbox>
+#ifdef XP_MACOSX
+          <toolbarbutton id="highlighter-closebutton"
+                         oncommand="InspectorUI.closeInspectorUI(false);"
+                         tooltiptext="&inspectCloseButton.tooltiptext;"/>
+#endif
           <toolbarbutton id="inspector-inspect-toolbutton"
                          label="&inspectButton.label;"
                          accesskey="&inspectButton.accesskey;"
                          command="Inspector:Inspect"/>
           <arrowscrollbox id="inspector-breadcrumbs"
                           flex="1" orient="horizontal"
                           clicktoscroll="true"/>
           <hbox id="inspector-tools">
+            <toolbarbutton id="inspector-style-button"
+                           label="&inspectStyleButton.label;"
+                           accesskey="&inspectStyleButton.accesskey;"
+                           command="Inspector:Sidebar"/>
             <!-- registered tools go here -->
           </hbox>
+#ifndef XP_MACOSX
+          <toolbarbutton id="highlighter-closebutton"
+                         oncommand="InspectorUI.closeInspectorUI(false);"
+                         tooltiptext="&inspectCloseButton.tooltiptext;"/>
+#endif
           <resizer id="inspector-end-resizer"
                    class="inspector-resizer"
                    dir="top" disabled="true"
                    element="inspector-tree-box"/>
         </hbox>
       </vbox>
     </toolbar>
     <toolbar id="addon-bar"

--- a/browser/base/content/highlighter.css
+++ b/browser/base/content/highlighter.css
@@ -25,24 +25,27 @@
 #highlighter-veil-rightbox {
   -moz-box-flex: 1;
 }
 
 #highlighter-veil-middlebox:-moz-locale-dir(rtl) {
   -moz-box-direction: reverse;
 }
 
-#highlighter-close-button {
-  position: absolute;
-  pointer-events: auto;
-  z-index: 1;
+.inspector-breadcrumbs-button {
+  direction: ltr;
 }
 
-.inspector-breadcrumbs-button {
-  direction: ltr;
+.inspector-resizer {
+  display: none;
+}
+
+#inspector-toolbar[treepanel-open] > vbox > #inspector-top-resizer,
+#inspector-toolbar[treepanel-open] > vbox > hbox > #inspector-end-resizer {
+  display: -moz-box;
 }
 
 /*
  * Node Infobar
  */
 
 #highlighter-nodeinfobar-container {
   position: absolute;

--- a/browser/base/content/nsContextMenu.js
+++ b/browser/base/content/nsContextMenu.js
@@ -272,19 +272,20 @@ nsContextMenu.prototype = {
     }
 
     // Reload image depends on an image that's not fully loaded
     this.showItem("context-reloadimage", (this.onImage && !this.onCompletedImage));
 
     // View image depends on having an image that's not standalone
     // (or is in a frame), or a canvas.
     this.showItem("context-viewimage", (this.onImage &&
-                  (!this.onStandaloneImage || this.inFrame)) || this.onCanvas);
+                  (!this.inSyntheticDoc || this.inFrame)) || this.onCanvas);
 
-    this.showItem("context-viewvideo", this.onVideo);
+    // View video depends on not having a standalone video.
+    this.showItem("context-viewvideo", this.onVideo && (!this.inSyntheticDoc || this.inFrame));
     this.setItemAttr("context-viewvideo",  "disabled", !this.mediaURL);
 
     // View background image depends on whether there is one.
     this.showItem("context-viewbgimage", shouldShow && !this._hasMultipleBGImages);
     this.showItem("context-sep-viewbgimage", shouldShow && !this._hasMultipleBGImages);
     document.getElementById("context-viewbgimage")
             .disabled = !this.hasBGImage;
 
@@ -461,32 +462,32 @@ nsContextMenu.prototype = {
       this.shouldDisplay = false;
       return;
     }
 
     // Initialize contextual info.
     this.onImage           = false;
     this.onLoadedImage     = false;
     this.onCompletedImage  = false;
-    this.onStandaloneImage = false;
     this.onCanvas          = false;
     this.onVideo           = false;
     this.onAudio           = false;
     this.onTextInput       = false;
     this.onKeywordField    = false;
     this.mediaURL          = "";
     this.onLink            = false;
     this.onMailtoLink      = false;
     this.onSaveableLink    = false;
     this.link              = null;
     this.linkURL           = "";
     this.linkURI           = null;
     this.linkProtocol      = "";
     this.onMathML          = false;
     this.inFrame           = false;
+    this.inSyntheticDoc    = false;
     this.hasBGImage        = false;
     this.bgImageURL        = "";
     this.onEditableArea    = false;
     this.isDesignMode      = false;
 
     // Clear any old spellchecking items from the menu, this used to
     // be in the menu hiding code but wasn't getting called in all
     // situations. Here, we can ensure it gets cleaned up any time the
@@ -495,33 +496,33 @@ nsContextMenu.prototype = {
     InlineSpellCheckerUI.clearSuggestionsFromMenu();
     InlineSpellCheckerUI.clearDictionaryListFromMenu();
 
     InlineSpellCheckerUI.uninit();
 
     // Remember the node that was clicked.
     this.target = aNode;
 
+    // Check if we are in a synthetic document (stand alone image, video, etc.).
+    this.inSyntheticDoc =  this.target.ownerDocument.mozSyntheticDocument;
     // First, do checks for nodes that never have children.
     if (this.target.nodeType == Node.ELEMENT_NODE) {
       // See if the user clicked on an image.
       if (this.target instanceof Ci.nsIImageLoadingContent &&
           this.target.currentURI) {
         this.onImage = true;
 
         var request =
           this.target.getRequest(Ci.nsIImageLoadingContent.CURRENT_REQUEST);
         if (request && (request.imageStatus & request.STATUS_SIZE_AVAILABLE))
           this.onLoadedImage = true;
         if (request && (request.imageStatus & request.STATUS_LOAD_COMPLETE))
           this.onCompletedImage = true;
 
         this.mediaURL = this.target.currentURI.spec;
-        if (this.target.ownerDocument instanceof ImageDocument)
-          this.onStandaloneImage = true;
       }
       else if (this.target instanceof HTMLCanvasElement) {
         this.onCanvas = true;
       }
       else if (this.target instanceof HTMLVideoElement) {
         this.onVideo = true;
         this.mediaURL = this.target.currentSrc || this.target.src;
       }