Bug 545812 - Dispatch mozfullscreenchange event when we change full-screen mode. r=smaug

content/base/src/nsDocument.cpp

@@ -8485,9 +8485,39 @@ GetRootDocument(nsIDocument* aDoc)
   return rpc->Document();
 }
 
+class nsDispatchFullScreenChange : public nsRunnable
+{
+public:
+  nsDispatchFullScreenChange(nsIDocument *aDoc)
+    : mDoc(aDoc)
+  {
+    mTarget = aDoc->GetFullScreenElement();
+    if (!mTarget) {
+      mTarget = aDoc;
+    }
+  }
+
+  NS_IMETHOD Run()
+  {
+    nsContentUtils::DispatchTrustedEvent(mDoc,
+                                         mTarget,
+                                         NS_LITERAL_STRING("mozfullscreenchange"),
+                                         PR_TRUE,
+                                         PR_FALSE);
+    return NS_OK;
+  }
+
+  nsCOMPtr<nsIDocument> mDoc;
+  nsCOMPtr<nsISupports> mTarget;
+};
+
 void
 nsDocument::UpdateFullScreenStatus(PRBool aIsFullScreen)
 {
+  if (mIsFullScreen != aIsFullScreen) {
+    nsCOMPtr<nsIRunnable> event(new nsDispatchFullScreenChange(this));
+    NS_DispatchToCurrentThread(event);
+  }
   mIsFullScreen = aIsFullScreen;
   if (!mIsFullScreen) {
     // Full-screen is being turned off. Reset the full-screen element, to

content/base/src/nsGkAtomList.h

@@ -583,6 +583,7 @@ GK_ATOM(mouseout, "mouseout")
 GK_ATOM(mouseover, "mouseover")
 GK_ATOM(mousethrough, "mousethrough")
 GK_ATOM(mouseup, "mouseup")
+GK_ATOM(mozfullscreenchange, "mozfullscreenchange")
 GK_ATOM(moz_opaque, "moz-opaque")
 GK_ATOM(moz_action_hint, "mozactionhint")
 GK_ATOM(x_moz_errormessage, "x-moz-errormessage")
@@ -695,6 +696,7 @@ GK_ATOM(onMozMouseHittest, "onMozMouseHittest")
 GK_ATOM(onmouseup, "onmouseup")
 GK_ATOM(onMozAfterPaint, "onMozAfterPaint")
 GK_ATOM(onMozBeforePaint, "onMozBeforePaint")
+GK_ATOM(onmozfullscreenchange, "onmozfullscreenchange")
 GK_ATOM(onMozMousePixelScroll, "onMozMousePixelScroll")
 GK_ATOM(onMozScrolledAreaChanged, "onMozScrolledAreaChanged")
 GK_ATOM(ononline, "ononline")

content/events/public/nsEventNameList.h

@@ -243,6 +243,10 @@ EVENT(mouseup,
       NS_MOUSE_BUTTON_UP,
       EventNameType_All,
       NS_MOUSE_EVENT)
+EVENT(mozfullscreenchange,
+      NS_FULLSCREENCHANGE,
+      EventNameType_HTML,
+      NS_EVENT_NULL)
 // Not supported yet; probably never because "wheel" is a better idea.
 // EVENT(mousewheel)
 EVENT(pause,

content/events/src/nsDOMEvent.cpp

@@ -92,6 +92,7 @@ static const char* const sEventNames[] = {
   "MozAfterPaint",
   "MozBeforePaint",
   "MozBeforeResize",
+  "mozfullscreenchange",
   "MozSwipeGesture",
   "MozMagnifyGestureStart",
   "MozMagnifyGestureUpdate",
@@ -1366,6 +1367,8 @@ const char* nsDOMEvent::GetEventName(PRUint32 aEventType)
     return sEventNames[eDOMEvents_devicemotion];
   case NS_DEVICE_ORIENTATION:
     return sEventNames[eDOMEvents_deviceorientation];
+  case NS_FULLSCREENCHANGE:
+    return sEventNames[eDOMEvents_mozfullscreenchange];
   default:
     break;
   }

content/events/src/nsDOMEvent.h

@@ -177,6 +177,7 @@ public:
     eDOMEvents_afterpaint,
     eDOMEvents_beforepaint,
     eDOMEvents_beforeresize,
+    eDOMEvents_mozfullscreenchange,
     eDOMEvents_MozSwipeGesture,
     eDOMEvents_MozMagnifyGestureStart,
     eDOMEvents_MozMagnifyGestureUpdate,

dom/interfaces/core/nsIInlineEventHandlers.idl

@@ -80,6 +80,7 @@ interface nsIInlineEventHandlers : nsISupports
   [implicit_jscontext] attribute jsval onmouseup;
   // Not supported yet
   // [implicit_jscontext] attribute jsval onmousewheel;
+  [implicit_jscontext] attribute jsval onmozfullscreenchange;
   [implicit_jscontext] attribute jsval onpause;
   [implicit_jscontext] attribute jsval onplay;
   [implicit_jscontext] attribute jsval onplaying;

widget/public/nsGUIEvent.h

@@ -541,6 +541,10 @@ class nsHashKey;
 
 #define NS_SHOW_EVENT                5000
 
+// Fullscreen DOM API
+#define NS_FULL_SCREEN_START         5100
+#define NS_FULLSCREENCHANGE          (NS_FULL_SCREEN_START)
+
 /**
  * Return status for event processors, nsEventStatus, is defined in
  * nsEvent.h.