Reland r165710 "Replace RenderFullScreen with top layer"

Source/core/dom/FullscreenElementStack.cpp

Index: Source/core/dom/FullscreenElementStack.cpp
diff --git a/Source/core/dom/FullscreenElementStack.cpp b/Source/core/dom/FullscreenElementStack.cpp
index 03f1982866201014a82f54c660e3f7cd74725317..56e7e037b6dccac6c85a688aeac8a1139015cee6 100644
--- a/Source/core/dom/FullscreenElementStack.cpp
+++ b/Source/core/dom/FullscreenElementStack.cpp
@@ -37,7 +37,6 @@
 #include "core/html/HTMLFrameOwnerElement.h"
 #include "core/page/Chrome.h"
 #include "core/page/ChromeClient.h"
-#include "core/rendering/RenderFullScreen.h"
 #include "platform/UserGestureIndicator.h"
 
 namespace WebCore {
@@ -100,7 +99,6 @@ bool FullscreenElementStack::isFullScreen(Document* document)
 FullscreenElementStack::FullscreenElementStack(Document* document)
     : DocumentLifecycleObserver(document)
     , m_areKeysEnabledInFullScreen(false)
-    , m_fullScreenRenderer(0)
     , m_fullScreenChangeDelayTimer(this, &FullscreenElementStack::fullScreenChangeDelayTimerFired)
 {
     document->setHasFullscreenElementStack();
@@ -119,9 +117,6 @@ void FullscreenElementStack::documentWasDetached()
 {
     m_fullScreenChangeEventTargetQueue.clear();
     m_fullScreenErrorEventTargetQueue.clear();
-
-    if (m_fullScreenRenderer)
-        setFullScreenRenderer(0);
 }
 
 void FullscreenElementStack::documentWasDisposed()
@@ -264,6 +259,12 @@ void FullscreenElementStack::webkitCancelFullScreen()
     Vector<RefPtr<Element> > replacementFullscreenElementStack;
     replacementFullscreenElementStack.append(fullscreenElementFrom(document()->topDocument()));
     FullscreenElementStack* topFullscreenElementStack = from(document()->topDocument());
+    // FIXME: This will remove a modal full screen dialog from the top layer.
+    // We shouldn't have separate vectors for full screen element stack and top layer. http://crbug.com/336704
+    Vector<RefPtr<Element> >::iterator end = topFullscreenElementStack->m_fullScreenElementStack.end();
+    for (Vector<RefPtr<Element> >::iterator iter = topFullscreenElementStack->m_fullScreenElementStack.begin(); iter + 1 < end; ++iter) {
+        topFullscreenElementStack->document()->removeFromTopLayer(iter->get());
+    }
     topFullscreenElementStack->m_fullScreenElementStack.swap(replacementFullscreenElementStack);
     topFullscreenElementStack->webkitExitFullscreen();
 }
@@ -358,25 +359,8 @@ void FullscreenElementStack::webkitWillEnterFullScreenForElement(Element* elemen
     ASSERT(document()->settings()); // If we're active we must have settings.
     ASSERT(document()->settings()->fullScreenEnabled());
 
-    if (m_fullScreenRenderer)
-        m_fullScreenRenderer->unwrapRenderer();
-
     m_fullScreenElement = element;
-
-    // Create a placeholder block for a the full-screen element, to keep the page from reflowing
-    // when the element is removed from the normal flow. Only do this for a RenderBox, as only
-    // a box will have a frameRect. The placeholder will be created in setFullScreenRenderer()
-    // during layout.
-    RenderObject* renderer = m_fullScreenElement->renderer();
-    bool shouldCreatePlaceholder = renderer && renderer->isBox();
-    if (shouldCreatePlaceholder) {
-        m_savedPlaceholderFrameRect = toRenderBox(renderer)->frameRect();
-        m_savedPlaceholderRenderStyle = RenderStyle::clone(renderer->style());
-    }
-
-    if (m_fullScreenElement != document()->documentElement())
-        RenderFullScreen::wrapRenderer(renderer, renderer ? renderer->parent() : 0, document());
-
+    document()->addToTopLayer(element);
     m_fullScreenElement->setContainsFullScreenElementOnAncestorsCrossingFrameBoundaries(true);
 
     document()->recalcStyle(Force);
@@ -403,6 +387,7 @@ void FullscreenElementStack::webkitWillExitFullScreenForElement(Element*)
     if (!document()->isActive())
         return;
 
+    document()->removeFromTopLayer(m_fullScreenElement.get());
     m_fullScreenElement->willStopBeingFullscreenElement();
 }
 
@@ -418,9 +403,6 @@ void FullscreenElementStack::webkitDidExitFullScreenForElement(Element*)
 
     m_areKeysEnabledInFullScreen = false;
 
-    if (m_fullScreenRenderer)
-        m_fullScreenRenderer->unwrapRenderer();
-
     m_fullScreenElement = 0;
     document()->setNeedsStyleRecalc();
 
@@ -433,30 +415,6 @@ void FullscreenElementStack::webkitDidExitFullScreenForElement(Element*)
     from(exitingDocument)->m_fullScreenChangeDelayTimer.startOneShot(0);
 }
 
-void FullscreenElementStack::setFullScreenRenderer(RenderFullScreen* renderer)
-{
-    if (renderer == m_fullScreenRenderer)
-        return;
-
-    if (renderer && m_savedPlaceholderRenderStyle) {
-        renderer->createPlaceholder(m_savedPlaceholderRenderStyle.release(), m_savedPlaceholderFrameRect);
-    } else if (renderer && m_fullScreenRenderer && m_fullScreenRenderer->placeholder()) {
-        RenderBlock* placeholder = m_fullScreenRenderer->placeholder();
-        renderer->createPlaceholder(RenderStyle::clone(placeholder->style()), placeholder->frameRect());
-    }
-
-    if (m_fullScreenRenderer)
-        m_fullScreenRenderer->destroy();
-    ASSERT(!m_fullScreenRenderer);
-
-    m_fullScreenRenderer = renderer;
-}
-
-void FullscreenElementStack::fullScreenRendererDestroyed()
-{
-    m_fullScreenRenderer = 0;
-}
-
 void FullscreenElementStack::fullScreenChangeDelayTimerFired(Timer<FullscreenElementStack>*)
 {
     // Since we dispatch events in this function, it's possible that the
@@ -528,6 +486,9 @@ void FullscreenElementStack::removeFullScreenElementOfSubtree(Node* node, bool a
 
 void FullscreenElementStack::clearFullscreenElementStack()
 {
+    Vector<RefPtr<Element> >::iterator end = m_fullScreenElementStack.end();
+    for (Vector<RefPtr<Element> >::iterator iter = m_fullScreenElementStack.begin(); iter != end; ++iter)
+        document()->removeFromTopLayer(iter->get());
     m_fullScreenElementStack.clear();
 }
 
@@ -536,11 +497,14 @@ void FullscreenElementStack::popFullscreenElementStack()
     if (m_fullScreenElementStack.isEmpty())
         return;
 
+    RefPtr<Element> element = m_fullScreenElementStack.last();
     m_fullScreenElementStack.removeLast();
+    document()->removeFromTopLayer(element.get());
 }
 
 void FullscreenElementStack::pushFullscreenElementStack(Element* element)
 {
+    document()->addToTopLayer(element);
     m_fullScreenElementStack.append(element);
 }