Move viewport actions into an ApplyScroll callback.

third_party/WebKit/Source/core/frame/LocalFrame.cpp

 /*
  * Copyright (C) 1998, 1999 Torben Weis <weis@kde.org>
  *                     1999 Lars Knoll <knoll@kde.org>
  *                     1999 Antti Koivisto <koivisto@kde.org>
  *                     2000 Simon Hausmann <hausmann@kde.org>
  *                     2000 Stefan Schimanski <1Stein@gmx.de>
  *                     2001 George Staikos <staikos@kde.org>
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All rights reserved.
  * Copyright (C) 2005 Alexey Proskuryakov <ap@nypop.com>
  * Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies)
@@ skipping 44 matching lines @@
 #include "core/layout/HitTestResult.h"
 #include "core/layout/LayoutView.h"
 #include "core/layout/api/LayoutViewItem.h"
 #include "core/layout/compositing/PaintLayerCompositor.h"
 #include "core/loader/FrameLoadRequest.h"
 #include "core/loader/FrameLoaderClient.h"
 #include "core/loader/NavigationScheduler.h"
 #include "core/page/ChromeClient.h"
 #include "core/page/FocusController.h"
 #include "core/page/Page.h"
+#include "core/page/scrolling/ScrollState.h"
+#include "core/page/scrolling/ScrollStateCallback.h"
 #include "core/page/scrolling/ScrollingCoordinator.h"
 #include "core/paint/ObjectPainter.h"
 #include "core/paint/PaintInfo.h"
 #include "core/paint/PaintLayer.h"
 #include "core/paint/TransformRecorder.h"
 #include "core/svg/SVGDocumentExtensions.h"
 #include "platform/DragImage.h"
 #include "platform/PluginScriptForbiddenScope.h"
 #include "platform/RuntimeEnabledFeatures.h"
 #include "platform/ScriptForbiddenScope.h"
@@ skipping 682 matching lines @@
         return false;
 
     return document()->isSecureTransitionTo(url);
 }
 
 void LocalFrame::removeSpellingMarkersUnderWords(const Vector<String>& words)
 {
     spellChecker().removeSpellingMarkersUnderWords(words);
 }
 
-ScrollResult LocalFrame::applyScrollDelta(ScrollGranularity granularity, const FloatSize& delta, bool isScrollBegin)
-{
-    if (isScrollBegin)
-        host()->topControls().scrollBegin();
-
-    if (!view() || delta.isZero())
-        return ScrollResult(false, false, delta.width(), delta.height());
-
-    FloatSize remainingDelta = delta;
-
-    // If this is main frame, allow top controls to scroll first.
-    if (shouldScrollTopControls(granularity, delta))
-        remainingDelta = host()->topControls().scrollBy(remainingDelta);
-
-    if (remainingDelta.isZero())
-        return ScrollResult(delta.width(), delta.height(), 0.0f, 0.0f);
-
-    ScrollResult result = view()->getScrollableArea()->userScroll(granularity, remainingDelta);
-    result.didScrollX = result.didScrollX || (remainingDelta.width() != delta.width());
-    result.didScrollY = result.didScrollY || (remainingDelta.height() != delta.height());
-
-    return result;
-}
-
-bool LocalFrame::shouldScrollTopControls(ScrollGranularity granularity, const FloatSize& delta) const
-{
-    if (!isMainFrame())
-        return false;
-
-    if (granularity != ScrollByPixel && granularity != ScrollByPrecisePixel)
-        return false;
-
-    // Always give the delta to the top controls if the scroll is in
-    // the direction to show the top controls. If it's in the
-    // direction to hide the top controls, only give the delta to the
-    // top controls when the frame can scroll.
-    DoublePoint maximumScrollPosition =
-        host()->visualViewport().maximumScrollPositionDouble() +
-        toDoubleSize(view()->maximumScrollPositionDouble());
-    DoublePoint scrollPosition = host()->visualViewport()
-        .visibleRectInDocument().location();
-    return delta.height() < 0 || scrollPosition.y() < maximumScrollPosition.y();
-}
-
 String LocalFrame::localLayerTreeAsText(unsigned flags) const
 {
     if (!contentLayoutObject())
         return String();
 
     return contentLayoutObject()->compositor()->layerTreeAsText(static_cast<LayerTreeFlags>(flags));
 }
 
 bool LocalFrame::shouldThrottleRendering() const
 {
@@ skipping 50 matching lines @@
 {
     m_frame->disableNavigation();
 }
 
 FrameNavigationDisabler::~FrameNavigationDisabler()
 {
     m_frame->enableNavigation();
 }
 
 } // namespace blink