Fold ScrollingCoordinatorChromium into ScrollingCoordinator and devirtualize

Source/WebCore/page/scrolling/ScrollingStateScrollingNode.cpp

Index: Source/WebCore/page/scrolling/ScrollingStateScrollingNode.cpp
diff --git a/Source/WebCore/page/scrolling/ScrollingStateScrollingNode.cpp b/Source/WebCore/page/scrolling/ScrollingStateScrollingNode.cpp
deleted file mode 100644
index 23989bd24ed2a3fa4496386c8f1de15036e98972..0000000000000000000000000000000000000000
--- a/Source/WebCore/page/scrolling/ScrollingStateScrollingNode.cpp
+++ /dev/null
@@ -1,288 +0,0 @@
-/*
- * Copyright (C) 2012 Apple Inc. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
- * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
- * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
- * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
- * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
- * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
- * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
- * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
- * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
- * THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "config.h"
-#include "ScrollingStateScrollingNode.h"
-
-#include "ScrollingStateTree.h"
-#include "TextStream.h"
-#include <wtf/OwnPtr.h>
-
-#if ENABLE(THREADED_SCROLLING)
-
-namespace WebCore {
-
-PassOwnPtr<ScrollingStateScrollingNode> ScrollingStateScrollingNode::create(ScrollingStateTree* stateTree, ScrollingNodeID nodeID)
-{
-    return adoptPtr(new ScrollingStateScrollingNode(stateTree, nodeID));
-}
-
-ScrollingStateScrollingNode::ScrollingStateScrollingNode(ScrollingStateTree* stateTree, ScrollingNodeID nodeID)
-    : ScrollingStateNode(stateTree, nodeID)
-    , m_counterScrollingLayer(0)
-    , m_frameScaleFactor(1)
-    , m_wheelEventHandlerCount(0)
-    , m_shouldUpdateScrollLayerPositionOnMainThread(0)
-    , m_horizontalScrollElasticity(ScrollElasticityNone)
-    , m_verticalScrollElasticity(ScrollElasticityNone)
-    , m_hasEnabledHorizontalScrollbar(false)
-    , m_hasEnabledVerticalScrollbar(false)
-    , m_requestedScrollPositionRepresentsProgrammaticScroll(false)
-    , m_horizontalScrollbarMode(ScrollbarAuto)
-    , m_verticalScrollbarMode(ScrollbarAuto)
-    , m_headerHeight(0)
-    , m_footerHeight(0)
-{
-}
-
-ScrollingStateScrollingNode::ScrollingStateScrollingNode(const ScrollingStateScrollingNode& stateNode)
-    : ScrollingStateNode(stateNode)
-    , m_viewportRect(stateNode.viewportRect())
-    , m_totalContentsSize(stateNode.totalContentsSize())
-    , m_frameScaleFactor(stateNode.frameScaleFactor())
-    , m_nonFastScrollableRegion(stateNode.nonFastScrollableRegion())
-    , m_wheelEventHandlerCount(stateNode.wheelEventHandlerCount())
-    , m_shouldUpdateScrollLayerPositionOnMainThread(stateNode.shouldUpdateScrollLayerPositionOnMainThread())
-    , m_horizontalScrollElasticity(stateNode.horizontalScrollElasticity())
-    , m_verticalScrollElasticity(stateNode.verticalScrollElasticity())
-    , m_hasEnabledHorizontalScrollbar(stateNode.hasEnabledHorizontalScrollbar())
-    , m_hasEnabledVerticalScrollbar(stateNode.hasEnabledVerticalScrollbar())
-    , m_requestedScrollPositionRepresentsProgrammaticScroll(stateNode.requestedScrollPositionRepresentsProgrammaticScroll())
-    , m_horizontalScrollbarMode(stateNode.horizontalScrollbarMode())
-    , m_verticalScrollbarMode(stateNode.verticalScrollbarMode())
-    , m_requestedScrollPosition(stateNode.requestedScrollPosition())
-    , m_scrollOrigin(stateNode.scrollOrigin())
-    , m_headerHeight(stateNode.headerHeight())
-    , m_footerHeight(stateNode.footerHeight())
-{
-    setCounterScrollingLayer(stateNode.counterScrollingLayer());
-}
-
-ScrollingStateScrollingNode::~ScrollingStateScrollingNode()
-{
-}
-
-PassOwnPtr<ScrollingStateNode> ScrollingStateScrollingNode::clone()
-{
-    return adoptPtr(new ScrollingStateScrollingNode(*this));
-}
-
-void ScrollingStateScrollingNode::setViewportRect(const IntRect& viewportRect)
-{
-    if (m_viewportRect == viewportRect)
-        return;
-
-    m_viewportRect = viewportRect;
-    setPropertyChanged(ViewportRect);
-    m_scrollingStateTree->setHasChangedProperties(true);
-}
-
-void ScrollingStateScrollingNode::setTotalContentsSize(const IntSize& totalContentsSize)
-{
-    if (m_totalContentsSize == totalContentsSize)
-        return;
-
-    m_totalContentsSize = totalContentsSize;
-    setPropertyChanged(TotalContentsSize);
-    m_scrollingStateTree->setHasChangedProperties(true);
-}
-
-void ScrollingStateScrollingNode::setFrameScaleFactor(float scaleFactor)
-{
-    if (m_frameScaleFactor == scaleFactor)
-        return;
-
-    m_frameScaleFactor = scaleFactor;
-
-    setPropertyChanged(FrameScaleFactor);
-    m_scrollingStateTree->setHasChangedProperties(true);
-}
-
-void ScrollingStateScrollingNode::setNonFastScrollableRegion(const Region& nonFastScrollableRegion)
-{
-    if (m_nonFastScrollableRegion == nonFastScrollableRegion)
-        return;
-
-    m_nonFastScrollableRegion = nonFastScrollableRegion;
-    setPropertyChanged(NonFastScrollableRegion);
-    m_scrollingStateTree->setHasChangedProperties(true);
-}
-
-void ScrollingStateScrollingNode::setWheelEventHandlerCount(unsigned wheelEventHandlerCount)
-{
-    if (m_wheelEventHandlerCount == wheelEventHandlerCount)
-        return;
-
-    m_wheelEventHandlerCount = wheelEventHandlerCount;
-    setPropertyChanged(WheelEventHandlerCount);
-    m_scrollingStateTree->setHasChangedProperties(true);
-}
-
-void ScrollingStateScrollingNode::setShouldUpdateScrollLayerPositionOnMainThread(MainThreadScrollingReasons reasons)
-{
-    if (m_shouldUpdateScrollLayerPositionOnMainThread == reasons)
-        return;
-
-    m_shouldUpdateScrollLayerPositionOnMainThread = reasons;
-    setPropertyChanged(ShouldUpdateScrollLayerPositionOnMainThread);
-    m_scrollingStateTree->setHasChangedProperties(true);
-}
-
-void ScrollingStateScrollingNode::setHorizontalScrollElasticity(ScrollElasticity horizontalScrollElasticity)
-{
-    if (m_horizontalScrollElasticity == horizontalScrollElasticity)
-        return;
-
-    m_horizontalScrollElasticity = horizontalScrollElasticity;
-    setPropertyChanged(HorizontalScrollElasticity);
-    m_scrollingStateTree->setHasChangedProperties(true);
-}
-
-void ScrollingStateScrollingNode::setVerticalScrollElasticity(ScrollElasticity verticalScrollElasticity)
-{
-    if (m_verticalScrollElasticity == verticalScrollElasticity)
-        return;
-
-    m_verticalScrollElasticity = verticalScrollElasticity;
-    setPropertyChanged(VerticalScrollElasticity);
-    m_scrollingStateTree->setHasChangedProperties(true);
-}
-
-void ScrollingStateScrollingNode::setHasEnabledHorizontalScrollbar(bool hasEnabledHorizontalScrollbar)
-{
-    if (m_hasEnabledHorizontalScrollbar == hasEnabledHorizontalScrollbar)
-        return;
-
-    m_hasEnabledHorizontalScrollbar = hasEnabledHorizontalScrollbar;
-    setPropertyChanged(HasEnabledHorizontalScrollbar);
-    m_scrollingStateTree->setHasChangedProperties(true);
-}
-
-void ScrollingStateScrollingNode::setHasEnabledVerticalScrollbar(bool hasEnabledVerticalScrollbar)
-{
-    if (m_hasEnabledVerticalScrollbar == hasEnabledVerticalScrollbar)
-        return;
-
-    m_hasEnabledVerticalScrollbar = hasEnabledVerticalScrollbar;
-    setPropertyChanged(HasEnabledVerticalScrollbar);
-    m_scrollingStateTree->setHasChangedProperties(true);
-}
-
-void ScrollingStateScrollingNode::setHorizontalScrollbarMode(ScrollbarMode horizontalScrollbarMode)
-{
-    if (m_horizontalScrollbarMode == horizontalScrollbarMode)
-        return;
-
-    m_horizontalScrollbarMode = horizontalScrollbarMode;
-    setPropertyChanged(HorizontalScrollbarMode);
-    m_scrollingStateTree->setHasChangedProperties(true);
-}
-
-void ScrollingStateScrollingNode::setVerticalScrollbarMode(ScrollbarMode verticalScrollbarMode)
-{
-    if (m_verticalScrollbarMode == verticalScrollbarMode)
-        return;
-
-    m_verticalScrollbarMode = verticalScrollbarMode;
-    setPropertyChanged(VerticalScrollbarMode);
-    m_scrollingStateTree->setHasChangedProperties(true);
-}
-
-void ScrollingStateScrollingNode::setRequestedScrollPosition(const IntPoint& requestedScrollPosition, bool representsProgrammaticScroll)
-{
-    m_requestedScrollPosition = requestedScrollPosition;
-    m_requestedScrollPositionRepresentsProgrammaticScroll = representsProgrammaticScroll;
-    setPropertyChanged(RequestedScrollPosition);
-    m_scrollingStateTree->setHasChangedProperties(true);
-}
-
-void ScrollingStateScrollingNode::setScrollOrigin(const IntPoint& scrollOrigin)
-{
-    if (m_scrollOrigin == scrollOrigin)
-        return;
-
-    m_scrollOrigin = scrollOrigin;
-    setPropertyChanged(ScrollOrigin);
-    m_scrollingStateTree->setHasChangedProperties(true);
-}
-
-void ScrollingStateScrollingNode::setHeaderHeight(int headerHeight)
-{
-    if (m_headerHeight == headerHeight)
-        return;
-
-    m_headerHeight = headerHeight;
-    setPropertyChanged(HeaderHeight);
-    m_scrollingStateTree->setHasChangedProperties(true);
-}
-
-void ScrollingStateScrollingNode::setFooterHeight(int footerHeight)
-{
-    if (m_footerHeight == footerHeight)
-        return;
-
-    m_footerHeight = footerHeight;
-    setPropertyChanged(FooterHeight);
-    m_scrollingStateTree->setHasChangedProperties(true);
-}
-
-void ScrollingStateScrollingNode::dumpProperties(TextStream& ts, int indent) const
-{
-    ts << "(" << "Scrolling node" << "\n";
-
-    if (!m_viewportRect.isEmpty()) {
-        writeIndent(ts, indent + 1);
-        ts << "(viewport rect " << m_viewportRect.x() << " " << m_viewportRect.y() << " " << m_viewportRect.width() << " " << m_viewportRect.height() << ")\n";
-    }
-
-    if (!m_totalContentsSize.isEmpty()) {
-        writeIndent(ts, indent + 1);
-        ts << "(contents size " << m_totalContentsSize.width() << " " << m_totalContentsSize.height() << ")\n";
-    }
-
-    if (m_frameScaleFactor != 1) {
-        writeIndent(ts, indent + 1);
-        ts << "(frame scale factor " << m_frameScaleFactor << ")\n";
-    }
-
-    if (m_shouldUpdateScrollLayerPositionOnMainThread) {
-        writeIndent(ts, indent + 1);
-        ts << "(Scrolling on main thread because: " << ScrollingCoordinator::mainThreadScrollingReasonsAsText(m_shouldUpdateScrollLayerPositionOnMainThread) << ")\n";
-    }
-
-    if (m_requestedScrollPosition != IntPoint()) {
-        writeIndent(ts, indent + 1);
-        ts << "(requested scroll position " << m_requestedScrollPosition.x() << " " << m_requestedScrollPosition.y() << ")\n";
-    }
-
-    if (m_scrollOrigin != IntPoint()) {
-        writeIndent(ts, indent + 1);
-        ts << "(scroll origin " << m_scrollOrigin.x() << " " << m_scrollOrigin.y() << ")\n";
-    }
-}
-
-} // namespace WebCore
-
-#endif // ENABLE(THREADED_SCROLLING)