Rename rendering/RenderScrollbar* to layout/LayoutScrollbar*

Source/core/rendering/RenderScrollbar.cpp

Index: Source/core/rendering/RenderScrollbar.cpp
diff --git a/Source/core/rendering/RenderScrollbar.cpp b/Source/core/rendering/RenderScrollbar.cpp
deleted file mode 100644
index e5689b296a90e01f3ffaa4bdfe26e417e218715e..0000000000000000000000000000000000000000
--- a/Source/core/rendering/RenderScrollbar.cpp
+++ /dev/null
@@ -1,356 +0,0 @@
-/*
- * Copyright (C) 2008, 2009 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. ``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
- * 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 "core/rendering/RenderScrollbar.h"
-
-#include "core/css/PseudoStyleRequest.h"
-#include "core/frame/FrameView.h"
-#include "core/frame/LocalFrame.h"
-#include "core/layout/LayoutPart.h"
-#include "core/rendering/RenderScrollbarPart.h"
-#include "core/rendering/RenderScrollbarTheme.h"
-#include "platform/graphics/GraphicsContext.h"
-
-namespace blink {
-
-PassRefPtrWillBeRawPtr<Scrollbar> RenderScrollbar::createCustomScrollbar(ScrollableArea* scrollableArea, ScrollbarOrientation orientation, Node* ownerNode, LocalFrame* owningFrame)
-{
-    return adoptRefWillBeNoop(new RenderScrollbar(scrollableArea, orientation, ownerNode, owningFrame));
-}
-
-RenderScrollbar::RenderScrollbar(ScrollableArea* scrollableArea, ScrollbarOrientation orientation, Node* ownerNode, LocalFrame* owningFrame)
-    : Scrollbar(scrollableArea, orientation, RegularScrollbar, RenderScrollbarTheme::renderScrollbarTheme())
-    , m_owner(ownerNode)
-    , m_owningFrame(owningFrame)
-{
-    ASSERT(ownerNode || owningFrame);
-
-    // FIXME: We need to do this because RenderScrollbar::styleChanged is called as soon as the scrollbar is created.
-
-    // Update the scrollbar size.
-    IntRect rect(0, 0, 0, 0);
-    updateScrollbarPart(ScrollbarBGPart);
-    if (RenderScrollbarPart* part = m_parts.get(ScrollbarBGPart)) {
-        part->layout();
-        rect.setSize(flooredIntSize(part->size()));
-    } else if (this->orientation() == HorizontalScrollbar) {
-        rect.setWidth(this->width());
-    } else {
-        rect.setHeight(this->height());
-    }
-
-    setFrameRect(rect);
-
-}
-
-RenderScrollbar::~RenderScrollbar()
-{
-    if (m_parts.isEmpty())
-        return;
-
-    // When a scrollbar is detached from its parent (causing all parts removal) and
-    // ready to be destroyed, its destruction can be delayed because of RefPtr
-    // maintained in other classes such as EventHandler (m_lastScrollbarUnderMouse).
-    // Meanwhile, we can have a call to updateScrollbarPart which recreates the
-    // scrollbar part. So, we need to destroy these parts since we don't want them
-    // to call on a destroyed scrollbar. See webkit bug 68009.
-    updateScrollbarParts(true);
-}
-
-void RenderScrollbar::trace(Visitor* visitor)
-{
-#if ENABLE(OILPAN)
-    visitor->trace(m_owner);
-    visitor->trace(m_owningFrame);
-#endif
-    Scrollbar::trace(visitor);
-}
-
-RenderBox* RenderScrollbar::owningRenderer() const
-{
-    if (m_owningFrame) {
-        RenderBox* currentRenderer = m_owningFrame->ownerRenderer();
-        return currentRenderer;
-    }
-    return m_owner && m_owner->renderer() ? m_owner->renderer()->enclosingBox() : 0;
-}
-
-void RenderScrollbar::setParent(Widget* parent)
-{
-    Scrollbar::setParent(parent);
-    if (!parent) {
-        // Destroy all of the scrollbar's RenderBoxes.
-        updateScrollbarParts(true);
-    }
-}
-
-void RenderScrollbar::setEnabled(bool e)
-{
-    bool wasEnabled = enabled();
-    Scrollbar::setEnabled(e);
-    if (wasEnabled != e)
-        updateScrollbarParts();
-}
-
-void RenderScrollbar::styleChanged()
-{
-    updateScrollbarParts();
-}
-
-void RenderScrollbar::setHoveredPart(ScrollbarPart part)
-{
-    if (part == m_hoveredPart)
-        return;
-
-    ScrollbarPart oldPart = m_hoveredPart;
-    m_hoveredPart = part;
-
-    updateScrollbarPart(oldPart);
-    updateScrollbarPart(m_hoveredPart);
-
-    updateScrollbarPart(ScrollbarBGPart);
-    updateScrollbarPart(TrackBGPart);
-}
-
-void RenderScrollbar::setPressedPart(ScrollbarPart part)
-{
-    ScrollbarPart oldPart = m_pressedPart;
-    Scrollbar::setPressedPart(part);
-
-    updateScrollbarPart(oldPart);
-    updateScrollbarPart(part);
-
-    updateScrollbarPart(ScrollbarBGPart);
-    updateScrollbarPart(TrackBGPart);
-}
-
-PassRefPtr<LayoutStyle> RenderScrollbar::getScrollbarPseudoStyle(ScrollbarPart partType, PseudoId pseudoId)
-{
-    if (!owningRenderer())
-        return nullptr;
-
-    RefPtr<LayoutStyle> result = owningRenderer()->getUncachedPseudoStyle(PseudoStyleRequest(pseudoId, this, partType), owningRenderer()->style());
-    // Scrollbars for root frames should always have background color
-    // unless explicitly specified as transparent. So we force it.
-    // This is because WebKit assumes scrollbar to be always painted and missing background
-    // causes visual artifact like non-paint invalidated dirty region.
-    if (result && m_owningFrame && m_owningFrame->view() && !m_owningFrame->view()->isTransparent() && !result->hasBackground())
-        result->setBackgroundColor(StyleColor(Color::white));
-
-    return result;
-}
-
-void RenderScrollbar::updateScrollbarParts(bool destroy)
-{
-    updateScrollbarPart(ScrollbarBGPart, destroy);
-    updateScrollbarPart(BackButtonStartPart, destroy);
-    updateScrollbarPart(ForwardButtonStartPart, destroy);
-    updateScrollbarPart(BackTrackPart, destroy);
-    updateScrollbarPart(ThumbPart, destroy);
-    updateScrollbarPart(ForwardTrackPart, destroy);
-    updateScrollbarPart(BackButtonEndPart, destroy);
-    updateScrollbarPart(ForwardButtonEndPart, destroy);
-    updateScrollbarPart(TrackBGPart, destroy);
-
-    if (destroy)
-        return;
-
-    // See if the scrollbar's thickness changed.  If so, we need to mark our owning object as needing a layout.
-    bool isHorizontal = orientation() == HorizontalScrollbar;
-    int oldThickness = isHorizontal ? height() : width();
-    int newThickness = 0;
-    RenderScrollbarPart* part = m_parts.get(ScrollbarBGPart);
-    if (part) {
-        part->layout();
-        newThickness = isHorizontal ? part->size().height() : part->size().width();
-    }
-
-    if (newThickness != oldThickness) {
-        setFrameRect(IntRect(location(), IntSize(isHorizontal ? width() : newThickness, isHorizontal ? newThickness : height())));
-        if (RenderBox* box = owningRenderer()) {
-            if (box->isRenderBlock())
-                toRenderBlock(box)->notifyScrollbarThicknessChanged();
-            box->setChildNeedsLayout();
-        }
-    }
-}
-
-static PseudoId pseudoForScrollbarPart(ScrollbarPart part)
-{
-    switch (part) {
-        case BackButtonStartPart:
-        case ForwardButtonStartPart:
-        case BackButtonEndPart:
-        case ForwardButtonEndPart:
-            return SCROLLBAR_BUTTON;
-        case BackTrackPart:
-        case ForwardTrackPart:
-            return SCROLLBAR_TRACK_PIECE;
-        case ThumbPart:
-            return SCROLLBAR_THUMB;
-        case TrackBGPart:
-            return SCROLLBAR_TRACK;
-        case ScrollbarBGPart:
-            return SCROLLBAR;
-        case NoPart:
-        case AllParts:
-            break;
-    }
-    ASSERT_NOT_REACHED();
-    return SCROLLBAR;
-}
-
-void RenderScrollbar::updateScrollbarPart(ScrollbarPart partType, bool destroy)
-{
-    if (partType == NoPart)
-        return;
-
-    RefPtr<LayoutStyle> partStyle = !destroy ? getScrollbarPseudoStyle(partType,  pseudoForScrollbarPart(partType)) : PassRefPtr<LayoutStyle>(nullptr);
-
-    bool needRenderer = !destroy && partStyle && partStyle->display() != NONE;
-
-    if (needRenderer && partStyle->display() != BLOCK) {
-        // See if we are a button that should not be visible according to OS settings.
-        ScrollbarButtonsPlacement buttonsPlacement = theme()->buttonsPlacement();
-        switch (partType) {
-            case BackButtonStartPart:
-                needRenderer = (buttonsPlacement == ScrollbarButtonsSingle || buttonsPlacement == ScrollbarButtonsDoubleStart ||
-                                buttonsPlacement == ScrollbarButtonsDoubleBoth);
-                break;
-            case ForwardButtonStartPart:
-                needRenderer = (buttonsPlacement == ScrollbarButtonsDoubleStart || buttonsPlacement == ScrollbarButtonsDoubleBoth);
-                break;
-            case BackButtonEndPart:
-                needRenderer = (buttonsPlacement == ScrollbarButtonsDoubleEnd || buttonsPlacement == ScrollbarButtonsDoubleBoth);
-                break;
-            case ForwardButtonEndPart:
-                needRenderer = (buttonsPlacement == ScrollbarButtonsSingle || buttonsPlacement == ScrollbarButtonsDoubleEnd ||
-                                buttonsPlacement == ScrollbarButtonsDoubleBoth);
-                break;
-            default:
-                break;
-        }
-    }
-
-    RenderScrollbarPart* partRenderer = m_parts.get(partType);
-    if (!partRenderer && needRenderer) {
-        partRenderer = RenderScrollbarPart::createAnonymous(&owningRenderer()->document(), this, partType);
-        m_parts.set(partType, partRenderer);
-    } else if (partRenderer && !needRenderer) {
-        m_parts.remove(partType);
-        partRenderer->destroy();
-        partRenderer = 0;
-    }
-
-    if (partRenderer)
-        partRenderer->setStyle(partStyle.release());
-}
-
-IntRect RenderScrollbar::buttonRect(ScrollbarPart partType)
-{
-    RenderScrollbarPart* partRenderer = m_parts.get(partType);
-    if (!partRenderer)
-        return IntRect();
-
-    partRenderer->layout();
-
-    bool isHorizontal = orientation() == HorizontalScrollbar;
-    if (partType == BackButtonStartPart)
-        return IntRect(location(), IntSize(isHorizontal ? partRenderer->pixelSnappedWidth() : width(), isHorizontal ? height() : partRenderer->pixelSnappedHeight()));
-    if (partType == ForwardButtonEndPart)
-        return IntRect(isHorizontal ? x() + width() - partRenderer->pixelSnappedWidth() : x(),
-                       isHorizontal ? y() : y() + height() - partRenderer->pixelSnappedHeight(),
-                       isHorizontal ? partRenderer->pixelSnappedWidth() : width(),
-                       isHorizontal ? height() : partRenderer->pixelSnappedHeight());
-
-    if (partType == ForwardButtonStartPart) {
-        IntRect previousButton = buttonRect(BackButtonStartPart);
-        return IntRect(isHorizontal ? x() + previousButton.width() : x(),
-                       isHorizontal ? y() : y() + previousButton.height(),
-                       isHorizontal ? partRenderer->pixelSnappedWidth() : width(),
-                       isHorizontal ? height() : partRenderer->pixelSnappedHeight());
-    }
-
-    IntRect followingButton = buttonRect(ForwardButtonEndPart);
-    return IntRect(isHorizontal ? x() + width() - followingButton.width() - partRenderer->pixelSnappedWidth() : x(),
-                   isHorizontal ? y() : y() + height() - followingButton.height() - partRenderer->pixelSnappedHeight(),
-                   isHorizontal ? partRenderer->pixelSnappedWidth() : width(),
-                   isHorizontal ? height() : partRenderer->pixelSnappedHeight());
-}
-
-IntRect RenderScrollbar::trackRect(int startLength, int endLength)
-{
-    RenderScrollbarPart* part = m_parts.get(TrackBGPart);
-    if (part)
-        part->layout();
-
-    if (orientation() == HorizontalScrollbar) {
-        int marginLeft = part ? static_cast<int>(part->marginLeft()) : 0;
-        int marginRight = part ? static_cast<int>(part->marginRight()) : 0;
-        startLength += marginLeft;
-        endLength += marginRight;
-        int totalLength = startLength + endLength;
-        return IntRect(x() + startLength, y(), width() - totalLength, height());
-    }
-
-    int marginTop = part ? static_cast<int>(part->marginTop()) : 0;
-    int marginBottom = part ? static_cast<int>(part->marginBottom()) : 0;
-    startLength += marginTop;
-    endLength += marginBottom;
-    int totalLength = startLength + endLength;
-
-    return IntRect(x(), y() + startLength, width(), height() - totalLength);
-}
-
-IntRect RenderScrollbar::trackPieceRectWithMargins(ScrollbarPart partType, const IntRect& oldRect)
-{
-    RenderScrollbarPart* partRenderer = m_parts.get(partType);
-    if (!partRenderer)
-        return oldRect;
-
-    partRenderer->layout();
-
-    IntRect rect = oldRect;
-    if (orientation() == HorizontalScrollbar) {
-        rect.setX(rect.x() + partRenderer->marginLeft());
-        rect.setWidth(rect.width() - partRenderer->marginWidth());
-    } else {
-        rect.setY(rect.y() + partRenderer->marginTop());
-        rect.setHeight(rect.height() - partRenderer->marginHeight());
-    }
-    return rect;
-}
-
-int RenderScrollbar::minimumThumbLength()
-{
-    RenderScrollbarPart* partRenderer = m_parts.get(ThumbPart);
-    if (!partRenderer)
-        return 0;
-    partRenderer->layout();
-    return orientation() == HorizontalScrollbar ? partRenderer->size().width() : partRenderer->size().height();
-}
-
-}