Make CaretBase a DisplayItemClient.

third_party/WebKit/Source/core/editing/CaretBase.cpp

 /*
  * Copyright (C) 2004, 2008, 2009, 2010 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
@@ skipping 124 matching lines @@
 {
     LayoutBlock* caretPainter = caretLayoutObject(node);
     if (!caretPainter)
         return IntRect();
 
     LayoutRect localRect(rect);
     caretPainter->flipForWritingMode(localRect);
     return caretPainter->localToAbsoluteQuad(FloatRect(localRect)).enclosingBoundingBox();
 }
 
-DisplayItemClient* CaretBase::displayItemClientForCaret(Node* node)
-{
-    LayoutBlock* caretLayoutBlock = caretLayoutObject(node);
-    if (!caretLayoutBlock)
-        return nullptr;
-    if (caretLayoutBlock->usesCompositedScrolling())
-        return static_cast<DisplayItemClient*>(caretLayoutBlock->layer()->graphicsLayerBackingForScrolling());
-    return caretLayoutBlock;
-}
-
 // TODO(yoichio): |node| is FrameSelection::m_previousCaretNode and this is bad
 // design. We should use only previous layoutObject or Rectangle to invalidate
 // old caret.
 void CaretBase::invalidateLocalCaretRect(Node* node, const LayoutRect& rect)
 {
     LayoutBlock* caretLayoutBlock = caretLayoutObject(node);
     if (!caretLayoutBlock)
         return;
 
     // FIXME: Need to over-paint 1 pixel to workaround some rounding problems.
     // https://bugs.webkit.org/show_bug.cgi?id=108283
     LayoutRect inflatedRect = rect;
     inflatedRect.inflate(LayoutUnit(1));
 
     // FIXME: We should not allow paint invalidation out of paint invalidation state. crbug.com/457415
     DisablePaintInvalidationStateAsserts disabler;
 
-    node->layoutObject()->invalidatePaintRectangle(inflatedRect, displayItemClientForCaret(node));
+    m_visualRect = node->layoutObject()->invalidatePaintRectangle(inflatedRect, this);
 }
 
 bool CaretBase::shouldRepaintCaret(Node& node) const
 {
     // If PositionAnchorType::BeforeAnchor or PositionAnchorType::AfterAnchor,
     // carets need to be repainted not only when the node is contentEditable but
     // also when its parentNode() is contentEditable.
     node.document().updateStyleAndLayoutTree();
     return hasEditableStyle(node) || (node.parentNode() && hasEditableStyle(*node.parentNode()));
 }
@@ skipping 18 matching lines @@
         if (hasEditableStyle(*node) || shouldRepaintCaret(view))
             invalidateLocalCaretRect(node, localCaretRectWithoutUpdate());
     }
 }
 
 void CaretBase::paintCaret(Node* node, GraphicsContext& context, const LayoutPoint& paintOffset, DisplayItem::Type displayItemType) const
 {
     if (m_caretVisibility == CaretVisibility::Hidden)
         return;
 
-    DisplayItemClient* displayItemClient = displayItemClientForCaret(node);
-    if (!displayItemClient)
-        return;
-
-    if (DrawingRecorder::useCachedDrawingIfPossible(context, *displayItemClient, displayItemType))
+    if (DrawingRecorder::useCachedDrawingIfPossible(context, *this, displayItemType))
         return;
 
     LayoutRect drawingRect = localCaretRectWithoutUpdate();
     if (LayoutBlock* layoutObject = caretLayoutObject(node))
         layoutObject->flipForWritingMode(drawingRect);
     drawingRect.moveBy(roundedIntPoint(paintOffset));
 
     Color caretColor = Color::black;
 
     Element* element;
     if (node->isElementNode())
         element = toElement(node);
     else
         element = node->parentElement();
 
     if (element && element->layoutObject())
         caretColor = element->layoutObject()->resolveColor(CSSPropertyColor);
 
-    DrawingRecorder drawingRecorder(context, *displayItemClientForCaret(node), DisplayItem::kCaret, FloatRect(drawingRect));
+    DrawingRecorder drawingRecorder(context, *this, DisplayItem::kCaret, FloatRect(drawingRect));
 
     context.fillRect(FloatRect(drawingRect), caretColor);
 }
 
 void CaretBase::setCaretVisibility(CaretVisibility visibility)
 {
     m_caretVisibility = visibility;
 }
 
+String CaretBase::debugName() const
+{
+    return "Caret";
+}
+
+LayoutRect CaretBase::visualRect() const
+{
+    return m_visualRect;
+}
+
 } // namespace blink