text: /*
   * Copyright (C) 2018 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 "RenderTreeBuilderSVG.h"
  
  #include "RenderSVGContainer.h"
  #include "RenderSVGInline.h"
  #include "RenderSVGRoot.h"
  #include "RenderSVGText.h"
  #include "RenderTreeBuilderBlock.h"
  #include "RenderTreeBuilderBlockFlow.h"
  #include "RenderTreeBuilderInline.h"
  #include "SVGResourcesCache.h"
  
  namespace WebCore {
  
  RenderTreeBuilder::SVG::SVG(RenderTreeBuilder& builder)
      : m_builder(builder)
  {
  }
  
  void RenderTreeBuilder::SVG::attach(RenderSVGContainer& parent, RenderPtr<RenderObject> child, RenderObject* beforeChild)
  {
      auto& childToAdd = *child;
      m_builder.attachToRenderElement(parent, WTFMove(child), beforeChild);
      SVGResourcesCache::clientWasAddedToTree(childToAdd);
  }
  
  void RenderTreeBuilder::SVG::attach(RenderSVGInline& parent, RenderPtr<RenderObject> child, RenderObject* beforeChild)
  {
      auto& childToAdd = *child;
      m_builder.inlineBuilder().attach(parent, WTFMove(child), beforeChild);
      SVGResourcesCache::clientWasAddedToTree(childToAdd);
  
      if (auto* textAncestor = RenderSVGText::locateRenderSVGTextAncestor(parent))
          textAncestor->subtreeChildWasAdded(&childToAdd);
  }
  
  void RenderTreeBuilder::SVG::attach(RenderSVGRoot& parent, RenderPtr<RenderObject> child, RenderObject* beforeChild)
  {
      auto& childToAdd = *child;
      m_builder.attachToRenderElement(parent, WTFMove(child), beforeChild);
      SVGResourcesCache::clientWasAddedToTree(childToAdd);
  }
  
  void RenderTreeBuilder::SVG::attach(RenderSVGText& parent, RenderPtr<RenderObject> child, RenderObject* beforeChild)
  {
      auto& childToAdd = *child;
      m_builder.blockFlowBuilder().attach(parent, WTFMove(child), beforeChild);
  
      SVGResourcesCache::clientWasAddedToTree(childToAdd);
      parent.subtreeChildWasAdded(&childToAdd);
  }
  
  RenderPtr<RenderObject> RenderTreeBuilder::SVG::detach(RenderSVGText& parent, RenderObject& child)
  {
      SVGResourcesCache::clientWillBeRemovedFromTree(child);
  
      Vector<SVGTextLayoutAttributes*, 2> affectedAttributes;
      parent.subtreeChildWillBeRemoved(&child, affectedAttributes);
      auto takenChild = m_builder.blockBuilder().detach(parent, child);
      parent.subtreeChildWasRemoved(affectedAttributes);
      return takenChild;
  }
  
  RenderPtr<RenderObject> RenderTreeBuilder::SVG::detach(RenderSVGInline& parent, RenderObject& child)
  {
      SVGResourcesCache::clientWillBeRemovedFromTree(child);
  
      auto* textAncestor = RenderSVGText::locateRenderSVGTextAncestor(parent);
      if (!textAncestor)
          return m_builder.detachFromRenderElement(parent, child);
  
      Vector<SVGTextLayoutAttributes*, 2> affectedAttributes;
      textAncestor->subtreeChildWillBeRemoved(&child, affectedAttributes);
      auto takenChild = m_builder.detachFromRenderElement(parent, child);
      textAncestor->subtreeChildWasRemoved(affectedAttributes);
      return takenChild;
  }
  
  RenderPtr<RenderObject> RenderTreeBuilder::SVG::detach(RenderSVGContainer& parent, RenderObject& child)
  {
      SVGResourcesCache::clientWillBeRemovedFromTree(child);
      return m_builder.detachFromRenderElement(parent, child);
  }
  
  RenderPtr<RenderObject> RenderTreeBuilder::SVG::detach(RenderSVGRoot& parent, RenderObject& child)
  {
      SVGResourcesCache::clientWillBeRemovedFromTree(child);
      return m_builder.detachFromRenderElement(parent, child);
  }
  
  }
  