chromium/third_party/blink/renderer/core/dom/whitespace_attacher.h

// Copyright 2017 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef THIRD_PARTY_BLINK_RENDERER_CORE_DOM_WHITESPACE_ATTACHER_H_
#define THIRD_PARTY_BLINK_RENDERER_CORE_DOM_WHITESPACE_ATTACHER_H_

#include "third_party/blink/renderer/core/core_export.h"
#include "third_party/blink/renderer/platform/heap/member.h"

namespace blink {

class Element;
class LayoutObject;
class Node;
class Text;

// The WhitespaceAttacher is used during the layout tree rebuild to lazily re-
// attach whitespace LayoutObjects when necessary. For more details about white-
// space LayoutObjects, see the WhitespaceLayoutObjects.md file in this
// directory.
//
// As RebuildLayoutTree walks from last to first child, we track the last text
// node, or the last skipped display:contents element we have seen. These are
// reset to null as soon as we encounter an in-flow element.
//
// If the tracked text node needed a (re-)attach, we call
// ReattachWhitespaceSiblings once we visit or re-attach the first preceding
// in-flow.
//
// If we re-attach a preceding in-flow, we also call ReattachWhitespaceSiblings
// since the need for a succeeding whitespace LayoutObject may change.

class CORE_EXPORT WhitespaceAttacher { … };

}  // namespace blink

#endif  // THIRD_PARTY_BLINK_RENDERER_CORE_DOM_WHITESPACE_ATTACHER_H_