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// Copyright 2016 PDFium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// Original code copyright 2014 Foxit Software Inc.
#include "core/fxcrt/tree_node.h"
#include "core/fxcrt/unowned_ptr.h"
#include "xfa/fxfa/parser/cxfa_document.h"
class CXFA_ContentLayoutItem;
class CXFA_LayoutProcessor;
class CXFA_ViewLayoutItem;
class CXFA_LayoutItem : public TreeNode<CXFA_LayoutItem> {
~CXFA_LayoutItem() override;
bool IsViewLayoutItem() const { return m_ItemType == kViewItem; }
bool IsContentLayoutItem() const { return m_ItemType == kContentItem; }
CXFA_ViewLayoutItem* AsViewLayoutItem();
const CXFA_ViewLayoutItem* AsViewLayoutItem() const;
CXFA_ContentLayoutItem* AsContentLayoutItem();
const CXFA_ContentLayoutItem* AsContentLayoutItem() const;
const CXFA_ViewLayoutItem* GetPage() const;
CXFA_Node* GetFormNode() const { return m_pFormNode.Get(); }
void SetFormNode(CXFA_Node* pNode) { m_pFormNode = pNode; }
enum ItemType { kViewItem, kContentItem };
CXFA_LayoutItem(CXFA_Node* pNode, ItemType type);
const ItemType m_ItemType;
UnownedPtr<CXFA_Node> m_pFormNode;
inline CXFA_ViewLayoutItem* ToViewLayoutItem(CXFA_LayoutItem* item) {
return item ? item->AsViewLayoutItem() : nullptr;
inline CXFA_ContentLayoutItem* ToContentLayoutItem(CXFA_LayoutItem* item) {
return item ? item->AsContentLayoutItem() : nullptr;
void XFA_ReleaseLayoutItem(CXFA_LayoutItem* pLayoutItem);