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// Copyright 2016 The PDFium Authors
// 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. http://www.foxitsoftware.com
#ifndef XFA_FXFA_LAYOUT_CXFA_LAYOUTITEM_H_
#define XFA_FXFA_LAYOUT_CXFA_LAYOUTITEM_H_
#include "fxjs/gc/gced_tree_node.h"
#include "fxjs/gc/heap.h"
#include "v8/include/cppgc/member.h"
#include "v8/include/cppgc/prefinalizer.h"
#include "v8/include/cppgc/visitor.h"
class CXFA_ContentLayoutItem;
class CXFA_Node;
class CXFA_ViewLayoutItem;
class CXFA_LayoutItem : public GCedTreeNode<CXFA_LayoutItem> {
CPPGC_USING_PRE_FINALIZER(CXFA_LayoutItem, PreFinalize);
public:
CONSTRUCT_VIA_MAKE_GARBAGE_COLLECTED;
~CXFA_LayoutItem() override;
void PreFinalize();
// GCedTreeNode:
void Trace(cppgc::Visitor* visitor) const 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; }
void SetFormNode(CXFA_Node* pNode);
protected:
enum ItemType { kViewItem, kContentItem };
CXFA_LayoutItem(CXFA_Node* pNode, ItemType type);
private:
const ItemType m_ItemType;
cppgc::Member<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);
#endif // XFA_FXFA_LAYOUT_CXFA_LAYOUTITEM_H_