// Copyright 2014 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. http://www.foxitsoftware.com

#ifndef _XFA_LAYOUT_APPADAPTER_H_
#define _XFA_LAYOUT_APPADAPTER_H_
class CXFA_TraverseStrategy_PageAreaContainerLayoutItem
{
public:
    static inline CXFA_ContainerLayoutItemImpl* GetFirstChild(CXFA_ContainerLayoutItemImpl* pLayoutItem)
    {
        if(pLayoutItem->m_pFormNode->GetClassID() == XFA_ELEMENT_PageSet) {
            return (CXFA_ContainerLayoutItemImpl*)pLayoutItem->m_pFirstChild;
        }
        return NULL;
    }
    static inline CXFA_ContainerLayoutItemImpl* GetNextSibling(CXFA_ContainerLayoutItemImpl* pLayoutItem)
    {
        return (CXFA_ContainerLayoutItemImpl*)pLayoutItem->m_pNextSibling;
    }
    static inline CXFA_ContainerLayoutItemImpl* GetParent(CXFA_ContainerLayoutItemImpl* pLayoutItem)
    {
        return (CXFA_ContainerLayoutItemImpl*)pLayoutItem->m_pParent;
    }
};
class CXFA_TraverseStrategy_ContentAreaContainerLayoutItem
{
public:
    static inline CXFA_ContainerLayoutItemImpl* GetFirstChild(CXFA_ContainerLayoutItemImpl* pLayoutItem)
    {
        for(CXFA_LayoutItemImpl* pChildItem = pLayoutItem->m_pFirstChild; pChildItem; pChildItem = pChildItem->m_pNextSibling) {
            if(pChildItem->IsContentLayoutItem()) {
                continue;
            }
            return (CXFA_ContainerLayoutItemImpl*)pChildItem;
        }
        return NULL;
    }
    static inline CXFA_ContainerLayoutItemImpl* GetNextSibling(CXFA_ContainerLayoutItemImpl* pLayoutItem)
    {
        for(CXFA_LayoutItemImpl* pChildItem = pLayoutItem->m_pNextSibling; pChildItem; pChildItem = pChildItem->m_pNextSibling) {
            if(pChildItem->IsContentLayoutItem()) {
                continue;
            }
            return (CXFA_ContainerLayoutItemImpl*)pChildItem;
        }
        return NULL;
    }
    static inline CXFA_ContainerLayoutItemImpl* GetParent(CXFA_ContainerLayoutItemImpl* pLayoutItem)
    {
        return (CXFA_ContainerLayoutItemImpl*)pLayoutItem->m_pParent;
    }
};
class CXFA_TraverseStrategy_ContentLayoutItem
{
public:
    static inline CXFA_ContentLayoutItemImpl* GetFirstChild(CXFA_ContentLayoutItemImpl* pLayoutItem)
    {
        return (CXFA_ContentLayoutItemImpl*)pLayoutItem->m_pFirstChild;
    }
    static inline CXFA_ContentLayoutItemImpl* GetNextSibling(CXFA_ContentLayoutItemImpl* pLayoutItem)
    {
        return (CXFA_ContentLayoutItemImpl*)pLayoutItem->m_pNextSibling;
    }
    static inline CXFA_ContentLayoutItemImpl* GetParent(CXFA_ContentLayoutItemImpl* pLayoutItem)
    {
        return (CXFA_ContentLayoutItemImpl*)pLayoutItem->m_pParent;
    }
};
FX_DWORD	XFA_GetRelevant(CXFA_Node* pFormItem, FX_DWORD dwParentRelvant);
void		XFA_ReleaseLayoutItem(CXFA_LayoutItemImpl* pLayoutItem);
#endif