Split xfa_layout_appadapter

xfa/fxfa/parser/cxfa_layoutitem.cpp

 // 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. http://www.foxitsoftware.com
 
 #include "xfa/fxfa/parser/cxfa_layoutitem.h"
 
+#include "xfa/fxfa/app/xfa_ffnotify.h"
 #include "xfa/fxfa/parser/cxfa_containerlayoutitem.h"
 #include "xfa/fxfa/parser/cxfa_contentlayoutitem.h"
 
+void XFA_ReleaseLayoutItem(CXFA_LayoutItem* pLayoutItem) {
+  CXFA_LayoutItem* pNode = pLayoutItem->m_pFirstChild;
+  CXFA_FFNotify* pNotify = pLayoutItem->m_pFormNode->GetDocument()->GetNotify();
+  CXFA_LayoutProcessor* pDocLayout =
+      pLayoutItem->m_pFormNode->GetDocument()->GetDocLayout();
+  while (pNode) {
+    CXFA_LayoutItem* pNext = pNode->m_pNextSibling;
+    pNode->m_pParent = nullptr;
+    pNotify->OnLayoutItemRemoving(pDocLayout,
+                                  static_cast<CXFA_LayoutItem*>(pNode));
+    XFA_ReleaseLayoutItem(pNode);
+    pNode = pNext;
+  }
+
+  pNotify->OnLayoutItemRemoving(pDocLayout, pLayoutItem);
+  if (pLayoutItem->m_pFormNode->GetElementType() == XFA_Element::PageArea) {
+    pNotify->OnPageEvent(static_cast<CXFA_ContainerLayoutItem*>(pLayoutItem),
+                         XFA_PAGEVIEWEVENT_PostRemoved);
+  }
+  delete pLayoutItem;
+}
+
 CXFA_LayoutItem::CXFA_LayoutItem(CXFA_Node* pNode, FX_BOOL bIsContentLayoutItem)
     : m_pFormNode(pNode),
       m_pParent(nullptr),
       m_pNextSibling(nullptr),
       m_pFirstChild(nullptr),
       m_bIsContentLayoutItem(bIsContentLayoutItem) {}
 
 CXFA_LayoutItem::~CXFA_LayoutItem() {}
 
 CXFA_ContainerLayoutItem* CXFA_LayoutItem::AsContainerLayoutItem() {
   return IsContainerLayoutItem() ? static_cast<CXFA_ContainerLayoutItem*>(this)
                                  : nullptr;
 }
 CXFA_ContentLayoutItem* CXFA_LayoutItem::AsContentLayoutItem() {
   return IsContentLayoutItem() ? static_cast<CXFA_ContentLayoutItem*>(this)
                                : nullptr;
 }