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// 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
#include "xfa/fxfa/parser/xfa_document_datamerger_imp.h"
#include "xfa/fxfa/parser/cxfa_node.h"
bool XFA_DataMerge_NeedGenerateForm(CXFA_Node* pTemplateChild,
bool bUseInstanceManager) {
XFA_Element eType = pTemplateChild->GetElementType();
if (eType == XFA_Element::Variables)
return true;
if (pTemplateChild->IsContainerNode())
return false;
if (eType == XFA_Element::Proto ||
(bUseInstanceManager && eType == XFA_Element::Occur)) {
return false;
}
return true;
}
CXFA_Node* XFA_DataMerge_FindFormDOMInstance(CXFA_Document* pDocument,
XFA_Element eType,
uint32_t dwNameHash,
CXFA_Node* pFormParent) {
CXFA_Node* pFormChild = pFormParent->GetFirstChild();
for (; pFormChild; pFormChild = pFormChild->GetNextSibling()) {
if (pFormChild->GetElementType() == eType &&
pFormChild->GetNameHash() == dwNameHash && pFormChild->IsUnusedNode()) {
return pFormChild;
}
}
return nullptr;
}
CXFA_Node* XFA_NodeMerge_CloneOrMergeContainer(
CXFA_Document* pDocument,
CXFA_Node* pFormParent,
CXFA_Node* pTemplateNode,
bool bRecursive,
std::vector<CXFA_Node*>* pSubformArray) {
CXFA_Node* pExistingNode = nullptr;
if (!pSubformArray) {
pExistingNode = XFA_DataMerge_FindFormDOMInstance(
pDocument, pTemplateNode->GetElementType(),
pTemplateNode->GetNameHash(), pFormParent);
} else if (!pSubformArray->empty()) {
pExistingNode = pSubformArray->front();
pSubformArray->erase(pSubformArray->begin());
}
if (pExistingNode) {
if (pSubformArray) {
pFormParent->InsertChild(pExistingNode, nullptr);
} else if (pExistingNode->IsContainerNode()) {
pFormParent->RemoveChild(pExistingNode, true);
pFormParent->InsertChild(pExistingNode, nullptr);
}
pExistingNode->ClearFlag(XFA_NodeFlag_UnusedNode);
pExistingNode->SetTemplateNode(pTemplateNode);
if (bRecursive && pExistingNode->GetElementType() != XFA_Element::Items) {
for (CXFA_Node* pTemplateChild = pTemplateNode->GetFirstChild();
pTemplateChild; pTemplateChild = pTemplateChild->GetNextSibling()) {
if (XFA_DataMerge_NeedGenerateForm(pTemplateChild, true)) {
XFA_NodeMerge_CloneOrMergeContainer(
pDocument, pExistingNode, pTemplateChild, bRecursive, nullptr);
}
}
}
pExistingNode->SetFlagAndNotify(XFA_NodeFlag_Initialized);
return pExistingNode;
}
CXFA_Node* pNewNode = pTemplateNode->CloneTemplateToForm(false);
pFormParent->InsertChild(pNewNode, nullptr);
if (bRecursive) {
for (CXFA_Node* pTemplateChild = pTemplateNode->GetFirstChild();
pTemplateChild; pTemplateChild = pTemplateChild->GetNextSibling()) {
if (XFA_DataMerge_NeedGenerateForm(pTemplateChild, true)) {
CXFA_Node* pNewChild = pTemplateChild->CloneTemplateToForm(true);
pNewNode->InsertChild(pNewChild, nullptr);
}
}
}
return pNewNode;
}
CXFA_Node* XFA_DataMerge_FindDataScope(CXFA_Node* pParentFormNode) {
for (CXFA_Node* pRootBoundNode = pParentFormNode;
pRootBoundNode && pRootBoundNode->IsContainerNode();
pRootBoundNode = pRootBoundNode->GetParent()) {
CXFA_Node* pDataScope = pRootBoundNode->GetBindData();
if (pDataScope)
return pDataScope;
}
return ToNode(
pParentFormNode->GetDocument()->GetXFAObject(XFA_HASHCODE_Data));
}
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