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      1 // Copyright 2016 PDFium Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
      6 
      7 #include "xfa/fxfa/parser/cxfa_object.h"
      8 
      9 #include <utility>
     10 
     11 #include "core/fxcrt/fx_extension.h"
     12 #include "fxjs/cfxjse_engine.h"
     13 #include "fxjs/cfxjse_value.h"
     14 #include "third_party/base/ptr_util.h"
     15 #include "xfa/fxfa/cxfa_ffnotify.h"
     16 #include "xfa/fxfa/parser/cxfa_document.h"
     17 #include "xfa/fxfa/parser/cxfa_node.h"
     18 #include "xfa/fxfa/parser/cxfa_treelist.h"
     19 
     20 CXFA_Object::CXFA_Object(CXFA_Document* pDocument,
     21                          XFA_ObjectType objectType,
     22                          XFA_Element elementType,
     23                          const WideStringView& elementName,
     24                          std::unique_ptr<CJX_Object> jsObject)
     25     : CFXJSE_HostObject(kXFA),
     26       m_pDocument(pDocument),
     27       m_objectType(objectType),
     28       m_elementType(elementType),
     29       m_elementNameHash(FX_HashCode_GetW(elementName, false)),
     30       m_elementName(elementName),
     31       m_pJSObject(std::move(jsObject)) {}
     32 
     33 CXFA_Object::~CXFA_Object() {}
     34 
     35 WideString CXFA_Object::GetSOMExpression() {
     36   CFXJSE_Engine* pScriptContext = m_pDocument->GetScriptContext();
     37   if (!pScriptContext)
     38     return WideString();
     39 
     40   return pScriptContext->GetSomExpression(ToNode(this));
     41 }
     42 
     43 CXFA_Node* CXFA_Object::AsNode() {
     44   return IsNode() ? static_cast<CXFA_Node*>(this) : nullptr;
     45 }
     46 
     47 CXFA_TreeList* CXFA_Object::AsTreeList() {
     48   return IsTreeList() ? static_cast<CXFA_TreeList*>(this) : nullptr;
     49 }
     50 
     51 const CXFA_Node* CXFA_Object::AsNode() const {
     52   return IsNode() ? static_cast<const CXFA_Node*>(this) : nullptr;
     53 }
     54 
     55 const CXFA_TreeList* CXFA_Object::AsTreeList() const {
     56   return IsTreeList() ? static_cast<const CXFA_TreeList*>(this) : nullptr;
     57 }
     58 
     59 void CXFA_Object::CreateWidgetAcc() {
     60   acc_ = pdfium::MakeUnique<CXFA_WidgetAcc>(AsNode());
     61 }
     62 
     63 CXFA_Node* ToNode(CXFA_Object* pObj) {
     64   return pObj ? pObj->AsNode() : nullptr;
     65 }
     66 
     67 const CXFA_Node* ToNode(const CXFA_Object* pObj) {
     68   return pObj ? pObj->AsNode() : nullptr;
     69 }
     70