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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 "fxjs/xfa/cfxjse_engine.h"
#include <utility>
#include "core/fxcrt/autorestorer.h"
#include "core/fxcrt/cfx_widetextbuf.h"
#include "core/fxcrt/fx_extension.h"
#include "fxjs/cjs_runtime.h"
#include "fxjs/fxv8.h"
#include "fxjs/xfa/cfxjse_class.h"
#include "fxjs/xfa/cfxjse_context.h"
#include "fxjs/xfa/cfxjse_formcalc_context.h"
#include "fxjs/xfa/cfxjse_isolatetracker.h"
#include "fxjs/xfa/cfxjse_nodehelper.h"
#include "fxjs/xfa/cfxjse_resolveprocessor.h"
#include "fxjs/xfa/cfxjse_value.h"
#include "fxjs/xfa/cjx_object.h"
#include "third_party/base/stl_util.h"
#include "xfa/fxfa/cxfa_eventparam.h"
#include "xfa/fxfa/cxfa_ffdoc.h"
#include "xfa/fxfa/cxfa_ffnotify.h"
#include "xfa/fxfa/parser/cxfa_document.h"
#include "xfa/fxfa/parser/cxfa_localemgr.h"
#include "xfa/fxfa/parser/cxfa_node.h"
#include "xfa/fxfa/parser/cxfa_object.h"
#include "xfa/fxfa/parser/cxfa_thisproxy.h"
#include "xfa/fxfa/parser/xfa_basic_data.h"
#include "xfa/fxfa/parser/xfa_utils.h"
using pdfium::fxjse::kClassTag;
const FXJSE_CLASS_DESCRIPTOR GlobalClassDescriptor = {
kClassTag, // tag
"Root", // name
nullptr, // methods
0, // method count
CFXJSE_Engine::GlobalPropTypeGetter,
CFXJSE_Engine::GlobalPropertyGetter,
CFXJSE_Engine::GlobalPropertySetter,
CFXJSE_Engine::NormalMethodCall,
};
const FXJSE_CLASS_DESCRIPTOR NormalClassDescriptor = {
kClassTag, // tag
"XFAObject", // name
nullptr, // methods
0, // method count
CFXJSE_Engine::NormalPropTypeGetter,
CFXJSE_Engine::NormalPropertyGetter,
CFXJSE_Engine::NormalPropertySetter,
CFXJSE_Engine::NormalMethodCall,
};
const FXJSE_CLASS_DESCRIPTOR VariablesClassDescriptor = {
kClassTag, // tag
"XFAScriptObject", // name
nullptr, // methods
0, // method count
CFXJSE_Engine::NormalPropTypeGetter,
CFXJSE_Engine::GlobalPropertyGetter,
CFXJSE_Engine::GlobalPropertySetter,
CFXJSE_Engine::NormalMethodCall,
};
namespace {
const char kFormCalcRuntime[] = "pfm_rt";
} // namespace
CFXJSE_Engine::ResolveResult::ResolveResult() = default;
CFXJSE_Engine::ResolveResult::ResolveResult(const ResolveResult& that) =
default;
CFXJSE_Engine::ResolveResult& CFXJSE_Engine::ResolveResult::operator=(
const ResolveResult& that) = default;
CFXJSE_Engine::ResolveResult::~ResolveResult() = default;
// static
CXFA_Object* CFXJSE_Engine::ToObject(
const v8::FunctionCallbackInfo<v8::Value>& info) {
return ToObject(info.GetIsolate(), info.Holder());
}
// static
CXFA_Object* CFXJSE_Engine::ToObject(v8::Isolate* pIsolate,
v8::Local<v8::Value> value) {
if (!value->IsObject())
return nullptr;
return ToObject(FXJSE_RetrieveObjectBinding(value.As<v8::Object>()));
}
// static.
CXFA_Object* CFXJSE_Engine::ToObject(v8::Isolate* pIsolate,
CFXJSE_Value* pValue) {
return ToObject(pValue->ToHostObject(pIsolate));
}
// static
CXFA_Object* CFXJSE_Engine::ToObject(CFXJSE_HostObject* pHostObj) {
if (!pHostObj)
return nullptr;
CJX_Object* pJSObject = pHostObj->AsCJXObject();
return pJSObject ? pJSObject->GetXFAObject() : nullptr;
}
CFXJSE_Engine::CFXJSE_Engine(CXFA_Document* pDocument,
CJS_Runtime* fxjs_runtime)
: CFX_V8(fxjs_runtime->GetIsolate()),
m_pSubordinateRuntime(fxjs_runtime),
m_pDocument(pDocument),
m_JsContext(CFXJSE_Context::Create(fxjs_runtime->GetIsolate(),
&GlobalClassDescriptor,
pDocument->GetRoot()->JSObject(),
nullptr)),
m_ResolveProcessor(std::make_unique<CFXJSE_ResolveProcessor>()) {
RemoveBuiltInObjs(m_JsContext.get());
m_JsContext->EnableCompatibleMode();
// Don't know if this can happen before we remove the builtin objs and set
// compatibility mode.
m_pJsClass =
CFXJSE_Class::Create(m_JsContext.get(), &NormalClassDescriptor, false);
}
CFXJSE_Engine::~CFXJSE_Engine() {
// This is what ensures that the v8 object bound to a CJX_Object
// no longer retains that binding since it will outlive that object.
CFXJSE_ScopeUtil_IsolateHandleContext scope(GetJseContext());
for (const auto& pair : m_mapObjectToObject) {
const v8::Global<v8::Object>& binding = pair.second;
FXJSE_ClearObjectBinding(v8::Local<v8::Object>::New(GetIsolate(), binding));
}
}
bool CFXJSE_Engine::RunScript(CXFA_Script::Type eScriptType,
WideStringView wsScript,
CFXJSE_Value* hRetValue,
CXFA_Object* pThisObject) {
CFXJSE_ScopeUtil_IsolateHandleContext scope(GetJseContext());
AutoRestorer<CXFA_Script::Type> typeRestorer(&m_eScriptType);
m_eScriptType = eScriptType;
ByteString btScript;
if (eScriptType == CXFA_Script::Type::Formcalc) {
if (!m_FM2JSContext) {
m_FM2JSContext = std::make_unique<CFXJSE_FormCalcContext>(
GetIsolate(), m_JsContext.get(), m_pDocument.Get());
}
Optional<CFX_WideTextBuf> wsJavaScript =
CFXJSE_FormCalcContext::Translate(m_pDocument->GetHeap(), wsScript);
if (!wsJavaScript.has_value()) {
hRetValue->SetUndefined(GetIsolate());
return false;
}
btScript = FX_UTF8Encode(wsJavaScript.value().AsStringView());
} else {
btScript = FX_UTF8Encode(wsScript);
}
AutoRestorer<cppgc::Persistent<CXFA_Object>> nodeRestorer(&m_pThisObject);
m_pThisObject = pThisObject;
v8::Local<v8::Object> pThisBinding;
if (pThisObject)
pThisBinding = GetOrCreateJSBindingFromMap(pThisObject);
IJS_Runtime::ScopedEventContext ctx(m_pSubordinateRuntime.Get());
return m_JsContext->ExecuteScript(btScript.c_str(), hRetValue, pThisBinding);
}
bool CFXJSE_Engine::QueryNodeByFlag(CXFA_Node* refNode,
WideStringView propname,
v8::Local<v8::Value>* pValue,
XFA_ResolveNodeMask dwFlag) {
if (!refNode)
return false;
Optional<CFXJSE_Engine::ResolveResult> maybeResult =
ResolveObjects(refNode, propname, dwFlag);
if (!maybeResult.has_value())
return false;
if (maybeResult.value().type == ResolveResult::Type::kNodes) {
*pValue =
GetOrCreateJSBindingFromMap(maybeResult.value().objects.front().Get());
return true;
}
if (maybeResult.value().type == ResolveResult::Type::kAttribute &&
maybeResult.value().script_attribute.callback) {
CJX_Object* jsObject = maybeResult.value().objects.front()->JSObject();
(*maybeResult.value().script_attribute.callback)(
GetIsolate(), jsObject, pValue, false,
maybeResult.value().script_attribute.attribute);
}
return true;
}
bool CFXJSE_Engine::UpdateNodeByFlag(CXFA_Node* refNode,
WideStringView propname,
v8::Local<v8::Value> pValue,
XFA_ResolveNodeMask dwFlag) {
if (!refNode)
return false;
Optional<CFXJSE_Engine::ResolveResult> maybeResult =
ResolveObjects(refNode, propname, dwFlag);
if (!maybeResult.has_value())
return false;
if (maybeResult.value().type == ResolveResult::Type::kAttribute &&
maybeResult.value().script_attribute.callback) {
CJX_Object* jsObject = maybeResult.value().objects.front()->JSObject();
(*maybeResult.value().script_attribute.callback)(
GetIsolate(), jsObject, &pValue, true,
maybeResult.value().script_attribute.attribute);
}
return true;
}
// static
void CFXJSE_Engine::GlobalPropertySetter(v8::Isolate* pIsolate,
v8::Local<v8::Object> pObject,
ByteStringView szPropName,
v8::Local<v8::Value> pValue) {
CXFA_Object* pOriginalNode = ToObject(pIsolate, pObject);
CXFA_Document* pDoc = pOriginalNode->GetDocument();
CFXJSE_Engine* pScriptContext = pDoc->GetScriptContext();
CXFA_Node* pRefNode = ToNode(pScriptContext->GetThisObject());
if (pOriginalNode->IsThisProxy())
pRefNode = ToNode(pScriptContext->GetVariablesThis(pOriginalNode));
WideString wsPropName = WideString::FromUTF8(szPropName);
if (pScriptContext->UpdateNodeByFlag(
pRefNode, wsPropName.AsStringView(), pValue,
XFA_RESOLVENODE_Parent | XFA_RESOLVENODE_Siblings |
XFA_RESOLVENODE_Children | XFA_RESOLVENODE_Properties |
XFA_RESOLVENODE_Attributes)) {
return;
}
if (pOriginalNode->IsThisProxy() && fxv8::IsUndefined(pValue)) {
fxv8::ReentrantDeleteObjectPropertyHelper(pScriptContext->GetIsolate(),
pObject, szPropName);
return;
}
CXFA_FFNotify* pNotify = pDoc->GetNotify();
if (!pNotify)
return;
CXFA_FFDoc* hDoc = pNotify->GetFFDoc();
auto* pCJSRuntime = static_cast<CJS_Runtime*>(hDoc->GetIJSRuntime());
if (!pCJSRuntime)
return;
IJS_Runtime::ScopedEventContext pContext(pCJSRuntime);
pCJSRuntime->SetValueByNameInGlobalObject(szPropName, pValue);
}
// static
v8::Local<v8::Value> CFXJSE_Engine::GlobalPropertyGetter(
v8::Isolate* pIsolate,
v8::Local<v8::Object> pObject,
ByteStringView szPropName) {
CXFA_Object* pOriginalObject = ToObject(pIsolate, pObject);
CXFA_Document* pDoc = pOriginalObject->GetDocument();
CFXJSE_Engine* pScriptContext = pDoc->GetScriptContext();
WideString wsPropName = WideString::FromUTF8(szPropName);
// Assume failure.
v8::Local<v8::Value> pValue = fxv8::NewUndefinedHelper(pIsolate);
if (pScriptContext->GetType() == CXFA_Script::Type::Formcalc) {
if (szPropName == kFormCalcRuntime)
return pScriptContext->m_FM2JSContext->GlobalPropertyGetter();
XFA_HashCode uHashCode =
static_cast<XFA_HashCode>(FX_HashCode_GetW(wsPropName.AsStringView()));
if (uHashCode != XFA_HASHCODE_Layout) {
CXFA_Object* pObj =
pScriptContext->GetDocument()->GetXFAObject(uHashCode);
if (pObj)
return pScriptContext->GetOrCreateJSBindingFromMap(pObj);
}
}
CXFA_Node* pRefNode = ToNode(pScriptContext->GetThisObject());
if (pOriginalObject->IsThisProxy())
pRefNode = ToNode(pScriptContext->GetVariablesThis(pOriginalObject));
if (pScriptContext->QueryNodeByFlag(
pRefNode, wsPropName.AsStringView(), &pValue,
XFA_RESOLVENODE_Children | XFA_RESOLVENODE_Properties |
XFA_RESOLVENODE_Attributes)) {
return pValue;
}
if (pScriptContext->QueryNodeByFlag(
pRefNode, wsPropName.AsStringView(), &pValue,
XFA_RESOLVENODE_Parent | XFA_RESOLVENODE_Siblings)) {
return pValue;
}
CXFA_Object* pScriptObject =
pScriptContext->GetVariablesScript(pOriginalObject);
if (pScriptObject && pScriptContext->QueryVariableValue(
pScriptObject->AsNode(), szPropName, &pValue)) {
return pValue;
}
CXFA_FFNotify* pNotify = pDoc->GetNotify();
if (!pNotify)
return pValue;
CXFA_FFDoc* hDoc = pNotify->GetFFDoc();
auto* pCJSRuntime = static_cast<CJS_Runtime*>(hDoc->GetIJSRuntime());
if (!pCJSRuntime)
return pValue;
IJS_Runtime::ScopedEventContext pContext(pCJSRuntime);
v8::Local<v8::Value> temp_value =
pCJSRuntime->GetValueByNameFromGlobalObject(szPropName);
return !temp_value.IsEmpty() ? temp_value : pValue;
}
// static
int32_t CFXJSE_Engine::GlobalPropTypeGetter(v8::Isolate* pIsolate,
v8::Local<v8::Object> pHolder,
ByteStringView szPropName,
bool bQueryIn) {
CXFA_Object* pObject = ToObject(pIsolate, pHolder);
if (!pObject)
return FXJSE_ClassPropType_None;
CFXJSE_Engine* pScriptContext = pObject->GetDocument()->GetScriptContext();
pObject = pScriptContext->GetVariablesThis(pObject);
WideString wsPropName = WideString::FromUTF8(szPropName);
if (pObject->JSObject()->HasMethod(wsPropName))
return FXJSE_ClassPropType_Method;
return FXJSE_ClassPropType_Property;
}
// static
v8::Local<v8::Value> CFXJSE_Engine::NormalPropertyGetter(
v8::Isolate* pIsolate,
v8::Local<v8::Object> pHolder,
ByteStringView szPropName) {
CXFA_Object* pOriginalObject = ToObject(pIsolate, pHolder);
if (!pOriginalObject)
return fxv8::NewUndefinedHelper(pIsolate);
CFXJSE_Engine* pScriptContext =
pOriginalObject->GetDocument()->GetScriptContext();
WideString wsPropName = WideString::FromUTF8(szPropName);
if (wsPropName.EqualsASCII("xfa")) {
return pScriptContext->GetOrCreateJSBindingFromMap(
pScriptContext->GetDocument()->GetRoot());
}
v8::Local<v8::Value> pReturnValue = fxv8::NewUndefinedHelper(pIsolate);
CXFA_Object* pObject = pScriptContext->GetVariablesThis(pOriginalObject);
CXFA_Node* pRefNode = ToNode(pObject);
if (pScriptContext->QueryNodeByFlag(
pRefNode, wsPropName.AsStringView(), &pReturnValue,
XFA_RESOLVENODE_Children | XFA_RESOLVENODE_Properties |
XFA_RESOLVENODE_Attributes)) {
return pReturnValue;
}
if (pObject == pScriptContext->GetThisObject() ||
(pScriptContext->GetType() == CXFA_Script::Type::Javascript &&
!pScriptContext->IsStrictScopeInJavaScript())) {
if (pScriptContext->QueryNodeByFlag(
pRefNode, wsPropName.AsStringView(), &pReturnValue,
XFA_RESOLVENODE_Parent | XFA_RESOLVENODE_Siblings)) {
return pReturnValue;
}
}
CXFA_Object* pScriptObject =
pScriptContext->GetVariablesScript(pOriginalObject);
if (!pScriptObject)
return pReturnValue;
if (pScriptContext->QueryVariableValue(ToNode(pScriptObject), szPropName,
&pReturnValue)) {
return pReturnValue;
}
Optional<XFA_SCRIPTATTRIBUTEINFO> info = XFA_GetScriptAttributeByName(
pObject->GetElementType(), wsPropName.AsStringView());
if (info.has_value()) {
(*info.value().callback)(pIsolate, pObject->JSObject(), &pReturnValue,
false, info.value().attribute);
return pReturnValue;
}
CXFA_FFNotify* pNotify = pObject->GetDocument()->GetNotify();
if (!pNotify)
return pReturnValue;
CXFA_FFDoc* hDoc = pNotify->GetFFDoc();
auto* pCJSRuntime = static_cast<CJS_Runtime*>(hDoc->GetIJSRuntime());
if (!pCJSRuntime)
return pReturnValue;
IJS_Runtime::ScopedEventContext pContext(pCJSRuntime);
v8::Local<v8::Value> temp_local =
pCJSRuntime->GetValueByNameFromGlobalObject(szPropName);
return !temp_local.IsEmpty() ? temp_local : pReturnValue;
}
// static
void CFXJSE_Engine::NormalPropertySetter(v8::Isolate* pIsolate,
v8::Local<v8::Object> pHolder,
ByteStringView szPropName,
v8::Local<v8::Value> pValue) {
CXFA_Object* pOriginalObject = ToObject(pIsolate, pHolder);
if (!pOriginalObject)
return;
CFXJSE_Engine* pScriptContext =
pOriginalObject->GetDocument()->GetScriptContext();
CXFA_Object* pObject = pScriptContext->GetVariablesThis(pOriginalObject);
WideString wsPropName = WideString::FromUTF8(szPropName);
WideStringView wsPropNameView = wsPropName.AsStringView();
Optional<XFA_SCRIPTATTRIBUTEINFO> info =
XFA_GetScriptAttributeByName(pObject->GetElementType(), wsPropNameView);
if (info.has_value()) {
CJX_Object* jsObject = pObject->JSObject();
(*info.value().callback)(pIsolate, jsObject, &pValue, true,
info.value().attribute);
return;
}
if (pObject->IsNode()) {
if (wsPropNameView[0] == '#')
wsPropNameView = wsPropNameView.Last(wsPropNameView.GetLength() - 1);
CXFA_Node* pNode = ToNode(pObject);
CXFA_Node* pPropOrChild = nullptr;
XFA_Element eType = XFA_GetElementByName(wsPropNameView);
if (eType != XFA_Element::Unknown) {
pPropOrChild =
pNode->JSObject()->GetOrCreateProperty<CXFA_Node>(0, eType);
} else {
pPropOrChild = pNode->GetFirstChildByName(wsPropNameView);
}
if (pPropOrChild) {
info = XFA_GetScriptAttributeByName(pPropOrChild->GetElementType(),
L"{default}");
if (info.has_value()) {
pPropOrChild->JSObject()->ScriptSomDefaultValue(pIsolate, &pValue, true,
XFA_Attribute::Unknown);
return;
}
}
}
CXFA_Object* pScriptObject =
pScriptContext->GetVariablesScript(pOriginalObject);
if (pScriptObject) {
pScriptContext->UpdateVariableValue(ToNode(pScriptObject), szPropName,
pValue);
}
}
int32_t CFXJSE_Engine::NormalPropTypeGetter(v8::Isolate* pIsolate,
v8::Local<v8::Object> pHolder,
ByteStringView szPropName,
bool bQueryIn) {
CXFA_Object* pObject = ToObject(pIsolate, pHolder);
if (!pObject)
return FXJSE_ClassPropType_None;
CFXJSE_Engine* pScriptContext = pObject->GetDocument()->GetScriptContext();
pObject = pScriptContext->GetVariablesThis(pObject);
XFA_Element eType = pObject->GetElementType();
WideString wsPropName = WideString::FromUTF8(szPropName);
if (pObject->JSObject()->HasMethod(wsPropName))
return FXJSE_ClassPropType_Method;
if (bQueryIn) {
Optional<XFA_SCRIPTATTRIBUTEINFO> maybe_info =
XFA_GetScriptAttributeByName(eType, wsPropName.AsStringView());
if (!maybe_info.has_value())
return FXJSE_ClassPropType_None;
}
return FXJSE_ClassPropType_Property;
}
CJS_Result CFXJSE_Engine::NormalMethodCall(
const v8::FunctionCallbackInfo<v8::Value>& info,
const WideString& functionName) {
CXFA_Object* pObject = ToObject(info);
if (!pObject)
return CJS_Result::Failure(L"no Holder() present.");
CFXJSE_Engine* pScriptContext = pObject->GetDocument()->GetScriptContext();
pObject = pScriptContext->GetVariablesThis(pObject);
std::vector<v8::Local<v8::Value>> parameters;
for (int i = 0; i < info.Length(); i++)
parameters.push_back(info[i]);
return pObject->JSObject()->RunMethod(functionName, parameters);
}
bool CFXJSE_Engine::IsStrictScopeInJavaScript() {
return m_pDocument->is_strict_scoping();
}
CXFA_Script::Type CFXJSE_Engine::GetType() {
return m_eScriptType;
}
CFXJSE_Context* CFXJSE_Engine::CreateVariablesContext(CXFA_Node* pScriptNode,
CXFA_Node* pSubform) {
if (!pScriptNode || !pSubform)
return nullptr;
auto* proxy = cppgc::MakeGarbageCollected<CXFA_ThisProxy>(
pScriptNode->GetDocument()->GetHeap()->GetAllocationHandle(), pSubform,
pScriptNode);
auto pNewContext = CFXJSE_Context::Create(
GetIsolate(), &VariablesClassDescriptor, proxy->JSObject(), proxy);
RemoveBuiltInObjs(pNewContext.get());
pNewContext->EnableCompatibleMode();
CFXJSE_Context* pResult = pNewContext.get();
m_mapVariableToContext[pScriptNode->JSObject()] = std::move(pNewContext);
return pResult;
}
CXFA_Object* CFXJSE_Engine::GetVariablesThis(CXFA_Object* pObject) {
CXFA_ThisProxy* pProxy = ToThisProxy(pObject);
return pProxy ? pProxy->GetThisNode() : pObject;
}
CXFA_Object* CFXJSE_Engine::GetVariablesScript(CXFA_Object* pObject) {
CXFA_ThisProxy* pProxy = ToThisProxy(pObject);
return pProxy ? pProxy->GetScriptNode() : pObject;
}
bool CFXJSE_Engine::RunVariablesScript(CXFA_Node* pScriptNode) {
if (!pScriptNode)
return false;
if (pScriptNode->GetElementType() != XFA_Element::Script)
return true;
CXFA_Node* pParent = pScriptNode->GetParent();
if (!pParent || pParent->GetElementType() != XFA_Element::Variables)
return false;
auto it = m_mapVariableToContext.find(pScriptNode->JSObject());
if (it != m_mapVariableToContext.end() && it->second)
return true;
CXFA_Node* pTextNode = pScriptNode->GetFirstChild();
if (!pTextNode)
return false;
Optional<WideString> wsScript =
pTextNode->JSObject()->TryCData(XFA_Attribute::Value, true);
if (!wsScript.has_value())
return false;
ByteString btScript = wsScript->ToUTF8();
auto hRetValue = std::make_unique<CFXJSE_Value>();
CXFA_Node* pThisObject = pParent->GetParent();
CFXJSE_Context* pVariablesContext =
CreateVariablesContext(pScriptNode, pThisObject);
AutoRestorer<cppgc::Persistent<CXFA_Object>> nodeRestorer(&m_pThisObject);
m_pThisObject = pThisObject;
return pVariablesContext->ExecuteScript(btScript.c_str(), hRetValue.get(),
v8::Local<v8::Object>());
}
CFXJSE_Context* CFXJSE_Engine::VariablesContextForScriptNode(
CXFA_Node* pScriptNode) {
if (!pScriptNode || pScriptNode->GetElementType() != XFA_Element::Script)
return nullptr;
CXFA_Node* variablesNode = pScriptNode->GetParent();
if (!variablesNode ||
variablesNode->GetElementType() != XFA_Element::Variables) {
return nullptr;
}
auto it = m_mapVariableToContext.find(pScriptNode->JSObject());
return it != m_mapVariableToContext.end() ? it->second.get() : nullptr;
}
bool CFXJSE_Engine::QueryVariableValue(CXFA_Node* pScriptNode,
ByteStringView szPropName,
v8::Local<v8::Value>* pValue) {
CFXJSE_Context* pVariableContext = VariablesContextForScriptNode(pScriptNode);
if (!pVariableContext)
return false;
v8::Local<v8::Object> pObject = pVariableContext->GetGlobalObject();
if (!fxv8::ReentrantHasObjectOwnPropertyHelper(GetIsolate(), pObject,
szPropName)) {
return false;
}
v8::Local<v8::Value> hVariableValue =
fxv8::ReentrantGetObjectPropertyHelper(GetIsolate(), pObject, szPropName);
if (fxv8::IsFunction(hVariableValue)) {
v8::Local<v8::Function> maybeFunc = CFXJSE_Value::NewBoundFunction(
GetIsolate(), hVariableValue.As<v8::Function>(), pObject);
if (!maybeFunc.IsEmpty())
*pValue = maybeFunc;
} else {
*pValue = hVariableValue;
}
return true;
}
bool CFXJSE_Engine::UpdateVariableValue(CXFA_Node* pScriptNode,
ByteStringView szPropName,
v8::Local<v8::Value> pValue) {
CFXJSE_Context* pVariableContext = VariablesContextForScriptNode(pScriptNode);
if (!pVariableContext)
return false;
v8::Local<v8::Object> pObject = pVariableContext->GetGlobalObject();
fxv8::ReentrantSetObjectOwnPropertyHelper(GetIsolate(), pObject, szPropName,
pValue);
return true;
}
void CFXJSE_Engine::RemoveBuiltInObjs(CFXJSE_Context* pContext) {
CFXJSE_ScopeUtil_IsolateHandleContext scope(GetJseContext());
v8::Local<v8::Object> pObject = pContext->GetGlobalObject();
fxv8::ReentrantDeleteObjectPropertyHelper(GetIsolate(), pObject, "Number");
fxv8::ReentrantDeleteObjectPropertyHelper(GetIsolate(), pObject, "Date");
}
Optional<CFXJSE_Engine::ResolveResult> CFXJSE_Engine::ResolveObjects(
CXFA_Object* refObject,
WideStringView wsExpression,
XFA_ResolveNodeMask dwStyles) {
return ResolveObjectsWithBindNode(refObject, wsExpression, dwStyles, nullptr);
}
Optional<CFXJSE_Engine::ResolveResult>
CFXJSE_Engine::ResolveObjectsWithBindNode(CXFA_Object* refObject,
WideStringView wsExpression,
XFA_ResolveNodeMask dwStyles,
CXFA_Node* bindNode) {
if (wsExpression.IsEmpty())
return pdfium::nullopt;
ResolveResult result;
if (m_eScriptType != CXFA_Script::Type::Formcalc ||
(dwStyles & (XFA_RESOLVENODE_Parent | XFA_RESOLVENODE_Siblings))) {
m_upObjectArray.clear();
}
if (refObject && refObject->IsNode() &&
(dwStyles & (XFA_RESOLVENODE_Parent | XFA_RESOLVENODE_Siblings))) {
m_upObjectArray.push_back(refObject->AsNode());
}
bool bNextCreate = false;
CFXJSE_NodeHelper* pNodeHelper = m_ResolveProcessor->GetNodeHelper();
if (dwStyles & XFA_RESOLVENODE_CreateNode)
pNodeHelper->SetCreateNodeType(bindNode);
pNodeHelper->m_pCreateParent = nullptr;
pNodeHelper->m_iCurAllStart = -1;
CFXJSE_ResolveNodeData rndFind(this);
int32_t nStart = 0;
int32_t nLevel = 0;
std::vector<cppgc::Member<CXFA_Object>> findObjects;
findObjects.emplace_back(refObject ? refObject : m_pDocument->GetRoot());
int32_t nNodes = 0;
while (true) {
nNodes = pdfium::CollectionSize<int32_t>(findObjects);
int32_t i = 0;
rndFind.m_dwStyles = dwStyles;
m_ResolveProcessor->SetCurStart(nStart);
nStart = m_ResolveProcessor->GetFilter(wsExpression, nStart, rndFind);
if (nStart < 1) {
if ((dwStyles & XFA_RESOLVENODE_CreateNode) && !bNextCreate) {
CXFA_Node* pDataNode = nullptr;
nStart = pNodeHelper->m_iCurAllStart;
if (nStart != -1) {
pDataNode = m_pDocument->GetNotBindNode(findObjects);
if (pDataNode) {
findObjects.clear();
findObjects.emplace_back(pDataNode);
break;
}
} else {
pDataNode = findObjects.front()->AsNode();
findObjects.clear();
findObjects.emplace_back(pDataNode);
break;
}
dwStyles |= XFA_RESOLVENODE_Bind;
findObjects.clear();
findObjects.emplace_back(pNodeHelper->m_pAllStartParent.Get());
continue;
}
break;
}
if (bNextCreate) {
int32_t checked_length =
pdfium::base::checked_cast<int32_t>(wsExpression.GetLength());
if (pNodeHelper->CreateNode(rndFind.m_wsName, rndFind.m_wsCondition,
nStart == checked_length, this)) {
continue;
}
break;
}
std::vector<cppgc::Member<CXFA_Object>> retObjects;
while (i < nNodes) {
bool bDataBind = false;
if (((dwStyles & XFA_RESOLVENODE_Bind) ||
(dwStyles & XFA_RESOLVENODE_CreateNode)) &&
nNodes > 1) {
CFXJSE_ResolveNodeData rndBind(nullptr);
m_ResolveProcessor->GetFilter(wsExpression, nStart, rndBind);
i = m_ResolveProcessor->IndexForDataBind(rndBind.m_wsCondition, nNodes);
bDataBind = true;
}
rndFind.m_CurObject = findObjects[i++].Get();
rndFind.m_nLevel = nLevel;
rndFind.m_Result.type = ResolveResult::Type::kNodes;
if (!m_ResolveProcessor->Resolve(GetIsolate(), rndFind))
continue;
if (rndFind.m_Result.type == ResolveResult::Type::kAttribute &&
rndFind.m_Result.script_attribute.callback &&
nStart <
pdfium::base::checked_cast<int32_t>(wsExpression.GetLength())) {
v8::Local<v8::Value> pValue;
CJX_Object* jsObject = rndFind.m_Result.objects.front()->JSObject();
(*rndFind.m_Result.script_attribute.callback)(
GetIsolate(), jsObject, &pValue, false,
rndFind.m_Result.script_attribute.attribute);
if (!pValue.IsEmpty()) {
rndFind.m_Result.objects.front() = ToObject(GetIsolate(), pValue);
}
}
if (!m_upObjectArray.empty())
m_upObjectArray.pop_back();
retObjects.insert(retObjects.end(), rndFind.m_Result.objects.begin(),
rndFind.m_Result.objects.end());
rndFind.m_Result.objects.clear();
if (bDataBind)
break;
}
findObjects.clear();
nNodes = pdfium::CollectionSize<int32_t>(retObjects);
if (nNodes < 1) {
if (dwStyles & XFA_RESOLVENODE_CreateNode) {
bNextCreate = true;
if (!pNodeHelper->m_pCreateParent) {
pNodeHelper->m_pCreateParent = ToNode(rndFind.m_CurObject.Get());
pNodeHelper->m_iCreateCount = 1;
}
int32_t checked_length =
pdfium::base::checked_cast<int32_t>(wsExpression.GetLength());
if (pNodeHelper->CreateNode(rndFind.m_wsName, rndFind.m_wsCondition,
nStart == checked_length, this)) {
continue;
}
}
break;
}
findObjects = std::move(retObjects);
rndFind.m_Result.objects.clear();
if (nLevel == 0)
dwStyles &= ~(XFA_RESOLVENODE_Parent | XFA_RESOLVENODE_Siblings);
nLevel++;
}
if (!bNextCreate) {
result.type = rndFind.m_Result.type;
if (nNodes > 0) {
result.objects.insert(result.objects.end(), findObjects.begin(),
findObjects.end());
}
if (rndFind.m_Result.type == ResolveResult::Type::kAttribute) {
result.script_attribute = rndFind.m_Result.script_attribute;
return result;
}
}
if (dwStyles & (XFA_RESOLVENODE_CreateNode | XFA_RESOLVENODE_Bind |
XFA_RESOLVENODE_BindNew)) {
if (pNodeHelper->m_pCreateParent)
result.objects.emplace_back(pNodeHelper->m_pCreateParent.Get());
else
pNodeHelper->CreateNodeForCondition(rndFind.m_wsCondition);
result.type = pNodeHelper->m_iCreateFlag;
if (result.type == ResolveResult::Type::kCreateNodeOne) {
if (pNodeHelper->m_iCurAllStart != -1)
result.type = ResolveResult::Type::kCreateNodeMidAll;
}
if (!bNextCreate && (dwStyles & XFA_RESOLVENODE_CreateNode))
result.type = ResolveResult::Type::kExistNodes;
if (result.objects.empty())
return pdfium::nullopt;
return result;
}
if (nNodes == 0)
return pdfium::nullopt;
return result;
}
v8::Local<v8::Object> CFXJSE_Engine::GetOrCreateJSBindingFromMap(
CXFA_Object* pObject) {
if (pObject->IsNode())
RunVariablesScript(pObject->AsNode());
CJX_Object* pCJXObject = pObject->JSObject();
auto iter = m_mapObjectToObject.find(pCJXObject);
if (iter != m_mapObjectToObject.end())
return v8::Local<v8::Object>::New(GetIsolate(), iter->second);
v8::Local<v8::Object> binding = pCJXObject->NewBoundV8Object(
GetIsolate(), m_pJsClass->GetTemplate(GetIsolate()));
m_mapObjectToObject[pCJXObject].Reset(GetIsolate(), binding);
return binding;
}
void CFXJSE_Engine::SetNodesOfRunScript(
std::vector<cppgc::Persistent<CXFA_Node>>* pArray) {
m_pScriptNodeArray = pArray;
}
void CFXJSE_Engine::AddNodesOfRunScript(CXFA_Node* pNode) {
if (m_pScriptNodeArray && !pdfium::Contains(*m_pScriptNodeArray, pNode))
m_pScriptNodeArray->emplace_back(pNode);
}
CXFA_Object* CFXJSE_Engine::ToXFAObject(v8::Local<v8::Value> obj) {
if (!fxv8::IsObject(obj))
return nullptr;
CFXJSE_HostObject* pHostObj =
FXJSE_RetrieveObjectBinding(obj.As<v8::Object>());
if (!pHostObj)
return nullptr;
CJX_Object* pJSObject = pHostObj->AsCJXObject();
return pJSObject ? pJSObject->GetXFAObject() : nullptr;
}
v8::Local<v8::Object> CFXJSE_Engine::NewNormalXFAObject(CXFA_Object* obj) {
v8::EscapableHandleScope scope(GetIsolate());
v8::Local<v8::Object> object = obj->JSObject()->NewBoundV8Object(
GetIsolate(), GetJseNormalClass()->GetTemplate(GetIsolate()));
return scope.Escape(object);
}