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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/cjs_runtime.h"
#include <algorithm>
#include "fpdfsdk/cpdfsdk_formfillenvironment.h"
#include "fxjs/cjs_annot.h"
#include "fxjs/cjs_app.h"
#include "fxjs/cjs_border.h"
#include "fxjs/cjs_color.h"
#include "fxjs/cjs_console.h"
#include "fxjs/cjs_display.h"
#include "fxjs/cjs_document.h"
#include "fxjs/cjs_event.h"
#include "fxjs/cjs_event_context.h"
#include "fxjs/cjs_eventhandler.h"
#include "fxjs/cjs_field.h"
#include "fxjs/cjs_font.h"
#include "fxjs/cjs_global.h"
#include "fxjs/cjs_globalarrays.h"
#include "fxjs/cjs_globalconsts.h"
#include "fxjs/cjs_globaldata.h"
#include "fxjs/cjs_highlight.h"
#include "fxjs/cjs_icon.h"
#include "fxjs/cjs_object.h"
#include "fxjs/cjs_position.h"
#include "fxjs/cjs_printparamsobj.h"
#include "fxjs/cjs_publicmethods.h"
#include "fxjs/cjs_report.h"
#include "fxjs/cjs_scalehow.h"
#include "fxjs/cjs_scalewhen.h"
#include "fxjs/cjs_style.h"
#include "fxjs/cjs_timerobj.h"
#include "fxjs/cjs_util.h"
#include "fxjs/cjs_zoomtype.h"
#include "fxjs/js_define.h"
#include "public/fpdf_formfill.h"
#include "third_party/base/stl_util.h"
#ifdef PDF_ENABLE_XFA
#include "fxjs/cfxjse_value.h"
#endif // PDF_ENABLE_XFA
CJS_Runtime::CJS_Runtime(CPDFSDK_FormFillEnvironment* pFormFillEnv)
: m_pFormFillEnv(pFormFillEnv),
m_bBlocking(false),
m_isolateManaged(false) {
v8::Isolate* pIsolate = nullptr;
IPDF_JSPLATFORM* pPlatform = m_pFormFillEnv->GetFormFillInfo()->m_pJsPlatform;
if (pPlatform->version <= 2) {
unsigned int embedderDataSlot = 0;
v8::Isolate* pExternalIsolate = nullptr;
if (pPlatform->version == 2) {
pExternalIsolate = static_cast<v8::Isolate*>(pPlatform->m_isolate);
embedderDataSlot = pPlatform->m_v8EmbedderSlot;
}
FXJS_Initialize(embedderDataSlot, pExternalIsolate);
}
m_isolateManaged = FXJS_GetIsolate(&pIsolate);
SetIsolate(pIsolate);
#ifdef PDF_ENABLE_XFA
v8::Isolate::Scope isolate_scope(pIsolate);
v8::HandleScope handle_scope(pIsolate);
#endif
if (m_isolateManaged || FXJS_GlobalIsolateRefCount() == 0)
DefineJSObjects();
ScopedEventContext pContext(this);
InitializeEngine();
SetFormFillEnvToDocument();
}
CJS_Runtime::~CJS_Runtime() {
NotifyObservers();
ReleaseEngine();
if (m_isolateManaged)
DisposeIsolate();
}
void CJS_Runtime::DefineJSObjects() {
v8::Isolate::Scope isolate_scope(GetIsolate());
v8::HandleScope handle_scope(GetIsolate());
v8::Local<v8::Context> context = v8::Context::New(GetIsolate());
v8::Context::Scope context_scope(context);
// The call order determines the "ObjDefID" assigned to each class.
// ObjDefIDs 0 - 2
CJS_Border::DefineJSObjects(this);
CJS_Display::DefineJSObjects(this);
CJS_Font::DefineJSObjects(this);
// ObjDefIDs 3 - 5
CJS_Highlight::DefineJSObjects(this);
CJS_Position::DefineJSObjects(this);
CJS_ScaleHow::DefineJSObjects(this);
// ObjDefIDs 6 - 8
CJS_ScaleWhen::DefineJSObjects(this);
CJS_Style::DefineJSObjects(this);
CJS_Zoomtype::DefineJSObjects(this);
// ObjDefIDs 9 - 11
CJS_App::DefineJSObjects(this);
CJS_Color::DefineJSObjects(this);
CJS_Console::DefineJSObjects(this);
// ObjDefIDs 12 - 14
CJS_Document::DefineJSObjects(this);
CJS_Event::DefineJSObjects(this);
CJS_Field::DefineJSObjects(this);
// ObjDefIDs 15 - 17
CJS_Global::DefineJSObjects(this);
CJS_Icon::DefineJSObjects(this);
CJS_Util::DefineJSObjects(this);
// ObjDefIDs 18 - 20 (these can't fail, return void).
CJS_PublicMethods::DefineJSObjects(this);
CJS_GlobalConsts::DefineJSObjects(this);
CJS_GlobalArrays::DefineJSObjects(this);
// ObjDefIDs 21 - 23.
CJS_TimerObj::DefineJSObjects(this);
CJS_PrintParamsObj::DefineJSObjects(this);
CJS_Annot::DefineJSObjects(this);
}
CJS_Runtime* CJS_Runtime::AsCJSRuntime() {
return this;
}
IJS_EventContext* CJS_Runtime::NewEventContext() {
m_EventContextArray.push_back(pdfium::MakeUnique<CJS_EventContext>(this));
return m_EventContextArray.back().get();
}
void CJS_Runtime::ReleaseEventContext(IJS_EventContext* pContext) {
ASSERT(pContext == m_EventContextArray.back().get());
m_EventContextArray.pop_back();
}
CJS_EventContext* CJS_Runtime::GetCurrentEventContext() const {
return m_EventContextArray.empty() ? nullptr
: m_EventContextArray.back().get();
}
void CJS_Runtime::SetFormFillEnvToDocument() {
v8::Isolate::Scope isolate_scope(GetIsolate());
v8::HandleScope handle_scope(GetIsolate());
v8::Local<v8::Context> context = GetV8Context();
v8::Context::Scope context_scope(context);
v8::Local<v8::Object> pThis = GetThisObj();
if (pThis.IsEmpty())
return;
CJS_Document* pJSDocument = JSGetObject<CJS_Document>(pThis);
if (!pJSDocument)
return;
pJSDocument->SetFormFillEnv(m_pFormFillEnv.Get());
}
CPDFSDK_FormFillEnvironment* CJS_Runtime::GetFormFillEnv() const {
return m_pFormFillEnv.Get();
}
Optional<IJS_Runtime::JS_Error> CJS_Runtime::ExecuteScript(
const WideString& script) {
return Execute(script);
}
bool CJS_Runtime::AddEventToSet(const FieldEvent& event) {
return m_FieldEventSet.insert(event).second;
}
void CJS_Runtime::RemoveEventFromSet(const FieldEvent& event) {
m_FieldEventSet.erase(event);
}
#ifdef PDF_ENABLE_XFA
WideString ChangeObjName(const WideString& str) {
WideString sRet = str;
sRet.Replace(L"_", L".");
return sRet;
}
bool CJS_Runtime::GetValueByNameFromGlobalObject(const ByteStringView& utf8Name,
CFXJSE_Value* pValue) {
v8::Isolate::Scope isolate_scope(GetIsolate());
v8::HandleScope handle_scope(GetIsolate());
v8::Local<v8::Context> context = GetV8Context();
v8::Context::Scope context_scope(context);
v8::Local<v8::Value> propvalue = context->Global()->Get(
v8::String::NewFromUtf8(GetIsolate(), utf8Name.unterminated_c_str(),
v8::String::kNormalString, utf8Name.GetLength()));
if (propvalue.IsEmpty()) {
pValue->SetUndefined();
return false;
}
pValue->ForceSetValue(propvalue);
return true;
}
bool CJS_Runtime::SetValueByNameInGlobalObject(const ByteStringView& utf8Name,
CFXJSE_Value* pValue) {
if (utf8Name.IsEmpty() || !pValue)
return false;
v8::Isolate* pIsolate = GetIsolate();
v8::Isolate::Scope isolate_scope(pIsolate);
v8::HandleScope handle_scope(pIsolate);
v8::Local<v8::Context> context = GetV8Context();
v8::Context::Scope context_scope(context);
v8::Local<v8::Value> propvalue =
v8::Local<v8::Value>::New(pIsolate, pValue->DirectGetValue());
context->Global()->Set(
v8::String::NewFromUtf8(pIsolate, utf8Name.unterminated_c_str(),
v8::String::kNormalString, utf8Name.GetLength()),
propvalue);
return true;
}
#endif
v8::Local<v8::Value> CJS_Runtime::MaybeCoerceToNumber(
v8::Local<v8::Value> value) {
bool bAllowNaN = false;
if (value->IsString()) {
ByteString bstr = ByteString::FromUnicode(ToWideString(value));
if (bstr.GetLength() == 0)
return value;
if (bstr == "NaN")
bAllowNaN = true;
}
v8::Isolate* pIsolate = GetIsolate();
v8::TryCatch try_catch(pIsolate);
v8::MaybeLocal<v8::Number> maybeNum =
value->ToNumber(pIsolate->GetCurrentContext());
if (maybeNum.IsEmpty())
return value;
v8::Local<v8::Number> num = maybeNum.ToLocalChecked();
if (std::isnan(num->Value()) && !bAllowNaN)
return value;
return num;
}
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