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// Copyright 2017 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_event_context.h"
#include "core/fpdfdoc/cpdf_formfield.h"
#include "core/fxcrt/autorestorer.h"
#include "fpdfsdk/cpdfsdk_formfillenvironment.h"
#include "fxjs/cjs_field.h"
#include "fxjs/cjs_runtime.h"
#include "fxjs/js_define.h"
#include "fxjs/js_resources.h"
#include "third_party/base/check.h"
#include "v8/include/v8-context.h"
#include "v8/include/v8-isolate.h"
CJS_EventContext::CJS_EventContext(CJS_Runtime* pRuntime)
: m_pRuntime(pRuntime), m_pFormFillEnv(pRuntime->GetFormFillEnv()) {}
CJS_EventContext::~CJS_EventContext() = default;
absl::optional<IJS_Runtime::JS_Error> CJS_EventContext::RunScript(
const WideString& script) {
v8::Isolate::Scope isolate_scope(m_pRuntime->GetIsolate());
v8::HandleScope handle_scope(m_pRuntime->GetIsolate());
v8::Local<v8::Context> context = m_pRuntime->GetV8Context();
v8::Context::Scope context_scope(context);
if (m_bBusy) {
return IJS_Runtime::JS_Error(1, 1,
JSGetStringFromID(JSMessage::kBusyError));
}
AutoRestorer<bool> restorer(&m_bBusy);
m_bBusy = true;
DCHECK(IsValid());
CJS_Runtime::FieldEvent event(TargetName(), EventKind());
if (!m_pRuntime->AddEventToSet(event)) {
return IJS_Runtime::JS_Error(
1, 1, JSGetStringFromID(JSMessage::kDuplicateEventError));
}
absl::optional<IJS_Runtime::JS_Error> err;
if (script.GetLength() > 0)
err = m_pRuntime->ExecuteScript(script);
m_pRuntime->RemoveEventFromSet(event);
Destroy();
return err;
}
CJS_Field* CJS_EventContext::SourceField() {
v8::Local<v8::Object> pDocObj = m_pRuntime->NewFXJSBoundObject(
CJS_Document::GetObjDefnID(), FXJSOBJTYPE_DYNAMIC);
if (pDocObj.IsEmpty())
return nullptr;
v8::Local<v8::Object> pFieldObj = m_pRuntime->NewFXJSBoundObject(
CJS_Field::GetObjDefnID(), FXJSOBJTYPE_DYNAMIC);
if (pFieldObj.IsEmpty())
return nullptr;
auto* pFormFillEnv = GetFormFillEnv();
auto* pJSDocument = static_cast<CJS_Document*>(
CFXJS_Engine::GetObjectPrivate(m_pRuntime->GetIsolate(), pDocObj));
pJSDocument->SetFormFillEnv(pFormFillEnv);
auto* pJSField = static_cast<CJS_Field*>(
CFXJS_Engine::GetObjectPrivate(m_pRuntime->GetIsolate(), pFieldObj));
pJSField->AttachField(pJSDocument, SourceName());
return pJSField;
}
CJS_Field* CJS_EventContext::TargetField() {
v8::Local<v8::Object> pDocObj = m_pRuntime->NewFXJSBoundObject(
CJS_Document::GetObjDefnID(), FXJSOBJTYPE_DYNAMIC);
if (pDocObj.IsEmpty())
return nullptr;
v8::Local<v8::Object> pFieldObj = m_pRuntime->NewFXJSBoundObject(
CJS_Field::GetObjDefnID(), FXJSOBJTYPE_DYNAMIC);
if (pFieldObj.IsEmpty())
return nullptr;
auto* pFormFillEnv = GetFormFillEnv();
auto* pJSDocument = static_cast<CJS_Document*>(
CFXJS_Engine::GetObjectPrivate(m_pRuntime->GetIsolate(), pDocObj));
pJSDocument->SetFormFillEnv(pFormFillEnv);
auto* pJSField = static_cast<CJS_Field*>(
CFXJS_Engine::GetObjectPrivate(m_pRuntime->GetIsolate(), pFieldObj));
pJSField->AttachField(pJSDocument, TargetName());
return pJSField;
}
void CJS_EventContext::OnDoc_Open(const WideString& strTargetName) {
Initialize(Kind::kDocOpen);
m_strTargetName = strTargetName;
}
void CJS_EventContext::OnDoc_WillPrint() {
Initialize(Kind::kDocWillPrint);
}
void CJS_EventContext::OnDoc_DidPrint() {
Initialize(Kind::kDocDidPrint);
}
void CJS_EventContext::OnDoc_WillSave() {
Initialize(Kind::kDocWillSave);
}
void CJS_EventContext::OnDoc_DidSave() {
Initialize(Kind::kDocDidSave);
}
void CJS_EventContext::OnDoc_WillClose() {
Initialize(Kind::kDocWillClose);
}
void CJS_EventContext::OnPage_Open() {
Initialize(Kind::kPageOpen);
}
void CJS_EventContext::OnPage_Close() {
Initialize(Kind::kPageClose);
}
void CJS_EventContext::OnPage_InView() {
Initialize(Kind::kPageInView);
}
void CJS_EventContext::OnPage_OutView() {
Initialize(Kind::kPageOutView);
}
void CJS_EventContext::OnField_MouseEnter(bool bModifier,
bool bShift,
CPDF_FormField* pTarget) {
Initialize(Kind::kFieldMouseEnter);
m_bModifier = bModifier;
m_bShift = bShift;
m_strTargetName = pTarget->GetFullName();
}
void CJS_EventContext::OnField_MouseExit(bool bModifier,
bool bShift,
CPDF_FormField* pTarget) {
Initialize(Kind::kFieldMouseExit);
m_bModifier = bModifier;
m_bShift = bShift;
m_strTargetName = pTarget->GetFullName();
}
void CJS_EventContext::OnField_MouseDown(bool bModifier,
bool bShift,
CPDF_FormField* pTarget) {
Initialize(Kind::kFieldMouseDown);
m_bModifier = bModifier;
m_bShift = bShift;
m_strTargetName = pTarget->GetFullName();
}
void CJS_EventContext::OnField_MouseUp(bool bModifier,
bool bShift,
CPDF_FormField* pTarget) {
Initialize(Kind::kFieldMouseUp);
m_bModifier = bModifier;
m_bShift = bShift;
m_strTargetName = pTarget->GetFullName();
}
void CJS_EventContext::OnField_Focus(bool bModifier,
bool bShift,
CPDF_FormField* pTarget,
WideString* pValue) {
DCHECK(pValue);
Initialize(Kind::kFieldFocus);
m_bModifier = bModifier;
m_bShift = bShift;
m_strTargetName = pTarget->GetFullName();
m_pValue = pValue;
}
void CJS_EventContext::OnField_Blur(bool bModifier,
bool bShift,
CPDF_FormField* pTarget,
WideString* pValue) {
DCHECK(pValue);
Initialize(Kind::kFieldBlur);
m_bModifier = bModifier;
m_bShift = bShift;
m_strTargetName = pTarget->GetFullName();
m_pValue = pValue;
}
void CJS_EventContext::OnField_Keystroke(WideString* strChange,
const WideString& strChangeEx,
bool KeyDown,
bool bModifier,
int* pSelEnd,
int* pSelStart,
bool bShift,
CPDF_FormField* pTarget,
WideString* pValue,
bool bWillCommit,
bool bFieldFull,
bool* pbRc) {
DCHECK(pValue);
DCHECK(pbRc);
DCHECK(pSelStart);
DCHECK(pSelEnd);
Initialize(Kind::kFieldKeystroke);
m_nCommitKey = 0;
m_pWideStrChange = strChange;
m_WideStrChangeEx = strChangeEx;
m_bKeyDown = KeyDown;
m_bModifier = bModifier;
m_pISelEnd = pSelEnd;
m_pISelStart = pSelStart;
m_bShift = bShift;
m_strTargetName = pTarget->GetFullName();
m_pValue = pValue;
m_bWillCommit = bWillCommit;
m_pbRc = pbRc;
m_bFieldFull = bFieldFull;
}
void CJS_EventContext::OnField_Validate(WideString* strChange,
const WideString& strChangeEx,
bool bKeyDown,
bool bModifier,
bool bShift,
CPDF_FormField* pTarget,
WideString* pValue,
bool* pbRc) {
DCHECK(pValue);
DCHECK(pbRc);
Initialize(Kind::kFieldValidate);
m_pWideStrChange = strChange;
m_WideStrChangeEx = strChangeEx;
m_bKeyDown = bKeyDown;
m_bModifier = bModifier;
m_bShift = bShift;
m_strTargetName = pTarget->GetFullName();
m_pValue = pValue;
m_pbRc = pbRc;
}
void CJS_EventContext::OnField_Calculate(CPDF_FormField* pSource,
CPDF_FormField* pTarget,
WideString* pValue,
bool* pRc) {
DCHECK(pValue);
DCHECK(pRc);
Initialize(Kind::kFieldCalculate);
if (pSource)
m_strSourceName = pSource->GetFullName();
m_strTargetName = pTarget->GetFullName();
m_pValue = pValue;
m_pbRc = pRc;
}
void CJS_EventContext::OnField_Format(CPDF_FormField* pTarget,
WideString* pValue) {
DCHECK(pValue);
Initialize(Kind::kFieldFormat);
m_nCommitKey = 0;
m_strTargetName = pTarget->GetFullName();
m_pValue = pValue;
m_bWillCommit = true;
}
void CJS_EventContext::OnExternal_Exec() {
Initialize(Kind::kExternalExec);
}
void CJS_EventContext::Initialize(Kind kind) {
m_eKind = kind;
m_strTargetName.clear();
m_strSourceName.clear();
m_pWideStrChange = nullptr;
m_WideStrChangeDu.clear();
m_WideStrChangeEx.clear();
m_nCommitKey = -1;
m_bKeyDown = false;
m_bModifier = false;
m_bShift = false;
m_pISelEnd = nullptr;
m_nSelEndDu = 0;
m_pISelStart = nullptr;
m_nSelStartDu = 0;
m_bWillCommit = false;
m_pValue = nullptr;
m_bFieldFull = false;
m_pbRc = nullptr;
m_bRcDu = false;
m_bValid = true;
}
void CJS_EventContext::Destroy() {
m_bValid = false;
}
bool CJS_EventContext::IsUserGesture() const {
switch (m_eKind) {
case Kind::kFieldMouseDown:
case Kind::kFieldMouseUp:
case Kind::kFieldKeystroke:
return true;
default:
return false;
}
}
WideString& CJS_EventContext::Change() {
return m_pWideStrChange ? *m_pWideStrChange : m_WideStrChangeDu;
}
ByteStringView CJS_EventContext::Name() const {
switch (m_eKind) {
case Kind::kDocDidPrint:
return "DidPrint";
case Kind::kDocDidSave:
return "DidSave";
case Kind::kDocOpen:
return "Open";
case Kind::kDocWillClose:
return "WillClose";
case Kind::kDocWillPrint:
return "WillPrint";
case Kind::kDocWillSave:
return "WillSave";
case Kind::kExternalExec:
return "Exec";
case Kind::kFieldFocus:
return "Focus";
case Kind::kFieldBlur:
return "Blur";
case Kind::kFieldMouseDown:
return "Mouse Down";
case Kind::kFieldMouseUp:
return "Mouse Up";
case Kind::kFieldMouseEnter:
return "Mouse Enter";
case Kind::kFieldMouseExit:
return "Mouse Exit";
case Kind::kFieldCalculate:
return "Calculate";
case Kind::kFieldFormat:
return "Format";
case Kind::kFieldKeystroke:
return "Keystroke";
case Kind::kFieldValidate:
return "Validate";
case Kind::kPageOpen:
return "Open";
case Kind::kPageClose:
return "Close";
case Kind::kPageInView:
return "InView";
case Kind::kPageOutView:
return "OutView";
default:
return "";
}
}
ByteStringView CJS_EventContext::Type() const {
switch (m_eKind) {
case Kind::kDocDidPrint:
case Kind::kDocDidSave:
case Kind::kDocOpen:
case Kind::kDocWillClose:
case Kind::kDocWillPrint:
case Kind::kDocWillSave:
return "Doc";
case Kind::kExternalExec:
return "External";
case Kind::kFieldBlur:
case Kind::kFieldFocus:
case Kind::kFieldMouseDown:
case Kind::kFieldMouseUp:
case Kind::kFieldMouseEnter:
case Kind::kFieldMouseExit:
case Kind::kFieldCalculate:
case Kind::kFieldFormat:
case Kind::kFieldKeystroke:
case Kind::kFieldValidate:
return "Field";
case Kind::kPageOpen:
case Kind::kPageClose:
case Kind::kPageInView:
case Kind::kPageOutView:
return "Page";
default:
return "";
}
}
bool& CJS_EventContext::Rc() {
return m_pbRc ? *m_pbRc : m_bRcDu;
}
int CJS_EventContext::SelEnd() const {
return m_pISelEnd ? *m_pISelEnd : m_nSelEndDu;
}
int CJS_EventContext::SelStart() const {
return m_pISelStart ? *m_pISelStart : m_nSelStartDu;
}
void CJS_EventContext::SetSelEnd(int value) {
int& target = m_pISelEnd ? *m_pISelEnd : m_nSelEndDu;
target = value;
}
void CJS_EventContext::SetSelStart(int value) {
int& target = m_pISelStart ? *m_pISelStart : m_nSelStartDu;
target = value;
}