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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
#ifndef FXJS_JS_DEFINE_H_
#define FXJS_JS_DEFINE_H_
#include <vector>
#include "core/fxcrt/unowned_ptr.h"
#include "fxjs/cfxjs_engine.h"
#include "fxjs/cjs_result.h"
#include "fxjs/cjs_runtime.h"
#include "fxjs/js_resources.h"
#include "third_party/base/ptr_util.h"
class CJS_Object;
double JS_GetDateTime();
int JS_GetYearFromTime(double dt);
int JS_GetMonthFromTime(double dt);
int JS_GetDayFromTime(double dt);
int JS_GetHourFromTime(double dt);
int JS_GetMinFromTime(double dt);
int JS_GetSecFromTime(double dt);
double JS_LocalTime(double d);
double JS_DateParse(const WideString& str);
double JS_MakeDay(int nYear, int nMonth, int nDay);
double JS_MakeTime(int nHour, int nMin, int nSec, int nMs);
double JS_MakeDate(double day, double time);
// Some JS methods have the bizarre convention that they may also be called
// with a single argument which is an object containing the actual arguments
// as its properties. The varying arguments to this method are the property
// names as wchar_t string literals corresponding to each positional argument.
// The result will always contain |nKeywords| value, with unspecified ones
// being set to type VT_unknown.
std::vector<v8::Local<v8::Value>> ExpandKeywordParams(
CJS_Runtime* pRuntime,
const std::vector<v8::Local<v8::Value>>& originals,
size_t nKeywords,
...);
// All JS classes have a name, an object defintion ID, and the ability to
// register themselves with FXJS_V8. We never make a BASE class on its own
// because it can't really do anything.
// Rich JS classes provide constants, methods, properties, and the ability
// to construct native object state.
template <class T>
static void JSConstructor(CFXJS_Engine* pEngine, v8::Local<v8::Object> obj) {
pEngine->SetObjectPrivate(
obj, pdfium::MakeUnique<T>(obj, static_cast<CJS_Runtime*>(pEngine)));
}
// CJS_Object has virtual dtor, template not required.
void JSDestructor(v8::Local<v8::Object> obj);
template <class C>
UnownedPtr<C> JSGetObject(v8::Local<v8::Object> obj) {
if (CFXJS_Engine::GetObjDefnID(obj) != C::GetObjDefnID())
return nullptr;
CJS_Object* pJSObj = CFXJS_Engine::GetObjectPrivate(obj);
if (!pJSObj)
return nullptr;
return UnownedPtr<C>(static_cast<C*>(pJSObj));
}
template <class C, CJS_Result (C::*M)(CJS_Runtime*)>
void JSPropGetter(const char* prop_name_string,
const char* class_name_string,
v8::Local<v8::String> property,
const v8::PropertyCallbackInfo<v8::Value>& info) {
auto pObj = JSGetObject<C>(info.Holder());
if (!pObj)
return;
CJS_Runtime* pRuntime = pObj->GetRuntime();
if (!pRuntime)
return;
CJS_Result result = (pObj.Get()->*M)(pRuntime);
if (result.HasError()) {
pRuntime->Error(JSFormatErrorString(class_name_string, prop_name_string,
result.Error()));
return;
}
if (result.HasReturn())
info.GetReturnValue().Set(result.Return());
}
template <class C, CJS_Result (C::*M)(CJS_Runtime*, v8::Local<v8::Value>)>
void JSPropSetter(const char* prop_name_string,
const char* class_name_string,
v8::Local<v8::String> property,
v8::Local<v8::Value> value,
const v8::PropertyCallbackInfo<void>& info) {
auto pObj = JSGetObject<C>(info.Holder());
if (!pObj)
return;
CJS_Runtime* pRuntime = pObj->GetRuntime();
if (!pRuntime)
return;
CJS_Result result = (pObj.Get()->*M)(pRuntime, value);
if (result.HasError()) {
pRuntime->Error(JSFormatErrorString(class_name_string, prop_name_string,
result.Error()));
}
}
template <class C,
CJS_Result (C::*M)(CJS_Runtime*,
const std::vector<v8::Local<v8::Value>>&)>
void JSMethod(const char* method_name_string,
const char* class_name_string,
const v8::FunctionCallbackInfo<v8::Value>& info) {
auto pObj = JSGetObject<C>(info.Holder());
if (!pObj)
return;
CJS_Runtime* pRuntime = pObj->GetRuntime();
if (!pRuntime)
return;
std::vector<v8::Local<v8::Value>> parameters;
for (unsigned int i = 0; i < (unsigned int)info.Length(); i++)
parameters.push_back(info[i]);
CJS_Result result = (pObj.Get()->*M)(pRuntime, parameters);
if (result.HasError()) {
pRuntime->Error(JSFormatErrorString(class_name_string, method_name_string,
result.Error()));
return;
}
if (result.HasReturn())
info.GetReturnValue().Set(result.Return());
}
#define JS_STATIC_PROP(err_name, prop_name, class_name) \
static void get_##prop_name##_static( \
v8::Local<v8::String> property, \
const v8::PropertyCallbackInfo<v8::Value>& info) { \
JSPropGetter<class_name, &class_name::get_##prop_name>( \
#err_name, class_name::kName, property, info); \
} \
static void set_##prop_name##_static( \
v8::Local<v8::String> property, v8::Local<v8::Value> value, \
const v8::PropertyCallbackInfo<void>& info) { \
JSPropSetter<class_name, &class_name::set_##prop_name>( \
#err_name, class_name::kName, property, value, info); \
}
#define JS_STATIC_METHOD(method_name, class_name) \
static void method_name##_static( \
const v8::FunctionCallbackInfo<v8::Value>& info) { \
JSMethod<class_name, &class_name::method_name>(#method_name, \
class_name::kName, info); \
}
#endif // FXJS_JS_DEFINE_H_
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