// 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 <utility> #include <vector> #include "core/fxcrt/unowned_ptr.h" #include "fxjs/cfxjs_engine.h" #include "fxjs/cjs_object.h" #include "fxjs/cjs_return.h" #include "fxjs/js_resources.h" #include "third_party/base/ptr_util.h" 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_Return (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_Return 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_Return (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_Return result = (pObj.Get()->*M)(pRuntime, value); if (result.HasError()) { pRuntime->Error(JSFormatErrorString(class_name_string, prop_name_string, result.Error())); } } template <class C, CJS_Return (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_Return 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_