1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
|
// 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
// CFXJS_ENGINE is a layer that makes it easier to define native objects in V8,
// but has no knowledge of PDF-specific native objects. It could in theory be
// used to implement other sets of native objects.
// PDFium code should include this file rather than including V8 headers
// directly.
#ifndef FXJS_CFXJS_ENGINE_H_
#define FXJS_CFXJS_ENGINE_H_
#include <functional>
#include <map>
#include <memory>
#include <vector>
#include "core/fxcrt/fx_string.h"
#include "fxjs/cfx_v8.h"
#include "fxjs/ijs_runtime.h"
#include "v8/include/v8-util.h"
#include "v8/include/v8.h"
#ifdef PDF_ENABLE_XFA
// CFXJS_ENGINE doesn't interpret this class, it is just passed along to XFA.
class CFXJSE_RuntimeData;
#endif // PDF_ENABLE_XFA
class CFXJS_ObjDefinition;
class CJS_Object;
class V8TemplateMap;
// CFXJS_ENGINE places no restrictions on this class; it merely passes it
// on to caller-provided methods.
class IJS_EventContext; // A description of the event that caused JS execution.
enum FXJSOBJTYPE {
FXJSOBJTYPE_DYNAMIC = 0, // Created by native method and returned to JS.
FXJSOBJTYPE_STATIC, // Created by init and hung off of global object.
FXJSOBJTYPE_GLOBAL, // The global object itself (may only appear once).
};
class FXJS_PerIsolateData {
public:
~FXJS_PerIsolateData();
static void SetUp(v8::Isolate* pIsolate);
static FXJS_PerIsolateData* Get(v8::Isolate* pIsolate);
std::vector<std::unique_ptr<CFXJS_ObjDefinition>> m_ObjectDefnArray;
#ifdef PDF_ENABLE_XFA
std::unique_ptr<CFXJSE_RuntimeData> m_pFXJSERuntimeData;
#endif // PDF_ENABLE_XFA
std::unique_ptr<V8TemplateMap> m_pDynamicObjsMap;
protected:
explicit FXJS_PerIsolateData(v8::Isolate* pIsolate);
};
void FXJS_Initialize(unsigned int embedderDataSlot, v8::Isolate* pIsolate);
void FXJS_Release();
// Gets the global isolate set by FXJS_Initialize(), or makes a new one each
// time if there is no such isolate. Returns true if a new isolate had to be
// created.
bool FXJS_GetIsolate(v8::Isolate** pResultIsolate);
// Get the global isolate's ref count.
size_t FXJS_GlobalIsolateRefCount();
class CFXJS_Engine : public CFX_V8 {
public:
explicit CFXJS_Engine(v8::Isolate* pIsolate);
~CFXJS_Engine() override;
using Constructor =
std::function<void(CFXJS_Engine* pEngine, v8::Local<v8::Object> obj)>;
using Destructor = std::function<void(v8::Local<v8::Object> obj)>;
static int GetObjDefnID(v8::Local<v8::Object> pObj);
static CJS_Object* GetObjectPrivate(v8::Local<v8::Object> pObj);
static void SetObjectPrivate(v8::Local<v8::Object> pObj,
std::unique_ptr<CJS_Object> p);
static void FreeObjectPrivate(v8::Local<v8::Object> pObj);
// Always returns a valid, newly-created objDefnID.
int DefineObj(const char* sObjName,
FXJSOBJTYPE eObjType,
Constructor pConstructor,
Destructor pDestructor);
void DefineObjMethod(int nObjDefnID,
const char* sMethodName,
v8::FunctionCallback pMethodCall);
void DefineObjProperty(int nObjDefnID,
const char* sPropName,
v8::AccessorGetterCallback pPropGet,
v8::AccessorSetterCallback pPropPut);
void DefineObjAllProperties(int nObjDefnID,
v8::GenericNamedPropertyQueryCallback pPropQurey,
v8::GenericNamedPropertyGetterCallback pPropGet,
v8::GenericNamedPropertySetterCallback pPropPut,
v8::GenericNamedPropertyDeleterCallback pPropDel);
void DefineObjConst(int nObjDefnID,
const char* sConstName,
v8::Local<v8::Value> pDefault);
void DefineGlobalMethod(const char* sMethodName,
v8::FunctionCallback pMethodCall);
void DefineGlobalConst(const wchar_t* sConstName,
v8::FunctionCallback pConstGetter);
// Called after FXJS_Define* calls made.
void InitializeEngine();
void ReleaseEngine();
// Called after FXJS_InitializeEngine call made.
Optional<IJS_Runtime::JS_Error> Execute(const WideString& script);
v8::Local<v8::Object> GetThisObj();
v8::Local<v8::Object> NewFXJSBoundObject(int nObjDefnID,
bool bStatic = false);
void Error(const WideString& message);
v8::Local<v8::Context> GetV8Context() {
return v8::Local<v8::Context>::New(GetIsolate(), m_V8Context);
}
v8::Local<v8::Array> GetConstArray(const WideString& name);
void SetConstArray(const WideString& name, v8::Local<v8::Array> array);
protected:
CFXJS_Engine();
private:
v8::Global<v8::Context> m_V8Context;
std::vector<v8::Global<v8::Object>> m_StaticObjects;
std::map<WideString, v8::Global<v8::Array>> m_ConstArrays;
};
#endif // FXJS_CFXJS_ENGINE_H_
|
