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1 // Copyright 2014 PDFium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4 
5 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
6 
7 #ifndef FXJS_CJS_RUNTIME_H_
8 #define FXJS_CJS_RUNTIME_H_
9 
10 #include <map>
11 #include <memory>
12 #include <set>
13 #include <utility>
14 #include <vector>
15 
16 #include "core/fxcrt/observable.h"
17 #include "fpdfsdk/cpdfsdk_formfillenvironment.h"
18 #include "fxjs/cjs_eventhandler.h"
19 #include "fxjs/fxjs_v8.h"
20 #include "fxjs/ijs_runtime.h"
21 
22 class CJS_EventContext;
23 
24 class CJS_Runtime : public IJS_Runtime,
25                     public CFXJS_Engine,
26                     public Observable<CJS_Runtime> {
27  public:
28   using FieldEvent = std::pair<WideString, JS_EVENT_T>;
29 
30   static CJS_Runtime* CurrentRuntimeFromIsolate(v8::Isolate* pIsolate);
31 
32   explicit CJS_Runtime(CPDFSDK_FormFillEnvironment* pFormFillEnv);
33   ~CJS_Runtime() override;
34 
35   // IJS_Runtime
36   IJS_EventContext* NewEventContext() override;
37   void ReleaseEventContext(IJS_EventContext* pContext) override;
38   CPDFSDK_FormFillEnvironment* GetFormFillEnv() const override;
39   int ExecuteScript(const WideString& script, WideString* info) override;
40 
41   CJS_EventContext* GetCurrentEventContext() const;
42 
43   // Returns true if the event isn't already found in the set.
44   bool AddEventToSet(const FieldEvent& event);
45   void RemoveEventFromSet(const FieldEvent& event);
46 
BeginBlock()47   void BeginBlock() { m_bBlocking = true; }
EndBlock()48   void EndBlock() { m_bBlocking = false; }
IsBlocking()49   bool IsBlocking() const { return m_bBlocking; }
50 
51   // Attempt to convert the |value| into a number. If successful the number
52   // value will be returned, otherwise |value| is returned.
53   v8::Local<v8::Value> MaybeCoerceToNumber(v8::Local<v8::Value> value);
54 
55 #ifdef PDF_ENABLE_XFA
56   bool GetValueByName(const ByteStringView& utf8Name,
57                       CFXJSE_Value* pValue) override;
58   bool SetValueByName(const ByteStringView& utf8Name,
59                       CFXJSE_Value* pValue) override;
60 #endif  // PDF_ENABLE_XFA
61 
62  private:
63   void DefineJSObjects();
64   void SetFormFillEnvToDocument();
65 
66   std::vector<std::unique_ptr<CJS_EventContext>> m_EventContextArray;
67   CPDFSDK_FormFillEnvironment::ObservedPtr m_pFormFillEnv;
68   bool m_bBlocking;
69   bool m_isolateManaged;
70   std::set<FieldEvent> m_FieldEventSet;
71 };
72 
73 #endif  // FXJS_CJS_RUNTIME_H_
74