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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 FPDFSDK_INCLUDE_JAVASCRIPT_JS_RUNTIME_H_
      8 #define FPDFSDK_INCLUDE_JAVASCRIPT_JS_RUNTIME_H_
      9 
     10 #include "../../../third_party/base/nonstd_unique_ptr.h"
     11 #include "../../../core/include/fxcrt/fx_basic.h"
     12 #include "../jsapi/fxjs_v8.h"
     13 #include "IJavaScript.h"
     14 #include "JS_EventHandler.h"
     15 
     16 class CJS_Context;
     17 
     18 class CJS_ArrayBufferAllocator : public v8::ArrayBuffer::Allocator {
     19     void* Allocate(size_t length) override;
     20     void* AllocateUninitialized(size_t length) override;
     21     void Free(void* data, size_t length) override;
     22 };
     23 
     24 class CJS_FieldEvent
     25 {
     26 public:
     27 	CFX_WideString		sTargetName;
     28 	JS_EVENT_T			eEventType;
     29 	CJS_FieldEvent*		pNext;
     30 };
     31 
     32 class CJS_Runtime : public IFXJS_Runtime
     33 {
     34 public:
     35 	CJS_Runtime(CPDFDoc_Environment * pApp);
     36 	virtual ~CJS_Runtime();
     37 
     38 	virtual IFXJS_Context *					NewContext();
     39 	virtual void							ReleaseContext(IFXJS_Context * pContext);
     40 	virtual IFXJS_Context*					GetCurrentContext();
     41 
     42 	virtual void							SetReaderDocument(CPDFSDK_Document *pReaderDoc);
     43 	virtual CPDFSDK_Document *				GetReaderDocument(){return m_pDocument;}
     44 
     45 	CPDFDoc_Environment *							GetReaderApp(){return m_pApp;}
     46 
     47 	FX_BOOL									InitJSObjects();
     48 
     49 	FX_BOOL									AddEventToLoop(const CFX_WideString& sTargetName, JS_EVENT_T eEventType);
     50 	void									RemoveEventInLoop(const CFX_WideString& sTargetName, JS_EVENT_T eEventType);
     51 	void									RemoveEventsInLoop(CJS_FieldEvent* pStart);
     52 
     53 	void									BeginBlock(){m_bBlocking = TRUE;}
     54 	void									EndBlock(){m_bBlocking = FALSE;}
     55 	FX_BOOL									IsBlocking(){return m_bBlocking;}
     56 
     57 	operator								IJS_Runtime*() {return (IJS_Runtime*)m_isolate;}
     58 	v8::Isolate*								GetIsolate(){return m_isolate;};
     59 	void									SetIsolate(v8::Isolate* isolate){m_isolate = isolate;}
     60 
     61 	v8::Local<v8::Context>							NewJSContext();
     62 protected:
     63 	CFX_ArrayTemplate<CJS_Context*>		m_ContextArray;
     64 	CPDFDoc_Environment*							m_pApp;
     65 	CPDFSDK_Document*						m_pDocument;
     66 	FX_BOOL									m_bBlocking;
     67 	FX_BOOL									m_bRegistered;
     68 	CJS_FieldEvent*							m_pFieldEventPath;
     69 
     70 	v8::Isolate* m_isolate;
     71 	nonstd::unique_ptr<CJS_ArrayBufferAllocator> m_pArrayBufferAllocator;
     72 	v8::Global<v8::Context> m_context;
     73 };
     74 
     75 #endif  // FPDFSDK_INCLUDE_JAVASCRIPT_JS_RUNTIME_H_
     76