1/*
2 * Copyright (C) 2003, 2008, 2010 Apple Inc. All rights reserved.
3 * Copyright 2010, The Android Open Source Project
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 *  * Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 *  * Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ``AS IS'' AND ANY
15 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
17 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR
18 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
19 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
20 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
21 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
22 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
24 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 */
26
27#ifndef JavaInstanceV8_h
28#define JavaInstanceV8_h
29
30#include "npruntime.h"
31
32#include <JavaVM/jni.h>
33#include <wtf/RefCounted.h>
34#include <wtf/RefPtr.h>
35
36using namespace WTF;
37
38namespace JSC {
39
40namespace Bindings {
41
42class JavaClass;
43
44class JObjectWrapper {
45friend class RefPtr<JObjectWrapper>;
46friend class JavaField;
47friend class JavaInstance;
48
49public:
50    jobject instance() const { return m_instance; }
51    void setInstance(jobject instance) { m_instance = instance; }
52
53    void ref() { m_refCount++; }
54    void deref()
55    {
56        if (!(--m_refCount))
57            delete this;
58    }
59
60protected:
61    JObjectWrapper(jobject);
62    ~JObjectWrapper();
63
64    jobject m_instance;
65
66private:
67    JNIEnv* m_env;
68    unsigned int m_refCount;
69};
70
71class JavaInstance : public RefCounted<JavaInstance> {
72public:
73    JavaInstance(jobject instance);
74    virtual ~JavaInstance();
75
76    JavaClass* getClass() const;
77
78    bool invokeMethod(const char* name, const NPVariant* args, int argsCount, NPVariant* result);
79
80    jobject javaInstance() const { return m_instance->m_instance; }
81
82    // These functions are called before and after the main entry points into
83    // the native implementations.  They can be used to establish and cleanup
84    // any needed state.
85    void begin() { virtualBegin(); }
86    void end() { virtualEnd(); }
87
88protected:
89    RefPtr<JObjectWrapper> m_instance;
90    mutable JavaClass* m_class;
91
92    virtual void virtualBegin() {}
93    virtual void virtualEnd() {}
94};
95
96} // namespace Bindings
97
98} // namespace JSC
99
100#endif // JavaInstanceV8_h
101