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      1 /*
      2  * Copyright (C) 2003 Apple Computer, Inc.  All rights reserved.
      3  *
      4  * Redistribution and use in source and binary forms, with or without
      5  * modification, are permitted provided that the following conditions
      6  * are met:
      7  * 1. Redistributions of source code must retain the above copyright
      8  *    notice, this list of conditions and the following disclaimer.
      9  * 2. Redistributions in binary form must reproduce the above copyright
     10  *    notice, this list of conditions and the following disclaimer in the
     11  *    documentation and/or other materials provided with the distribution.
     12  *
     13  * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
     14  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     15  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     16  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
     17  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
     18  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
     19  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
     20  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
     21  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     22  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     23  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     24  */
     25 
     26 #ifndef JavaInstanceJSC_h
     27 #define JavaInstanceJSC_h
     28 
     29 #if ENABLE(MAC_JAVA_BRIDGE)
     30 
     31 #include "Bridge.h"
     32 #include "runtime_root.h"
     33 
     34 #include <JavaVM/jni.h>
     35 
     36 namespace JSC {
     37 
     38 namespace Bindings {
     39 
     40 class JavaClass;
     41 
     42 class JObjectWrapper {
     43 friend class RefPtr<JObjectWrapper>;
     44 friend class JavaArray;
     45 friend class JavaField;
     46 friend class JavaInstance;
     47 friend class JavaMethod;
     48 
     49 public:
     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 
     60 protected:
     61     JObjectWrapper(jobject instance);
     62     ~JObjectWrapper();
     63 
     64     jobject m_instance;
     65 
     66 private:
     67     JNIEnv* m_env;
     68     unsigned int m_refCount;
     69 };
     70 
     71 class JavaInstance : public Instance {
     72 public:
     73     static PassRefPtr<JavaInstance> create(jobject instance, PassRefPtr<RootObject> rootObject)
     74     {
     75         return adoptRef(new JavaInstance(instance, rootObject));
     76     }
     77 
     78     ~JavaInstance();
     79 
     80     virtual Class* getClass() const;
     81 
     82     virtual JSValue valueOf(ExecState*) const;
     83     virtual JSValue defaultValue(ExecState*, PreferredPrimitiveType) const;
     84 
     85     virtual JSValue invokeMethod(ExecState* exec, const MethodList& method, const ArgList& args);
     86 
     87     jobject javaInstance() const { return m_instance->m_instance; }
     88 
     89     JSValue stringValue(ExecState*) const;
     90     JSValue numberValue(ExecState*) const;
     91     JSValue booleanValue() const;
     92 
     93 protected:
     94     JavaInstance(jobject instance, PassRefPtr<RootObject>);
     95     virtual void virtualBegin();
     96     virtual void virtualEnd();
     97 
     98     RefPtr<JObjectWrapper> m_instance;
     99     mutable JavaClass* m_class;
    100 };
    101 
    102 } // namespace Bindings
    103 
    104 } // namespace JSC
    105 
    106 #endif // ENABLE(MAC_JAVA_BRIDGE)
    107 
    108 #endif // JavaInstanceJSC_h
    109