bindings/jni/jni_instance.h

   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 _JNI_INSTANCE_H_
  27 #define _JNI_INSTANCE_H_
  28
  29 #if ENABLE(JAVA_BINDINGS)
  30
  31 #include "runtime.h"
  32
  33 #include <JavaVM/jni.h>
  34
  35
  36 namespace KJS {
  37
  38 namespace Bindings {
  39
  40 class JavaClass;
  41
  42 class JObjectWrapper
  43 {
  44 friend class RefPtr<JObjectWrapper>;
  45 friend class JavaArray;
  46 friend class JavaField;
  47 friend class JavaInstance;
  48 friend class JavaMethod;
  49
  50 protected:
  51     JObjectWrapper(jobject instance);
  52     ~JObjectWrapper();
  53
  54     void ref() { _refCount++; }
  55     void deref()
  56     {
  57         if (--_refCount == 0)
  58             delete this;
  59     }
  60
  61     jobject _instance;
  62
  63 private:
  64     JNIEnv *_env;
  65     unsigned int _refCount;
  66 };
  67
  68 class JavaInstance : public Instance
  69 {
  70 public:
  71     JavaInstance(jobject instance, PassRefPtr<RootObject>);
  72     ~JavaInstance();
  73
  74     virtual Class *getClass() const;
  75
  76     virtual void begin();
  77     virtual void end();
  78
  79     virtual JSValue *valueOf() const;
  80     virtual JSValue *defaultValue (JSType hint) const;
  81
  82     virtual JSValue *invokeMethod (ExecState *exec, const MethodList &method, const List &args);
  83
  84     jobject javaInstance() const { return _instance->_instance; }
  85
  86     JSValue *stringValue() const;
  87     JSValue *numberValue() const;
  88     JSValue *booleanValue() const;
  89
  90     virtual BindingLanguage getBindingLanguage() const { return JavaLanguage; }
  91
  92 private:
  93     RefPtr<JObjectWrapper> _instance;
  94     mutable JavaClass *_class;
  95 };
  96
  97 } // namespace Bindings
  98
  99 } // namespace KJS
 100
 101 #endif // ENABLE(JAVA_BINDINGS)
 102
 103 #endif // _JNI_INSTANCE_H_