/* 
 * Copyright 2007 Google Inc.
 * 
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not
 * use this file except in compliance with the License. You may obtain a copy of
 * the License at
 * 
 * http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 * License for the specific language governing permissions and limitations under
 * the License.
 */
#ifndef GWT_WEBKIT_H
#define GWT_WEBKIT_H

#include <jni.h>
#include <kjs/object.h>
#include "JStringWrap.h"

extern JNIEnv* gEnv;
extern jclass gClass;
extern jclass gDispObjCls;
extern jclass gDispMethCls;
extern jmethodID gSetFieldMeth;
extern jmethodID gGetFieldMeth;
extern jmethodID gInvokeMeth;
extern jmethodID gToStringMeth;

//#define FILETRACE
//#define JAVATRACE

#if defined(FILETRACE) || defined(JAVATRACE)
#define ENABLE_TRACING
#endif

#if defined(FILETRACE) && defined(JAVATRACE)
#define TRACE(s) filetrace(s),javatrace(s)
#elif defined(FILETRACE)
#define TRACE(s) filetrace(s)
#elif defined(JAVATRACE)
#define TRACE(s) javatrace(s)
#else
#define TRACE(s) ((void)0)
#endif

#ifdef FILETRACE
extern FILE* gout;
void filetrace(const char* s);
#endif // FILETRACE

#ifdef JAVATRACE
extern jmethodID gTraceMethod;
void javatrace(const char* s);
#endif // JAVATRACE

void PrintJSValue(KJS::JSValue*, char* prefix="");
void gcProtectHook(KJS::JSValue*);
void gcUnprotectHook(KJS::JSValue*, const char* trace);

/*
 * Lock KJS GC and protect the supplied value.
 * 
 * value JSValue* to protect from GC
 */
inline void gwtGCProtect(KJS::JSValue* value) {
  KJS::JSLock lock;
  gcProtectNullTolerant(value);
#ifdef ENABLE_TRACING
  gcProtectHook(value);
#endif
}

/*
 * Lock KJS GC and unprotect the supplied value.
 *
 * value JSValue* to unprotect from GC
 * trace human-readable string describing object creation location
 */
inline void gwtGCUnprotect(KJS::JSValue* value, const char* trace) {
  KJS::JSLock lock;
#ifdef ENABLE_TRACING
  gcUnprotectHook(value, trace);
#endif
  gcUnprotectNullTolerant(value);
}

#endif