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      1 /*
      2  * Copyright (C) 2004 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 #include "config.h"
     27 
     28 #if ENABLE(JAVA_BRIDGE)
     29 
     30 #import <Foundation/Foundation.h>
     31 #import "JNIUtilityPrivate.h"
     32 #import "JavaType.h"
     33 #import "objc_utility.h"
     34 #include <runtime/JSLock.h>
     35 
     36 using namespace JSC::Bindings;
     37 
     38 @interface NSObject (WebScriptingPrivate)
     39 - (jvalue)webPlugInCallJava:(jobject)object method:(jmethodID)method returnType:(JavaType)returnType arguments:(jvalue*)args;
     40 - (jvalue)webPlugInCallJava:(jobject)object
     41                    isStatic:(BOOL)isStatic
     42                  returnType:(JavaType)returnType
     43                      method:(jmethodID)method
     44                   arguments:(jvalue*)args
     45                  callingURL:(NSURL *)url
     46        exceptionDescription:(NSString **)exceptionString;
     47 @end
     48 
     49 bool JSC::Bindings::dispatchJNICall(ExecState* exec, const void* targetAppletView, jobject obj, bool isStatic, JavaType returnType, jmethodID methodID, jvalue* args, jvalue &result, const char*, JSValue& exceptionDescription)
     50 {
     51     id view = (id)targetAppletView;
     52 
     53     // As JavaTypeArray is not known by the Mac JVM, change it to a compatible type.
     54     if (returnType == JavaTypeArray)
     55         returnType = JavaTypeObject;
     56 
     57     if ([view respondsToSelector:@selector(webPlugInCallJava:isStatic:returnType:method:arguments:callingURL:exceptionDescription:)]) {
     58         NSString *_exceptionDescription = 0;
     59 
     60         // Passing nil as the calling URL will cause the Java plugin to use the URL
     61         // of the page that contains the applet. The execution restrictions
     62         // implemented in WebCore will guarantee that only appropriate JavaScript
     63         // can reference the applet.
     64         {
     65            JSLock::DropAllLocks dropAllLocks(SilenceAssertionsOnly);
     66             result = [view webPlugInCallJava:obj isStatic:isStatic returnType:returnType method:methodID arguments:args callingURL:nil exceptionDescription:&_exceptionDescription];
     67         }
     68 
     69         if (_exceptionDescription != 0) {
     70             exceptionDescription = convertNSStringToString(exec, _exceptionDescription);
     71         }
     72         return true;
     73     }
     74     else if ([view respondsToSelector:@selector(webPlugInCallJava:method:returnType:arguments:)]) {
     75         JSLock::DropAllLocks dropAllLocks(SilenceAssertionsOnly);
     76         result = [view webPlugInCallJava:obj method:methodID returnType:returnType arguments:args];
     77         return true;
     78     }
     79 
     80     bzero (&result, sizeof(jvalue));
     81     return false;
     82 }
     83 
     84 #endif // ENABLE(JAVA_BRIDGE)
     85