| /* |
| * Copyright (C) 2003, 2008, 2010 Apple Inc. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * |
| * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY |
| * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR |
| * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
| * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
| * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
| * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY |
| * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #include "config.h" |
| #include "JavaInstanceJSC.h" |
| |
| #if ENABLE(JAVA_BRIDGE) |
| |
| #include "JavaRuntimeObject.h" |
| #include "JNIUtilityPrivate.h" |
| #include "JSDOMBinding.h" |
| #include "JavaArrayJSC.h" |
| #include "JavaClassJSC.h" |
| #include "JavaMethod.h" |
| #include "JavaString.h" |
| #include "Logging.h" |
| #include "jni_jsobject.h" |
| #include "runtime_method.h" |
| #include "runtime_object.h" |
| #include "runtime_root.h" |
| #include <runtime/ArgList.h> |
| #include <runtime/Error.h> |
| #include <runtime/FunctionPrototype.h> |
| #include <runtime/JSLock.h> |
| |
| using namespace JSC::Bindings; |
| using namespace JSC; |
| using namespace WebCore; |
| |
| JavaInstance::JavaInstance(jobject instance, PassRefPtr<RootObject> rootObject) |
| : Instance(rootObject) |
| { |
| m_instance = new JobjectWrapper(instance); |
| m_class = 0; |
| } |
| |
| JavaInstance::~JavaInstance() |
| { |
| delete m_class; |
| } |
| |
| RuntimeObject* JavaInstance::newRuntimeObject(ExecState* exec) |
| { |
| return new (exec) JavaRuntimeObject(exec, exec->lexicalGlobalObject(), this); |
| } |
| |
| #define NUM_LOCAL_REFS 64 |
| |
| void JavaInstance::virtualBegin() |
| { |
| getJNIEnv()->PushLocalFrame(NUM_LOCAL_REFS); |
| } |
| |
| void JavaInstance::virtualEnd() |
| { |
| getJNIEnv()->PopLocalFrame(0); |
| } |
| |
| Class* JavaInstance::getClass() const |
| { |
| if (!m_class) |
| m_class = new JavaClass (m_instance->m_instance); |
| return m_class; |
| } |
| |
| JSValue JavaInstance::stringValue(ExecState* exec) const |
| { |
| JSLock lock(SilenceAssertionsOnly); |
| |
| jstring stringValue = (jstring)callJNIMethod<jobject>(m_instance->m_instance, "toString", "()Ljava/lang/String;"); |
| |
| // Should throw a JS exception, rather than returning ""? - but better than a null dereference. |
| if (!stringValue) |
| return jsString(exec, UString()); |
| |
| JNIEnv* env = getJNIEnv(); |
| const jchar* c = getUCharactersFromJStringInEnv(env, stringValue); |
| UString u((const UChar*)c, (int)env->GetStringLength(stringValue)); |
| releaseUCharactersForJStringInEnv(env, stringValue, c); |
| return jsString(exec, u); |
| } |
| |
| JSValue JavaInstance::numberValue(ExecState*) const |
| { |
| jdouble doubleValue = callJNIMethod<jdouble>(m_instance->m_instance, "doubleValue", "()D"); |
| return jsNumber(doubleValue); |
| } |
| |
| JSValue JavaInstance::booleanValue() const |
| { |
| jboolean booleanValue = callJNIMethod<jboolean>(m_instance->m_instance, "booleanValue", "()Z"); |
| return jsBoolean(booleanValue); |
| } |
| |
| class JavaRuntimeMethod : public RuntimeMethod { |
| public: |
| JavaRuntimeMethod(ExecState* exec, JSGlobalObject* globalObject, const Identifier& name, Bindings::MethodList& list) |
| // FIXME: deprecatedGetDOMStructure uses the prototype off of the wrong global object |
| // We need to pass in the right global object for "i". |
| : RuntimeMethod(exec, globalObject, WebCore::deprecatedGetDOMStructure<JavaRuntimeMethod>(exec), name, list) |
| { |
| ASSERT(inherits(&s_info)); |
| } |
| |
| static Structure* createStructure(JSGlobalData& globalData, JSValue prototype) |
| { |
| return Structure::create(globalData, prototype, TypeInfo(ObjectType, StructureFlags), AnonymousSlotCount, &s_info); |
| } |
| |
| static const ClassInfo s_info; |
| }; |
| |
| const ClassInfo JavaRuntimeMethod::s_info = { "JavaRuntimeMethod", &RuntimeMethod::s_info, 0, 0 }; |
| |
| JSValue JavaInstance::getMethod(ExecState* exec, const Identifier& propertyName) |
| { |
| MethodList methodList = getClass()->methodsNamed(propertyName, this); |
| return new (exec) JavaRuntimeMethod(exec, exec->lexicalGlobalObject(), propertyName, methodList); |
| } |
| |
| JSValue JavaInstance::invokeMethod(ExecState* exec, RuntimeMethod* runtimeMethod) |
| { |
| if (!asObject(runtimeMethod)->inherits(&JavaRuntimeMethod::s_info)) |
| return throwError(exec, createTypeError(exec, "Attempt to invoke non-Java method on Java object.")); |
| |
| const MethodList& methodList = *runtimeMethod->methods(); |
| |
| int i; |
| int count = exec->argumentCount(); |
| JSValue resultValue; |
| Method* method = 0; |
| size_t numMethods = methodList.size(); |
| |
| // Try to find a good match for the overloaded method. The |
| // fundamental problem is that JavaScript doesn't have the |
| // notion of method overloading and Java does. We could |
| // get a bit more sophisticated and attempt to does some |
| // type checking as we as checking the number of parameters. |
| for (size_t methodIndex = 0; methodIndex < numMethods; methodIndex++) { |
| Method* aMethod = methodList[methodIndex]; |
| if (aMethod->numParameters() == count) { |
| method = aMethod; |
| break; |
| } |
| } |
| if (!method) { |
| LOG(LiveConnect, "JavaInstance::invokeMethod unable to find an appropiate method"); |
| return jsUndefined(); |
| } |
| |
| const JavaMethod* jMethod = static_cast<const JavaMethod*>(method); |
| LOG(LiveConnect, "JavaInstance::invokeMethod call %s %s on %p", UString(jMethod->name().impl()).utf8().data(), jMethod->signature(), m_instance->m_instance); |
| |
| Vector<jvalue> jArgs(count); |
| |
| for (i = 0; i < count; i++) { |
| CString javaClassName = jMethod->parameterAt(i).utf8(); |
| jArgs[i] = convertValueToJValue(exec, m_rootObject.get(), exec->argument(i), javaTypeFromClassName(javaClassName.data()), javaClassName.data()); |
| LOG(LiveConnect, "JavaInstance::invokeMethod arg[%d] = %s", i, exec->argument(i).toString(exec).ascii().data()); |
| } |
| |
| jvalue result; |
| |
| // Try to use the JNI abstraction first, otherwise fall back to |
| // normal JNI. The JNI dispatch abstraction allows the Java plugin |
| // to dispatch the call on the appropriate internal VM thread. |
| RootObject* rootObject = this->rootObject(); |
| if (!rootObject) |
| return jsUndefined(); |
| |
| bool handled = false; |
| if (rootObject->nativeHandle()) { |
| jobject obj = m_instance->m_instance; |
| JSValue exceptionDescription; |
| const char *callingURL = 0; // FIXME, need to propagate calling URL to Java |
| jmethodID methodId = getMethodID(obj, jMethod->name().utf8().data(), jMethod->signature()); |
| handled = dispatchJNICall(exec, rootObject->nativeHandle(), obj, jMethod->isStatic(), jMethod->returnType(), methodId, jArgs.data(), result, callingURL, exceptionDescription); |
| if (exceptionDescription) { |
| throwError(exec, createError(exec, exceptionDescription.toString(exec))); |
| return jsUndefined(); |
| } |
| } |
| |
| // This is a deprecated code path which should not be required on Android. |
| // Remove this guard once Bug 39476 is fixed. |
| #if PLATFORM(ANDROID) || defined(BUILDING_ON_TIGER) |
| if (!handled) |
| result = callJNIMethod(m_instance->m_instance, jMethod->returnType(), jMethod->name().utf8().data(), jMethod->signature(), jArgs.data()); |
| #endif |
| |
| switch (jMethod->returnType()) { |
| case JavaTypeVoid: |
| { |
| resultValue = jsUndefined(); |
| } |
| break; |
| |
| case JavaTypeObject: |
| { |
| if (result.l) { |
| // FIXME: JavaTypeArray return type is handled below, can we actually get an array here? |
| const char* arrayType = jMethod->returnTypeClassName(); |
| if (arrayType[0] == '[') |
| resultValue = JavaArray::convertJObjectToArray(exec, result.l, arrayType, rootObject); |
| else { |
| jobject classOfInstance = callJNIMethod<jobject>(result.l, "getClass", "()Ljava/lang/Class;"); |
| jstring className = static_cast<jstring>(callJNIMethod<jobject>(classOfInstance, "getName", "()Ljava/lang/String;")); |
| if (!strcmp(JavaString(className).utf8(), "sun.plugin.javascript.webkit.JSObject")) { |
| // Pull the nativeJSObject value from the Java instance. This is a pointer to the JSObject. |
| JNIEnv* env = getJNIEnv(); |
| jfieldID fieldID = env->GetFieldID(static_cast<jclass>(classOfInstance), "nativeJSObject", "J"); |
| jlong nativeHandle = env->GetLongField(result.l, fieldID); |
| // FIXME: Handling of undefined values differs between functions in JNIUtilityPrivate.cpp and those in those in jni_jsobject.mm, |
| // and so it does between different versions of LiveConnect spec. There should not be multiple code paths to do the same work. |
| if (nativeHandle == 1 /* UndefinedHandle */) |
| return jsUndefined(); |
| return static_cast<JSObject*>(jlong_to_ptr(nativeHandle)); |
| } else |
| return JavaInstance::create(result.l, rootObject)->createRuntimeObject(exec); |
| } |
| } else |
| return jsUndefined(); |
| } |
| break; |
| |
| case JavaTypeBoolean: |
| { |
| resultValue = jsBoolean(result.z); |
| } |
| break; |
| |
| case JavaTypeByte: |
| { |
| resultValue = jsNumber(result.b); |
| } |
| break; |
| |
| case JavaTypeChar: |
| { |
| resultValue = jsNumber(result.c); |
| } |
| break; |
| |
| case JavaTypeShort: |
| { |
| resultValue = jsNumber(result.s); |
| } |
| break; |
| |
| case JavaTypeInt: |
| { |
| resultValue = jsNumber(result.i); |
| } |
| break; |
| |
| case JavaTypeLong: |
| { |
| resultValue = jsNumber(result.j); |
| } |
| break; |
| |
| case JavaTypeFloat: |
| { |
| resultValue = jsNumber(result.f); |
| } |
| break; |
| |
| case JavaTypeDouble: |
| { |
| resultValue = jsNumber(result.d); |
| } |
| break; |
| |
| case JavaTypeArray: |
| { |
| const char* arrayType = jMethod->returnTypeClassName(); |
| ASSERT(arrayType[0] == '['); |
| resultValue = JavaArray::convertJObjectToArray(exec, result.l, arrayType, rootObject); |
| } |
| break; |
| |
| case JavaTypeInvalid: |
| { |
| resultValue = jsUndefined(); |
| } |
| break; |
| } |
| |
| return resultValue; |
| } |
| |
| JSValue JavaInstance::defaultValue(ExecState* exec, PreferredPrimitiveType hint) const |
| { |
| if (hint == PreferString) |
| return stringValue(exec); |
| if (hint == PreferNumber) |
| return numberValue(exec); |
| JavaClass* aClass = static_cast<JavaClass*>(getClass()); |
| if (aClass->isStringClass()) |
| return stringValue(exec); |
| if (aClass->isNumberClass()) |
| return numberValue(exec); |
| if (aClass->isBooleanClass()) |
| return booleanValue(); |
| return valueOf(exec); |
| } |
| |
| JSValue JavaInstance::valueOf(ExecState* exec) const |
| { |
| return stringValue(exec); |
| } |
| |
| #endif // ENABLE(JAVA_BRIDGE) |