1 /* 2 * Copyright 2010, The Android Open Source Project 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 * * Redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer. 9 * * 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 THE COPYRIGHT HOLDERS ``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 THE COPYRIGHT OWNER 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 27 #include "config.h" 28 #include "JavaNPObjectV8.h" 29 30 #include "JNIUtilityPrivate.h" 31 #include "JavaClassV8.h" 32 #include "JavaInstanceV8.h" 33 #include "npruntime_impl.h" 34 35 namespace JSC { 36 37 namespace Bindings { 38 39 static NPObject* AllocJavaNPObject(NPP, NPClass*) 40 { 41 JavaNPObject* obj = static_cast<JavaNPObject*>(malloc(sizeof(JavaNPObject))); 42 if (!obj) 43 return 0; 44 memset(obj, 0, sizeof(JavaNPObject)); 45 return reinterpret_cast<NPObject*>(obj); 46 } 47 48 static void FreeJavaNPObject(NPObject* npobj) 49 { 50 JavaNPObject* obj = reinterpret_cast<JavaNPObject*>(npobj); 51 obj->m_instance = 0; // free does not call the destructor 52 free(obj); 53 } 54 55 static NPClass JavaNPObjectClass = { 56 NP_CLASS_STRUCT_VERSION, 57 AllocJavaNPObject, // allocate, 58 FreeJavaNPObject, // free, 59 0, // invalidate 60 JavaNPObjectHasMethod, 61 JavaNPObjectInvoke, 62 0, // invokeDefault, 63 JavaNPObjectHasProperty, 64 JavaNPObjectGetProperty, 65 0, // setProperty 66 0, // removeProperty 67 0, // enumerate 68 0 // construct 69 }; 70 71 // ANDROID-specific change. TODO: Upstream 72 NPObject* JavaInstanceToNPObject(PassRefPtr<JavaInstance> instance) 73 // END ANDROID-specific change 74 { 75 JavaNPObject* object = reinterpret_cast<JavaNPObject*>(_NPN_CreateObject(0, &JavaNPObjectClass)); 76 object->m_instance = instance; 77 return reinterpret_cast<NPObject*>(object); 78 } 79 80 // Returns null if obj is not a wrapper of JavaInstance 81 JavaInstance* ExtractJavaInstance(NPObject* obj) 82 { 83 if (obj->_class == &JavaNPObjectClass) 84 return reinterpret_cast<JavaNPObject*>(obj)->m_instance.get(); 85 return 0; 86 } 87 88 bool JavaNPObjectHasMethod(NPObject* obj, NPIdentifier identifier) 89 { 90 JavaInstance* instance = ExtractJavaInstance(obj); 91 if (!instance) 92 return false; 93 NPUTF8* name = _NPN_UTF8FromIdentifier(identifier); 94 if (!name) 95 return false; 96 97 instance->begin(); 98 bool result = (instance->getClass()->methodsNamed(name).size() > 0); 99 instance->end(); 100 101 // TODO: use NPN_MemFree 102 free(name); 103 104 return result; 105 } 106 107 bool JavaNPObjectInvoke(NPObject* obj, NPIdentifier identifier, const NPVariant* args, uint32_t argCount, NPVariant* result) 108 { 109 JavaInstance* instance = ExtractJavaInstance(obj); 110 if (!instance) 111 return false; 112 NPUTF8* name = _NPN_UTF8FromIdentifier(identifier); 113 if (!name) 114 return false; 115 116 instance->begin(); 117 bool r = instance->invokeMethod(name, args, argCount, result); 118 instance->end(); 119 120 // TODO: use NPN_MemFree 121 free(name); 122 return r; 123 } 124 125 bool JavaNPObjectHasProperty(NPObject* obj, NPIdentifier identifier) 126 { 127 JavaInstance* instance = ExtractJavaInstance(obj); 128 if (!instance) 129 return false; 130 NPUTF8* name = _NPN_UTF8FromIdentifier(identifier); 131 if (!name) 132 return false; 133 instance->begin(); 134 bool result = instance->getClass()->fieldNamed(name); 135 instance->end(); 136 free(name); 137 return result; 138 } 139 140 bool JavaNPObjectGetProperty(NPObject* obj, NPIdentifier identifier, NPVariant* result) 141 { 142 VOID_TO_NPVARIANT(*result); 143 JavaInstance* instance = ExtractJavaInstance(obj); 144 if (!instance) 145 return false; 146 NPUTF8* name = _NPN_UTF8FromIdentifier(identifier); 147 if (!name) 148 return false; 149 150 instance->begin(); 151 JavaField* field = instance->getClass()->fieldNamed(name); 152 instance->end(); 153 free(name); // TODO: use NPN_MemFree 154 155 if (!field) 156 return false; 157 158 #ifdef EMULATE_JSC_BINDINGS 159 // JSC does not seem to support returning object properties so we emulate that 160 // behaviour here. 161 jvalue value; 162 #else 163 // FIXME: Note here that field->type() refers to the Java class name and NOT the 164 // JNI signature i.e. "int" as opposed to "I". This means that the field lookup 165 // will fail. 166 jvalue value = getJNIField(instance->javaInstance(), 167 field->getJNIType(), 168 field->name().UTF8String(), 169 field->type()); 170 #endif 171 convertJValueToNPVariant(value, field->getJNIType(), field->type(), result); 172 173 return true; 174 } 175 176 } // namespace Bindings 177 178 } // namespace JSC 179
