1 // Copyright 2014 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #ifndef CONTENT_BROWSER_ANDROID_JAVA_GIN_JAVA_METHOD_INVOCATION_HELPER_H_ 6 #define CONTENT_BROWSER_ANDROID_JAVA_GIN_JAVA_METHOD_INVOCATION_HELPER_H_ 7 8 #include <map> 9 10 #include "base/android/jni_weak_ref.h" 11 #include "base/android/scoped_java_ref.h" 12 #include "base/memory/ref_counted.h" 13 #include "base/values.h" 14 #include "content/browser/android/java/gin_java_bound_object.h" 15 #include "content/browser/android/java/java_type.h" 16 #include "content/common/android/gin_java_bridge_errors.h" 17 #include "content/common/content_export.h" 18 19 namespace content { 20 21 class JavaMethod; 22 23 // Instances of this class are created and used on the background thread. 24 class CONTENT_EXPORT GinJavaMethodInvocationHelper 25 : public base::RefCountedThreadSafe<GinJavaMethodInvocationHelper> { 26 public: 27 class DispatcherDelegate { 28 public: DispatcherDelegate()29 DispatcherDelegate() {} ~DispatcherDelegate()30 virtual ~DispatcherDelegate() {} 31 virtual JavaObjectWeakGlobalRef GetObjectWeakRef( 32 GinJavaBoundObject::ObjectID object_id) = 0; 33 34 private: 35 DISALLOW_COPY_AND_ASSIGN(DispatcherDelegate); 36 }; 37 38 class ObjectDelegate { 39 public: ObjectDelegate()40 ObjectDelegate() {} ~ObjectDelegate()41 virtual ~ObjectDelegate() {} 42 virtual base::android::ScopedJavaLocalRef<jobject> GetLocalRef( 43 JNIEnv* env) = 0; 44 virtual base::android::ScopedJavaLocalRef<jclass> GetLocalClassRef( 45 JNIEnv* env) = 0; 46 virtual const JavaMethod* FindMethod(const std::string& method_name, 47 size_t num_parameters) = 0; 48 virtual bool IsObjectGetClassMethod(const JavaMethod* method) = 0; 49 virtual const base::android::JavaRef<jclass>& GetSafeAnnotationClass() = 0; 50 51 private: 52 DISALLOW_COPY_AND_ASSIGN(ObjectDelegate); 53 }; 54 55 GinJavaMethodInvocationHelper(scoped_ptr<ObjectDelegate> object, 56 const std::string& method_name, 57 const base::ListValue& arguments); 58 void Init(DispatcherDelegate* dispatcher); 59 60 void Invoke(); 61 62 bool HoldsPrimitiveResult(); 63 const base::ListValue& GetPrimitiveResult(); 64 const base::android::JavaRef<jobject>& GetObjectResult(); 65 const base::android::JavaRef<jclass>& GetSafeAnnotationClass(); 66 const GinJavaBridgeError GetInvocationError(); 67 68 private: 69 friend class base::RefCountedThreadSafe<GinJavaMethodInvocationHelper>; 70 ~GinJavaMethodInvocationHelper(); 71 72 void BuildObjectRefsFromListValue(DispatcherDelegate* dispatcher, 73 const base::Value* list_value); 74 void BuildObjectRefsFromDictionaryValue(DispatcherDelegate* dispatcher, 75 const base::Value* dict_value); 76 77 bool AppendObjectRef(DispatcherDelegate* dispatcher, 78 const base::Value* raw_value); 79 80 void InvokeMethod(jobject object, 81 jclass clazz, 82 const JavaType& return_type, 83 jmethodID id, 84 jvalue* parameters); 85 void SetInvocationError(GinJavaBridgeError error); 86 void SetPrimitiveResult(const base::ListValue& result_wrapper); 87 void SetObjectResult( 88 const base::android::JavaRef<jobject>& object, 89 const base::android::JavaRef<jclass>& safe_annotation_clazz); 90 91 typedef std::map<GinJavaBoundObject::ObjectID, 92 JavaObjectWeakGlobalRef> ObjectRefs; 93 94 scoped_ptr<ObjectDelegate> object_; 95 const std::string method_name_; 96 scoped_ptr<base::ListValue> arguments_; 97 ObjectRefs object_refs_; 98 bool holds_primitive_result_; 99 scoped_ptr<base::ListValue> primitive_result_; 100 GinJavaBridgeError invocation_error_; 101 base::android::ScopedJavaGlobalRef<jobject> object_result_; 102 base::android::ScopedJavaGlobalRef<jclass> safe_annotation_clazz_; 103 104 DISALLOW_COPY_AND_ASSIGN(GinJavaMethodInvocationHelper); 105 }; 106 107 } // namespace content 108 109 #endif // CONTENT_BROWSER_ANDROID_JAVA_GIN_JAVA_METHOD_INVOCATION_HELPER_H_ 110