| // Copyright 2014 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef CONTENT_BROWSER_ANDROID_JAVA_GIN_JAVA_METHOD_INVOCATION_HELPER_H_ |
| #define CONTENT_BROWSER_ANDROID_JAVA_GIN_JAVA_METHOD_INVOCATION_HELPER_H_ |
| |
| #include <map> |
| |
| #include "base/android/jni_weak_ref.h" |
| #include "base/android/scoped_java_ref.h" |
| #include "base/memory/ref_counted.h" |
| #include "base/values.h" |
| #include "content/browser/android/java/gin_java_bound_object.h" |
| #include "content/browser/android/java/java_type.h" |
| #include "content/common/android/gin_java_bridge_errors.h" |
| #include "content/common/content_export.h" |
| |
| namespace content { |
| |
| class JavaMethod; |
| |
| // Instances of this class are created and initialized on the UI thread, do |
| // their work on the background thread, and then again examined on the UI |
| // thread. They don't work on both threads simultaneously, though. |
| class CONTENT_EXPORT GinJavaMethodInvocationHelper |
| : public base::RefCountedThreadSafe<GinJavaMethodInvocationHelper> { |
| public: |
| // DispatcherDelegate is used on the UI thread |
| class DispatcherDelegate { |
| public: |
| DispatcherDelegate() {} |
| virtual ~DispatcherDelegate() {} |
| virtual JavaObjectWeakGlobalRef GetObjectWeakRef( |
| GinJavaBoundObject::ObjectID object_id) = 0; |
| |
| private: |
| DISALLOW_COPY_AND_ASSIGN(DispatcherDelegate); |
| }; |
| |
| // ObjectDelegate is used in the background thread |
| class ObjectDelegate { |
| public: |
| ObjectDelegate() {} |
| virtual ~ObjectDelegate() {} |
| virtual base::android::ScopedJavaLocalRef<jobject> GetLocalRef( |
| JNIEnv* env) = 0; |
| virtual base::android::ScopedJavaLocalRef<jclass> GetLocalClassRef( |
| JNIEnv* env) = 0; |
| virtual const JavaMethod* FindMethod(const std::string& method_name, |
| size_t num_parameters) = 0; |
| virtual bool IsObjectGetClassMethod(const JavaMethod* method) = 0; |
| virtual const base::android::JavaRef<jclass>& GetSafeAnnotationClass() = 0; |
| |
| private: |
| DISALLOW_COPY_AND_ASSIGN(ObjectDelegate); |
| }; |
| |
| GinJavaMethodInvocationHelper(scoped_ptr<ObjectDelegate> object, |
| const std::string& method_name, |
| const base::ListValue& arguments); |
| void Init(DispatcherDelegate* dispatcher); |
| |
| // Called on the background thread |
| void Invoke(); |
| |
| // Called on the UI thread |
| bool HoldsPrimitiveResult(); |
| const base::ListValue& GetPrimitiveResult(); |
| const base::android::JavaRef<jobject>& GetObjectResult(); |
| const base::android::JavaRef<jclass>& GetSafeAnnotationClass(); |
| const GinJavaBridgeError GetInvocationError(); |
| |
| private: |
| friend class base::RefCountedThreadSafe<GinJavaMethodInvocationHelper>; |
| ~GinJavaMethodInvocationHelper(); |
| |
| // Called on the UI thread |
| void BuildObjectRefsFromListValue(DispatcherDelegate* dispatcher, |
| const base::Value* list_value); |
| void BuildObjectRefsFromDictionaryValue(DispatcherDelegate* dispatcher, |
| const base::Value* dict_value); |
| |
| bool AppendObjectRef(DispatcherDelegate* dispatcher, |
| const base::Value* raw_value); |
| |
| // Called on the background thread. |
| void InvokeMethod(jobject object, |
| jclass clazz, |
| const JavaType& return_type, |
| jmethodID id, |
| jvalue* parameters); |
| void SetInvocationError(GinJavaBridgeError error); |
| void SetPrimitiveResult(const base::ListValue& result_wrapper); |
| void SetObjectResult( |
| const base::android::JavaRef<jobject>& object, |
| const base::android::JavaRef<jclass>& safe_annotation_clazz); |
| |
| typedef std::map<GinJavaBoundObject::ObjectID, |
| JavaObjectWeakGlobalRef> ObjectRefs; |
| |
| scoped_ptr<ObjectDelegate> object_; |
| const std::string method_name_; |
| scoped_ptr<base::ListValue> arguments_; |
| ObjectRefs object_refs_; |
| bool holds_primitive_result_; |
| scoped_ptr<base::ListValue> primitive_result_; |
| GinJavaBridgeError invocation_error_; |
| base::android::ScopedJavaGlobalRef<jobject> object_result_; |
| base::android::ScopedJavaGlobalRef<jclass> safe_annotation_clazz_; |
| |
| DISALLOW_COPY_AND_ASSIGN(GinJavaMethodInvocationHelper); |
| }; |
| |
| } // namespace content |
| |
| #endif // CONTENT_BROWSER_ANDROID_JAVA_GIN_JAVA_METHOD_INVOCATION_HELPER_H_ |