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| 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_RENDERER_HOST_JAVA_GIN_JAVA_METHOD_INVOCATION_HELPER_H_ | |
| 6 #define CONTENT_BROWSER_RENDERER_HOST_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/renderer_host/java/gin_java_bound_object.h" | |
| 15 #include "content/browser/renderer_host/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 initialized on the UI thread, do | |
| 24 // their work on the background thread, and then again examined on the UI | |
| 25 // thread. They don't work on both threads simultaneously, though. | |
| 26 class CONTENT_EXPORT GinJavaMethodInvocationHelper | |
| 27 : public base::RefCountedThreadSafe<GinJavaMethodInvocationHelper> { | |
| 28 public: | |
| 29 // DispatcherDelegate is used on the UI thread | |
| 30 class DispatcherDelegate { | |
| 31 public: | |
| 32 DispatcherDelegate() {} | |
| 33 virtual ~DispatcherDelegate() {} | |
| 34 virtual JavaObjectWeakGlobalRef GetObjectWeakRef( | |
| 35 GinJavaBoundObject::ObjectID object_id) = 0; | |
| 36 | |
| 37 private: | |
| 38 DISALLOW_COPY_AND_ASSIGN(DispatcherDelegate); | |
| 39 }; | |
| 40 | |
| 41 // ObjectDelegate is used in the background thread | |
| 42 class ObjectDelegate { | |
| 43 public: | |
| 44 ObjectDelegate() {} | |
| 45 virtual ~ObjectDelegate() {} | |
| 46 virtual base::android::ScopedJavaLocalRef<jobject> GetLocalRef( | |
| 47 JNIEnv* env) = 0; | |
| 48 virtual base::android::ScopedJavaLocalRef<jclass> GetLocalClassRef( | |
| 49 JNIEnv* env) = 0; | |
| 50 virtual const JavaMethod* FindMethod(const std::string& method_name, | |
| 51 size_t num_parameters) = 0; | |
| 52 virtual bool IsObjectGetClassMethod(const JavaMethod* method) = 0; | |
| 53 virtual const base::android::JavaRef<jclass>& GetSafeAnnotationClass() = 0; | |
| 54 | |
| 55 private: | |
| 56 DISALLOW_COPY_AND_ASSIGN(ObjectDelegate); | |
| 57 }; | |
| 58 | |
| 59 GinJavaMethodInvocationHelper(scoped_ptr<ObjectDelegate> object, | |
| 60 const std::string& method_name, | |
| 61 const base::ListValue& arguments); | |
| 62 void Init(DispatcherDelegate* dispatcher); | |
| 63 | |
| 64 // Called on the background thread | |
| 65 void Invoke(); | |
| 66 | |
| 67 // Called on the UI thread | |
| 68 bool HoldsPrimitiveResult(); | |
| 69 const base::ListValue& GetPrimitiveResult(); | |
| 70 const base::android::JavaRef<jobject>& GetObjectResult(); | |
| 71 const base::android::JavaRef<jclass>& GetSafeAnnotationClass(); | |
| 72 const GinJavaBridgeError GetInvocationError(); | |
| 73 | |
| 74 private: | |
| 75 friend class base::RefCountedThreadSafe<GinJavaMethodInvocationHelper>; | |
| 76 ~GinJavaMethodInvocationHelper(); | |
| 77 | |
| 78 // Called on the UI thread | |
| 79 void BuildObjectRefsFromListValue(DispatcherDelegate* dispatcher, | |
| 80 const base::Value* list_value); | |
| 81 void BuildObjectRefsFromDictionaryValue(DispatcherDelegate* dispatcher, | |
| 82 const base::Value* dict_value); | |
| 83 | |
| 84 bool AppendObjectRef(DispatcherDelegate* dispatcher, | |
| 85 const base::Value* raw_value); | |
| 86 | |
| 87 // Called on the background thread. | |
| 88 void InvokeMethod(jobject object, | |
| 89 jclass clazz, | |
| 90 const JavaType& return_type, | |
| 91 jmethodID id, | |
| 92 jvalue* parameters); | |
| 93 void SetInvocationError(GinJavaBridgeError error); | |
| 94 void SetPrimitiveResult(const base::ListValue& result_wrapper); | |
| 95 void SetObjectResult( | |
| 96 const base::android::JavaRef<jobject>& object, | |
| 97 const base::android::JavaRef<jclass>& safe_annotation_clazz); | |
| 98 | |
| 99 typedef std::map<GinJavaBoundObject::ObjectID, | |
| 100 JavaObjectWeakGlobalRef> ObjectRefs; | |
| 101 | |
| 102 scoped_ptr<ObjectDelegate> object_; | |
| 103 const std::string method_name_; | |
| 104 scoped_ptr<base::ListValue> arguments_; | |
| 105 ObjectRefs object_refs_; | |
| 106 bool holds_primitive_result_; | |
| 107 scoped_ptr<base::ListValue> primitive_result_; | |
| 108 GinJavaBridgeError invocation_error_; | |
| 109 base::android::ScopedJavaGlobalRef<jobject> object_result_; | |
| 110 base::android::ScopedJavaGlobalRef<jclass> safe_annotation_clazz_; | |
| 111 | |
| 112 DISALLOW_COPY_AND_ASSIGN(GinJavaMethodInvocationHelper); | |
| 113 }; | |
| 114 | |
| 115 } // namespace content | |
| 116 | |
| 117 #endif // CONTENT_BROWSER_RENDERER_HOST_JAVA_GIN_JAVA_METHOD_INVOCATION_HELPER_
H_ | |
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