content/browser/android/java/java_method.h

   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_JAVA_METHOD_H_
   6 #define CONTENT_BROWSER_ANDROID_JAVA_JAVA_METHOD_H_
   7
   8 #include <jni.h>
   9 #include <string>
  10 #include <vector>
  11
  12 #include "base/android/scoped_java_ref.h"
  13 #include "content/browser/android/java/java_type.h"
  14 #include "content/common/content_export.h"
  15
  16 namespace content {
  17
  18 // Wrapper around java.lang.reflect.Method. This class must be used on a single
  19 // thread only.
  20 class CONTENT_EXPORT JavaMethod {
  21  public:
  22   explicit JavaMethod(const base::android::JavaRef<jobject>& method);
  23   ~JavaMethod();
  24
  25   const std::string& name() const { return name_; }
  26   size_t num_parameters() const;
  27   bool is_static() const;
  28   const JavaType& parameter_type(size_t index) const;
  29   const JavaType& return_type() const;
  30   jmethodID id() const;
  31
  32  private:
  33   void EnsureNumParametersIsSetUp() const;
  34   void EnsureTypesAndIDAreSetUp() const;
  35
  36   std::string name_;
  37   mutable base::android::ScopedJavaGlobalRef<jobject> java_method_;
  38   mutable bool have_calculated_num_parameters_;
  39   mutable size_t num_parameters_;
  40   mutable std::vector<JavaType> parameter_types_;
  41   mutable JavaType return_type_;
  42   mutable bool is_static_;
  43   mutable jmethodID id_;
  44
  45   DISALLOW_IMPLICIT_CONSTRUCTORS(JavaMethod);
  46 };
  47
  48 }  // namespace content
  49
  50 #endif  // CONTENT_BROWSER_ANDROID_JAVA_JAVA_METHOD_H_