content/browser/frame_host/navigation_controller_android.h

   1 // Copyright 2013 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_FRAME_HOST_NAVIGATION_CONTROLLER_ANDROID_H_
   6 #define CONTENT_BROWSER_FRAME_HOST_NAVIGATION_CONTROLLER_ANDROID_H_
   7
   8 #include <jni.h>
   9
  10 #include "base/android/scoped_java_ref.h"
  11 #include "base/basictypes.h"
  12 #include "base/compiler_specific.h"
  13 #include "content/common/content_export.h"
  14
  15 namespace content {
  16
  17 class NavigationController;
  18
  19 // Android wrapper around NavigationController that provides safer passage
  20 // from java and back to native and provides java with a means of communicating
  21 // with its native counterpart.
  22 class CONTENT_EXPORT NavigationControllerAndroid {
  23  public:
  24   static bool Register(JNIEnv* env);
  25
  26   explicit NavigationControllerAndroid(
  27       NavigationController* navigation_controller);
  28   ~NavigationControllerAndroid();
  29
  30   NavigationController* navigation_controller() const {
  31     return navigation_controller_;
  32   }
  33
  34   base::android::ScopedJavaLocalRef<jobject> GetJavaObject();
  35
  36   jboolean CanGoBack(JNIEnv* env, jobject obj);
  37   jboolean CanGoForward(JNIEnv* env, jobject obj);
  38   jboolean CanGoToOffset(JNIEnv* env, jobject obj, jint offset);
  39   void GoBack(JNIEnv* env, jobject obj);
  40   void GoForward(JNIEnv* env, jobject obj);
  41   void GoToOffset(JNIEnv* env, jobject obj, jint offset);
  42   void GoToNavigationIndex(JNIEnv* env, jobject obj, jint index);
  43
  44  private:
  45   NavigationController* navigation_controller_;
  46   base::android::ScopedJavaGlobalRef<jobject> obj_;
  47
  48   DISALLOW_COPY_AND_ASSIGN(NavigationControllerAndroid);
  49 };
  50
  51 }  // namespace content
  52
  53 #endif  // CONTENT_BROWSER_FRAME_HOST_NAVIGATION_CONTROLLER_ANDROID_H_