webkit/glue/fling_animator_impl_android.h

// Copyright (c) 2012 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 WEBKIT_GLUE_FLING_ANIMATOR_IMPL_ANDROID_H_
#define WEBKIT_GLUE_FLING_ANIMATOR_IMPL_ANDROID_H_

#include "base/android/scoped_java_ref.h"
#include "third_party/WebKit/Source/Platform/chromium/public/WebFlingAnimator.h"
#include "third_party/WebKit/Source/Platform/chromium/public/WebFloatPoint.h"
#include "third_party/WebKit/Source/Platform/chromium/public/WebPoint.h"
#include "third_party/WebKit/Source/Platform/chromium/public/WebRect.h"

namespace webkit_glue {

class FlingAnimatorImpl : public WebKit::WebFlingAnimator {
 public:
  FlingAnimatorImpl();
  virtual ~FlingAnimatorImpl();

  virtual void startFling(const WebKit::WebFloatPoint& velocity,
                          const WebKit::WebRect& range);
  // Returns true if the animation is not yet finished.
  virtual bool updatePosition();
  virtual WebKit::WebPoint getCurrentPosition();
  virtual void cancelFling();

 private:
  bool is_active_;

  // Java OverScroller instance and methods.
  base::android::ScopedJavaGlobalRef<jobject> java_scroller_;
  jmethodID fling_method_id_;
  jmethodID abort_method_id_;
  jmethodID compute_method_id_;
  jmethodID getX_method_id_;
  jmethodID getY_method_id_;

  DISALLOW_COPY_AND_ASSIGN(FlingAnimatorImpl);
};

} // namespace webkit_glue

#endif // WEBKIT_GLUE_FLING_ANIMATOR_IMPL_ANDROID_H_