blob: 60184bf90468aa8f9f1f46d8b773d1a00e7a3ebd [file] [log] [blame]
// Copyright 2016 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.
#include "base/android/scoped_java_ref.h"
#include "ui/android/ui_android_export.h"
namespace ui {
class UI_ANDROID_EXPORT OverscrollRefreshHandler {
explicit OverscrollRefreshHandler(
const base::android::JavaRef<jobject>& j_overscroll_refresh_handler);
// Note: the following methods are virtual because this class is overridden
// for testing in
virtual ~OverscrollRefreshHandler();
// Signals the start of an overscrolling pull. Returns whether the handler
// will consume the overscroll gesture, in which case it will receive the
// remaining pull updates.
virtual bool PullStart();
// Signals a pull update, where |delta| is in device pixels.
virtual void PullUpdate(float delta);
// Signals the release of the pull, and whether the release is allowed to
// trigger the refresh action.
virtual void PullRelease(bool allow_refresh);
// Reset the active pull state.
virtual void PullReset();
base::android::ScopedJavaGlobalRef<jobject> j_overscroll_refresh_handler_;
} // namespace ui