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- // 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.
- #ifndef UI_ANDROID_OVERSCROLL_REFRESH_HANDLER_H_
- #define UI_ANDROID_OVERSCROLL_REFRESH_HANDLER_H_
- #include "base/android/scoped_java_ref.h"
- #include "ui/android/overscroll_refresh.h"
- #include "ui/android/ui_android_export.h"
- namespace ui {
- class UI_ANDROID_EXPORT OverscrollRefreshHandler {
- public:
- 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 overscroll_refresh_unittest.cc
- 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(OverscrollAction type,
- float startx,
- float starty,
- bool navigate_forward);
- // Signals a pull update, where |x_delta| and |y_delta| are in device pixels.
- virtual void PullUpdate(float x_delta, float y_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();
- private:
- base::android::ScopedJavaGlobalRef<jobject> j_overscroll_refresh_handler_;
- };
- } // namespace ui
- #endif // UI_ANDROID_OVERSCROLL_REFRESH_HANDLER_H_
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