blob: 24a0d5b9bd2fa4d14021d98ccc37e36a4f75f952 [file] [log] [blame]
// Copyright (c) 2018 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/macros.h"
#include "base/time/time.h"
#include "ui/views/views_export.h"
namespace ui {
class Event;
namespace views {
// The goal of this class is to prevent potentially unintentional user
// interaction with a UI element.
class VIEWS_EXPORT InputEventActivationProtector {
InputEventActivationProtector() = default;
~InputEventActivationProtector() = default;
// Updates the state of the protector based off of visibility changes. This
// method must be called when the visibility of the view is changed.
void VisibilityChanged(bool is_visible);
// Returns true if the event is a mouse, touch, or pointer event that took
// place within the double-click time interval after |view_shown_time_stamp_|.
bool IsPossiblyUnintendedInteraction(const ui::Event& event);
// Resets the state for click tracking.
void ResetForTesting();
// Timestamp of when the view being tracked is first shown.
base::TimeTicks view_shown_time_stamp_;
// Timestamp of the last event.
base::TimeTicks last_event_timestamp_;
// Number of repeated UI events with short intervals.
size_t repeated_event_count_ = 0;
} // namespace views