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// Copyright 2012 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "content/public/browser/overscroll_configuration.h"
#include "base/command_line.h"
#include "base/strings/string_number_conversions.h"
#include "content/common/features.h"
#include "content/public/common/content_switches.h"
namespace {
bool g_is_ptr_mode_initialized = false;
content::OverscrollConfig::PullToRefreshMode g_ptr_mode =
content::OverscrollConfig::PullToRefreshMode::kDisabled;
bool g_is_touchpad_overscroll_history_navigation_enabled_initialized = false;
bool g_touchpad_overscroll_history_navigation_enabled = false;
// On Windows, we only process 0.3 second inertial events then cancel the
// overscroll if it is not completed yet.
int g_max_inertial_events_before_overscroll_cancellation_in_ms = 300;
} // namespace
namespace content {
// static
const float OverscrollConfig::kCompleteTouchpadThresholdPercent = 0.3f;
const float OverscrollConfig::kCompleteTouchscreenThresholdPercent = 0.25f;
// static
const float OverscrollConfig::kStartTouchpadThresholdDips = 60.f;
const float OverscrollConfig::kStartTouchscreenThresholdDips = 50.f;
// static
OverscrollConfig::PullToRefreshMode OverscrollConfig::GetPullToRefreshMode() {
if (g_is_ptr_mode_initialized)
return g_ptr_mode;
const std::string mode =
base::CommandLine::ForCurrentProcess()->GetSwitchValueASCII(
switches::kPullToRefresh);
if (mode == "1")
g_ptr_mode = PullToRefreshMode::kEnabled;
else if (mode == "2")
g_ptr_mode = PullToRefreshMode::kEnabledTouchschreen;
g_is_ptr_mode_initialized = true;
return g_ptr_mode;
}
// static
void OverscrollConfig::SetPullToRefreshMode(PullToRefreshMode mode) {
g_ptr_mode = mode;
g_is_ptr_mode_initialized = true;
}
// static
void OverscrollConfig::ResetPullToRefreshMode() {
g_is_ptr_mode_initialized = false;
g_ptr_mode = OverscrollConfig::PullToRefreshMode::kDisabled;
}
// static
bool OverscrollConfig::TouchpadOverscrollHistoryNavigationEnabled() {
if (!g_is_touchpad_overscroll_history_navigation_enabled_initialized) {
g_is_touchpad_overscroll_history_navigation_enabled_initialized = true;
g_touchpad_overscroll_history_navigation_enabled =
base::FeatureList::IsEnabled(
features::kTouchpadOverscrollHistoryNavigation);
}
return g_touchpad_overscroll_history_navigation_enabled;
}
// static
void OverscrollConfig::ResetTouchpadOverscrollHistoryNavigationEnabled() {
g_is_touchpad_overscroll_history_navigation_enabled_initialized = false;
}
// static
base::TimeDelta
OverscrollConfig::MaxInertialEventsBeforeOverscrollCancellation() {
return base::Milliseconds(
g_max_inertial_events_before_overscroll_cancellation_in_ms);
}
} // namespace content
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