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// Copyright 2025 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/browser/ui/tabs/alert/tab_alert_controller.h"
#include <functional>
#include <optional>
#include <vector>
#include "base/check.h"
#include "base/containers/fixed_flat_map.h"
#include "base/containers/flat_set.h"
#include "base/containers/to_vector.h"
#include "chrome/browser/media/webrtc/media_capture_devices_dispatcher.h"
#include "chrome/browser/ui/tabs/alert/tab_alert.h"
#include "content/public/browser/web_contents.h"
#include "content/public/browser/web_contents_capability_type.h"
namespace tabs {
bool CompareAlerts::operator()(TabAlert first, TabAlert second) const {
// Alerts are ordered from highest priority to be shown to lowest priority.
static constexpr auto tab_alert_priority =
base::MakeFixedFlatMap<TabAlert, int>(
{{TabAlert::DESKTOP_CAPTURING, 15},
{TabAlert::TAB_CAPTURING, 14},
{TabAlert::MEDIA_RECORDING, 13},
{TabAlert::AUDIO_RECORDING, 12},
{TabAlert::VIDEO_RECORDING, 11},
{TabAlert::BLUETOOTH_CONNECTED, 10},
{TabAlert::BLUETOOTH_SCAN_ACTIVE, 9},
{TabAlert::USB_CONNECTED, 8},
{TabAlert::HID_CONNECTED, 7},
{TabAlert::SERIAL_CONNECTED, 6},
{TabAlert::GLIC_ACCESSING, 5},
{TabAlert::GLIC_SHARING, 4},
{TabAlert::VR_PRESENTING_IN_HEADSET, 3},
{TabAlert::PIP_PLAYING, 2},
{TabAlert::AUDIO_MUTING, 1},
{TabAlert::AUDIO_PLAYING, 0}});
return tab_alert_priority.at(first) > tab_alert_priority.at(second);
}
TabAlertController::TabAlertController(TabInterface& tab)
: tabs::ContentsObservingTabFeature(tab) {
media_stream_capture_indicator_observation_.Observe(
MediaCaptureDevicesDispatcher::GetInstance()
->GetMediaStreamCaptureIndicator()
.get());
}
TabAlertController::~TabAlertController() = default;
base::CallbackListSubscription
TabAlertController::AddAlertToShowChangedCallback(
AlertToShowChangedCallback callback) {
return alert_to_show_changed_callbacks_.Add(std::move(callback));
}
std::optional<TabAlert> TabAlertController::GetAlertToShow() const {
if (active_alerts_.empty()) {
return std::nullopt;
}
return *active_alerts_.begin();
}
std::vector<TabAlert> TabAlertController::GetAllActiveAlerts() {
return base::ToVector(active_alerts_);
}
void TabAlertController::OnCapabilityTypesChanged(
content::WebContentsCapabilityType capability_type,
bool used) {
static constexpr base::fixed_flat_map<content::WebContentsCapabilityType,
TabAlert, 5>
capability_type_to_alert =
base::MakeFixedFlatMap<content::WebContentsCapabilityType, TabAlert>(
{{content::WebContentsCapabilityType::kBluetoothConnected,
TabAlert::BLUETOOTH_CONNECTED},
{content::WebContentsCapabilityType::kBluetoothScanning,
TabAlert::BLUETOOTH_SCAN_ACTIVE},
{content::WebContentsCapabilityType::kUSB,
TabAlert::USB_CONNECTED},
{content::WebContentsCapabilityType::kHID,
TabAlert::HID_CONNECTED},
{content::WebContentsCapabilityType::kSerial,
TabAlert::SERIAL_CONNECTED}});
if (!capability_type_to_alert.contains(capability_type)) {
return;
}
const TabAlert alert = capability_type_to_alert.at(capability_type);
UpdateAlertState(alert, used);
}
void TabAlertController::MediaPictureInPictureChanged(
bool is_picture_in_picture) {
UpdateAlertState(TabAlert::PIP_PLAYING, is_picture_in_picture);
}
void TabAlertController::DidUpdateAudioMutingState(bool muted) {
UpdateAlertState(TabAlert::AUDIO_MUTING, muted);
}
void TabAlertController::OnAudioStateChanged(bool audible) {
UpdateAlertState(TabAlert::AUDIO_PLAYING, audible);
}
void TabAlertController::OnIsCapturingVideoChanged(
content::WebContents* contents,
bool is_capturing_video) {
if (contents == web_contents()) {
UpdateAlertState(TabAlert::MEDIA_RECORDING, is_capturing_video);
}
}
void TabAlertController::OnIsCapturingAudioChanged(
content::WebContents* contents,
bool is_capturing_audio) {
if (contents == web_contents()) {
UpdateAlertState(TabAlert::MEDIA_RECORDING, is_capturing_audio);
}
}
void TabAlertController::OnIsBeingMirroredChanged(
content::WebContents* contents,
bool is_being_mirrored) {
if (contents == web_contents()) {
UpdateAlertState(TabAlert::TAB_CAPTURING, is_being_mirrored);
}
}
void TabAlertController::OnIsCapturingWindowChanged(
content::WebContents* contents,
bool is_capturing_window) {
if (contents == web_contents()) {
UpdateAlertState(TabAlert::DESKTOP_CAPTURING, is_capturing_window);
}
}
void TabAlertController::OnIsCapturingDisplayChanged(
content::WebContents* contents,
bool is_capturing_display) {
if (contents == web_contents()) {
UpdateAlertState(TabAlert::DESKTOP_CAPTURING, is_capturing_display);
}
}
void TabAlertController::UpdateAlertState(TabAlert alert, bool is_active) {
std::optional<TabAlert> previous_alert = GetAlertToShow();
if (is_active) {
active_alerts_.insert(alert);
} else {
active_alerts_.erase(alert);
}
std::optional<TabAlert> updated_alert = GetAlertToShow();
if (previous_alert != updated_alert) {
alert_to_show_changed_callbacks_.Notify(updated_alert);
}
}
} // namespace tabs
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