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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 "ash/capture_mode/sunfish_scanner_feature_watcher.h"
#include "ash/constants/ash_pref_names.h"
#include "ash/public/cpp/capture_mode/capture_mode_api.h"
#include "ash/scanner/scanner_controller.h"
#include "ash/session/session_controller_impl.h"
#include "ash/shell.h"
#include "base/functional/bind.h"
#include "base/functional/callback_forward.h"
#include "components/lens/lens_overlay_permission_utils.h"
#include "ui/aura/window.h"
namespace ash {
SunfishScannerFeatureWatcher::SunfishScannerFeatureWatcher(
SessionControllerImpl& session_controller,
Shell& shell)
: can_show_sunfish_ui_(::ash::CanShowSunfishUi()),
can_show_scanner_ui_(ScannerController::CanShowUiForShell()) {
session_controller_observation_.Observe(&session_controller);
shell_observation_.Observe(&shell);
OnActiveUserPrefServiceChanged(session_controller.GetActivePrefService());
}
SunfishScannerFeatureWatcher::~SunfishScannerFeatureWatcher() = default;
void SunfishScannerFeatureWatcher::AddObserver(Observer* observer) {
observers_.AddObserver(observer);
}
void SunfishScannerFeatureWatcher::RemoveObserver(Observer* observer) {
observers_.RemoveObserver(observer);
}
void SunfishScannerFeatureWatcher::UpdateFeatureStates() {
bool new_sunfish_state = ::ash::CanShowSunfishUi();
bool new_scanner_state = ScannerController::CanShowUiForShell();
if (new_sunfish_state == can_show_sunfish_ui_ &&
new_scanner_state == can_show_scanner_ui_) {
return;
}
can_show_sunfish_ui_ = new_sunfish_state;
can_show_scanner_ui_ = new_scanner_state;
for (Observer& observer : observers_) {
observer.OnSunfishScannerFeatureStatesChanged(*this);
}
}
void SunfishScannerFeatureWatcher::OnActiveUserPrefServiceChanged(
PrefService* pref_service) {
if (pref_change_registrar_.prefs() == pref_service) {
return;
}
UpdateFeatureStates();
pref_change_registrar_.Reset();
if (pref_service == nullptr) {
// Do not add observers on a null pref service.
return;
}
pref_change_registrar_.Init(pref_service);
base::RepeatingClosure update_feature_states =
base::BindRepeating(&SunfishScannerFeatureWatcher::UpdateFeatureStates,
weak_ptr_factory_.GetWeakPtr());
// Sunfish prefs:
pref_change_registrar_.Add(lens::prefs::kLensOverlaySettings,
update_feature_states);
pref_change_registrar_.Add(lens::prefs::kGenAiLensOverlaySettings,
update_feature_states);
// Scanner prefs:
pref_change_registrar_.Add(prefs::kScannerEnabled, update_feature_states);
pref_change_registrar_.Add(prefs::kScannerEnterprisePolicyAllowed,
update_feature_states);
// We do not need to observe Scanner consent, as that does not affect whether
// UI can be shown.
}
void SunfishScannerFeatureWatcher::OnPinnedStateChanged(
aura::Window* pinned_window) {
UpdateFeatureStates();
}
} // namespace ash
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