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// Copyright 2021 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/quick_pair/feature_status_tracker/screen_state_enabled_provider.h"
#include "ash/shell.h"
#include "ui/display/types/display_mode.h"
#include "ui/display/types/display_snapshot.h"
namespace ash {
namespace quick_pair {
ScreenStateEnabledProvider::ScreenStateEnabledProvider() {
auto* configurator = Shell::Get()->display_configurator();
DCHECK(configurator);
configurator_observation_.Observe(configurator);
// IsDisplayOn() is true for a screen with brightness 0 but in practice
// that edge case does not occur at initialization. We cover that edge
// case later but we don't have access to a DisplayStateList here.
SetEnabledAndInvokeCallback(configurator->IsDisplayOn());
}
ScreenStateEnabledProvider::~ScreenStateEnabledProvider() = default;
void ScreenStateEnabledProvider::OnDisplayConfigurationChanged(
const display::DisplayConfigurator::DisplayStateList& display_states) {
for (const display::DisplaySnapshot* state : display_states) {
// If a display has current_mode, then it is (1) an external monitor or (2)
// the internal display with non-zero brightness and an open laptop lid.
if (state->current_mode()) {
SetEnabledAndInvokeCallback(true);
return;
}
}
SetEnabledAndInvokeCallback(false);
}
} // namespace quick_pair
} // namespace ash
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