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// Copyright 2013 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/accessibility/ui/focus_ring_controller.h"
#include <memory>
#include <string_view>
#include "ash/accessibility/ui/focus_ring_layer.h"
#include "ash/accessibility/ui/native_focus_watcher.h"
#include "ash/public/cpp/shell_window_ids.h"
#include "ash/shell.h"
#include "ash/system/tray/tray_background_view.h"
#include "ash/wm/window_util.h"
#include "ui/aura/window.h"
#include "ui/views/controls/button/label_button.h"
#include "ui/views/view.h"
#include "ui/views/widget/widget.h"
namespace ash {
FocusRingController::FocusRingController() = default;
FocusRingController::~FocusRingController() {
SetVisible(false);
if (native_focus_watcher_) {
native_focus_watcher_->RemoveObserver(this);
native_focus_watcher_.reset();
}
}
void FocusRingController::OnNativeFocusChanged(
const gfx::Rect& bounds_in_screen) {
bounds_in_screen_ = bounds_in_screen;
UpdateFocusRing();
}
void FocusRingController::OnNativeFocusCleared() {
ClearFocusRing();
}
void FocusRingController::SetVisible(bool visible) {
if (visible_ == visible)
return;
visible_ = visible;
if (visible_) {
if (!native_focus_watcher_) {
native_focus_watcher_ = std::make_unique<NativeFocusWatcher>();
native_focus_watcher_->AddObserver(this);
}
native_focus_watcher_->SetEnabled(true);
} else if (native_focus_watcher_) {
// If !visible_, disable watching focus.
native_focus_watcher_->SetEnabled(false);
}
}
void FocusRingController::UpdateFocusRing() {
aura::Window* active_window = window_util::GetActiveWindow();
if (!active_window) {
return;
}
aura::Window* root_window = active_window->GetRootWindow();
if (!focus_ring_layer_) {
focus_ring_layer_ = std::make_unique<FocusRingLayer>(this);
}
aura::Window* container = Shell::GetContainer(
root_window, kShellWindowId_AccessibilityBubbleContainer);
focus_ring_layer_->Set(container, bounds_in_screen_, /*stack_at_top=*/true);
}
void FocusRingController::ClearFocusRing() {
focus_ring_layer_.reset();
}
void FocusRingController::OnDeviceScaleFactorChanged() {
UpdateFocusRing();
}
} // namespace ash
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