blob: d39f4b7961291bf8a149f4823f45982d3b00ed48 [file] [log] [blame]
// Copyright 2013 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include <memory>
#include "ash/accessibility/focus_ring_layer.h"
#include "ash/ash_export.h"
#include "base/macros.h"
#include "ui/views/focus/focus_manager.h"
#include "ui/views/focus/widget_focus_manager.h"
#include "ui/views/widget/widget_observer.h"
namespace views {
class View;
class Widget;
} // namespace views
namespace ash {
// FocusRingController manages the focus ring around the focused view. It
// follows widget focus change and update the focus ring layer when the focused
// view of the widget changes.
class ASH_EXPORT FocusRingController : public AccessibilityLayerDelegate,
public views::WidgetObserver,
public views::WidgetFocusChangeListener,
public views::FocusChangeListener {
~FocusRingController() override;
// Turns on/off the focus ring.
void SetVisible(bool visible);
// AccessibilityLayerDelegate.
void OnDeviceScaleFactorChanged() override;
void OnAnimationStep(base::TimeTicks timestamp) override;
// Sets the focused |widget|.
void SetWidget(views::Widget* widget);
// Updates the focus ring to the focused view of |widget_|. If |widget_| is
// NULL or has no focused view, removes the focus ring. Otherwise, draws it.
void UpdateFocusRing();
// views::WidgetObserver overrides:
void OnWidgetDestroying(views::Widget* widget) override;
void OnWidgetBoundsChanged(views::Widget* widget,
const gfx::Rect& new_bounds) override;
// views::WidgetFocusChangeListener overrides:
void OnNativeFocusChanged(gfx::NativeView focused_now) override;
// views::FocusChangeListener overrides:
void OnWillChangeFocus(views::View* focused_before,
views::View* focused_now) override;
void OnDidChangeFocus(views::View* focused_before,
views::View* focused_now) override;
bool visible_;
views::Widget* widget_;
std::unique_ptr<FocusRingLayer> focus_ring_layer_;
} // namespace ash