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// 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 "chrome/browser/chromeos/ui/focus_ring_controller.h"
#include "ash/system/tray/actionable_view.h"
#include "ash/system/tray/tray_background_view.h"
#include "ash/system/tray/tray_popup_header_button.h"
#include "ash/wm/window_util.h"
#include "chrome/browser/chromeos/ui/focus_ring_layer.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 chromeos {
FocusRingController::FocusRingController()
: visible_(false),
widget_(NULL) {
}
FocusRingController::~FocusRingController() {
SetVisible(false);
}
void FocusRingController::SetVisible(bool visible) {
if (visible_ == visible)
return;
visible_ = visible;
if (visible_) {
views::WidgetFocusManager::GetInstance()->AddFocusChangeListener(this);
aura::Window* active_window = ash::wm::GetActiveWindow();
if (active_window)
SetWidget(views::Widget::GetWidgetForNativeWindow(active_window));
} else {
views::WidgetFocusManager::GetInstance()->RemoveFocusChangeListener(this);
SetWidget(NULL);
}
}
void FocusRingController::UpdateFocusRing() {
views::View* view = NULL;
if (widget_ && widget_->GetFocusManager())
view = widget_->GetFocusManager()->GetFocusedView();
// No focus ring if no focused view or the focused view covers the whole
// widget content area (such as RenderWidgetHostWidgetAura).
if (!view ||
view->ConvertRectToWidget(view->bounds()) ==
widget_->GetContentsView()->bounds()) {
focus_ring_layer_.reset();
return;
}
gfx::Rect view_bounds = view->GetContentsBounds();
// Workarounds that attempts to pick a better bounds.
if (view->GetClassName() == views::LabelButton::kViewClassName) {
view_bounds = view->GetLocalBounds();
view_bounds.Inset(2, 2, 2, 2);
}
// Workarounds for system tray items that have customized focus borders. The
// insets here must be consistent with the ones used by those classes.
if (view->GetClassName() == ash::ActionableView::kViewClassName) {
view_bounds = view->GetLocalBounds();
view_bounds.Inset(1, 1, 3, 3);
} else if (view->GetClassName() == ash::TrayBackgroundView::kViewClassName) {
view_bounds.Inset(1, 1, 3, 3);
} else if (view->GetClassName() ==
ash::TrayPopupHeaderButton::kViewClassName) {
view_bounds = view->GetLocalBounds();
view_bounds.Inset(2, 1, 2, 2);
}
// Convert view bounds to widget/window coordinates.
view_bounds = view->ConvertRectToWidget(view_bounds);
// Translate window coordinates to root window coordinates.
DCHECK(view->GetWidget());
aura::Window* window = view->GetWidget()->GetNativeWindow();
aura::Window* root_window = window->GetRootWindow();
gfx::Point origin = view_bounds.origin();
aura::Window::ConvertPointToTarget(window, root_window, &origin);
view_bounds.set_origin(origin);
// Update the focus ring layer.
if (!focus_ring_layer_)
focus_ring_layer_.reset(new FocusRingLayer(this));
focus_ring_layer_->Set(root_window, view_bounds);
}
void FocusRingController::OnDeviceScaleFactorChanged() {
UpdateFocusRing();
}
void FocusRingController::SetWidget(views::Widget* widget) {
if (widget_) {
widget_->RemoveObserver(this);
if (widget_->GetFocusManager())
widget_->GetFocusManager()->RemoveFocusChangeListener(this);
}
widget_ = widget;
if (widget_) {
widget_->AddObserver(this);
if (widget_->GetFocusManager())
widget_->GetFocusManager()->AddFocusChangeListener(this);
}
UpdateFocusRing();
}
void FocusRingController::OnWidgetDestroying(views::Widget* widget) {
DCHECK_EQ(widget_, widget);
SetWidget(NULL);
}
void FocusRingController::OnWidgetBoundsChanged(views::Widget* widget,
const gfx::Rect& new_bounds) {
DCHECK_EQ(widget_, widget);
UpdateFocusRing();
}
void FocusRingController::OnNativeFocusChanged(gfx::NativeView focused_now) {
views::Widget* widget =
focused_now ? views::Widget::GetWidgetForNativeWindow(focused_now) : NULL;
SetWidget(widget);
}
void FocusRingController::OnWillChangeFocus(views::View* focused_before,
views::View* focused_now) {
}
void FocusRingController::OnDidChangeFocus(views::View* focused_before,
views::View* focused_now) {
DCHECK_EQ(focused_now, widget_->GetFocusManager()->GetFocusedView());
UpdateFocusRing();
}
} // namespace chromeos
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