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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/wm/window_util.h"
#include "chrome/browser/chromeos/ui/focus_ring_layer.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* focused_view = NULL;
if (widget_ && widget_->GetFocusManager())
focused_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 (!focused_view ||
focused_view->ConvertRectToWidget(focused_view->bounds()) ==
widget_->GetContentsView()->bounds()) {
focus_ring_layer_.reset();
return;
}
if (!focus_ring_layer_)
focus_ring_layer_.reset(new FocusRingLayer);
focus_ring_layer_->SetForView(focused_view);
}
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::OnNativeFocusChange(gfx::NativeView focused_before,
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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