1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
5 #include "ash/focus_cycler.h"
8 #include "ash/wm/mru_window_tracker.h"
9 #include "ash/wm/window_cycle_controller.h"
10 #include "ash/wm/window_util.h"
11 #include "ui/aura/client/activation_client.h"
12 #include "ui/aura/window.h"
13 #include "ui/views/accessible_pane_view.h"
14 #include "ui/views/focus/focus_search.h"
15 #include "ui/views/widget/widget.h"
21 bool HasFocusableWindow() {
22 return !MruWindowTracker::BuildWindowList(false).empty();
29 FocusCycler::FocusCycler() : widget_activating_(NULL
) {
32 FocusCycler::~FocusCycler() {
35 void FocusCycler::AddWidget(views::Widget
* widget
) {
36 widgets_
.push_back(widget
);
39 void FocusCycler::RotateFocus(Direction direction
) {
40 aura::Window
* window
= ash::wm::GetActiveWindow();
42 views::Widget
* widget
= views::Widget::GetWidgetForNativeWindow(window
);
43 // First try to rotate focus within the active widget. If that succeeds,
45 if (widget
&& widget
->GetFocusManager()->RotatePaneFocus(
46 direction
== BACKWARD
?
47 views::FocusManager::kBackward
: views::FocusManager::kForward
,
48 views::FocusManager::kNoWrap
)) {
53 const bool has_window
= HasFocusableWindow();
55 int count
= static_cast<int>(widgets_
.size());
56 int browser_index
= has_window
? count
: -1;
58 for (; index
< count
; ++index
) {
59 if (widgets_
[index
]->IsActive())
63 int start_index
= index
;
69 if (direction
== FORWARD
)
70 index
= (index
+ 1) % count
;
72 index
= ((index
- 1) + count
) % count
;
74 // Ensure that we don't loop more than once.
75 if (index
== start_index
)
78 if (index
== browser_index
) {
79 // Activate the most recently active browser window.
80 ash::Shell::GetInstance()->window_cycle_controller()->HandleCycleWindow(
81 WindowCycleController::FORWARD
, false);
83 // Rotate pane focus within that window.
84 aura::Window
* window
= ash::wm::GetActiveWindow();
87 views::Widget
* widget
= views::Widget::GetWidgetForNativeWindow(window
);
90 views::FocusManager
* focus_manager
= widget
->GetFocusManager();
91 focus_manager
->ClearFocus();
92 focus_manager
->RotatePaneFocus(
93 direction
== BACKWARD
?
94 views::FocusManager::kBackward
: views::FocusManager::kForward
,
95 views::FocusManager::kWrap
);
98 if (FocusWidget(widgets_
[index
]))
104 bool FocusCycler::FocusWidget(views::Widget
* widget
) {
105 // Note: It is not necessary to set the focus directly to the pane since that
106 // will be taken care of by the widget activation.
107 widget_activating_
= widget
;
109 widget_activating_
= NULL
;
110 return widget
->IsActive();
113 } // namespace internal