ash/focus_cycler.cc - Issue 2075923002: mash: Convert FocusCycler to wm common types and move to //ash/common

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Issue 2075923002: mash: Convert FocusCycler to wm common types and move to //ash/common (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master

Patch Set: Rebase Created 4 years, 6 months ago

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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.

4

5 #include "ash/focus_cycler.h"

6

7 #include "ash/aura/wm_window_aura.h"

8 #include "ash/common/wm/mru_window_tracker.h"

9 #include "ash/common/wm/window_state.h"

10 #include "ash/shell.h"

11 #include "ash/wm/window_state_aura.h"

12 #include "ash/wm/window_util.h"

13 #include "ui/aura/window.h"

14 #include "ui/views/accessible_pane_view.h"

15 #include "ui/views/focus/focus_search.h"

16 #include "ui/views/widget/widget.h"

17 #include "ui/wm/public/activation_client.h"

18

19 namespace ash {

20

21 namespace {

22

23 bool HasFocusableWindow() {

24 return !ash::Shell::GetInstance()->

25 mru_window_tracker()->BuildMruWindowList().empty();

26 }

27

28 } // namespace

29

30 FocusCycler::FocusCycler() : widget_activating_(NULL) {

31 }

32

33 FocusCycler::~FocusCycler() {

34 }

35

36 void FocusCycler::AddWidget(views::Widget* widget) {

37 widgets_.push_back(widget);

38 }

39

40 void FocusCycler::RemoveWidget(views::Widget* widget) {

41 auto iter = std::find(widgets_.begin(), widgets_.end(), widget);

42 if (iter != widgets_.end())

43 widgets_.erase(iter);

44 }

45

46 void FocusCycler::RotateFocus(Direction direction) {

47 aura::Window* window = ash::wm::GetActiveWindow();

48 if (window) {

49 views::Widget* widget = views::Widget::GetWidgetForNativeWindow(window);

50 // First try to rotate focus within the active widget. If that succeeds,

51 // we're done.

52 if (widget && widget->GetFocusManager()->RotatePaneFocus(

53 direction == BACKWARD ?

54 views::FocusManager::kBackward : views::FocusManager::kForward,

55 views::FocusManager::kNoWrap)) {

56 return;

57 }

58 }

59

60 const bool has_window = HasFocusableWindow();

61 int index = 0;

62 int count = static_cast<int>(widgets_.size());

63 int browser_index = has_window ? count : -1;

64

65 for (; index < count; ++index) {

66 if (widgets_[index]->IsActive())

67 break;

68 }

69

70 int start_index = index;

71

72 if (has_window)

73 ++count;

74

75 for (;;) {

76 if (direction == FORWARD)

77 index = (index + 1) % count;

78 else

79 index = ((index - 1) + count) % count;

80

81 // Ensure that we don't loop more than once.

82 if (index == start_index)

83 break;

84

85 if (index == browser_index) {

86 // Activate the most recently active browser window.

87 MruWindowTracker::WindowList mru_windows(

88 Shell::GetInstance()->mru_window_tracker()->BuildMruWindowList());

89 if (mru_windows.empty())

90 break;

91 WmWindow* window = mru_windows.front();

92 window->GetWindowState()->Activate();

93 views::Widget* widget = views::Widget::GetWidgetForNativeWindow(

94 WmWindowAura::GetAuraWindow(window));

95 if (!widget)

96 break;

97 views::FocusManager* focus_manager = widget->GetFocusManager();

98 focus_manager->ClearFocus();

99 focus_manager->RotatePaneFocus(

100 direction == BACKWARD ?

101 views::FocusManager::kBackward : views::FocusManager::kForward,

102 views::FocusManager::kWrap);

103 break;

104 } else {

105 if (FocusWidget(widgets_[index]))

106 break;

107 }

108 }

109 }

110

111 bool FocusCycler::FocusWidget(views::Widget* widget) {

112 // Note: It is not necessary to set the focus directly to the pane since that

113 // will be taken care of by the widget activation.

114 widget_activating_ = widget;

115 widget->Activate();

116 widget_activating_ = NULL;

117 return widget->IsActive();

118 }

119

120 } // namespace ash

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