1 // Copyright 2014 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 "athena/system/power_button_controller.h"
6
7 #include "athena/screen/public/screen_manager.h"
8 #include "athena/strings/grit/athena_strings.h"
9 #include "chromeos/dbus/dbus_thread_manager.h"
10 #include "ui/base/l10n/l10n_util.h"
11 #include "ui/gfx/font_list.h"
12 #include "ui/views/background.h"
13 #include "ui/views/border.h"
14 #include "ui/views/controls/label.h"
15 #include "ui/views/layout/box_layout.h"
16 #include "ui/views/widget/widget.h"
17
18 namespace athena {
19 namespace {
20
21 // The amount of time that the power button must be held to show the shutdown
22 // warning dialog.
23 const int kShowShutdownWarningTimeoutMs = 1000;
24
25 // The amount of time that the power button must be held to shut down the
26 // device.
27 const int kShutdownTimeoutMs = 5000;
28
29 } // namespace
30
PowerButtonController(aura::Window * dialog_container)31 PowerButtonController::PowerButtonController(aura::Window* dialog_container)
32 : warning_message_container_(dialog_container),
33 brightness_is_zero_(false),
34 state_(STATE_OTHER) {
35 chromeos::DBusThreadManager::Get()->GetPowerManagerClient()->AddObserver(
36 this);
37 }
38
~PowerButtonController()39 PowerButtonController::~PowerButtonController() {
40 chromeos::DBusThreadManager::Get()->GetPowerManagerClient()->RemoveObserver(
41 this);
42 }
43
ShowShutdownWarningDialog()44 void PowerButtonController::ShowShutdownWarningDialog() {
45 state_ = STATE_SHUTDOWN_WARNING_VISIBLE;
46
47 shutdown_warning_message_.reset(new views::Widget);
48
49 views::Widget::InitParams params(views::Widget::InitParams::TYPE_POPUP);
50 params.ownership = views::Widget::InitParams::WIDGET_OWNS_NATIVE_WIDGET;
51 params.parent = warning_message_container_;
52 shutdown_warning_message_->Init(params);
53
54 views::Label* label =
55 new views::Label(l10n_util::GetStringUTF16(IDS_ATHENA_SHUTDOWN_WARNING));
56 label->SetBackgroundColor(SK_ColorWHITE);
57 label->SetFontList(gfx::FontList().DeriveWithStyle(gfx::Font::BOLD));
58
59 views::View* container = new views::View;
60 container->AddChildView(label);
61
62 const int kBorderSpacing = 50;
63 container->SetLayoutManager(new views::BoxLayout(
64 views::BoxLayout::kHorizontal, kBorderSpacing, kBorderSpacing, 0));
65 container->set_background(
66 views::Background::CreateSolidBackground(SK_ColorWHITE));
67 container->SetBorder(views::Border::CreateSolidBorder(1, SK_ColorBLACK));
68
69 shutdown_warning_message_->SetContentsView(container);
70 shutdown_warning_message_->CenterWindow(container->GetPreferredSize());
71 shutdown_warning_message_->Show();
72
73 timer_.Start(FROM_HERE,
74 base::TimeDelta::FromMilliseconds(kShutdownTimeoutMs -
75 kShowShutdownWarningTimeoutMs),
76 this,
77 &PowerButtonController::Shutdown);
78 }
79
Shutdown()80 void PowerButtonController::Shutdown() {
81 state_ = STATE_SHUTDOWN_REQUESTED;
82 chromeos::DBusThreadManager::Get()
83 ->GetPowerManagerClient()
84 ->RequestShutdown();
85 }
86
BrightnessChanged(int level,bool user_initiated)87 void PowerButtonController::BrightnessChanged(int level, bool user_initiated) {
88 if (brightness_is_zero_)
89 zero_brightness_end_time_ = base::TimeTicks::Now();
90 brightness_is_zero_ = (level == 0);
91 }
92
PowerButtonEventReceived(bool down,const base::TimeTicks & timestamp)93 void PowerButtonController::PowerButtonEventReceived(
94 bool down,
95 const base::TimeTicks& timestamp) {
96 if (state_ == STATE_SHUTDOWN_REQUESTED)
97 return;
98
99 // Avoid requesting suspend or shutdown if the power button is pressed while
100 // the screen is off (http://crbug.com/128451).
101 base::TimeDelta time_since_zero_brightness = brightness_is_zero_ ?
102 base::TimeDelta() : (base::TimeTicks::Now() - zero_brightness_end_time_);
103 const int kShortTimeMs = 10;
104 if (time_since_zero_brightness.InMilliseconds() <= kShortTimeMs)
105 return;
106
107 if (down) {
108 state_ = STATE_SUSPEND_ON_RELEASE;
109 timer_.Start(
110 FROM_HERE,
111 base::TimeDelta::FromMilliseconds(kShowShutdownWarningTimeoutMs),
112 this,
113 &PowerButtonController::ShowShutdownWarningDialog);
114 } else {
115 if (state_ == STATE_SUSPEND_ON_RELEASE) {
116 chromeos::DBusThreadManager::Get()
117 ->GetPowerManagerClient()
118 ->RequestSuspend();
119 }
120 state_ = STATE_OTHER;
121 timer_.Stop();
122 shutdown_warning_message_.reset();
123 }
124 }
125
126 } // namespace athena
127