message_center_widget_delegate.cc revision cedac228d2dd51db4b79ea1e72c7f249408ee061 
1// Copyright 2013 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 "chrome/browser/ui/views/message_center/message_center_widget_delegate.h"
6
7#include <complex>
8
9#include "chrome/browser/ui/views/message_center/message_center_frame_view.h"
10#include "chrome/browser/ui/views/message_center/web_notification_tray.h"
11#include "content/public/browser/user_metrics.h"
12#include "ui/accessibility/ax_view_state.h"
13#include "ui/gfx/screen.h"
14#include "ui/message_center/message_center_style.h"
15#include "ui/message_center/views/message_center_view.h"
16#include "ui/native_theme/native_theme.h"
17#include "ui/views/border.h"
18#include "ui/views/layout/box_layout.h"
19#include "ui/views/widget/widget.h"
20
21#if defined(OS_WIN)
22#include "ui/views/win/hwnd_util.h"
23#endif
24
25#if defined(USE_ASH)
26#include "ui/views/widget/desktop_aura/desktop_native_widget_aura.h"
27#endif
28
29namespace message_center {
30
31MessageCenterWidgetDelegate::MessageCenterWidgetDelegate(
32    WebNotificationTray* tray,
33    MessageCenterTray* mc_tray,
34    bool initially_settings_visible,
35    const PositionInfo& pos_info)
36    : MessageCenterView(tray->message_center(),
37                        mc_tray,
38                        pos_info.max_height,
39                        initially_settings_visible,
40                        pos_info.message_center_alignment &
41                            ALIGNMENT_TOP),  // Show buttons on top if message
42                                             // center is top aligned
43      pos_info_(pos_info),
44      tray_(tray) {
45  // A WidgetDelegate should be deleted on DeleteDelegate.
46  set_owned_by_client();
47
48  views::BoxLayout* layout =
49      new views::BoxLayout(views::BoxLayout::kVertical, 0, 0, 0);
50  layout->set_main_axis_alignment(views::BoxLayout::MAIN_AXIS_ALIGNMENT_FILL);
51  SetLayoutManager(layout);
52
53  AddAccelerator(ui::Accelerator(ui::VKEY_ESCAPE, ui::EF_NONE));
54
55  SetPaintToLayer(true);
56  SetFillsBoundsOpaquely(true);
57
58  InitWidget();
59}
60
61MessageCenterWidgetDelegate::~MessageCenterWidgetDelegate() {
62  views::Widget* widget = GetWidget();
63  if (widget) {
64    widget->RemoveObserver(this);
65  }
66}
67
68views::View* MessageCenterWidgetDelegate::GetContentsView() {
69  return this;
70}
71
72views::NonClientFrameView*
73MessageCenterWidgetDelegate::CreateNonClientFrameView(views::Widget* widget) {
74  MessageCenterFrameView* frame_view = new MessageCenterFrameView();
75  border_insets_ = frame_view->GetInsets();
76  return frame_view;
77}
78
79void MessageCenterWidgetDelegate::DeleteDelegate() {
80  delete this;
81}
82
83views::Widget* MessageCenterWidgetDelegate::GetWidget() {
84  return View::GetWidget();
85}
86
87const views::Widget* MessageCenterWidgetDelegate::GetWidget() const {
88  return View::GetWidget();
89}
90
91void MessageCenterWidgetDelegate::OnWidgetActivationChanged(
92    views::Widget* widget,
93    bool active) {
94  // Some Linux users set 'focus-follows-mouse' where the activation is lost
95  // immediately after the mouse exists from the bubble, which is a really bad
96  // experience. Disable hiding until the bug around the focus is fixed.
97  // TODO(erg, pkotwicz): fix the activation issue and then remove this ifdef.
98#if !defined(OS_LINUX)
99  if (!active) {
100    tray_->SendHideMessageCenter();
101  }
102#endif
103}
104
105void MessageCenterWidgetDelegate::OnWidgetClosing(views::Widget* widget) {
106  SetIsClosing(true);
107  tray_->MarkMessageCenterHidden();
108}
109
110void MessageCenterWidgetDelegate::PreferredSizeChanged() {
111  GetWidget()->SetBounds(GetMessageCenterBounds());
112  views::View::PreferredSizeChanged();
113}
114
115gfx::Size MessageCenterWidgetDelegate::GetPreferredSize() const {
116  int preferred_width = kNotificationWidth + 2 * kMarginBetweenItems;
117  return gfx::Size(preferred_width, GetHeightForWidth(preferred_width));
118}
119
120gfx::Size MessageCenterWidgetDelegate::GetMaximumSize() const {
121  gfx::Size size = GetPreferredSize();
122  return size;
123}
124
125int MessageCenterWidgetDelegate::GetHeightForWidth(int width) const {
126  int height = MessageCenterView::GetHeightForWidth(width);
127  return (pos_info_.max_height != 0) ?
128    std::min(height, pos_info_.max_height - border_insets_.height()) : height;
129}
130
131bool MessageCenterWidgetDelegate::AcceleratorPressed(
132    const ui::Accelerator& accelerator) {
133  if (accelerator.key_code() != ui::VKEY_ESCAPE)
134    return false;
135  tray_->SendHideMessageCenter();
136  return true;
137}
138
139void MessageCenterWidgetDelegate::InitWidget() {
140  views::Widget* widget = new views::Widget();
141  views::Widget::InitParams params(views::Widget::InitParams::TYPE_BUBBLE);
142  params.opacity = views::Widget::InitParams::TRANSLUCENT_WINDOW;
143  params.delegate = this;
144  params.keep_on_top = true;
145#if defined(USE_ASH)
146  // This class is not used in Ash; there is another container for the message
147  // center that's used there.  So, we must be in a Views + Ash environment.  We
148  // want the notification center to be available on both desktops.  Setting the
149  // |native_widget| variable here ensures that the widget is hosted on the
150  // native desktop.
151  params.native_widget = new views::DesktopNativeWidgetAura(widget);
152#endif
153  widget->Init(params);
154
155  widget->AddObserver(this);
156  widget->StackAtTop();
157  widget->SetAlwaysOnTop(true);
158
159  const NotificationList::Notifications& notifications =
160      tray_->message_center()->GetVisibleNotifications();
161  SetNotifications(notifications);
162
163  widget->SetBounds(GetMessageCenterBounds());
164  widget->Show();
165  widget->Activate();
166}
167
168gfx::Point MessageCenterWidgetDelegate::GetCorrectedAnchor(
169    gfx::Size calculated_size) {
170  gfx::Point corrected_anchor = pos_info_.inital_anchor_point;
171
172  // Inset the width slightly so that the click point is not exactly on the edge
173  // of the message center but somewhere within the middle 60 %.
174  int insetted_width = (calculated_size.width() * 4) / 5;
175
176  if (pos_info_.taskbar_alignment == ALIGNMENT_TOP ||
177      pos_info_.taskbar_alignment == ALIGNMENT_BOTTOM) {
178    int click_point_x = tray_->mouse_click_point().x();
179
180    if (pos_info_.message_center_alignment & ALIGNMENT_RIGHT) {
181      int opposite_x_corner =
182          pos_info_.inital_anchor_point.x() - insetted_width;
183
184      // If the click point is outside the x axis length of the message center,
185      // push the message center towards the left to align with the click point.
186      if (opposite_x_corner > click_point_x)
187        corrected_anchor.set_x(pos_info_.inital_anchor_point.x() -
188                               (opposite_x_corner - click_point_x));
189    } else {
190      int opposite_x_corner =
191          pos_info_.inital_anchor_point.x() + insetted_width;
192
193      if (opposite_x_corner < click_point_x)
194        corrected_anchor.set_x(pos_info_.inital_anchor_point.x() +
195                               (click_point_x - opposite_x_corner));
196    }
197  } else if (pos_info_.taskbar_alignment == ALIGNMENT_LEFT ||
198             pos_info_.taskbar_alignment == ALIGNMENT_RIGHT) {
199    int click_point_y = tray_->mouse_click_point().y();
200
201    if (pos_info_.message_center_alignment & ALIGNMENT_BOTTOM) {
202      int opposite_y_corner =
203          pos_info_.inital_anchor_point.y() - insetted_width;
204
205      // If the click point is outside the y axis length of the message center,
206      // push the message center upwards to align with the click point.
207      if (opposite_y_corner > click_point_y)
208        corrected_anchor.set_y(pos_info_.inital_anchor_point.y() -
209                               (opposite_y_corner - click_point_y));
210    } else {
211      int opposite_y_corner =
212          pos_info_.inital_anchor_point.y() + insetted_width;
213
214      if (opposite_y_corner < click_point_y)
215        corrected_anchor.set_y(pos_info_.inital_anchor_point.y() +
216                               (click_point_y - opposite_y_corner));
217    }
218  }
219  return corrected_anchor;
220}
221
222gfx::Rect MessageCenterWidgetDelegate::GetMessageCenterBounds() {
223  gfx::Size size = GetPreferredSize();
224
225  // Make space for borders on sides.
226  size.Enlarge(border_insets_.width(), border_insets_.height());
227  gfx::Rect bounds(size);
228
229  gfx::Point corrected_anchor = GetCorrectedAnchor(size);
230
231  if (pos_info_.message_center_alignment & ALIGNMENT_TOP)
232    bounds.set_y(corrected_anchor.y());
233  if (pos_info_.message_center_alignment & ALIGNMENT_BOTTOM)
234    bounds.set_y(corrected_anchor.y() - size.height());
235  if (pos_info_.message_center_alignment & ALIGNMENT_LEFT)
236    bounds.set_x(corrected_anchor.x());
237  if (pos_info_.message_center_alignment & ALIGNMENT_RIGHT)
238    bounds.set_x(corrected_anchor.x() - size.width());
239
240  return bounds;
241}
242
243}  // namespace message_center
244