message_center_widget_delegate.cc revision 5d1f7b1de12d16ceb2c938c56701a3e8bfa558f7 
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 "content/public/browser/user_metrics.h"
11#include "ui/base/accessibility/accessible_view_state.h"
12#include "ui/gfx/screen.h"
13#include "ui/message_center/message_center_style.h"
14#include "ui/message_center/message_center_util.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_spread_blank_space(true);
51  SetLayoutManager(layout);
52
53  AddAccelerator(ui::Accelerator(ui::VKEY_ESCAPE, ui::EF_NONE));
54
55  if (get_use_acceleration_when_possible()) {
56    SetPaintToLayer(true);
57    SetFillsBoundsOpaquely(true);
58  }
59
60  InitWidget();
61}
62
63MessageCenterWidgetDelegate::~MessageCenterWidgetDelegate() {
64  views::Widget* widget = GetWidget();
65  if (widget) {
66    widget->RemoveObserver(this);
67  }
68}
69
70views::View* MessageCenterWidgetDelegate::GetContentsView() {
71  return this;
72}
73
74views::NonClientFrameView*
75MessageCenterWidgetDelegate::CreateNonClientFrameView(views::Widget* widget) {
76  MessageCenterFrameView* frame_view = new MessageCenterFrameView();
77  border_insets_ = frame_view->GetInsets();
78  return frame_view;
79}
80
81void MessageCenterWidgetDelegate::DeleteDelegate() {
82  delete this;
83}
84
85views::Widget* MessageCenterWidgetDelegate::GetWidget() {
86  return View::GetWidget();
87}
88
89const views::Widget* MessageCenterWidgetDelegate::GetWidget() const {
90  return View::GetWidget();
91}
92
93void MessageCenterWidgetDelegate::OnWidgetActivationChanged(
94    views::Widget* widget,
95    bool active) {
96  if (!active) {
97    tray_->SendHideMessageCenter();
98  }
99}
100
101void MessageCenterWidgetDelegate::OnWidgetClosing(views::Widget* widget) {
102  SetIsClosing(true);
103  tray_->MarkMessageCenterHidden();
104}
105
106void MessageCenterWidgetDelegate::PreferredSizeChanged() {
107  GetWidget()->SetBounds(GetMessageCenterBounds());
108  views::View::PreferredSizeChanged();
109}
110
111gfx::Size MessageCenterWidgetDelegate::GetPreferredSize() {
112  int preferred_width = kNotificationWidth + 2 * kMarginBetweenItems;
113  return gfx::Size(preferred_width, GetHeightForWidth(preferred_width));
114}
115
116gfx::Size MessageCenterWidgetDelegate::GetMaximumSize() {
117  gfx::Size size = GetPreferredSize();
118  return size;
119}
120
121int MessageCenterWidgetDelegate::GetHeightForWidth(int width) {
122  int height = MessageCenterView::GetHeightForWidth(width);
123  return (pos_info_.max_height != 0) ?
124    std::min(height, pos_info_.max_height - border_insets_.height()) : height;
125}
126
127bool MessageCenterWidgetDelegate::AcceleratorPressed(
128    const ui::Accelerator& accelerator) {
129  if (accelerator.key_code() != ui::VKEY_ESCAPE)
130    return false;
131  tray_->SendHideMessageCenter();
132  return true;
133}
134
135void MessageCenterWidgetDelegate::InitWidget() {
136  views::Widget* widget = new views::Widget();
137  views::Widget::InitParams params(views::Widget::InitParams::TYPE_BUBBLE);
138  params.opacity = views::Widget::InitParams::TRANSLUCENT_WINDOW;
139  params.delegate = this;
140  params.keep_on_top = true;
141  params.top_level = true;
142#if defined(USE_ASH)
143  // This class is not used in Ash; there is another container for the message
144  // center that's used there.  So, we must be in a Views + Ash environment.  We
145  // want the notification center to be available on both desktops.  Setting the
146  // |native_widget| variable here ensures that the widget is hosted on the
147  // native desktop.
148  params.native_widget = new views::DesktopNativeWidgetAura(widget);
149#endif
150  widget->Init(params);
151
152  widget->AddObserver(this);
153  widget->StackAtTop();
154  widget->SetAlwaysOnTop(true);
155
156  const NotificationList::Notifications& notifications =
157      tray_->message_center()->GetVisibleNotifications();
158  SetNotifications(notifications);
159
160  widget->SetBounds(GetMessageCenterBounds());
161  widget->Show();
162  widget->Activate();
163}
164
165gfx::Point MessageCenterWidgetDelegate::GetCorrectedAnchor(
166    gfx::Size calculated_size) {
167  gfx::Point corrected_anchor = pos_info_.inital_anchor_point;
168
169  // Inset the width slightly so that the click point is not exactly on the edge
170  // of the message center but somewhere within the middle 60 %.
171  int insetted_width = (calculated_size.width() * 4) / 5;
172
173  if (pos_info_.taskbar_alignment == ALIGNMENT_TOP ||
174      pos_info_.taskbar_alignment == ALIGNMENT_BOTTOM) {
175    int click_point_x = tray_->mouse_click_point().x();
176
177    if (pos_info_.message_center_alignment & ALIGNMENT_RIGHT) {
178      int opposite_x_corner =
179          pos_info_.inital_anchor_point.x() - insetted_width;
180
181      // If the click point is outside the x axis length of the message center,
182      // push the message center towards the left to align with the click point.
183      if (opposite_x_corner > click_point_x)
184        corrected_anchor.set_x(pos_info_.inital_anchor_point.x() -
185                               (opposite_x_corner - click_point_x));
186    } else {
187      int opposite_x_corner =
188          pos_info_.inital_anchor_point.x() + insetted_width;
189
190      if (opposite_x_corner < click_point_x)
191        corrected_anchor.set_x(pos_info_.inital_anchor_point.x() +
192                               (click_point_x - opposite_x_corner));
193    }
194  } else if (pos_info_.taskbar_alignment == ALIGNMENT_LEFT ||
195             pos_info_.taskbar_alignment == ALIGNMENT_RIGHT) {
196    int click_point_y = tray_->mouse_click_point().y();
197
198    if (pos_info_.message_center_alignment & ALIGNMENT_BOTTOM) {
199      int opposite_y_corner =
200          pos_info_.inital_anchor_point.y() - insetted_width;
201
202      // If the click point is outside the y axis length of the message center,
203      // push the message center upwards to align with the click point.
204      if (opposite_y_corner > click_point_y)
205        corrected_anchor.set_y(pos_info_.inital_anchor_point.y() -
206                               (opposite_y_corner - click_point_y));
207    } else {
208      int opposite_y_corner =
209          pos_info_.inital_anchor_point.y() + insetted_width;
210
211      if (opposite_y_corner < click_point_y)
212        corrected_anchor.set_y(pos_info_.inital_anchor_point.y() +
213                               (click_point_y - opposite_y_corner));
214    }
215  }
216  return corrected_anchor;
217}
218
219gfx::Rect MessageCenterWidgetDelegate::GetMessageCenterBounds() {
220  gfx::Size size = GetPreferredSize();
221
222  // Make space for borders on sides.
223  size.Enlarge(border_insets_.width(), border_insets_.height());
224  gfx::Rect bounds(size);
225
226  gfx::Point corrected_anchor = GetCorrectedAnchor(size);
227
228  if (pos_info_.message_center_alignment & ALIGNMENT_TOP)
229    bounds.set_y(corrected_anchor.y());
230  if (pos_info_.message_center_alignment & ALIGNMENT_BOTTOM)
231    bounds.set_y(corrected_anchor.y() - size.height());
232  if (pos_info_.message_center_alignment & ALIGNMENT_LEFT)
233    bounds.set_x(corrected_anchor.x());
234  if (pos_info_.message_center_alignment & ALIGNMENT_RIGHT)
235    bounds.set_x(corrected_anchor.x() - size.width());
236
237  return bounds;
238}
239
240}  // namespace message_center
241