src/ui/message_center/views/notifier_settings_view.cc

   1 // Copyright (c) 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 "ui/message_center/views/notifier_settings_view.h"
   6
   7 #include <set>
   8 #include <string>
   9
  10 #include "base/strings/string16.h"
  11 #include "base/strings/utf_string_conversions.h"
  12 #include "skia/ext/image_operations.h"
  13 #include "third_party/skia/include/core/SkColor.h"
  14 #include "ui/base/l10n/l10n_util.h"
  15 #include "ui/base/models/simple_menu_model.h"
  16 #include "ui/base/resource/resource_bundle.h"
  17 #include "ui/events/keycodes/keyboard_codes.h"
  18 #include "ui/gfx/canvas.h"
  19 #include "ui/gfx/image/image.h"
  20 #include "ui/gfx/size.h"
  21 #include "ui/message_center/message_center_style.h"
  22 #include "ui/message_center/views/message_center_view.h"
  23 #include "ui/resources/grit/ui_resources.h"
  24 #include "ui/strings/grit/ui_strings.h"
  25 #include "ui/views/background.h"
  26 #include "ui/views/border.h"
  27 #include "ui/views/controls/button/checkbox.h"
  28 #include "ui/views/controls/button/label_button_border.h"
  29 #include "ui/views/controls/button/menu_button.h"
  30 #include "ui/views/controls/image_view.h"
  31 #include "ui/views/controls/label.h"
  32 #include "ui/views/controls/link.h"
  33 #include "ui/views/controls/link_listener.h"
  34 #include "ui/views/controls/menu/menu_runner.h"
  35 #include "ui/views/controls/scroll_view.h"
  36 #include "ui/views/controls/scrollbar/overlay_scroll_bar.h"
  37 #include "ui/views/layout/box_layout.h"
  38 #include "ui/views/layout/fill_layout.h"
  39 #include "ui/views/layout/grid_layout.h"
  40 #include "ui/views/painter.h"
  41 #include "ui/views/widget/widget.h"
  42
  43 namespace message_center {
  44 namespace settings {
  45
  46 // Additional views-specific parameters.
  47
  48 // The width of the settings pane in pixels.
  49 const int kWidth = 360;
  50
  51 // The width of the learn more icon in pixels.
  52 const int kLearnMoreSize = 12;
  53
  54 // The width of the click target that contains the learn more button in pixels.
  55 const int kLearnMoreTargetWidth = 28;
  56
  57 // The height of the click target that contains the learn more button in pixels.
  58 const int kLearnMoreTargetHeight = 40;
  59
  60 // The minimum height of the settings pane in pixels.
  61 const int kMinimumHeight = 480;
  62
  63 // The horizontal margin of the title area of the settings pane in addition to
  64 // the standard margin from settings::kHorizontalMargin.
  65 const int kTitleMargin = 10;
  66
  67 }  // namespace settings
  68
  69 namespace {
  70
  71 // Menu button metrics to make the text line up.
  72 const int kMenuButtonInnateMargin = 2;
  73
  74 // Used to place the context menu correctly.
  75 const int kMenuWhitespaceOffset = 2;
  76
  77 // The innate vertical blank space in the label for the title of the settings
  78 // pane.
  79 const int kInnateTitleBottomMargin = 1;
  80 const int kInnateTitleTopMargin = 7;
  81
  82 // The innate top blank space in the label for the description of the settings
  83 // pane.
  84 const int kInnateDescriptionTopMargin = 2;
  85
  86 // Checkboxes have some built-in right padding blank space.
  87 const int kInnateCheckboxRightPadding = 2;
  88
  89 // Spec defines the checkbox size; the innate padding throws this measurement
  90 // off so we need to compute a slightly different area for the checkbox to
  91 // inhabit.
  92 const int kComputedCheckboxSize =
  93     settings::kCheckboxSizeWithPadding - kInnateCheckboxRightPadding;
  94
  95 // The menubutton has innate margin, so we need to compensate for that when
  96 // figuring the margin of the title area.
  97 const int kComputedContentsTitleMargin = 0 - kMenuButtonInnateMargin;
  98
  99 // The spec doesn't include the bottom blank area of the title bar or the innate
 100 // blank area in the description label, so we'll use this as the space between
 101 // the title and description.
 102 const int kComputedTitleBottomMargin = settings::kDescriptionToSwitcherSpace -
 103                                        kInnateTitleBottomMargin -
 104                                        kInnateDescriptionTopMargin;
 105
 106 // The blank space above the title needs to be adjusted by the amount of blank
 107 // space included in the title label.
 108 const int kComputedTitleTopMargin =
 109     settings::kTopMargin - kInnateTitleTopMargin;
 110
 111 // The switcher has a lot of blank space built in so we should include that when
 112 // spacing the title area vertically.
 113 const int kComputedTitleElementSpacing =
 114     settings::kDescriptionToSwitcherSpace - 6;
 115
 116 // A function to create a focus border.
 117 scoped_ptr<views::Painter> CreateFocusPainter() {
 118   return views::Painter::CreateSolidFocusPainter(kFocusBorderColor,
 119                                                  gfx::Insets(1, 2, 3, 2));
 120 }
 121
 122 // EntryView ------------------------------------------------------------------
 123
 124 // The view to guarantee the 48px height and place the contents at the
 125 // middle. It also guarantee the left margin.
 126 class EntryView : public views::View {
 127  public:
 128   explicit EntryView(views::View* contents);
 129   virtual ~EntryView();
 130
 131   // views::View:
 132   virtual void Layout() OVERRIDE;
 133   virtual gfx::Size GetPreferredSize() const OVERRIDE;
 134   virtual void GetAccessibleState(ui::AXViewState* state) OVERRIDE;
 135   virtual void OnFocus() OVERRIDE;
 136   virtual bool OnKeyPressed(const ui::KeyEvent& event) OVERRIDE;
 137   virtual bool OnKeyReleased(const ui::KeyEvent& event) OVERRIDE;
 138   virtual void OnPaint(gfx::Canvas* canvas) OVERRIDE;
 139   virtual void OnBlur() OVERRIDE;
 140
 141  private:
 142   scoped_ptr<views::Painter> focus_painter_;
 143
 144   DISALLOW_COPY_AND_ASSIGN(EntryView);
 145 };
 146
 147 EntryView::EntryView(views::View* contents)
 148     : focus_painter_(CreateFocusPainter()) {
 149   AddChildView(contents);
 150 }
 151
 152 EntryView::~EntryView() {}
 153
 154 void EntryView::Layout() {
 155   DCHECK_EQ(1, child_count());
 156   views::View* content = child_at(0);
 157   int content_width = width();
 158   int content_height = content->GetHeightForWidth(content_width);
 159   int y = std::max((height() - content_height) / 2, 0);
 160   content->SetBounds(0, y, content_width, content_height);
 161 }
 162
 163 gfx::Size EntryView::GetPreferredSize() const {
 164   DCHECK_EQ(1, child_count());
 165   gfx::Size size = child_at(0)->GetPreferredSize();
 166   size.SetToMax(gfx::Size(settings::kWidth, settings::kEntryHeight));
 167   return size;
 168 }
 169
 170 void EntryView::GetAccessibleState(ui::AXViewState* state) {
 171   DCHECK_EQ(1, child_count());
 172   child_at(0)->GetAccessibleState(state);
 173 }
 174
 175 void EntryView::OnFocus() {
 176   views::View::OnFocus();
 177   ScrollRectToVisible(GetLocalBounds());
 178   // We render differently when focused.
 179   SchedulePaint();
 180 }
 181
 182 bool EntryView::OnKeyPressed(const ui::KeyEvent& event) {
 183   return child_at(0)->OnKeyPressed(event);
 184 }
 185
 186 bool EntryView::OnKeyReleased(const ui::KeyEvent& event) {
 187   return child_at(0)->OnKeyReleased(event);
 188 }
 189
 190 void EntryView::OnPaint(gfx::Canvas* canvas) {
 191   View::OnPaint(canvas);
 192   views::Painter::PaintFocusPainter(this, canvas, focus_painter_.get());
 193 }
 194
 195 void EntryView::OnBlur() {
 196   View::OnBlur();
 197   // We render differently when focused.
 198   SchedulePaint();
 199 }
 200
 201 }  // namespace
 202
 203
 204 // NotifierGroupMenuModel -----------------------------------------------------
 205
 206 class NotifierGroupMenuModel : public ui::SimpleMenuModel,
 207                                public ui::SimpleMenuModel::Delegate {
 208  public:
 209   NotifierGroupMenuModel(NotifierSettingsProvider* notifier_settings_provider);
 210   virtual ~NotifierGroupMenuModel();
 211
 212   // ui::SimpleMenuModel::Delegate:
 213   virtual bool IsCommandIdChecked(int command_id) const OVERRIDE;
 214   virtual bool IsCommandIdEnabled(int command_id) const OVERRIDE;
 215   virtual bool GetAcceleratorForCommandId(
 216       int command_id,
 217       ui::Accelerator* accelerator) OVERRIDE;
 218   virtual void ExecuteCommand(int command_id, int event_flags) OVERRIDE;
 219
 220  private:
 221   NotifierSettingsProvider* notifier_settings_provider_;
 222
 223   DISALLOW_COPY_AND_ASSIGN(NotifierGroupMenuModel);
 224 };
 225
 226 NotifierGroupMenuModel::NotifierGroupMenuModel(
 227     NotifierSettingsProvider* notifier_settings_provider)
 228     : ui::SimpleMenuModel(this),
 229       notifier_settings_provider_(notifier_settings_provider) {
 230   if (!notifier_settings_provider_)
 231     return;
 232
 233   size_t num_menu_items = notifier_settings_provider_->GetNotifierGroupCount();
 234   for (size_t i = 0; i < num_menu_items; ++i) {
 235     const NotifierGroup& group =
 236         notifier_settings_provider_->GetNotifierGroupAt(i);
 237
 238     AddCheckItem(i, group.login_info.empty() ? group.name : group.login_info);
 239   }
 240 }
 241
 242 NotifierGroupMenuModel::~NotifierGroupMenuModel() {}
 243
 244 bool NotifierGroupMenuModel::IsCommandIdChecked(int command_id) const {
 245   // If there's no provider, assume only one notifier group - the active one.
 246   return !notifier_settings_provider_ ||
 247       notifier_settings_provider_->IsNotifierGroupActiveAt(command_id);
 248 }
 249
 250 bool NotifierGroupMenuModel::IsCommandIdEnabled(int command_id) const {
 251   return true;
 252 }
 253
 254 bool NotifierGroupMenuModel::GetAcceleratorForCommandId(
 255     int command_id,
 256     ui::Accelerator* accelerator) {
 257   return false;
 258 }
 259
 260 void NotifierGroupMenuModel::ExecuteCommand(int command_id, int event_flags) {
 261   if (!notifier_settings_provider_)
 262     return;
 263
 264   size_t notifier_group_index = static_cast<size_t>(command_id);
 265   size_t num_notifier_groups =
 266       notifier_settings_provider_->GetNotifierGroupCount();
 267   if (notifier_group_index >= num_notifier_groups)
 268     return;
 269
 270   notifier_settings_provider_->SwitchToNotifierGroup(notifier_group_index);
 271 }
 272
 273
 274 // NotifierSettingsView::NotifierButton ---------------------------------------
 275
 276 // We do not use views::Checkbox class directly because it doesn't support
 277 // showing 'icon'.
 278 NotifierSettingsView::NotifierButton::NotifierButton(
 279     NotifierSettingsProvider* provider,
 280     Notifier* notifier,
 281     views::ButtonListener* listener)
 282     : views::CustomButton(listener),
 283       provider_(provider),
 284       notifier_(notifier),
 285       icon_view_(new views::ImageView()),
 286       name_view_(new views::Label(notifier_->name)),
 287       checkbox_(new views::Checkbox(base::string16())),
 288       learn_more_(NULL) {
 289   DCHECK(provider);
 290   DCHECK(notifier);
 291
 292   // Since there may never be an icon (but that could change at a later time),
 293   // we own the icon view here.
 294   icon_view_->set_owned_by_client();
 295
 296   checkbox_->SetChecked(notifier_->enabled);
 297   checkbox_->set_listener(this);
 298   checkbox_->SetFocusable(false);
 299   checkbox_->SetAccessibleName(notifier_->name);
 300
 301   if (ShouldHaveLearnMoreButton()) {
 302     // Create a more-info button that will be right-aligned.
 303     learn_more_ = new views::ImageButton(this);
 304     learn_more_->SetFocusPainter(CreateFocusPainter());
 305     learn_more_->set_request_focus_on_press(false);
 306     learn_more_->SetFocusable(true);
 307
 308     ui::ResourceBundle& rb = ResourceBundle::GetSharedInstance();
 309     learn_more_->SetImage(
 310         views::Button::STATE_NORMAL,
 311         rb.GetImageSkiaNamed(IDR_NOTIFICATION_ADVANCED_SETTINGS));
 312     learn_more_->SetImage(
 313         views::Button::STATE_HOVERED,
 314         rb.GetImageSkiaNamed(IDR_NOTIFICATION_ADVANCED_SETTINGS_HOVER));
 315     learn_more_->SetImage(
 316         views::Button::STATE_PRESSED,
 317         rb.GetImageSkiaNamed(IDR_NOTIFICATION_ADVANCED_SETTINGS_PRESSED));
 318     learn_more_->SetState(views::Button::STATE_NORMAL);
 319     int learn_more_border_width =
 320         (settings::kLearnMoreTargetWidth - settings::kLearnMoreSize) / 2;
 321     int learn_more_border_height =
 322         (settings::kLearnMoreTargetHeight - settings::kLearnMoreSize) / 2;
 323     // The image itself is quite small, this large invisible border creates a
 324     // much bigger click target.
 325     learn_more_->SetBorder(
 326         views::Border::CreateEmptyBorder(learn_more_border_height,
 327                                          learn_more_border_width,
 328                                          learn_more_border_height,
 329                                          learn_more_border_width));
 330     learn_more_->SetImageAlignment(views::ImageButton::ALIGN_CENTER,
 331                                    views::ImageButton::ALIGN_MIDDLE);
 332   }
 333
 334   UpdateIconImage(notifier_->icon);
 335 }
 336
 337 NotifierSettingsView::NotifierButton::~NotifierButton() {
 338 }
 339
 340 void NotifierSettingsView::NotifierButton::UpdateIconImage(
 341     const gfx::Image& icon) {
 342   bool has_icon_view = false;
 343
 344   notifier_->icon = icon;
 345   if (!icon.IsEmpty()) {
 346     icon_view_->SetImage(icon.ToImageSkia());
 347     icon_view_->SetImageSize(
 348         gfx::Size(settings::kEntryIconSize, settings::kEntryIconSize));
 349     has_icon_view = true;
 350   }
 351   GridChanged(ShouldHaveLearnMoreButton(), has_icon_view);
 352 }
 353
 354 void NotifierSettingsView::NotifierButton::SetChecked(bool checked) {
 355   checkbox_->SetChecked(checked);
 356   notifier_->enabled = checked;
 357 }
 358
 359 bool NotifierSettingsView::NotifierButton::checked() const {
 360   return checkbox_->checked();
 361 }
 362
 363 bool NotifierSettingsView::NotifierButton::has_learn_more() const {
 364   return learn_more_ != NULL;
 365 }
 366
 367 const Notifier& NotifierSettingsView::NotifierButton::notifier() const {
 368   return *notifier_.get();
 369 }
 370
 371 void NotifierSettingsView::NotifierButton::SendLearnMorePressedForTest() {
 372   if (learn_more_ == NULL)
 373     return;
 374   gfx::Point point(110, 120);
 375   ui::MouseEvent pressed(
 376       ui::ET_MOUSE_PRESSED, point, point, ui::EF_LEFT_MOUSE_BUTTON,
 377       ui::EF_LEFT_MOUSE_BUTTON);
 378   ButtonPressed(learn_more_, pressed);
 379 }
 380
 381 void NotifierSettingsView::NotifierButton::ButtonPressed(
 382     views::Button* button,
 383     const ui::Event& event) {
 384   if (button == checkbox_) {
 385     // The checkbox state has already changed at this point, but we'll update
 386     // the state on NotifierSettingsView::ButtonPressed() too, so here change
 387     // back to the previous state.
 388     checkbox_->SetChecked(!checkbox_->checked());
 389     CustomButton::NotifyClick(event);
 390   } else if (button == learn_more_) {
 391     DCHECK(provider_);
 392     provider_->OnNotifierAdvancedSettingsRequested(notifier_->notifier_id,
 393                                                    NULL);
 394   }
 395 }
 396
 397 void NotifierSettingsView::NotifierButton::GetAccessibleState(
 398     ui::AXViewState* state) {
 399   static_cast<views::View*>(checkbox_)->GetAccessibleState(state);
 400 }
 401
 402 bool NotifierSettingsView::NotifierButton::ShouldHaveLearnMoreButton() const {
 403   if (!provider_)
 404     return false;
 405
 406   return provider_->NotifierHasAdvancedSettings(notifier_->notifier_id);
 407 }
 408
 409 void NotifierSettingsView::NotifierButton::GridChanged(bool has_learn_more,
 410                                                        bool has_icon_view) {
 411   using views::ColumnSet;
 412   using views::GridLayout;
 413
 414   GridLayout* layout = new GridLayout(this);
 415   SetLayoutManager(layout);
 416   ColumnSet* cs = layout->AddColumnSet(0);
 417   // Add a column for the checkbox.
 418   cs->AddPaddingColumn(0, kInnateCheckboxRightPadding);
 419   cs->AddColumn(GridLayout::CENTER,
 420                 GridLayout::CENTER,
 421                 0,
 422                 GridLayout::FIXED,
 423                 kComputedCheckboxSize,
 424                 0);
 425   cs->AddPaddingColumn(0, settings::kInternalHorizontalSpacing);
 426
 427   if (has_icon_view) {
 428     // Add a column for the icon.
 429     cs->AddColumn(GridLayout::CENTER,
 430                   GridLayout::CENTER,
 431                   0,
 432                   GridLayout::FIXED,
 433                   settings::kEntryIconSize,
 434                   0);
 435     cs->AddPaddingColumn(0, settings::kInternalHorizontalSpacing);
 436   }
 437
 438   // Add a column for the name.
 439   cs->AddColumn(
 440       GridLayout::LEADING, GridLayout::CENTER, 0, GridLayout::USE_PREF, 0, 0);
 441
 442   // Add a padding column which contains expandable blank space.
 443   cs->AddPaddingColumn(1, 0);
 444
 445   // Add a column for the learn more button if necessary.
 446   if (has_learn_more) {
 447     cs->AddPaddingColumn(0, settings::kInternalHorizontalSpacing);
 448     cs->AddColumn(
 449         GridLayout::CENTER, GridLayout::CENTER, 0, GridLayout::USE_PREF, 0, 0);
 450   }
 451
 452   layout->StartRow(0, 0);
 453   layout->AddView(checkbox_);
 454   if (has_icon_view)
 455     layout->AddView(icon_view_.get());
 456   layout->AddView(name_view_);
 457   if (has_learn_more)
 458     layout->AddView(learn_more_);
 459
 460   Layout();
 461 }
 462
 463
 464 // NotifierSettingsView -------------------------------------------------------
 465
 466 NotifierSettingsView::NotifierSettingsView(NotifierSettingsProvider* provider)
 467     : title_arrow_(NULL),
 468       title_label_(NULL),
 469       notifier_group_selector_(NULL),
 470       scroller_(NULL),
 471       provider_(provider) {
 472   // |provider_| may be NULL in tests.
 473   if (provider_)
 474     provider_->AddObserver(this);
 475
 476   SetFocusable(true);
 477   set_background(
 478       views::Background::CreateSolidBackground(kMessageCenterBackgroundColor));
 479   SetPaintToLayer(true);
 480
 481   title_label_ = new views::Label(
 482       l10n_util::GetStringUTF16(IDS_MESSAGE_CENTER_SETTINGS_BUTTON_LABEL),
 483       ui::ResourceBundle::GetSharedInstance().GetFontList(
 484           ui::ResourceBundle::MediumFont));
 485   title_label_->SetHorizontalAlignment(gfx::ALIGN_LEFT);
 486   title_label_->SetMultiLine(true);
 487   title_label_->SetBorder(
 488       views::Border::CreateEmptyBorder(kComputedTitleTopMargin,
 489                                        settings::kTitleMargin,
 490                                        kComputedTitleBottomMargin,
 491                                        settings::kTitleMargin));
 492
 493   AddChildView(title_label_);
 494
 495   scroller_ = new views::ScrollView();
 496   scroller_->SetVerticalScrollBar(new views::OverlayScrollBar(false));
 497   AddChildView(scroller_);
 498
 499   std::vector<Notifier*> notifiers;
 500   if (provider_)
 501     provider_->GetNotifierList(&notifiers);
 502
 503   UpdateContentsView(notifiers);
 504 }
 505
 506 NotifierSettingsView::~NotifierSettingsView() {
 507   // |provider_| may be NULL in tests.
 508   if (provider_)
 509     provider_->RemoveObserver(this);
 510 }
 511
 512 bool NotifierSettingsView::IsScrollable() {
 513   return scroller_->height() < scroller_->contents()->height();
 514 }
 515
 516 void NotifierSettingsView::UpdateIconImage(const NotifierId& notifier_id,
 517                                            const gfx::Image& icon) {
 518   for (std::set<NotifierButton*>::iterator iter = buttons_.begin();
 519        iter != buttons_.end();
 520        ++iter) {
 521     if ((*iter)->notifier().notifier_id == notifier_id) {
 522       (*iter)->UpdateIconImage(icon);
 523       return;
 524     }
 525   }
 526 }
 527
 528 void NotifierSettingsView::NotifierGroupChanged() {
 529   std::vector<Notifier*> notifiers;
 530   if (provider_)
 531     provider_->GetNotifierList(&notifiers);
 532
 533   UpdateContentsView(notifiers);
 534 }
 535
 536 void NotifierSettingsView::NotifierEnabledChanged(const NotifierId& notifier_id,
 537                                                   bool enabled) {}
 538
 539 void NotifierSettingsView::UpdateContentsView(
 540     const std::vector<Notifier*>& notifiers) {
 541   buttons_.clear();
 542
 543   views::View* contents_view = new views::View();
 544   contents_view->SetLayoutManager(new views::BoxLayout(
 545       views::BoxLayout::kVertical, settings::kHorizontalMargin, 0, 0));
 546
 547   views::View* contents_title_view = new views::View();
 548   contents_title_view->SetLayoutManager(
 549       new views::BoxLayout(views::BoxLayout::kVertical,
 550                            kComputedContentsTitleMargin,
 551                            0,
 552                            kComputedTitleElementSpacing));
 553
 554   bool need_account_switcher =
 555       provider_ && provider_->GetNotifierGroupCount() > 1;
 556   int top_label_resource_id =
 557       need_account_switcher ? IDS_MESSAGE_CENTER_SETTINGS_DESCRIPTION_MULTIUSER
 558                             : IDS_MESSAGE_CENTER_SETTINGS_DIALOG_DESCRIPTION;
 559
 560   views::Label* top_label =
 561       new views::Label(l10n_util::GetStringUTF16(top_label_resource_id));
 562
 563   top_label->SetHorizontalAlignment(gfx::ALIGN_LEFT);
 564   top_label->SetMultiLine(true);
 565   top_label->SetBorder(views::Border::CreateEmptyBorder(
 566       0,
 567       settings::kTitleMargin + kMenuButtonInnateMargin,
 568       0,
 569       settings::kTitleMargin + kMenuButtonInnateMargin));
 570   contents_title_view->AddChildView(top_label);
 571
 572   if (need_account_switcher) {
 573     const NotifierGroup& active_group = provider_->GetActiveNotifierGroup();
 574     base::string16 notifier_group_text = active_group.login_info.empty() ?
 575         active_group.name : active_group.login_info;
 576     notifier_group_selector_ =
 577         new views::MenuButton(NULL, notifier_group_text, this, true);
 578     notifier_group_selector_->SetBorder(scoped_ptr<views::Border>(
 579         new views::LabelButtonBorder(views::Button::STYLE_BUTTON)).Pass());
 580     notifier_group_selector_->SetFocusPainter(scoped_ptr<views::Painter>());
 581     notifier_group_selector_->set_animate_on_state_change(false);
 582     notifier_group_selector_->SetFocusable(true);
 583     contents_title_view->AddChildView(notifier_group_selector_);
 584   }
 585
 586   contents_view->AddChildView(contents_title_view);
 587
 588   size_t notifier_count = notifiers.size();
 589   for (size_t i = 0; i < notifier_count; ++i) {
 590     NotifierButton* button = new NotifierButton(provider_, notifiers[i], this);
 591     EntryView* entry = new EntryView(button);
 592
 593     // This code emulates separators using borders.  We will create an invisible
 594     // border on the last notifier, as the spec leaves a space for it.
 595     scoped_ptr<views::Border> entry_border;
 596     if (i == notifier_count - 1) {
 597       entry_border = views::Border::CreateEmptyBorder(
 598           0, 0, settings::kEntrySeparatorHeight, 0);
 599     } else {
 600       entry_border =
 601           views::Border::CreateSolidSidedBorder(0,
 602                                                 0,
 603                                                 settings::kEntrySeparatorHeight,
 604                                                 0,
 605                                                 settings::kEntrySeparatorColor);
 606     }
 607     entry->SetBorder(entry_border.Pass());
 608     entry->SetFocusable(true);
 609     contents_view->AddChildView(entry);
 610     buttons_.insert(button);
 611   }
 612
 613   scroller_->SetContents(contents_view);
 614
 615   contents_view->SetBoundsRect(gfx::Rect(contents_view->GetPreferredSize()));
 616   InvalidateLayout();
 617 }
 618
 619 void NotifierSettingsView::Layout() {
 620   int title_height = title_label_->GetHeightForWidth(width());
 621   title_label_->SetBounds(settings::kTitleMargin,
 622                           0,
 623                           width() - settings::kTitleMargin * 2,
 624                           title_height);
 625
 626   views::View* contents_view = scroller_->contents();
 627   int content_width = width();
 628   int content_height = contents_view->GetHeightForWidth(content_width);
 629   if (title_height + content_height > height()) {
 630     content_width -= scroller_->GetScrollBarWidth();
 631     content_height = contents_view->GetHeightForWidth(content_width);
 632   }
 633   contents_view->SetBounds(0, 0, content_width, content_height);
 634   scroller_->SetBounds(0, title_height, width(), height() - title_height);
 635 }
 636
 637 gfx::Size NotifierSettingsView::GetMinimumSize() const {
 638   gfx::Size size(settings::kWidth, settings::kMinimumHeight);
 639   int total_height = title_label_->GetPreferredSize().height() +
 640                      scroller_->contents()->GetPreferredSize().height();
 641   if (total_height > settings::kMinimumHeight)
 642     size.Enlarge(scroller_->GetScrollBarWidth(), 0);
 643   return size;
 644 }
 645
 646 gfx::Size NotifierSettingsView::GetPreferredSize() const {
 647   gfx::Size preferred_size;
 648   gfx::Size title_size = title_label_->GetPreferredSize();
 649   gfx::Size content_size = scroller_->contents()->GetPreferredSize();
 650   return gfx::Size(std::max(title_size.width(), content_size.width()),
 651                    title_size.height() + content_size.height());
 652 }
 653
 654 bool NotifierSettingsView::OnKeyPressed(const ui::KeyEvent& event) {
 655   if (event.key_code() == ui::VKEY_ESCAPE) {
 656     GetWidget()->Close();
 657     return true;
 658   }
 659
 660   return scroller_->OnKeyPressed(event);
 661 }
 662
 663 bool NotifierSettingsView::OnMouseWheel(const ui::MouseWheelEvent& event) {
 664   return scroller_->OnMouseWheel(event);
 665 }
 666
 667 void NotifierSettingsView::ButtonPressed(views::Button* sender,
 668                                          const ui::Event& event) {
 669   if (sender == title_arrow_) {
 670     MessageCenterView* center_view = static_cast<MessageCenterView*>(parent());
 671     center_view->SetSettingsVisible(!center_view->settings_visible());
 672     return;
 673   }
 674
 675   std::set<NotifierButton*>::iterator iter =
 676       buttons_.find(static_cast<NotifierButton*>(sender));
 677
 678   if (iter == buttons_.end())
 679     return;
 680
 681   (*iter)->SetChecked(!(*iter)->checked());
 682   if (provider_)
 683     provider_->SetNotifierEnabled((*iter)->notifier(), (*iter)->checked());
 684 }
 685
 686 void NotifierSettingsView::OnMenuButtonClicked(views::View* source,
 687                                                const gfx::Point& point) {
 688   notifier_group_menu_model_.reset(new NotifierGroupMenuModel(provider_));
 689   notifier_group_menu_runner_.reset(new views::MenuRunner(
 690       notifier_group_menu_model_.get(), views::MenuRunner::CONTEXT_MENU));
 691   gfx::Rect menu_anchor = source->GetBoundsInScreen();
 692   menu_anchor.Inset(
 693       gfx::Insets(0, kMenuWhitespaceOffset, 0, kMenuWhitespaceOffset));
 694   if (views::MenuRunner::MENU_DELETED ==
 695       notifier_group_menu_runner_->RunMenuAt(GetWidget(),
 696                                              notifier_group_selector_,
 697                                              menu_anchor,
 698                                              views::MENU_ANCHOR_BUBBLE_ABOVE,
 699                                              ui::MENU_SOURCE_MOUSE))
 700     return;
 701   MessageCenterView* center_view = static_cast<MessageCenterView*>(parent());
 702   center_view->OnSettingsChanged();
 703 }
 704
 705 }  // namespace message_center