src/chrome/browser/ui/views/website_settings/permission_selector_view.cc

   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 "chrome/browser/ui/views/website_settings/permission_selector_view.h"
   6
   7 #include "base/strings/utf_string_conversions.h"
   8 #include "chrome/browser/ui/website_settings/website_settings_ui.h"
   9 #include "grit/generated_resources.h"
  10 #include "ui/base/accessibility/accessible_view_state.h"
  11 #include "ui/base/l10n/l10n_util.h"
  12 #include "ui/base/models/simple_menu_model.h"
  13 #include "ui/gfx/image/image.h"
  14 #include "ui/views/controls/button/menu_button.h"
  15 #include "ui/views/controls/image_view.h"
  16 #include "ui/views/controls/label.h"
  17 #include "ui/views/controls/menu/menu_runner.h"
  18 #include "ui/views/layout/grid_layout.h"
  19 #include "ui/views/view.h"
  20 #include "ui/views/widget/widget.h"
  21
  22 namespace {
  23
  24 // Left icon margin.
  25 const int kPermissionIconMarginLeft = 6;
  26 // The width of the column that contains the permissions icons.
  27 const int kPermissionIconColumnWidth = 20;
  28
  29 ContentSetting CommandIdToContentSetting(int command_id) {
  30   switch (command_id) {
  31     case PermissionMenuModel::COMMAND_SET_TO_DEFAULT:
  32       return CONTENT_SETTING_DEFAULT;
  33     case PermissionMenuModel::COMMAND_SET_TO_ALLOW:
  34       return CONTENT_SETTING_ALLOW;
  35     case PermissionMenuModel::COMMAND_SET_TO_BLOCK:
  36       return CONTENT_SETTING_BLOCK;
  37     default:
  38       NOTREACHED();
  39       return CONTENT_SETTING_DEFAULT;
  40   }
  41 }
  42
  43 }  // namespace
  44
  45 namespace internal {
  46
  47 // The |PermissionMenuButton| provides a menu for selecting a setting a
  48 // permissions type.
  49 class PermissionMenuButton : public views::MenuButton,
  50                              public views::MenuButtonListener {
  51  public:
  52   // Creates a new |PermissionMenuButton| with the passed |text|. The ownership
  53   // of the |model| remains with the caller and is not transfered to the
  54   // |PermissionMenuButton|. If the |show_menu_marker| flag is true, then a
  55   // small icon is be displayed next to the button |text|, indicating that the
  56   // button opens a drop down menu.
  57   PermissionMenuButton(const string16& text,
  58                        PermissionMenuModel* model,
  59                        bool show_menu_marker);
  60   virtual ~PermissionMenuButton();
  61
  62   // Overridden from views::MenuButton.
  63   virtual gfx::Size GetPreferredSize() OVERRIDE;
  64
  65   // Overridden from views::TextButton.
  66   virtual void SetText(const string16& text) OVERRIDE;
  67
  68   // Overridden from views::View.
  69   virtual void GetAccessibleState(ui::AccessibleViewState* state) OVERRIDE;
  70
  71  private:
  72   // Overridden from views::MenuButtonListener.
  73   virtual void OnMenuButtonClicked(View* source,
  74                                    const gfx::Point& point) OVERRIDE;
  75
  76   PermissionMenuModel* menu_model_;  // Owned by |PermissionSelectorView|.
  77   scoped_ptr<views::MenuRunner> menu_runner_;
  78
  79   DISALLOW_COPY_AND_ASSIGN(PermissionMenuButton);
  80 };
  81
  82 ///////////////////////////////////////////////////////////////////////////////
  83 // PermissionMenuButton
  84 ///////////////////////////////////////////////////////////////////////////////
  85
  86 PermissionMenuButton::PermissionMenuButton(const string16& text,
  87                                            PermissionMenuModel* model,
  88                                            bool show_menu_marker)
  89     : MenuButton(NULL, text, this, show_menu_marker),
  90       menu_model_(model) {
  91   SetEnabledColor(GetNativeTheme()->GetSystemColor(
  92       ui::NativeTheme::kColorId_LabelEnabledColor));
  93   SetHoverColor(GetNativeTheme()->GetSystemColor(
  94       ui::NativeTheme::kColorId_LabelEnabledColor));
  95   SetDisabledColor(GetNativeTheme()->GetSystemColor(
  96       ui::NativeTheme::kColorId_LabelDisabledColor));
  97 }
  98
  99 PermissionMenuButton::~PermissionMenuButton() {
 100 }
 101
 102 gfx::Size PermissionMenuButton::GetPreferredSize() {
 103   gfx::Insets insets = GetInsets();
 104   // Scale the button to the current text size.
 105   gfx::Size prefsize(text_size_.width() + insets.width(),
 106                      text_size_.height() + insets.height());
 107   if (max_width_ > 0)
 108     prefsize.set_width(std::min(max_width_, prefsize.width()));
 109   if (show_menu_marker()) {
 110     prefsize.Enlarge(menu_marker()->width() +
 111                          views::MenuButton::kMenuMarkerPaddingLeft +
 112                          views::MenuButton::kMenuMarkerPaddingRight,
 113                      0);
 114   }
 115   return prefsize;
 116 }
 117
 118 void PermissionMenuButton::SetText(const string16& text) {
 119   MenuButton::SetText(text);
 120   SizeToPreferredSize();
 121 }
 122
 123 void PermissionMenuButton::GetAccessibleState(ui::AccessibleViewState* state) {
 124   MenuButton::GetAccessibleState(state);
 125   state->value = text();
 126 }
 127
 128 void PermissionMenuButton::OnMenuButtonClicked(View* source,
 129                                                const gfx::Point& point) {
 130   menu_runner_.reset(new views::MenuRunner(menu_model_));
 131
 132   gfx::Point p(point);
 133   p.Offset(-source->width(), 0);
 134   if (menu_runner_->RunMenuAt(
 135           source->GetWidget()->GetTopLevelWidget(),
 136           this,
 137           gfx::Rect(p, gfx::Size()),
 138           views::MenuItemView::TOPLEFT,
 139           ui::MENU_SOURCE_NONE,
 140           views::MenuRunner::HAS_MNEMONICS) == views::MenuRunner::MENU_DELETED)
 141     return;
 142 }
 143
 144 }  // namespace internal
 145
 146 ///////////////////////////////////////////////////////////////////////////////
 147 // PermissionSelectorView
 148 ///////////////////////////////////////////////////////////////////////////////
 149
 150 PermissionSelectorView::PermissionSelectorView(
 151     const GURL& url,
 152     ContentSettingsType type,
 153     ContentSetting default_setting,
 154     ContentSetting current_setting,
 155     content_settings::SettingSource source)
 156     : icon_(NULL),
 157       menu_button_(NULL),
 158       type_(type),
 159       default_setting_(default_setting),
 160       current_setting_(current_setting) {
 161   views::GridLayout* layout = new views::GridLayout(this);
 162   SetLayoutManager(layout);
 163   const int column_set_id = 0;
 164   views::ColumnSet* column_set = layout->AddColumnSet(column_set_id);
 165   column_set->AddColumn(views::GridLayout::FILL,
 166                         views::GridLayout::FILL,
 167                         1,
 168                         views::GridLayout::FIXED,
 169                         kPermissionIconColumnWidth,
 170                         0);
 171   column_set->AddPaddingColumn(0, kPermissionIconMarginLeft);
 172   column_set->AddColumn(views::GridLayout::FILL,
 173                         views::GridLayout::FILL,
 174                         1,
 175                         views::GridLayout::USE_PREF,
 176                         0,
 177                         0);
 178   column_set->AddColumn(views::GridLayout::FILL,
 179                         views::GridLayout::FILL,
 180                         1,
 181                         views::GridLayout::USE_PREF,
 182                         0,
 183                         0);
 184
 185   layout->StartRow(1, column_set_id);
 186   // Create the permission icon.
 187   icon_ = new views::ImageView();
 188   ContentSetting setting = current_setting;
 189   if (setting == CONTENT_SETTING_DEFAULT)
 190     setting = default_setting;
 191   const gfx::Image& image = WebsiteSettingsUI::GetPermissionIcon(type, setting);
 192   icon_->SetImage(image.ToImageSkia());
 193   layout->AddView(icon_,
 194                   1,
 195                   1,
 196                   views::GridLayout::CENTER,
 197                   views::GridLayout::CENTER);
 198   // Create the label that displays the permission type.
 199   views::Label* label = new views::Label(
 200       l10n_util::GetStringFUTF16(
 201           IDS_WEBSITE_SETTINGS_PERMISSION_TYPE,
 202           WebsiteSettingsUI::PermissionTypeToUIString(type)));
 203   layout->AddView(label,
 204                   1,
 205                   1,
 206                   views::GridLayout::LEADING,
 207                   views::GridLayout::CENTER);
 208   // Create the permission menu button.
 209   menu_button_model_.reset(new PermissionMenuModel(
 210       this, url, type, default_setting, current_setting));
 211   bool button_enabled = source == content_settings::SETTING_SOURCE_USER;
 212   menu_button_ = new internal::PermissionMenuButton(
 213       WebsiteSettingsUI::PermissionActionToUIString(current_setting,
 214                                                     default_setting,
 215                                                     source),
 216       menu_button_model_.get(),
 217       button_enabled);
 218   menu_button_->SetEnabled(button_enabled);
 219   menu_button_->set_focusable(button_enabled);
 220   menu_button_->SetAccessibleName(
 221       WebsiteSettingsUI::PermissionTypeToUIString(type));
 222   layout->AddView(menu_button_);
 223 }
 224
 225 void PermissionSelectorView::AddObserver(
 226     PermissionSelectorViewObserver* observer) {
 227   observer_list_.AddObserver(observer);
 228 }
 229
 230 void PermissionSelectorView::ChildPreferredSizeChanged(View* child) {
 231   SizeToPreferredSize();
 232   // FIXME: The parent is only a plain |View| that is used as a
 233   // container/box/panel. The SizeToPreferredSize method of the parent is
 234   // called here directly in order not to implement a custom |View| class with
 235   // its own implementation of the ChildPreferredSizeChanged method.
 236   parent()->SizeToPreferredSize();
 237 }
 238
 239 PermissionSelectorView::~PermissionSelectorView() {
 240 }
 241
 242 void PermissionSelectorView::ExecuteCommand(int command_id) {
 243   current_setting_ = CommandIdToContentSetting(command_id);
 244
 245   // Change the permission icon to reflect the selected setting.
 246   ContentSetting effective_setting = current_setting_;
 247   if (effective_setting == CONTENT_SETTING_DEFAULT)
 248     effective_setting = default_setting_;
 249   const gfx::Image& image = WebsiteSettingsUI::GetPermissionIcon(
 250       type_, effective_setting);
 251   icon_->SetImage(image.ToImageSkia());
 252
 253   // Update the menu button text to reflect the new setting.
 254   menu_button_->SetText(WebsiteSettingsUI::PermissionActionToUIString(
 255       current_setting_,
 256       default_setting_,
 257       content_settings::SETTING_SOURCE_USER));
 258
 259   FOR_EACH_OBSERVER(PermissionSelectorViewObserver,
 260                     observer_list_,
 261                     OnPermissionChanged(this));
 262 }
 263
 264 bool PermissionSelectorView::IsCommandIdChecked(int command_id) {
 265   return current_setting_ == CommandIdToContentSetting(command_id);
 266 }