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