ui/views/controls/menu/menu_delegate.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 "ui/views/controls/menu/menu_delegate.h"
   6
   7 #include "ui/events/event.h"
   8 #include "ui/views/controls/menu/menu_config.h"
   9
  10 namespace views {
  11
  12 MenuDelegate::~MenuDelegate() {}
  13
  14 bool MenuDelegate::IsItemChecked(int id) const {
  15   return false;
  16 }
  17
  18 base::string16 MenuDelegate::GetLabel(int id) const {
  19   return base::string16();
  20 }
  21
  22 const gfx::FontList* MenuDelegate::GetLabelFontList(int id) const {
  23   return NULL;
  24 }
  25
  26 bool MenuDelegate::GetShouldUseDisabledEmphasizedForegroundColor(
  27     int command_id) const {
  28   return false;
  29 }
  30
  31 bool MenuDelegate::GetBackgroundColor(int command_id,
  32                                       bool is_hovered,
  33                                       SkColor* override_color) const {
  34   return false;
  35 }
  36
  37 bool MenuDelegate::GetForegroundColor(int command_id,
  38                                       bool is_hovered,
  39                                       SkColor* override_color) const {
  40   return false;
  41 }
  42
  43 base::string16 MenuDelegate::GetTooltipText(int id,
  44                                       const gfx::Point& screen_loc) const {
  45   return base::string16();
  46 }
  47
  48 bool MenuDelegate::GetAccelerator(int id, ui::Accelerator* accelerator) const {
  49   return false;
  50 }
  51
  52 bool MenuDelegate::ShowContextMenu(MenuItemView* source,
  53                                    int id,
  54                                    const gfx::Point& p,
  55                                    ui::MenuSourceType source_type) {
  56   return false;
  57 }
  58
  59 bool MenuDelegate::SupportsCommand(int id) const {
  60   return true;
  61 }
  62
  63 bool MenuDelegate::IsCommandEnabled(int id) const {
  64   return true;
  65 }
  66
  67 bool MenuDelegate::GetContextualLabel(int id, base::string16* out) const {
  68   return false;
  69 }
  70
  71 bool MenuDelegate::ShouldCloseAllMenusOnExecute(int id) {
  72   return true;
  73 }
  74
  75 void MenuDelegate::ExecuteCommand(int id, int mouse_event_flags) {
  76   ExecuteCommand(id);
  77 }
  78
  79 bool MenuDelegate::ShouldExecuteCommandWithoutClosingMenu(int id,
  80                                                           const ui::Event& e) {
  81   return false;
  82 }
  83
  84 bool MenuDelegate::IsTriggerableEvent(MenuItemView* source,
  85                                       const ui::Event& e) {
  86   return e.type() == ui::ET_GESTURE_TAP ||
  87          e.type() == ui::ET_GESTURE_TAP_DOWN ||
  88          (e.IsMouseEvent() && (e.flags() &
  89               (ui::EF_LEFT_MOUSE_BUTTON | ui::EF_RIGHT_MOUSE_BUTTON)));
  90 }
  91
  92 bool MenuDelegate::CanDrop(MenuItemView* menu, const OSExchangeData& data) {
  93   return false;
  94 }
  95
  96 bool MenuDelegate::GetDropFormats(
  97     MenuItemView* menu,
  98     int* formats,
  99     std::set<OSExchangeData::CustomFormat>* custom_formats) {
 100   return false;
 101 }
 102
 103 bool MenuDelegate::AreDropTypesRequired(MenuItemView* menu) {
 104   return false;
 105 }
 106
 107 int MenuDelegate::GetDropOperation(MenuItemView* item,
 108                                    const ui::DropTargetEvent& event,
 109                                    DropPosition* position) {
 110   NOTREACHED() << "If you override CanDrop, you need to override this too";
 111   return ui::DragDropTypes::DRAG_NONE;
 112 }
 113
 114 int MenuDelegate::OnPerformDrop(MenuItemView* menu,
 115                                 DropPosition position,
 116                                 const ui::DropTargetEvent& event) {
 117   NOTREACHED() << "If you override CanDrop, you need to override this too";
 118   return ui::DragDropTypes::DRAG_NONE;
 119 }
 120
 121 bool MenuDelegate::CanDrag(MenuItemView* menu) {
 122   return false;
 123 }
 124
 125 void MenuDelegate::WriteDragData(MenuItemView* sender, OSExchangeData* data) {
 126   NOTREACHED() << "If you override CanDrag, you must override this too.";
 127 }
 128
 129 int MenuDelegate::GetDragOperations(MenuItemView* sender) {
 130   NOTREACHED() << "If you override CanDrag, you must override this too.";
 131   return 0;
 132 }
 133
 134 MenuItemView* MenuDelegate::GetSiblingMenu(MenuItemView* menu,
 135                                            const gfx::Point& screen_point,
 136                                            MenuAnchorPosition* anchor,
 137                                            bool* has_mnemonics,
 138                                            MenuButton** button) {
 139   return NULL;
 140 }
 141
 142 int MenuDelegate::GetMaxWidthForMenu(MenuItemView* menu) {
 143   // NOTE: this needs to be large enough to accommodate the wrench menu with
 144   // big fonts.
 145   return 800;
 146 }
 147
 148 void MenuDelegate::WillShowMenu(MenuItemView* menu) {
 149 }
 150
 151 void MenuDelegate::WillHideMenu(MenuItemView* menu) {
 152 }
 153
 154 void MenuDelegate::GetHorizontalIconMargins(int command_id,
 155                                             int icon_size,
 156                                             int* left_margin,
 157                                             int* right_margin) const {
 158   *left_margin = 0;
 159   *right_margin = 0;
 160 }
 161
 162 bool MenuDelegate::ShouldReserveSpaceForSubmenuIndicator() const {
 163   return true;
 164 }
 165
 166 }  // namespace views