chrome/browser/ui/views/frame/system_menu_model_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 "chrome/browser/ui/views/frame/system_menu_model_delegate.h"
   6
   7 #include "base/prefs/pref_service.h"
   8 #include "chrome/app/chrome_command_ids.h"
   9 #include "chrome/browser/command_updater.h"
  10 #include "chrome/browser/profiles/profile.h"
  11 #include "chrome/browser/sessions/tab_restore_service_factory.h"
  12 #include "chrome/browser/ui/browser_commands.h"
  13 #include "chrome/common/pref_names.h"
  14 #include "chrome/grit/generated_resources.h"
  15 #include "components/sessions/core/tab_restore_service.h"
  16 #include "ui/base/l10n/l10n_util.h"
  17
  18 SystemMenuModelDelegate::SystemMenuModelDelegate(
  19     ui::AcceleratorProvider* provider,
  20     Browser* browser)
  21     : provider_(provider),
  22       browser_(browser) {
  23 }
  24
  25 SystemMenuModelDelegate::~SystemMenuModelDelegate() {
  26 }
  27
  28 bool SystemMenuModelDelegate::IsCommandIdChecked(int command_id) const {
  29   switch (command_id) {
  30     case IDC_USE_SYSTEM_TITLE_BAR: {
  31       PrefService* prefs = browser_->profile()->GetPrefs();
  32       return !prefs->GetBoolean(prefs::kUseCustomChromeFrame);
  33     }
  34     default:
  35       return false;
  36   }
  37 }
  38
  39 bool SystemMenuModelDelegate::IsCommandIdEnabled(int command_id) const {
  40   if (!chrome::IsCommandEnabled(browser_, command_id))
  41     return false;
  42
  43   if (command_id != IDC_RESTORE_TAB)
  44     return true;
  45
  46   // chrome::IsCommandEnabled(IDC_RESTORE_TAB) returns true if TabRestoreService
  47   // hasn't been loaded yet. Return false if this is the case as we don't have
  48   // a good way to dynamically update the menu when TabRestoreService finishes
  49   // loading.
  50   // TODO(sky): add a way to update menu.
  51   sessions::TabRestoreService* trs =
  52       TabRestoreServiceFactory::GetForProfile(browser_->profile());
  53   if (!trs->IsLoaded()) {
  54     trs->LoadTabsFromLastSession();
  55     return false;
  56   }
  57   return true;
  58 }
  59
  60 bool SystemMenuModelDelegate::GetAcceleratorForCommandId(int command_id,
  61                                              ui::Accelerator* accelerator) {
  62   return provider_->GetAcceleratorForCommandId(command_id, accelerator);
  63 }
  64
  65 bool SystemMenuModelDelegate::IsItemForCommandIdDynamic(int command_id) const {
  66   return command_id == IDC_RESTORE_TAB;
  67 }
  68
  69 base::string16 SystemMenuModelDelegate::GetLabelForCommandId(
  70     int command_id) const {
  71   DCHECK_EQ(command_id, IDC_RESTORE_TAB);
  72
  73   int string_id = IDS_RESTORE_TAB;
  74   if (IsCommandIdEnabled(command_id)) {
  75     sessions::TabRestoreService* trs =
  76         TabRestoreServiceFactory::GetForProfile(browser_->profile());
  77     trs->LoadTabsFromLastSession();
  78     if (trs && !trs->entries().empty() &&
  79         trs->entries().front()->type == sessions::TabRestoreService::WINDOW)
  80       string_id = IDS_RESTORE_WINDOW;
  81   }
  82   return l10n_util::GetStringUTF16(string_id);
  83 }
  84
  85 void SystemMenuModelDelegate::ExecuteCommand(int command_id, int event_flags) {
  86   chrome::ExecuteCommand(browser_, command_id);
  87 }