chrome/browser/ui/ash/launcher/launcher_application_menu_item_model.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/ash/launcher/launcher_application_menu_item_model.h"
   6
   7 #include "base/metrics/histogram_macros.h"
   8 #include "chrome/browser/ui/ash/launcher/chrome_launcher_app_menu_item.h"
   9
  10 namespace {
  11
  12 const char kNumItemsEnabledHistogramName[] =
  13     "Ash.Shelf.Menu.NumItemsEnabledUponSelection";
  14
  15 const char kSelectedMenuItemIndexHistogramName[] =
  16     "Ash.Shelf.Menu.SelectedMenuItemIndex";
  17
  18 }  // namespace
  19
  20 LauncherApplicationMenuItemModel::LauncherApplicationMenuItemModel(
  21     ChromeLauncherAppMenuItems item_list)
  22     : ash::ShelfMenuModel(this),
  23       launcher_items_(item_list.Pass()) {
  24   Build();
  25 }
  26
  27 LauncherApplicationMenuItemModel::~LauncherApplicationMenuItemModel() {
  28 }
  29
  30 bool LauncherApplicationMenuItemModel::IsCommandActive(int command_id) const {
  31   DCHECK(command_id >= 0);
  32   DCHECK(static_cast<size_t>(command_id) < launcher_items_.size());
  33   return launcher_items_[command_id]->IsActive();
  34 }
  35
  36 bool LauncherApplicationMenuItemModel::IsCommandIdChecked(
  37     int command_id) const {
  38   return false;
  39 }
  40
  41 bool LauncherApplicationMenuItemModel::IsCommandIdEnabled(
  42     int command_id) const {
  43   DCHECK(command_id < static_cast<int>(launcher_items_.size()));
  44   return launcher_items_[command_id]->IsEnabled();
  45 }
  46
  47 bool LauncherApplicationMenuItemModel::GetAcceleratorForCommandId(
  48     int command_id,
  49     ui::Accelerator* accelerator) {
  50   return false;
  51 }
  52
  53 void LauncherApplicationMenuItemModel::ExecuteCommand(int command_id,
  54                                                       int event_flags) {
  55   DCHECK(command_id < static_cast<int>(launcher_items_.size()));
  56   launcher_items_[command_id]->Execute(event_flags);
  57   RecordMenuItemSelectedMetrics(command_id, GetNumMenuItemsEnabled());
  58 }
  59
  60 void LauncherApplicationMenuItemModel::Build() {
  61   if (launcher_items_.empty())
  62     return;
  63
  64   AddSeparator(ui::SPACING_SEPARATOR);
  65   for (size_t i = 0; i < launcher_items_.size(); i++) {
  66     ChromeLauncherAppMenuItem* item = launcher_items_[i];
  67
  68     // Check for a separator requirement in front of this item.
  69     if (item->HasLeadingSeparator())
  70       AddSeparator(ui::SPACING_SEPARATOR);
  71
  72     // The first item is the context menu, the others are the running apps.
  73     AddItem(i, item->title());
  74
  75     if (!item->icon().IsEmpty())
  76       SetIcon(GetIndexOfCommandId(i), item->icon());
  77   }
  78   AddSeparator(ui::SPACING_SEPARATOR);
  79 }
  80
  81 int LauncherApplicationMenuItemModel::GetNumMenuItemsEnabled() const {
  82   int num_menu_items_enabled = 0;
  83   for (const ChromeLauncherAppMenuItem* menu_item : launcher_items_) {
  84     if (menu_item->IsEnabled())
  85       ++num_menu_items_enabled;
  86   }
  87   return num_menu_items_enabled;
  88 }
  89
  90 void LauncherApplicationMenuItemModel::RecordMenuItemSelectedMetrics(
  91     int command_id,
  92     int num_menu_items_enabled) {
  93   UMA_HISTOGRAM_COUNTS_100(kSelectedMenuItemIndexHistogramName, command_id);
  94   UMA_HISTOGRAM_COUNTS_100(kNumItemsEnabledHistogramName,
  95                            num_menu_items_enabled);
  96 }