ash/launcher/launcher_item_delegate_manager.cc

   1 // Copyright 2013 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 "ash/launcher/launcher_item_delegate_manager.h"
   6
   7 #include "ash/launcher/launcher_item_delegate.h"
   8 #include "ash/launcher/launcher_model.h"
   9 #include "ash/shell.h"
  10 #include "base/logging.h"
  11 #include "base/stl_util.h"
  12
  13 namespace ash {
  14
  15 LauncherItemDelegateManager::LauncherItemDelegateManager(
  16     ash::LauncherModel* model) : model_(model) {
  17   DCHECK(model_);
  18   model_->AddObserver(this);
  19 }
  20
  21 LauncherItemDelegateManager::~LauncherItemDelegateManager() {
  22   model_->RemoveObserver(this);
  23   STLDeleteContainerPairSecondPointers(id_to_item_delegate_map_.begin(),
  24                                        id_to_item_delegate_map_.end());
  25 }
  26
  27 void LauncherItemDelegateManager::SetLauncherItemDelegate(
  28     ash::LauncherID id,
  29     scoped_ptr<LauncherItemDelegate> item_delegate) {
  30   // If another LauncherItemDelegate is already registered for |id|, we assume
  31   // that this request is replacing LauncherItemDelegate for |id| with
  32   // |item_delegate|.
  33   RemoveLauncherItemDelegate(id);
  34   id_to_item_delegate_map_[id] = item_delegate.release();
  35 }
  36
  37 LauncherItemDelegate* LauncherItemDelegateManager::GetLauncherItemDelegate(
  38     ash::LauncherID id) {
  39   if (model_->ItemIndexByID(id) != -1) {
  40     // Each LauncherItem has to have a LauncherItemDelegate.
  41     DCHECK(id_to_item_delegate_map_.find(id) != id_to_item_delegate_map_.end());
  42     return id_to_item_delegate_map_[id];
  43   }
  44   return NULL;
  45 }
  46
  47 void LauncherItemDelegateManager::LauncherItemAdded(int index) {
  48 }
  49
  50 void LauncherItemDelegateManager::LauncherItemRemoved(int index,
  51                                                       ash::LauncherID id) {
  52   RemoveLauncherItemDelegate(id);
  53 }
  54
  55 void LauncherItemDelegateManager::LauncherItemMoved(int start_index,
  56                                                     int target_index) {
  57 }
  58
  59 void LauncherItemDelegateManager::LauncherItemChanged(
  60     int index,
  61     const LauncherItem& old_item) {
  62 }
  63
  64 void LauncherItemDelegateManager::LauncherStatusChanged() {
  65 }
  66
  67 void LauncherItemDelegateManager::RemoveLauncherItemDelegate(
  68     ash::LauncherID id) {
  69   if (id_to_item_delegate_map_.find(id) != id_to_item_delegate_map_.end()) {
  70     delete id_to_item_delegate_map_[id];
  71     id_to_item_delegate_map_.erase(id);
  72   }
  73 }
  74
  75 }  // namespace ash