1 files changed, 72 insertions, 0 deletions
diff --git a/chromium/ash/shelf/shelf_item_delegate_manager.cc b/chromium/ash/shelf/shelf_item_delegate_manager.cc
new file mode 100644
index 00000000000..79124caac15
--- /dev/null
+++ b/chromium/ash/shelf/shelf_item_delegate_manager.cc
@@ -0,0 +1,72 @@
+// Copyright 2013 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "ash/shelf/shelf_item_delegate_manager.h"
+
+#include "ash/shelf/shelf_item_delegate.h"
+#include "ash/shelf/shelf_model.h"
+#include "ash/shell.h"
+#include "base/logging.h"
+#include "base/stl_util.h"
+
+namespace ash {
+
+ShelfItemDelegateManager::ShelfItemDelegateManager(ShelfModel* model)
+    : model_(model) {
+  DCHECK(model_);
+  model_->AddObserver(this);
+}
+
+ShelfItemDelegateManager::~ShelfItemDelegateManager() {
+  model_->RemoveObserver(this);
+  STLDeleteContainerPairSecondPointers(id_to_item_delegate_map_.begin(),
+                                       id_to_item_delegate_map_.end());
+}
+
+void ShelfItemDelegateManager::SetShelfItemDelegate(
+    LauncherID id,
+    scoped_ptr<ShelfItemDelegate> item_delegate) {
+  // If another ShelfItemDelegate is already registered for |id|, we assume
+  // that this request is replacing ShelfItemDelegate for |id| with
+  // |item_delegate|.
+  RemoveShelfItemDelegate(id);
+  id_to_item_delegate_map_[id] = item_delegate.release();
+}
+
+ShelfItemDelegate* ShelfItemDelegateManager::GetShelfItemDelegate(
+    LauncherID id) {
+  if (model_->ItemIndexByID(id) != -1) {
+    // Each LauncherItem has to have a ShelfItemDelegate.
+    DCHECK(id_to_item_delegate_map_.find(id) != id_to_item_delegate_map_.end());
+    return id_to_item_delegate_map_[id];
+  }
+  return NULL;
+}
+
+void ShelfItemDelegateManager::ShelfItemAdded(int index) {
+}
+
+void ShelfItemDelegateManager::ShelfItemRemoved(int index, LauncherID id) {
+  RemoveShelfItemDelegate(id);
+}
+
+void ShelfItemDelegateManager::ShelfItemMoved(int start_index,
+                                              int target_index) {
+}
+
+void ShelfItemDelegateManager::ShelfItemChanged(int index,
+                                                const LauncherItem& old_item) {
+}
+
+void ShelfItemDelegateManager::ShelfStatusChanged() {
+}
+
+void ShelfItemDelegateManager::RemoveShelfItemDelegate(LauncherID id) {
+  if (id_to_item_delegate_map_.find(id) != id_to_item_delegate_map_.end()) {
+    delete id_to_item_delegate_map_[id];
+    id_to_item_delegate_map_.erase(id);
+  }
+}
+
+}  // namespace ash