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// 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::AddObserver(
ShelfItemDelegateManagerObserver* observer) {
observers_.AddObserver(observer);
}
void ShelfItemDelegateManager::RemoveObserver(
ShelfItemDelegateManagerObserver* observer) {
observers_.RemoveObserver(observer);
}
void ShelfItemDelegateManager::SetShelfItemDelegate(
ShelfID 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);
FOR_EACH_OBSERVER(ShelfItemDelegateManagerObserver,
observers_,
OnSetShelfItemDelegate(id, item_delegate.get()));
id_to_item_delegate_map_[id] = item_delegate.release();
}
ShelfItemDelegate* ShelfItemDelegateManager::GetShelfItemDelegate(ShelfID id) {
if (model_->ItemIndexByID(id) != -1) {
// Each ShelfItem 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, ShelfID id) {
RemoveShelfItemDelegate(id);
FOR_EACH_OBSERVER(ShelfItemDelegateManagerObserver,
observers_,
OnSetShelfItemDelegate(id, nullptr));
}
void ShelfItemDelegateManager::ShelfItemMoved(int start_index,
int target_index) {
}
void ShelfItemDelegateManager::ShelfItemChanged(int index,
const ShelfItem& old_item) {
}
void ShelfItemDelegateManager::ShelfStatusChanged() {
}
void ShelfItemDelegateManager::RemoveShelfItemDelegate(ShelfID 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
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