apps_search_results_model_bridge.h revision 3551c9c881056c480085172ff9840cab31610854 
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#ifndef UI_APP_LIST_COCOA_APPS_SEARCH_RESULTS_MODEL_BRIDGE_H_
6#define UI_APP_LIST_COCOA_APPS_SEARCH_RESULTS_MODEL_BRIDGE_H_
7
8#include "base/mac/scoped_nsobject.h"
9#include "base/memory/scoped_vector.h"
10#include "ui/base/models/list_model_observer.h"
11
12@class NSMenu;
13@class AppsSearchResultsController;
14
15namespace app_list {
16
17// Bridge observing the ListModel representing search results in the app list,
18// and updating the NSTableView where they are displayed.
19class AppsSearchResultsModelBridge : public ui::ListModelObserver {
20 public:
21  explicit AppsSearchResultsModelBridge(
22      AppsSearchResultsController* results_controller);
23  virtual ~AppsSearchResultsModelBridge();
24
25  // Returns the context menu for the item at |index| in the search results
26  // model. A menu will be generated if it hasn't been previously requested.
27  NSMenu* MenuForItem(size_t index);
28
29 private:
30  // Lightweight observer to react to icon updates on individual results.
31  class ItemObserver;
32
33  void UpdateItemObservers();
34  void ReloadDataForItems(size_t start, size_t count) const;
35
36  // Overridden from ui::ListModelObserver:
37  virtual void ListItemsAdded(size_t start, size_t count) OVERRIDE;
38  virtual void ListItemsRemoved(size_t start, size_t count) OVERRIDE;
39  virtual void ListItemMoved(size_t index, size_t target_index) OVERRIDE;
40  virtual void ListItemsChanged(size_t start, size_t count) OVERRIDE;
41
42  AppsSearchResultsController* parent_;  // Weak. Owns us.
43  ScopedVector<ItemObserver> item_observers_;
44
45  DISALLOW_COPY_AND_ASSIGN(AppsSearchResultsModelBridge);
46};
47
48}  // namespace app_list
49
50#endif  // UI_APP_LIST_COCOA_APPS_SEARCH_RESULTS_MODEL_BRIDGE_H_
51