ui/app_list/cocoa/apps_search_results_model_bridge.h

   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
  15 namespace app_list {
  16
  17 // Bridge observing the ListModel representing search results in the app list,
  18 // and updating the NSTableView where they are displayed.
  19 class 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_