mash: Remove ShelfDelegate; move functions to ShelfModel.

ash/shelf/shelf_model.h

 // 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.
 
 #ifndef ASH_SHELF_SHELF_MODEL_H_
 #define ASH_SHELF_SHELF_MODEL_H_
 
 #include <map>
 #include <memory>
 
 #include "ash/ash_export.h"
+#include "ash/public/cpp/app_launch_id.h"
 #include "ash/public/cpp/shelf_item.h"
 #include "ash/public/interfaces/shelf.mojom.h"
 #include "base/macros.h"
 #include "base/observer_list.h"
 
 namespace ash {
 
 class ShelfItemDelegate;
 class ShelfModelObserver;
 
 // Model used for shelf items. Owns ShelfItemDelegates but does not create them.
 class ASH_EXPORT ShelfModel {
  public:
   ShelfModel();
   ~ShelfModel();
 
+  // Get the shelf ID from an application ID. Returns kInvalidShelfID if the
+  // app id is unknown, or has no associated ShelfID.
+  ShelfID GetShelfIDForAppID(const std::string& app_id);
+
+  // Get the shelf ID from an application ID and a launch ID.
+  // The launch ID can be passed to an app when launched in order to support
+  // multiple shelf items per app. This id is used together with the app_id to
+  // uniquely identify each shelf item that has the same app_id.
+  // For example, a single virtualization app might want to show different
+  // shelf icons for different remote apps. Returns kInvalidShelfID if the app
+  // id is unknown or has no associated ShelfID.
+  ShelfID GetShelfIDForAppIDAndLaunchID(const std::string& app_id,
+                                        const std::string& launch_id);
+
+  // Get the application ID for a given shelf ID. Returns an empty string for
+  // an unknown or invalid ShelfID.
+  const std::string& GetAppIDForShelfID(ShelfID id);
+
+  // Pins an app with |app_id| to shelf. A running instance will get pinned.
+  // In case there is no running instance a new shelf item is created and
+  // pinned.
+  void PinAppWithID(const std::string& app_id);
+
+  // Check if the app with |app_id_| is pinned to the shelf.
+  bool IsAppPinned(const std::string& app_id);
+
+  // Unpins app item with |app_id|.
+  void UnpinAppWithID(const std::string& app_id);
+
   // Cleans up the ShelfItemDelegates.
   void DestroyItemDelegates();
 
   // Adds a new item to the model. Returns the resulting index.
   int Add(const ShelfItem& item);
 
   // Adds the item. |index| is the requested insertion index, which may be
   // modified to meet type-based ordering. Returns the actual insertion index.
   int AddAt(int index, const ShelfItem& item);
 
@@ skipping 21 matching lines @@
   // applications yet.
   int FirstRunningAppIndex() const;
 
   // Returns the index of the first panel or the index where the first panel
   // would go if there are no panels.
   int FirstPanelIndex() const;
 
   // Returns the id assigned to the next item added.
   ShelfID next_id() const { return next_id_; }
 
-  // Returns a reserved id which will not be used by the |ShelfModel|.
-  ShelfID reserve_external_id() { return next_id_++; }
-
   // Returns an iterator into items() for the item with the specified id, or
   // items().end() if there is no item with the specified id.
   ShelfItems::const_iterator ItemByID(ShelfID id) const;
 
   const ShelfItems& items() const { return items_; }
   int item_count() const { return static_cast<int>(items_.size()); }
 
   // Set |item_delegate| for |id| and takes ownership.
   void SetShelfItemDelegate(ShelfID id,
                             std::unique_ptr<ShelfItemDelegate> item_delegate);
@@ skipping 18 matching lines @@
 
   std::map<ShelfID, std::unique_ptr<ShelfItemDelegate>>
       id_to_item_delegate_map_;
 
   DISALLOW_COPY_AND_ASSIGN(ShelfModel);
 };
 
 }  // namespace ash
 
 #endif  // ASH_SHELF_SHELF_MODEL_H_