1 #ifndef DALI_TOOLKIT_ITEM_FACTORY_H
2 #define DALI_TOOLKIT_ITEM_FACTORY_H
5 * Copyright (c) 2020 Samsung Electronics Co., Ltd.
7 * Licensed under the Apache License, Version 2.0 (the "License");
8 * you may not use this file except in compliance with the License.
9 * You may obtain a copy of the License at
11 * http://www.apache.org/licenses/LICENSE-2.0
13 * Unless required by applicable law or agreed to in writing, software
14 * distributed under the License is distributed on an "AS IS" BASIS,
15 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
16 * See the License for the specific language governing permissions and
17 * limitations under the License.
22 #include <dali/public-api/actors/actor.h>
25 #include <dali-toolkit/public-api/dali-toolkit-common.h>
32 * @addtogroup dali_toolkit_controls_item_view
37 * @brief ItemFactory is for providing actors to ItemView.
39 * Each actor is identified by a unique ID, and has a linear order from 0 to GetNumberOfItems()-1.
45 class Extension; ///< Forward declare future extension interface
48 * @brief Virtual destructor.
51 DALI_TOOLKIT_API virtual ~ItemFactory(){};
54 * @brief Queries the number of items available from the factory.
56 * The maximum available item has an ID of GetNumberOfItems() - 1.
58 * @return The number of items
60 virtual unsigned int GetNumberOfItems() = 0;
63 * @brief Creates an Actor to represent a visible item.
66 * @param[in] itemId The ID of the newly visible item
67 * @return An actor, or an uninitialized pointer if the ID is out of range
69 virtual Actor NewItem(unsigned int itemId) = 0;
72 * @brief Notifies the factory the actor representing the item is removed from ItemView.
75 * @param[in] itemId The ID of the released item
76 * @param[in] actor The actor that represents the released item
78 virtual void ItemReleased(unsigned int itemId, Actor actor){};
81 * @brief Retrieves the extension for this control.
84 * @return The extension if available, NULL otherwise
86 virtual Extension* GetExtension()
95 } // namespace Toolkit
99 #endif // DALI_TOOLKIT_ITEM_FACTORY_H