1 #ifndef __DALI_TOOLKIT_ITEM_FACTORY_H__
2 #define __DALI_TOOLKIT_ITEM_FACTORY_H__
5 * Copyright (c) 2018 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>
33 * @addtogroup dali_toolkit_controls_item_view
38 * @brief ItemFactory is for providing actors to ItemView.
40 * Each actor is identified by a unique ID, and has a linear order from 0 to GetNumberOfItems()-1.
47 class Extension; ///< Forward declare future extension interface
50 * @brief Virtual destructor.
53 DALI_TOOLKIT_API virtual ~ItemFactory() {};
56 * @brief Queries the number of items available from the factory.
58 * The maximum available item has an ID of GetNumberOfItems() - 1.
60 * @return The number of items
62 virtual unsigned int GetNumberOfItems() = 0;
65 * @brief Creates an Actor to represent a visible item.
68 * @param[in] itemId The ID of the newly visible item
69 * @return An actor, or an uninitialized pointer if the ID is out of range
71 virtual Actor NewItem(unsigned int itemId) = 0;
74 * @brief Notifies the factory the actor representing the item is removed from ItemView.
77 * @param[in] itemId The ID of the released item
78 * @param[in] actor The actor that represents the released item
80 virtual void ItemReleased(unsigned int itemId, Actor actor) {};
83 * @brief Retrieves the extension for this control.
86 * @return The extension if available, NULL otherwise
88 virtual Extension* GetExtension()
97 } // namespace Toolkit
101 #endif // __DALI_TOOLKIT_ITEM_FACTORY_H__