1 /* Copyright (c) 2020 Samsung Electronics Co., Ltd.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at
7 * http://www.apache.org/licenses/LICENSE-2.0
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
17 using Tizen.NUI.BaseComponents;
18 using Tizen.NUI.Components;
19 using System.ComponentModel;
21 namespace Tizen.NUI.Wearable
24 /// [Draft] This class provides a list view styled by wearable ux.
25 /// List will lay out all items with Fish-Eye layout manager.
27 /// This may be public opened in tizen_6.0 after ACR done. Before ACR, need to be hidden as inhouse API.
28 [EditorBrowsable(EditorBrowsableState.Never)]
29 public class WearableList : RecyclerView
31 private RecycleItem FocusedItem = null;
34 /// Default constructor.
36 /// <param name="adapter">Recycle adapter of List.</param>
37 /// <since_tizen> 8 </since_tizen>
38 /// This may be public opened in tizen_6.0 after ACR done. Before ACR, need to be hidden as inhouse API
39 [EditorBrowsable(EditorBrowsableState.Never)]
40 public WearableList() : base(new RecycleAdapter(), new FishEyeLayoutManager())
42 ScrollingDirection = ScrollableBase.Direction.Vertical;
44 ScrollDragStarted += OnScrollDragStarted;
45 ScrollAnimationEnded += OnAnimationEnded;
47 ContentContainer.PositionUsesPivotPoint = true;
48 ContentContainer.ParentOrigin = Tizen.NUI.ParentOrigin.Center;
49 ContentContainer.PivotPoint = Tizen.NUI.PivotPoint.TopCenter;
50 NoticeAnimationEndBeforePosition = 50;
52 ScrollAvailableArea = new Vector2(0, ContentContainer.SizeHeight);
56 Scrollbar = new CircularScrollbar();
57 DecelerationThreshold = 60.0f;
58 DecelerationRate = 0.991f;
61 protected override void SetScrollbar()
63 if(LayoutManager != null)
65 Scrollbar.Initialize(ContentContainer.Size.Height, LayoutManager.StepSize, ContentContainer.CurrentPosition.Y, false);
69 public new RecycleAdapter Adapter
80 foreach (View child in Children)
82 child.PositionUsesPivotPoint = true;
83 child.ParentOrigin = Tizen.NUI.ParentOrigin.TopCenter;
86 ScrollAvailableArea = new Vector2( 0, ContentContainer.SizeHeight );
91 /// Set focus to item which has specific data index.
93 /// <param name="dataIndex">Data index of item.</param>
94 /// <param name="animated">If set true, scroll to item using animation.</param>
95 /// <since_tizen> 8 </since_tizen>
96 /// This may be public opened in tizen_6.0 after ACR done. Before ACR, need to be hidden as inhouse API
97 public void SetFocus(int dataIndex, bool animated)
99 foreach (RecycleItem item in Children)
101 if (item.DataIndex == dataIndex)
103 RecycleItem prevFocusedItem = FocusedItem;
104 prevFocusedItem?.OnFocusLost();
106 FocusedItem.OnFocusGained();
108 ScrollTo(item.DataIndex * LayoutManager.StepSize, animated);
113 private void OnAnimationEnded(object source, ScrollEventArgs args)
118 /// This helps developer who wants to know before scroll is reaching target position.
120 /// <param name="targetPosition">Index of item.</param>
121 /// <since_tizen> 8 </since_tizen>
122 /// This may be public opened in tizen_6.0 after ACR done. Before ACR, need to be hidden as inhouse API
123 protected override void OnPreReachedTargetPosition(float targetPosition)
125 int targetDataIndex = (int)Math.Round(Math.Abs(targetPosition) / LayoutManager.StepSize);
127 for (int i = 0; i < Children.Count; i++)
129 RecycleItem item = Children[i] as RecycleItem;
131 if (targetDataIndex == item.DataIndex)
134 item.OnFocusGained();
140 private void OnScrollDragStarted(object source, ScrollEventArgs args)
142 RecycleItem prevFocusedItem = FocusedItem;
143 prevFocusedItem?.OnFocusLost();