test/Tizen.NUI.Samples/Tizen.NUI.Samples/Samples/CollectionViewDemo/Group/CollectionViewLinearGroupSample.cs

   1 using System;
   2 using System.ComponentModel;
   3 using System.Collections.Generic;
   4 using System.Collections.ObjectModel;
   5 using Tizen.NUI.BaseComponents;
   6 using Tizen.NUI.Components;
   7 using Tizen.NUI.Binding;
   8
   9 namespace Tizen.NUI.Samples
  10 {
  11     public class CollectionViewLinearGroupSample : IExample
  12     {
  13         CollectionView colView;
  14         string selectedItem;
  15         ItemSelectionMode selMode;
  16         ObservableCollection<Album> albumSource;
  17         Album insertDeleteGroup = new Album(999, "Insert / Delete Groups", new DateTime(1999, 12, 31));
  18         Gallery insertMenu = new Gallery(999, "Insert item to first of 3rd Group");
  19         Gallery deleteMenu = new Gallery(999, "Delete first item in 3rd Group");
  20         Album moveGroup = new Album(999, "move Groups", new DateTime(1999, 12, 31));
  21         Gallery moveMenu = new Gallery(999, "Move last item to first in 3rd group");
  22
  23         public void Activate()
  24         {
  25             Window window = NUIApplication.GetDefaultWindow();
  26
  27             albumSource = new AlbumViewModel();
  28             // Add test menu options.
  29             moveGroup.Add(moveMenu);
  30             albumSource.Insert(0, moveGroup);
  31             insertDeleteGroup.Add(insertMenu);
  32             insertDeleteGroup.Add(deleteMenu);
  33             albumSource.Insert(0, insertDeleteGroup);
  34
  35             selMode = ItemSelectionMode.SingleSelection;
  36             DefaultTitleItem myTitle = new DefaultTitleItem();
  37             //To Bind the Count property changes, need to create custom property for count.
  38             myTitle.Text = "Linear Sample Group["+ albumSource.Count+"]";
  39             //Set Width Specification as MatchParent to fit the Item width with parent View.
  40             myTitle.WidthSpecification = LayoutParamPolicies.MatchParent;
  41
  42             colView = new CollectionView()
  43             {
  44                 ItemsSource = albumSource,
  45                 ItemsLayouter = new LinearLayouter(),
  46                 ItemTemplate = new DataTemplate(() =>
  47                 {
  48                     DefaultLinearItem item = new DefaultLinearItem();
  49                     //Set Width Specification as MatchParent to fit the Item width with parent View.
  50                     item.WidthSpecification = LayoutParamPolicies.MatchParent;
  51                     //Decorate Label
  52                     item.Label.SetBinding(TextLabel.TextProperty, "ViewLabel");
  53                     item.Label.HorizontalAlignment = HorizontalAlignment.Begin;
  54                     //Decorate Icon
  55                     item.Icon.SetBinding(ImageView.ResourceUrlProperty, "ImageUrl");
  56                     item.Icon.WidthSpecification = 80;
  57                     item.Icon.HeightSpecification = 80;
  58                     //Decorate Extra RadioButton.
  59                     //[NOTE] This is sample of RadioButton usage in CollectionView.
  60                     // RadioButton change their selection by IsSelectedProperty bindings with
  61                     // SelectionChanged event with SingleSelection ItemSelectionMode of CollectionView.
  62                     // be aware of there are no RadioButtonGroup.
  63                     item.Extra = new RadioButton();
  64                     //FIXME : SetBinding in RadioButton crashed as Sensitive Property is disposed.
  65                     //item.Extra.SetBinding(RadioButton.IsSelectedProperty, "Selected");
  66                     item.Extra.WidthSpecification = 80;
  67                     item.Extra.HeightSpecification = 80;
  68
  69                     return item;
  70                 }),
  71                 GroupHeaderTemplate = new DataTemplate(() =>
  72                 {
  73                     DefaultTitleItem group = new DefaultTitleItem();
  74                     //Set Width Specification as MatchParent to fit the Item width with parent View.
  75                     group.WidthSpecification = LayoutParamPolicies.MatchParent;
  76
  77                     group.Label.SetBinding(TextLabel.TextProperty, "Date");
  78                     group.Label.HorizontalAlignment = HorizontalAlignment.Begin;
  79
  80                     return group;
  81                 }),
  82                 Header = myTitle,
  83                 IsGrouped = true,
  84                 ScrollingDirection = ScrollableBase.Direction.Vertical,
  85                 WidthSpecification = LayoutParamPolicies.MatchParent,
  86                 HeightSpecification = LayoutParamPolicies.MatchParent,
  87                                 SelectionMode = selMode
  88             };
  89             colView.SelectionChanged += SelectionEvt;
  90
  91             window.Add(colView);
  92
  93         }
  94
  95         public void SelectionEvt(object sender, SelectionChangedEventArgs ev)
  96         {
  97             //Tizen.Log.Debug("NUI", "LSH :: SelectionEvt called");
  98
  99             //SingleSelection Only have 1 or nil object in the list.
 100             foreach (object item in ev.PreviousSelection)
 101             {
 102                 if (item == null) break;
 103                 if (item is Gallery unselItem)
 104                 {
 105                     unselItem.Selected = false;
 106                     selectedItem = null;
 107                     //Tizen.Log.Debug("NUI", "LSH :: Unselected: {0}", unselItem.ViewLabel);
 108                 }
 109                 else if (item is Album selAlbum)
 110                 {
 111                     selectedItem = selAlbum.Title;
 112                     selAlbum.Selected = false;
 113                     if (selAlbum == insertDeleteGroup)
 114                     {
 115                         albumSource.RemoveAt(2);
 116                     }
 117                 }
 118
 119             }
 120             foreach (object item in ev.CurrentSelection)
 121             {
 122                 if (item == null) break;
 123                 if (item is Gallery selItem)
 124                 {
 125                     selItem.Selected = true;
 126                     selectedItem = selItem.Name;
 127                     //Tizen.Log.Debug("NUI", "LSH :: Selected: {0}", selItem.ViewLabel);
 128
 129                     // Check test menu options.
 130                     if (selItem == insertMenu)
 131                     {
 132                         // Insert new item to index 3.
 133                         Random rand = new Random();
 134                         int idx = rand.Next(1000);
 135                         albumSource[2].Insert(0, new Gallery(idx, "Inserted Item"));
 136                     }
 137                     else if (selItem == deleteMenu)
 138                     {
 139                         // Remove item in index 3.
 140                         albumSource[2].RemoveAt(0);
 141                     }
 142                     else if (selItem == moveMenu)
 143                     {
 144                         // Move last indexed item to index 3.
 145                         albumSource[2].Move(albumSource[2].Count - 1, 0);
 146                     }
 147                 }
 148                 else if (item is Album selAlbum)
 149                 {
 150                     selectedItem = selAlbum.Title;
 151                     selAlbum.Selected = true;
 152                     if (selAlbum == insertDeleteGroup)
 153                     {
 154                         Random rand = new Random();
 155                         int groupIdx = rand.Next(1000);
 156                         Album insertAlbum = new Album(groupIdx, "Inserted group", new DateTime(1999, 12, 31));
 157                         int idx = rand.Next(1000);
 158                         insertAlbum.Add(new Gallery(idx, "Inserted Item 1"));
 159                         idx = rand.Next(1000);
 160                         insertAlbum.Add(new Gallery(idx, "Inserted Item 2"));
 161                         idx = rand.Next(1000);
 162                         insertAlbum.Add(new Gallery(idx, "Inserted Item 3"));
 163                         albumSource.Insert(2, insertAlbum);
 164                     }
 165                     else if (selAlbum == moveGroup)
 166                     {
 167                         albumSource.Move(albumSource.Count - 1, 2);
 168
 169                     }
 170                 }
 171             }
 172             if (colView.Header != null && colView.Header is DefaultTitleItem)
 173             {
 174                 DefaultTitleItem title = (DefaultTitleItem)colView.Header;
 175                 title.Text = "Linear Sample Count[" + albumSource.Count + (selectedItem != null ? "] Selected [" + selectedItem + "]" : "]");
 176             }
 177         }
 178
 179         public void Deactivate()
 180         {
 181             if (colView != null)
 182             {
 183                 colView.Dispose();
 184             }
 185         }
 186     }
 187 }