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> groupSource;
  17
  18         public void Activate()
  19         {
  20             Window window = NUIApplication.GetDefaultWindow();
  21
  22             groupSource = new AlbumViewModel();
  23             selMode = ItemSelectionMode.SingleSelection;
  24             DefaultTitleItem myTitle = new DefaultTitleItem();
  25             //To Bind the Count property changes, need to create custom property for count.
  26             myTitle.Text = "Linear Sample Group["+ groupSource.Count+"]";
  27             //Set Width Specification as MatchParent to fit the Item width with parent View.
  28             myTitle.WidthSpecification = LayoutParamPolicies.MatchParent;
  29
  30             colView = new CollectionView()
  31             {
  32                 ItemsSource = groupSource,
  33                 ItemsLayouter = new LinearLayouter(),
  34                 ItemTemplate = new DataTemplate(() =>
  35                 {
  36                     var rand = new Random();
  37                     RecyclerViewItem item = new RecyclerViewItem();
  38                     item.WidthSpecification = LayoutParamPolicies.MatchParent;
  39                     item.HeightSpecification = 100;
  40                     item.BackgroundColor = new Color((float)rand.NextDouble(), (float)rand.NextDouble(), (float)rand.NextDouble(), 1);
  41                     /*
  42                     DefaultLinearItem item = new DefaultLinearItem();
  43                     //Set Width Specification as MatchParent to fit the Item width with parent View.
  44                     item.WidthSpecification = LayoutParamPolicies.MatchParent;
  45                     //Decorate Label
  46                     item.Label.SetBinding(TextLabel.TextProperty, "ViewLabel");
  47                     item.Label.HorizontalAlignment = HorizontalAlignment.Begin;
  48                     //Decorate Icon
  49                     item.Icon.SetBinding(ImageView.ResourceUrlProperty, "ImageUrl");
  50                     item.Icon.WidthSpecification = 80;
  51                     item.Icon.HeightSpecification = 80;
  52                     //Decorate Extra RadioButton.
  53                     //[NOTE] This is sample of RadioButton usage in CollectionView.
  54                     // RadioButton change their selection by IsSelectedProperty bindings with
  55                     // SelectionChanged event with SingleSelection ItemSelectionMode of CollectionView.
  56                     // be aware of there are no RadioButtonGroup.
  57                     item.Extra = new RadioButton();
  58                     //FIXME : SetBinding in RadioButton crashed as Sensitive Property is disposed.
  59                     //item.Extra.SetBinding(RadioButton.IsSelectedProperty, "Selected");
  60                     item.Extra.WidthSpecification = 80;
  61                     item.Extra.HeightSpecification = 80;
  62                     */
  63                     return item;
  64                 }),
  65                 GroupHeaderTemplate = new DataTemplate(() =>
  66                 {
  67                     var rand = new Random();
  68                     RecyclerViewItem item = new RecyclerViewItem();
  69                     item.WidthSpecification = LayoutParamPolicies.MatchParent;
  70                     item.HeightSpecification = 50;
  71                     item.BackgroundColor = new Color(0, 0, 0, 1);
  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 item;
  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                 Gallery unselItem = (Gallery)item;
 104
 105                 unselItem.Selected = false;
 106                 selectedItem = null;
 107                 //Tizen.Log.Debug("NUI", "LSH :: Unselected: {0}", unselItem.ViewLabel);
 108             }
 109             foreach (object item in ev.CurrentSelection)
 110             {
 111                 if (item == null) break;
 112                 Gallery selItem = (Gallery)item;
 113                 selItem.Selected = true;
 114                 selectedItem = selItem.Name;
 115                 //Tizen.Log.Debug("NUI", "LSH :: Selected: {0}", selItem.ViewLabel);
 116             }
 117             if (colView.Header != null && colView.Header is DefaultTitleItem)
 118             {
 119                 DefaultTitleItem title = (DefaultTitleItem)colView.Header;
 120                 title.Text = "Linear Sample Count[" + groupSource + (selectedItem != null ? "] Selected [" + selectedItem + "]" : "]");
 121             }
 122         }
 123         public void Deactivate()
 124         {
 125             if (colView != null)
 126             {
 127                 colView.Dispose();
 128             }
 129         }
 130     }
 131 }