test/Tizen.NUI.Samples/Tizen.NUI.Samples/Samples/CollectionViewDemo/CollectionViewLinearSample.cs

   1 using System.Collections.Generic;
   2 using Tizen.NUI.BaseComponents;
   3 using Tizen.NUI.Components;
   4 using Tizen.NUI.Binding;
   5 using System.ComponentModel;
   6 using System;
   7
   8 namespace Tizen.NUI.Samples
   9 {
  10     public class CollectionViewLinearSample : IExample
  11     {
  12         CollectionView colView;
  13         int itemCount = 500;
  14         string selectedItem;
  15         ItemSelectionMode selMode;
  16
  17         public void Activate()
  18         {
  19             Window window = NUIApplication.GetDefaultWindow();
  20
  21             var myViewModelSource = new GalleryViewModel(itemCount);
  22             selMode = ItemSelectionMode.SingleSelection;
  23             DefaultTitleItem myTitle = new DefaultTitleItem();
  24             myTitle.Text = "Linear Sample Count["+itemCount+"]";
  25             //Set Width Specification as MatchParent to fit the Item width with parent View.
  26             myTitle.WidthSpecification = LayoutParamPolicies.MatchParent;
  27
  28             colView = new CollectionView()
  29             {
  30                 ItemsSource = myViewModelSource,
  31                 ItemsLayouter = new LinearLayouter(),
  32                 ItemTemplate = new DataTemplate(() =>
  33                 {
  34                     var rand = new Random();
  35                     RecyclerViewItem item = new RecyclerViewItem();
  36                     item.WidthSpecification = LayoutParamPolicies.MatchParent;
  37                     item.HeightSpecification = 100;
  38                     item.BackgroundColor = new Color((float)rand.NextDouble(), (float)rand.NextDouble(), (float)rand.NextDouble(), 1);
  39                     /*
  40                     DefaultLinearItem item = new DefaultLinearItem();
  41                     //Set Width Specification as MatchParent to fit the Item width with parent View.
  42                     item.WidthSpecification = LayoutParamPolicies.MatchParent;
  43                     //Decorate Label
  44                     item.Label.SetBinding(TextLabel.TextProperty, "ViewLabel");
  45                     item.Label.HorizontalAlignment = HorizontalAlignment.Begin;
  46                     //Decorate Icon
  47                     item.Icon.SetBinding(ImageView.ResourceUrlProperty, "ImageUrl");
  48                     item.Icon.WidthSpecification = 80;
  49                     item.Icon.HeightSpecification = 80;
  50                     //Decorate Extra RadioButton.
  51                     //[NOTE] This is sample of RadioButton usage in CollectionView.
  52                     // RadioButton change their selection by IsSelectedProperty bindings with
  53                     // SelectionChanged event with SingleSelection ItemSelectionMode of CollectionView.
  54                     // be aware of there are no RadioButtonGroup.
  55                     item.Extra = new RadioButton();
  56                     //FIXME : SetBinding in RadioButton crashed as Sensitive Property is disposed.
  57                     //item.Extra.SetBinding(RadioButton.IsSelectedProperty, "Selected");
  58                     item.Extra.WidthSpecification = 80;
  59                     item.Extra.HeightSpecification = 80;
  60                     */
  61
  62                     return item;
  63                 }),
  64                 Header = myTitle,
  65                 ScrollingDirection = ScrollableBase.Direction.Vertical,
  66                 WidthSpecification = LayoutParamPolicies.MatchParent,
  67                 HeightSpecification = LayoutParamPolicies.MatchParent,
  68                                 SelectionMode = selMode
  69             };
  70             colView.SelectionChanged += SelectionEvt;
  71
  72             window.Add(colView);
  73
  74         }
  75
  76         public void SelectionEvt(object sender, SelectionChangedEventArgs ev)
  77         {
  78             //Tizen.Log.Debug("NUI", "LSH :: SelectionEvt called");
  79
  80             //SingleSelection Only have 1 or nil object in the list.
  81             foreach (object item in ev.PreviousSelection)
  82             {
  83                 if (item == null) break;
  84                 Gallery unselItem = (Gallery)item;
  85
  86                 unselItem.Selected = false;
  87                 selectedItem = null;
  88                 //Tizen.Log.Debug("NUI", "LSH :: Unselected: {0}", unselItem.ViewLabel);
  89             }
  90             foreach (object item in ev.CurrentSelection)
  91             {
  92                 if (item == null) break;
  93                 Gallery selItem = (Gallery)item;
  94                 selItem.Selected = true;
  95                 selectedItem = selItem.Name;
  96                 //Tizen.Log.Debug("NUI", "LSH :: Selected: {0}", selItem.ViewLabel);
  97             }
  98             if (colView.Header != null && colView.Header is DefaultTitleItem)
  99             {
 100                 DefaultTitleItem title = (DefaultTitleItem)colView.Header;
 101                 title.Text = "Linear Sample Count[" + itemCount + (selectedItem != null ? "] Selected [" + selectedItem + "]" : "]");
 102             }
 103         }
 104         public void Deactivate()
 105         {
 106             if (colView != null)
 107             {
 108                 colView.Dispose();
 109             }
 110         }
 111     }
 112 }