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

   1 using System.Collections.Generic;
   2 using Tizen.NUI.BaseComponents;
   3 using Tizen.NUI.Components;
   4 using Tizen.NUI.Binding;
   5
   6 namespace Tizen.NUI.Samples
   7 {
   8     public class CollectionViewGridSample : IExample
   9     {
  10         CollectionView colView;
  11         int itemCount = 500;
  12         int selectedCount;
  13         ItemSelectionMode selMode;
  14
  15         public void Activate()
  16         {
  17             Window window = NUIApplication.GetDefaultWindow();
  18
  19             var myViewModelSource = new GalleryViewModel(itemCount);
  20             selMode = ItemSelectionMode.MultipleSelections;
  21             DefaultTitleItem myTitle = new DefaultTitleItem();
  22             myTitle.Text = "Grid Sample Count["+itemCount+"] Selected["+selectedCount+"]";
  23             //Set Width Specification as MatchParent to fit the Item width with parent View.
  24             myTitle.WidthSpecification = LayoutParamPolicies.MatchParent;
  25
  26             colView = new CollectionView()
  27             {
  28                 ItemsSource = myViewModelSource,
  29                 ItemsLayouter = new GridLayouter(),
  30                 ItemTemplate = new DataTemplate(() =>
  31                 {
  32                     DefaultGridItem item = new DefaultGridItem();
  33                     item.WidthSpecification = 180;
  34                     item.HeightSpecification = 240;
  35                     //Decorate Label
  36                     item.Caption.SetBinding(TextLabel.TextProperty, "ViewLabel");
  37                     item.Caption.HorizontalAlignment = HorizontalAlignment.Center;
  38                     //Decorate Image
  39                     item.Image.SetBinding(ImageView.ResourceUrlProperty, "ImageUrl");
  40                     item.Image.WidthSpecification = 170;
  41                     item.Image.HeightSpecification = 170;
  42                     //Decorate Badge checkbox.
  43                     //[NOTE] This is sample of CheckBox usage in CollectionView.
  44                     // Checkbox change their selection by IsSelectedProperty bindings with
  45                     // SelectionChanged event with MulitpleSelections ItemSelectionMode of CollectionView.
  46                     item.Badge = new CheckBox();
  47                     //FIXME : SetBinding in RadioButton crashed as Sensitive Property is disposed.
  48                     //item.Badge.SetBinding(CheckBox.IsSelectedProperty, "Selected");
  49                     item.Badge.WidthSpecification = 30;
  50                     item.Badge.HeightSpecification = 30;
  51
  52                     return item;
  53                 }),
  54                 Header = myTitle,
  55                 ScrollingDirection = ScrollableBase.Direction.Vertical,
  56                 WidthSpecification = LayoutParamPolicies.MatchParent,
  57                 HeightSpecification = LayoutParamPolicies.MatchParent,
  58                                 SelectionMode = selMode
  59             };
  60             colView.SelectionChanged += SelectionEvt;
  61
  62             window.Add(colView);
  63         }
  64
  65         public void SelectionEvt(object sender, SelectionChangedEventArgs ev)
  66         {
  67             List<object> oldSel = new List<object>(ev.PreviousSelection);
  68             List<object> newSel = new List<object>(ev.CurrentSelection);
  69
  70             foreach (object item in oldSel)
  71             {
  72                 if (item != null && item is Gallery)
  73                 {
  74                     Gallery galItem = (Gallery)item;
  75                     if (!(newSel.Contains(item)))
  76                     {
  77                         galItem.Selected = false;
  78                         Tizen.Log.Debug("Unselected: {0}", galItem.ViewLabel);
  79                         selectedCount--;
  80                     }
  81                 }
  82                 else continue;
  83             }
  84             foreach (object item in newSel)
  85             {
  86                 if (item != null && item is Gallery)
  87                 {
  88                     Gallery galItem = (Gallery)item;
  89                     if (!(oldSel.Contains(item)))
  90                     {
  91                         galItem.Selected = true;
  92                         Tizen.Log.Debug("Selected: {0}", galItem.ViewLabel);
  93                         selectedCount++;
  94                     }
  95                 }
  96                 else continue;
  97             }
  98             if (colView.Header != null && colView.Header is DefaultTitleItem)
  99             {
 100                 DefaultTitleItem title = (DefaultTitleItem)colView.Header;
 101                 title.Text = "Grid Sample Count["+itemCount+"] Selected["+selectedCount+"]";
 102             }
 103         }
 104
 105         public void Deactivate()
 106         {
 107             if (colView != null)
 108             {
 109                 colView.Dispose();
 110             }
 111         }
 112     }
 113 }