test/Tizen.NUI.Samples/Tizen.NUI.Samples/Samples/CollectionViewDemo/Group/CollectionViewGridGroupSample.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 CollectionViewGridGroupSample : IExample
  12     {
  13         CollectionView colView;
  14         int selectedCount;
  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.MultipleSelections;
  24             DefaultTitleItem myTitle = new DefaultTitleItem();
  25             myTitle.Text = "Grid Sample Count["+ groupSource.Count+"] Selected["+selectedCount+"]";
  26             //Set Width Specification as MatchParent to fit the Item width with parent View.
  27             myTitle.WidthSpecification = LayoutParamPolicies.MatchParent;
  28
  29             colView = new CollectionView()
  30             {
  31                 ItemsSource = groupSource,
  32                 ItemsLayouter = new GridLayouter(),
  33                 ItemTemplate = new DataTemplate(() =>
  34                 {
  35                     DefaultGridItem item = new DefaultGridItem();
  36                     item.WidthSpecification = 180;
  37                     item.HeightSpecification = 240;
  38                     //Decorate Label
  39                     item.Caption.SetBinding(TextLabel.TextProperty, "ViewLabel");
  40                     item.Caption.HorizontalAlignment = HorizontalAlignment.Center;
  41                     //Decorate Image
  42                     item.Image.SetBinding(ImageView.ResourceUrlProperty, "ImageUrl");
  43                     item.Image.WidthSpecification = 170;
  44                     item.Image.HeightSpecification = 170;
  45                     //Decorate Badge checkbox.
  46                     //[NOTE] This is sample of CheckBox usage in CollectionView.
  47                     // Checkbox change their selection by IsSelectedProperty bindings with
  48                     // SelectionChanged event with MulitpleSelections ItemSelectionMode of CollectionView.
  49                     item.Badge = new CheckBox();
  50                     //FIXME : SetBinding in RadioButton crashed as Sensitive Property is disposed.
  51                     //item.Badge.SetBinding(CheckBox.IsSelectedProperty, "Selected");
  52                     item.Badge.WidthSpecification = 30;
  53                     item.Badge.HeightSpecification = 30;
  54
  55                     return item;
  56                 }),
  57                 GroupHeaderTemplate = new DataTemplate(() =>
  58                 {
  59                     DefaultTitleItem group = new DefaultTitleItem();
  60                     //Set Width Specification as MatchParent to fit the Item width with parent View.
  61                     group.WidthSpecification = LayoutParamPolicies.MatchParent;
  62
  63                     group.Label.SetBinding(TextLabel.TextProperty, "Date");
  64                     group.Label.HorizontalAlignment = HorizontalAlignment.Begin;
  65
  66                     return group;
  67                 }),
  68                 Header = myTitle,
  69                 IsGrouped = true,
  70                 ScrollingDirection = ScrollableBase.Direction.Vertical,
  71                 WidthSpecification = LayoutParamPolicies.MatchParent,
  72                 HeightSpecification = LayoutParamPolicies.MatchParent,
  73                                 SelectionMode = selMode
  74             };
  75             colView.SelectionChanged += SelectionEvt;
  76
  77             window.Add(colView);
  78         }
  79
  80         public void SelectionEvt(object sender, SelectionChangedEventArgs ev)
  81         {
  82             List<object> oldSel = new List<object>(ev.PreviousSelection);
  83             List<object> newSel = new List<object>(ev.CurrentSelection);
  84
  85             foreach (object item in oldSel)
  86             {
  87                 if (item != null && item is Gallery)
  88                 {
  89                     Gallery galItem = (Gallery)item;
  90                     if (!(newSel.Contains(item)))
  91                     {
  92                         galItem.Selected = false;
  93                         Tizen.Log.Debug("Unselected: {0}", galItem.ViewLabel);
  94                         selectedCount--;
  95                     }
  96                 }
  97                 else continue;
  98             }
  99             foreach (object item in newSel)
 100             {
 101                 if (item != null && item is Gallery)
 102                 {
 103                     Gallery galItem = (Gallery)item;
 104                     if (!(oldSel.Contains(item)))
 105                     {
 106                         galItem.Selected = true;
 107                         Tizen.Log.Debug("Selected: {0}", galItem.ViewLabel);
 108                         selectedCount++;
 109                     }
 110                 }
 111                 else continue;
 112             }
 113             if (colView.Header != null && colView.Header is DefaultTitleItem)
 114             {
 115                 DefaultTitleItem title = (DefaultTitleItem)colView.Header;
 116                 title.Text = "Grid Sample Count["+ groupSource.Count + "] Selected["+selectedCount+"]";
 117             }
 118         }
 119
 120         public void Deactivate()
 121         {
 122             if (colView != null)
 123             {
 124                 colView.Dispose();
 125             }
 126         }
 127     }
 128 }