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

   1 using System.Collections.Generic;
   2 using System.Collections.ObjectModel;
   3 using Tizen.NUI.BaseComponents;
   4 using Tizen.NUI.Components;
   5 using Tizen.NUI.Binding;
   6 using System.ComponentModel;
   7 using System;
   8
   9 namespace Tizen.NUI.Samples
  10 {
  11     public class CollectionViewLinearSample : IExample
  12     {
  13         CollectionView colView;
  14         int itemCount = 500;
  15         string selectedItem;
  16         ItemSelectionMode selMode;
  17         ObservableCollection<Gallery> gallerySource;
  18         Gallery insertMenu = new Gallery(999, "Insert item to 3rd");
  19         Gallery deleteMenu = new Gallery(999, "Delete item at 3rd");
  20         Gallery moveMenu = new Gallery(999, "Move last item to 3rd");
  21
  22
  23         public void Activate()
  24         {
  25             Window window = NUIApplication.GetDefaultWindow();
  26
  27             var myViewModelSource = gallerySource = new GalleryViewModel(itemCount);
  28             // Add test menu options.
  29             gallerySource.Insert(0, moveMenu);
  30             gallerySource.Insert(0, deleteMenu);
  31             gallerySource.Insert(0, insertMenu);
  32
  33             selMode = ItemSelectionMode.SingleSelection;
  34             DefaultTitleItem myTitle = new DefaultTitleItem();
  35             myTitle.Text = "Linear Sample Count["+itemCount+"]";
  36             //Set Width Specification as MatchParent to fit the Item width with parent View.
  37             myTitle.WidthSpecification = LayoutParamPolicies.MatchParent;
  38
  39             colView = new CollectionView()
  40             {
  41                 ItemsSource = myViewModelSource,
  42                 ItemsLayouter = new LinearLayouter(),
  43                 ItemTemplate = new DataTemplate(() =>
  44                 {
  45                     var rand = new Random();
  46                     DefaultLinearItem item = new DefaultLinearItem();
  47                     //Set Width Specification as MatchParent to fit the Item width with parent View.
  48                     item.WidthSpecification = LayoutParamPolicies.MatchParent;
  49
  50                     //Decorate Label
  51                     item.Label.SetBinding(TextLabel.TextProperty, "ViewLabel");
  52                     item.Label.HorizontalAlignment = HorizontalAlignment.Begin;
  53
  54                     //Decorate SubLabel
  55                     if ((rand.Next() % 2) == 0)
  56                     {
  57                         item.SubLabel.SetBinding(TextLabel.TextProperty, "Name");
  58                         item.SubLabel.HorizontalAlignment = HorizontalAlignment.Begin;
  59                     }
  60
  61                     //Decorate Icon
  62                     item.Icon.SetBinding(ImageView.ResourceUrlProperty, "ImageUrl");
  63                     item.Icon.WidthSpecification = 48;
  64                     item.Icon.HeightSpecification = 48;
  65
  66                     //Decorate Extra RadioButton.
  67                     //[NOTE] This is sample of RadioButton usage in CollectionView.
  68                     // RadioButton change their selection by IsSelectedProperty bindings with
  69                     // SelectionChanged event with SingleSelection ItemSelectionMode of CollectionView.
  70                     // be aware of there are no RadioButtonGroup.
  71                     item.Extra = new RadioButton();
  72                     //FIXME : SetBinding in RadioButton crashed as Sensitive Property is disposed.
  73                     //item.Extra.SetBinding(RadioButton.IsSelectedProperty, "Selected");
  74                     item.Extra.WidthSpecification = 48;
  75                     item.Extra.HeightSpecification = 48;
  76
  77                     return item;
  78                 }),
  79                 Header = myTitle,
  80                 ScrollingDirection = ScrollableBase.Direction.Vertical,
  81                 WidthSpecification = LayoutParamPolicies.MatchParent,
  82                 HeightSpecification = LayoutParamPolicies.MatchParent,
  83                                 SelectionMode = selMode
  84             };
  85             colView.SelectionChanged += SelectionEvt;
  86
  87             window.Add(colView);
  88
  89         }
  90
  91         public void SelectionEvt(object sender, SelectionChangedEventArgs ev)
  92         {
  93             //Tizen.Log.Debug("NUI", "LSH :: SelectionEvt called");
  94
  95             //SingleSelection Only have 1 or nil object in the list.
  96             foreach (object item in ev.PreviousSelection)
  97             {
  98                 if (item == null) break;
  99                 Gallery unselItem = (Gallery)item;
 100
 101                 unselItem.Selected = false;
 102                 selectedItem = null;
 103                 //Tizen.Log.Debug("NUI", "LSH :: Unselected: {0}", unselItem.ViewLabel);
 104             }
 105             foreach (object item in ev.CurrentSelection)
 106             {
 107                 if (item == null) break;
 108                 Gallery selItem = (Gallery)item;
 109                 //selItem.Selected = true;
 110                 selectedItem = selItem.Name;
 111
 112                 // Check test menu options.
 113                 if (selItem == insertMenu)
 114                 {
 115                     // Insert new item to index 3.
 116                     Random rand = new Random();
 117                     int idx = rand.Next(1000);
 118                     gallerySource.Insert(3, new Gallery(idx, "Inserted Item"));
 119                 }
 120                 else if (selItem == deleteMenu)
 121                 {
 122                     // Remove item in index 3.
 123                     gallerySource.RemoveAt(3);
 124                 }
 125                 else if (selItem == moveMenu)
 126                 {
 127                     // Move last indexed item to index 3.
 128                     gallerySource.Move(gallerySource.Count - 1, 3);
 129                 }
 130                 //Tizen.Log.Debug("NUI", "LSH :: Selected: {0}", selItem.ViewLabel);
 131             }
 132             if (colView.Header != null && colView.Header is DefaultTitleItem)
 133             {
 134                 DefaultTitleItem title = (DefaultTitleItem)colView.Header;
 135                 title.Text = "Linear Sample Count[" + gallerySource.Count + (selectedItem != null ? "] Selected [" + selectedItem + "]" : "]");
 136             }
 137         }
 138
 139         public void Deactivate()
 140         {
 141             if (colView != null)
 142             {
 143                 colView.Dispose();
 144             }
 145         }
 146     }
 147 }