summaryrefslogtreecommitdiff
path: root/Xamarin.Forms.Controls/GalleryPages/UnevenListGallery.cs
diff options
context:
space:
mode:
Diffstat (limited to 'Xamarin.Forms.Controls/GalleryPages/UnevenListGallery.cs')
-rw-r--r--Xamarin.Forms.Controls/GalleryPages/UnevenListGallery.cs112
1 files changed, 112 insertions, 0 deletions
diff --git a/Xamarin.Forms.Controls/GalleryPages/UnevenListGallery.cs b/Xamarin.Forms.Controls/GalleryPages/UnevenListGallery.cs
new file mode 100644
index 00000000..1c8b16c4
--- /dev/null
+++ b/Xamarin.Forms.Controls/GalleryPages/UnevenListGallery.cs
@@ -0,0 +1,112 @@
+´╗┐using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Xamarin.Forms.Controls
+{
+ public class UnevenListGallery : ContentPage
+ {
+ public UnevenListGallery ()
+ {
+ Padding = new Thickness (0, 20, 0, 0);
+
+ var list = new ListView {
+ HasUnevenRows = true
+ };
+
+ bool next = true;
+ list.ItemTemplate = new DataTemplate (() => {
+ bool tall = next;
+ next = !next;
+
+ var cell = new TextCell {
+ Height = (tall) ? 88 : 44
+ };
+
+ cell.SetBinding (TextCell.TextProperty, ".");
+ return cell;
+ });
+
+ list.ItemsSource = new[] { "Tall", "Short", "Tall", "Short" };
+
+ var listViewCellDynamicHeight = new ListView {
+ HasUnevenRows = true,
+ AutomationId= "unevenCellListGalleryDynamic"
+ };
+
+ listViewCellDynamicHeight.ItemsSource = new [] {
+ @"That Flesh is heir to? 'Tis a consummation
+Devoutly to be wished. To die, to sleep,
+To sleep, perchance to Dream; Aye, there's the rub,
+For in that sleep of death, what dreams may come,That Flesh is heir to? 'Tis a consummation
+Devoutly to be wished. To die, to sleep,
+To sleep, perchance to Dream; Aye, there's the rub,
+For in that sleep of death, what dreams may come",
+ };
+
+ listViewCellDynamicHeight.ItemTemplate = new DataTemplate (typeof(UnevenRowsCell));
+
+ listViewCellDynamicHeight.ItemTapped += (sender, e) => {
+ if (e == null)
+ return; // has been set to null, do not 'process' tapped event
+ ((ListView)sender).SelectedItem = null; // de-select the row
+ };
+
+ var grd = new Grid ();
+
+ grd.RowDefinitions.Add (new RowDefinition ());
+ grd.RowDefinitions.Add (new RowDefinition ());
+
+ grd.Children.Add (listViewCellDynamicHeight);
+ grd.Children.Add (list);
+
+ Grid.SetRow (list, 1);
+
+ Content = grd;
+ }
+
+ public class UnevenRowsCell : ViewCell
+ {
+ public UnevenRowsCell ()
+ {
+ var label1 = new Label {
+ Text = "Label 1",
+ FontSize = Device.GetNamedSize (NamedSize.Small, typeof(Label))
+ };
+ label1.SetBinding (Label.TextProperty, new Binding ("."));
+
+ View = new StackLayout {
+ Orientation = StackOrientation.Vertical,
+ VerticalOptions = LayoutOptions.StartAndExpand,
+ Padding = new Thickness (15, 5, 5, 5),
+ Children = { label1 }
+ };
+ }
+ // This is the code used before and still works by setting the height of the cell
+ // const int avgCharsInRow = 35;
+ // const int defaultHeight = 44;
+ // const int extraLineHeight = 20;
+ // protected override void OnBindingContextChanged ()
+ // {
+ // base.OnBindingContextChanged ();
+ //
+ // if (Device.OS == TargetPlatform.iOS) {
+ // var text = (string)BindingContext;
+ //
+ // var len = text.Length;
+ //
+ // if (len < (avgCharsInRow * 2)) {
+ // // fits in one cell
+ // Height = defaultHeight;
+ // } else {
+ // len = len - (avgCharsInRow * 2);
+ // var extraRows = len / 35;
+ // Height = defaultHeight + extraRows * extraLineHeight;
+ // }
+ // }
+ // }
+ }
+ }
+}