131 строка
3.5 KiB
C#
131 строка
3.5 KiB
C#
using System;
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using System.Collections;
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using System.Collections.Generic;
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using System.Collections.ObjectModel;
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using System.Linq;
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using System.Text;
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using System.Threading.Tasks;
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using Xamarin.Forms.CustomAttributes;
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using Xamarin.Forms.Internals;
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namespace Xamarin.Forms.Controls.TestCasesPages
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{
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[Preserve (AllMembers=true)]
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[Issue (IssueTracker.Github, 1590, "ListView.IsGroupingEnabled results ins ArguementOutOfRangeException", PlatformAffected.Android)]
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public class Issue1590 : ContentPage
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{
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ListView _listView;
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public Issue1590()
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{
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var vm = new RootPageViewModel();
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Content = BuildListView(vm);
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}
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StackLayout BuildListView(RootPageViewModel viewModel)
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{
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var headerTemplate = new DataTemplate(typeof(ModuleMediaListHeaderTemplate));
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headerTemplate.CreateContent();
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var itemTemplate = new DataTemplate(typeof(ModuleMediaListItemTemplate));
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itemTemplate.CreateContent();
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_listView = new ListView
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{
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ItemsSource = viewModel.MediaSections,
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IsGroupingEnabled = true,
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GroupDisplayBinding = new Binding("SectionName"),
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HasUnevenRows = false,
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GroupHeaderTemplate = headerTemplate,
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ItemTemplate = itemTemplate
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};
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return new StackLayout { Children = { _listView } };
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}
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}
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[Preserve (AllMembers=true)]
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public class RootPageViewModel
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{
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public IEnumerable MediaSections
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{
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get
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{
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var titles = new[] {"First", "Second", "Third", "Forth", "Fifth"};
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return titles.Select(section => new MediaListSection(section)
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{
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new FooViewModel {Title = "Foo", Description = "description for foo"},
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new FooViewModel {Title = "Bar", Description = "description for bar"},
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new FooViewModel {Title = "Baz", Description = "description for baz"},
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new FooViewModel {Title = "Fiz", Description = "description for fiz"},
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new FooViewModel {Title = "Buz", Description = "description for buz"},
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}).ToList();
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}
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}
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}
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[Preserve (AllMembers=true)]
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public class MediaListSection : ObservableCollection<FooViewModel>
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{
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public string SectionName { get; private set; }
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public MediaListSection(string sectionName)
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{
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SectionName = sectionName;
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}
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}
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[Preserve (AllMembers=true)]
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public class FooViewModel
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{
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public string Title { get; set; }
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public string Description { get; set; }
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}
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[Preserve (AllMembers=true)]
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public class ModuleMediaListItemTemplate : ViewCell
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{
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public ModuleMediaListItemTemplate()
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{
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#pragma warning disable 618
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var title = new Label { YAlign = TextAlignment.Center };
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#pragma warning restore 618
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title.SetBinding(Label.TextProperty, new Binding("Title", BindingMode.OneWay));
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#pragma warning disable 618
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var description = new Label { YAlign = TextAlignment.Center };
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#pragma warning restore 618
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description.SetBinding(Label.TextProperty, new Binding("Description", BindingMode.OneWay));
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View = new StackLayout
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{
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Orientation = StackOrientation.Horizontal,
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Padding = new Thickness(8),
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Children = { title, description }
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};
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}
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}
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[Preserve (AllMembers=true)]
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public class ModuleMediaListHeaderTemplate : ViewCell
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{
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public ModuleMediaListHeaderTemplate()
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{
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#pragma warning disable 618
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var title = new Label { TextColor = Color.White, YAlign = TextAlignment.Center };
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#pragma warning restore 618
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title.SetBinding(Label.TextProperty, new Binding("SectionName", BindingMode.OneWay));
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View = new StackLayout
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{
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Padding = new Thickness(8, 0),
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BackgroundColor = Color.FromHex("#999999"),
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Orientation = StackOrientation.Horizontal,
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Children = { title },
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};
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}
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}
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}
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