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