diff options
Diffstat (limited to 'Xamarin.Forms.Controls.Issues/Xamarin.Forms.Controls.Issues.Shared/Bugzilla32148.cs')
| -rw-r--r-- | Xamarin.Forms.Controls.Issues/Xamarin.Forms.Controls.Issues.Shared/Bugzilla32148.cs | 240 |
1 files changed, 240 insertions, 0 deletions
diff --git a/Xamarin.Forms.Controls.Issues/Xamarin.Forms.Controls.Issues.Shared/Bugzilla32148.cs b/Xamarin.Forms.Controls.Issues/Xamarin.Forms.Controls.Issues.Shared/Bugzilla32148.cs new file mode 100644 index 00000000..76e3819b --- /dev/null +++ b/Xamarin.Forms.Controls.Issues/Xamarin.Forms.Controls.Issues.Shared/Bugzilla32148.cs @@ -0,0 +1,240 @@ +using System; + +using Xamarin.Forms.CustomAttributes; +using System.Linq.Expressions; +using System.Threading.Tasks; +using System.Collections.ObjectModel; +using System.Linq; +using System.Collections.Generic; + +#if UITEST +using Xamarin.UITest; +using NUnit.Framework; +#endif + +namespace Xamarin.Forms.Controls +{ + [Preserve (AllMembers = true)] + [Issue (IssueTracker.Bugzilla, 32148, " Pull to refresh hides the first item on a list view")] + public class Bugzilla32148 : TestContentPage // or TestMasterDetailPage, etc ... + { + Button _searchBtn; + ListView _contactsListView; + ObservableCollection<Grouping1<string, ContactViewModel1>> _listViewItemSource; + + protected override void Init () + { + Title = "Contacts"; + Content = CreateContent(); + // Disable the await warning + #pragma warning disable 4014 + LoadContactsAsync(); + #pragma warning restore 4014 + } + + Layout CreateContent() + { + _listViewItemSource = new ObservableCollection<Grouping1<string, ContactViewModel1>>(); + + _contactsListView = new ListView() + { + ItemsSource = _listViewItemSource, + IsPullToRefreshEnabled = true, + IsGroupingEnabled = true, + GroupShortNameBinding = new Binding("Key"), + GroupHeaderTemplate = new DataTemplate(typeof(HeaderCell)), + HasUnevenRows = true, + ItemTemplate = new DataTemplate(typeof(ContactItemTemplate)) + }; + + _contactsListView.Refreshing += contactsListView_Refreshing; + _searchBtn = new Button() { Text = "Search" }; + _searchBtn.Clicked += (object sender, EventArgs e) => _contactsListView.BeginRefresh (); + + Grid grd = new Grid (); + grd.RowDefinitions.Add (new RowDefinition () { Height = GridLength.Auto } ); + grd.RowDefinitions.Add (new RowDefinition ()); + grd.Children.Add (_searchBtn); + grd.Children.Add (_contactsListView); + Grid.SetRow (_contactsListView, 1); + return grd; + } + + async void contactsListView_Refreshing(object sender, EventArgs e) + { + await Task.Delay (1000); + await LoadContactsAsync(true); + } + + async Task LoadContactsAsync(bool isPullToRefresh = false) + { + await ReadFromDbAsync(); + _contactsListView.IsRefreshing &= !isPullToRefresh; + } + + async Task ReadFromDbAsync(Expression<Func<Contact1, bool>> searchExpression = null) + { + await Task.Run(() => + { + Device.BeginInvokeOnMainThread(() => + { + // If we want to filter the data, GetItems by expression + IList<Contact1> contactEntities = new List<Contact1>(); + List<ContactViewModel1> data = new List<ContactViewModel1>(); + + if (contactEntities == null || contactEntities.Count == 0) + { + // Fill with dummy contacts + for (int i = 0; i < 20; i++) + { + Contact1 contact = new Contact1() + { + FirstName = "Contact" + i, + LastName = "LastName", + Company = "Company" + i + } ; + contactEntities.Add(contact); + } + } + + // Create Contact items for the listView + foreach (Contact1 contact in contactEntities) + { + ContactViewModel1 contactItem = new ContactViewModel1() + { + FirstName = contact.FirstName, + LastName = contact.LastName, + FullName = contact.FirstName + " " + contact.LastName, + Company = contact.Company, + } ; + + data.Add(contactItem); + } + + // Sort, order and group the contacts + var contacts = from contact in data + orderby contact.LastName, contact.FirstName + group contact by contact.FirstNameSort into contactGroup + select new Grouping1<string, ContactViewModel1>(contactGroup.Key, contactGroup); + + // Create a new collection of groups + var grouppedContacts = new ObservableCollection<Grouping1<string, ContactViewModel1>>(contacts); + + _contactsListView.ItemsSource = grouppedContacts; + } ); + } ); + } + + public class Grouping1<K, T> : ObservableCollection<T> + { + public K Key { get; private set; } + + public Grouping1(K key, IEnumerable<T> items) + { + Key = key; + foreach (T item in items) + { + Items.Add(item); + } + } + } + + [Preserve (AllMembers = true)] + public class ContactViewModel1 + { + public string FirstName { get; set; } + public string LastName { get; set; } + public string FullName { get; set; } + public string Company { get; set; } + public ImageSource IconSource { get; set; } + + public string FirstNameSort + { + get + { + if (string.IsNullOrWhiteSpace(FirstName) || FirstName.Length == 0) + { + return "?"; + } + + return FirstName[0].ToString().ToUpper(); + } + } + } + + [Preserve (AllMembers = true)] + public class Contact1 + { + public string FirstName { get; set; } + public string LastName { get; set; } + public string Company { get; set; } + public byte[] ProfilePicture { get; set; } + public string Email { get; set; } + public string Mobile { get; set; } + public string RoomNumber { get; set; } + public string Street { get; set; } + public string Zip { get; set; } + public string City { get; set; } + public string CountryCode { get; set; } + } + + [Preserve (AllMembers = true)] + public class HeaderCell : ViewCell + { + public HeaderCell() + { + Height = 23; + + Label title = new Label + { + TextColor = Color.White, + VerticalOptions = LayoutOptions.Center + } ; + + title.SetBinding(Label.TextProperty, "Key"); + + View = new StackLayout + { + HorizontalOptions = LayoutOptions.FillAndExpand, + HeightRequest = 23, + BackgroundColor = Color.Pink, + Orientation = StackOrientation.Horizontal, + Padding = new Thickness(Sizes.GroupingSidePadding, 0, 0, 0), + Children = { title } + }; + } + + struct Sizes + { + public static readonly double GroupingSidePadding = 5; + } + } + + [Preserve (AllMembers = true)] + public class ContactItemTemplate : ImageCell + { + public ContactItemTemplate() + : base() + { + + SetBinding(TextProperty, new Binding("FullName")); + SetBinding(DetailProperty, new Binding("Company")); + SetBinding(ImageSourceProperty, new Binding("IconSource")); + + Height = 50; + } + } + + #if UITEST + [Test] + public void Bugzilla32148Test () + { + RunningApp.WaitForElement (q => q.Marked ("Contact0 LastName")); + RunningApp.Tap (q => q.Marked("Search")); + RunningApp.WaitForElement (q => q.Marked ("Contact0 LastName")); + RunningApp.Screenshot ("For manual review, is the first cell visible?"); + } + #endif + } + +} |