public AlphaSelectUserPage(Action <string> aReciever, IEnumerable <string> ExistUsers = null)
{
Reciever = aReciever;
Title = L["Select a user"];
List = new ListView
{
ItemTemplate = new DataTemplateEx(AlphaFactory.GetGitHubUserCellType())
.SetBindingList("ImageSourceUrl", "Text"),
};
List.ItemTapped += (sender, e) =>
{
var User = e.Item.GetValue <string>("Text");
if (null != User)
{
Debug.WriteLine($"Select User: {User}");
Reciever(User);
Domain.AddRecentUser(User);
}
AlphaFactory.MakeSureApp().Navigation.PopAsync();
};
List.ItemsSource = Domain.GetRecentUsers()
.Where(i => !(ExistUsers?.Contains(i) ?? false))
.Select(i => ListItem.Make(i));
var SearchCommand = new Command
(
async() =>
{
List.IsVisible = false;
SearchButton.IsVisible = false;
Indicator.IsVisible = true;
Indicator.IsRunning = true;
List.ItemsSource = new object[] { };
try
{
var Json = await Domain.GetStringFromUrlAsync
(
GitHub.GetSearchUsersUrl(Search.Text)
);
Device.BeginInvokeOnMainThread
(
() =>
{
try
{
List.ItemsSource = GitHub.SearchResult <GitHub.SearchUser> .Parse(Json)
.Items
.Select(i => ListItem.Make(i));
}
catch (Exception Err)
{
Debug.WriteLine(Err);
if (!string.IsNullOrWhiteSpace(Search.Text))
{
List.ItemsSource = new[] { Search.Text.Trim() }
.Select(i => ListItem.Make(i));
}
}
Indicator.IsRunning = false;
Indicator.IsVisible = false;
List.IsVisible = true;
}
);
}
catch (Exception Err)
{
Debug.WriteLine(Err);
if (!string.IsNullOrWhiteSpace(Search.Text))
{
List.ItemsSource = new[] { Search.Text.Trim() }
.Select(i => ListItem.Make(i));
}
Indicator.IsRunning = false;
Indicator.IsVisible = false;
List.IsVisible = true;
}
}
);
Search = new SearchBar
{
Placeholder = L["User's name etc."],
SearchCommand = SearchCommand,
};
Indicator = new ActivityIndicator
{
VerticalOptions = LayoutOptions.CenterAndExpand,
HorizontalOptions = LayoutOptions.CenterAndExpand,
IsVisible = false,
};
SearchButton = new Button
{
VerticalOptions = LayoutOptions.StartAndExpand,
HorizontalOptions = LayoutOptions.FillAndExpand,
Text = L["Search"],
Command = SearchCommand,
IsVisible = false,
};
Search.TextChanged += (sender, e) =>
{
var IsNullOrWhiteSpace = string.IsNullOrWhiteSpace(Search.Text);
List.IsVisible = IsNullOrWhiteSpace;
Indicator.IsVisible = false;
SearchButton.IsVisible = !IsNullOrWhiteSpace;
};
Content = new StackLayout
{
Orientation = StackOrientation.Vertical,
//Spacing = 1.0,
//BackgroundColor = Color.Gray,
Children =
{
Search,
List,
Indicator,
SearchButton,
}
};
}