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@@ -0,0 +1,143 @@
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+using Avalonia.Controls;
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+using Avalonia.LogicalTree;
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+using Avalonia.Markup;
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+using Avalonia.Markup.Xaml;
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+using Avalonia.Markup.Xaml.Data;
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+using System;
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+using System.Collections.Generic;
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+using System.Linq;
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+using System.Threading;
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+using System.Threading.Tasks;
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+
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+namespace ControlCatalog.Pages
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+{
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+ public class AutoCompleteBoxPage : UserControl
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+ {
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+ public class StateData
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+ {
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+ public string Name { get; private set; }
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+ public string Abbreviation { get; private set; }
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+ public string Capital { get; private set; }
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+
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+ public StateData(string name, string abbreviatoin, string capital)
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+ {
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+ Name = name;
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+ Abbreviation = abbreviatoin;
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+ Capital = capital;
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+ }
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+
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+ public override string ToString()
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+ {
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+ return Name;
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+ }
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+ }
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+
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+ private StateData[] BuildAllStates()
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+ {
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+ return new StateData[]
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+ {
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+ new StateData("Alabama","AL","Montgomery"),
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+ new StateData("Alaska","AK","Juneau"),
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+ new StateData("Arizona","AZ","Phoenix"),
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+ new StateData("Arkansas","AR","Little Rock"),
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+ new StateData("California","CA","Sacramento"),
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+ new StateData("Colorado","CO","Denver"),
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+ new StateData("Connecticut","CT","Hartford"),
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+ new StateData("Delaware","DE","Dover"),
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+ new StateData("Florida","FL","Tallahassee"),
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+ new StateData("Georgia","GA","Atlanta"),
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+ new StateData("Hawaii","HI","Honolulu"),
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+ new StateData("Idaho","ID","Boise"),
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+ new StateData("Illinois","IL","Springfield"),
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+ new StateData("Indiana","IN","Indianapolis"),
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+ new StateData("Iowa","IA","Des Moines"),
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+ new StateData("Kansas","KS","Topeka"),
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+ new StateData("Kentucky","KY","Frankfort"),
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+ new StateData("Louisiana","LA","Baton Rouge"),
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+ new StateData("Maine","ME","Augusta"),
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+ new StateData("Maryland","MD","Annapolis"),
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+ new StateData("Massachusetts","MA","Boston"),
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+ new StateData("Michigan","MI","Lansing"),
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+ new StateData("Minnesota","MN","St. Paul"),
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+ new StateData("Mississippi","MS","Jackson"),
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+ new StateData("Missouri","MO","Jefferson City"),
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+ new StateData("Montana","MT","Helena"),
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+ new StateData("Nebraska","NE","Lincoln"),
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+ new StateData("Nevada","NV","Carson City"),
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+ new StateData("New Hampshire","NH","Concord"),
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+ new StateData("New Jersey","NJ","Trenton"),
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+ new StateData("New Mexico","NM","Santa Fe"),
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+ new StateData("New York","NY","Albany"),
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+ new StateData("North Carolina","NC","Raleigh"),
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+ new StateData("North Dakota","ND","Bismarck"),
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+ new StateData("Ohio","OH","Columbus"),
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+ new StateData("Oklahoma","OK","Oklahoma City"),
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+ new StateData("Oregon","OR","Salem"),
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+ new StateData("Pennsylvania","PA","Harrisburg"),
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+ new StateData("Rhode Island","RI","Providence"),
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+ new StateData("South Carolina","SC","Columbia"),
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+ new StateData("South Dakota","SD","Pierre"),
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+ new StateData("Tennessee","TN","Nashville"),
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+ new StateData("Texas","TX","Austin"),
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+ new StateData("Utah","UT","Salt Lake City"),
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+ new StateData("Vermont","VT","Montpelier"),
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+ new StateData("Virginia","VA","Richmond"),
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+ new StateData("Washington","WA","Olympia"),
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+ new StateData("West Virginia","WV","Charleston"),
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+ new StateData("Wisconsin","WI","Madison"),
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+ new StateData("Wyoming","WY","Cheyenne"),
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+ };
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+ }
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+ public StateData[] States { get; private set; }
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+
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+ public AutoCompleteBoxPage()
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+ {
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+ this.InitializeComponent();
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+
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+ States = BuildAllStates();
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+
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+ foreach (AutoCompleteBox box in GetAllAutoCompleteBox())
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+ {
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+ box.Items = States;
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+ }
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+
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+ var converter = new FuncMultiValueConverter<string, string>(parts =>
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+ {
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+ return String.Format("{0} ({1})", parts.ToArray());
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+ });
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+ var binding = new MultiBinding { Converter = converter };
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+ binding.Bindings.Add(new Binding("Name"));
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+ binding.Bindings.Add(new Binding("Abbreviation"));
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+
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+ var multibindingBox = this.FindControl<AutoCompleteBox>("MultiBindingBox");
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+ multibindingBox.ValueMemberBinding = binding;
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+
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+ var asyncBox = this.FindControl<AutoCompleteBox>("AsyncBox");
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+ asyncBox.AsyncPopulator = PopulateAsync;
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+ }
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+ private IEnumerable<AutoCompleteBox> GetAllAutoCompleteBox()
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+ {
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+ return
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+ this.GetLogicalDescendants()
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+ .OfType<AutoCompleteBox>();
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+ }
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+
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+ private bool StringContains(string str, string query)
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+ {
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+ return str.IndexOf(query, StringComparison.OrdinalIgnoreCase) >= 0;
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+ }
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+ private async Task<IEnumerable<object>> PopulateAsync(string searchText, CancellationToken cancellationToken)
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+ {
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+ await Task.Delay(TimeSpan.FromSeconds(1.5), cancellationToken);
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+
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+ return
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+ States.Where(data => StringContains(data.Name, searchText) || StringContains(data.Capital, searchText))
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+ .ToList();
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+ }
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+
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+ private void InitializeComponent()
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+ {
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+ AvaloniaXamlLoader.Load(this);
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+ }
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+ }
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+}
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