SL - 总结 - AutoCompleteSelector

/// <summary>

    /// 1.0.6

    /// </summary>

    public abstract class AutoCompleteSelector : AutoCompleteBox

    {

        private IAutoCompleteSelectorDataProvider dataProvider;

        private bool allowSearch = false;

        public AutoCompleteSelector(IAutoCompleteSelectorDataProvider dataProvider)

        {

            this.dataProvider = dataProvider;

            this.Loaded += new RoutedEventHandler(AutoCompleteSelectorLoaded);

        }

        protected abstract IDictionary<string, object> GetParameters();

        void AutoCompleteSelectorLoaded(object sender, RoutedEventArgs e)

        {

            this.KeyDown += new KeyEventHandler(AutoCompleteSelector_KeyDown);

            this.KeyUp += new KeyEventHandler(AutoCompleteSelector_KeyUp);

            this.TextChanged += new RoutedEventHandler(AutoCompleteSelectorTextChanged);

            this.SelectionChanged += new SelectionChangedEventHandler(AutoCompleteSelectorSelectionChanged);

            this.ItemsSource = new ObservableCollection<string>();

        }

        void AutoCompleteSelector_KeyUp(object sender, KeyEventArgs e)

        {

            timeCount = 3;

            if (allowSearch)

            {

                if (!isRunning)

                {

                    thread = new Thread(new ThreadStart(ThreadProcess));

                    thread.Start();

                }

            }

        }

        void AutoCompleteSelector_KeyDown(object sender, KeyEventArgs e)

        {

            allowSearch = true;

            this.SelectedItem = null;

        }

        void AutoCompleteSelectorTextChanged(object sender, RoutedEventArgs e)

        {

        }

        void AutoCompleteSelectorSelectionChanged(object sender, SelectionChangedEventArgs e)

        {

            allowSearch = false;

        }

        private bool isRunning;

        private int timeCount = 0;

        private Thread thread;

        private void ThreadProcess()

        {

            isRunning = true;

            while (timeCount != 0)

            {

                timeCount--;

                Thread.Sleep(100);

            }

            this.Dispatcher.BeginInvoke(new Action(() =>

            {

                dataProvider.SearchData(this.Text, GetParameters(), (result) =>

                {

                    var tempItems = this.ItemsSource as ObservableCollection<string>;

                    tempItems.Clear();

                    if (result != null)

                    {

                        foreach (var item in result)

                        {

                            tempItems.Add(item);

                        }

                    }

                    this.PopulateComplete();

                });

            }));

            isRunning = false;

        }

    }

    public interface IAutoCompleteSelectorDataProvider

    {

        void SearchData(string text, IDictionary<string, object> paramaters, Action<ObservableCollection<string>> callback);

    }