95 lines
3.2 KiB
C#
95 lines
3.2 KiB
C#
using System;
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using System.Collections.Generic;
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using System.ComponentModel;
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using System.Linq;
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using System.Linq.Expressions;
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using System.Reflection;
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using System.Text;
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using System.Threading.Tasks;
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using System.Windows;
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using System.Windows.Controls;
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using VirtualKeyboard.Wpf.Controls;
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using VirtualKeyboard.Wpf.ViewModels;
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using VirtualKeyboard.Wpf.Views;
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namespace VirtualKeyboard.Wpf
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{
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public static class VKeyboard
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{
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private const string _keyboardValueName = "KeyboardValueContent";
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private const string _keyboardName = "KeyboardContent";
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private static Type _hostType = typeof(DefaultKeyboardHost);
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private static TaskCompletionSource<string> _tcs;
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private static Window _windowHost;
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public static void Config(Type hostType)
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{
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if (hostType.IsSubclassOf(typeof(Window))) _hostType = hostType;
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else throw new ArgumentException();
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}
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public static void Listen<T>(Expression<Func<T, string>> property) where T: UIElement
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{
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EventManager.RegisterClassHandler(typeof(T), UIElement.PreviewMouseLeftButtonDownEvent, (RoutedEventHandler)(async (s, e) =>
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{
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if (s is AdvancedTextBox) return;
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var memberSelectorExpression = property.Body as MemberExpression;
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if (memberSelectorExpression == null) return;
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var prop = memberSelectorExpression.Member as PropertyInfo;
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if (prop == null) return;
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var initValue = (string)prop.GetValue(s);
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var value = await OpenAsync(initValue);
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prop.SetValue(s, value, null);
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}));
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}
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public static Task<string> OpenAsync(string initialValue = "")
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{
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_tcs = new TaskCompletionSource<string>();
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try
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{
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if (_windowHost != null) throw new InvalidOperationException();
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_windowHost = (Window)Activator.CreateInstance(_hostType);
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_windowHost.DataContext = new VirtualKeyboardViewModel(initialValue);
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((ContentControl)_windowHost.FindName(_keyboardValueName)).Content = new KeyboardValueView();
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((ContentControl)_windowHost.FindName(_keyboardName)).Content = new VirtualKeyboardView();
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void handler(object s, CancelEventArgs a)
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{
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var result = GetResult();
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((Window)s).Closing -= handler;
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_windowHost = null;
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_tcs?.SetResult(result);
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_tcs = null;
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}
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_windowHost.Closing += handler;
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_windowHost.Owner = Application.Current.MainWindow;
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_windowHost.Show();
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}
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catch (Exception ex) {
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}
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return _tcs.Task;
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}
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public static void Close()
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{
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if (_windowHost == null) throw new InvalidOperationException();
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_windowHost.Close();
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}
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private static string GetResult()
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{
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var viewModel = (VirtualKeyboardViewModel)_windowHost.DataContext;
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return viewModel.KeyboardText;
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}
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}
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}
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