112 lines
3.8 KiB
C#
112 lines
3.8 KiB
C#
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using System.Collections.Generic;
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using System.Linq;
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using System.Management;
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using System.Threading.Tasks;
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namespace DM_Weight.util.TabTip
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{
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public enum HardwareKeyboardIgnoreOptions
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{
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/// <summary>
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/// Do not ignore any keyboard.
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/// </summary>
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DoNotIgnore,
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/// <summary>
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/// Ignore keyboard, if there is only one, and it's description
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/// can be found in ListOfKeyboardsToIgnore.
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/// </summary>
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IgnoreIfSingleInstanceOnList,
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/// <summary>
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/// Ignore keyboard, if there is only one.
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/// </summary>
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IgnoreIfSingleInstance,
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/// <summary>
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/// Ignore all keyboards for which the description
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/// can be found in ListOfKeyboardsToIgnore
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/// </summary>
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IgnoreIfOnList,
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/// <summary>
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/// Ignore all keyboards
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/// </summary>
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IgnoreAll
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}
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internal static class HardwareKeyboard
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{
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private static bool? _isConnected;
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/// <summary>
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/// Checks if Hardware Keyboard is Connected
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/// </summary>
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/// <returns></returns>
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internal static async Task<bool> IsConnectedAsync()
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{
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Task<bool> KeyboardConnectedCheckTask = Task.Run(() =>
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{
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SelectQuery SelectKeyboardsQuery = new SelectQuery("Win32_Keyboard");
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using (ManagementObjectSearcher Searcher = new ManagementObjectSearcher(SelectKeyboardsQuery))
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using (ManagementObjectCollection Keyboards = Searcher.Get())
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{
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if (Keyboards.Count == 0)
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return false;
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switch (IgnoreOptions)
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{
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case HardwareKeyboardIgnoreOptions.IgnoreAll:
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return false;
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case HardwareKeyboardIgnoreOptions.DoNotIgnore:
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return Keyboards.Count > 0;
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case HardwareKeyboardIgnoreOptions.IgnoreIfSingleInstance:
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return Keyboards.Count > 1;
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case HardwareKeyboardIgnoreOptions.IgnoreIfSingleInstanceOnList:
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return (Keyboards.Count > 1) ||
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(Keyboards.Count == 1 &&
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!IsIgnoredKeyboard(Keyboards.Cast<ManagementBaseObject>().First()));
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case HardwareKeyboardIgnoreOptions.IgnoreIfOnList:
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return Keyboards.Cast<ManagementBaseObject>().Any(k => !IsIgnoredKeyboard(k));
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default:
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return true;
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}
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}
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});
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#pragma warning disable 4014
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KeyboardConnectedCheckTask.ContinueWith(t => _isConnected = t.Result);
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#pragma warning restore 4014
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if (_isConnected != null)
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return _isConnected.Value;
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else
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return await KeyboardConnectedCheckTask;
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}
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private static bool IsIgnoredKeyboard(ManagementBaseObject keyboard)
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{
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string description = keyboard.Properties.Cast<PropertyData>()
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.Where(k => k.Name == "Description")
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.Select(k => k.Value)
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.First()
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.ToString();
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return ListOfKeyboardsToIgnore.Contains(description);
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}
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internal static HardwareKeyboardIgnoreOptions IgnoreOptions = HardwareKeyboardIgnoreOptions.DoNotIgnore;
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/// <summary>
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/// Description of keyboards to ignore if there is only one instance of given keyboard.
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/// If you want to ignore some ghost keyboard, add it's description to this list
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/// </summary>
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internal static List<string> ListOfKeyboardsToIgnore { get; } = new List<string>();
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}
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}
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