90 lines
2.5 KiB
C#
90 lines
2.5 KiB
C#
/*
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* Copyright (c) 2018 ETH Zürich, Educational Development and Technology (LET)
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*/
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using System.Collections.Generic;
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using System.Linq;
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using System.Windows.Forms;
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using SafeExamBrowser.Contracts.I18n;
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using SafeExamBrowser.Contracts.Logging;
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using SafeExamBrowser.Contracts.SystemComponents;
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using SafeExamBrowser.Contracts.UserInterface.Taskbar;
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namespace SafeExamBrowser.SystemComponents
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{
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public class KeyboardLayout : ISystemComponent<ISystemKeyboardLayoutControl>
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{
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private IList<KeyboardLayoutDefinition> layouts = new List<KeyboardLayoutDefinition>();
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private ILogger logger;
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private InputLanguage originalLanguage;
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private ISystemKeyboardLayoutControl control;
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private IText text;
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public KeyboardLayout(ILogger logger, IText text)
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{
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this.logger = logger;
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this.text = text;
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}
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public void Initialize(ISystemKeyboardLayoutControl control)
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{
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this.control = control;
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originalLanguage = InputLanguage.CurrentInputLanguage;
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control.LayoutSelected += Control_LayoutSelected;
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control.SetTooltip(text.Get(TextKey.SystemControl_KeyboardLayoutTooltip));
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logger.Info($"Saved current keyboard layout {ToString(originalLanguage)}.");
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foreach (InputLanguage language in InputLanguage.InstalledInputLanguages)
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{
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var layout = new KeyboardLayoutDefinition
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{
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CultureCode = language.Culture.ThreeLetterISOLanguageName.ToUpper(),
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IsCurrent = originalLanguage.Equals(language),
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Language = language,
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Name = language.LayoutName
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};
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control.Add(layout);
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layouts.Add(layout);
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logger.Info($"Added keyboard layout {ToString(language)} to system control.");
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}
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}
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public void Terminate()
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{
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control?.Close();
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if (originalLanguage != null)
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{
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InputLanguage.CurrentInputLanguage = originalLanguage;
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logger.Info($"Restored original keyboard layout {ToString(originalLanguage)}.");
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}
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}
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private void Control_LayoutSelected(IKeyboardLayout layout)
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{
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var language = layouts.First(l => l.Id == layout.Id).Language;
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InputLanguage.CurrentInputLanguage = language;
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foreach (var l in layouts)
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{
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l.IsCurrent = l.Id == layout.Id;
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}
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logger.Info($"Changed keyboard layout to {ToString(language)}.");
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}
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private string ToString(InputLanguage language)
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{
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return $"'{language.LayoutName}' ({language.Culture.ThreeLetterISOLanguageName.ToUpper()})";
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}
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}
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}
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