93 lines
2.6 KiB
C#
93 lines
2.6 KiB
C#
/*
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* Copyright (c) 2024 ETH Zürich, IT Services
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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.Windows.Forms;
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using CefSharp;
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using SafeExamBrowser.Browser.Contracts.Events;
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using SafeExamBrowser.UserInterface.Contracts;
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namespace SafeExamBrowser.Browser.Handlers
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{
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internal class KeyboardHandler : IKeyboardHandler
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{
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internal event ActionRequestedEventHandler FindRequested;
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internal event ActionRequestedEventHandler HomeNavigationRequested;
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internal event ActionRequestedEventHandler ReloadRequested;
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internal event ActionRequestedEventHandler ZoomInRequested;
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internal event ActionRequestedEventHandler ZoomOutRequested;
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internal event ActionRequestedEventHandler ZoomResetRequested;
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internal event ActionRequestedEventHandler FocusAddressBarRequested;
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internal event TabPressedEventHandler TabPressed;
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private int? currentKeyDown = null;
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public bool OnKeyEvent(IWebBrowser browserControl, IBrowser browser, KeyType type, int keyCode, int nativeKeyCode, CefEventFlags modifiers, bool isSystemKey)
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{
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var ctrl = modifiers.HasFlag(CefEventFlags.ControlDown);
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var shift = modifiers.HasFlag(CefEventFlags.ShiftDown);
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if (type == KeyType.KeyUp)
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{
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if (ctrl && keyCode == (int) Keys.F)
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{
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FindRequested?.Invoke();
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}
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if (keyCode == (int) Keys.Home)
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{
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HomeNavigationRequested?.Invoke();
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}
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if (ctrl && keyCode == (int) Keys.L)
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{
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FocusAddressBarRequested?.Invoke();
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}
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if ((ctrl && keyCode == (int) Keys.Add) || (ctrl && keyCode == (int) Keys.Oemplus) || (ctrl && shift && keyCode == (int) Keys.D1))
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{
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ZoomInRequested?.Invoke();
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}
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if (ctrl && (keyCode == (int) Keys.Subtract || keyCode == (int) Keys.OemMinus))
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{
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ZoomOutRequested?.Invoke();
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}
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if (ctrl && (keyCode == (int) Keys.D0 || keyCode == (int) Keys.NumPad0))
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{
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ZoomResetRequested?.Invoke();
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}
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if (keyCode == (int) Keys.Tab && keyCode == currentKeyDown)
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{
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TabPressed?.Invoke(shift);
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}
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}
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currentKeyDown = null;
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return false;
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}
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public bool OnPreKeyEvent(IWebBrowser browserControl, IBrowser browser, KeyType type, int keyCode, int nativeKeyCode, CefEventFlags modifiers, bool isSystemKey, ref bool isKeyboardShortcut)
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{
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if (type == KeyType.KeyUp && keyCode == (int) Keys.F5)
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{
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ReloadRequested?.Invoke();
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return true;
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}
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if (type == KeyType.RawKeyDown || type == KeyType.KeyDown)
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{
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currentKeyDown = keyCode;
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}
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return false;
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}
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}
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}
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