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446 lines
21 KiB
C#
446 lines
21 KiB
C#
/* Copyright (c) Citrix Systems Inc.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms,
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* with or without modification, are permitted provided
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* that the following conditions are met:
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*
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* * Redistributions of source code must retain the above
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* copyright notice, this list of conditions and the
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* following disclaimer.
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* * Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the
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* following disclaimer in the documentation and/or other
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* materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
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* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
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* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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using System;
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using System.Collections.Generic;
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using System.Windows.Forms;
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using XenAdmin.Core;
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namespace XenAdmin.ConsoleView
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{
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public enum ConsoleShortcutKey
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{
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CTRL_ALT,
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CTRL_ALT_F,
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F12,
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CTRL_ENTER,
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ALT_SHIFT_U,
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F11,
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RIGHT_CTRL,
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LEFT_ALT,
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CTRL_ALT_INS
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}
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public class ConsoleKeyHandler
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{
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public const int CTRL_SCAN = 29;
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public const int ALT_SCAN = 56;
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public const int CTRL2_SCAN = 157;
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public const int ALT2_SCAN = 184;
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public const int GR_SCAN = 541;
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public const int DEL_SCAN = 211;
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public const int INS_SCAN = 210;
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public const int L_SHIFT_SCAN = 0x2A;
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public const int R_SHIFT_SCAN = 0x36;
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public const int F11_SCAN = 87;
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public const int F12_SCAN = 88;
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public const int F_SCAN = 33;
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public const int U_SCAN = 22;
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public const int ENTER_SCAN = 28;
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internal List<int> ModifierScans = new List<int>()
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{
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CTRL_SCAN,
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CTRL2_SCAN,
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L_SHIFT_SCAN,
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R_SHIFT_SCAN,
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ALT_SCAN,
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ALT2_SCAN,
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GR_SCAN
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};
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internal List<Keys> ModifierKeys = new List<Keys>()
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{
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Keys.ControlKey,
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Keys.RControlKey,
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Keys.LControlKey,
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Keys.ShiftKey,
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Keys.RShiftKey,
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Keys.LShiftKey,
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Keys.Menu,
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Keys.RMenu,
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Keys.LMenu
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};
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internal Dictionary<Set<int>, MethodInvoker> ExtraScans = new Dictionary<Set<int>, MethodInvoker>();
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internal Dictionary<Set<Keys>, MethodInvoker> ExtraKeys = new Dictionary<Set<Keys>, MethodInvoker>();
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internal void AddKeyHandler(ConsoleShortcutKey shortcutKey, MethodInvoker methodInvoker)
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{
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Program.AssertOnEventThread();
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switch (shortcutKey)
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{
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case ConsoleShortcutKey.CTRL_ALT:
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AddKeyHandler(new Set<Keys>(Keys.ControlKey, Keys.Menu), methodInvoker);
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AddKeyHandler(new Set<Keys>(Keys.LControlKey, Keys.LMenu), methodInvoker);
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AddKeyHandler(new Set<Keys>(Keys.LControlKey, Keys.RMenu), methodInvoker);
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AddKeyHandler(new Set<Keys>(Keys.RControlKey, Keys.LMenu), methodInvoker);
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AddKeyHandler(new Set<Keys>(Keys.RControlKey, Keys.RMenu), methodInvoker);
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AddKeyHandler(new Set<int>(CTRL_SCAN, ALT_SCAN), methodInvoker);
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AddKeyHandler(new Set<int>(CTRL2_SCAN, ALT2_SCAN), methodInvoker);
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AddKeyHandler(new Set<int>(CTRL2_SCAN, ALT2_SCAN, GR_SCAN), methodInvoker);
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AddKeyHandler(new Set<int>(CTRL2_SCAN, ALT_SCAN), methodInvoker);
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AddKeyHandler(new Set<int>(CTRL_SCAN, ALT2_SCAN), methodInvoker);
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AddKeyHandler(new Set<int>(CTRL_SCAN, ALT2_SCAN, GR_SCAN), methodInvoker);
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break;
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case ConsoleShortcutKey.CTRL_ALT_F:
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AddKeyHandler(new Set<Keys>(Keys.ControlKey, Keys.Menu, Keys.F), methodInvoker);
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AddKeyHandler(new Set<Keys>(Keys.LControlKey, Keys.LMenu, Keys.F), methodInvoker);
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AddKeyHandler(new Set<Keys>(Keys.LControlKey, Keys.RMenu, Keys.F), methodInvoker);
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AddKeyHandler(new Set<Keys>(Keys.RControlKey, Keys.LMenu, Keys.F), methodInvoker);
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AddKeyHandler(new Set<Keys>(Keys.RControlKey, Keys.RMenu, Keys.F), methodInvoker);
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AddKeyHandler(new Set<int>(CTRL_SCAN, ALT_SCAN, F_SCAN), methodInvoker);
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AddKeyHandler(new Set<int>(CTRL2_SCAN, ALT2_SCAN, F_SCAN), methodInvoker);
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AddKeyHandler(new Set<int>(CTRL2_SCAN, ALT2_SCAN, GR_SCAN, F_SCAN), methodInvoker);
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AddKeyHandler(new Set<int>(CTRL2_SCAN, ALT_SCAN, F_SCAN), methodInvoker);
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AddKeyHandler(new Set<int>(CTRL_SCAN, ALT2_SCAN, F_SCAN), methodInvoker);
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AddKeyHandler(new Set<int>(CTRL_SCAN, ALT2_SCAN, GR_SCAN, F_SCAN), methodInvoker);
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break;
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case ConsoleShortcutKey.F12:
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AddKeyHandler(new Set<Keys>(Keys.F12), methodInvoker);
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AddKeyHandler(new Set<int>(F12_SCAN), methodInvoker);
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break;
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case ConsoleShortcutKey.CTRL_ENTER:
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AddKeyHandler(new Set<Keys>(Keys.ControlKey, Keys.Enter), methodInvoker);
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AddKeyHandler(new Set<Keys>(Keys.LControlKey, Keys.Enter), methodInvoker);
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AddKeyHandler(new Set<Keys>(Keys.RControlKey, Keys.Enter), methodInvoker);
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AddKeyHandler(new Set<int>(CTRL_SCAN, ENTER_SCAN), methodInvoker);
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AddKeyHandler(new Set<int>(CTRL2_SCAN, ENTER_SCAN), methodInvoker);
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break;
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case ConsoleShortcutKey.ALT_SHIFT_U:
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AddKeyHandler(new Set<Keys>(Keys.Menu, Keys.ShiftKey, Keys.U), methodInvoker);
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AddKeyHandler(new Set<Keys>(Keys.LMenu, Keys.LShiftKey, Keys.U), methodInvoker);
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AddKeyHandler(new Set<Keys>(Keys.LMenu, Keys.RShiftKey, Keys.U), methodInvoker);
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AddKeyHandler(new Set<Keys>(Keys.RMenu, Keys.LShiftKey, Keys.U), methodInvoker);
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AddKeyHandler(new Set<Keys>(Keys.RMenu, Keys.RShiftKey, Keys.U), methodInvoker);
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AddKeyHandler(new Set<int>(ALT_SCAN, L_SHIFT_SCAN, U_SCAN), methodInvoker);
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AddKeyHandler(new Set<int>(ALT2_SCAN, L_SHIFT_SCAN, U_SCAN), methodInvoker);
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AddKeyHandler(new Set<int>(ALT_SCAN, R_SHIFT_SCAN, U_SCAN), methodInvoker);
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AddKeyHandler(new Set<int>(ALT2_SCAN, R_SHIFT_SCAN, U_SCAN), methodInvoker);
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AddKeyHandler(new Set<int>(ALT2_SCAN, R_SHIFT_SCAN, GR_SCAN, U_SCAN), methodInvoker);
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AddKeyHandler(new Set<int>(ALT2_SCAN, L_SHIFT_SCAN, GR_SCAN, U_SCAN), methodInvoker);
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break;
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case ConsoleShortcutKey.F11:
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AddKeyHandler(new Set<Keys>(Keys.F11), methodInvoker);
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AddKeyHandler(new Set<int>(F11_SCAN), methodInvoker);
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break;
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case ConsoleShortcutKey.RIGHT_CTRL:
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AddKeyHandler(new Set<Keys>(Keys.RControlKey), methodInvoker);
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AddKeyHandler(new Set<int>(CTRL2_SCAN), methodInvoker);
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break;
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case ConsoleShortcutKey.LEFT_ALT:
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AddKeyHandler(new Set<Keys>(Keys.LMenu), methodInvoker);
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AddKeyHandler(new Set<int>(ALT_SCAN), methodInvoker);
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break;
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case ConsoleShortcutKey.CTRL_ALT_INS:
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AddKeyHandler(new Set<Keys>(Keys.ControlKey, Keys.Menu, Keys.Insert), methodInvoker);
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AddKeyHandler(new Set<Keys>(Keys.LControlKey, Keys.LMenu, Keys.Insert), methodInvoker);
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AddKeyHandler(new Set<Keys>(Keys.LControlKey, Keys.RMenu, Keys.Insert), methodInvoker);
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AddKeyHandler(new Set<Keys>(Keys.RControlKey, Keys.LMenu, Keys.Insert), methodInvoker);
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AddKeyHandler(new Set<Keys>(Keys.RControlKey, Keys.RMenu, Keys.Insert), methodInvoker);
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AddKeyHandler(new Set<int>(CTRL_SCAN, ALT_SCAN, INS_SCAN), methodInvoker);
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AddKeyHandler(new Set<int>(CTRL2_SCAN, ALT2_SCAN, INS_SCAN), methodInvoker);
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AddKeyHandler(new Set<int>(CTRL2_SCAN, ALT2_SCAN, GR_SCAN, INS_SCAN), methodInvoker);
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AddKeyHandler(new Set<int>(CTRL_SCAN, ALT2_SCAN, INS_SCAN), methodInvoker);
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AddKeyHandler(new Set<int>(CTRL2_SCAN, ALT_SCAN, INS_SCAN), methodInvoker);
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AddKeyHandler(new Set<int>(CTRL_SCAN, ALT2_SCAN, GR_SCAN, INS_SCAN), methodInvoker);
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break;
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}
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}
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internal void AddKeyHandler(Set<Keys> keySet, MethodInvoker methodInvoker)
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{
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Program.AssertOnEventThread();
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if (ExtraKeys.ContainsKey(keySet))
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ExtraKeys.Remove(keySet);
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ExtraKeys.Add(keySet, methodInvoker);
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}
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internal void AddKeyHandler(Set<int> keySet, MethodInvoker methodInvoker)
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{
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Program.AssertOnEventThread();
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if (ExtraScans.ContainsKey(keySet))
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ExtraScans.Remove(keySet);
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ExtraScans.Add(keySet, methodInvoker);
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}
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internal void RemoveKeyHandler(ConsoleShortcutKey shortcutKey)
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{
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Program.AssertOnEventThread();
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switch (shortcutKey)
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{
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case ConsoleShortcutKey.CTRL_ALT:
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RemoveKeyHandler(new Set<Keys>(Keys.ControlKey, Keys.Menu));
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RemoveKeyHandler(new Set<Keys>(Keys.LControlKey, Keys.LMenu));
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RemoveKeyHandler(new Set<Keys>(Keys.LControlKey, Keys.RMenu));
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RemoveKeyHandler(new Set<Keys>(Keys.RControlKey, Keys.LMenu));
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RemoveKeyHandler(new Set<Keys>(Keys.RControlKey, Keys.RMenu));
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RemoveKeyHandler(new Set<int>(CTRL_SCAN, ALT_SCAN));
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RemoveKeyHandler(new Set<int>(CTRL2_SCAN, ALT2_SCAN));
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RemoveKeyHandler(new Set<int>(CTRL2_SCAN, ALT2_SCAN, GR_SCAN));
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RemoveKeyHandler(new Set<int>(CTRL2_SCAN, ALT_SCAN));
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RemoveKeyHandler(new Set<int>(CTRL_SCAN, ALT2_SCAN));
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RemoveKeyHandler(new Set<int>(CTRL_SCAN, ALT2_SCAN, GR_SCAN));
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break;
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case ConsoleShortcutKey.CTRL_ALT_F:
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RemoveKeyHandler(new Set<Keys>(Keys.ControlKey, Keys.Menu, Keys.F));
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RemoveKeyHandler(new Set<Keys>(Keys.LControlKey, Keys.LMenu, Keys.F));
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RemoveKeyHandler(new Set<Keys>(Keys.LControlKey, Keys.RMenu, Keys.F));
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RemoveKeyHandler(new Set<Keys>(Keys.RControlKey, Keys.LMenu, Keys.F));
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RemoveKeyHandler(new Set<Keys>(Keys.RControlKey, Keys.RMenu, Keys.F));
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RemoveKeyHandler(new Set<int>(CTRL_SCAN, ALT_SCAN, F_SCAN));
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RemoveKeyHandler(new Set<int>(CTRL2_SCAN, ALT2_SCAN, F_SCAN));
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RemoveKeyHandler(new Set<int>(CTRL2_SCAN, ALT2_SCAN, GR_SCAN, F_SCAN));
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RemoveKeyHandler(new Set<int>(CTRL2_SCAN, ALT_SCAN, F_SCAN));
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RemoveKeyHandler(new Set<int>(CTRL_SCAN, ALT2_SCAN, F_SCAN));
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RemoveKeyHandler(new Set<int>(CTRL_SCAN, ALT2_SCAN, GR_SCAN, F_SCAN));
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break;
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case ConsoleShortcutKey.F12:
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RemoveKeyHandler(new Set<Keys>(Keys.F12));
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RemoveKeyHandler(new Set<int>(F12_SCAN));
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break;
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case ConsoleShortcutKey.CTRL_ENTER:
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RemoveKeyHandler(new Set<Keys>(Keys.ControlKey, Keys.Enter));
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RemoveKeyHandler(new Set<Keys>(Keys.LControlKey, Keys.Enter));
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RemoveKeyHandler(new Set<Keys>(Keys.RControlKey, Keys.Enter));
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RemoveKeyHandler(new Set<int>(CTRL_SCAN, ENTER_SCAN));
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RemoveKeyHandler(new Set<int>(CTRL2_SCAN, ENTER_SCAN));
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break;
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case ConsoleShortcutKey.ALT_SHIFT_U:
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RemoveKeyHandler(new Set<Keys>(Keys.Menu, Keys.ShiftKey, Keys.U));
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RemoveKeyHandler(new Set<Keys>(Keys.LMenu, Keys.LShiftKey, Keys.U));
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RemoveKeyHandler(new Set<Keys>(Keys.LMenu, Keys.RShiftKey, Keys.U));
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RemoveKeyHandler(new Set<Keys>(Keys.RMenu, Keys.LShiftKey, Keys.U));
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RemoveKeyHandler(new Set<Keys>(Keys.RMenu, Keys.RShiftKey, Keys.U));
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RemoveKeyHandler(new Set<int>(ALT_SCAN, L_SHIFT_SCAN, U_SCAN));
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RemoveKeyHandler(new Set<int>(ALT2_SCAN, L_SHIFT_SCAN, U_SCAN));
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RemoveKeyHandler(new Set<int>(ALT_SCAN, R_SHIFT_SCAN, U_SCAN));
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RemoveKeyHandler(new Set<int>(ALT2_SCAN, R_SHIFT_SCAN, U_SCAN));
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RemoveKeyHandler(new Set<int>(ALT2_SCAN, R_SHIFT_SCAN, GR_SCAN, U_SCAN));
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RemoveKeyHandler(new Set<int>(ALT2_SCAN, L_SHIFT_SCAN, GR_SCAN, U_SCAN));
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break;
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case ConsoleShortcutKey.F11:
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RemoveKeyHandler(new Set<Keys>(Keys.F11));
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RemoveKeyHandler(new Set<int>(F11_SCAN));
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break;
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case ConsoleShortcutKey.RIGHT_CTRL:
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RemoveKeyHandler(new Set<Keys>(Keys.RControlKey));
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RemoveKeyHandler(new Set<int>(CTRL2_SCAN));
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break;
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case ConsoleShortcutKey.LEFT_ALT:
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RemoveKeyHandler(new Set<Keys>(Keys.LMenu));
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RemoveKeyHandler(new Set<int>(ALT_SCAN));
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break;
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case ConsoleShortcutKey.CTRL_ALT_INS:
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RemoveKeyHandler(new Set<Keys>(Keys.ControlKey, Keys.Menu, Keys.Insert));
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RemoveKeyHandler(new Set<Keys>(Keys.LControlKey, Keys.LMenu, Keys.Insert));
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RemoveKeyHandler(new Set<Keys>(Keys.LControlKey, Keys.RMenu, Keys.Insert));
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RemoveKeyHandler(new Set<Keys>(Keys.RControlKey, Keys.LMenu, Keys.Insert));
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RemoveKeyHandler(new Set<Keys>(Keys.RControlKey, Keys.RMenu, Keys.Insert));
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RemoveKeyHandler(new Set<int>(CTRL_SCAN, ALT_SCAN, INS_SCAN));
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RemoveKeyHandler(new Set<int>(CTRL2_SCAN, ALT2_SCAN, INS_SCAN));
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RemoveKeyHandler(new Set<int>(CTRL2_SCAN, ALT2_SCAN, GR_SCAN, INS_SCAN));
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RemoveKeyHandler(new Set<int>(CTRL_SCAN, ALT2_SCAN, INS_SCAN));
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RemoveKeyHandler(new Set<int>(CTRL2_SCAN, ALT_SCAN, INS_SCAN));
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RemoveKeyHandler(new Set<int>(CTRL_SCAN, ALT2_SCAN, GR_SCAN, INS_SCAN));
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break;
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}
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}
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internal void RemoveKeyHandler(Set<Keys> keySet)
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{
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Program.AssertOnEventThread();
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if (ExtraKeys.ContainsKey(keySet))
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ExtraKeys.Remove(keySet);
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}
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internal void RemoveKeyHandler(Set<int> keySet)
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{
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Program.AssertOnEventThread();
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if (ExtraScans.ContainsKey(keySet))
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ExtraScans.Remove(keySet);
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}
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/// <summary>
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/// Generic function to handle key tracking and event firing
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/// </summary>
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/// <typeparam name="T">either int or Keys</typeparam>
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/// <param name="pressed"></param>
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/// <param name="depressed"></param>
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/// <param name="methods"></param>
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/// <param name="key"></param>
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/// <param name="modifierKeyPressedAlone"></param>
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/// <param name="modifierKeys"></param>
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/// <returns>Handled or not</returns>
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public bool handleExtras<T>(bool pressed, Set<T> depressed, Dictionary<Set<T>, MethodInvoker> methods, T key, List<T> modifierKeys, ref bool modifierKeyPressedAlone) where T : IComparable
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{
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if (pressed)
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{
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depressed.Add(key);
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if (modifierKeyPressedAlone)
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modifierKeyPressedAlone = false;
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}
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else
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{
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if (modifierKeyPressedAlone && methods.ContainsKey(depressed) && depressed.Count == 1)
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{
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methods[depressed]();
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depressed.Clear();
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return true;
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}
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depressed.Remove(key);
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}
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if (pressed && methods.ContainsKey(depressed))
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{
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if (depressed.Count == 1 && modifierKeys.Contains(key)) //single modifier keys are processed when the key is released
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{
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modifierKeyPressedAlone = true;
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}
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else
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{
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methods[depressed]();
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return true;
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}
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}
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return false;
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}
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internal static Keys TranslateKeyMessage(Message msg)
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{
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// Determine the virtual key code.
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int virtualKeyCode = (int)msg.WParam;
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// Determine whether the key is an extended key, e.g. a right hand Alt, Ctrl or Shift.
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int lParam = (int)msg.LParam;
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bool extended = (lParam & (1 << 24)) != 0;
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// Left Alt or Right Alt
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if (virtualKeyCode == 18)
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return extended ? Keys.RMenu : Keys.LMenu;
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// Left Ctrl or Right Ctrl
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if (virtualKeyCode == 17)
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return extended ? Keys.RControlKey : Keys.LControlKey;
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// Left Shift or Right Shift
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if (virtualKeyCode == 16)
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return extended ? Keys.RShiftKey : Keys.LShiftKey;
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// Default
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return (Keys)msg.WParam;
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}
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/// <summary>
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/// Given a modifier key (Ctrl, Shift or Alt), it builds a list of extended (Left and Right) keys.
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/// For example, if ControlKey is passed in, the result will be [RControlKey, LControlKey].
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/// </summary>
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/// <param name="key"></param>
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/// <returns></returns>
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internal static List<Keys> GetExtendedKeys(Keys key)
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{
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List<Keys> list = new List<Keys>();
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if (key == Keys.ControlKey)
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{
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list.Add(Keys.RControlKey);
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list.Add(Keys.LControlKey);
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}
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if (key == Keys.ShiftKey)
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{
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list.Add(Keys.RShiftKey);
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list.Add(Keys.LShiftKey);
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}
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if (key == Keys.Menu)
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{
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list.Add(Keys.RMenu);
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list.Add(Keys.LMenu);
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}
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return list;
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}
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/// <summary>
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/// Translates Left and Right modifier keys into simple keys, like ControlKey, ShiftKey and Menu.
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/// </summary>
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/// <param name="key"></param>
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/// <returns></returns>
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internal static Keys GetSimpleKey(Keys key)
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{
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switch (key)
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{
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case Keys.LControlKey:
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case Keys.RControlKey:
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return Keys.ControlKey;
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case Keys.LShiftKey:
|
|
case Keys.RShiftKey:
|
|
return Keys.ShiftKey;
|
|
case Keys.LMenu:
|
|
case Keys.RMenu:
|
|
return Keys.Menu;
|
|
default:
|
|
return key;
|
|
}
|
|
}
|
|
}
|
|
}
|