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/*
KeePass Password Safe - The Open-Source Password Manager
Copyright (C) 2003-2024 Dominik Reichl <dominik.reichl@t-online.de>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Diagnostics;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using KeePass.App;
using KeePass.Resources;
namespace KeePass.UI
{
public sealed class HotKeyControlEx : TextBox
{
private readonly Color m_clrNormalBack;
private readonly Keys[] m_vModKeys = new Keys[] {
Keys.ControlKey, Keys.RControlKey, Keys.Menu, Keys.RMenu,
Keys.ShiftKey, Keys.RShiftKey
};
private Keys m_k = Keys.None;
[Browsable(false)]
[DefaultValue(Keys.None)]
[DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
public Keys HotKey
{
get { return m_k; }
set { m_k = FixHotKey(value); UpdateUI(m_k, m_k); }
}
public bool ShouldSerializeHotKey() { return false; }
private string m_strTextNone = (Program.DesignMode ? string.Empty : KPRes.None);
[Browsable(false)]
[DefaultValue("")]
[DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
public string TextNone
{
get { return m_strTextNone; }
set
{
if(value == null) throw new ArgumentNullException("value");
m_strTextNone = value;
UpdateUI(m_k, m_k);
}
}
public bool ShouldSerializeTextNone() { return false; }
public HotKeyControlEx()
{
m_clrNormalBack = this.BackColor;
if(Program.DesignMode) return;
this.ContextMenuStrip = new ContextMenuStrip(); // No context menu
UpdateUI(m_k, m_k); // Initialize text
}
protected override void OnKeyDown(KeyEventArgs e)
{
// base.OnKeyDown(e);
UIUtil.SetHandled(e, true);
m_k = FixHotKey(e.KeyData);
UpdateUI(e.KeyData, m_k);
}
protected override void OnKeyUp(KeyEventArgs e)
{
// base.OnKeyUp(e);
UIUtil.SetHandled(e, true);
if(Control.ModifierKeys == Keys.None)
UpdateUI(m_k, m_k); // Clear 'Invalid' when releasing all modifiers
}
protected override void OnKeyPress(KeyPressEventArgs e)
{
// base.OnKeyPress(e);
e.Handled = true;
}
protected override void OnLostFocus(EventArgs e)
{
UpdateUI(m_k, m_k); // For Shift+Tab, ...
base.OnLostFocus(e);
}
private Keys FixHotKey(Keys kUser)
{
Keys k = (kUser & Keys.KeyCode);
Keys kMod = (kUser & (Keys.Control | Keys.Alt | Keys.Shift)); // Others unsupported
if(Array.IndexOf<Keys>(m_vModKeys, k) >= 0) return Keys.None;
Keys[] vInv = new Keys[] {
Keys.None, Keys.Escape, Keys.Tab, Keys.CapsLock,
Keys.LWin, Keys.RWin, Keys.Return,
Keys.F12, // Reserved for debugger, see RegisterHotKey API function
Keys.Scroll, Keys.NumLock
};
if(Array.IndexOf<Keys>(vInv, k) >= 0) return Keys.None;
if((kMod == Keys.None) || (kMod == Keys.Shift))
{
if((k < Keys.F1) || (k > Keys.F24)) return Keys.None;
}
else if(kMod == Keys.Control)
{
if((k == Keys.Back) || (k == Keys.Insert) || (k == Keys.Delete))
return Keys.None;
}
else if(kMod == (Keys.Control | Keys.Alt))
{
if((k >= Keys.D0) && (k <= Keys.D9)) return Keys.None;
}
return (kMod | k);
}
private void UpdateUI(Keys kUser, Keys kFixed)
{
if(Program.DesignMode) return;
try
{
Keys kUC = (kUser & Keys.KeyCode);
string strText = string.Empty;
bool bInvalid = false;
if(kUser == Keys.None)
strText = m_strTextNone;
else if(kUser == kFixed)
strText = UIUtil.GetKeysName(kFixed);
else
{
if((kUC == Keys.None) || (Array.IndexOf<Keys>(m_vModKeys, kUC) >= 0))
strText = UIUtil.GetKeysName(kUser & Keys.Modifiers) + "+";
else if(kFixed == Keys.None)
{
strText = KPRes.Invalid;
bInvalid = true;
}
else strText = UIUtil.GetKeysName(kFixed);
}
if(UIUtil.ColorsEqual(m_clrNormalBack, Color.White))
this.BackColor = (bInvalid ? AppDefs.ColorEditError : m_clrNormalBack);
if(strText != this.Text) // Avoid flicker
{
this.Text = strText;
Select(strText.Length, 0);
}
}
catch(Exception) { Debug.Assert(false); }
}
}
}
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