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/*
KeePass Password Safe - The Open-Source Password Manager
Copyright (C) 2003-2012 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.Text;
using System.Windows.Forms;
using System.Threading;
using System.Diagnostics;
using KeePass.Native;
using KeePass.Util;
namespace KeePass.UI
{
public sealed class CustomListViewEx : ListView
{
public CustomListViewEx() : base()
{
try { this.DoubleBuffered = true; }
catch(Exception) { Debug.Assert(false); }
}
/* private Color m_clrPrev = Color.Black;
private Point m_ptLast = new Point(-1, -1);
protected override void OnMouseHover(EventArgs e)
{
if((m_ptLast.X >= 0) && (m_ptLast.X < this.Columns.Count) &&
(m_ptLast.Y >= 0) && (m_ptLast.Y < this.Items.Count))
{
this.Items[m_ptLast.Y].SubItems[m_ptLast.X].ForeColor = m_clrPrev;
}
ListViewHitTestInfo lh = this.HitTest(this.PointToClient(Cursor.Position));
if((lh.Item != null) && (lh.SubItem != null))
{
m_ptLast = new Point(lh.Item.SubItems.IndexOf(lh.SubItem),
lh.Item.Index);
m_clrPrev = lh.SubItem.ForeColor;
lh.SubItem.ForeColor = Color.LightBlue;
}
base.OnMouseHover(e);
} */
/* protected override void OnKeyUp(KeyEventArgs e)
{
base.OnKeyUp(e);
UnfocusGroupInSingleMode();
}
private void UnfocusGroupInSingleMode()
{
try
{
if(!WinUtil.IsAtLeastWindowsVista) return;
if(KeePassLib.Native.NativeLib.IsUnix()) return;
if(!this.ShowGroups) return;
if(this.MultiSelect) return;
const uint m = (NativeMethods.LVGS_FOCUSED | NativeMethods.LVGS_SELECTED);
uint uGroups = (uint)this.Groups.Count;
for(uint u = 0; u < uGroups; ++u)
{
int iGroupID;
if(NativeMethods.GetGroupStateByIndex(this, u, m,
out iGroupID) == m)
{
NativeMethods.SetGroupState(this, iGroupID, m,
NativeMethods.LVGS_SELECTED);
return;
}
}
}
catch(Exception) { Debug.Assert(false); }
} */
protected override void OnKeyDown(KeyEventArgs e)
{
try { if(SkipGroupHeaderIfRequired(e)) return; }
catch(Exception) { Debug.Assert(false); }
base.OnKeyDown(e);
}
private bool SkipGroupHeaderIfRequired(KeyEventArgs e)
{
if(!this.ShowGroups) return false;
if(this.MultiSelect) return false;
ListViewItem lvi = this.FocusedItem;
if(lvi != null)
{
ListViewGroup g = lvi.Group;
ListViewItem lviChangeTo = null;
if((e.KeyCode == Keys.Up) && IsFirstLastItemInGroup(g, lvi, true))
lviChangeTo = (GetNextLvi(g, true) ?? lvi); // '??' for top item
else if((e.KeyCode == Keys.Down) && IsFirstLastItemInGroup(g, lvi, false))
lviChangeTo = (GetNextLvi(g, false) ?? lvi); // '??' for bottom item
if(lviChangeTo != null)
{
foreach(ListViewItem lviEnum in this.Items)
lviEnum.Selected = false;
EnsureVisible(lviChangeTo.Index);
UIUtil.SetFocusedItem(this, lviChangeTo, true);
e.Handled = true;
return true;
}
}
return false;
}
private static bool IsFirstLastItemInGroup(ListViewGroup g,
ListViewItem lvi, bool bFirst)
{
if(g == null) { Debug.Assert(false); return false; }
ListViewItemCollection c = g.Items;
if(c.Count == 0) { Debug.Assert(false); return false; }
return (bFirst ? (c[0] == lvi) : (c[c.Count - 1] == lvi));
}
private ListViewItem GetNextLvi(ListViewGroup gBaseExcl, bool bUp)
{
if(gBaseExcl == null) { Debug.Assert(false); return null; }
int i = this.Groups.IndexOf(gBaseExcl);
if(i < 0) { Debug.Assert(false); return null; }
if(bUp)
{
--i;
while(i >= 0)
{
ListViewGroup g = this.Groups[i];
if(g.Items.Count > 0) return g.Items[g.Items.Count - 1];
--i;
}
}
else // Down
{
++i;
int nGroups = this.Groups.Count;
while(i < nGroups)
{
ListViewGroup g = this.Groups[i];
if(g.Items.Count > 0) return g.Items[0];
++i;
}
}
return null;
}
}
}
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