protected override void OnKeyDown(KeyEventArgs e)
{
base.OnKeyDown(e);
if (e.Modifiers == Keys.None)
{
switch (e.KeyCode)
{
case Keys.Space:
case Keys.Return:
if (SelectedNode != null)
{
SelectedNode.Toggle();
}
break;
case Keys.Down:
SelectNext();
break;
case Keys.Left:
if (SelectedNode != null)
{
SelectedNode.Collapse();
}
break;
case Keys.Right:
if (SelectedNode != null)
{
SelectedNode.Expand();
}
break;
case Keys.Up:
SelectPrevious();
break;
case Keys.PageDown:
if (nodeList.Count > 0)
{
var lNodesOnScreen = nodesOnScreen;
var nextIndex = 0;
if (SelectedNode != null)
{
nextIndex = nodeList.IndexOf(SelectedNode);
}
nextIndex = MathHelper.Clamp(nextIndex + lNodesOnScreen, 0, nodeList.Count - 1);
SelectedNode = nodeList[nextIndex];
}
break;
case Keys.PageUp:
if (nodeList.Count > 0)
{
var lNodesOnScreen = nodesOnScreen;
var nextIndex = 0;
if (SelectedNode != null)
{
nextIndex = nodeList.IndexOf(SelectedNode);
}
nextIndex = MathHelper.Clamp(nextIndex - lNodesOnScreen, 0, nodeList.Count - 1);
SelectedNode = nodeList[nextIndex];
}
break;
case Keys.End:
if (nodeList.Count > 0)
{
SelectedNode = nodeList[nodeList.Count - 1];
}
break;
case Keys.Home:
if (nodeList.Count > 0)
{
SelectedNode = nodeList[0];
}
break;
}
}
else if (e.Control)
{
switch (e.KeyCode)
{
case Keys.Down:
if (uwfVScrollBar.Visible)
{
uwfVScrollBar.DoScroll(ScrollEventType.SmallIncrement);
}
break;
case Keys.Up:
if (uwfVScrollBar.Visible)
{
uwfVScrollBar.DoScroll(ScrollEventType.SmallDecrement);
}
break;
}
}
char c = KeyHelper.GetLastInputChar();
if (char.IsLetterOrDigit(c) || char.IsPunctuation(c))
{
filter += c;
resetFilterTime = 3; // sec.
SelectNodeWText(filter);
}
}
protected override void OnKeyDown(KeyEventArgs e)
{
base.OnKeyDown(e);
switch (e.KeyCode)
{
case Keys.Down:
SelectItem(SelectedIndexInternal + 1);
break;
case Keys.Left:
if (DropDownStyle == ComboBoxStyle.DropDownList)
{
SelectItem(SelectedIndexInternal - 1);
}
break;
case Keys.Right:
if (DropDownStyle == ComboBoxStyle.DropDownList)
{
SelectItem(SelectedIndexInternal + 1);
}
break;
case Keys.Up:
SelectItem(SelectedIndexInternal - 1);
break;
case Keys.PageDown:
SelectItem(SelectedIndexInternal + MaxDropDownItems);
break;
case Keys.PageUp:
SelectItem(SelectedIndexInternal - MaxDropDownItems);
break;
case Keys.Home:
SelectItem(0);
break;
case Keys.End:
SelectItem(Items.Count);
break;
case Keys.Return:
if (listBoxPanel != null && !listBoxPanel.Disposing && !listBoxPanel.IsDisposed)
{
listBoxPanel.listBox.SelectItem(listBoxPanel.listBox.SelectedIndex);
ApplySelectedItem();
}
break;
}
if (listBoxPanel != null && DropDownStyle == ComboBoxStyle.DropDownList)
{
// Filter with key input.
if (resetKeyFilter)
{
resetKeyFilter = false;
keyFilter = "";
}
char c = KeyHelper.GetLastInputChar();
if (char.IsLetterOrDigit(c) || char.IsPunctuation(c))
{
keyFilter += char.ToLower(c);
var itemIndex = listBoxPanel.listBox.FindItemIndex(x => x != null && x.ToString().ToLower().Contains(keyFilter));
if (itemIndex > -1)
{
listBoxPanel.listBox.SelectItem(itemIndex);
}
}
}
}
protected override void OnKeyDown(KeyEventArgs e)
{
base.OnKeyDown(e);
switch (e.KeyCode)
{
case Keys.Down:
case Keys.Right:
SelectItem(SelectedIndex + 1);
break;
case Keys.Left:
case Keys.Up:
SelectItem(SelectedIndex - 1);
break;
case Keys.PageDown:
SelectItem(SelectedIndex + visibleItemsCount - 1);
break;
case Keys.PageUp:
SelectItem(SelectedIndex - visibleItemsCount + 1);
break;
case Keys.Home:
SelectItem(0);
break;
case Keys.End:
SelectItem(Items.Count - 1);
break;
default:
// Key filter.
char c = KeyHelper.GetLastInputChar();
if (char.IsLetterOrDigit(c) || char.IsPunctuation(c))
{
keyFilter += char.ToLower(c);
var itemIndex = FindItemIndex(x =>
{
if (x == null)
{
return(false);
}
var xStr = x.ToString();
// ReSharper disable once ConditionIsAlwaysTrueOrFalse
return(xStr != null && xStr.ToLower().StartsWith(keyFilter));
});
SelectItem(itemIndex);
if (keyTimer == null)
{
keyTimer = new Timer();
keyTimer.Interval = keyFilterResetTime * 1000;
keyTimer.Tick += (sender, args) => ResetKeyFilter();
}
keyTimer.Stop();
keyTimer.Start();
}
break;
}
}
protected override void OnKeyDown(KeyEventArgs e)
{
base.OnKeyDown(e);
switch (e.KeyCode)
{
case Keys.Down:
{
if (Items.IsDisabled(selectedIndex + 1))
{
break;
}
if (listBox != null)
{
listBox.SelectedIndex++;
SelectedIndex = Items.FindIndex(x => x == listBox.SelectedItem);
listBox.EnsureVisible();
}
else if (selectedIndex + 1 < Items.Count)
{
SelectedIndex++;
}
}
break;
case Keys.Up:
{
if (Items.IsDisabled(selectedIndex - 1))
{
break;
}
if (listBox != null)
{
listBox.SelectedIndex--;
if (listBox.SelectedIndex < 0 && listBox.Items.Count > 0)
{
listBox.SelectedIndex = 0;
}
SelectedIndex = Items.FindIndex(x => x == listBox.SelectedItem);
listBox.EnsureVisible();
}
else if (selectedIndex > 0)
{
SelectedIndex--;
}
}
break;
case Keys.Return:
if (listBox != null && !listBox.Disposing && !listBox.IsDisposed)
{
listBox.SelectItem(listBox.SelectedIndex);
ApplySelectedItem();
}
break;
}
if (listBox != null && DropDownStyle == ComboBoxStyle.DropDownList)
{
if (keyFlag == true)
{
keyFlag = false;
filter = "";
}
char c = KeyHelper.GetLastInputChar();
if (char.IsLetterOrDigit(c) || char.IsPunctuation(c))
{
filter += char.ToLower(c);
var itemIndex = listBox.FindItemIndex(x => x != null && x.ToString().ToLower().Contains(filter));
if (itemIndex > -1)
{
listBox.SelectItem(itemIndex);
}
}
}
}
