public override bool OnKeyDown(Keys keyData)
{
KeyEventArgs e = new KeyEventArgs(keyData);
if (e.KeyCode != Keys.Up && e.KeyCode != Keys.Prior && e.KeyCode != Keys.Down && e.KeyCode != Keys.Next && !this.ownerDropDownListElement.ContainsFocus)
{
this.ownerDropDownListElement.OnKeyDown(e);
if (e.Handled)
{
return(false);
}
}
this.lastPressedKey = new Keys?(keyData);
switch (keyData)
{
case Keys.Back:
return(false);
case Keys.Tab:
this.GetMainDropDownListElement().ClosePopup(RadPopupCloseReason.Keyboard);
if (this.ownerDropDownListElement.isSuggestMode)
{
this.ownerDropDownListElement.ClosePopup(RadPopupCloseReason.Keyboard);
}
return(false);
default:
RadListElement listElement = this.OwnerDropDownListElement.ListElement;
bool flag = this.OwnerDropDownListElement.MaxDropDownItems == 1;
if (listElement.ReadOnly)
{
return(false);
}
if (keyData == Keys.Home)
{
listElement.SelectedItem = this.OwnerDropDownListElement.Items.First;
}
if (keyData == Keys.End)
{
listElement.SelectedItem = this.OwnerDropDownListElement.Items.Last;
}
if (keyData == Keys.Up && listElement.Items.Count > 0)
{
if (listElement.SelectedIndex > 0)
{
--listElement.SelectedIndex;
if (flag)
{
listElement.Scroller.ScrollToItem(listElement.SelectedItem);
}
}
return(true);
}
if (keyData == Keys.Down && listElement.Items.Count > 0)
{
if (listElement.SelectedIndex < listElement.Items.Count - 1)
{
++listElement.SelectedIndex;
if (flag)
{
listElement.Scroller.ScrollToItem(listElement.SelectedItem);
}
}
return(true);
}
if (keyData == Keys.Prior)
{
listElement.ScrollByPage(-1);
}
if (keyData == Keys.Next)
{
listElement.ScrollByPage(1);
}
if (keyData != Keys.Return)
{
return(base.OnKeyDown(keyData));
}
RadListDataItem selectedOrHoveredItem = this.GetSelectedOrHoveredItem();
if (selectedOrHoveredItem != null)
{
this.ownerDropDownListElement.SelectedIndex = selectedOrHoveredItem.RowIndex;
this.ownerDropDownListElement.ClosePopup(RadPopupCloseReason.Keyboard);
}
else
{
RadDropDownListElement dropDownListElement = this.GetMainDropDownListElement();
if (dropDownListElement != null)
{
string text = dropDownListElement.TextBox.Text;
dropDownListElement.SelectItemFromText(text);
dropDownListElement.ClosePopup(RadPopupCloseReason.Keyboard);
}
}
if (keyData == Keys.Return && this.ownerDropDownListElement.isSuggestMode)
{
this.GetMainDropDownListElement()?.ClosePopup(RadPopupCloseReason.Keyboard);
}
return(base.OnKeyDown(keyData));
}
}
public override bool OnKeyDown(Keys keyData)
{
if (keyData == Keys.Tab)
{
RadDropDownListElement mainDropDown = this.GetMainDropDownListElement();
Debug.Assert(mainDropDown != null);
mainDropDown.ClosePopup(RadPopupCloseReason.Keyboard);
if (this.ownerDropDownListElement.isSuggestMode)
{
this.ownerDropDownListElement.ClosePopup(RadPopupCloseReason.Keyboard);
}
return(false);
}
if (keyData == Keys.Back)
{
return(false);
}
RadListElement listElement = this.OwnerDropDownListElement.ListElement;
if (keyData == Keys.Home)
{
listElement.SelectedItem = this.OwnerDropDownListElement.Items.First;
}
if (keyData == Keys.End)
{
listElement.SelectedItem = this.OwnerDropDownListElement.Items.Last;
}
if (keyData == Keys.PageUp)
{
listElement.ScrollByPage(-1);
}
if (keyData == Keys.PageDown)
{
listElement.ScrollByPage(1);
}
if (keyData != Keys.Enter)
{
return(base.OnKeyDown(keyData));
}
RadListDataItem hoveredItem = this.GetSelectedOrHoveredItem();
if (hoveredItem != null)
{
int indexOfHoveredItem = hoveredItem.RowIndex;
this.ownerDropDownListElement.SelectedIndex = indexOfHoveredItem;
this.ownerDropDownListElement.ClosePopup(RadPopupCloseReason.Keyboard);
}
else
{
RadDropDownListElement owner = this.GetMainDropDownListElement();
string text = owner.TextBox.Text;
owner.SelectItemFromText(text);
owner.ClosePopup(RadPopupCloseReason.Keyboard);
}
bool baseResult = base.OnKeyDown(keyData);
return(baseResult);
}
