/// <summary>
/// 双击项时显示编辑框
/// </summary>
private void LBox_DoubleClick(object sender, EventArgs e)
{
if (LBox.Items.Count != 0)
{
int itemSelected = LBox.SelectedIndex;
string itemText = LBox.Items[itemSelected].ToString();
Rectangle rect = LBox.GetItemRectangle(itemSelected);
txtEdit.Parent = LBox;
txtEdit.Bounds = rect;
txtEdit.Multiline = true;
txtEdit.Visible = true;
txtEdit.Text = itemText;
txtEdit.Focus();
txtEdit.SelectAll();
}
}
private void txt_PreviewKeyDown(object sender, KeyEventArgs e)
{
RichTextBox R = sender as RichTextBox;
var position = R.CaretPosition.GetCharacterRect(LogicalDirection.Forward);
if (LBox != null)
{
LBox.SetValue(Canvas.LeftProperty, position.X);
LBox.SetValue(Canvas.TopProperty, position.Y + 25);
}
switch (e.Key)
{
case Key.Space:
showlist();
e.Handled = true;
// LBox.Focus();
break;
case Key.Up:
if (LBox.Visibility == Visibility.Visible)
{
LBox.SelectedIndex = (LBox.SelectedIndex < 1) ? 0 : LBox.SelectedIndex - 1;
}
e.Handled = true;
break;
case Key.Down:
if (LBox.Visibility == Visibility.Visible)
{
LBox.SelectedIndex = (LBox.Items.Count == LBox.SelectedIndex + 1) ? LBox.Items.Count - 1 : LBox.SelectedIndex + 1;
}
e.Handled = true;
break;
//LBox.Focus();
case Key.Enter:
if (MyStructureString.IsComplete)
{
myParagraph = new Paragraph();
txt.Document.Blocks.Add(myParagraph);
MyStructureString.Clear();
//txt.CaretPosition = txt.CaretPosition.DocumentEnd;
e.Handled = true;
}
else
{
e.Handled = true;
}
break;
case Key.Tab:
if (LBox.SelectedIndex >= 0)
{
MyStructureString.Append(LBox.SelectedItem.ToString().TrimEnd());
myParagraph.Inlines.Clear();
myParagraph.Inlines.AddRange(MyStructureString.Spans);
txt.CaretPosition = txt.CaretPosition.DocumentEnd;
LBox.SelectedItem = null;
// txt.Focus();
LBox.Visibility = Visibility.Hidden;
// txt.Focus();
}
e.Handled = true;
break;
case Key.Escape:
LBox.Visibility = Visibility.Hidden;
break;
case Key.Back:
LBox.Visibility = Visibility.Hidden;
e.Handled = true;
string cur = (new TextRange(txt.Document.ContentStart, txt.Document.ContentEnd).Text).TrimEnd();
if (cur != string.Empty)
{
cur = cur.Substring(0, cur.Length - 1);
MyStructureString.Clear();
MyStructureString.Append(cur);
myParagraph.Inlines.Clear();
myParagraph.Inlines.AddRange(MyStructureString.Spans);
txt.CaretPosition = txt.CaretPosition.DocumentEnd;
}
break;
default:
//txt.Focus();
showlist();
e.Handled = true;
break;
}
//e.Handled = true;
}
