/// <summary>
/// Like FocusNextCompletion but focuses the previous completion.
/// </summary>
/// <param name="stackPanel"></param>
public static void FocusPreviousCompletion(StackPanel stackPanel, TextBox textBox)
{
for (int i = 0; i < stackPanel.Children.Count; i++)
{
TextBlock child = (stackPanel.Children[i] as TextBlock);
if (child.IsFocused && stackPanel.Children.Count > 1 && i - 1 > -1)
{
AutoCompleteResult toFocus = (stackPanel.Children[i] as AutoCompleteResult);
AutoCompleteResult takeTextFrom = (stackPanel.Children[i - 1] as AutoCompleteResult);
toFocus.Focus();
textBox.Text = (takeTextFrom.Text);
return;
}
}
}
/// <summary>
/// Focuses the completion below the current completion, or the first completion if none is selected.
/// </summary>
/// <param name="stackPanel">The StackPanel holding the autocompletions</param>
/// <param name="textBox">The destination text box that the autocomplete will complete.</param>
public static void FocusNextCompletion(StackPanel stackPanel, TextBox textBox)
{
for (int i = 0; i < stackPanel.Children.Count; i++)
{
AutoCompleteResult child = (stackPanel.Children[i] as AutoCompleteResult);
if (child.IsFocused && stackPanel.Children.Count > 1 && i + 1 < stackPanel.Children.Count)
{
textBox.Text = (stackPanel.Children[i + 1] as AutoCompleteResult).Text;
return;
}
}
if (stackPanel.Children.Count > 0)
{
AutoCompleteResult destination = stackPanel.Children[0] as AutoCompleteResult;
destination.Focus();
textBox.Text = destination.Text;
}
}
public static AutoCompleteResult Generate(string text, StackPanel stackPanel, TextBox textBox)
{
AutoCompleteResult final = new AutoCompleteResult
{
// Add the text
Text = text,
// A little style...
Margin = new Thickness(2, 3, 2, 3),
Cursor = Cursors.Hand,
Focusable = true
};
// Mouse events
final.MouseLeftButtonUp += (sender, e) =>
{
textBox.Text = (sender as TextBlock).Text;
AutoComplete.Close(stackPanel);
};
final.MouseEnter += (sender, e) =>
{
//TextBlock b = sender as TextBlock;
//b.Background = System.Windows.Media.Brushes.LightSkyBlue;
final.IsSelected = true;
};
final.MouseLeave += (sender, e) =>
{
final.IsSelected = false;
};
final.LostFocus += (sender, e) =>
{
final.IsSelected = false;
};
final.GotFocus += (sender, e) =>
{
final.IsSelected = true;
};
final.PreviewKeyDown += (sender, e) =>
{
switch (e.Key)
{
case Key.Down:
AutoComplete.FocusNextCompletion(stackPanel, textBox);
return;
case Key.Up:
AutoComplete.FocusPreviousCompletion(stackPanel, textBox);
return;
case Key.Escape:
AutoComplete.Close(stackPanel);
return;
default:
return;
}
};
//final.LostFocus += (sender, e) =>
//{
// final.IsSelected = false;
//};
return final;
}
/// <summary>
/// Adds item to the stack panel.
/// </summary>
/// <param name="text"></param>
/// <param name="stackPanel"></param>
/// <param name="textBox"></param>
public static void AddItemToStack(string text, StackPanel stackPanel, TextBox textBox)
{
stackPanel.Children.Add(AutoCompleteResult.Generate(text, stackPanel, textBox));
}