public void GeckoListBox_TestAddItem()
{
IWritingSystemDefinition ws = WritingSystemDefinition.Parse("fr");
IWritingSystemDefinition ws2 = WritingSystemDefinition.Parse("en");
var listBox = new GeckoListBox();
listBox.FormWritingSystem = ws;
listBox.MeaningWritingSystem = ws2;
listBox.Name = "ControlUnderTest";
Assert.IsNotNull(listBox);
String volvo = "Volvo";
String saab = "Saab";
String toyota = "Toyota";
listBox.AddItem(volvo);
listBox.AddItem(saab);
listBox.AddItem(toyota);
Assert.AreSame(saab, listBox.GetItem(1));
Assert.AreSame(toyota, listBox.GetItem(2));
Assert.AreEqual(3, listBox.Length);
Assert.AreSame(ws2, listBox.MeaningWritingSystem);
listBox.Clear();
Assert.AreEqual(0, listBox.Length);
}
protected virtual void UpdateList()
{
int selectedIndex = _listBox.SelectedIndex;
_listBox.Clear();
_listBox.Font = Font;
_listBox.ItemHeight = _listBox.Font.Height;
int maxWidth = Width;
using (Graphics g = (_autoSizePopup) ? CreateGraphics() : null)
{
// Text.Trim() allows "1 " to trigger updating the list and matching "1 Universe", where
// the match involves "1" and "Universe" separately. (Note that "1 " does not match either
// "1" or "Universe".)
foreach (object item in ItemFilterer.Invoke(Text.Trim(), Items, ItemDisplayStringAdaptor))
{
string label = ItemDisplayStringAdaptor.GetDisplayLabel(item);
_listBox.AddItem(new ItemWrapper(item, label));
if (_autoSizePopup)
{
maxWidth = Math.Max(maxWidth, MeasureItem(g, label).Width);
}
}
}
_listBox.ListCompleted();
_listBox.SelectedIndex = selectedIndex;
if (_listBox.Items.Count == 0)
{
HideList();
}
else
{
int visItems = _listBox.Items.Count;
if (visItems > 8)
{
visItems = 8;
}
_listBox.Height = (visItems * _listBox.ItemHeight) + 4;
switch (BorderStyle)
{
case BorderStyle.FixedSingle:
{
_listBox.Height += 2;
break;
}
case BorderStyle.Fixed3D:
{
_listBox.Height += 4;
break;
}
}
if (_autoSizePopup)
{
bool hasScrollBar = visItems < _listBox.Items.Count;
_listBox.Width = maxWidth + (hasScrollBar ? 10 : 0);
// in theory this shouldn't be needed
}
_listBox.RightToLeft = RightToLeft;
}
}