/// <summary>
/// A list box with a textbox as the drop down text, a button for the toggle,
/// and some text to display the currently selected line.
/// </summary>
/// <param name="dropDownIcon">The icon to use to the right of the text for displaying the textbox.</param>
/// <param name="scrollTexture">The icon to use for the scroll bar.</param>
/// <param name="font">The font to use for both the textbox and the text.</param>
/// <param name="items">The items to place in the textbox.</param>
/// <param name="selectedLine">The default selected line for the textbox.</param>
public ListBox(Texture dropDownIcon, Texture scrollTexture, BMFont font, string[] items, int selectedLine = 0)
{
this.items = items;
this.dropDownToggle = new Button(dropDownIcon);
this.dropDownToggle.RelativeTo = Corner.TopRight;
this.dropDownToggle.Position = new Point(0, (this.Size.Y - this.dropDownToggle.Size.Y) / 2);
this.AddElement(dropDownToggle);
this.dropDownBox = new TextBox(font, scrollTexture, selectedLine);
foreach (var item in items)
{
dropDownBox.WriteLine(item);
}
dropDownBox.CurrentLine = 0;
this.dropDownBox.AllowSelection = true;
dropDownToggle.OnMouseClick = new OnMouse((o, e) =>
{
dropDownVisible = !dropDownVisible;
if (dropDownVisible)
{
Parent.AddElement(dropDownBox);
dropDownBox.AllowScrollBar = (items.Length > 4);
}
else
{
Parent.RemoveElement(dropDownBox);
dropDownBox.AllowScrollBar = false;
}
});
dropDownBox.OnSelectionChanged = new OnMouse((o, e) => text.String = dropDownBox.SelectedLineText);
dropDownToggle.OnLoseFocus = new OnFocus(OnLoseFocusInternal);
dropDownBox.OnLoseFocus = new OnFocus(OnLoseFocusInternal);
this.OnLoseFocus = new OnFocus(OnLoseFocusInternal);
// need to wait until after dropDownBox is initialized
this.Font = font;
this.SelectedLine = selectedLine;
this.AddElement(text);
}
private void BuildVAOs()
{
// we're about the replace the VAO objects, so clear them first
for (int i = 0; i < vaos.Count; i++)
{
vaos[i].Dispose();
vaos[i] = null;
}
vaos.Clear();
// check if we should show the scrollbar
if (lines.Count > MaximumLines && allowScrollBar && scrollBar != null)
{
if (scrollBar.Name == null || !UserInterface.Elements.ContainsKey(scrollBar.Name))
{
Parent.AddElement(scrollBar);
}
}
else if (Parent != null && scrollBar != null)
{
Parent.RemoveElement(scrollBar);
}
// now build the VAO objects
for (int i = CurrentLine; i <= MaximumLines + CurrentLine; i++)
{
if (i >= lines.Count || i < 0)
{
break;
}
if (lines[i].Count == 0)
{
continue;
}
var current = lines[i][0];
string contents = "";
for (int j = 0; j < lines[i].Count; j++)
{
if (current.Color != lines[i][j].Color || current.Font != lines[i][j].Font)
{
if (contents.Length != 0)
{
BuildVAO(current, contents);
}
current = lines[i][j];
contents = lines[i][j].Text;
}
else
{
contents += lines[i][j].Text;
}
}
if (contents.Length != 0)
{
BuildVAO(current, contents);
}
}
CalculateVisibilityTime();
dirty = false;
}