/// <summary>
/// Refresh all the buttons to display the right items
/// </summary>
private void RefreshButtons()
{
if (_nbRowDisplayed > 0)
{
// for each displayed item of the list
for (int i = 0; i < _nbRowDisplayed; i++)
{
if (TopIndex + i > _nbItems - 1)
{
_rows[i].Visible = false;
}
else
{
// associate with the item
var itemBeingDisplayed = GetItem(TopIndex + i);
_rows[i].Tag = itemBeingDisplayed;
if (!_rows[i].Visible)
{
_rows[i].Visible = true;
}
_rows[i].Height = RowHeight.ClampMax(_listRectangle.Height - i * RowHeight);
}
// repaint
_rows[i].Invalidate();
}
}
Update(); // force to redraw the control immediately
}
/// <summary>
/// This method just add the number of buttons required to display the list
/// </summary>
protected virtual void DrawButtons()
{
// we already display the right number of items?
if ((_nbRowDisplayed - 1) * RowHeight <= _listRectangle.Height && _listRectangle.Height <= _nbRowDisplayed * RowHeight)
{
return;
}
// how many items should be displayed?
_nbRowDisplayed = _nbItems.ClampMax(_listRectangle.Height / RowHeight + 1);
// for each displayed item of the list
for (int i = 0; i < _nbRowDisplayed; i++)
{
// need to add button?
if (i >= _rows.Count)
{
_rows.Add(new YamuiListRow {
Anchor = AnchorStyles.Left | AnchorStyles.Right | AnchorStyles.Top,
Name = i.ToString(),
TabStop = i == 0,
OnRowPaint = OnRowPaint
});
_rows[i].KeyDown += (sender, args) => { OnKeyDown(args); };
_rows[i].ButtonPressed += OnRowClick;
_rows[i].DoubleClick += OnRowClick;
_rows[i].MouseEnter += OnRowMouseEnter;
_rows[i].MouseLeave += OnRowMouseLeave;
_rows[i].Enter += OnRowEnter;
_rows[i].Leave += OnRowLeave;
_rows[i].MouseMove += OnRowMouseMove;
}
_rows[i].Location = new Point(_listRectangle.Left, _listRectangle.Top + i * RowHeight);
_rows[i].Size = new Size(_listRectangle.Width - (HasScrolls ? ScrollWidth : 0), RowHeight.ClampMax(_listRectangle.Height - i * RowHeight));
_rows[i].IsSelected = i == SelectedRowIndex;
// add it to the visible controls
if (!Controls.Contains(_rows[i]))
{
Controls.Add(_rows[i]);
}
}
for (int i = _nbRowDisplayed; i < _rows.Count; i++)
{
if (Controls.Contains(_rows[i]))
{
Controls.Remove(_rows[i]);
}
}
}