private void ComptuteDisplayIndex()
{
Dictionary <TType, int> objTTypeIndexDictionary = new Dictionary <TType, int>();
List <TType> objTTypeList = new List <TType>();
for (int i = 0; i < _contentList.Count; i++)
{
ControlWithMetaData objLoopControl = _contentList[i];
if (objLoopControl.Visible)
{
objTTypeIndexDictionary.Add(objLoopControl.Item, i);
objTTypeList.Add(objLoopControl.Item);
}
}
objTTypeList.Sort(_comparison);
_displayIndex.Clear();
foreach (TType objLoopTType in objTTypeList)
{
_displayIndex.Add(objTTypeIndexDictionary[objLoopTType]);
}
if (_rendered == null || _rendered.Length != _displayIndex.Count)
{
_rendered = new BitArray(_displayIndex.Count);
}
else
{
_rendered.SetAll(false);
}
}
private void LoadRange(int min, int max)
{
min = Math.Max(0, min);
max = Math.Min(_displayIndex.Count, max);
if (_rendered.FirstMatching(false, min) > max)
{
return;
}
pnlDisplay.SuspendLayout();
for (int i = min; i < max; i++)
{
if (_rendered[i])
{
continue;
}
ControlWithMetaData item = _contentList[_displayIndex[i]];
item.Control.Location = new Point(0, i * _contentList[0].Control.Height);
item.Control.Visible = true;
_rendered[i] = true;
}
pnlDisplay.ResumeLayout();
}
public BindingListDisplay(BindingList <TType> contents, Func <TType, Control> funcCreateControl, bool blnLoadVisibleOnly = true)
{
InitializeComponent();
Contents = contents ?? throw new ArgumentNullException(nameof(contents));
_funcCreateControl = funcCreateControl;
_blnLoadVisibleOnly = blnLoadVisibleOnly;
DisplayPanel.SuspendLayout();
try
{
int intMaxControlHeight = 0;
foreach (TType objLoopTType in Contents)
{
ControlWithMetaData objNewControl = new ControlWithMetaData(objLoopTType, this, false);
intMaxControlHeight = Math.Max(objNewControl.Control.PreferredSize.Height, intMaxControlHeight);
_lstContentList.Add(objNewControl);
}
if (intMaxControlHeight > 0)
{
ListItemControlHeight = intMaxControlHeight;
}
DisplayPanel.Controls.AddRange(_lstContentList.Select(x => x.Control).ToArray());
_indexComparer = new IndexComparer(Contents);
_comparison = _comparison ?? _indexComparer;
Contents.ListChanged += ContentsChanged;
ComputeDisplayIndex();
LoadScreenContent();
BindingListDisplay_SizeChanged(null, null);
}
finally
{
_blnIsTopmostSuspendLayout = true;
DisplayPanel.ResumeLayout();
}
}
