public void SelectAll()
{
List<RowIdentifier> allItems = new List<RowIdentifier>( ItemList.Count );
for( int i = 0; i < ItemList.Count; i++ )
{
RowIdentifier rowIdentifier = new NonGroupRow( ItemList[i] );
allItems.Add( rowIdentifier );
}
SelectedItems.ClearAndAdd( allItems.ToArray() );
Invalidate();
}
/// <summary>
/// Returns the number of items in the list adjusted for the group items.
/// This method will also create a bit array of types <seealso cref="_positionTypes"/>
/// </summary>
/// <returns></returns>
private int CalculateListItems()
{
using( new EnforceLazyLayout( this ) )
{
if( _rowInformation == null )
{
PositionedRowIdentifier[] trackableItems = new PositionedRowIdentifier[3];
trackableItems[0] = _focusedItem;
if( _lastCalculatedRowInformation != null )
{
if( FocusedItem != null )
{
if( LineStart < _lastCalculatedRowInformation.Count )
{
trackableItems[1] = new PositionedRowIdentifier( _lastCalculatedRowInformation[LineStart], LineStart );
}
RowIdentifier nextValidRow = locateNearestRowThatsStillValid( FocusedItem, ItemList, _lastCalculatedRowInformation );
if( nextValidRow != null )
{
trackableItems[2] = new PositionedRowIdentifier( nextValidRow, 0 );
}
}
}
Column[] groupColumns = ListControl.Columns.GroupedItems.ToArray();
object lastItem = null;
_lastCalculatedRowInformation = _rowInformation = new List<RowIdentifier>( ItemList.Count );
int hideRowGroupIndex = -1;
List<PositionedRowIdentifier> newSelection = new List<PositionedRowIdentifier>();
GroupIdentifier[] activeGroups = new GroupIdentifier[groupColumns.Length];
object[] listItems = ItemList.ToArray();
for( int i = 0; i < ItemList.Count; i++ )
{
object item = ItemList[i];
int groupIndex = ItemInNewGroup( groupColumns, item, lastItem );
if( groupIndex != -1 )
{
for( int iGroup = groupIndex; iGroup < groupColumns.Length; iGroup++ )
{
GroupIdentifier gi = new GroupIdentifier( i, listItems, Columns, iGroup, item );
int hideGroupIndex = hideRowGroupIndex;
if( hideRowGroupIndex == -1 || iGroup <= hideRowGroupIndex )
{
if( GetGroupState( gi ) == GroupState.Collapsed )
{
hideGroupIndex = iGroup;
if( groupIndex <= hideRowGroupIndex )
{
hideRowGroupIndex = -1;
}
}
else
{
hideRowGroupIndex = hideGroupIndex = -1;
}
}
if( hideRowGroupIndex == -1 )
{
HandleSyncing( gi, _rowInformation.Count, trackableItems, newSelection );
_rowInformation.Add( gi );
}
if( activeGroups[iGroup] != null )
{
activeGroups[iGroup].End = i;
}
activeGroups[iGroup] = gi;
hideRowGroupIndex = hideGroupIndex;
}
}
if( hideRowGroupIndex == -1 )
{
RowIdentifier ri = new NonGroupRow( item );
HandleSyncing( ri, _rowInformation.Count, trackableItems, newSelection );
_rowInformation.Add( ri );
}
lastItem = item;
}
foreach( GroupIdentifier gi in activeGroups )
{
if( gi != null )
{
gi.End = ItemList.Count;
}
}
if( VerticalScrollbarVisible )
{
int newMax = _rowInformation.Count == 0 ? 0 : _rowInformation.Count - 1;
if( VScrollbar.Value >= newMax )
{
VScrollbar.Value = newMax;
}
VScrollbar.Maximum = newMax;
}
if( trackableItems[1] != null )
{
LineStart = trackableItems[1].Position;
}
if( _focusedItem != null && !IsSelectedItemValid( _focusedItem ) )
{
if( trackableItems[2] != null && IsSelectedItemValid( trackableItems[2] ) )
{
PositionedRowIdentifier oldFocusedItem = _focusedItem;
if( _focusedItem != trackableItems[2] )
{
_focusedItem = trackableItems[2];
ListControl.FireFocusChanged( oldFocusedItem == null ? null : oldFocusedItem.RowIdentifier,
_focusedItem == null ? null : _focusedItem.RowIdentifier );
}
newSelection.Add( _focusedItem );
}
else
{
int newPosition;
if( _focusedItem.Position >= _rowInformation.Count )
{
newPosition = _rowInformation.Count - 1;
}
else
{
newPosition = _focusedItem.Position;
}
if( newPosition >= 0 )
{
PositionedRowIdentifier si = new PositionedRowIdentifier( _rowInformation[newPosition], newPosition );
FocusedItem = si;
newSelection.Add( _focusedItem );
}
else
{
FocusedItem = null;
}
}
}
RowIdentifier[] rowItemsToSelect = new RowIdentifier[newSelection.Count];
int j = 0;
foreach( PositionedRowIdentifier pri in newSelection )
{
rowItemsToSelect[j++] = pri.RowIdentifier;
}
SelectedItems.ClearAndAdd( rowItemsToSelect );
if( SelectedItems.Count == 0 && FocusedItem == null && VScrollbar != null && VScrollbar.Visible )
{
VScrollbar.Value = 0;
}
}
_mapOfPositions = null;
}
ListControl.OnCalculatedGroupRows( EventArgs.Empty );
return _rowInformation.Count;
}
