/// <summary>
/// Gets the source list, accounting for sort-order, filter, etc.
/// </summary>
private EListInvalids Rebuild__GetFilteredList(EListInvalids checks)
{
this._filteredList = this.GetSourceContent().Cast <object>().ToList();
if (!_showHidden && _source != null && typeof(Visualisable).IsAssignableFrom(_source.DataType))
{
int remCount = this._filteredList.RemoveAll(z => ((Visualisable)z).Hidden);
this._lblHidden.Text = remCount + " hidden";
this._lblHidden.Visible = remCount != 0;
}
if (this._emptyList && this._filteredList.Count != 0)
{
// List was empty, now is not - make sure to rebuild columns since we might have new ones
checks |= EListInvalids._ColumnsChanged | EListInvalids._ColumnVisibilitiesChanged;
}
this._emptyList = this._filteredList.Count == 0;
if (this._filter != null)
{
int remCount = this._filteredList.RemoveAll(this._filter.FilterRemove);
this._lblFilter.Text = remCount + " filtered";
}
if (this._sortOrder != null)
{
this._filteredList.Sort(this._sortOrder);
}
this._listView.VirtualListSize = this._filteredList.Count;
return(checks);
}
/// <summary>
/// Reinitialises the list.
/// </summary>
/// <param name="checks">What to reinitialise</param>
public void Rebuild(EListInvalids checks)
{
// Suspend updates otherwise we'll get columns for the wrong items (or vice versa)
this._suspendVirtual = true;
// Since we now use a virtual list when the list changes we can just refresh the source
if (checks.HasFlag(EListInvalids._SourceChanged) | checks.HasFlag(EListInvalids._ContentsChanged))
{
checks = this.Rebuild__GetFilteredList(checks);
}
// If we have not yet got the columns we always need to get them regardless
if (this._availableColumns.Count == 0)
{
checks |= EListInvalids._ColumnsChanged | EListInvalids._ColumnVisibilitiesChanged;
}
if (checks.HasFlag(EListInvalids._ColumnsChanged))
{
this.GetAvailableColumns();
}
if (checks.HasFlag(EListInvalids._ColumnVisibilitiesChanged))
{
this.CreateListViewColumnHeaders();
}
if (checks.HasFlag(EListInvalids._ValuesChanged))
{
// Since we now use a virtual list the only thing we need to update are the previews, the rest will update when we redraw
this._imageList.Clear();
}
// Resume updates
this._suspendVirtual = false;
// Redraw everything
if (this._listView.VirtualListSize != 0)
{
this._listView.RedrawItems(0, this._listView.VirtualListSize - 1, true);
}
}
