private static void HandleSelectAll(ItemCheckEventArgs e, ToolStripCheckedListBox checkedList, int selectAllIndex)
{
if (e.Index == selectAllIndex)
{
if (e.NewValue == CheckState.Checked)
{
checkedList.CheckAll();
}
if (e.NewValue == CheckState.Unchecked)
{
checkedList.UncheckAll();
}
return;
}
var count = checkedList.CheckedItems.Count;
if (checkedList.GetItemCheckState(selectAllIndex) != CheckState.Unchecked)
{
count--;
}
if (e.NewValue != e.CurrentValue)
{
if (e.NewValue == CheckState.Checked)
{
count++;
}
else
{
count--;
}
}
if (count == 0)
{
checkedList.SetItemState(selectAllIndex, CheckState.Unchecked);
}
else if (count == checkedList.Items.Count - 1)
{
checkedList.SetItemState(selectAllIndex, CheckState.Checked);
}
else
{
checkedList.SetItemState(selectAllIndex, CheckState.Indeterminate);
}
}
private ToolStripMenuItem CreateColumnFilteringMenuItem(OLVColumn column, List <ICluster> clusters)
{
var listBox = new ToolStripCheckedListBox
{
Tag = column,
};
foreach (var cluster in clusters)
{
listBox.AddItem(cluster, column.ValuesChosenForFiltering.Contains(cluster.ClusterKey));
}
var state = listBox.CheckedItems.Count == 0
? CheckState.Unchecked
: listBox.CheckedItems.Count == clusters.Count
? CheckState.Checked
: CheckState.Indeterminate;
listBox.AddItem(SELECT_ALL_LABEL, state);
listBox.ItemCheck += HandleItemCheckedWrapped;
var clearAllMenuItem = new ToolStripMenuItem(CLEAR_ALL_FILTERS_LABEL, ClearFilteringImage, (sender, args) => ClearAllFilters(column));
var applMenuItem = new ToolStripMenuItem(APPLY_LABEL, FilteringImage, (sender, args) => ApplyFilter(listBox, column));
var freeText = new ToolStripTextBoxWithPlaceHolderText()
{
Tag = column,
Text = "",
PlaceHolderText = "search in column",
};
var menuItem = new ToolStripMenuItem(FILTERING_LABEL, null,
new ToolStripItem[]
{
freeText,
new ToolStripSeparator(),
clearAllMenuItem,
new ToolStripSeparator(),
listBox,
applMenuItem
});
return(menuItem);
}
private void ApplyFilter(ToolStripCheckedListBox checkedList, OLVColumn column)
{
if (!(column.ListView is ObjectListView olv) || olv.IsDisposed)
{
return;
}
var textBox = (checkedList.GetCurrentParent() as ToolStripDropDownMenu).Items[0] as ToolStripTextBox;
if (!string.IsNullOrWhiteSpace(textBox.Text))
{
var filter = TextMatchFilter.Contains(olv, textBox.Text);
filter.Columns = new[] { column };
column.ValueBasedFilter = filter;
column.ValuesChosenForFiltering = new ArrayList();
olv.UpdateColumnFiltering();
}
else
{
base.EnactFilter(checkedList, column);
}
}