// Checks/Unchecks items depending on the give bitvalue
private void UpdateCheckedItems(int value)
{
IsUpdatingCheckStates = true;
// Iterate over all items
for (int i = 0; i < Items.Count; i++)
{
FlagCheckedListBoxItem item = Items[i] as FlagCheckedListBoxItem;
if (item == null)
{
continue;
}
if (item.Value == 0)
{
SetItemChecked(i, value == 0);
}
else
{
// If the bit for the current item is on in the bitvalue, check it
if (((item.Value & value) == item.Value) && (item.Value != 0))
{
SetItemChecked(i, true);
}
// Otherwise uncheck it
else
{
SetItemChecked(i, false);
}
}
}
IsUpdatingCheckStates = false;
}
// Updates items in the checklistbox
// composite = The item that was checked/unchecked
// cs = The check state of that item
private void UpdateCheckedItems(FlagCheckedListBoxItem composite, CheckState cs)
{
// If the value of the item is 0, call directly.
if (composite.Value == 0)
{
UpdateCheckedItems(0);
}
// Get the total value of all checked items
int sum = (from object t in Items select t as FlagCheckedListBoxItem).Where((item, i) => (item != null) && GetItemChecked(i)).Aggregate(0, (current, item) => current | item.Value);
// If the item has been unchecked, remove its bits from the sum
if (cs == CheckState.Unchecked)
{
sum = sum & ~composite.Value;
}
// If the item has been checked, combine its bits with the sum
else
{
sum |= composite.Value;
}
// Update all items in the checklistbox based on the final bit value
UpdateCheckedItems(sum);
}
protected override void OnItemCheck(ItemCheckEventArgs e) {
base.OnItemCheck(e);
if (IsUpdatingCheckStates) {
return;
}
// Get the checked/unchecked item
FlagCheckedListBoxItem item = Items[e.Index] as FlagCheckedListBoxItem;
// Update other items
UpdateCheckedItems(item, e.NewValue);
}
// Updates items in the checklistbox
// composite = The item that was checked/unchecked
// cs = The check state of that item
private void UpdateCheckedItems(FlagCheckedListBoxItem composite, CheckState cs) {
// If the value of the item is 0, call directly.
if (composite.Value == 0) {
UpdateCheckedItems(0);
}
// Get the total value of all checked items
int sum = (from object t in Items select t as FlagCheckedListBoxItem).Where((item, i) => (item != null) && GetItemChecked(i)).Aggregate(0, (current, item) => current | item.Value);
// If the item has been unchecked, remove its bits from the sum
if (cs == CheckState.Unchecked) {
sum = sum & ~composite.Value;
}
// If the item has been checked, combine its bits with the sum
else {
sum |= composite.Value;
}
// Update all items in the checklistbox based on the final bit value
UpdateCheckedItems(sum);
}
// Adds an integer value and its associated description
private void Add(int v, string c)
{
FlagCheckedListBoxItem item = new FlagCheckedListBoxItem(v, c);
Items.Add(item);
}
// Adds an integer value and its associated description
private void Add(int v, string c) {
FlagCheckedListBoxItem item = new FlagCheckedListBoxItem(v, c);
Items.Add(item);
}