// deletes the UI component that corresponds to a rule
private void DeleteRuleUserControl(object sender, EventArgs e)
{
BeepRuleUserControl bruc = sender as BeepRuleUserControl;
beepRules.Remove(bruc.Rule);
BeepRulesUIComponents.Remove(bruc);
}
// starts a drag drop sequence
private void RuleUserControlDragPreviewMouseDown(object sender, MouseEventArgs e)
{
if (sender is BeepRuleUserControl && e.LeftButton == MouseButtonState.Pressed)
{
BeepRuleUserControl draggedItem = sender as BeepRuleUserControl;
DragDrop.DoDragDrop(draggedItem, new DataObject("drag", draggedItem.DataContext), DragDropEffects.Move);
}
}
// creates BeepRuleUserControl, a UI component
private BeepRuleUserControl CreateBeepRuleUserControl(BeepRule rule)
{
BeepRuleUserControl bruc = BeepRuleUserControl.Create(rule);
bruc.SelectedRule += RuleUserControlRuleSelection;
bruc.Deleting += DeleteRuleUserControl;
bruc.Dragging += RuleUserControlDragPreviewMouseDown;
bruc.PrepareColorPickers(StandardColorItems);
bruc.UpdateColorPickers(clrPickMouse.AvailableColors);
return(bruc);
}
//select different rules in UI
private void RuleUserControlRuleSelection(object sender, EventArgs e)
{
BeepRuleUserControl bruc = sender as BeepRuleUserControl;
// selected rule must be different
if (bruc.SelectedRuleName == bruc.RuleName)
{
return;
}
beepRules.Remove(bruc.Rule);
int index = BeepRulesUIComponents.IndexOf(bruc);
BeepRulesUIComponents.Remove(bruc);
BeepRule br = BeepRule.Create(bruc.SelectedRuleName, bw.tiles);
beepRules.Add(br);
BeepRulesUIComponents.Insert(index, CreateBeepRuleUserControl(br));
}
// swaps position of user controls after drag drop
private void RuleUserControlDragDropped(object sender, DragEventArgs e)
{
BeepRuleUserControl draggedBruc = e.Data.GetData("drag") as BeepRuleUserControl;
BeepRuleUserControl targetBruc = ((ListBoxItem)(sender)).DataContext as BeepRuleUserControl;
int removedIdx = lbRules.Items.IndexOf(draggedBruc);
int targetIdx = lbRules.Items.IndexOf(targetBruc);
if (removedIdx < targetIdx)
{
BeepRulesUIComponents.Insert(targetIdx + 1, draggedBruc);
BeepRulesUIComponents.RemoveAt(removedIdx);
}
else
{
int remIdx = removedIdx + 1;
if (BeepRulesUIComponents.Count + 1 > remIdx)
{
BeepRulesUIComponents.Insert(targetIdx, draggedBruc);
BeepRulesUIComponents.RemoveAt(remIdx);
}
}
}
