public void SetBooleanExpression(BooleanFunctionViewModel vm)
{
_Model = (BooleanFunction)vm.Model;
_Model.Consumer = this.Parent.Model;
vm.Parent = this;
SetModelToParent();
if (_Model is ComparisonOperator)
{
this.IsCommandPanelVisible = true;
this.View = new ComparisonOperatorView((ComparisonOperatorViewModel)vm);
}
else if (_Model is BooleanOperator)
{
this.IsCommandPanelVisible = false;
this.View = new BooleanOperatorView((BooleanOperatorViewModel)vm);
}
}
public void RemoveChildOperator(BooleanFunctionViewModel child)
{
this.Operands.Remove(child);
}
private void RemoveBooleanOperator()
{
BooleanOperator model = this.Model as BooleanOperator;
if (model == null)
{
return;
}
if (model.IsRoot)
{
if (this.Parent is BooleanExpressionViewModel)
{
((BooleanExpressionViewModel)this.Parent).ClearBooleanExpression();
}
}
else
{
BooleanOperatorViewModel parent = this.Parent as BooleanOperatorViewModel;
if (parent == null)
{
return;
}
BooleanOperator consumer = model.Consumer as BooleanOperator;
if (consumer == null)
{
return;
}
if (consumer.Operands.Count == 0)
{
return;
}
consumer.Operands.Remove(model);
parent.RemoveChildOperator(this);
if (parent.Operands.Count == 1)
{
BooleanFunctionViewModel orphan = parent.Operands[0];
if (parent.Parent is BooleanExpressionViewModel)
{
orphan.Name = parent.Name;
((BooleanExpressionViewModel)parent.Parent).SetBooleanExpression(orphan);
}
else if (parent.Parent is BooleanOperatorViewModel)
{
orphan.Parent = parent.Parent;
orphan.Model.Consumer = parent.Parent.Model;
int index_to_replace = ((BooleanOperator)consumer.Consumer).Operands.IndexOf(consumer);
((BooleanOperator)consumer.Consumer).Operands.RemoveAt(index_to_replace);
((BooleanOperator)consumer.Consumer).Operands.Insert(index_to_replace, (BooleanOperator)orphan.Model);
index_to_replace = ((BooleanOperatorViewModel)parent.Parent).Operands.IndexOf(parent);
((BooleanOperatorViewModel)parent.Parent).Operands.RemoveAt(index_to_replace);
((BooleanOperatorViewModel)parent.Parent).Operands.Insert(index_to_replace, orphan);
}
}
}
}