public ICmd Exec()
{
List <ICmd> invList = new List <ICmd>(); //list to store returned inverses
for (int i = 0; i < list.Count; i++) //loop through entire list
{
invList.Add(list[i].Exec()); //call execute function for each element in the list and add returned inverse to inverse list
}
var inverse = new MultiCmd(invList); //create new inverse element
return(inverse);
}
public void pushToUndoBGColorGroup(List <Cell> list) //push group of color changes to undo stack
{
List <ICmd> cmds = new List <ICmd>();
for (int i = 0; i < list.Count; i++) //loop through list of cells to create list of restore background color objects
{
RestoreBackgroundColor temp = new RestoreBackgroundColor(list[i], list[i].getBGColor());
cmds.Add(temp);
}
MultiCmd mcmd = new MultiCmd(cmds); //create new multi command object
mcmd.setMessage(" change in background color of cells");
undo.Push(mcmd); //add multi command object to list
}