private IdentKey CreateMenuAndSubscribe(ICommand command, string parent)
{
BarSubItem parentItem = null;
if (!string.Equals(parent, _rootBar.BarName))
{
parentItem = FindItemByName(parent);
if (parentItem == null)
{
throw new InvalidOperationException("Parent item not find.");
}
}
BarItem item = null;
BarItemLink link = null;
BarItemInvoker invoker = null;
IdentKey key = new IdentKey();
int lastValidIndex = LastIndex;
try
{
item = BarItemFactory.CreateItem(command.CommandType);
item.Tag = key;
_barManager.Items.Add(item);
item.Glyph = command.Image;
item.Appearance.BackColor = Color.Transparent;
if (parentItem == null)
{
link = _rootBar.ItemLinks.Insert(LastIndex, item);
LastIndex++;
}
else
{
link = parentItem.ItemLinks.Insert(parentItem.ItemLinks.Count, item);
}
invoker = BarItemInvokerFactory.CreateItemInvoker(link, command);
_Commands.Add(key, new CommandData(invoker, parentItem));
return(key);
}
catch (Exception ex)
{
ClearResource(parentItem, item, link, invoker, key, lastValidIndex);
throw ex;
}
}
private void UnSubscribeAndRemoveMenu(IdentKey key)
{
if (key == null)
{
throw new ArgumentNullException("Key can not be null.");
}
CommandData data = null;
if (!_Commands.TryGetValue(key, out data))
{
throw new InvalidOperationException("Command with such key is not found.");
}
ICommand command = data.Invoker.Command;
BarItemInvoker invoker = data.Invoker;
BarSubItem parentItem = data.ParentItem;
BarItemLink link = invoker.BarItemLink;
BarItem item = link.Item;
if (command.CommandType == CommandType.Group)
{
BarSubItem groupItem = item as BarSubItem;
List <BarItemLink> itemLinks = new List <BarItemLink>();
foreach (BarItemLink itemLink in groupItem.ItemLinks)
{
itemLinks.Add(itemLink);
}
foreach (BarItemLink itemLink in itemLinks)
{
BarItem i = itemLink.Item;
IdentKey itemKey = i.Tag as IdentKey;
if (itemKey != null)
{
UnSubscribeAndRemoveMenu(itemKey);
}
}
}
ClearResource(parentItem, item, link, invoker, key, parentItem == null ? LastIndex-- : LastIndex);
}
public static BarItemInvoker CreateItemInvoker(BarItemLink link, ICommand command)
{
BarItemInvoker result = null;
switch (command.CommandType)
{
case CommandType.Button:
result = new BarItemInvoker(link, command);
break;
case CommandType.CheckButton:
result = new CheckedBarItemInvoker((BarCheckItemLink)link, command);
break;
case CommandType.Group:
result = new BarItemInvoker(link, command);
break;
default:
throw new NotSupportedException(string.Format("BarItemInvokerFactory. Command type = {0} not supported.", command.CommandType.ToString()));
}
return(result);
}
public CommandData(BarItemInvoker invoker, BarSubItem parent)
{
Invoker = invoker;
ParentItem = parent;
}
private void ClearResource(BarSubItem parentItem, BarItem item, BarItemLink link, BarItemInvoker invoker, IdentKey key, int lastValidIndex)
{
LastIndex = lastValidIndex;
try { _Commands.Remove(key); }
catch { }
try { if (invoker != null)
{
invoker.Dispose();
}
}
catch { }
try
{
if (link != null)
{
if (parentItem == null)
{
_rootBar.ItemLinks.Remove(link);
}
else
{
parentItem.ItemLinks.Remove(link);
}
}
}
catch { }
try { if (item != null)
{
_barManager.Items.Remove(item);
}
}
catch { }
}
