/// <summary>
/// Add an action (on context menu) on the series grid.
/// </summary>
/// <param name="menuItemText">The text of the menu item</param>
/// <param name="onClick">The event handler to call when menu is selected</param>
public void AddContextOption(string menuItemText, System.EventHandler onClick, bool active)
{
CheckMenuItem item = null;
foreach (Widget w in Popup)
{
CheckMenuItem oldItem = w as CheckMenuItem;
if (oldItem != null)
{
AccelLabel itemText = oldItem.Child as AccelLabel;
if (itemText.Text == menuItemText)
{
item = oldItem;
// Deactivate the "Activate" handler
PropertyInfo pi = item.GetType().GetProperty("AfterSignals", BindingFlags.NonPublic | BindingFlags.Instance);
if (pi != null)
{
System.Collections.Hashtable handlers = (System.Collections.Hashtable)pi.GetValue(w);
if (handlers != null && handlers.ContainsKey("activate"))
{
EventHandler handler = (EventHandler)handlers["activate"];
item.Activated -= handler;
}
}
break;
}
}
}
if (item == null)
{
item = new CheckMenuItem(menuItemText);
item.DrawAsRadio = false;
Popup.Append(item);
Popup.ShowAll();
}
// Be sure to set the Active property before attaching the Activated event, since
// the event handler will call this function again when Active is changed.
// This can lead to infinite recursion. This is also why we deactivate the handler
// (done above) when the item is already found in the menu
item.Active = active;
item.Activated += onClick;
}
