private void RecordLastAction(Command command, params object[] args)
{
// ignore commands that pass the ribbon as an argument
if (args.Any(a => a != null && a.GetType().Name.Contains("ComObject")))
{
return;
}
try
{
// SettingsProvider will only return an XElement if it has child elements so
// wrap the argument list in an <arguments> element, which itself may be empty
var arguments = new XElement("arguments");
foreach (var arg in args)
{
if (arg != null)
{
arguments.Add(new XElement("arg",
new XAttribute("type", arg.GetType().FullName),
new XAttribute("value", arg.ToString())
));
}
}
var setting = new XElement("command",
new XAttribute("type", command.GetType().FullName),
arguments
);
var provider = new SettingsProvider();
var settings = provider.GetCollection("lastAction");
settings.Clear();
// setting name should equate to the XML root element name here
// the XML is not wrapped with an extra parent, so no worries
settings.Add("command", setting);
var replay = command.GetReplayArguments();
if (replay != null)
{
settings.Add("context", new XElement("context", replay));
}
provider.SetCollection(settings);
provider.Save();
}
catch (Exception exc)
{
logger.WriteLine("error recording last action", exc);
}
}
/// <summary>
/// Instantiates and executes the most recently executed command.
/// </summary>
/// <returns>Task</returns>
public async Task ReplayLastAction()
{
var provider = new SettingsProvider();
var settings = provider.GetCollection("lastAction");
var action = settings.Get <XElement>("command");
if (action != null)
{
try
{
var command = (Command)Activator.CreateInstance(
Type.GetType(action.Attribute("type").Value)
);
var args = new List <object>();
foreach (var arg in action.Element("arguments").Elements("arg"))
{
var type = Type.GetType(arg.Attribute("type").Value);
if (type.IsEnum)
{
args.Add(Enum.Parse(type, arg.Attribute("value").Value));
}
else
{
args.Add(Convert.ChangeType(
arg.Attribute("value").Value,
Type.GetType(arg.Attribute("type").Value)
));
}
}
var context = settings.Get <XElement>("context");
if (context != null && context.HasElements)
{
args.Add(context.Elements().First());
}
await Run("Replaying", command, args.ToArray());
}
catch (Exception exc)
{
provider.RemoveCollection("lastAction");
provider.Save();
logger.WriteLine("error parsing last action; history cleared", exc);
}
}
else
{
await Task.Yield();
}
}