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namespace IvyBus
{
using System;
using System.Collections.Generic;
using System.Collections.Specialized;
using System.Text;
using System.Threading;
using System.Text.RegularExpressions;
using System.Collections.ObjectModel;
/* This is the Application side of binding storage */
/* association of a generated Key and a delegate and the expression */
/* this is SEND to other client */
public class IvyApplicationBinding
{
private BindingType binding;
// Argument formatting Expression to replace argument in in regular expresion binding
// format %number[:objectFormat]%
// where number in argument index and objectFormat the ToString format passed to argument
private Regex re = new Regex(@"%(\d+)(|:(.*))%");
public BindingType Binding
{
get { return binding; }
set { binding = value; }
}
private int key;
public int Key
{
get { return key; }
set { key = value; }
}
private object[] args;
private string expression;
public string Expression
{
get { return expression; }
set { expression = value; }
}
private string formatted_expression;
public string FormattedExpression
{
get
{
FormatExpression();
return formatted_expression;
}
}
private Collection<string> arguments;
///<summary>SentMessageClasses the first word token of sent messages
///<remarks> optimise the parsing process when sending messages </remarks>
///</summary>
public Collection<string> Arguments
{
get
{
return arguments;
}
}
public object[] CallbackArguments
{
get
{
return args;
}
}
public event EventHandler<IvyMessageEventArgs> Callback;
public IvyApplicationBinding()
:this(BindingType.RegularExpression,string.Empty,null)
{
}
internal IvyApplicationBinding(BindingType type, string expression, params object[] args)
{
arguments = new Collection<string>();
this.Binding = type;
this.Expression = expression;
this.args = args;
}
private string ReplaceArgs(Match m)
{
string s = string.Empty;
// Get the matched string. convert to argindex
int argindex = int.Parse(m.Groups[1].Value);
// use %... to specify formating
object arg = args[argindex];
IFormattable fmt = arg as IFormattable;
if (fmt != null)
s = fmt.ToString(m.Groups[3].Value, null);
else if (arg != null)
s = arg.ToString();
return s;
}
// translate part of expression to object property
public void FormatExpression()
{
//// Safely :
#if (!PocketPC)//TODO Pocket PC doesn't have Target Member
EventHandler<IvyMessageEventArgs> temp = Callback;
if (temp != null)
{
//TODO Pocket PC doesn't have Target Member
object target = temp.Target;
if (args == null)
{
args = new object[arguments.Count];
for (int i = 0; i < arguments.Count; i++)
{
System.Reflection.PropertyInfo prop = target.GetType().GetProperty(arguments[i]);
if (prop != null)
args[i] = prop.GetValue(target, null);
else //TODO what else BUG msgbox in desing mode !!!
args[i] = arguments[i];
}
}
formatted_expression = re.Replace(expression, ReplaceArgs);
}
else //TODO Abnormal condition Design Time
#endif
formatted_expression = expression;
}
#if ( PocketPC )
internal void Firevent(System.Windows.Forms.Control control, IvyMessageEventArgs e)
{
//// Safely invoke an event:
EventHandler<IvyMessageEventArgs> temp = Callback;
if (temp == null)
{
throw new IvyException("(callCallback) Not callback for id " + e.Id);
}
if (control != null)
{
control.Invoke(temp, this, e);
}
else
temp(this, e);
}
#else
internal void Firevent(System.Threading.SynchronizationContext syncContext, bool synchronous , IvyMessageEventArgs e)
{
//// Safely invoke an event:
EventHandler<IvyMessageEventArgs> temp = Callback;
if (temp == null)
{
throw new IvyException("(callCallback) Not callback for id " + e.Id);
}
if (synchronous )
{
SendOrPostCallback update = delegate(object state)
{
IvyMessageEventArgs args = (IvyMessageEventArgs)state;
temp(this, args);
};
syncContext.Post(update, e);
}
else
temp(this, e);
}
#endif
}
}
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