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2006-06-21 Gonzalo Paniagua Javier <gonzalo@ximian.com>
* glade/HandlerNotFoundExeception.cs: * glade/XML.custom: provide a better error when the signature of a handler does not match the one of the event. svn path=/trunk/gtk-sharp/; revision=61911
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@ -1,3 +1,9 @@
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2006-06-21 Gonzalo Paniagua Javier <gonzalo@ximian.com>
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* glade/HandlerNotFoundExeception.cs:
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* glade/XML.custom: provide a better error when the signature of a
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handler does not match the one of the event.
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2006-05-10 Mike Kestner <mkestner@novell.com>
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* bootstrap-2.10 : strap for the new 2.9.0 API.
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@ -52,6 +52,17 @@ namespace Glade {
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this.delegate_type = delegate_type;
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}
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public HandlerNotFoundException (string message, string handler_name, string signal_name,
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EventInfo evnt, Type delegate_type)
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: base ((message != null) ? message : "No handler " + handler_name + " found for signal " + signal_name,
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null)
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{
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this.handler_name = handler_name;
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this.signal_name = signal_name;
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this.evnt = evnt;
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this.delegate_type = delegate_type;
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}
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protected HandlerNotFoundException (SerializationInfo info, StreamingContext context)
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: base (info, context)
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{
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@ -257,12 +257,69 @@
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if (!connected)
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{
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throw new HandlerNotFoundException (handler_name, signal_name, ei, delegate_type);
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string msg = ExplainError (ei.Name, delegate_type, handler_type, handler_name);
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throw new HandlerNotFoundException (msg, handler_name, signal_name, ei, delegate_type);
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}
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}
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}
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}
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static string GetSignature (System.Reflection.MethodInfo method)
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{
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if (method == null)
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return null;
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System.Reflection.ParameterInfo [] parameters = method.GetParameters ();
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System.Text.StringBuilder sb = new System.Text.StringBuilder ();
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sb.Append ('(');
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foreach (System.Reflection.ParameterInfo info in parameters) {
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sb.Append (info.ParameterType.ToString ());
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sb.Append (',');
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}
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if (sb.Length != 0)
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sb.Length--;
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sb.Append (')');
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return sb.ToString ();
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}
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static string GetSignature (Type delegate_type)
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{
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System.Reflection.MethodInfo method = delegate_type.GetMethod ("Invoke");
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return GetSignature (method);
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}
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const System.Reflection.BindingFlags flags = System.Reflection.BindingFlags.NonPublic |
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System.Reflection.BindingFlags.Public |
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System.Reflection.BindingFlags.Static |
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System.Reflection.BindingFlags.Instance;
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static string GetSignature (Type klass, string method_name)
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{
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try {
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System.Reflection.MethodInfo method = klass.GetMethod (method_name, flags);
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return GetSignature (method);
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} catch {
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// May be more than one method with that name and none matches
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return null;
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}
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}
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static string ExplainError (string event_name, Type deleg, Type klass, string method)
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{
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if (deleg == null || klass == null || method == null)
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return null;
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System.Text.StringBuilder sb = new System.Text.StringBuilder ();
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string expected = GetSignature (deleg);
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string actual = GetSignature (klass, method);
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if (actual == null)
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return null;
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sb.AppendFormat ("The handler for the event {0} should take '{1}', " +
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"but the signature of the provided handler ('{2}') is '{3}'\n",
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event_name, expected, method, actual);
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return sb.ToString ();
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}
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System.Reflection.MemberFilter signalFilter = new System.Reflection.MemberFilter (SignalFilter);
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