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Oops, forgot the add on this.
svn path=/trunk/gtk-sharp/; revision=2420
This commit is contained in:
Mike Kestner
parent
61b1d1de13
commit
ecc2f8407c
179
generator/SignalHandler.cs
Normal file
179
generator/SignalHandler.cs
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// GtkSharp.Generation.SignalHandler.cs - The SignalHandler marshaling Class.
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//
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// Author: Mike Kestner <mkestner@speakeasy.net>
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//
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// (c) 2002 Mike Kestner
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namespace GtkSharp.Generation {
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using System;
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using System.Collections;
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using System.IO;
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using System.Xml;
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public class SignalHandler {
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private static Hashtable handlers = new Hashtable ();
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public static String GetName(XmlElement sig, SymbolTable table)
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{
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XmlElement ret_elem = sig["return-type"];
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if (ret_elem == null) {
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Console.Write("Missing return-type ");
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return "";
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}
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String retval = ret_elem.GetAttribute("type");
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if (retval == "") {
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Console.Write("Invalid return-type ");
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return "";
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}
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String s_ret = table.GetCSType(retval);
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String p_ret = table.GetMarshalType(retval);
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if ((s_ret == "") || (p_ret == "")) {
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Console.Write("Funky type: " + retval);
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return "";
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}
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String key = retval;
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String pinv = "";
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String name = table.GetName(retval);
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int pcnt = 0;
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ArrayList parms = new ArrayList();
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XmlElement params_elem = sig["parameters"];
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if (params_elem == null) {
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Console.Write("Missing parameters ");
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return "";
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}
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foreach (XmlNode parm in params_elem.ChildNodes) {
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if (parm.Name != "parameter") continue;
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XmlElement elem = (XmlElement) parm;
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String type = elem.GetAttribute("type");
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String ptype = table.GetMarshalType(type);
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if (ptype == "") {
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Console.Write("Funky type: " + type);
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return "";
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}
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if (pcnt > 0) {
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pinv += ", ";
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}
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pinv += (ptype + " arg" + pcnt);
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parms.Add(type);
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if (table.IsObject(type)) {
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name += "Object";
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key += "Object";
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} else {
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name += table.GetName(type);
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key += type;
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}
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pcnt++;
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}
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if (handlers.ContainsKey(name)) {
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return (String) handlers[name];
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}
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String dir;
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if (key.IndexOf("Gtk") >= 0) {
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dir = "..\\gtk\\generated";
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} else if (key.IndexOf("Gdk") >= 0) {
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dir = "..\\gdk\\generated";
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} else if (key.IndexOf("Atk") >= 0) {
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dir = "..\\atk\\generated";
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} else if (key.IndexOf("Pango") >= 0) {
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dir = "..\\pango\\generated";
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} else {
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dir = "..\\glib\\generated";
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}
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String sname = name + "Signal";
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String dname = name + "Delegate";
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String cbname = name + "Callback";
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handlers[name] = sname;
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if (!Directory.Exists(dir)) {
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Directory.CreateDirectory(dir);
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}
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String filename = dir + "\\" + sname + ".cs";
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FileStream stream = new FileStream (filename, FileMode.Create, FileAccess.Write);
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StreamWriter sw = new StreamWriter (stream);
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sw.WriteLine ("// Generated File. Do not modify.");
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sw.WriteLine ("// <c> 2001-2002 Mike Kestner");
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sw.WriteLine ();
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sw.WriteLine("namespace GtkSharp {");
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sw.WriteLine();
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sw.WriteLine("\tusing System;");
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sw.WriteLine("\tusing System.Runtime.InteropServices;");
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sw.WriteLine();
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sw.Write("\tpublic delegate " + p_ret + " ");
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sw.WriteLine(dname + "(" + pinv + ", int key);");
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sw.WriteLine();
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sw.WriteLine("\tpublic class " + sname + " : SignalCallback {");
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sw.WriteLine();
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sw.WriteLine("\t\tprivate static " + dname + " _Delegate;");
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sw.WriteLine();
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sw.Write("\t\tprivate static " + s_ret + " ");
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sw.WriteLine(cbname + "(" + pinv + ", int key)");
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sw.WriteLine("\t\t{");
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sw.WriteLine("\t\t\tif (!_Instances.Contains(key))");
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sw.WriteLine("\t\t\t\tthrow new Exception(\"Unexpected signal key\");");
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sw.WriteLine();
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sw.WriteLine("\t\t\t" + sname + " inst = (" + sname + ") _Instances[key];");
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sw.WriteLine("\t\t\tSignalArgs args = new SignalArgs();");
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for (int idx=1; idx < parms.Count; idx++) {
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if (table.IsObject((String)parms[idx])) {
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sw.Write("\t\t\targs.Args[" + idx + "] ");
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sw.WriteLine("= GLib.Object.GetObject(arg" + idx + ");");
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} else {
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sw.WriteLine("\t\t\targs.Args[" + idx + "] = arg" + idx + ";");
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}
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}
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sw.WriteLine("\t\t\tinst._handler (inst._obj, args);");
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if (retval != "void") {
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sw.WriteLine("\t\t\treturn (" + s_ret + ") args.RetVal;");
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}
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sw.WriteLine("\t\t}");
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sw.WriteLine();
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sw.Write("\t\t[DllImport(\"gobject-1.3.dll\", ");
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sw.WriteLine("CallingConvention=CallingConvention.Cdecl)]");
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sw.Write("\t\tstatic extern void g_signal_connect_data(");
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sw.Write("IntPtr obj, String name, " + dname + " cb, int key, IntPtr p,");
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sw.WriteLine(" int flags);");
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sw.WriteLine();
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sw.Write("\t\tpublic " + sname + "(GLib.Object obj, IntPtr raw, ");
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sw.WriteLine("String name, EventHandler eh) : base(obj, eh)");
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sw.WriteLine("\t\t{");
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sw.WriteLine("\t\t\tif (_Delegate == null) {");
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sw.WriteLine("\t\t\t\t_Delegate = new " + dname + "(" + cbname + ");");
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sw.WriteLine("\t\t\t}");
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sw.Write("\t\t\tg_signal_connect_data(raw, name, ");
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sw.WriteLine("_Delegate, _key, new IntPtr(0), 0);");
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sw.WriteLine("\t\t}");
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sw.WriteLine();
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sw.WriteLine("\t\t~" + sname + "()");
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sw.WriteLine("\t\t{");
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sw.WriteLine("\t\t\t_Instances.Remove(_key);");
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sw.WriteLine("\t\t\tif(_Instances.Count == 0) {");
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sw.WriteLine("\t\t\t\t_Delegate = null;");
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sw.WriteLine("\t\t\t}");
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sw.WriteLine("\t\t}");
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sw.WriteLine("\t}");
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sw.WriteLine("}");
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sw.Close();
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return sname;
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}
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}
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}
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