Refactoring of BasicHandler

[quassel.git] / src / common / basichandler.cpp

diff --git a/src/common/basichandler.cpp b/src/common/basichandler.cpp
new file mode 100644 (file)
index 0000000..59fba8a
--- /dev/null
+++ b/src/common/basichandler.cpp
@@ -0,0 +1,84 @@
+/***************************************************************************
+ *   Copyright (C) 2005-10 by the Quassel Project                          *
+ *   devel@quassel-irc.org                                                 *
+ *                                                                         *
+ *   This program is free software; you can redistribute it and/or modify  *
+ *   it under the terms of the GNU General Public License as published by  *
+ *   the Free Software Foundation; either version 2 of the License, or     *
+ *   (at your option) version 3.                                           *
+ *                                                                         *
+ *   This program is distributed in the hope that it will be useful,       *
+ *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
+ *   GNU General Public License for more details.                          *
+ *                                                                         *
+ *   You should have received a copy of the GNU General Public License     *
+ *   along with this program; if not, write to the                         *
+ *   Free Software Foundation, Inc.,                                       *
+ *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
+ ***************************************************************************/
+#include "basichandler.h"
+
+#include <QMetaMethod>
+
+#include "logger.h"
+
+BasicHandler::BasicHandler(QObject *parent)
+  : QObject(parent),
+    defaultHandler(-1),
+    initDone(false)
+{
+}
+
+QStringList BasicHandler::providesHandlers() {
+  return handlerHash().keys();
+}
+
+const QHash<QString, int> &BasicHandler::handlerHash() {
+  if(!initDone) {
+    for(int i = metaObject()->methodOffset(); i < metaObject()->methodCount(); i++) {
+      QString methodSignature(metaObject()->method(i).signature());
+      if(methodSignature.startsWith("defaultHandler")) {
+       defaultHandler = i;
+       continue;
+      }
+      
+      if(!methodSignature.startsWith("handle"))
+       continue;
+      
+      methodSignature = methodSignature.section('(',0,0);  // chop the attribute list
+      methodSignature = methodSignature.mid(6); // strip "handle"
+      _handlerHash[methodSignature] = i;
+    }
+    initDone = true;
+  }
+  return _handlerHash;
+}
+
+void BasicHandler::handle(const QString &member, QGenericArgument val0,
+                         QGenericArgument val1, QGenericArgument val2,
+                         QGenericArgument val3, QGenericArgument val4,
+                         QGenericArgument val5, QGenericArgument val6,
+                         QGenericArgument val7, QGenericArgument val8) {
+  // Now we try to find a handler for this message. BTW, I do love the Trolltech guys ;-)
+  // and now we even have a fast lookup! Thanks thiago!
+
+  QString handler = member.toLower();
+  handler[0] = handler[0].toUpper();
+
+  if(!handlerHash().contains(handler)) {
+    if(defaultHandler == -1) {
+      qWarning() << QString("No such Handler: %1::handle%2").arg(metaObject()->className(), handler);
+      return;
+    } else {
+      void *param[] = {0, Q_ARG(QString, member).data(), val0.data(), val1.data(), val2.data(), val3.data(), val4.data(),
+                      val5.data(), val6.data(), val7.data(), val8.data(), val8.data()};
+      qt_metacall(QMetaObject::InvokeMetaMethod, defaultHandler, param);
+      return;
+    }
+  }
+
+  void *param[] = {0, val0.data(), val1.data(), val2.data(), val3.data(), val4.data(),
+                  val5.data(), val6.data(), val7.data(), val8.data(), val8.data(), 0};
+  qt_metacall(QMetaObject::InvokeMetaMethod, handlerHash()[handler], param);
+}