YES! We finally have dynamic signals between Core and Client, meaning that arbitrary

[quassel.git] / src / contrib / qxt / qxtboundfunction.h

diff --git a/src/contrib/qxt/qxtboundfunction.h b/src/contrib/qxt/qxtboundfunction.h
new file mode 100644 (file)
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--- /dev/null
+++ b/src/contrib/qxt/qxtboundfunction.h
@@ -0,0 +1,104 @@
+/****************************************************************************
+**
+** Copyright (C) Qxt Foundation. Some rights reserved.
+**
+** This file is part of the QxtCore module of the Qt eXTension library
+**
+** This library is free software; you can redistribute it and/or modify it
+** under the terms of th Common Public License, version 1.0, as published by
+** IBM.
+**
+** This file is provided "AS IS", without WARRANTIES OR CONDITIONS OF ANY
+** KIND, EITHER EXPRESS OR IMPLIED INCLUDING, WITHOUT LIMITATION, ANY
+** WARRANTIES OR CONDITIONS OF TITLE, NON-INFRINGEMENT, MERCHANTABILITY OR
+** FITNESS FOR A PARTICULAR PURPOSE.
+**
+** You should have received a copy of the CPL along with this file.
+** See the LICENSE file and the cpl1.0.txt file included with the source
+** distribution for more information. If you did not receive a copy of the
+** license, contact the Qxt Foundation.
+**
+** <http://libqxt.sourceforge.net>  <foundation@libqxt.org>
+**
+****************************************************************************/
+
+#ifndef QXTBOUNDFUNCTION_H
+#define QXTBOUNDFUNCTION_H
+
+#include <QObject>
+#include <QMetaObject>
+#include <QGenericArgument>
+#include <qxtmetaobject.h>
+#include <qxtnull.h>
+#include <QThread>
+
+class QxtBoundFunction : public QObject
+{
+    Q_OBJECT
+public:
+    template <class T>
+    inline QxtNullable<T> invoke(QXT_PROTO_10ARGS(QVariant))
+    {
+        if (QThread::currentThread() == parent()->thread())
+            return invoke<T>(Qt::DirectConnection, p1, p2, p3, p4, p5, p6, p7, p8, p9, p10); 
+#if QT_VERSION >= 0x040300
+        return invoke<T>(Qt::BlockingQueuedConnection, p1, p2, p3, p4, p5, p6, p7, p8, p9, p10);
+#else
+        qWarning() << "QxtBoundFunction::invoke: Cannot return a value using a queued connection";
+        return QxtNull;
+#endif
+    }
+
+    template <class T>
+    QxtNullable<T> invoke(Qt::ConnectionType type, QXT_PROTO_10ARGS(QVariant))
+    {
+        if (type == Qt::QueuedConnection)
+        {
+            qWarning() << "QxtBoundFunction::invoke: Cannot return a value using a queued connection";
+            return qxtNull;
+        }
+        T retval;
+        // I know this is a totally ugly function call
+        if (invoke(type, QGenericReturnArgument(qVariantFromValue<T>(*reinterpret_cast<T*>(0)).typeName(), reinterpret_cast<void*>(&retval)),
+                   p1, p2, p3, p4, p5, p6, p7, p8, p9, p10))
+        {
+            return retval;
+        }
+        else
+        {
+            return qxtNull;
+        }
+    }
+
+    inline bool invoke(QXT_PROTO_10ARGS(QVariant))
+    {
+        return invoke(Qt::AutoConnection, p1, p2, p3, p4, p5, p6, p7, p8, p9, p10);
+    }
+    bool invoke(Qt::ConnectionType, QXT_PROTO_10ARGS(QVariant));
+
+    inline bool invoke(QXT_PROTO_10ARGS(QGenericArgument))
+    {
+        return invoke(Qt::AutoConnection, p1, p2, p3, p4, p5, p6, p7, p8, p9, p10);
+    }
+    inline bool invoke(Qt::ConnectionType type, QXT_PROTO_10ARGS(QGenericArgument)) {
+        return invoke(type, QGenericReturnArgument(), p1, p2, p3, p4, p5, p6, p7, p8, p9, p10);
+    }
+
+    inline bool invoke(QGenericReturnArgument returnValue, QXT_PROTO_10ARGS(QVariant))
+    {
+        return invoke(Qt::AutoConnection, returnValue, p1, p2, p3, p4, p5, p6, p7, p8, p9, p10);
+    }
+    bool invoke(Qt::ConnectionType type, QGenericReturnArgument returnValue, QXT_PROTO_10ARGS(QVariant));
+
+    inline bool invoke(QGenericReturnArgument returnValue, QXT_PROTO_10ARGS(QGenericArgument))
+    {
+        return invoke(Qt::AutoConnection, returnValue, p1, p2, p3, p4, p5, p6, p7, p8, p9, p10);
+    }
+    bool invoke(Qt::ConnectionType type, QGenericReturnArgument returnValue, QXT_PROTO_10ARGS(QGenericArgument));
+
+protected:
+    QxtBoundFunction(QObject* parent = 0);
+    virtual bool invokeImpl(Qt::ConnectionType type, QGenericReturnArgument returnValue, QXT_PROTO_10ARGS(QGenericArgument)) = 0;
+};
+
+#endif