--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/src/qt3support/tools/q3signal.cpp Mon Jan 11 14:00:40 2010 +0000
@@ -0,0 +1,226 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the Qt3Support module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights. These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "q3signal.h"
+#include "qmetaobject.h"
+#include "qpointer.h"
+#include "q3cstring.h"
+
+QT_BEGIN_NAMESPACE
+
+/*!
+ \class Q3Signal
+ \brief The Q3Signal class can be used to send signals for classes
+ that don't inherit QObject.
+
+ \compat
+
+ If you want to send signals from a class that does not inherit
+ QObject, you can create an internal Q3Signal object to emit the
+ signal. You must also provide a function that connects the signal
+ to an outside object slot. This is how we used to implement
+ signals in Qt 3's QMenuData class, which was not a QObject. In Qt
+ 4, menus contain actions, which are QObjects.
+
+ In general, we recommend inheriting QObject instead. QObject
+ provides much more functionality.
+
+ You can set a single QVariant parameter for the signal with
+ setValue().
+
+ Note that QObject is a \e private base class of Q3Signal, i.e. you
+ cannot call any QObject member functions from a Q3Signal object.
+
+ Example:
+ \snippet doc/src/snippets/code/src_qt3support_tools_q3signal.cpp 0
+*/
+
+/*!
+ Constructs a signal object called \a name, with the parent object
+ \a parent. These arguments are passed directly to QObject.
+*/
+
+Q3Signal::Q3Signal(QObject *parent, const char *name)
+ : QObject(parent, name)
+{
+#ifndef QT_NO_VARIANT
+ val = 0;
+#endif
+}
+
+/*!
+ Destroys the signal. All connections are removed, as is the case
+ with all QObjects.
+*/
+Q3Signal::~Q3Signal()
+{
+}
+#ifndef QT_NO_VARIANT
+// Returns true if it matches ".+(.*int.*"
+static inline bool intSignature(const char *member)
+{
+ Q3CString s(member);
+ int p = s.find('(');
+ return p > 0 && p < s.findRev("int");
+}
+#endif
+/*!
+ Connects the signal to \a member in object \a receiver.
+ Returns true if the connection is successful.
+
+ \sa disconnect(), QObject::connect()
+*/
+
+bool Q3Signal::connect(const QObject *receiver, const char *member)
+{
+#ifndef QT_NO_VARIANT
+ if (intSignature(member))
+#endif
+ return QObject::connect((QObject *)this, SIGNAL(intSignal(int)), receiver, member);
+#ifndef QT_NO_VARIANT
+ return QObject::connect((QObject *)this, SIGNAL(signal(QVariant)),
+ receiver, member);
+#endif
+}
+
+/*!
+ Disonnects the signal from \a member in object \a receiver.
+ Returns true if the connection existed and the disconnect
+ was successful.
+
+ \sa connect(), QObject::disconnect()
+*/
+
+bool Q3Signal::disconnect(const QObject *receiver, const char *member)
+{
+ if (!member)
+ return QObject::disconnect((QObject *)this, 0, receiver, member);
+#ifndef QT_NO_VARIANT
+ if (intSignature(member))
+#endif
+ return QObject::disconnect((QObject *)this, SIGNAL(intSignal(int)), receiver, member);
+#ifndef QT_NO_VARIANT
+ return QObject::disconnect((QObject *)this, SIGNAL(signal(QVariant)),
+ receiver, member);
+#endif
+}
+
+
+/*!
+ \fn bool Q3Signal::isBlocked() const
+ \obsolete
+ Returns true if the signal is blocked, or false if it is not blocked.
+
+ The signal is not blocked by default.
+
+ \sa block(), QObject::signalsBlocked()
+*/
+
+/*!
+ \fn void Q3Signal::block(bool b)
+ \obsolete
+ Blocks the signal if \a b is true, or unblocks the signal if \a b is false.
+
+ An activated signal disappears into hyperspace if it is blocked.
+
+ \sa isBlocked(), activate(), QObject::blockSignals()
+*/
+
+
+/*!
+ \fn void Q3Signal::activate()
+
+ Emits the signal. If the platform supports QVariant and a
+ parameter has been set with setValue(), this value is passed in
+ the signal.
+*/
+void Q3Signal::activate()
+{
+#ifndef QT_NO_VARIANT
+ /* Create this Q3GuardedPtr on this, if we get destroyed after the intSignal (but before the variant signal)
+ we cannot just emit the signal (because val has been destroyed already) */
+ QPointer<Q3Signal> me = this;
+ if(me)
+ emit intSignal(val.toInt());
+ if(me)
+ emit signal(val);
+#else
+ emit intSignal(0);
+#endif
+}
+
+#ifndef QT_NO_VARIANT
+/*!
+ Sets the signal's parameter to \a value
+*/
+void Q3Signal::setValue(const QVariant &value)
+{
+ val = value;
+}
+
+/*!
+ Returns the signal's parameter
+*/
+QVariant Q3Signal::value() const
+{
+ return val;
+}
+/*! \fn void Q3Signal::signal(const QVariant &)
+ \internal
+*/
+/*! \fn void Q3Signal::intSignal(int)
+ \internal
+*/
+
+/*! \obsolete */
+void Q3Signal::setParameter(int value)
+{
+ val = value;
+}
+
+/*! \obsolete */
+int Q3Signal::parameter() const
+{
+ return val.toInt();
+}
+#endif //QT_NO_VARIANT
+
+QT_END_NAMESPACE