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diff --git a/src/knemod/interface.h b/src/knemod/interface.h
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+++ b/src/knemod/interface.h
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+/* This file is part of KNemo
+   Copyright (C) 2004, 2006 Percy Leonhardt <percy@eris23.de>
+
+   KNemo is free software; you can redistribute it and/or modify
+   it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of
+   the License, or (at your option) any later version.
+
+   KNemo 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 Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public License
+   along with this library; see the file COPYING.LIB.  If not, write to
+   the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+   Boston, MA 02110-1301, USA.
+*/
+
+#ifndef INTERFACE_H
+#define INTERFACE_H
+
+#include <qobject.h>
+#include <qstring.h>
+#include <qdatetime.h>
+
+#include "data.h"
+#include "global.h"
+#include "interfaceicon.h"
+#include "interfacemonitor.h"
+
+class QTimer;
+class SignalPlotter;
+class InterfaceStatistics;
+class InterfaceStatusDialog;
+class InterfaceStatisticsDialog;
+
+/**
+ * This class is the central place for all things that belong to an
+ * interface. It stores some information and knows about the interface
+ * data, icon, monitor and settings.
+ *
+ * @short Central class for every interface
+ * @author Percy Leonhardt <percy@eris23.de>
+ */
+class Interface : public QObject
+{
+    Q_OBJECT
+public:
+    /**
+     * Default Constructor
+     */
+    Interface(QString ifname,
+              const GeneralData& generalData,
+              const PlotterSettings& plotterSettings );
+
+    /**
+     * Default Destructor
+     */
+    virtual ~Interface();
+
+    void setType( int type )
+    {
+        mType = type;
+    }
+
+    int getType()
+    {
+        return mType;
+    }
+
+    void setState( int state )
+    {
+        mState = state;
+    }
+
+    int getState()
+    {
+        return mState;
+    }
+
+    const QDateTime& getStartTime() const
+    {
+        return mStartTime;
+    }
+
+    const QString& getName() const
+    {
+        return mName;
+    }
+
+    InterfaceData& getData()
+    {
+        return mData;
+    }
+
+    InterfaceSettings& getSettings()
+    {
+        return mSettings;
+    }
+
+    WirelessData& getWirelessData()
+    {
+        return mWirelessData;
+    }
+
+    const GeneralData& getGeneralData() const
+    {
+        return mGeneralData;
+    }
+
+    InterfaceStatistics* getStatistics()
+    {
+        return mStatistics;
+    }
+
+    /**
+     * Called from reparseConfiguration() when the user changed
+     * the settings.
+     */
+    void configChanged();
+
+    /**
+     * Called from the interface updater class after new data from
+     * 'ifconfig' has been read. This will trigger the monitor to
+     * to look for changes in interface data or interface state.
+     */
+    void activateMonitor();
+
+    enum InterfaceState
+    {
+        UNKNOWN_STATE = -1,
+        NOT_EXISTING  = 0,
+        NOT_AVAILABLE = 1,
+        AVAILABLE     = 2,
+        RX_TRAFFIC    = 4,
+        TX_TRAFFIC    = 8
+    };
+
+    enum InterfaceType
+    {
+        UNKNOWN_TYPE,
+        ETHERNET,
+        PPP
+    };
+
+    enum IconSet
+    {
+        MONITOR = 0,
+        MODEM,
+        NETWORK,
+        WIRELESS
+    };
+
+public slots:
+    /*
+     * Called when the user left-clicks on the tray icon
+     * Toggles the status dialog by showing it on the first click and
+     * hiding it on the second click.
+     */
+    void showStatusDialog();
+
+    /*
+     * Called when the user middle-clicks on the tray icon
+     * Toggles the signal plotter that displays the incoming and
+     * outgoing traffic.
+     */
+    void showSignalPlotter( bool wasMiddleButton );
+
+    /*
+     * Called when the user selects the appropriate entry in the context menu.
+     */
+    void showStatisticsDialog();
+
+    /*
+     * Reset data when PPP interface is disconnected
+     */
+    void resetData( int state );
+
+private slots:
+    /**
+     * Start the uptimer when the interface is connected
+     */
+    void setStartTime( int );
+
+    /**
+     * Update the signal plotter with new data
+     */
+    void updatePlotter();
+
+    /**
+     * Configure the signal plotter with user settings
+     */
+    void configurePlotter();
+
+private:
+    /**
+     * Start the statistics and load previously saved ones
+     */
+    void startStatistics();
+
+    /**
+     * Store the statistics and stop collecting any further data
+     */
+    void stopStatistics();
+
+    /**
+     * The following function is taken from ksystemtray.cpp for
+     * correct show, raise, focus and hide of status dialog and
+     * signal plotter.
+     */
+    void activateOrHide( QWidget* widget, bool onlyActivate = false );
+
+    enum VisibleBeams
+    {
+        NONE = 0,
+        INCOMING_TRAFFIC = 1,
+        OUTGOING_TRAFFIC = 2,
+        BOTH = 3
+    };
+
+    int mType;
+    int mState;
+    int mOutgoingPos;
+    int mIncomingPos;
+    QString mName;
+    QTimer* mPlotterTimer;
+    QDateTime mStartTime;
+    InterfaceIcon mIcon;
+    InterfaceData mData;
+    InterfaceMonitor mMonitor;
+    InterfaceSettings mSettings;
+    InterfaceStatistics* mStatistics;
+    WirelessData mWirelessData;
+    InterfaceStatusDialog* mStatusDialog;
+    InterfaceStatisticsDialog* mStatisticsDialog;
+    SignalPlotter* mPlotter;
+    VisibleBeams mVisibleBeams;
+    const GeneralData& mGeneralData;
+    const PlotterSettings& mPlotterSettings;
+};
+
+#endif // INTERFACE_H