workspace/plasma/dataengines/soliddevice/soliddeviceengine.h

   1 /*
   2  *   Copyright (C) 2007 Christopher Blauvelt <cblauvelt@gmail.com>
   3  *
   4  *   This program is free software; you can redistribute it and/or modify
   5  *   it under the terms of the GNU Library General Public License version 2 as
   6  *   published by the Free Software Foundation
   7  *
   8  *   This program is distributed in the hope that it will be useful,
   9  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  10  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  11  *   GNU General Public License for more details
  12  *
  13  *   You should have received a copy of the GNU Library General Public
  14  *   License along with this program; if not, write to the
  15  *   Free Software Foundation, Inc.,
  16  *   51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  17  */
  18
  19 #ifndef SOLIDDEVICEENGINE_H
  20 #define SOLIDDEVICEENGINE_H
  21
  22 #include <QObject>
  23 #include <QString>
  24 #include <QList>
  25 #include <QMap>
  26
  27 #include <solid/devicenotifier.h>
  28 #include <solid/device.h>
  29 #include <solid/deviceinterface.h>
  30 #include <solid/predicate.h>
  31
  32 #include "plasma/dataengine.h"
  33 #include "devicesignalmapmanager.h"
  34 #include "devicesignalmapper.h"
  35
  36 /**
  37  * This class evaluates the basic expressions given in the interface.
  38  */
  39 class SolidDeviceEngine : public Plasma::DataEngine
  40 {
  41     Q_OBJECT
  42
  43 public:
  44     SolidDeviceEngine( QObject* parent, const QVariantList& args);
  45     ~SolidDeviceEngine();
  46
  47 protected:
  48     bool sourceRequested(const QString &name);
  49     bool updateSource(const QString& source);
  50
  51 private:
  52     bool populateDeviceData(const QString &name);
  53     qlonglong freeDiskSpace(const QString &mountPoint);
  54     bool updateFreeSpace(const QString &udi);
  55     void listenForNewDevices();
  56
  57     QStringList devicelist;
  58
  59     //predicate in string form, list of devices by udi
  60     QMap<QString, QStringList> predicatemap;
  61     //udi, corresponding device
  62     QMap<QString, Solid::Device> devicemap;
  63     DeviceSignalMapManager *signalmanager;
  64
  65     Solid::DeviceNotifier *notifier;
  66
  67 private Q_SLOTS:
  68     void deviceAdded(const QString &udi);
  69     void deviceRemoved(const QString &udi);
  70     void deviceChanged(const QString& udi, const QString &property, const QVariant &value);
  71 };
  72
  73 K_EXPORT_PLASMA_DATAENGINE(soliddevice, SolidDeviceEngine)
  74
  75 #endif