workspace/powerdevil/daemon/PollSystemLoader.cpp

   1 /***************************************************************************
   2  *   Copyright (C) 2008 by Dario Freddi <drf@kdemod.ath.cx>                *
   3  *                                                                         *
   4  *   This program is free software; you can redistribute it and/or modify  *
   5  *   it under the terms of the GNU General Public License as published by  *
   6  *   the Free Software Foundation; either version 2 of the License, or     *
   7  *   (at your option) any later version.                                   *
   8  *                                                                         *
   9  *   This program is distributed in the hope that it will be useful,       *
  10  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  11  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  12  *   GNU General Public License for more details.                          *
  13  *                                                                         *
  14  *   You should have received a copy of the GNU General Public License     *
  15  *   along with this program; if not, write to the                         *
  16  *   Free Software Foundation, Inc.,                                       *
  17  *   51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA .        *
  18  **************************************************************************/
  19
  20 #include "PollSystemLoader.h"
  21
  22 #include "WidgetBasedPoller.h"
  23 #include "XSyncBasedPoller.h"
  24 #include "TimerBasedPoller.h"
  25
  26 PollSystemLoader::PollSystemLoader(QObject *parent)
  27         : QObject(parent),
  28         m_poller(0)
  29 {
  30     reloadAvailableCache();
  31 }
  32
  33 PollSystemLoader::~PollSystemLoader()
  34 {
  35     unloadCurrentSystem();
  36 }
  37
  38 void PollSystemLoader::reloadAvailableCache()
  39 {
  40     m_availableSystems.clear();
  41
  42     // Test each polling system
  43     WidgetBasedPoller *wpl = new WidgetBasedPoller(this);
  44     XSyncBasedPoller *xpl = XSyncBasedPoller::instance();
  45     TimerBasedPoller *tpl = new TimerBasedPoller(this);
  46
  47     if (wpl->isAvailable()) {
  48         m_availableSystems[AbstractSystemPoller::WidgetBased] = wpl->name();
  49     }
  50     if (xpl->isAvailable()) {
  51         m_availableSystems[AbstractSystemPoller::XSyncBased] = xpl->name();
  52     }
  53     if (tpl->isAvailable()) {
  54         m_availableSystems[AbstractSystemPoller::TimerBased] = tpl->name();
  55     }
  56
  57     wpl->deleteLater();
  58     tpl->deleteLater();
  59 }
  60
  61 QMap<AbstractSystemPoller::PollingType, QString> PollSystemLoader::getAvailableSystems()
  62 {
  63     // Cached
  64     return m_availableSystems;
  65 }
  66
  67 QMap<int, QString> PollSystemLoader::getAvailableSystemsAsInt()
  68 {
  69     // Cached
  70
  71     QMap<int, QString> retlist;
  72
  73     foreach(const AbstractSystemPoller::PollingType &ent, m_availableSystems.keys()) {
  74         retlist[(int) ent] = m_availableSystems[ent];
  75     }
  76
  77     return retlist;
  78 }
  79
  80 bool PollSystemLoader::loadSystem(AbstractSystemPoller::PollingType type)
  81 {
  82     if (m_poller) {
  83         if (m_poller->getPollingType() == type) {
  84             return true;
  85         } else {
  86             unloadCurrentSystem();
  87         }
  88     }
  89
  90     switch (type) {
  91     case AbstractSystemPoller::WidgetBased:
  92         m_poller = new WidgetBasedPoller(this);
  93         break;
  94     case AbstractSystemPoller::TimerBased:
  95         m_poller = new TimerBasedPoller(this);
  96         break;
  97     case AbstractSystemPoller::XSyncBased:
  98         m_poller = XSyncBasedPoller::instance();
  99         break;
 100     default:
 101         return false;
 102         break;
 103     }
 104
 105     if (!m_poller->isAvailable()) {
 106         return false;
 107     }
 108
 109     if (!m_poller->setUpPoller()) {
 110         return false;
 111     }
 112
 113     return true;
 114 }
 115
 116 bool PollSystemLoader::unloadCurrentSystem()
 117 {
 118     if (m_poller) {
 119         m_poller->unloadPoller();
 120
 121         if (m_poller->getPollingType() != AbstractSystemPoller::XSyncBased) {
 122             m_poller->deleteLater();
 123         }
 124     }
 125
 126     return true;
 127 }
 128
 129 #include "PollSystemLoader.moc"