kworship/KwPluginManager.cpp

   1 /***************************************************************************
   2  *   This file is part of KWorship.                                        *
   3  *   Copyright 2008 James Hogan <james@albanarts.com>                      *
   4  *                                                                         *
   5  *   KWorship is free software: you can redistribute it and/or modify      *
   6  *   it under the terms of the GNU General Public License as published by  *
   7  *   the Free Software Foundation, either version 2 of the License, or     *
   8  *   (at your option) any later version.                                   *
   9  *                                                                         *
  10  *   KWorship is distributed in the hope that it will be useful,           *
  11  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  12  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  13  *   GNU General Public License for more details.                          *
  14  *                                                                         *
  15  *   You should have received a copy of the GNU General Public License     *
  16  *   along with KWorship.  If not, write to the Free Software Foundation,  *
  17  *   Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.   *
  18  ***************************************************************************/
  19
  20 /**
  21  * @file KwPluginManager.cpp
  22  * @brief Manages KWorship plugins.
  23  * @author James Hogan <james@albanarts.com>
  24  */
  25
  26 #include "KwPluginManager.h"
  27 #include "KwPlugin.h"
  28
  29 #include <KServiceTypeTrader>
  30
  31 /*
  32  * Constructors + destructor
  33  */
  34
  35 /// Primary constructor.
  36 KwPluginManager::KwPluginManager()
  37 : m_plugins()
  38 {
  39 }
  40
  41 /// Destructor.
  42 KwPluginManager::~KwPluginManager()
  43 {
  44   foreach (KwPlugin* plugin, m_plugins)
  45   {
  46     plugin->unload();
  47     delete plugin;
  48   }
  49 }
  50
  51 /*
  52  * Plugin loading and unloading
  53  */
  54
  55 /// Directly load a plugin.
  56 bool KwPluginManager::loadPlugin(KwPlugin* plugin)
  57 {
  58   const QString& id = plugin->id();
  59   Q_ASSERT(!plugin->isLoaded());
  60   if (!m_plugins.contains(id))
  61   {
  62     m_plugins[id] = plugin;
  63     plugin->load();
  64     return true;
  65   }
  66   return false;
  67 }
  68
  69 #include <QtDebug>
  70 /// Load all plugins.
  71 void KwPluginManager::loadPlugins()
  72 {
  73   KService::List offers = KServiceTypeTrader::self()->query("KWorship/Plugin");
  74
  75   foreach (KService::Ptr service, offers)
  76   {
  77     qDebug() << "Found KWorship plugin: " << service->desktopEntryName();
  78     QString err;
  79     KwPlugin* plugin = service->createInstance<KwPlugin>(this, QVariantList(), &err);
  80     if (plugin)
  81     {
  82       bool loaded = loadPlugin(plugin);
  83       if (loaded)
  84       {
  85         qDebug() << "  Loaded successfully";
  86       }
  87       else
  88       {
  89         qDebug() << "  Could not be initialised";
  90       }
  91     }
  92     else
  93     {
  94       qDebug() << "  Could not be loaded: " << err;
  95     }
  96   }
  97 }
  98