unipresent/kpresenter2/UpKpr2Process.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 UpKpr2Process.cpp
  22  * @brief KPresenter 2 process.
  23  * @author James Hogan <james@albanarts.com>
  24  */
  25
  26 #include "UpKpr2Process.h"
  27 #include "UpKpr2Presentation.h"
  28 #include "UpKpr2Backend.h"
  29
  30 #include "compiler.h"
  31
  32 #include <QDBusConnection>
  33 #include <QDBusInterface>
  34 #include <QDBusReply>
  35 #include <QStringList>
  36
  37 /*
  38  * Constructors + destructor
  39  */
  40
  41 /// Primary constructor.
  42 UpKpr2Process::UpKpr2Process(QString serviceName, UpKpr2Backend* parent)
  43 : QObject(parent)
  44 , m_backend(parent)
  45 , m_serviceName(serviceName)
  46 {
  47   // Set up document event signals so we know when to create/remove documents
  48   QDBusConnection::sessionBus().connect(serviceName, "/application", "org.kde.koffice.application", "documentOpened", this, SLOT(dbusPresentationOpened(QString)));
  49   QDBusConnection::sessionBus().connect(serviceName, "/application", "org.kde.koffice.application", "documentClosed", this, SLOT(dbusPresentationClosed(QString)));
  50
  51   // Get the current list of documents
  52   QDBusInterface application(m_serviceName, "/application", "org.kde.koffice.application");
  53   if (application.isValid())
  54   {
  55     QStringList docs = application.call("getDocuments").arguments().first().toStringList();
  56     foreach (QString doc, docs)
  57     {
  58       QDBusInterface application(m_serviceName, doc, "org.kde.koffice.document");
  59       int views = (QDBusReply<int>)application.call("viewCount");
  60       if (views > 0)
  61       {
  62         dbusPresentationOpened(doc);
  63       }
  64     }
  65   }
  66 }
  67
  68 /// Destructor.
  69 UpKpr2Process::~UpKpr2Process()
  70 {
  71   foreach (UpKpr2Presentation* pres, m_presentations)
  72   {
  73     unloadedPresentation(pres);
  74     delete pres;
  75   }
  76 }
  77
  78 /*
  79  * Basic accessors
  80  */
  81
  82 /// Get the service name.
  83 QString UpKpr2Process::serviceName() const
  84 {
  85   return m_serviceName;
  86 }
  87
  88 /// Get a list of presentations.
  89 QList<UpKpr2Presentation*> UpKpr2Process::presentations()
  90 {
  91   return m_presentations.values();
  92 }
  93
  94 /*
  95  * Private slots
  96  */
  97
  98 /// Indicates that a new presentation has been made available.
  99 void UpKpr2Process::dbusPresentationOpened(QString docName)
 100 {
 101   Q_ASSERT(!docName.isEmpty());
 102   StringHashPresentation::iterator it = m_presentations.find(docName);
 103   if (likely(m_presentations.end() == it))
 104   {
 105     UpKpr2Presentation* pres = new UpKpr2Presentation(m_serviceName, docName, m_backend, this);
 106     m_presentations[docName] = pres;
 107     loadedPresentation(pres);
 108   }
 109 }
 110
 111 /// Indicates that an old presentation is no longer available.
 112 void UpKpr2Process::dbusPresentationClosed(QString docName)
 113 {
 114   Q_ASSERT(!docName.isEmpty());
 115   StringHashPresentation::iterator it = m_presentations.find(docName);
 116   if (likely(m_presentations.end() != it))
 117   {
 118     UpKpr2Presentation* presentation = *it;
 119     m_presentations.erase(it);
 120     unloadedPresentation(presentation);
 121     delete presentation;
 122   }
 123 }
 124