unipresent/common/UpBackendNode.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 UpBackendNode.cpp
  22  * @brief A presentations node for a backend.
  23  * @author James Hogan <james@albanarts.com>
  24  */
  25
  26 #include "UpBackendNode.h"
  27 #include "UpBackend.h"
  28 #include "UpPresentationNode.h"
  29
  30 #include <KIcon>
  31
  32 #include <cassert>
  33
  34 /*
  35  * Constructors + destructor.
  36  */
  37
  38 /// Primary constructor.
  39 UpBackendNode::UpBackendNode(DefaultModelNode* parent, UpBackend* item)
  40 : DefaultModelNode(parent)
  41 , m_item(item)
  42 {
  43 }
  44
  45 /// Destructor.
  46 UpBackendNode::~UpBackendNode()
  47 {
  48 }
  49
  50 /*
  51  * Accessors
  52  */
  53
  54 UpBackend* UpBackendNode::getItem()
  55 {
  56   return m_item;
  57 }
  58
  59 UpPresentationNode* UpBackendNode::getPresentationNode(UpPresentation* presentation)
  60 {
  61   int numPresentations = getNumCachedChildren();
  62   for (int i = 0; i < numPresentations; ++i)
  63   {
  64     UpPresentationNode* node = dynamic_cast<UpPresentationNode*>(getCachedChild(i));
  65     if (0 != node && node->getItem() == presentation)
  66     {
  67       return node;
  68     }
  69   }
  70   return 0;
  71 }
  72
  73 /*
  74  * Main interface
  75  */
  76
  77 QVariant UpBackendNode::getData(int role, int column)
  78 {
  79   if (role == Qt::DisplayRole)
  80   {
  81     if (column == 0)
  82     {
  83       return m_item->name();
  84     }
  85   }
  86   else if (role == Qt::DecorationRole)
  87   {
  88     if (column == 0)
  89     {
  90       return m_item->icon();
  91     }
  92   }
  93   return QVariant();
  94 }
  95
  96 int UpBackendNode::getChildCount() const
  97 {
  98   return m_item->presentations().size();
  99 }
 100
 101 DefaultModelNode* UpBackendNode::_getChild(int index)
 102 {
 103   QList<UpPresentation*> presentations = m_item->presentations();
 104   UpPresentation* presentation = presentations.at(index);
 105   return new UpPresentationNode(this, presentation);
 106 }
 107