src/uisupport/bufferviewoverlayfilter.cpp

   1 /***************************************************************************
   2  *   Copyright (C) 2005-2013 by the Quassel Project                        *
   3  *   devel@quassel-irc.org                                                 *
   4  *                                                                         *
   5  *   This program is free software; you can redistribute it and/or modify  *
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   7  *   the Free Software Foundation; either version 2 of the License, or     *
   8  *   (at your option) version 3.                                           *
   9  *                                                                         *
  10  *   This program is distributed in the hope that it will be useful,       *
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  12  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  13  *   GNU General Public License for more details.                          *
  14  *                                                                         *
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  20
  21 #include "bufferviewoverlayfilter.h"
  22
  23 #include "bufferviewoverlay.h"
  24 #include "networkmodel.h"
  25 #include "types.h"
  26
  27 BufferViewOverlayFilter::BufferViewOverlayFilter(QAbstractItemModel *model, BufferViewOverlay *overlay)
  28     : QSortFilterProxyModel(model),
  29     _overlay(0)
  30 {
  31     setOverlay(overlay);
  32     setSourceModel(model);
  33
  34     setDynamicSortFilter(true);
  35 }
  36
  37
  38 void BufferViewOverlayFilter::setOverlay(BufferViewOverlay *overlay)
  39 {
  40     if (_overlay == overlay)
  41         return;
  42
  43     if (_overlay) {
  44         disconnect(_overlay, 0, this, 0);
  45     }
  46
  47     _overlay = overlay;
  48
  49     if (!overlay) {
  50         invalidate();
  51         return;
  52     }
  53
  54     connect(overlay, SIGNAL(destroyed()), this, SLOT(overlayDestroyed()));
  55     connect(overlay, SIGNAL(hasChanged()), this, SLOT(invalidate()));
  56     invalidate();
  57 }
  58
  59
  60 void BufferViewOverlayFilter::overlayDestroyed()
  61 {
  62     setOverlay(0);
  63 }
  64
  65
  66 bool BufferViewOverlayFilter::filterAcceptsRow(int source_row, const QModelIndex &source_parent) const
  67 {
  68     if (!_overlay)
  69         return false;
  70
  71     QModelIndex source_bufferIndex = sourceModel()->index(source_row, 0, source_parent);
  72
  73     if (!source_bufferIndex.isValid()) {
  74         qWarning() << "filterAcceptsRow has been called with an invalid Child";
  75         return false;
  76     }
  77
  78     NetworkModel::ItemType itemType = (NetworkModel::ItemType)sourceModel()->data(source_bufferIndex, NetworkModel::ItemTypeRole).toInt();
  79
  80     NetworkId networkId = sourceModel()->data(source_bufferIndex, NetworkModel::NetworkIdRole).value<NetworkId>();
  81     if (!_overlay->networkIds().contains(networkId) && !_overlay->allNetworks()) {
  82         return false;
  83     }
  84     else if (itemType == NetworkModel::NetworkItemType) {
  85         // network items don't need further checks.
  86         return true;
  87     }
  88
  89     int activityLevel = sourceModel()->data(source_bufferIndex, NetworkModel::BufferActivityRole).toInt();
  90     if (_overlay->minimumActivity() > activityLevel)
  91         return false;
  92
  93     int bufferType = sourceModel()->data(source_bufferIndex, NetworkModel::BufferTypeRole).toInt();
  94     if (!(_overlay->allowedBufferTypes() & bufferType))
  95         return false;
  96
  97     BufferId bufferId = sourceModel()->data(source_bufferIndex, NetworkModel::BufferIdRole).value<BufferId>();
  98     Q_ASSERT(bufferId.isValid());
  99
 100     if (_overlay->bufferIds().contains(bufferId))
 101         return true;
 102
 103     if (_overlay->tempRemovedBufferIds().contains(bufferId))
 104         return activityLevel > BufferInfo::OtherActivity;
 105
 106     if (_overlay->removedBufferIds().contains(bufferId))
 107         return false;
 108
 109     // the buffer is not known to us
 110     qDebug() << "BufferViewOverlayFilter::filterAcceptsRow()" << bufferId << "is unknown!";
 111     return false;
 112 }