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bufferviewoverlayfilter.cpp
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20 
22 
23 #include "bufferviewoverlay.h"
24 #include "networkmodel.h"
25 #include "types.h"
26 
28  : QSortFilterProxyModel(model),
29  _overlay(0)
30 {
31  setOverlay(overlay);
32  setSourceModel(model);
33 
34  setDynamicSortFilter(true);
35 }
36 
37 
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 
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 }