feat: show fake data network, stream, and particles data

src/particlelistmodel.cpp

@@ -0,0 +1,79 @@
+#include "particlelistmodel.h"
+
+ParticleListModel::ParticleListModel(Data *data, QObject *parent)
+    : QAbstractListModel(parent), m_data(data), m_currentStreamId()
+{
+}
+
+int ParticleListModel::rowCount(const QModelIndex &parent) const
+{
+  if (parent.isValid())
+  {
+    return 0;
+  }
+
+  if (m_currentStreamId.isEmpty())
+  {
+    return 0;
+  }
+
+  return m_data->particleCount(m_currentStreamId);
+}
+
+QVariant ParticleListModel::data(const QModelIndex &index, int role) const
+{
+  if (!index.isValid() || role != Qt::DisplayRole)
+  {
+    return QVariant();
+  }
+
+  if (m_currentStreamId.isEmpty())
+  {
+    return QVariant();
+  }
+
+  const QList<Particle> &particles = m_data->particlesForStream(m_currentStreamId);
+
+  if (index.row() < 0 || index.row() >= particles.size())
+  {
+    return QVariant();
+  }
+
+  const Particle &particle = particles.at(index.row());
+
+  // Show dot (•) for unseen, nothing for seen
+  if (particle.seen)
+  {
+    return particle.type;
+  }
+  else
+  {
+    return QString("%1  •").arg(particle.type);
+  }
+}
+
+void ParticleListModel::setStreamId(const QString &streamId)
+{
+  beginResetModel();
+  m_currentStreamId = streamId;
+  endResetModel();
+}
+
+int ParticleListModel::firstUnseenRow() const
+{
+  if (m_currentStreamId.isEmpty())
+  {
+    return -1;
+  }
+
+  const QList<Particle> &particles = m_data->particlesForStream(m_currentStreamId);
+  for (int i = 0; i < particles.size(); ++i)
+  {
+    if (!particles.at(i).seen)
+    {
+      return i;
+    }
+  }
+
+  return -1;  // All seen or empty
+}