setup electron app with boilerplate

cpp/src/particlelistmodel.cpp

@@ -0,0 +1,136 @@
+#include "particlelistmodel.h"
+#include <QApplication>
+#include <QBrush>
+#include <QColor>
+#include <QFont>
+#include <QStyle>
+
+ParticleListModel::ParticleListModel(Store *store, QObject *parent)
+    : QAbstractListModel(parent), m_store(store), m_currentStreamId()
+{
+  connect(m_store, &Store::particlesChanged, this, [this](const QString &streamId) {
+    if (streamId == m_currentStreamId)
+    {
+      beginResetModel();
+      endResetModel();
+    }
+  });
+
+  // Granular update: repaint a single row when a particle property changes
+  connect(m_store, &Store::particleUpdated, this, [this](const QString &streamId, const QString &particleId) {
+    if (streamId != m_currentStreamId)
+      return;
+    const QList<Particle> &particles = m_store->particlesForStream(m_currentStreamId);
+    for (int i = 0; i < particles.size(); ++i)
+    {
+      if (particles.at(i).id == particleId)
+      {
+        QModelIndex idx = index(i, 0);
+        emit dataChanged(idx, idx, {Qt::DisplayRole, Qt::ForegroundRole});
+        return;
+      }
+    }
+  });
+}
+
+int ParticleListModel::rowCount(const QModelIndex &parent) const
+{
+  if (parent.isValid())
+  {
+    return 0;
+  }
+
+  if (m_currentStreamId.isEmpty())
+  {
+    return 0;
+  }
+
+  return m_store->particleCount(m_currentStreamId);
+}
+
+QVariant ParticleListModel::data(const QModelIndex &index, int role) const
+{
+  if (!index.isValid())
+  {
+    return QVariant();
+  }
+
+  if (m_currentStreamId.isEmpty())
+  {
+    return QVariant();
+  }
+
+  const QList<Particle> &particles = m_store->particlesForStream(m_currentStreamId);
+
+  if (index.row() < 0 || index.row() >= particles.size())
+  {
+    return QVariant();
+  }
+
+  const Particle &particle = particles.at(index.row());
+
+  if (role == Qt::DisplayRole)
+  {
+    QString emailPrefix = particle.createdByEmail.split("@")[0];
+    QString summary = particle.data.value("content").toString();
+    if (summary.isEmpty())
+    {
+      summary = particle.type;
+    }
+    QString display = QString("[%1] - %2").arg(emailPrefix, summary);
+    return display;
+  }
+  else if (role == Qt::ForegroundRole)
+  {
+    // Make seen particles subtle grey, unseen stay default color
+    if (particle.seen)
+    {
+      return QBrush(QColor(128, 128, 128));  // Medium grey for seen items
+    }
+    // Unseen items use default foreground color
+  }
+
+  return QVariant();
+}
+
+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_store->particlesForStream(m_currentStreamId);
+  for (int i = 0; i < particles.size(); ++i)
+  {
+    if (!particles.at(i).seen)
+    {
+      return i;
+    }
+  }
+
+  return -1; // All seen or empty
+}
+
+const Particle *ParticleListModel::particleAtRow(int row) const
+{
+  if (m_currentStreamId.isEmpty())
+  {
+    return nullptr;
+  }
+
+  const QList<Particle> &particles = m_store->particlesForStream(m_currentStreamId);
+  if (row >= 0 && row < particles.size())
+  {
+    return &particles.at(row);
+  }
+
+  return nullptr;
+}