Show a map for location events

src/models/locationsmodel.cpp

@@ -0,0 +1,102 @@
+// SPDX-FileCopyrightText: 2023 Tobias Fella <tobias.fella@kde.org>
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#include "locationsmodel.h"
+
+using namespace Quotient;
+
+LocationsModel::LocationsModel(QObject *parent)
+    : QAbstractListModel(parent)
+{
+    connect(this, &LocationsModel::roomChanged, this, [=]() {
+        for (const auto &event : m_room->messageEvents()) {
+            if (!is<RoomMessageEvent>(*event)) {
+                continue;
+            }
+            if (event->contentJson()["msgtype"] == "m.location") {
+                const auto &e = *event;
+                addLocation(eventCast<const RoomMessageEvent>(&e));
+            }
+        }
+        connect(m_room, &NeoChatRoom::aboutToAddHistoricalMessages, this, [=](const auto &events) {
+            for (const auto &event : events) {
+                if (!is<RoomMessageEvent>(*event)) {
+                    continue;
+                }
+                if (event->contentJson()["msgtype"] == "m.location") {
+                    const auto &e = *event;
+                    addLocation(eventCast<const RoomMessageEvent>(&e));
+                }
+            }
+        });
+        connect(m_room, &NeoChatRoom::aboutToAddNewMessages, this, [=](const auto &events) {
+            for (const auto &event : events) {
+                if (!is<RoomMessageEvent>(*event)) {
+                    continue;
+                }
+                if (event->contentJson()["msgtype"] == "m.location") {
+                    const auto &e = *event;
+                    addLocation(eventCast<const RoomMessageEvent>(&e));
+                }
+            }
+        });
+    });
+}
+
+void LocationsModel::addLocation(const RoomMessageEvent *event)
+{
+    const auto uri = event->contentJson()["org.matrix.msc3488.location"]["uri"].toString();
+    const auto parts = uri.mid(4).split(QLatin1Char(','));
+    const auto latitude = parts[0].toFloat();
+    const auto longitude = parts[1].toFloat();
+    beginInsertRows(QModelIndex(), m_locations.size(), m_locations.size() + 1);
+    m_locations += LocationData{
+        .eventId = event->id(),
+        .latitude = latitude,
+        .longitude = longitude,
+        .text = event->contentJson()["body"].toString(),
+        .author = dynamic_cast<NeoChatUser *>(m_room->user(event->senderId())),
+    };
+    endInsertRows();
+}
+
+NeoChatRoom *LocationsModel::room() const
+{
+    return m_room;
+}
+
+void LocationsModel::setRoom(NeoChatRoom *room)
+{
+    if (m_room) {
+        disconnect(this, nullptr, m_room, nullptr);
+    }
+    m_room = room;
+    Q_EMIT roomChanged();
+}
+
+QHash<int, QByteArray> LocationsModel::roleNames() const
+{
+    return {
+        {LongitudeRole, "longitude"},
+        {LatitudeRole, "latitude"},
+        {TextRole, "text"},
+    };
+}
+
+QVariant LocationsModel::data(const QModelIndex &index, int roleName) const
+{
+    auto row = index.row();
+    if (roleName == LongitudeRole) {
+        return m_locations[row].longitude;
+    } else if (roleName == LatitudeRole) {
+        return m_locations[row].latitude;
+    } else if (roleName == TextRole) {
+        return m_locations[row].text;
+    }
+    return {};
+}
+
+int LocationsModel::rowCount(const QModelIndex &parent) const
+{
+    return m_locations.size();
+}