Discover remote sessions

Adds a way of discovering remote sessions and in Jellyfin the UI.

core/include/JellyfinQt/viewmodel/remotedevice.h

@@ -0,0 +1,118 @@
+/*
+ * Sailfin: a Jellyfin client written using Qt
+ * Copyright (C) 2022 Chris Josten and the Sailfin Contributors.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+#ifndef JELLYFIN_VIEWMODEL_REMOTEDEVICE_H
+#define JELLYFIN_VIEWMODEL_REMOTEDEVICE_H
+
+#include <JellyfinQt/model/controllablesession.h>
+
+#include <QAbstractItemModel>
+#include <QList>
+#include <QObject>
+#include <QQmlParserStatus>
+#include <QSharedPointer>
+
+#include <utility>
+
+namespace Jellyfin {
+
+class ApiClient;
+
+namespace ViewModel {
+
+class PlaybackManager;
+
+/**
+ * @brief AbstractListModel of remotely controllable devices by JellyfinQt.
+ *
+ * This class controls a set of \link ViewModel::RemoteSessionScanner RemoteSessionScanners\endlink and
+ * puts their found devices in this list.
+ */
+class RemoteDeviceList : public QAbstractListModel, public QQmlParserStatus {
+    Q_OBJECT
+    Q_INTERFACES(QQmlParserStatus)
+
+    /**
+     * The ApiClient for interacting with the Jellyfin API.
+     */
+    Q_PROPERTY(Jellyfin::ApiClient* apiClient READ apiClient WRITE setApiClient NOTIFY apiClientChanged)
+    /**
+     * Gets/sets whether the model is scanning for other devices.
+     */
+    Q_PROPERTY(bool scanning READ scanning WRITE setScanning NOTIFY scanningChanged);
+public:
+    enum RoleNames {
+        jellyfinId = Qt::UserRole + 1,
+        name,
+        deviceName,
+        deviceType,
+        userName,
+        session
+    };
+
+    explicit RemoteDeviceList(QObject *parent = nullptr);
+
+    ApiClient *apiClient() const { return m_apiClient; }
+    void setApiClient(ApiClient *apiClient);
+
+    bool scanning() const { return m_scanning; }
+    void setScanning(bool scanning);
+
+    // QAbstractListModel
+    int rowCount(const QModelIndex &parent = QModelIndex()) const override;
+    QVariant data(const QModelIndex &index, int role) const override;
+    QHash<int, QByteArray> roleNames() const override {
+        return {
+            { RoleNames::jellyfinId, "jellyfinId"},
+            { RoleNames::name,       "name"       },
+            { RoleNames::deviceName, "deviceName" },
+            { RoleNames::deviceType, "deviceType" },
+            { RoleNames::userName,   "userName"   },
+            { RoleNames::session,    "session"    }
+        };
+    }
+
+    /**
+     * @brief Sets the PlaybackManager to control the session at the given index in this model
+     * @param manager The PlaybackManager
+     * @param index The index of the session that should be controlled
+     */
+    Q_INVOKABLE void activateSession(Jellyfin::ViewModel::PlaybackManager *manager, int index);
+
+    // QQmlParserStatus
+    void classBegin() override;
+    void componentComplete() override;
+signals:
+    void apiClientChanged();
+    void scanningChanged();
+private slots:
+    void onSessionFound(Jellyfin::Model::ControllableSession * session);
+    void onSessionLost(QString sessionId);
+    void onSessionsReset();
+private:
+    ApiClient *m_apiClient = nullptr;
+    bool m_scanning = false;
+    bool m_componentComplete = false;
+    QList<std::pair<Model::RemoteSessionScanner *, QSharedPointer<Model::ControllableSession>>> m_sessions;
+    QList<Model::RemoteSessionScanner *> m_scanners;
+};
+
+} // NS ViewModel
+} // NS Jellyfin
+
+#endif // JELLYFIN_VIEWMODEL_REMOTEDEVICE_H