File indexing completed on 2024-04-28 04:59:36

 // SPDX-FileCopyrightText: 2022 James Graham <james.h.graham@protonmail.com>
 // SPDX-License-Identifier: GPL-2.0-only OR GPL-3.0-only OR LicenseRef-KDE-Accepted-GPL
 
 #pragma once
 
 #include <QAbstractListModel>
 #include <QConcatenateTablesProxyModel>
 #include <QQmlEngine>
 
 #include "messageeventmodel.h"
 #include "neochatroom.h"
 
 /**
  * @class TimelineEndModel
  *
  * A model to provide a single delegate to mark the end of the timeline.
  *
  * The delegate will either be a loading delegate if more events are being loaded
  * or a timeline end delegate if all history is loaded.
  */
 class TimelineEndModel : public QAbstractListModel
 {
     Q_OBJECT
     QML_ELEMENT
 
 public:
     /**
      * @brief Defines the model roles.
      */
     enum Roles {
         DelegateTypeRole = MessageEventModel::DelegateTypeRole, /**< The delegate type of the message. */
     };
     Q_ENUM(Roles)
 
     explicit TimelineEndModel(QObject *parent = nullptr);
 
     /**
      * @brief Set the room for the timeline.
      */
     void setRoom(NeoChatRoom *room);
 
     /**
      * @brief Get the given role value at the given index.
      *
      * @sa QAbstractItemModel::data
      */
     [[nodiscard]] QVariant data(const QModelIndex &idx, int role = Qt::DisplayRole) const override;
 
     /**
      * @brief 1, the answer is always 1.
      *
      * @sa  QAbstractItemModel::rowCount
      */
     [[nodiscard]] int rowCount(const QModelIndex &parent = QModelIndex()) const override;
 
     /**
      * @brief Returns a map with DelegateTypeRole it's the only one.
      *
      * @sa Roles, QAbstractItemModel::roleNames()
      */
     [[nodiscard]] QHash<int, QByteArray> roleNames() const override;
 
 private:
     NeoChatRoom *m_room = nullptr;
 };
 
 /**
  * @class TimelineModel
  *
  * A model to visualise a room timeline.
  *
  * This model combines a MessageEventModel with a TimelineEndModel.
  *
  * @sa MessageEventModel, TimelineEndModel
  */
 class TimelineModel : public QConcatenateTablesProxyModel
 {
     Q_OBJECT
     QML_ELEMENT
 
     /**
      * @brief The current room that the model is getting its messages from.
      */
     Q_PROPERTY(NeoChatRoom *room READ room WRITE setRoom NOTIFY roomChanged)
 
     /**
      * @brief The MessageEventModel for the timeline.
      */
     Q_PROPERTY(MessageEventModel *messageEventModel READ messageEventModel CONSTANT)
 
 public:
     TimelineModel(QObject *parent = nullptr);
 
     [[nodiscard]] NeoChatRoom *room() const;
     void setRoom(NeoChatRoom *room);
 
     MessageEventModel *messageEventModel() const;
 
     /**
      * @brief Returns a mapping from Role enum values to role names.
      *
      * @sa Roles, QAbstractProxyModel::roleNames()
      */
     [[nodiscard]] QHash<int, QByteArray> roleNames() const override;
 
 Q_SIGNALS:
     void roomChanged();
 
 private:
     MessageEventModel *m_messageEventModel = nullptr;
     TimelineEndModel *m_timelineEndModel = nullptr;
 };