0f9eb4beeb
Make sure that the neochat can handle switching connection when the current one is logged out. This is mostly about using QPointer to handle use after free issues due to room objects being deleted.
113 lines
2.8 KiB
C++
113 lines
2.8 KiB
C++
// SPDX-FileCopyrightText: 2022 James Graham <james.h.graham@protonmail.com>
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// SPDX-License-Identifier: GPL-2.0-only OR GPL-3.0-only OR LicenseRef-KDE-Accepted-GPL
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#pragma once
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#include <QAbstractListModel>
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#include <QConcatenateTablesProxyModel>
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#include <QQmlEngine>
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#include "messageeventmodel.h"
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#include "neochatroom.h"
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/**
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* @class TimelineEndModel
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*
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* A model to provide a single delegate to mark the end of the timeline.
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*
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* The delegate will either be a loading delegate if more events are being loaded
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* or a timeline end delegate if all history is loaded.
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*/
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class TimelineEndModel : public QAbstractListModel
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{
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Q_OBJECT
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QML_ELEMENT
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public:
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/**
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* @brief Defines the model roles.
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*/
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enum Roles {
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DelegateTypeRole = MessageEventModel::DelegateTypeRole, /**< The delegate type of the message. */
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};
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Q_ENUM(Roles)
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explicit TimelineEndModel(QObject *parent = nullptr);
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/**
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* @brief Set the room for the timeline.
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*/
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void setRoom(NeoChatRoom *room);
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/**
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* @brief Get the given role value at the given index.
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*
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* @sa QAbstractItemModel::data
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*/
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[[nodiscard]] QVariant data(const QModelIndex &idx, int role = Qt::DisplayRole) const override;
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/**
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* @brief 1, the answer is always 1.
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*
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* @sa QAbstractItemModel::rowCount
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*/
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[[nodiscard]] int rowCount(const QModelIndex &parent = QModelIndex()) const override;
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/**
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* @brief Returns a map with DelegateTypeRole it's the only one.
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*
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* @sa Roles, QAbstractItemModel::roleNames()
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*/
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[[nodiscard]] QHash<int, QByteArray> roleNames() const override;
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private:
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QPointer<NeoChatRoom> m_room = nullptr;
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};
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/**
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* @class TimelineModel
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*
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* A model to visualise a room timeline.
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*
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* This model combines a MessageEventModel with a TimelineEndModel.
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*
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* @sa MessageEventModel, TimelineEndModel
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*/
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class TimelineModel : public QConcatenateTablesProxyModel
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{
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Q_OBJECT
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QML_ELEMENT
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/**
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* @brief The current room that the model is getting its messages from.
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*/
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Q_PROPERTY(NeoChatRoom *room READ room WRITE setRoom NOTIFY roomChanged)
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/**
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* @brief The MessageEventModel for the timeline.
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*/
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Q_PROPERTY(MessageEventModel *messageEventModel READ messageEventModel CONSTANT)
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public:
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TimelineModel(QObject *parent = nullptr);
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[[nodiscard]] NeoChatRoom *room() const;
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void setRoom(NeoChatRoom *room);
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MessageEventModel *messageEventModel() const;
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/**
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* @brief Returns a mapping from Role enum values to role names.
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*
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* @sa Roles, QAbstractProxyModel::roleNames()
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*/
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[[nodiscard]] QHash<int, QByteArray> roleNames() const override;
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Q_SIGNALS:
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void roomChanged();
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private:
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MessageEventModel *m_messageEventModel = nullptr;
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TimelineEndModel *m_timelineEndModel = nullptr;
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};
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