Message Content Rework
For now everything should look identical. However this moves to using a model for the content of the message and is intended to lay the foundation for improved message content representation, e.g. splitting up a text message in multiple sections and using different delegates for things like code and quotes.
This commit is contained in:
James Graham
245
src/models/messagecontentmodel.cpp
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245
src/models/messagecontentmodel.cpp
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// SPDX-FileCopyrightText: 2024 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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#include "messagecontentmodel.h"
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#include <Quotient/events/redactionevent.h>
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#include <Quotient/events/stickerevent.h>
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#include <KLocalizedString>
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#include "chatbarcache.h"
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#include "enums/messagecomponenttype.h"
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#include "eventhandler.h"
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#include "linkpreviewer.h"
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#include "neochatroom.h"
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MessageContentModel::MessageContentModel(const Quotient::RoomEvent *event, NeoChatRoom *room)
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: QAbstractListModel(nullptr)
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, m_room(room)
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, m_event(event)
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{
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if (m_room != nullptr) {
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connect(m_room, &NeoChatRoom::pendingEventAboutToMerge, this, [this](Quotient::RoomEvent *serverEvent) {
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if (m_room != nullptr && m_event != nullptr) {
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if (m_event->id() == serverEvent->id()) {
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beginResetModel();
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m_event = serverEvent;
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endResetModel();
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}
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}
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});
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connect(m_room, &NeoChatRoom::replacedEvent, this, [this](const Quotient::RoomEvent *newEvent) {
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if (m_room != nullptr && m_event != nullptr) {
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if (m_event->id() == newEvent->id()) {
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beginResetModel();
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m_event = newEvent;
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endResetModel();
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}
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}
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});
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connect(m_room, &NeoChatRoom::replyLoaded, this, [this](const QString &eventId, const QString &replyId) {
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Q_UNUSED(eventId)
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if (m_event != nullptr && m_event != nullptr) {
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const auto eventHandler = EventHandler(m_room, m_event);
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if (replyId == eventHandler.getReplyId()) {
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// HACK: Because DelegateChooser can't switch the delegate on dataChanged it has to think there is a new delegate.
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beginResetModel();
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m_components[0] = MessageComponentType::Reply;
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endResetModel();
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}
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}
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});
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connect(m_room, &NeoChatRoom::newFileTransfer, this, [this](const QString &eventId) {
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if (m_event != nullptr && m_event != nullptr && eventId == m_event->id()) {
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Q_EMIT dataChanged(index(0), index(rowCount() - 1), {FileTransferInfoRole});
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}
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});
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connect(m_room, &NeoChatRoom::fileTransferProgress, this, [this](const QString &eventId) {
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if (m_event != nullptr && m_event != nullptr && eventId == m_event->id()) {
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Q_EMIT dataChanged(index(0), index(rowCount() - 1), {FileTransferInfoRole});
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}
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});
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connect(m_room, &NeoChatRoom::fileTransferCompleted, this, [this](const QString &eventId) {
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if (m_event != nullptr && m_event != nullptr && eventId == m_event->id()) {
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Q_EMIT dataChanged(index(0), index(rowCount() - 1), {FileTransferInfoRole});
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}
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});
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connect(m_room, &NeoChatRoom::fileTransferFailed, this, [this](const QString &eventId) {
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if (m_event != nullptr && m_event != nullptr && eventId == m_event->id()) {
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Q_EMIT dataChanged(index(0), index(rowCount() - 1), {FileTransferInfoRole});
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}
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});
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connect(m_room->editCache(), &ChatBarCache::relationIdChanged, this, [this](const QString &oldEventId, const QString &newEventId) {
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if (m_event != nullptr && (oldEventId == m_event->id() || newEventId == m_event->id())) {
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// HACK: Because DelegateChooser can't switch the delegate on dataChanged it has to think there is a new delegate.
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beginResetModel();
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endResetModel();
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}
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});
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}
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if (const auto event = eventCast<const Quotient::RoomMessageEvent>(m_event)) {
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if (LinkPreviewer::hasPreviewableLinks(event)) {
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m_linkPreviewer = new LinkPreviewer(m_room, event, this);
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connect(m_linkPreviewer, &LinkPreviewer::loadedChanged, [this]() {
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if (m_linkPreviewer->loaded()) {
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// HACK: Because DelegateChooser can't switch the delegate on dataChanged it has to think there is a new delegate.
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beginResetModel();
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m_components[m_components.size() - 1] = MessageComponentType::LinkPreview;
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endResetModel();
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}
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});
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}
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}
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updateComponents();
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}
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static LinkPreviewer *emptyLinkPreview = new LinkPreviewer;
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QVariant MessageContentModel::data(const QModelIndex &index, int role) const
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{
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if (!index.isValid()) {
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return {};
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}
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if (index.row() >= rowCount()) {
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qDebug() << "MessageContentModel, something's wrong: index.row() >= rowCount()";
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return {};
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}
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EventHandler eventHandler(m_room, m_event);
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if (role == DisplayRole) {
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if (m_event->isRedacted()) {
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auto reason = m_event->redactedBecause()->reason();
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return (reason.isEmpty()) ? i18n("<i>[This message was deleted]</i>")
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: i18n("<i>[This message was deleted: %1]</i>", m_event->redactedBecause()->reason());
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}
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return eventHandler.getRichBody();
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}
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if (role == ComponentTypeRole) {
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const auto component = m_components[index.row()];
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if (component == MessageComponentType::Text && !m_event->id().isEmpty() && m_room->editCache()->editId() == m_event->id()) {
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return MessageComponentType::Edit;
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}
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return component;
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}
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if (role == EventIdRole) {
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return eventHandler.getId();
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}
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if (role == AuthorRole) {
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return eventHandler.getAuthor(false);
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}
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if (role == MediaInfoRole) {
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return eventHandler.getMediaInfo();
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}
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if (role == FileTransferInfoRole) {
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if (auto event = eventCast<const Quotient::RoomMessageEvent>(m_event)) {
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if (event->hasFileContent()) {
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return QVariant::fromValue(m_room->fileTransferInfo(event->id()));
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}
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}
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if (auto event = eventCast<const Quotient::StickerEvent>(m_event)) {
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return QVariant::fromValue(m_room->fileTransferInfo(event->id()));
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}
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}
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if (role == LatitudeRole) {
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return eventHandler.getLatitude();
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}
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if (role == LongitudeRole) {
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return eventHandler.getLongitude();
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}
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if (role == AssetRole) {
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return eventHandler.getLocationAssetType();
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}
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if (role == PollHandlerRole) {
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return QVariant::fromValue<PollHandler *>(m_room->poll(m_event->id()));
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}
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if (role == IsReplyRole) {
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return eventHandler.hasReply();
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}
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if (role == ReplyComponentType) {
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return eventHandler.replyMessageComponentType();
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}
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if (role == ReplyEventIdRole) {
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return eventHandler.getReplyId();
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}
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if (role == ReplyAuthorRole) {
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return eventHandler.getReplyAuthor();
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}
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if (role == ReplyDisplayRole) {
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return eventHandler.getReplyRichBody();
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}
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if (role == ReplyMediaInfoRole) {
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return eventHandler.getReplyMediaInfo();
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}
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if (role == LinkPreviewerRole) {
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if (m_linkPreviewer != nullptr) {
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return QVariant::fromValue<LinkPreviewer *>(m_linkPreviewer);
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} else {
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return QVariant::fromValue<LinkPreviewer *>(emptyLinkPreview);
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}
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}
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return {};
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}
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int MessageContentModel::rowCount(const QModelIndex &parent) const
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{
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Q_UNUSED(parent)
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return m_components.size();
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}
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QHash<int, QByteArray> MessageContentModel::roleNames() const
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{
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QHash<int, QByteArray> roles = QAbstractItemModel::roleNames();
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roles[DisplayRole] = "display";
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roles[ComponentTypeRole] = "componentType";
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roles[EventIdRole] = "eventId";
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roles[AuthorRole] = "author";
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roles[MediaInfoRole] = "mediaInfo";
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roles[FileTransferInfoRole] = "fileTransferInfo";
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roles[LatitudeRole] = "latitude";
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roles[LongitudeRole] = "longitude";
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roles[AssetRole] = "asset";
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roles[PollHandlerRole] = "pollHandler";
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roles[IsReplyRole] = "isReply";
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roles[ReplyComponentType] = "replyComponentType";
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roles[ReplyEventIdRole] = "replyEventId";
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roles[ReplyAuthorRole] = "replyAuthor";
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roles[ReplyDisplayRole] = "replyDisplay";
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roles[ReplyMediaInfoRole] = "replyMediaInfo";
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roles[LinkPreviewerRole] = "linkPreviewer";
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return roles;
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}
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void MessageContentModel::updateComponents()
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{
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beginResetModel();
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m_components.clear();
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EventHandler eventHandler(m_room, m_event);
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if (eventHandler.hasReply()) {
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if (m_room->findInTimeline(eventHandler.getReplyId()) == m_room->historyEdge()) {
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m_components += MessageComponentType::ReplyLoad;
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m_room->loadReply(m_event->id(), eventHandler.getReplyId());
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} else {
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m_components += MessageComponentType::Reply;
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}
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}
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m_components += eventHandler.messageComponentType();
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if (m_linkPreviewer != nullptr) {
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if (m_linkPreviewer->loaded()) {
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m_components += MessageComponentType::LinkPreview;
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} else {
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m_components += MessageComponentType::LinkPreviewLoad;
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}
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}
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endResetModel();
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}
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