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/* SPDX-FileCopyrightText: 2026 Project Tick
* SPDX-FileContributor: Project Tick
* SPDX-License-Identifier: GPL-3.0-or-later
*
* MeshMC - A Custom Launcher for Minecraft
* Copyright (C) 2026 Project Tick
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
#include "LogModel.h"
LogModel::LogModel(QObject* parent) : QAbstractListModel(parent)
{
m_content.resize(m_maxLines);
}
int LogModel::rowCount(const QModelIndex& parent) const
{
if (parent.isValid())
return 0;
return m_numLines;
}
QVariant LogModel::data(const QModelIndex& index, int role) const
{
if (index.row() < 0 || index.row() >= m_numLines)
return QVariant();
auto row = index.row();
auto realRow = (row + m_firstLine) % m_maxLines;
if (role == Qt::DisplayRole || role == Qt::EditRole) {
return m_content[realRow].line;
}
if (role == LevelRole) {
return m_content[realRow].level;
}
return QVariant();
}
void LogModel::append(MessageLevel::Enum level, QString line)
{
if (m_suspended) {
return;
}
int lineNum = (m_firstLine + m_numLines) % m_maxLines;
// overflow
if (m_numLines == m_maxLines) {
if (m_stopOnOverflow) {
// nothing more to do, the buffer is full
return;
}
beginRemoveRows(QModelIndex(), 0, 0);
m_firstLine = (m_firstLine + 1) % m_maxLines;
m_numLines--;
endRemoveRows();
} else if (m_numLines == m_maxLines - 1 && m_stopOnOverflow) {
level = MessageLevel::Fatal;
line = m_overflowMessage;
}
beginInsertRows(QModelIndex(), m_numLines, m_numLines);
m_numLines++;
m_content[lineNum].level = level;
m_content[lineNum].line = line;
endInsertRows();
}
void LogModel::suspend(bool suspend)
{
m_suspended = suspend;
}
bool LogModel::suspended()
{
return m_suspended;
}
void LogModel::clear()
{
beginResetModel();
m_firstLine = 0;
m_numLines = 0;
endResetModel();
}
QString LogModel::toPlainText()
{
QString out;
out.reserve(m_numLines * 80);
for (int i = 0; i < m_numLines; i++) {
QString& line = m_content[(m_firstLine + i) % m_maxLines].line;
out.append(line + '\n');
}
out.squeeze();
return out;
}
void LogModel::setMaxLines(int maxLines)
{
// no-op
if (maxLines == m_maxLines) {
return;
}
// if it all still fits in the buffer, just resize it
if (m_firstLine + m_numLines < m_maxLines) {
m_maxLines = maxLines;
m_content.resize(maxLines);
return;
}
// otherwise, we need to reorganize the data because it crosses the wrap
// boundary
QVector<entry> newContent;
newContent.resize(maxLines);
if (m_numLines <= maxLines) {
// if it all fits in the new buffer, just copy it over
for (int i = 0; i < m_numLines; i++) {
newContent[i] = m_content[(m_firstLine + i) % m_maxLines];
}
m_content.swap(newContent);
} else {
// if it doesn't fit, part of the data needs to be thrown away (the
// oldest log messages)
int lead = m_numLines - maxLines;
beginRemoveRows(QModelIndex(), 0, lead - 1);
for (int i = 0; i < maxLines; i++) {
newContent[i] = m_content[(m_firstLine + lead + i) % m_maxLines];
}
m_numLines = m_maxLines;
m_content.swap(newContent);
endRemoveRows();
}
m_firstLine = 0;
m_maxLines = maxLines;
}
int LogModel::getMaxLines()
{
return m_maxLines;
}
void LogModel::setStopOnOverflow(bool stop)
{
m_stopOnOverflow = stop;
}
void LogModel::setOverflowMessage(const QString& overflowMessage)
{
m_overflowMessage = overflowMessage;
}
void LogModel::setLineWrap(bool state)
{
if (m_lineWrap != state) {
m_lineWrap = state;
}
}
bool LogModel::wrapLines() const
{
return m_lineWrap;
}
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