1 files changed, 337 insertions, 0 deletions
diff --git a/meshmc/launcher/ui/pages/instance/LogPage.cpp b/meshmc/launcher/ui/pages/instance/LogPage.cpp
new file mode 100644
index 0000000000..8f4f4c11a4
--- /dev/null
+++ b/meshmc/launcher/ui/pages/instance/LogPage.cpp
@@ -0,0 +1,337 @@
+/* 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 "LogPage.h"
+#include "ui_LogPage.h"
+
+#include "Application.h"
+
+#include <QIcon>
+#include <QScrollBar>
+#include <QShortcut>
+
+#include "launch/LaunchTask.h"
+#include "settings/Setting.h"
+
+#include "ui/GuiUtil.h"
+#include "ui/ColorCache.h"
+
+#include <BuildConfig.h>
+
+class LogFormatProxyModel : public QIdentityProxyModel
+{
+  public:
+	LogFormatProxyModel(QObject* parent = nullptr) : QIdentityProxyModel(parent)
+	{
+	}
+	QVariant data(const QModelIndex& index, int role) const override
+	{
+		switch (role) {
+			case Qt::FontRole:
+				return m_font;
+			case Qt::ForegroundRole: {
+				MessageLevel::Enum level =
+					(MessageLevel::Enum)QIdentityProxyModel::data(
+						index, LogModel::LevelRole)
+						.toInt();
+				return m_colors->getFront(level);
+			}
+			case Qt::BackgroundRole: {
+				MessageLevel::Enum level =
+					(MessageLevel::Enum)QIdentityProxyModel::data(
+						index, LogModel::LevelRole)
+						.toInt();
+				return m_colors->getBack(level);
+			}
+			default:
+				return QIdentityProxyModel::data(index, role);
+		}
+	}
+
+	void setFont(QFont font)
+	{
+		m_font = font;
+	}
+
+	void setColors(LogColorCache* colors)
+	{
+		m_colors.reset(colors);
+	}
+
+	QModelIndex find(const QModelIndex& start, const QString& value,
+					 bool reverse) const
+	{
+		QModelIndex parentIndex = parent(start);
+		auto compare = [&](int r) -> QModelIndex {
+			QModelIndex idx = index(r, start.column(), parentIndex);
+			if (!idx.isValid() || idx == start) {
+				return QModelIndex();
+			}
+			QVariant v = data(idx, Qt::DisplayRole);
+			QString t = v.toString();
+			if (t.contains(value, Qt::CaseInsensitive))
+				return idx;
+			return QModelIndex();
+		};
+		if (reverse) {
+			int from = start.row();
+			int to = 0;
+
+			for (int i = 0; i < 2; ++i) {
+				for (int r = from; (r >= to); --r) {
+					auto idx = compare(r);
+					if (idx.isValid())
+						return idx;
+				}
+				// prepare for the next iteration
+				from = rowCount() - 1;
+				to = start.row();
+			}
+		} else {
+			int from = start.row();
+			int to = rowCount(parentIndex);
+
+			for (int i = 0; i < 2; ++i) {
+				for (int r = from; (r < to); ++r) {
+					auto idx = compare(r);
+					if (idx.isValid())
+						return idx;
+				}
+				// prepare for the next iteration
+				from = 0;
+				to = start.row();
+			}
+		}
+		return QModelIndex();
+	}
+
+  private:
+	QFont m_font;
+	std::unique_ptr<LogColorCache> m_colors;
+};
+
+LogPage::LogPage(InstancePtr instance, QWidget* parent)
+	: QWidget(parent), ui(new Ui::LogPage), m_instance(instance)
+{
+	ui->setupUi(this);
+	ui->tabWidget->tabBar()->hide();
+
+	m_proxy = new LogFormatProxyModel(this);
+	// set up text colors in the log proxy and adapt them to the current theme
+	// foreground and background
+	{
+		auto origForeground =
+			ui->text->palette().color(ui->text->foregroundRole());
+		auto origBackground =
+			ui->text->palette().color(ui->text->backgroundRole());
+		m_proxy->setColors(new LogColorCache(origForeground, origBackground));
+	}
+
+	// set up fonts in the log proxy
+	{
+		QString fontFamily =
+			APPLICATION->settings()->get("ConsoleFont").toString();
+		bool conversionOk = false;
+		int fontSize = APPLICATION->settings()
+						   ->get("ConsoleFontSize")
+						   .toInt(&conversionOk);
+		if (!conversionOk) {
+			fontSize = 11;
+		}
+		m_proxy->setFont(QFont(fontFamily, fontSize));
+	}
+
+	ui->text->setModel(m_proxy);
+
+	// set up instance and launch process recognition
+	{
+		auto launchTask = m_instance->getLaunchTask();
+		if (launchTask) {
+			setInstanceLaunchTaskChanged(launchTask, true);
+		}
+		connect(m_instance.get(), &BaseInstance::launchTaskChanged, this,
+				&LogPage::onInstanceLaunchTaskChanged);
+	}
+
+	auto findShortcut = new QShortcut(QKeySequence(QKeySequence::Find), this);
+	connect(findShortcut, SIGNAL(activated()), SLOT(findActivated()));
+	auto findNextShortcut =
+		new QShortcut(QKeySequence(QKeySequence::FindNext), this);
+	connect(findNextShortcut, SIGNAL(activated()), SLOT(findNextActivated()));
+	connect(ui->searchBar, SIGNAL(returnPressed()),
+			SLOT(on_findButton_clicked()));
+	auto findPreviousShortcut =
+		new QShortcut(QKeySequence(QKeySequence::FindPrevious), this);
+	connect(findPreviousShortcut, SIGNAL(activated()),
+			SLOT(findPreviousActivated()));
+}
+
+LogPage::~LogPage()
+{
+	delete ui;
+}
+
+void LogPage::modelStateToUI()
+{
+	if (m_model->wrapLines()) {
+		ui->text->setWordWrap(true);
+		ui->wrapCheckbox->setCheckState(Qt::Checked);
+	} else {
+		ui->text->setWordWrap(false);
+		ui->wrapCheckbox->setCheckState(Qt::Unchecked);
+	}
+	if (m_model->suspended()) {
+		ui->trackLogCheckbox->setCheckState(Qt::Unchecked);
+	} else {
+		ui->trackLogCheckbox->setCheckState(Qt::Checked);
+	}
+}
+
+void LogPage::UIToModelState()
+{
+	if (!m_model) {
+		return;
+	}
+	m_model->setLineWrap(ui->wrapCheckbox->checkState() == Qt::Checked);
+	m_model->suspend(ui->trackLogCheckbox->checkState() != Qt::Checked);
+}
+
+void LogPage::setInstanceLaunchTaskChanged(shared_qobject_ptr<LaunchTask> proc,
+										   bool initial)
+{
+	m_process = proc;
+	if (m_process) {
+		m_model = proc->getLogModel();
+		m_proxy->setSourceModel(m_model.get());
+		if (initial) {
+			modelStateToUI();
+		} else {
+			UIToModelState();
+		}
+	} else {
+		m_proxy->setSourceModel(nullptr);
+		m_model.reset();
+	}
+}
+
+void LogPage::onInstanceLaunchTaskChanged(shared_qobject_ptr<LaunchTask> proc)
+{
+	setInstanceLaunchTaskChanged(proc, false);
+}
+
+bool LogPage::apply()
+{
+	return true;
+}
+
+bool LogPage::shouldDisplay() const
+{
+	return m_instance->isRunning() || m_proxy->rowCount() > 0;
+}
+
+void LogPage::on_btnPaste_clicked()
+{
+	if (!m_model)
+		return;
+
+	// FIXME: turn this into a proper task and move the upload logic out of
+	// GuiUtil!
+	m_model->append(
+		MessageLevel::MeshMC,
+		QString("%2: Log upload triggered at: %1")
+			.arg(QDateTime::currentDateTime().toString(Qt::RFC2822Date),
+				 BuildConfig.MESHMC_NAME));
+	auto url = GuiUtil::uploadPaste(m_model->toPlainText(), this);
+	if (!url.isEmpty()) {
+		m_model->append(MessageLevel::MeshMC,
+						QString("%2: Log uploaded to: %1")
+							.arg(url, BuildConfig.MESHMC_NAME));
+	} else {
+		m_model->append(
+			MessageLevel::Error,
+			QString("%1: Log upload failed!").arg(BuildConfig.MESHMC_NAME));
+	}
+}
+
+void LogPage::on_btnCopy_clicked()
+{
+	if (!m_model)
+		return;
+	m_model->append(
+		MessageLevel::MeshMC,
+		QString("Clipboard copy at: %1")
+			.arg(QDateTime::currentDateTime().toString(Qt::RFC2822Date)));
+	GuiUtil::setClipboardText(m_model->toPlainText());
+}
+
+void LogPage::on_btnClear_clicked()
+{
+	if (!m_model)
+		return;
+	m_model->clear();
+	m_container->refreshContainer();
+}
+
+void LogPage::on_btnBottom_clicked()
+{
+	ui->text->scrollToBottom();
+}
+
+void LogPage::on_trackLogCheckbox_clicked(bool checked)
+{
+	if (!m_model)
+		return;
+	m_model->suspend(!checked);
+}
+
+void LogPage::on_wrapCheckbox_clicked(bool checked)
+{
+	ui->text->setWordWrap(checked);
+	if (!m_model)
+		return;
+	m_model->setLineWrap(checked);
+}
+
+void LogPage::on_findButton_clicked()
+{
+	auto modifiers = QApplication::keyboardModifiers();
+	bool reverse = modifiers & Qt::ShiftModifier;
+	ui->text->findNext(ui->searchBar->text(), reverse);
+}
+
+void LogPage::findNextActivated()
+{
+	ui->text->findNext(ui->searchBar->text(), false);
+}
+
+void LogPage::findPreviousActivated()
+{
+	ui->text->findNext(ui->searchBar->text(), true);
+}
+
+void LogPage::findActivated()
+{
+	// focus the search bar if it doesn't have focus
+	if (!ui->searchBar->hasFocus()) {
+		ui->searchBar->setFocus();
+		ui->searchBar->selectAll();
+	}
+}