Add 'meshmc/' from commit 'fad6a1066616b69d7f5fef01178efdf014c59537'

git-subtree-dir: meshmc
git-subtree-mainline: 934382c8a1ce738589dee9ee0f14e1cec812770e
git-subtree-split: fad6a1066616b69d7f5fef01178efdf014c59537

1 files changed, 407 insertions, 0 deletions

diff --git a/meshmc/launcher/ui/pages/instance/ModFolderPage.cpp b/meshmc/launcher/ui/pages/instance/ModFolderPage.cpp
new file mode 100644
index 0000000000..b894534f5f
--- /dev/null
+++ b/meshmc/launcher/ui/pages/instance/ModFolderPage.cpp
@@ -0,0 +1,407 @@
+/* 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/>.
+ *
+ *  This file incorporates work covered by the following copyright and
+ *  permission notice:
+ *
+ * Copyright 2013-2021 MultiMC Contributors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "ModFolderPage.h"
+#include "ui_ModFolderPage.h"
+
+#include <QMessageBox>
+#include <QEvent>
+#include <QKeyEvent>
+#include <QAbstractItemModel>
+#include <QMenu>
+#include <QSortFilterProxyModel>
+
+#include "Application.h"
+
+#include "ui/dialogs/CustomMessageBox.h"
+#include "ui/GuiUtil.h"
+
+#include "DesktopServices.h"
+
+#include "minecraft/mod/ModFolderModel.h"
+#include "minecraft/mod/Mod.h"
+#include "minecraft/VersionFilterData.h"
+#include "minecraft/PackProfile.h"
+
+#include "Version.h"
+
+namespace
+{
+	// FIXME: wasteful
+	void RemoveThePrefix(QString& string)
+	{
+		QRegularExpression regex(
+			QStringLiteral("^(([Tt][Hh][eE])|([Tt][eE][Hh])) +"));
+		string.remove(regex);
+		string = string.trimmed();
+	}
+} // namespace
+
+class ModSortProxy : public QSortFilterProxyModel
+{
+  public:
+	explicit ModSortProxy(QObject* parent = 0) : QSortFilterProxyModel(parent)
+	{
+	}
+
+  protected:
+	bool filterAcceptsRow(int source_row,
+						  const QModelIndex& source_parent) const override
+	{
+		ModFolderModel* model = qobject_cast<ModFolderModel*>(sourceModel());
+		if (!model) {
+			return false;
+		}
+		const auto& mod = model->at(source_row);
+		if (mod.name().contains(filterRegularExpression())) {
+			return true;
+		}
+		if (mod.description().contains(filterRegularExpression())) {
+			return true;
+		}
+		for (auto& author : mod.authors()) {
+			if (author.contains(filterRegularExpression())) {
+				return true;
+			}
+		}
+		return false;
+	}
+
+	bool lessThan(const QModelIndex& source_left,
+				  const QModelIndex& source_right) const override
+	{
+		ModFolderModel* model = qobject_cast<ModFolderModel*>(sourceModel());
+		if (!model || !source_left.isValid() || !source_right.isValid() ||
+			source_left.column() != source_right.column()) {
+			return QSortFilterProxyModel::lessThan(source_left, source_right);
+		}
+
+		// we are now guaranteed to have two valid indexes in the same column...
+		// we love the provided invariants unconditionally and proceed.
+
+		auto column = (ModFolderModel::Columns)source_left.column();
+		bool invert = false;
+		switch (column) {
+			// GH-2550 - sort by enabled/disabled
+			case ModFolderModel::ActiveColumn: {
+				auto dataL = source_left.data(Qt::CheckStateRole).toBool();
+				auto dataR = source_right.data(Qt::CheckStateRole).toBool();
+				if (dataL != dataR) {
+					return dataL > dataR;
+				}
+				// fallthrough
+				invert = sortOrder() == Qt::DescendingOrder;
+			}
+			// GH-2722 - sort mod names in a way that discards "The" prefixes
+			case ModFolderModel::NameColumn: {
+				auto dataL =
+					model
+						->data(model->index(source_left.row(),
+											ModFolderModel::NameColumn))
+						.toString();
+				RemoveThePrefix(dataL);
+				auto dataR =
+					model
+						->data(model->index(source_right.row(),
+											ModFolderModel::NameColumn))
+						.toString();
+				RemoveThePrefix(dataR);
+
+				auto less = dataL.compare(dataR, sortCaseSensitivity());
+				if (less != 0) {
+					return invert ? (less > 0) : (less < 0);
+				}
+				// fallthrough
+				invert = sortOrder() == Qt::DescendingOrder;
+			}
+			// GH-2762 - sort versions by parsing them as versions
+			case ModFolderModel::VersionColumn: {
+				auto dataL = Version(
+					model
+						->data(model->index(source_left.row(),
+											ModFolderModel::VersionColumn))
+						.toString());
+				auto dataR = Version(
+					model
+						->data(model->index(source_right.row(),
+											ModFolderModel::VersionColumn))
+						.toString());
+				return invert ? (dataL > dataR) : (dataL < dataR);
+			}
+			default: {
+				return QSortFilterProxyModel::lessThan(source_left,
+													   source_right);
+			}
+		}
+	}
+};
+
+ModFolderPage::ModFolderPage(BaseInstance* inst,
+							 std::shared_ptr<ModFolderModel> mods, QString id,
+							 QString iconName, QString displayName,
+							 QString helpPage, QWidget* parent)
+	: QMainWindow(parent), ui(new Ui::ModFolderPage)
+{
+	ui->setupUi(this);
+	ui->actionsToolbar->insertSpacer(ui->actionView_configs);
+
+	m_inst = inst;
+	on_RunningState_changed(m_inst && m_inst->isRunning());
+	m_mods = mods;
+	m_id = id;
+	m_displayName = displayName;
+	m_iconName = iconName;
+	m_helpName = helpPage;
+	m_fileSelectionFilter = "%1 (*.zip *.jar)";
+	m_filterModel = new ModSortProxy(this);
+	m_filterModel->setDynamicSortFilter(true);
+	m_filterModel->setFilterCaseSensitivity(Qt::CaseInsensitive);
+	m_filterModel->setSortCaseSensitivity(Qt::CaseInsensitive);
+	m_filterModel->setSourceModel(m_mods.get());
+	m_filterModel->setFilterKeyColumn(-1);
+	ui->modTreeView->setModel(m_filterModel);
+	ui->modTreeView->installEventFilter(this);
+	ui->modTreeView->sortByColumn(1, Qt::AscendingOrder);
+	ui->modTreeView->setContextMenuPolicy(Qt::CustomContextMenu);
+	connect(ui->modTreeView, &ModListView::customContextMenuRequested, this,
+			&ModFolderPage::ShowContextMenu);
+	connect(ui->modTreeView, &ModListView::activated, this,
+			&ModFolderPage::modItemActivated);
+
+	auto smodel = ui->modTreeView->selectionModel();
+	connect(smodel, &QItemSelectionModel::currentChanged, this,
+			&ModFolderPage::modCurrent);
+	connect(ui->filterEdit, &QLineEdit::textChanged, this,
+			&ModFolderPage::on_filterTextChanged);
+	connect(m_inst, &BaseInstance::runningStatusChanged, this,
+			&ModFolderPage::on_RunningState_changed);
+}
+
+void ModFolderPage::modItemActivated(const QModelIndex&)
+{
+	if (!m_controlsEnabled) {
+		return;
+	}
+	auto selection = m_filterModel->mapSelectionToSource(
+		ui->modTreeView->selectionModel()->selection());
+	m_mods->setModStatus(selection.indexes(), ModFolderModel::Toggle);
+}
+
+QMenu* ModFolderPage::createPopupMenu()
+{
+	QMenu* filteredMenu = QMainWindow::createPopupMenu();
+	filteredMenu->removeAction(ui->actionsToolbar->toggleViewAction());
+	return filteredMenu;
+}
+
+void ModFolderPage::ShowContextMenu(const QPoint& pos)
+{
+	auto menu = ui->actionsToolbar->createContextMenu(this, tr("Context menu"));
+	menu->exec(ui->modTreeView->mapToGlobal(pos));
+	delete menu;
+}
+
+void ModFolderPage::openedImpl()
+{
+	m_mods->startWatching();
+}
+
+void ModFolderPage::closedImpl()
+{
+	m_mods->stopWatching();
+}
+
+void ModFolderPage::on_filterTextChanged(const QString& newContents)
+{
+	m_viewFilter = newContents;
+	m_filterModel->setFilterFixedString(m_viewFilter);
+}
+
+CoreModFolderPage::CoreModFolderPage(BaseInstance* inst,
+									 std::shared_ptr<ModFolderModel> mods,
+									 QString id, QString iconName,
+									 QString displayName, QString helpPage,
+									 QWidget* parent)
+	: ModFolderPage(inst, mods, id, iconName, displayName, helpPage, parent)
+{
+}
+
+ModFolderPage::~ModFolderPage()
+{
+	m_mods->stopWatching();
+	delete ui;
+}
+
+void ModFolderPage::on_RunningState_changed(bool running)
+{
+	if (m_controlsEnabled == !running) {
+		return;
+	}
+	m_controlsEnabled = !running;
+	ui->actionAdd->setEnabled(m_controlsEnabled);
+	ui->actionDisable->setEnabled(m_controlsEnabled);
+	ui->actionEnable->setEnabled(m_controlsEnabled);
+	ui->actionRemove->setEnabled(m_controlsEnabled);
+}
+
+bool ModFolderPage::shouldDisplay() const
+{
+	return true;
+}
+
+bool CoreModFolderPage::shouldDisplay() const
+{
+	if (ModFolderPage::shouldDisplay()) {
+		auto inst = dynamic_cast<MinecraftInstance*>(m_inst);
+		if (!inst)
+			return true;
+		auto version = inst->getPackProfile();
+		if (!version)
+			return true;
+		if (!version->getComponent("net.minecraftforge")) {
+			return false;
+		}
+		if (!version->getComponent("net.minecraft")) {
+			return false;
+		}
+		if (version->getComponent("net.minecraft")->getReleaseDateTime() <
+			g_VersionFilterData.legacyCutoffDate) {
+			return true;
+		}
+	}
+	return false;
+}
+
+bool ModFolderPage::modListFilter(QKeyEvent* keyEvent)
+{
+	switch (keyEvent->key()) {
+		case Qt::Key_Delete:
+			on_actionRemove_triggered();
+			return true;
+		case Qt::Key_Plus:
+			on_actionAdd_triggered();
+			return true;
+		default:
+			break;
+	}
+	return QWidget::eventFilter(ui->modTreeView, keyEvent);
+}
+
+bool ModFolderPage::eventFilter(QObject* obj, QEvent* ev)
+{
+	if (ev->type() != QEvent::KeyPress) {
+		return QWidget::eventFilter(obj, ev);
+	}
+	QKeyEvent* keyEvent = static_cast<QKeyEvent*>(ev);
+	if (obj == ui->modTreeView)
+		return modListFilter(keyEvent);
+	return QWidget::eventFilter(obj, ev);
+}
+
+void ModFolderPage::on_actionAdd_triggered()
+{
+	if (!m_controlsEnabled) {
+		return;
+	}
+	auto list = GuiUtil::BrowseForFiles(
+		m_helpName,
+		tr("Select %1", "Select whatever type of files the page contains. "
+						"Example: 'Loader Mods'")
+			.arg(m_displayName),
+		m_fileSelectionFilter.arg(m_displayName),
+		APPLICATION->settings()->get("CentralModsDir").toString(),
+		this->parentWidget());
+	if (!list.empty()) {
+		for (auto filename : list) {
+			m_mods->installMod(filename);
+		}
+	}
+}
+
+void ModFolderPage::on_actionEnable_triggered()
+{
+	if (!m_controlsEnabled) {
+		return;
+	}
+	auto selection = m_filterModel->mapSelectionToSource(
+		ui->modTreeView->selectionModel()->selection());
+	m_mods->setModStatus(selection.indexes(), ModFolderModel::Enable);
+}
+
+void ModFolderPage::on_actionDisable_triggered()
+{
+	if (!m_controlsEnabled) {
+		return;
+	}
+	auto selection = m_filterModel->mapSelectionToSource(
+		ui->modTreeView->selectionModel()->selection());
+	m_mods->setModStatus(selection.indexes(), ModFolderModel::Disable);
+}
+
+void ModFolderPage::on_actionRemove_triggered()
+{
+	if (!m_controlsEnabled) {
+		return;
+	}
+	auto selection = m_filterModel->mapSelectionToSource(
+		ui->modTreeView->selectionModel()->selection());
+	m_mods->deleteMods(selection.indexes());
+}
+
+void ModFolderPage::on_actionView_configs_triggered()
+{
+	DesktopServices::openDirectory(m_inst->instanceConfigFolder(), true);
+}
+
+void ModFolderPage::on_actionView_Folder_triggered()
+{
+	DesktopServices::openDirectory(m_mods->dir().absolutePath(), true);
+}
+
+void ModFolderPage::modCurrent(const QModelIndex& current,
+							   const QModelIndex& previous)
+{
+	if (!current.isValid()) {
+		ui->frame->clear();
+		return;
+	}
+	auto sourceCurrent = m_filterModel->mapToSource(current);
+	int row = sourceCurrent.row();
+	Mod& m = m_mods->operator[](row);
+	ui->frame->updateWithMod(m);
+}