1 files changed, 278 insertions, 0 deletions
diff --git a/meshmc/launcher/ui/dialogs/NewInstanceDialog.cpp b/meshmc/launcher/ui/dialogs/NewInstanceDialog.cpp
new file mode 100644
index 0000000000..571bc3717e
--- /dev/null
+++ b/meshmc/launcher/ui/dialogs/NewInstanceDialog.cpp
@@ -0,0 +1,278 @@
+/* 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 "Application.h"
+#include "NewInstanceDialog.h"
+#include "ui_NewInstanceDialog.h"
+
+#include <BaseVersion.h>
+#include <icons/IconList.h>
+#include <tasks/Task.h>
+#include <InstanceList.h>
+
+#include "VersionSelectDialog.h"
+#include "ProgressDialog.h"
+#include "IconPickerDialog.h"
+
+#include <QLayout>
+#include <QPushButton>
+#include <QFileDialog>
+#include <QValidator>
+#include <QDialogButtonBox>
+
+#include "ui/widgets/PageContainer.h"
+#include "ui/pages/modplatform/VanillaPage.h"
+#include "ui/pages/modplatform/atlauncher/AtlPage.h"
+#include "ui/pages/modplatform/ftb/FtbPage.h"
+#include "ui/pages/modplatform/legacy_ftb/Page.h"
+#include "ui/pages/modplatform/flame/FlamePage.h"
+#include "ui/pages/modplatform/modrinth/ModrinthPage.h"
+#include "ui/pages/modplatform/ImportPage.h"
+#include "ui/pages/modplatform/technic/TechnicPage.h"
+
+NewInstanceDialog::NewInstanceDialog(const QString& initialGroup,
+									 const QString& url, QWidget* parent)
+	: QDialog(parent), ui(new Ui::NewInstanceDialog)
+{
+	ui->setupUi(this);
+
+	setWindowIcon(APPLICATION->getThemedIcon("new"));
+
+	InstIconKey = "default";
+	ui->iconButton->setIcon(APPLICATION->icons()->getIcon(InstIconKey));
+
+	auto groupList = APPLICATION->instances()->getGroups();
+	groupList.removeDuplicates();
+	groupList.sort(Qt::CaseInsensitive);
+	groupList.removeOne("");
+	groupList.push_front(initialGroup);
+	groupList.push_front("");
+	ui->groupBox->addItems(groupList);
+	int index = groupList.indexOf(initialGroup);
+	if (index == -1) {
+		index = 0;
+	}
+	ui->groupBox->setCurrentIndex(index);
+	ui->groupBox->lineEdit()->setPlaceholderText(tr("No group"));
+
+	// NOTE: m_buttons must be initialized before PageContainer, because it
+	// indirectly accesses m_buttons through setSuggestedPack! Do not move
+	// this below.
+	m_buttons =
+		new QDialogButtonBox(QDialogButtonBox::Help | QDialogButtonBox::Ok |
+							 QDialogButtonBox::Cancel);
+
+	m_container = new PageContainer(this);
+	m_container->setSizePolicy(QSizePolicy::Policy::Preferred,
+							   QSizePolicy::Policy::Expanding);
+	m_container->layout()->setContentsMargins(0, 0, 0, 0);
+	ui->verticalLayout->insertWidget(2, m_container);
+
+	m_container->addButtons(m_buttons);
+
+	// Bonk Qt over its stupid head and make sure it understands which button is
+	// the default one... See:
+	// https://stackoverflow.com/questions/24556831/qbuttonbox-set-default-button
+	auto OkButton = m_buttons->button(QDialogButtonBox::Ok);
+	OkButton->setDefault(true);
+	OkButton->setAutoDefault(true);
+	connect(OkButton, &QPushButton::clicked, this, &NewInstanceDialog::accept);
+
+	auto CancelButton = m_buttons->button(QDialogButtonBox::Cancel);
+	CancelButton->setDefault(false);
+	CancelButton->setAutoDefault(false);
+	connect(CancelButton, &QPushButton::clicked, this,
+			&NewInstanceDialog::reject);
+
+	auto HelpButton = m_buttons->button(QDialogButtonBox::Help);
+	HelpButton->setDefault(false);
+	HelpButton->setAutoDefault(false);
+	connect(HelpButton, &QPushButton::clicked, m_container,
+			&PageContainer::help);
+
+	if (!url.isEmpty()) {
+		QUrl actualUrl(url);
+		m_container->selectPage("import");
+		importPage->setUrl(url);
+	}
+
+	updateDialogState();
+
+	restoreGeometry(QByteArray::fromBase64(
+		APPLICATION->settings()->get("NewInstanceGeometry").toByteArray()));
+}
+
+void NewInstanceDialog::reject()
+{
+	APPLICATION->settings()->set("NewInstanceGeometry",
+								 saveGeometry().toBase64());
+	QDialog::reject();
+}
+
+void NewInstanceDialog::accept()
+{
+	APPLICATION->settings()->set("NewInstanceGeometry",
+								 saveGeometry().toBase64());
+	importIconNow();
+	QDialog::accept();
+}
+
+QList<BasePage*> NewInstanceDialog::getPages()
+{
+	importPage = new ImportPage(this);
+	flamePage = new FlamePage(this);
+	auto technicPage = new TechnicPage(this);
+	return {new VanillaPage(this),	   importPage,
+			new AtlPage(this),		   flamePage,
+			new ModrinthPage(this),	   new FtbPage(this),
+			new LegacyFTB::Page(this), technicPage};
+}
+
+QString NewInstanceDialog::dialogTitle()
+{
+	return tr("New Instance");
+}
+
+NewInstanceDialog::~NewInstanceDialog()
+{
+	delete ui;
+}
+
+void NewInstanceDialog::setSuggestedPack(const QString& name,
+										 InstanceTask* task)
+{
+	creationTask.reset(task);
+	ui->instNameTextBox->setPlaceholderText(name);
+
+	if (!task) {
+		ui->iconButton->setIcon(APPLICATION->icons()->getIcon("default"));
+		importIcon = false;
+	}
+
+	auto allowOK = task && !instName().isEmpty();
+	m_buttons->button(QDialogButtonBox::Ok)->setEnabled(allowOK);
+}
+
+void NewInstanceDialog::setSuggestedIconFromFile(const QString& path,
+												 const QString& name)
+{
+	importIcon = true;
+	importIconPath = path;
+	importIconName = name;
+
+	// Hmm, for some reason they can be to small
+	ui->iconButton->setIcon(QIcon(path));
+}
+
+void NewInstanceDialog::setSuggestedIcon(const QString& key)
+{
+	auto icon = APPLICATION->icons()->getIcon(key);
+	importIcon = false;
+
+	ui->iconButton->setIcon(icon);
+}
+
+InstanceTask* NewInstanceDialog::extractTask()
+{
+	InstanceTask* extracted = creationTask.get();
+	creationTask.release();
+	extracted->setName(instName());
+	extracted->setGroup(instGroup());
+	extracted->setIcon(iconKey());
+	return extracted;
+}
+
+void NewInstanceDialog::updateDialogState()
+{
+	auto allowOK = creationTask && !instName().isEmpty();
+	auto OkButton = m_buttons->button(QDialogButtonBox::Ok);
+	if (OkButton->isEnabled() != allowOK) {
+		OkButton->setEnabled(allowOK);
+	}
+}
+
+QString NewInstanceDialog::instName() const
+{
+	auto result = ui->instNameTextBox->text().trimmed();
+	if (result.size()) {
+		return result;
+	}
+	result = ui->instNameTextBox->placeholderText().trimmed();
+	if (result.size()) {
+		return result;
+	}
+	return QString();
+}
+
+QString NewInstanceDialog::instGroup() const
+{
+	return ui->groupBox->currentText();
+}
+QString NewInstanceDialog::iconKey() const
+{
+	return InstIconKey;
+}
+
+void NewInstanceDialog::on_iconButton_clicked()
+{
+	importIconNow(); // so the user can switch back
+	IconPickerDialog dlg(this);
+	dlg.execWithSelection(InstIconKey);
+
+	if (dlg.result() == QDialog::Accepted) {
+		InstIconKey = dlg.selectedIconKey;
+		ui->iconButton->setIcon(APPLICATION->icons()->getIcon(InstIconKey));
+		importIcon = false;
+	}
+}
+
+void NewInstanceDialog::on_instNameTextBox_textChanged(const QString& arg1)
+{
+	updateDialogState();
+}
+
+void NewInstanceDialog::importIconNow()
+{
+	if (importIcon) {
+		APPLICATION->icons()->installIcon(importIconPath, importIconName);
+		InstIconKey = importIconName;
+		importIcon = false;
+	}
+	APPLICATION->settings()->set("NewInstanceGeometry",
+								 saveGeometry().toBase64());
+}