Custom environment variables UI and implementation

Signed-off-by: TheKodeToad <TheKodeToad@proton.me>

launcher/ui/pages/global/EnvironmentVariablesPage.cpp

@@ -0,0 +1,64 @@
+// SPDX-License-Identifier: GPL-3.0-only
+/*
+ *  Prism Launcher - Minecraft Launcher
+ *  Copyright (C) 2023 TheKodeToad <TheKodeToad@proton.me>
+ *
+ *  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, version 3.
+ *
+ *  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 <QTabBar>
+#include <QVBoxLayout>
+
+#include "EnvironmentVariablesPage.h"
+
+EnvironmentVariablesPage::EnvironmentVariablesPage(QWidget* parent) : QWidget(parent)
+{
+    auto verticalLayout = new QVBoxLayout(this);
+    verticalLayout->setContentsMargins(0, 0, 0, 0);
+    variables = new EnvironmentVariables(this);
+    variables->setContentsMargins(6, 6, 6, 6);
+    verticalLayout->addWidget(variables);
+
+    variables->initialize(false, true, false, APPLICATION->settings()->get("Env").toMap());
+}
+
+QString EnvironmentVariablesPage::displayName() const
+{
+    return tr("Environment Variables");
+}
+
+QIcon EnvironmentVariablesPage::icon() const
+{
+    return APPLICATION->getThemedIcon("environment-variables");
+}
+
+QString EnvironmentVariablesPage::id() const
+{
+    return "environment-variables";
+}
+
+QString EnvironmentVariablesPage::helpPage() const
+{
+    return "Environment-variables";
+}
+
+bool EnvironmentVariablesPage::apply()
+{
+    APPLICATION->settings()->set("Env", variables->value());
+    return true;
+}
+
+void EnvironmentVariablesPage::retranslate()
+{
+    variables->retranslate();
+}

launcher/ui/pages/global/EnvironmentVariablesPage.h

@@ -0,0 +1,42 @@
+// SPDX-License-Identifier: GPL-3.0-only
+/*
+ *  Prism Launcher - Minecraft Launcher
+ *  Copyright (C) 2023 TheKodeToad <TheKodeToad@proton.me>
+ *
+ *  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, version 3.
+ *
+ *  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/>.
+ */
+
+#pragma once
+
+#include <Application.h>
+
+#include "ui/pages/BasePage.h"
+#include "ui/widgets/EnvironmentVariables.h"
+
+class EnvironmentVariablesPage : public QWidget, public BasePage {
+    Q_OBJECT
+
+   public:
+    explicit EnvironmentVariablesPage(QWidget* parent = nullptr);
+
+    QString displayName() const override;
+    QIcon icon() const override;
+    QString id() const override;
+    QString helpPage() const override;
+
+    bool apply() override;
+    void retranslate() override;
+
+   private:
+    EnvironmentVariables* variables;
+};