Improve UI

Signed-off-by: Trial97 <alexandru.tripon97@gmail.com>

launcher/ui/java/InstallJavaDialog.h

@@ -0,0 +1,46 @@
+// SPDX-License-Identifier: GPL-3.0-only
+/*
+ *  Prism Launcher - Minecraft Launcher
+ *  Copyright (c) 2024 Trial97 <alexandru.tripon97@gmail.com>
+ *
+ *  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 <QDialog>
+#include "ui/pages/BasePageProvider.h"
+
+class MinecraftInstance;
+class PageContainer;
+class PackProfile;
+class QDialogButtonBox;
+
+namespace Java {
+class InstallDialog final : public QDialog, protected BasePageProvider {
+    Q_OBJECT
+
+   public:
+    explicit InstallDialog(const QString& uid = QString(), QWidget* parent = nullptr);
+
+    QList<BasePage*> getPages() override;
+    QString dialogTitle() override;
+
+    void validate(BasePage* page);
+    void done(int result) override;
+
+   private:
+    PageContainer* container;
+    QDialogButtonBox* buttons;
+};
+}  // namespace Java