NOISSUE continue reshuffling the codebase

launcher/ui/pages/BasePageProvider.h

@@ -0,0 +1,68 @@
+/* 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.
+ */
+
+#pragma once
+
+#include "ui/pages/BasePage.h"
+#include <memory>
+#include <functional>
+
+class BasePageProvider
+{
+public:
+    virtual QList<BasePage *> getPages() = 0;
+    virtual QString dialogTitle() = 0;
+};
+
+class GenericPageProvider : public BasePageProvider
+{
+    typedef std::function<BasePage *()> PageCreator;
+public:
+    explicit GenericPageProvider(const QString &dialogTitle)
+        : m_dialogTitle(dialogTitle)
+    {
+    }
+    virtual ~GenericPageProvider() {}
+
+    QList<BasePage *> getPages() override
+    {
+        QList<BasePage *> pages;
+        for (PageCreator creator : m_creators)
+        {
+            pages.append(creator());
+        }
+        return pages;
+    }
+    QString dialogTitle() override { return m_dialogTitle; }
+
+    void setDialogTitle(const QString &title)
+    {
+        m_dialogTitle = title;
+    }
+    void addPageCreator(PageCreator page)
+    {
+        m_creators.append(page);
+    }
+
+    template<typename PageClass>
+    void addPage()
+    {
+        addPageCreator([](){return new PageClass();});
+    }
+
+private:
+    QList<PageCreator> m_creators;
+    QString m_dialogTitle;
+};