refactor: extract common code in mod pages and model

This creates a hierarchy in which ModPage and ModModel are the parents
of every mod provider, providing the basic functionality common to all
of them.

It also imposes a unique .ui file (they were already equal before, just
duplicated basically) on all mod providers.

launcher/ui/pages/modplatform/flame/FlameModModel.h

@@ -2,78 +2,36 @@
 
 #include <RWStorage.h>
 
-#include <QAbstractListModel>
-#include <QSortFilterProxyModel>
-#include <QThreadPool>
 #include <QIcon>
-#include <QStyledItemDelegate>
 #include <QList>
+#include <QMetaType>
+#include <QSortFilterProxyModel>
 #include <QString>
 #include <QStringList>
-#include <QMetaType>
+#include <QStyledItemDelegate>
+#include <QThreadPool>
 
-#include <functional>
 #include <net/NetJob.h>
+#include <functional>
 
-#include <modplatform/flame/FlamePackIndex.h>
-#include "modplatform/flame/FlameModIndex.h"
 #include "BaseInstance.h"
 #include "FlameModPage.h"
+#include "modplatform/flame/FlameModIndex.h"
 
 namespace FlameMod {
 
-
-typedef QMap<QString, QIcon> LogoMap;
 typedef std::function<void(QString)> LogoCallback;
 
-class ListModel : public QAbstractListModel
-{
+class ListModel : public ModPlatform::ListModel {
     Q_OBJECT
 
-public:
-    ListModel(FlameModPage *parent);
+   public:
+    ListModel(FlameModPage* parent);
     virtual ~ListModel();
 
-    int rowCount(const QModelIndex &parent) const override;
-    int columnCount(const QModelIndex &parent) const override;
-    QVariant data(const QModelIndex &index, int role) const override;
-    Qt::ItemFlags flags(const QModelIndex &index) const override;
-    bool canFetchMore(const QModelIndex & parent) const override;
-    void fetchMore(const QModelIndex & parent) override;
-
-    void getLogo(const QString &logo, const QString &logoUrl, LogoCallback callback);
-    void searchWithTerm(const QString &term, const int sort);
-
-private slots:
-    void performPaginatedSearch();
-
-    void logoFailed(QString logo);
-    void logoLoaded(QString logo, QIcon out);
-
-    void searchRequestFinished();
-    void searchRequestFailed(QString reason);
-
-private:
-    void requestLogo(QString file, QString url);
-
-private:
-    QList<ModPlatform::IndexedPack> modpacks;
-    QStringList m_failedLogos;
-    QStringList m_loadingLogos;
-    LogoMap m_logoMap;
-    QMap<QString, LogoCallback> waitingCallbacks;
-
-    QString currentSearchTerm;
-    int currentSort = 0;
-    int nextSearchOffset = 0;
-    enum SearchState {
-        None,
-        CanPossiblyFetchMore,
-        ResetRequested,
-        Finished
-    } searchState = None;
-    NetJob::Ptr jobPtr;
-    QByteArray response;
+   private slots:
+    void performPaginatedSearch() override;
+    void searchRequestFinished() override;
 };
 
-}
+}  // namespace Modrinth