[Move refactor] Move tabs to interface/widgets (#6235)

* Move tabs to interface/widgets.

---------

Co-authored-by: Lukas Brübach <Bruebach.Lukas@bdosecurity.de>

cockatrice/src/interface/widgets/tabs/tab.h

@@ -0,0 +1,75 @@
+/**
+ * @file tab.h
+ * @ingroup Tabs
+ * @brief TODO: Document this.
+ */
+
+#ifndef TAB_H
+#define TAB_H
+
+#include <QMainWindow>
+#include <libcockatrice/utility/card_ref.h>
+
+class QMenu;
+class TabSupervisor;
+class CardInfoDisplayWidget;
+
+class Tab : public QMainWindow
+{
+    Q_OBJECT
+signals:
+    void userEvent(bool globalEvent = true);
+    void tabTextChanged(Tab *tab, const QString &newTabText);
+
+protected:
+    TabSupervisor *tabSupervisor;
+    void addTabMenu(QMenu *menu)
+    {
+        tabMenus.append(menu);
+    }
+protected slots:
+    void showCardInfoPopup(const QPoint &pos, const CardRef &cardRef);
+    void deleteCardInfoPopup(const QString &cardName);
+
+private:
+    CardRef currentCard;
+    bool contentsChanged;
+    CardInfoDisplayWidget *infoPopup;
+    QList<QMenu *> tabMenus;
+
+public:
+    explicit Tab(TabSupervisor *_tabSupervisor);
+    const QList<QMenu *> &getTabMenus() const
+    {
+        return tabMenus;
+    }
+    TabSupervisor *getTabSupervisor() const
+    {
+        return tabSupervisor;
+    }
+    bool getContentsChanged() const
+    {
+        return contentsChanged;
+    }
+    void setContentsChanged(bool _contentsChanged)
+    {
+        contentsChanged = _contentsChanged;
+    }
+    virtual QString getTabText() const = 0;
+    virtual void retranslateUi() = 0;
+
+    /**
+     * Nicely asks to close the tab.
+     * Override this method to do checks or ask for confirmation before closing the tab.
+     * If you need to force close the tab, just call close() instead.
+     *
+     * @return True if the tab is successfully closed.
+     */
+    virtual bool closeRequest();
+
+    virtual void tabActivated()
+    {
+    }
+};
+
+#endif