refactor DeckViewContainer into own file (#5455)

* cut-and-paste

* remove some includes

* move refreshShortcuts

* move deck_view into src/game/deckview

* move deck_view_container to src/game/deckview

* fix build failure

cockatrice/src/game/deckview/deck_view_container.h

@@ -0,0 +1,80 @@
+#ifndef DECK_VIEW_CONTAINER_H
+#define DECK_VIEW_CONTAINER_H
+
+#include "../../deck/deck_loader.h"
+
+#include <QPushButton>
+
+class QVBoxLayout;
+class AbstractCardItem;
+class VisualDeckStorageWidget;
+class DeckPreviewWidget;
+class Response;
+class TabGame;
+class DeckView;
+
+/**
+ * Custom QButton implementation in order to have the red/green toggling square around the button
+ */
+class ToggleButton : public QPushButton
+{
+    Q_OBJECT
+private:
+    bool state;
+signals:
+    void stateChanged();
+
+public:
+    explicit ToggleButton(QWidget *parent = nullptr);
+    bool getState() const
+    {
+        return state;
+    }
+    void setState(bool _state);
+
+protected:
+    void paintEvent(QPaintEvent *event) override;
+};
+
+/**
+ * This widget contains the deck selection view that is used before a game begins.
+ */
+class DeckViewContainer : public QWidget
+{
+    Q_OBJECT
+private:
+    QVBoxLayout *deckViewLayout;
+    QPushButton *loadLocalButton, *loadRemoteButton, *unloadDeckButton, *forceStartGameButton;
+    ToggleButton *readyStartButton, *sideboardLockButton;
+    DeckView *deckView;
+    VisualDeckStorageWidget *visualDeckStorageWidget;
+    TabGame *parentGame;
+    int playerId;
+private slots:
+    void replaceDeckStorageWithDeckView(QMouseEvent *event, DeckPreviewWidget *instance);
+    void loadLocalDeck();
+    void loadRemoteDeck();
+    void unloadDeck();
+    void readyStart();
+    void forceStart();
+    void deckSelectFinished(const Response &r);
+    void sideboardPlanChanged();
+    void sideboardLockButtonClicked();
+    void updateSideboardLockButtonText();
+    void refreshShortcuts();
+signals:
+    void newCardAdded(AbstractCardItem *card);
+    void notIdle();
+
+public:
+    DeckViewContainer(int _playerId, TabGame *parent);
+    void retranslateUi();
+    void setButtonsVisible(bool _visible);
+    void setReadyStart(bool ready);
+    void readyAndUpdate();
+    void setSideboardLocked(bool locked);
+    void setDeck(const DeckLoader &deck);
+    void loadDeckFromFile(const QString &filePath);
+};
+
+#endif // DECK_VIEW_CONTAINER_H