Merge #18036: gui: Break trivial circular dependencies

3aee10b80b9d9a0f5172fc2ee75f03a37d5c3863 gui: Drop ShutdownWindow dependency to BitcoinGUI (João Barbosa)
61eb058cc10592cfa314ba2209fb370706100e8b gui: Drop BanTableModel dependency to ClientModel (João Barbosa)

Pull request description:

  `ShutdownWindow::showShutdownWindow` just needs a widget to center the shutdown window and to borrow its title.

ACKs for top commit:
  hebasto:
    ACK 3aee10b80b9d9a0f5172fc2ee75f03a37d5c3863, since previous review only suggested change `QWidget` --> `QMainWindow`
  jonasschnelli:
    utACK 3aee10b80b9d9a0f5172fc2ee75f03a37d5c3863

Tree-SHA512: e15cb6ee274730bd071d3d97b540c5059e5c655248d69a37c3fd00f2aacc6cfcb36b9a65755718027e15482ec8e5e85534c1dc13d0ddb4e0680df03fbf6571f2

5 files changed, 15 insertions, 19 deletions

diff --git a/src/qt/bantablemodel.cpp b/src/qt/bantablemodel.cpp
index d1ee7fac6a..72f16bb09f 100644
--- a/src/qt/bantablemodel.cpp
+++ b/src/qt/bantablemodel.cpp
@@ -6,12 +6,13 @@
 
 #include <interfaces/node.h>
 #include <net_types.h> // For banmap_t
-#include <qt/clientmodel.h>
 
 #include <utility>
 
-#include <QDebug>
+#include <QDateTime>
 #include <QList>
+#include <QModelIndex>
+#include <QVariant>
 
 bool BannedNodeLessThan::operator()(const CCombinedBan& left, const CCombinedBan& right) const
 {
@@ -78,10 +79,9 @@ public:
     }
 };
 
-BanTableModel::BanTableModel(interfaces::Node& node, ClientModel *parent) :
+BanTableModel::BanTableModel(interfaces::Node& node, QObject* parent) :
     QAbstractTableModel(parent),
-    m_node(node),
-    clientModel(parent)
+    m_node(node)
 {
     columns << tr("IP/Netmask") << tr("Banned Until");
     priv.reset(new BanTablePriv());
diff --git a/src/qt/bantablemodel.h b/src/qt/bantablemodel.h
index 9dec5fa6a9..f01c506a1e 100644
--- a/src/qt/bantablemodel.h
+++ b/src/qt/bantablemodel.h
@@ -12,7 +12,6 @@
 #include <QAbstractTableModel>
 #include <QStringList>
 
-class ClientModel;
 class BanTablePriv;
 
 namespace interfaces {
@@ -45,7 +44,7 @@ class BanTableModel : public QAbstractTableModel
     Q_OBJECT
 
 public:
-    explicit BanTableModel(interfaces::Node& node, ClientModel *parent = nullptr);
+    explicit BanTableModel(interfaces::Node& node, QObject* parent);
     ~BanTableModel();
     void startAutoRefresh();
     void stopAutoRefresh();
@@ -72,7 +71,6 @@ public Q_SLOTS:
 
 private:
     interfaces::Node& m_node;
-    ClientModel *clientModel;
     QStringList columns;
     std::unique_ptr<BanTablePriv> priv;
 };
diff --git a/src/qt/utilitydialog.cpp b/src/qt/utilitydialog.cpp
index efe213902e..3101fb01c3 100644
--- a/src/qt/utilitydialog.cpp
+++ b/src/qt/utilitydialog.cpp
@@ -10,8 +10,6 @@
 
 #include <qt/forms/ui_helpmessagedialog.h>
 
-#include <qt/bitcoingui.h>
-
 #include <clientversion.h>
 #include <init.h>
 #include <util/system.h>
@@ -21,9 +19,10 @@
 
 #include <QCloseEvent>
 #include <QLabel>
+#include <QMainWindow>
 #include <QRegExp>
-#include <QTextTable>
 #include <QTextCursor>
+#include <QTextTable>
 #include <QVBoxLayout>
 
 /** "Help message" or "About" dialog box */
@@ -144,10 +143,9 @@ ShutdownWindow::ShutdownWindow(QWidget *parent, Qt::WindowFlags f):
     setLayout(layout);
 }
 
-QWidget *ShutdownWindow::showShutdownWindow(BitcoinGUI *window)
+QWidget* ShutdownWindow::showShutdownWindow(QMainWindow* window)
 {
-    if (!window)
-        return nullptr;
+    assert(window != nullptr);
 
     // Show a simple window indicating shutdown status
     QWidget *shutdownWindow = new ShutdownWindow();
diff --git a/src/qt/utilitydialog.h b/src/qt/utilitydialog.h
index f1cedff282..833b86fd3e 100644
--- a/src/qt/utilitydialog.h
+++ b/src/qt/utilitydialog.h
@@ -6,9 +6,11 @@
 #define BITCOIN_QT_UTILITYDIALOG_H
 
 #include <QDialog>
-#include <QObject>
+#include <QWidget>
 
-class BitcoinGUI;
+QT_BEGIN_NAMESPACE
+class QMainWindow;
+QT_END_NAMESPACE
 
 namespace interfaces {
     class Node;
@@ -46,7 +48,7 @@ class ShutdownWindow : public QWidget
 
 public:
     explicit ShutdownWindow(QWidget *parent=nullptr, Qt::WindowFlags f=Qt::Widget);
-    static QWidget *showShutdownWindow(BitcoinGUI *window);
+    static QWidget* showShutdownWindow(QMainWindow* window);
 
 protected:
     void closeEvent(QCloseEvent *event);
diff --git a/test/lint/lint-circular-dependencies.sh b/test/lint/lint-circular-dependencies.sh
index e769039682..55e0b11b27 100755
--- a/test/lint/lint-circular-dependencies.sh
+++ b/test/lint/lint-circular-dependencies.sh
@@ -13,8 +13,6 @@ EXPECTED_CIRCULAR_DEPENDENCIES=(
     "index/txindex -> validation -> index/txindex"
     "policy/fees -> txmempool -> policy/fees"
     "qt/addresstablemodel -> qt/walletmodel -> qt/addresstablemodel"
-    "qt/bantablemodel -> qt/clientmodel -> qt/bantablemodel"
-    "qt/bitcoingui -> qt/utilitydialog -> qt/bitcoingui"
     "qt/bitcoingui -> qt/walletframe -> qt/bitcoingui"
     "qt/bitcoingui -> qt/walletview -> qt/bitcoingui"
     "qt/clientmodel -> qt/peertablemodel -> qt/clientmodel"