feat: hide leaderboard when no users

src/inventory_wars/gui/InventoryWars/IdleView.qml

@@ -79,20 +79,23 @@ Rectangle {
             }
         }
 
-        Label {
-            Layout.alignment: Qt.AlignHCenter
-
-            font.pixelSize: UIStyle.fontSizeL
-            color: UIStyle.titletextColor
-
-            text: "Leaderboard"
-        }
-
         ColumnLayout {
             Layout.fillHeight: true
             Layout.fillWidth: true
             spacing: -1
 
+            visible: leaderboard.hasRow
+
+            Label {
+                Layout.alignment: Qt.AlignHCenter
+                padding: 10
+
+                font.pixelSize: UIStyle.fontSizeL
+                color: UIStyle.titletextColor
+
+                text: "Leaderboard"
+            }
+
             HorizontalHeaderView {
                 Layout.fillWidth: true
                 syncView: tableView

src/inventory_wars/gui/app.py

@@ -154,6 +154,8 @@ class GameService(QObject):
 
 @QmlElement
 class SqlLeaderboardModel(QSqlTableModel):
+    selected = Signal()
+
     def __init__(self, parent=None):
         super().__init__(parent)
 
@@ -164,6 +166,15 @@ class SqlLeaderboardModel(QSqlTableModel):
 
         self.select()
 
+    def select(self, /):
+        result = super().select()
+        self.selected.emit()
+        return result
+
+    @Property(bool, notify=selected)
+    def hasRow(self):
+        return self.rowCount() > 0
+
 
 def main():
     logging.basicConfig(level=logging.DEBUG)