Allow to set a custom title for all FloatingContainer (#454)

src/FloatingDockContainer.cpp

@@ -433,7 +433,7 @@ struct FloatingDockContainerPrivate
 		}
 		else
 		{
-			setWindowTitle(qApp->applicationDisplayName());
+			setWindowTitle(floatingContainersTitle());
 		}
 
 		// reflect CurrentWidget's icon if configured to do so, otherwise display application icon as window icon
@@ -453,6 +453,18 @@ struct FloatingDockContainerPrivate
 	 * Handles escape key press when dragging around the floating widget
 	 */
 	void handleEscapeKey();
+
+	/**
+	 * Returns the title used by all FloatingContainer that does not
+	 * reflect the title of the current dock widget.
+	 *
+	 * If not title was set with CDockManager::setFloatingContainersTitle(),
+	 * it returns QGuiApplication::applicationDisplayName().
+	 */
+	static QString floatingContainersTitle()
+	{
+		return CDockManager::floatingContainersTitle();
+	}
 };
 // struct FloatingDockContainerPrivate
 
@@ -985,7 +997,7 @@ void CFloatingDockContainer::onDockAreasAddedOrRemoved()
 			    SLOT(onDockAreaCurrentChanged(int)));
 			d->SingleDockArea = nullptr;
 		}
-		d->setWindowTitle(qApp->applicationDisplayName());
+		d->setWindowTitle(d->floatingContainersTitle());
 		setWindowIcon(QApplication::windowIcon());
 	}
 }
@@ -1012,7 +1024,7 @@ void CFloatingDockContainer::updateWindowTitle()
 	}
 	else
 	{
-		d->setWindowTitle(qApp->applicationDisplayName());
+		d->setWindowTitle(d->floatingContainersTitle());
 		setWindowIcon(QApplication::windowIcon());
 	}
 }