Refactor: Move close event logic from FloatingWindow to DropArea

So main window can use it too

(cherry-picked from commit 3454b67a45)

src/controllers/DropArea.cpp

@@ -13,6 +13,7 @@
 #include "Config.h"
 #include "kddockwidgets/ViewFactory.h"
 #include "DockRegistry.h"
+#include "Platform.h"
 #include "private/Draggable_p.h"
 #include "private/Logging_p.h"
 #include "private/Utils_p.h"
@@ -651,3 +652,15 @@ bool DropArea::deserialize(const LayoutSaver::MultiSplitter &l)
     setRootItem(new Layouting::ItemBoxContainer(view()));
     return Layout::deserialize(l);
 }
+
+void DropArea::onCloseEvent(QCloseEvent *e)
+{
+    e->accept(); // Accepted by default (will close unless ignored)
+
+    const Controllers::Frame::List frames = this->frames();
+    for (Controllers::Frame *frame : frames) {
+        Platform::instance()->sendEvent(frame->view(), e);
+        if (!e->isAccepted())
+            break; // Stop when the first frame prevents closing
+    }
+}

src/controllers/DropArea.h

@@ -133,6 +133,8 @@ public:
 
     Layouting::ItemBoxContainer *rootItem() const;
 
+    void onCloseEvent(QCloseEvent *);
+
 private:
     Q_DISABLE_COPY(DropArea)
     friend class Controllers::MainWindow;

src/controllers/FloatingWindow.cpp

@@ -512,14 +512,7 @@ void FloatingWindow::onCloseEvent(QCloseEvent *e)
         return;
     }
 
-    e->accept(); // Accepted by default (will close unless ignored)
-
-    const Controllers::Frame::List frames = this->frames();
-    for (Controllers::Frame *frame : frames) {
-        Platform::instance()->sendEvent(frame->view(), e);
-        if (!e->isAccepted())
-            break; // Stop when the first frame prevents closing
-    }
+    m_dropArea->onCloseEvent(e);
 }
 
 bool FloatingWindow::deserialize(const LayoutSaver::FloatingWindow &fw)