Animation Editor: Morph targets window shows duplicated morph targets (#5831)

Dialog stack wasn't deleting the morph target widgets after reinitializing the window which ended up in duplicated morph targets

Signed-off-by: Benjamin Jillich <jillich@amazon.com>

Gems/EMotionFX/Code/MysticQt/Source/DialogStack.cpp

@@ -71,8 +71,6 @@ namespace MysticQt
         setWidget(m_rootSplitter);
     }
 
-
-    // destructor
     DialogStack::~DialogStack()
     {
     }
@@ -81,6 +79,14 @@ namespace MysticQt
     // get rid of all dialogs and their allocated memory
     void DialogStack::Clear()
     {
+        for (Dialog& dialog : m_dialogs)
+        {
+            if (dialog.m_dialogWidget)
+            {
+                dialog.m_dialogWidget->deleteLater();
+            }
+        }
+
         // destroy the dialogs
         m_dialogs.clear();
 
@@ -679,6 +685,4 @@ namespace MysticQt
             return;
         }
     }
-}   // namespace MysticQt
-
-#include <MysticQt/Source/moc_DialogStack.cpp>
+} // namespace MysticQt

Gems/EMotionFX/Code/MysticQt/Source/DialogStack.h

@@ -6,10 +6,8 @@
  *
  */
 
-#ifndef __MYSTICQT_DIALOGSTACK_H
-#define __MYSTICQT_DIALOGSTACK_H
+#pragma once
 
-//
 #if !defined(Q_MOC_RUN)
 #include "MysticQtConfig.h"
 #include <QtWidgets/QWidget>
@@ -30,14 +28,10 @@ namespace MysticQt
 {
     class DialogStackSplitter;
 
-    /**
-     *
-     *
-     */
     class MYSTICQT_API DialogStack
         : public QScrollArea
     {
-        Q_OBJECT
+        Q_OBJECT // AUTOMOC
 
     public:
         DialogStack(QWidget* parent = nullptr);
@@ -89,5 +83,3 @@ namespace MysticQt
         int32                   m_prevMouseY;
     };
 }   // namespace MysticQt
-
-#endif