Window closing changes

Depends-On: I21615028be7c8569877686e6a4644e765b8426ee
Change-Id: If107303392a13a2b0fdbb1238f4f95b19b985335
Reviewed-on: http://gerrit.dmdirc.com/893
Automatic-Compile: DMDirc Local Commits <dmdirc@googlemail.com>
Reviewed-by: Gregory Holmes <greg@dmdirc.com>

src/com/dmdirc/addons/dcc/DCCFrame.java

 
         // 6: Remove the window from the window manager
         WindowManager.removeWindow(myWindow);
+    }
 
+    /** {@inheritDoc} */
+    @Override
+    public void windowClosed() {
         // 7: Remove any references to the window and parents
         myWindow = null; // NOPMD
     }

src/com/dmdirc/addons/logging/HistoryWindow.java

 
         // 6: Remove the window from the window manager
         WindowManager.removeWindow(window);
+    }
 
+    /** {@inheritDoc} */
+    @Override
+    public void windowClosed() {
         // 7: Remove any references to the window and parents
         window = null; // NOPMD
         parent = null; // NOPMD

src/com/dmdirc/addons/ui_swing/components/frames/TextFrame.java

      */
     @Override
     public void internalFrameClosed(final InternalFrameEvent event) {
-        new LoggingSwingWorker() {
-
-            /** {@inheritDoc} */
-            @Override
-            protected Object doInBackground() throws Exception {
-                frameParent.windowClosed();
-                return null;
-            }
-        }.execute();
+        //Ignore.
     }
 
     /**
     @Override
     public void internalFrameDeiconified(final InternalFrameEvent event) {
         //Ignore.
-        }
+    }
 
     /**
      * Activates the input field on frame focus. {@inheritDoc}