Add UI.addCloseListener() and removeCloseListener() that were missing for some reason (#9265)

1 files changed, 24 insertions, 0 deletions

diff --git a/server/src/com/vaadin/ui/UI.java b/server/src/com/vaadin/ui/UI.java
index 41d0c43399..7f0710c813 100644
--- a/server/src/com/vaadin/ui/UI.java
+++ b/server/src/com/vaadin/ui/UI.java
@@ -1120,6 +1120,18 @@ public abstract class UI extends AbstractComponentContainer implements
     }
 
     /**
+     * Adds a close listener to the UI. Close listeners are invoked when the UI
+     * is removed from the session due to UI or session expiration.
+     * 
+     * @param listener
+     *            The CloseListener that should be added.
+     */
+    public void addCloseListener(CloseListener listener) {
+        addListener(CloseEvent.CLOSE_EVENT_IDENTIFIER, CloseEvent.class,
+                listener, CloseListener.closeMethod);
+    }
+
+    /**
      * @deprecated Since 7.0, replaced by
      *             {@link #addClickListener(ClickListener)}
      **/
@@ -1141,6 +1153,18 @@ public abstract class UI extends AbstractComponentContainer implements
     }
 
     /**
+     * Removes a close listener from the UI, if previously added with
+     * {@link #addCloseListener(CloseListener)}.
+     * 
+     * @param listener
+     *            The CloseListener that should be removed
+     */
+    public void removeCloseListener(CloseListener listener) {
+        removeListener(CloseEvent.CLOSE_EVENT_IDENTIFIER, CloseEvent.class,
+                listener);
+    }
+
+    /**
      * @deprecated Since 7.0, replaced by
      *             {@link #removeClickListener(ClickListener)}
      **/