CHE-5274. Do not skip setting focus on element when window was alread…

…y displayed

Signed-off-by: Roman Nikitenko <rnikiten@redhat.com>

ide/che-core-ide-ui/src/main/java/org/eclipse/che/ide/ui/window/Window.java

@@ -224,6 +224,7 @@ public void show(@Nullable final Focusable selectAndFocusElement) {
         setBlocked(false);
 
         if (isShowing) {
+            setFocusOn(selectAndFocusElement);//the window is displayed but focus for the element may be lost
             return;
         }
 
@@ -247,14 +248,22 @@ public void show(@Nullable final Focusable selectAndFocusElement) {
                 public void execute() {
                     // The popup may have been hidden before this timer executes.
                     view.setShowing(true);
-                    if (selectAndFocusElement != null) {
-                        selectAndFocusElement.setFocus(true);
-                    }
+                    setFocusOn(selectAndFocusElement);
                 }
             });
         }
     }
 
+    /**
+     * Sets focus on the given element.
+     * If {@code elementToFocus} is {@code null}, no element will be given focus
+     */
+    private void setFocusOn(@Nullable Focusable elementToFocus) {
+        if (elementToFocus != null) {
+            elementToFocus.setFocus(true);
+        }
+    }
+
     private void handleViewEvents() {
         view.setDelegate(new ViewEvents() {
             @Override