Ignore backspace events in modal windows (#13180)

Change-Id: Idf3ec4bc80bd015c546000e99cb6ff16e79ca5a8

1 files changed, 11 insertions, 0 deletions

diff --git a/client/src/com/vaadin/client/ui/VWindow.java b/client/src/com/vaadin/client/ui/VWindow.java
index ad9d0eac7e..f83bc83c8d 100644
--- a/client/src/com/vaadin/client/ui/VWindow.java
+++ b/client/src/com/vaadin/client/ui/VWindow.java
@@ -30,6 +30,7 @@ import com.google.gwt.event.dom.client.BlurEvent;
 import com.google.gwt.event.dom.client.BlurHandler;
 import com.google.gwt.event.dom.client.FocusEvent;
 import com.google.gwt.event.dom.client.FocusHandler;
+import com.google.gwt.event.dom.client.KeyCodes;
 import com.google.gwt.event.dom.client.KeyDownEvent;
 import com.google.gwt.event.dom.client.KeyDownHandler;
 import com.google.gwt.event.dom.client.ScrollEvent;
@@ -144,6 +145,8 @@ public class VWindow extends VOverlay implements ShortcutActionHandlerOwner,
 
     private boolean closable = true;
 
+    private boolean hasFocus;
+
     /**
      * If centered (via UIDL), the window should stay in the centered -mode
      * until a position is received from the server, or the user moves or
@@ -1048,6 +1051,10 @@ public class VWindow extends VOverlay implements ShortcutActionHandlerOwner,
 
     @Override
     public void onKeyDown(KeyDownEvent event) {
+        if (hasFocus && event.getNativeKeyCode() == KeyCodes.KEY_BACKSPACE) {
+            event.preventDefault();
+        }
+
         if (shortcutHandler != null) {
             shortcutHandler
                     .handleKeyboardEvent(Event.as(event.getNativeEvent()));
@@ -1057,6 +1064,8 @@ public class VWindow extends VOverlay implements ShortcutActionHandlerOwner,
 
     @Override
     public void onBlur(BlurEvent event) {
+        hasFocus = false;
+
         if (client.hasEventListeners(this, EventId.BLUR)) {
             client.updateVariable(id, EventId.BLUR, "", true);
         }
@@ -1064,6 +1073,8 @@ public class VWindow extends VOverlay implements ShortcutActionHandlerOwner,
 
     @Override
     public void onFocus(FocusEvent event) {
+        hasFocus = true;
+
         if (client.hasEventListeners(this, EventId.FOCUS)) {
             client.updateVariable(id, EventId.FOCUS, "", true);
         }