11642 refresh pagelength 0 combobox items after dataprovider update (#11653)

* Fixes #11642. ComboBox with pageLength 0 should be updated if DataProvider changes

* added comments, fixed imports

2 files changed, 15 insertions, 0 deletions

diff --git a/shared/src/main/java/com/vaadin/shared/ui/combobox/ComboBoxServerRpc.java b/shared/src/main/java/com/vaadin/shared/ui/combobox/ComboBoxServerRpc.java
index 32bcd64c43..8cd9fff9e9 100644
--- a/shared/src/main/java/com/vaadin/shared/ui/combobox/ComboBoxServerRpc.java
+++ b/shared/src/main/java/com/vaadin/shared/ui/combobox/ComboBoxServerRpc.java
@@ -40,4 +40,11 @@ public interface ComboBoxServerRpc extends ServerRpc {
      *            mode
      */
     public void setFilter(String filter);
+
+    /**
+     * Reset the force update flag once the list contents have been updated.
+     *
+     * @since
+     */
+    public void resetForceDataSourceUpdate();
 }
diff --git a/shared/src/main/java/com/vaadin/shared/ui/combobox/ComboBoxState.java b/shared/src/main/java/com/vaadin/shared/ui/combobox/ComboBoxState.java
index acd4fb0abc..a8ad60e33d 100644
--- a/shared/src/main/java/com/vaadin/shared/ui/combobox/ComboBoxState.java
+++ b/shared/src/main/java/com/vaadin/shared/ui/combobox/ComboBoxState.java
@@ -25,6 +25,7 @@ import com.vaadin.shared.ui.AbstractSingleSelectState;
  * @since 7.0
  */
 public class ComboBoxState extends AbstractSingleSelectState {
+
     {
         // TODO ideally this would be v-combobox, but that would affect a lot of
         // themes
@@ -107,4 +108,11 @@ public class ComboBoxState extends AbstractSingleSelectState {
      */
     public String currentFilterText;
 
+    /**
+     * Ensure the data source is updated when backing dataprovider has been
+     * refreshed.
+     *
+     * @since
+     */
+    public boolean forceDataSourceUpdate;
 }