From 91590e9f6c91de1fcfd9534263a2e270d973d384 Mon Sep 17 00:00:00 2001
From: Teemu Suo-Anttila <tsuoanttila@users.noreply.github.com>
Date: Tue, 28 Mar 2017 10:07:00 +0300
Subject: Fix data not being sent again when adding DataGenerators (#8947)

* Fix data not being sent again when adding DataGenerators

* Fix header component detaching, revert early header cleanup
---
 server/src/main/java/com/vaadin/data/provider/DataCommunicator.java   | 3 +++
 server/src/main/java/com/vaadin/ui/components/grid/StaticSection.java | 1 +
 2 files changed, 4 insertions(+)

(limited to 'server/src')

diff --git a/server/src/main/java/com/vaadin/data/provider/DataCommunicator.java b/server/src/main/java/com/vaadin/data/provider/DataCommunicator.java
index 566c7c732f..ae3c6f4cc1 100644
--- a/server/src/main/java/com/vaadin/data/provider/DataCommunicator.java
+++ b/server/src/main/java/com/vaadin/data/provider/DataCommunicator.java
@@ -366,6 +366,9 @@ public class DataCommunicator<T> extends AbstractExtension {
     public void addDataGenerator(DataGenerator<T> generator) {
         Objects.requireNonNull(generator, "generator cannot be null");
         generators.add(generator);
+
+        // Make sure data gets generated when adding data generators.
+        reset();
     }
 
     /**
diff --git a/server/src/main/java/com/vaadin/ui/components/grid/StaticSection.java b/server/src/main/java/com/vaadin/ui/components/grid/StaticSection.java
index dcf27fb357..947be8f522 100644
--- a/server/src/main/java/com/vaadin/ui/components/grid/StaticSection.java
+++ b/server/src/main/java/com/vaadin/ui/components/grid/StaticSection.java
@@ -158,6 +158,7 @@ public abstract class StaticSection<ROW extends StaticSection.StaticRow<?>>
                         iterator.remove();
                     }
                 }
+                cell.detach();
             }
         }
 
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