Handle renderer exceptions gracefully (#18554)

Change-Id: I46557f6c6f8543ab61b863145863824785d14784

server/src/com/vaadin/data/RpcDataProviderExtension.java

@@ -26,6 +26,7 @@ import java.util.List;
 import java.util.Locale;
 import java.util.Map;
 import java.util.Set;
+import java.util.logging.Level;
 import java.util.logging.Logger;
 
 import com.google.gwt.thirdparty.guava.common.collect.BiMap;
@@ -1238,7 +1239,13 @@ public class RpcDataProviderExtension extends AbstractExtension {
                     safeConverter.getPresentationType(), locale);
         }
 
-        JsonValue encodedValue = renderer.encode(presentationValue);
+        JsonValue encodedValue;
+        try {
+            encodedValue = renderer.encode(presentationValue);
+        } catch (Exception e) {
+            getLogger().log(Level.SEVERE, "Unable to encode data", e);
+            encodedValue = renderer.encode(null);
+        }
 
         return encodedValue;
     }

server/src/com/vaadin/ui/renderers/ImageRenderer.java

@@ -58,7 +58,7 @@ public class ImageRenderer extends ClickableRenderer<Resource> {
         if (!(resource == null || resource instanceof ExternalResource || resource instanceof ThemeResource)) {
             throw new IllegalArgumentException(
                     "ImageRenderer only supports ExternalResource and ThemeResource ("
-                            + resource.getClass().getSimpleName() + "given )");
+                            + resource.getClass().getSimpleName() + " given)");
         }
 
         return encode(ResourceReference.create(resource, this, null),

uitest/src/com/vaadin/tests/components/grid/GridWithBrokenRenderer.java

@@ -0,0 +1,43 @@
+/*
+ * Copyright 2000-2014 Vaadin Ltd.
+ * 
+ * Licensed under the Apache License, Version 2.0 (the "License"); you may not
+ * use this file except in compliance with the License. You may obtain a copy of
+ * the License at
+ * 
+ * http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ * License for the specific language governing permissions and limitations under
+ * the License.
+ */
+package com.vaadin.tests.components.grid;
+
+import com.vaadin.server.ClassResource;
+import com.vaadin.server.Resource;
+import com.vaadin.server.VaadinRequest;
+import com.vaadin.tests.components.AbstractTestUIWithLog;
+import com.vaadin.tests.integration.FlagSeResource;
+import com.vaadin.ui.Grid;
+import com.vaadin.ui.renderers.ImageRenderer;
+
+public class GridWithBrokenRenderer extends AbstractTestUIWithLog {
+
+    @Override
+    protected void setup(VaadinRequest request) {
+        final Grid grid = new Grid();
+        grid.addColumn("short", String.class);
+        grid.addColumn("icon", Resource.class);
+        grid.addColumn("country", String.class);
+
+        grid.getColumn("icon").setRenderer(new ImageRenderer());
+        addComponent(grid);
+
+        grid.addRow("FI", new ClassResource("fi.gif"), "Finland");
+        grid.addRow("SE", new FlagSeResource(), "Sweden");
+
+    }
+
+}

uitest/src/com/vaadin/tests/components/grid/GridWithBrokenRendererTest.java

@@ -0,0 +1,41 @@
+/*
+ * Copyright 2000-2014 Vaadin Ltd.
+ * 
+ * Licensed under the Apache License, Version 2.0 (the "License"); you may not
+ * use this file except in compliance with the License. You may obtain a copy of
+ * the License at
+ * 
+ * http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ * License for the specific language governing permissions and limitations under
+ * the License.
+ */
+package com.vaadin.tests.components.grid;
+
+import org.junit.Assert;
+import org.junit.Test;
+
+import com.vaadin.testbench.elements.GridElement;
+import com.vaadin.tests.tb3.SingleBrowserTest;
+
+public class GridWithBrokenRendererTest extends SingleBrowserTest {
+
+    @Test
+    public void ensureRendered() {
+        openTestURL();
+        GridElement grid = $(GridElement.class).first();
+        assertRow(grid, 0, "FI", "", "Finland");
+        assertRow(grid, 1, "SE", "", "Sweden");
+    }
+
+    private void assertRow(GridElement grid, int row, String... texts) {
+        for (int column = 0; column < texts.length; column++) {
+            Assert.assertEquals("Cell " + row + "," + column, texts[column],
+                    grid.getCell(row, column).getText());
+        }
+
+    }
+}