Refactor Grid SelectionModels as extensions (#18624)

This patch removes all selection related variables and API from several
core parts of Grid.

Change-Id: Idb7aa48fda69ded1ef58a69c1f7dbc78b7f52a54

21 files changed, 1135 insertions, 415 deletions

diff --git a/WebContent/release-notes.html b/WebContent/release-notes.html
index 61511b3002..e9b4a24ce1 100644
--- a/WebContent/release-notes.html
+++ b/WebContent/release-notes.html
@@ -119,6 +119,8 @@
                 This may interfere with custom response compression solutions that do not respect the Content-Encoding response header.</li>
             <li>Unused methods related to the "out of sync" message have been removed from SystemMessages class.</li>
             <li>All notifications use the WAI-ARIA alert role to be compatible with Jaws</li>
+            <li>Grid SelectionModels are now Extensions. This update removes all selection related variables and API from 
+            GridConnector, GridState, GridServerRpc and GridClientRpc</li>
         </ul>
         <h3 id="knownissues">Known Issues and Limitations</h3>
         <ul>
diff --git a/client/src/com/vaadin/client/connectors/AbstractSelectionModelConnector.java b/client/src/com/vaadin/client/connectors/AbstractSelectionModelConnector.java
new file mode 100644
index 0000000000..8ca2292bc5
--- /dev/null
+++ b/client/src/com/vaadin/client/connectors/AbstractSelectionModelConnector.java
@@ -0,0 +1,82 @@
+/*
+ * 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.client.connectors;
+
+import java.util.Collection;
+
+import com.vaadin.client.data.DataSource.RowHandle;
+import com.vaadin.client.extensions.AbstractExtensionConnector;
+import com.vaadin.client.widget.grid.selection.SelectionModel;
+import com.vaadin.client.widgets.Grid;
+import com.vaadin.shared.ui.grid.GridState;
+
+import elemental.json.JsonObject;
+
+/**
+ * Base class for all selection model connectors.
+ * 
+ * @since
+ * @author Vaadin Ltd
+ */
+public abstract class AbstractSelectionModelConnector<T extends SelectionModel<JsonObject>>
+        extends AbstractExtensionConnector {
+
+    @Override
+    public GridConnector getParent() {
+        return (GridConnector) super.getParent();
+    }
+
+    protected Grid<JsonObject> getGrid() {
+        return getParent().getWidget();
+    }
+
+    protected RowHandle<JsonObject> getRowHandle(JsonObject row) {
+        return getGrid().getDataSource().getHandle(row);
+    }
+
+    protected String getRowKey(JsonObject row) {
+        return row != null ? getParent().getRowKey(row) : null;
+    }
+
+    protected abstract T createSelectionModel();
+
+    public abstract static class AbstractSelectionModel implements
+            SelectionModel<JsonObject> {
+
+        @Override
+        public boolean isSelected(JsonObject row) {
+            return row.hasKey(GridState.JSONKEY_SELECTED);
+        }
+
+        @Override
+        public void setGrid(Grid<JsonObject> grid) {
+            // NO-OP
+        }
+
+        @Override
+        public void reset() {
+            // Should not need any actions.
+        }
+
+        @Override
+        public Collection<JsonObject> getSelectedRows() {
+            throw new UnsupportedOperationException(
+                    "This client-side selection model "
+                            + getClass().getSimpleName()
+                            + " does not know selected rows.");
+        }
+    }
+}
diff --git a/client/src/com/vaadin/client/connectors/GridConnector.java b/client/src/com/vaadin/client/connectors/GridConnector.java
index 5f9341c068..1070a46287 100644
--- a/client/src/com/vaadin/client/connectors/GridConnector.java
+++ b/client/src/com/vaadin/client/connectors/GridConnector.java
@@ -22,7 +22,6 @@ import java.util.Collection;
 import java.util.HashMap;
 import java.util.HashSet;
 import java.util.Iterator;
-import java.util.LinkedHashSet;
 import java.util.List;
 import java.util.Map;
 import java.util.Map.Entry;
@@ -36,7 +35,6 @@ import com.google.gwt.dom.client.NativeEvent;
 import com.google.gwt.event.shared.HandlerRegistration;
 import com.google.gwt.user.client.DOM;
 import com.google.gwt.user.client.Timer;
-import com.google.gwt.user.client.ui.CheckBox;
 import com.google.gwt.user.client.ui.Widget;
 import com.vaadin.client.ComponentConnector;
 import com.vaadin.client.ConnectorHierarchyChangeEvent;
@@ -48,8 +46,6 @@ import com.vaadin.client.communication.StateChangeEvent;
 import com.vaadin.client.communication.StateChangeEvent.StateChangeHandler;
 import com.vaadin.client.connectors.RpcDataSourceConnector.DetailsListener;
 import com.vaadin.client.connectors.RpcDataSourceConnector.RpcDataSource;
-import com.vaadin.client.data.DataSource.RowHandle;
-import com.vaadin.client.renderers.Renderer;
 import com.vaadin.client.ui.AbstractFieldConnector;
 import com.vaadin.client.ui.AbstractHasComponentsConnector;
 import com.vaadin.client.ui.ConnectorFocusAndBlurHandler;
@@ -72,15 +68,6 @@ import com.vaadin.client.widget.grid.events.EditorMoveEvent;
 import com.vaadin.client.widget.grid.events.EditorOpenEvent;
 import com.vaadin.client.widget.grid.events.GridClickEvent;
 import com.vaadin.client.widget.grid.events.GridDoubleClickEvent;
-import com.vaadin.client.widget.grid.events.SelectAllEvent;
-import com.vaadin.client.widget.grid.events.SelectAllHandler;
-import com.vaadin.client.widget.grid.selection.AbstractRowHandleSelectionModel;
-import com.vaadin.client.widget.grid.selection.SelectionEvent;
-import com.vaadin.client.widget.grid.selection.SelectionHandler;
-import com.vaadin.client.widget.grid.selection.SelectionModel;
-import com.vaadin.client.widget.grid.selection.SelectionModelMulti;
-import com.vaadin.client.widget.grid.selection.SelectionModelNone;
-import com.vaadin.client.widget.grid.selection.SelectionModelSingle;
 import com.vaadin.client.widget.grid.sort.SortEvent;
 import com.vaadin.client.widget.grid.sort.SortHandler;
 import com.vaadin.client.widget.grid.sort.SortOrder;
@@ -99,7 +86,6 @@ import com.vaadin.shared.ui.grid.GridColumnState;
 import com.vaadin.shared.ui.grid.GridConstants;
 import com.vaadin.shared.ui.grid.GridServerRpc;
 import com.vaadin.shared.ui.grid.GridState;
-import com.vaadin.shared.ui.grid.GridState.SharedSelectionMode;
 import com.vaadin.shared.ui.grid.GridStaticSectionState;
 import com.vaadin.shared.ui.grid.GridStaticSectionState.CellState;
 import com.vaadin.shared.ui.grid.GridStaticSectionState.RowState;
@@ -584,20 +570,9 @@ public class GridConnector extends AbstractHasComponentsConnector implements
      */
     private Map<String, CustomGridColumn> columnIdToColumn = new HashMap<String, CustomGridColumn>();
 
-    private AbstractRowHandleSelectionModel<JsonObject> selectionModel;
-    private Set<String> selectedKeys = new LinkedHashSet<String>();
     private List<String> columnOrder = new ArrayList<String>();
 
     /**
-     * {@link #selectionUpdatedFromState} is set to true when
-     * {@link #updateSelectionFromState()} makes changes to selection. This flag
-     * tells the {@code internalSelectionChangeHandler} to not send same data
-     * straight back to server. Said listener sets it back to false when
-     * handling that event.
-     */
-    private boolean selectionUpdatedFromState;
-
-    /**
      * {@link #columnsUpdatedFromState} is set to true when
      * {@link #updateColumnOrderFromState(List)} is updating the column order
      * for the widget. This flag tells the {@link #columnReorderHandler} to not
@@ -608,29 +583,6 @@ public class GridConnector extends AbstractHasComponentsConnector implements
 
     private RpcDataSource dataSource;
 
-    private SelectionHandler<JsonObject> internalSelectionChangeHandler = new SelectionHandler<JsonObject>() {
-        @Override
-        public void onSelect(SelectionEvent<JsonObject> event) {
-            if (event.isBatchedSelection()) {
-                return;
-            }
-            if (!selectionUpdatedFromState) {
-                for (JsonObject row : event.getRemoved()) {
-                    selectedKeys.remove(dataSource.getRowKey(row));
-                }
-
-                for (JsonObject row : event.getAdded()) {
-                    selectedKeys.add(dataSource.getRowKey(row));
-                }
-
-                getRpcProxy(GridServerRpc.class).select(
-                        new ArrayList<String>(selectedKeys));
-            } else {
-                selectionUpdatedFromState = false;
-            }
-        }
-    };
-
     /* Used to track Grid editor columns with validation errors */
     private final Map<Column<?, JsonObject>, String> columnToErrorMessage = new HashMap<Column<?, JsonObject>, String>();
 
@@ -744,30 +696,8 @@ public class GridConnector extends AbstractHasComponentsConnector implements
             public void recalculateColumnWidths() {
                 getWidget().recalculateColumnWidths();
             }
-
-            @Override
-            public void setSelectAll(boolean allSelected) {
-                if (selectionModel instanceof SelectionModel.Multi
-                        && selectionModel.getSelectionColumnRenderer() != null) {
-                    final Widget widget;
-                    try {
-                        HeaderRow defaultHeaderRow = getWidget()
-                                .getDefaultHeaderRow();
-                        if (defaultHeaderRow != null) {
-                            widget = defaultHeaderRow.getCell(
-                                    getWidget().getColumn(0)).getWidget();
-                            ((CheckBox) widget).setValue(allSelected, false);
-                        }
-                    } catch (Exception e) {
-                        getLogger().warning(
-                                "Problems finding select all checkbox.");
-                    }
-                }
-            }
         });
 
-        getWidget().addSelectionHandler(internalSelectionChangeHandler);
-
         /* Item click events */
         getWidget().addBodyClickHandler(itemClickHandler);
         getWidget().addBodyDoubleClickHandler(itemClickHandler);
@@ -800,15 +730,6 @@ public class GridConnector extends AbstractHasComponentsConnector implements
             }
         });
 
-        getWidget().addSelectAllHandler(new SelectAllHandler<JsonObject>() {
-
-            @Override
-            public void onSelectAll(SelectAllEvent<JsonObject> event) {
-                getRpcProxy(GridServerRpc.class).selectAll();
-            }
-
-        });
-
         getWidget().setEditorHandler(editorHandler);
         getWidget().addColumnReorderHandler(columnReorderHandler);
         getWidget().addColumnVisibilityChangeHandler(
@@ -884,19 +805,6 @@ public class GridConnector extends AbstractHasComponentsConnector implements
             updateFooterFromState(getState().footer);
         }
 
-        // Selection
-        if (stateChangeEvent.hasPropertyChanged("selectionMode")) {
-            onSelectionModeChange();
-            updateSelectDeselectAllowed();
-        } else if (stateChangeEvent
-                .hasPropertyChanged("singleSelectDeselectAllowed")) {
-            updateSelectDeselectAllowed();
-        }
-
-        if (stateChangeEvent.hasPropertyChanged("selectedKeys")) {
-            updateSelectionFromState();
-        }
-
         // Sorting
         if (stateChangeEvent.hasPropertyChanged("sortColumns")
                 || stateChangeEvent.hasPropertyChanged("sortDirs")) {
@@ -923,14 +831,6 @@ public class GridConnector extends AbstractHasComponentsConnector implements
         }
     }
 
-    private void updateSelectDeselectAllowed() {
-        SelectionModel<JsonObject> model = getWidget().getSelectionModel();
-        if (model instanceof SelectionModel.Single<?>) {
-            ((SelectionModel.Single<?>) model)
-                    .setDeselectAllowed(getState().singleSelectDeselectAllowed);
-        }
-    }
-
     private void updateColumnOrderFromState(List<String> stateColumnOrder) {
         CustomGridColumn[] columns = new CustomGridColumn[stateColumnOrder
                 .size()];
@@ -1103,20 +1003,6 @@ public class GridConnector extends AbstractHasComponentsConnector implements
     }
 
     /**
-     * If we have a selection column renderer, we need to offset the index by
-     * one when referring to the column index in the widget.
-     */
-    private int getWidgetColumnIndex(final int columnIndex) {
-        Renderer<Boolean> selectionColumnRenderer = getWidget()
-                .getSelectionModel().getSelectionColumnRenderer();
-        int widgetColumnIndex = columnIndex;
-        if (selectionColumnRenderer != null) {
-            widgetColumnIndex++;
-        }
-        return widgetColumnIndex;
-    }
-
-    /**
      * Updates the column values from a state
      * 
      * @param column
@@ -1178,63 +1064,6 @@ public class GridConnector extends AbstractHasComponentsConnector implements
         getWidget().setDataSource(this.dataSource);
     }
 
-    private void onSelectionModeChange() {
-        SharedSelectionMode mode = getState().selectionMode;
-        if (mode == null) {
-            getLogger().fine("ignored mode change");
-            return;
-        }
-
-        AbstractRowHandleSelectionModel<JsonObject> model = createSelectionModel(mode);
-        if (selectionModel == null
-                || !model.getClass().equals(selectionModel.getClass())) {
-            selectionModel = model;
-            getWidget().setSelectionModel(model);
-            selectedKeys.clear();
-        }
-    }
-
-    private void updateSelectionFromState() {
-        boolean changed = false;
-
-        List<String> stateKeys = getState().selectedKeys;
-
-        // find new deselections
-        for (String key : selectedKeys) {
-            if (!stateKeys.contains(key)) {
-                changed = true;
-                deselectByHandle(dataSource.getHandleByKey(key));
-            }
-        }
-
-        // find new selections
-        for (String key : stateKeys) {
-            if (!selectedKeys.contains(key)) {
-                changed = true;
-                selectByHandle(dataSource.getHandleByKey(key));
-            }
-        }
-
-        /*
-         * A defensive copy in case the collection in the state is mutated
-         * instead of re-assigned.
-         */
-        selectedKeys = new LinkedHashSet<String>(stateKeys);
-
-        /*
-         * We need to fire this event so that Grid is able to re-render the
-         * selection changes (if applicable).
-         */
-        if (changed) {
-            // At least for now there's no way to send the selected and/or
-            // deselected row data. Some data is only stored as keys
-            selectionUpdatedFromState = true;
-            getWidget().fireEvent(
-                    new SelectionEvent<JsonObject>(getWidget(),
-                            (List<JsonObject>) null, null, false));
-        }
-    }
-
     private void onSortStateChange() {
         List<SortOrder> sortOrder = new ArrayList<SortOrder>();
 
@@ -1253,41 +1082,6 @@ public class GridConnector extends AbstractHasComponentsConnector implements
         return Logger.getLogger(getClass().getName());
     }
 
-    @SuppressWarnings("static-method")
-    private AbstractRowHandleSelectionModel<JsonObject> createSelectionModel(
-            SharedSelectionMode mode) {
-        switch (mode) {
-        case SINGLE:
-            return new SelectionModelSingle<JsonObject>();
-        case MULTI:
-            return new SelectionModelMulti<JsonObject>();
-        case NONE:
-            return new SelectionModelNone<JsonObject>();
-        default:
-            throw new IllegalStateException("unexpected mode value: " + mode);
-        }
-    }
-
-    /**
-     * A workaround method for accessing the protected method
-     * {@code AbstractRowHandleSelectionModel.selectByHandle}
-     */
-    private native void selectByHandle(RowHandle<JsonObject> handle)
-    /*-{
-        var model = this.@com.vaadin.client.connectors.GridConnector::selectionModel;
-        model.@com.vaadin.client.widget.grid.selection.AbstractRowHandleSelectionModel::selectByHandle(*)(handle);
-    }-*/;
-
-    /**
-     * A workaround method for accessing the protected method
-     * {@code AbstractRowHandleSelectionModel.deselectByHandle}
-     */
-    private native void deselectByHandle(RowHandle<JsonObject> handle)
-    /*-{
-        var model = this.@com.vaadin.client.connectors.GridConnector::selectionModel;
-        model.@com.vaadin.client.widget.grid.selection.AbstractRowHandleSelectionModel::deselectByHandle(*)(handle);
-    }-*/;
-
     /**
      * Gets the row key for a row object.
      * 
@@ -1312,7 +1106,6 @@ public class GridConnector extends AbstractHasComponentsConnector implements
     @Override
     public void updateCaption(ComponentConnector connector) {
         // TODO Auto-generated method stub
-
     }
 
     @Override
diff --git a/client/src/com/vaadin/client/connectors/MultiSelectionModelConnector.java b/client/src/com/vaadin/client/connectors/MultiSelectionModelConnector.java
new file mode 100644
index 0000000000..c1f5d87d68
--- /dev/null
+++ b/client/src/com/vaadin/client/connectors/MultiSelectionModelConnector.java
@@ -0,0 +1,360 @@
+/*
+ * 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.client.connectors;
+
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Collection;
+import java.util.Collections;
+import java.util.HashSet;
+import java.util.List;
+import java.util.Set;
+
+import com.google.gwt.event.shared.HandlerRegistration;
+import com.google.gwt.user.client.ui.CheckBox;
+import com.vaadin.client.ServerConnector;
+import com.vaadin.client.annotations.OnStateChange;
+import com.vaadin.client.data.DataSource;
+import com.vaadin.client.data.DataSource.RowHandle;
+import com.vaadin.client.renderers.ComplexRenderer;
+import com.vaadin.client.renderers.Renderer;
+import com.vaadin.client.widget.grid.DataAvailableEvent;
+import com.vaadin.client.widget.grid.DataAvailableHandler;
+import com.vaadin.client.widget.grid.events.SelectAllEvent;
+import com.vaadin.client.widget.grid.events.SelectAllHandler;
+import com.vaadin.client.widget.grid.selection.MultiSelectionRenderer;
+import com.vaadin.client.widget.grid.selection.SelectionModel;
+import com.vaadin.client.widget.grid.selection.SelectionModel.Multi;
+import com.vaadin.client.widget.grid.selection.SpaceSelectHandler;
+import com.vaadin.client.widgets.Grid;
+import com.vaadin.client.widgets.Grid.HeaderCell;
+import com.vaadin.shared.ui.Connect;
+import com.vaadin.shared.ui.grid.GridState;
+import com.vaadin.shared.ui.grid.Range;
+import com.vaadin.shared.ui.grid.selection.MultiSelectionModelServerRpc;
+import com.vaadin.shared.ui.grid.selection.MultiSelectionModelState;
+import com.vaadin.ui.Grid.MultiSelectionModel;
+
+import elemental.json.JsonObject;
+
+/**
+ * Connector for server-side {@link MultiSelectionModel}.
+ * 
+ * @since
+ * @author Vaadin Ltd
+ */
+@Connect(MultiSelectionModel.class)
+public class MultiSelectionModelConnector extends
+        AbstractSelectionModelConnector<SelectionModel.Multi<JsonObject>> {
+
+    private Multi<JsonObject> selectionModel = createSelectionModel();
+    private SpaceSelectHandler<JsonObject> spaceHandler;
+
+    @Override
+    protected void extend(ServerConnector target) {
+        getGrid().setSelectionModel(selectionModel);
+        spaceHandler = new SpaceSelectHandler<JsonObject>(getGrid());
+    }
+
+    @Override
+    public void onUnregister() {
+        spaceHandler.removeHandler();
+    }
+
+    @Override
+    protected Multi<JsonObject> createSelectionModel() {
+        return new MultiSelectionModel();
+    }
+
+    @Override
+    public MultiSelectionModelState getState() {
+        return (MultiSelectionModelState) super.getState();
+    }
+
+    @OnStateChange("allSelected")
+    void updateSelectAllCheckbox() {
+        if (selectionModel.getSelectionColumnRenderer() != null) {
+            HeaderCell cell = getGrid().getDefaultHeaderRow().getCell(
+                    getGrid().getColumn(0));
+            CheckBox widget = (CheckBox) cell.getWidget();
+            widget.setValue(getState().allSelected, false);
+        }
+    }
+
+    protected class MultiSelectionModel extends AbstractSelectionModel
+            implements SelectionModel.Multi.Batched<JsonObject> {
+
+        private ComplexRenderer<Boolean> renderer = null;
+        private Set<RowHandle<JsonObject>> selected = new HashSet<RowHandle<JsonObject>>();
+        private Set<RowHandle<JsonObject>> deselected = new HashSet<RowHandle<JsonObject>>();
+        private HandlerRegistration selectAll;
+        private HandlerRegistration dataAvailable;
+        private Range availableRows;
+        private boolean batchSelect = false;
+
+        @Override
+        public void setGrid(Grid<JsonObject> grid) {
+            super.setGrid(grid);
+            if (grid != null) {
+                renderer = createSelectionColumnRenderer(grid);
+                selectAll = getGrid().addSelectAllHandler(
+                        new SelectAllHandler<JsonObject>() {
+
+                            @Override
+                            public void onSelectAll(
+                                    SelectAllEvent<JsonObject> event) {
+                                selectAll();
+                            }
+                        });
+                dataAvailable = getGrid().addDataAvailableHandler(
+                        new DataAvailableHandler() {
+
+                            @Override
+                            public void onDataAvailable(DataAvailableEvent event) {
+                                availableRows = event.getAvailableRows();
+                            }
+                        });
+            } else if (renderer != null) {
+                renderer.destroy();
+                selectAll.removeHandler();
+                dataAvailable.removeHandler();
+                renderer = null;
+            }
+        }
+
+        /**
+         * Creates a selection column renderer. This method can be overridden to
+         * use a custom renderer or use {@code null} to disable the selection
+         * column.
+         * 
+         * @param grid
+         *            the grid for this selection model
+         * @return selection column renderer or {@code null} if not needed
+         */
+        protected ComplexRenderer<Boolean> createSelectionColumnRenderer(
+                Grid<JsonObject> grid) {
+            return new MultiSelectionRenderer<JsonObject>(grid);
+        }
+
+        /**
+         * Selects all available rows, sends request to server to select
+         * everything.
+         */
+        public void selectAll() {
+            assert !isBeingBatchSelected() : "Can't select all in middle of a batch selection.";
+
+            Set<RowHandle<JsonObject>> rows = new HashSet<DataSource.RowHandle<JsonObject>>();
+            DataSource<JsonObject> dataSource = getGrid().getDataSource();
+            for (int i = availableRows.getStart(); i < availableRows.getEnd(); ++i) {
+                final JsonObject row = dataSource.getRow(i);
+                if (row != null) {
+                    RowHandle<JsonObject> handle = dataSource.getHandle(row);
+                    markAsSelected(handle, true);
+                    rows.add(handle);
+                }
+            }
+
+            getRpcProxy(MultiSelectionModelServerRpc.class).selectAll();
+            cleanRowCache(rows);
+        }
+
+        @Override
+        public Renderer<Boolean> getSelectionColumnRenderer() {
+            return renderer;
+        }
+
+        /**
+         * {@inheritDoc}
+         * 
+         * @return {@code false} if rows is empty, else {@code true}
+         */
+        @Override
+        public boolean select(JsonObject... rows) {
+            return select(Arrays.asList(rows));
+        }
+
+        /**
+         * {@inheritDoc}
+         * 
+         * @return {@code false} if rows is empty, else {@code true}
+         */
+        @Override
+        public boolean deselect(JsonObject... rows) {
+            return deselect(Arrays.asList(rows));
+        }
+
+        /**
+         * {@inheritDoc}
+         * 
+         * @return always {@code true}
+         */
+        @Override
+        public boolean deselectAll() {
+            assert !isBeingBatchSelected() : "Can't select all in middle of a batch selection.";
+
+            Set<RowHandle<JsonObject>> rows = new HashSet<DataSource.RowHandle<JsonObject>>();
+            DataSource<JsonObject> dataSource = getGrid().getDataSource();
+            for (int i = availableRows.getStart(); i < availableRows.getEnd(); ++i) {
+                final JsonObject row = dataSource.getRow(i);
+                if (row != null) {
+                    RowHandle<JsonObject> handle = dataSource.getHandle(row);
+                    markAsSelected(handle, false);
+                    rows.add(handle);
+                }
+            }
+
+            getRpcProxy(MultiSelectionModelServerRpc.class).deselectAll();
+            cleanRowCache(rows);
+
+            return true;
+        }
+
+        /**
+         * {@inheritDoc}
+         * 
+         * @return {@code false} if rows is empty, else {@code true}
+         */
+        @Override
+        public boolean select(Collection<JsonObject> rows) {
+            if (rows.isEmpty()) {
+                return false;
+            }
+
+            for (JsonObject row : rows) {
+                RowHandle<JsonObject> rowHandle = getRowHandle(row);
+                markAsSelected(rowHandle, true);
+                selected.add(rowHandle);
+            }
+
+            if (!isBeingBatchSelected()) {
+                sendSelected();
+            }
+            return true;
+        }
+
+        /**
+         * Marks the JsonObject pointed by RowHandle to have selected
+         * information equal to given boolean
+         * 
+         * @param row
+         *            row handle
+         * @param selected
+         *            should row be selected
+         */
+        protected void markAsSelected(RowHandle<JsonObject> row,
+                boolean selected) {
+            row.pin();
+            if (selected) {
+                row.getRow().put(GridState.JSONKEY_SELECTED, true);
+            } else {
+                row.getRow().remove(GridState.JSONKEY_SELECTED);
+            }
+            row.updateRow();
+        }
+
+        /**
+         * {@inheritDoc}
+         * 
+         * @return {@code false} if rows is empty, else {@code true}
+         */
+        @Override
+        public boolean deselect(Collection<JsonObject> rows) {
+            if (rows.isEmpty()) {
+                return false;
+            }
+
+            for (JsonObject row : rows) {
+                RowHandle<JsonObject> rowHandle = getRowHandle(row);
+                markAsSelected(rowHandle, false);
+                deselected.add(rowHandle);
+            }
+
+            if (!isBeingBatchSelected()) {
+                sendDeselected();
+            }
+            return true;
+        }
+
+        private void sendDeselected() {
+            getRpcProxy(MultiSelectionModelServerRpc.class).deselect(
+                    getRowKeys(deselected));
+            cleanRowCache(deselected);
+        }
+
+        private void sendSelected() {
+            getRpcProxy(MultiSelectionModelServerRpc.class).select(
+                    getRowKeys(selected));
+            cleanRowCache(selected);
+        }
+
+        private List<String> getRowKeys(Set<RowHandle<JsonObject>> handles) {
+            List<String> keys = new ArrayList<String>();
+            for (RowHandle<JsonObject> handle : handles) {
+                keys.add(getRowKey(handle.getRow()));
+            }
+            return keys;
+        }
+
+        private Set<JsonObject> getRows(Set<RowHandle<JsonObject>> handles) {
+            Set<JsonObject> rows = new HashSet<JsonObject>();
+            for (RowHandle<JsonObject> handle : handles) {
+                rows.add(handle.getRow());
+            }
+            return rows;
+        }
+
+        private void cleanRowCache(Set<RowHandle<JsonObject>> handles) {
+            for (RowHandle<JsonObject> handle : handles) {
+                handle.unpin();
+            }
+            handles.clear();
+        }
+
+        @Override
+        public void startBatchSelect() {
+            assert selected.isEmpty() && deselected.isEmpty() : "Row caches were not clear.";
+            batchSelect = true;
+        }
+
+        @Override
+        public void commitBatchSelect() {
+            assert batchSelect : "Not batch selecting.";
+            if (!selected.isEmpty()) {
+                sendSelected();
+            }
+
+            if (!deselected.isEmpty()) {
+                sendDeselected();
+            }
+            batchSelect = false;
+        }
+
+        @Override
+        public boolean isBeingBatchSelected() {
+            return batchSelect;
+        }
+
+        @Override
+        public Collection<JsonObject> getSelectedRowsBatch() {
+            return Collections.unmodifiableSet(getRows(selected));
+        }
+
+        @Override
+        public Collection<JsonObject> getDeselectedRowsBatch() {
+            return Collections.unmodifiableSet(getRows(deselected));
+        }
+    }
+}
diff --git a/client/src/com/vaadin/client/connectors/NoSelectionModelConnector.java b/client/src/com/vaadin/client/connectors/NoSelectionModelConnector.java
new file mode 100644
index 0000000000..b540eed6d5
--- /dev/null
+++ b/client/src/com/vaadin/client/connectors/NoSelectionModelConnector.java
@@ -0,0 +1,42 @@
+/*
+ * 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.client.connectors;
+
+import com.vaadin.client.ServerConnector;
+import com.vaadin.client.widget.grid.selection.SelectionModel;
+import com.vaadin.client.widget.grid.selection.SelectionModelNone;
+import com.vaadin.shared.ui.Connect;
+import com.vaadin.ui.Grid.NoSelectionModel;
+
+import elemental.json.JsonObject;
+
+/**
+ * Connector for server-side {@link NoSelectionModel}.
+ */
+@Connect(NoSelectionModel.class)
+public class NoSelectionModelConnector extends
+        AbstractSelectionModelConnector<SelectionModel<JsonObject>> {
+
+    @Override
+    protected void extend(ServerConnector target) {
+        getGrid().setSelectionModel(createSelectionModel());
+    }
+
+    @Override
+    protected SelectionModel<JsonObject> createSelectionModel() {
+        return new SelectionModelNone<JsonObject>();
+    }
+}
\ No newline at end of file
diff --git a/client/src/com/vaadin/client/connectors/RpcDataSourceConnector.java b/client/src/com/vaadin/client/connectors/RpcDataSourceConnector.java
index 78aaebaca1..bcca8816b1 100644
--- a/client/src/com/vaadin/client/connectors/RpcDataSourceConnector.java
+++ b/client/src/com/vaadin/client/connectors/RpcDataSourceConnector.java
@@ -99,8 +99,10 @@ public class RpcDataSourceConnector extends AbstractExtensionConnector {
                 }
 
                 @Override
-                public void updateRowData(JsonObject row) {
-                    RpcDataSource.this.updateRowData(row);
+                public void updateRowData(JsonArray rowArray) {
+                    for (int i = 0; i < rowArray.length(); ++i) {
+                        RpcDataSource.this.updateRowData(rowArray.getObject(i));
+                    }
                 }
             });
         }
diff --git a/client/src/com/vaadin/client/connectors/SingleSelectionModelConnector.java b/client/src/com/vaadin/client/connectors/SingleSelectionModelConnector.java
new file mode 100644
index 0000000000..7c66903c2c
--- /dev/null
+++ b/client/src/com/vaadin/client/connectors/SingleSelectionModelConnector.java
@@ -0,0 +1,148 @@
+/*
+ * 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.client.connectors;
+
+import com.vaadin.client.ServerConnector;
+import com.vaadin.client.annotations.OnStateChange;
+import com.vaadin.client.data.DataSource.RowHandle;
+import com.vaadin.client.renderers.Renderer;
+import com.vaadin.client.widget.grid.selection.ClickSelectHandler;
+import com.vaadin.client.widget.grid.selection.SelectionModel;
+import com.vaadin.client.widget.grid.selection.SelectionModel.Single;
+import com.vaadin.client.widget.grid.selection.SpaceSelectHandler;
+import com.vaadin.shared.ui.Connect;
+import com.vaadin.shared.ui.grid.GridState;
+import com.vaadin.shared.ui.grid.selection.SingleSelectionModelServerRpc;
+import com.vaadin.shared.ui.grid.selection.SingleSelectionModelState;
+import com.vaadin.ui.Grid.SingleSelectionModel;
+
+import elemental.json.JsonObject;
+
+/**
+ * Connector for server-side {@link SingleSelectionModel}.
+ * 
+ * @since
+ * @author Vaadin Ltd
+ */
+@Connect(SingleSelectionModel.class)
+public class SingleSelectionModelConnector extends
+        AbstractSelectionModelConnector<SelectionModel.Single<JsonObject>> {
+
+    private SpaceSelectHandler<JsonObject> spaceHandler;
+    private ClickSelectHandler<JsonObject> clickHandler;
+    private Single<JsonObject> selectionModel = createSelectionModel();
+
+    @Override
+    protected void extend(ServerConnector target) {
+        getGrid().setSelectionModel(selectionModel);
+        spaceHandler = new SpaceSelectHandler<JsonObject>(getGrid());
+        clickHandler = new ClickSelectHandler<JsonObject>(getGrid());
+    }
+
+    @Override
+    public SingleSelectionModelState getState() {
+        return (SingleSelectionModelState) super.getState();
+    }
+
+    @Override
+    public void onUnregister() {
+        spaceHandler.removeHandler();
+        clickHandler.removeHandler();
+
+        super.onUnregister();
+    }
+
+    @Override
+    protected Single<JsonObject> createSelectionModel() {
+        return new SingleSelectionModel();
+    }
+
+    @OnStateChange("deselectAllowed")
+    void updateDeselectAllowed() {
+        selectionModel.setDeselectAllowed(getState().deselectAllowed);
+    }
+
+    /**
+     * SingleSelectionModel without a selection column renderer.
+     */
+    public class SingleSelectionModel extends AbstractSelectionModel implements
+            SelectionModel.Single<JsonObject> {
+
+        private RowHandle<JsonObject> selectedRow;
+        private boolean deselectAllowed;
+
+        @Override
+        public Renderer<Boolean> getSelectionColumnRenderer() {
+            return null;
+        }
+
+        @Override
+        public boolean select(JsonObject row) {
+            boolean changed = false;
+            if ((row == null && isDeselectAllowed())
+                    || (row != null && !getRowHandle(row).equals(selectedRow))) {
+                if (selectedRow != null) {
+                    selectedRow.getRow().remove(GridState.JSONKEY_SELECTED);
+                    selectedRow.updateRow();
+                    selectedRow.unpin();
+                    selectedRow = null;
+                    changed = true;
+                }
+
+                if (row != null) {
+                    selectedRow = getRowHandle(row);
+                    selectedRow.pin();
+                    selectedRow.getRow().put(GridState.JSONKEY_SELECTED, true);
+                    selectedRow.updateRow();
+                    changed = true;
+                }
+            }
+
+            if (changed) {
+                getRpcProxy(SingleSelectionModelServerRpc.class).select(
+                        getRowKey(row));
+            }
+
+            return changed;
+        }
+
+        @Override
+        public boolean deselect(JsonObject row) {
+            if (getRowHandle(row).equals(selectedRow)) {
+                select(null);
+            }
+            return false;
+        }
+
+        @Override
+        public JsonObject getSelectedRow() {
+            throw new UnsupportedOperationException(
+                    "This client-side selection model "
+                            + getClass().getSimpleName()
+                            + " does not know selected row.");
+        }
+
+        @Override
+        public void setDeselectAllowed(boolean deselectAllowed) {
+            this.deselectAllowed = deselectAllowed;
+        }
+
+        @Override
+        public boolean isDeselectAllowed() {
+            return deselectAllowed;
+        }
+    }
+}
\ No newline at end of file
diff --git a/client/src/com/vaadin/client/widgets/Grid.java b/client/src/com/vaadin/client/widgets/Grid.java
index a2eedf4203..91fc87d2c7 100644
--- a/client/src/com/vaadin/client/widgets/Grid.java
+++ b/client/src/com/vaadin/client/widgets/Grid.java
@@ -5287,7 +5287,7 @@ public class Grid<T> extends ResizeComposite implements
         @Override
         public void preDetach(Row row, Iterable<FlyweightCell> cellsToDetach) {
             for (FlyweightCell cell : cellsToDetach) {
-                Renderer renderer = findRenderer(cell);
+                Renderer<?> renderer = findRenderer(cell);
                 if (renderer instanceof WidgetRenderer) {
                     try {
                         Widget w = WidgetUtil.findWidget(cell.getElement()
@@ -5317,7 +5317,7 @@ public class Grid<T> extends ResizeComposite implements
             // any more
             rowReference.set(rowIndex, null, row.getElement());
             for (FlyweightCell cell : detachedCells) {
-                Renderer renderer = findRenderer(cell);
+                Renderer<?> renderer = findRenderer(cell);
                 if (renderer instanceof ComplexRenderer) {
                     try {
                         Column<?, T> column = getVisibleColumn(cell.getColumn());
@@ -7233,12 +7233,12 @@ public class Grid<T> extends ResizeComposite implements
      *             if the current selection model is not an instance of
      *             {@link SelectionModel.Single} or {@link SelectionModel.Multi}
      */
-    @SuppressWarnings("unchecked")
     public boolean select(T row) {
         if (selectionModel instanceof SelectionModel.Single<?>) {
             return ((SelectionModel.Single<T>) selectionModel).select(row);
         } else if (selectionModel instanceof SelectionModel.Multi<?>) {
-            return ((SelectionModel.Multi<T>) selectionModel).select(row);
+            return ((SelectionModel.Multi<T>) selectionModel)
+                    .select(Collections.singleton(row));
         } else {
             throw new IllegalStateException("Unsupported selection model");
         }
@@ -7258,12 +7258,12 @@ public class Grid<T> extends ResizeComposite implements
      *             if the current selection model is not an instance of
      *             {@link SelectionModel.Single} or {@link SelectionModel.Multi}
      */
-    @SuppressWarnings("unchecked")
     public boolean deselect(T row) {
         if (selectionModel instanceof SelectionModel.Single<?>) {
             return ((SelectionModel.Single<T>) selectionModel).deselect(row);
         } else if (selectionModel instanceof SelectionModel.Multi<?>) {
-            return ((SelectionModel.Multi<T>) selectionModel).deselect(row);
+            return ((SelectionModel.Multi<T>) selectionModel)
+                    .deselect(Collections.singleton(row));
         } else {
             throw new IllegalStateException("Unsupported selection model");
         }
diff --git a/server/src/com/vaadin/data/RpcDataProviderExtension.java b/server/src/com/vaadin/data/RpcDataProviderExtension.java
index f5d712f6b2..c8f3604fd9 100644
--- a/server/src/com/vaadin/data/RpcDataProviderExtension.java
+++ b/server/src/com/vaadin/data/RpcDataProviderExtension.java
@@ -744,15 +744,11 @@ public class RpcDataProviderExtension extends AbstractExtension {
 
             // Send current rows again if needed.
             if (refreshCache) {
-                for (Object itemId : activeItemHandler.getActiveItemIds()) {
-                    internalUpdateRowData(itemId);
-                }
+                updatedItemIds.addAll(activeItemHandler.getActiveItemIds());
             }
         }
 
-        for (Object itemId : updatedItemIds) {
-            internalUpdateRowData(itemId);
-        }
+        internalUpdateRows(updatedItemIds);
 
         // Clear all changes.
         rowChanges.clear();
@@ -913,11 +909,20 @@ public class RpcDataProviderExtension extends AbstractExtension {
         updatedItemIds.add(itemId);
     }
 
-    private void internalUpdateRowData(Object itemId) {
-        if (activeItemHandler.getActiveItemIds().contains(itemId)) {
-            JsonObject row = getRowData(getGrid().getColumns(), itemId);
-            rpc.updateRowData(row);
+    private void internalUpdateRows(Set<Object> itemIds) {
+        if (itemIds.isEmpty()) {
+            return;
+        }
+
+        JsonArray rowData = Json.createArray();
+        int i = 0;
+        for (Object itemId : itemIds) {
+            if (activeItemHandler.getActiveItemIds().contains(itemId)) {
+                JsonObject row = getRowData(getGrid().getColumns(), itemId);
+                rowData.set(i++, row);
+            }
         }
+        rpc.updateRowData(rowData);
     }
 
     /**
diff --git a/server/src/com/vaadin/ui/Grid.java b/server/src/com/vaadin/ui/Grid.java
index d9c011677b..f58280c6fe 100644
--- a/server/src/com/vaadin/ui/Grid.java
+++ b/server/src/com/vaadin/ui/Grid.java
@@ -82,6 +82,7 @@ import com.vaadin.server.AbstractClientConnector;
 import com.vaadin.server.AbstractExtension;
 import com.vaadin.server.EncodeResult;
 import com.vaadin.server.ErrorMessage;
+import com.vaadin.server.Extension;
 import com.vaadin.server.JsonCodec;
 import com.vaadin.server.KeyMapper;
 import com.vaadin.server.VaadinSession;
@@ -94,13 +95,16 @@ import com.vaadin.shared.ui.grid.GridColumnState;
 import com.vaadin.shared.ui.grid.GridConstants;
 import com.vaadin.shared.ui.grid.GridServerRpc;
 import com.vaadin.shared.ui.grid.GridState;
-import com.vaadin.shared.ui.grid.GridState.SharedSelectionMode;
 import com.vaadin.shared.ui.grid.GridStaticCellType;
 import com.vaadin.shared.ui.grid.GridStaticSectionState;
 import com.vaadin.shared.ui.grid.GridStaticSectionState.CellState;
 import com.vaadin.shared.ui.grid.GridStaticSectionState.RowState;
 import com.vaadin.shared.ui.grid.HeightMode;
 import com.vaadin.shared.ui.grid.ScrollDestination;
+import com.vaadin.shared.ui.grid.selection.MultiSelectionModelServerRpc;
+import com.vaadin.shared.ui.grid.selection.MultiSelectionModelState;
+import com.vaadin.shared.ui.grid.selection.SingleSelectionModelServerRpc;
+import com.vaadin.shared.ui.grid.selection.SingleSelectionModelState;
 import com.vaadin.shared.util.SharedUtil;
 import com.vaadin.ui.declarative.DesignAttributeHandler;
 import com.vaadin.ui.declarative.DesignContext;
@@ -111,7 +115,6 @@ import com.vaadin.ui.renderers.TextRenderer;
 import com.vaadin.util.ReflectTools;
 
 import elemental.json.Json;
-import elemental.json.JsonArray;
 import elemental.json.JsonObject;
 import elemental.json.JsonValue;
 
@@ -710,8 +713,9 @@ public class Grid extends AbstractFocusable implements SelectionNotifier,
 
     /**
      * The server-side interface that controls Grid's selection state.
+     * SelectionModel should extend {@link AbstractGridExtension}.
      */
-    public interface SelectionModel extends Serializable {
+    public interface SelectionModel extends Serializable, Extension {
         /**
          * Checks whether an item is selected or not.
          * 
@@ -730,6 +734,8 @@ public class Grid extends AbstractFocusable implements SelectionNotifier,
 
         /**
          * Injects the current {@link Grid} instance into the SelectionModel.
+         * This method should usually call the extend method of
+         * {@link AbstractExtension}.
          * <p>
          * <em>Note:</em> This method should not be called manually.
          * 
@@ -971,10 +977,9 @@ public class Grid extends AbstractFocusable implements SelectionNotifier,
      * A base class for SelectionModels that contains some of the logic that is
      * reusable.
      */
-    public static abstract class AbstractSelectionModel implements
-            SelectionModel {
+    public static abstract class AbstractSelectionModel extends
+            AbstractGridExtension implements SelectionModel, DataGenerator {
         protected final LinkedHashSet<Object> selection = new LinkedHashSet<Object>();
-        protected Grid grid = null;
 
         @Override
         public boolean isSelected(final Object itemId) {
@@ -988,7 +993,9 @@ public class Grid extends AbstractFocusable implements SelectionNotifier,
 
         @Override
         public void setGrid(final Grid grid) {
-            this.grid = grid;
+            if (grid != null) {
+                extend(grid);
+            }
         }
 
         /**
@@ -1002,7 +1009,7 @@ public class Grid extends AbstractFocusable implements SelectionNotifier,
          */
         protected void checkItemIdExists(Object itemId)
                 throws IllegalArgumentException {
-            if (!grid.getContainerDataSource().containsId(itemId)) {
+            if (!getParentGrid().getContainerDataSource().containsId(itemId)) {
                 throw new IllegalArgumentException("Given item id (" + itemId
                         + ") does not exist in the container");
             }
@@ -1044,7 +1051,19 @@ public class Grid extends AbstractFocusable implements SelectionNotifier,
         protected void fireSelectionEvent(
                 final Collection<Object> oldSelection,
                 final Collection<Object> newSelection) {
-            grid.fireSelectionEvent(oldSelection, newSelection);
+            getParentGrid().fireSelectionEvent(oldSelection, newSelection);
+        }
+
+        @Override
+        public void generateData(Object itemId, Item item, JsonObject rowData) {
+            if (isSelected(itemId)) {
+                rowData.put(GridState.JSONKEY_SELECTED, true);
+            }
+        }
+
+        @Override
+        protected Object getItemId(String rowKey) {
+            return rowKey != null ? super.getItemId(rowKey) : null;
         }
     }
 
@@ -1053,8 +1072,25 @@ public class Grid extends AbstractFocusable implements SelectionNotifier,
      */
     public static class SingleSelectionModel extends AbstractSelectionModel
             implements SelectionModel.Single {
+
+        @Override
+        protected void extend(AbstractClientConnector target) {
+            super.extend(target);
+            registerRpc(new SingleSelectionModelServerRpc() {
+
+                @Override
+                public void select(String rowKey) {
+                    SingleSelectionModel.this.select(getItemId(rowKey), false);
+                }
+            });
+        }
+
         @Override
         public boolean select(final Object itemId) {
+            return select(itemId, true);
+        }
+
+        protected boolean select(final Object itemId, boolean refresh) {
             if (itemId == null) {
                 return deselect(getSelectedRow());
             }
@@ -1066,7 +1102,7 @@ public class Grid extends AbstractFocusable implements SelectionNotifier,
             if (modified) {
                 final Collection<Object> deselected;
                 if (selectedRow != null) {
-                    deselectInternal(selectedRow, false);
+                    deselectInternal(selectedRow, false, true);
                     deselected = Collections.singleton(selectedRow);
                 } else {
                     deselected = Collections.emptySet();
@@ -1075,19 +1111,28 @@ public class Grid extends AbstractFocusable implements SelectionNotifier,
                 fireSelectionEvent(deselected, selection);
             }
 
+            if (refresh) {
+                refreshRow(itemId);
+            }
+
             return modified;
         }
 
         private boolean deselect(final Object itemId) {
-            return deselectInternal(itemId, true);
+            return deselectInternal(itemId, true, true);
         }
 
         private boolean deselectInternal(final Object itemId,
-                boolean fireEventIfNeeded) {
+                boolean fireEventIfNeeded, boolean refresh) {
             final boolean modified = selection.remove(itemId);
-            if (fireEventIfNeeded && modified) {
-                fireSelectionEvent(Collections.singleton(itemId),
-                        Collections.emptySet());
+            if (modified) {
+                if (refresh) {
+                    refreshRow(itemId);
+                }
+                if (fireEventIfNeeded) {
+                    fireSelectionEvent(Collections.singleton(itemId),
+                            Collections.emptySet());
+                }
             }
             return modified;
         }
@@ -1113,23 +1158,25 @@ public class Grid extends AbstractFocusable implements SelectionNotifier,
 
         @Override
         public void setDeselectAllowed(boolean deselectAllowed) {
-            grid.getState().singleSelectDeselectAllowed = deselectAllowed;
+            getState().deselectAllowed = deselectAllowed;
         }
 
         @Override
         public boolean isDeselectAllowed() {
-            return grid.getState(false).singleSelectDeselectAllowed;
+            return getState().deselectAllowed;
+        }
+
+        @Override
+        protected SingleSelectionModelState getState() {
+            return (SingleSelectionModelState) super.getState();
         }
     }
 
     /**
      * A default implementation for a {@link SelectionModel.None}
      */
-    public static class NoSelectionModel implements SelectionModel.None {
-        @Override
-        public void setGrid(final Grid grid) {
-            // NOOP, not needed for anything
-        }
+    public static class NoSelectionModel extends AbstractSelectionModel
+            implements SelectionModel.None {
 
         @Override
         public boolean isSelected(final Object itemId) {
@@ -1167,7 +1214,40 @@ public class Grid extends AbstractFocusable implements SelectionNotifier,
 
         private int selectionLimit = DEFAULT_MAX_SELECTIONS;
 
-        private boolean allSelected;
+        @Override
+        protected void extend(AbstractClientConnector target) {
+            super.extend(target);
+            registerRpc(new MultiSelectionModelServerRpc() {
+
+                @Override
+                public void select(List<String> rowKeys) {
+                    List<Object> items = new ArrayList<Object>();
+                    for (String rowKey : rowKeys) {
+                        items.add(getItemId(rowKey));
+                    }
+                    MultiSelectionModel.this.select(items, false);
+                }
+
+                @Override
+                public void deselect(List<String> rowKeys) {
+                    List<Object> items = new ArrayList<Object>();
+                    for (String rowKey : rowKeys) {
+                        items.add(getItemId(rowKey));
+                    }
+                    MultiSelectionModel.this.deselect(items, false);
+                }
+
+                @Override
+                public void selectAll() {
+                    MultiSelectionModel.this.selectAll(false);
+                }
+
+                @Override
+                public void deselectAll() {
+                    MultiSelectionModel.this.deselectAll(false);
+                }
+            });
+        }
 
         @Override
         public boolean select(final Object... itemIds)
@@ -1190,6 +1270,10 @@ public class Grid extends AbstractFocusable implements SelectionNotifier,
         @Override
         public boolean select(final Collection<?> itemIds)
                 throws IllegalArgumentException {
+            return select(itemIds, true);
+        }
+
+        protected boolean select(final Collection<?> itemIds, boolean refresh) {
             if (itemIds == null) {
                 throw new IllegalArgumentException("itemIds may not be null");
             }
@@ -1217,6 +1301,12 @@ public class Grid extends AbstractFocusable implements SelectionNotifier,
 
             updateAllSelectedState();
 
+            if (refresh) {
+                for (Object itemId : itemIds) {
+                    refreshRow(itemId);
+                }
+            }
+
             return selectionWillChange;
         }
 
@@ -1270,6 +1360,10 @@ public class Grid extends AbstractFocusable implements SelectionNotifier,
         @Override
         public boolean deselect(final Collection<?> itemIds)
                 throws IllegalArgumentException {
+            return deselect(itemIds, true);
+        }
+
+        protected boolean deselect(final Collection<?> itemIds, boolean refresh) {
             if (itemIds == null) {
                 throw new IllegalArgumentException("itemIds may not be null");
             }
@@ -1285,15 +1379,25 @@ public class Grid extends AbstractFocusable implements SelectionNotifier,
 
             updateAllSelectedState();
 
+            if (refresh) {
+                for (Object itemId : itemIds) {
+                    refreshRow(itemId);
+                }
+            }
+
             return hasCommonElements;
         }
 
         @Override
         public boolean selectAll() {
+            return selectAll(true);
+        }
+
+        protected boolean selectAll(boolean refresh) {
             // select will fire the event
-            final Indexed container = grid.getContainerDataSource();
+            final Indexed container = getParentGrid().getContainerDataSource();
             if (container != null) {
-                return select(container.getItemIds());
+                return select(container.getItemIds(), refresh);
             } else if (selection.isEmpty()) {
                 return false;
             } else {
@@ -1302,14 +1406,18 @@ public class Grid extends AbstractFocusable implements SelectionNotifier,
                  * but I guess the only theoretically correct course of
                  * action...
                  */
-                return deselectAll();
+                return deselectAll(false);
             }
         }
 
         @Override
         public boolean deselectAll() {
+            return deselectAll(true);
+        }
+
+        protected boolean deselectAll(boolean refresh) {
             // deselect will fire the event
-            return deselect(getSelectedRows());
+            return deselect(getSelectedRows(), refresh);
         }
 
         /**
@@ -1382,11 +1490,15 @@ public class Grid extends AbstractFocusable implements SelectionNotifier,
         }
 
         private void updateAllSelectedState() {
-            if (allSelected != selection.size() >= selectionLimit) {
-                allSelected = selection.size() >= selectionLimit;
-                grid.getRpcProxy(GridClientRpc.class).setSelectAll(allSelected);
+            if (getState().allSelected != selection.size() >= selectionLimit) {
+                getState().allSelected = selection.size() >= selectionLimit;
             }
         }
+
+        @Override
+        protected MultiSelectionModelState getState() {
+            return (MultiSelectionModelState) super.getState();
+        }
     }
 
     /**
@@ -1571,7 +1683,7 @@ public class Grid extends AbstractFocusable implements SelectionNotifier,
      * Grid rows. If a description is generated for a row, it is used for all
      * the cells in the row for which a {@link CellDescriptionGenerator cell
      * description} is not generated.
-     *
+     * 
      * @see Grid#setRowDescriptionGenerator(CellDescriptionGenerator)
      * 
      * @since 7.6
@@ -3783,6 +3895,17 @@ public class Grid extends AbstractFocusable implements SelectionNotifier,
                                 + " instead");
             }
         }
+
+        /**
+         * Resends the row data for given item id to the client.
+         * 
+         * @since
+         * @param itemId
+         *            row to refresh
+         */
+        protected void refreshRow(Object itemId) {
+            getParentGrid().datasourceExtension.updateRowData(itemId);
+        }
     }
 
     /**
@@ -3982,117 +4105,10 @@ public class Grid extends AbstractFocusable implements SelectionNotifier,
      */
     private void initGrid() {
         setSelectionMode(getDefaultSelectionMode());
-        addSelectionListener(new SelectionListener() {
-            @Override
-            public void select(SelectionEvent event) {
-                if (applyingSelectionFromClient) {
-                    /*
-                     * Avoid sending changes back to the client if they
-                     * originated from the client. Instead, the RPC handler is
-                     * responsible for keeping track of the resulting selection
-                     * state and notifying the client if it doens't match the
-                     * expectation.
-                     */
-                    return;
-                }
-
-                /*
-                 * The rows are pinned here to ensure that the client gets the
-                 * correct key from server when the selected row is first
-                 * loaded.
-                 * 
-                 * Once the client has gotten info that it is supposed to select
-                 * a row, it will pin the data from the client side as well and
-                 * it will be unpinned once it gets deselected. Nothing on the
-                 * server side should ever unpin anything from KeyMapper.
-                 * Pinning is mostly a client feature and is only used when
-                 * selecting something from the server side.
-                 */
-                for (Object addedItemId : event.getAdded()) {
-                    if (!getKeyMapper().isPinned(addedItemId)) {
-                        getKeyMapper().pin(addedItemId);
-                    }
-                }
-
-                getState().selectedKeys = getKeyMapper().getKeys(
-                        getSelectedRows());
-            }
-        });
 
         registerRpc(new GridServerRpc() {
 
             @Override
-            public void select(List<String> selection) {
-                Collection<Object> receivedSelection = getKeyMapper()
-                        .getItemIds(selection);
-
-                applyingSelectionFromClient = true;
-                try {
-                    SelectionModel selectionModel = getSelectionModel();
-                    if (selectionModel instanceof SelectionModel.Single
-                            && selection.size() <= 1) {
-                        Object select = null;
-                        if (selection.size() == 1) {
-                            select = getKeyMapper().getItemId(selection.get(0));
-                        }
-                        ((SelectionModel.Single) selectionModel).select(select);
-                    } else if (selectionModel instanceof SelectionModel.Multi) {
-                        ((SelectionModel.Multi) selectionModel)
-                                .setSelected(receivedSelection);
-                    } else {
-                        throw new IllegalStateException("SelectionModel "
-                                + selectionModel.getClass().getSimpleName()
-                                + " does not support selecting the given "
-                                + selection.size() + " items.");
-                    }
-                } finally {
-                    applyingSelectionFromClient = false;
-                }
-
-                Collection<Object> actualSelection = getSelectedRows();
-
-                // Make sure all selected rows are pinned
-                for (Object itemId : actualSelection) {
-                    if (!getKeyMapper().isPinned(itemId)) {
-                        getKeyMapper().pin(itemId);
-                    }
-                }
-
-                // Don't mark as dirty since this might be the expected state
-                getState(false).selectedKeys = getKeyMapper().getKeys(
-                        actualSelection);
-
-                JsonObject diffState = getUI().getConnectorTracker()
-                        .getDiffState(Grid.this);
-
-                final String diffstateKey = "selectedKeys";
-
-                assert diffState.hasKey(diffstateKey) : "Field name has changed";
-
-                if (receivedSelection.equals(actualSelection)) {
-                    /*
-                     * We ended up with the same selection state that the client
-                     * sent us. There's nothing to send back to the client, just
-                     * update the diffstate so subsequent changes will be
-                     * detected.
-                     */
-                    JsonArray diffSelected = Json.createArray();
-                    for (String rowKey : getState(false).selectedKeys) {
-                        diffSelected.set(diffSelected.length(), rowKey);
-                    }
-                    diffState.put(diffstateKey, diffSelected);
-                } else {
-                    /*
-                     * Actual selection is not what the client expects. Make
-                     * sure the client gets a state change event by clearing the
-                     * diffstate and marking as dirty
-                     */
-                    diffState.remove(diffstateKey);
-                    markAsDirty();
-                }
-            }
-
-            @Override
             public void sort(String[] columnIds, SortDirection[] directions,
                     boolean userOriginated) {
                 assert columnIds.length == directions.length;
@@ -4121,13 +4137,6 @@ public class Grid extends AbstractFocusable implements SelectionNotifier,
             }
 
             @Override
-            public void selectAll() {
-                assert getSelectionModel() instanceof SelectionModel.Multi : "Not a multi selection model!";
-
-                ((SelectionModel.Multi) getSelectionModel()).selectAll();
-            }
-
-            @Override
             public void itemClick(String rowKey, String columnId,
                     MouseEventDetails details) {
                 Object itemId = getKeyMapper().getItemId(rowKey);
@@ -5019,25 +5028,11 @@ public class Grid extends AbstractFocusable implements SelectionNotifier,
         if (this.selectionModel != selectionModel) {
             // this.selectionModel is null on init
             if (this.selectionModel != null) {
-                this.selectionModel.reset();
-                this.selectionModel.setGrid(null);
+                this.selectionModel.remove();
             }
 
             this.selectionModel = selectionModel;
-            this.selectionModel.setGrid(this);
-            this.selectionModel.reset();
-
-            if (selectionModel.getClass().equals(SingleSelectionModel.class)) {
-                getState().selectionMode = SharedSelectionMode.SINGLE;
-            } else if (selectionModel.getClass().equals(
-                    MultiSelectionModel.class)) {
-                getState().selectionMode = SharedSelectionMode.MULTI;
-            } else if (selectionModel.getClass().equals(NoSelectionModel.class)) {
-                getState().selectionMode = SharedSelectionMode.NONE;
-            } else {
-                throw new UnsupportedOperationException("Grid currently "
-                        + "supports only its own bundled selection models");
-            }
+            selectionModel.setGrid(this);
         }
     }
 
diff --git a/shared/src/com/vaadin/shared/data/DataProviderRpc.java b/shared/src/com/vaadin/shared/data/DataProviderRpc.java
index 28e50d9747..05965ea56c 100644
--- a/shared/src/com/vaadin/shared/data/DataProviderRpc.java
+++ b/shared/src/com/vaadin/shared/data/DataProviderRpc.java
@@ -20,7 +20,6 @@ import com.vaadin.shared.annotations.NoLayout;
 import com.vaadin.shared.communication.ClientRpc;
 
 import elemental.json.JsonArray;
-import elemental.json.JsonObject;
 
 /**
  * RPC interface used for pushing container data to the client.
@@ -94,13 +93,14 @@ public interface DataProviderRpc extends ClientRpc {
     public void resetDataAndSize(int size);
 
     /**
-     * Informs the client that a row has updated. The client-side DataSource
-     * will map the given data to correct index if it should be in the cache.
+     * Informs the client that rows have been updated. The client-side
+     * DataSource will map the given data to correct index if it should be in
+     * the cache.
      * 
      * @since 7.6
-     * @param row
-     *            the updated row data
+     * @param rowArray
+     *            array of updated rows
      */
     @NoLayout
-    public void updateRowData(JsonObject row);
+    public void updateRowData(JsonArray rowArray);
 }
diff --git a/shared/src/com/vaadin/shared/ui/grid/GridClientRpc.java b/shared/src/com/vaadin/shared/ui/grid/GridClientRpc.java
index 8711a757a1..ac1b1d5a78 100644
--- a/shared/src/com/vaadin/shared/ui/grid/GridClientRpc.java
+++ b/shared/src/com/vaadin/shared/ui/grid/GridClientRpc.java
@@ -55,15 +55,4 @@ public interface GridClientRpc extends ClientRpc {
      * Command client Grid to recalculate column widths.
      */
     public void recalculateColumnWidths();
-
-    /**
-     * Informs the Grid that all items have been selected or not selected on the
-     * server side.
-     * 
-     * @since 7.5.3
-     * @param allSelected
-     *            <code>true</code> to check the select all checkbox,
-     *            <code>false</code> to uncheck it.
-     */
-    public void setSelectAll(boolean allSelected);
 }
diff --git a/shared/src/com/vaadin/shared/ui/grid/GridServerRpc.java b/shared/src/com/vaadin/shared/ui/grid/GridServerRpc.java
index a178ff63d0..8d64794b41 100644
--- a/shared/src/com/vaadin/shared/ui/grid/GridServerRpc.java
+++ b/shared/src/com/vaadin/shared/ui/grid/GridServerRpc.java
@@ -29,10 +29,6 @@ import com.vaadin.shared.data.sort.SortDirection;
  */
 public interface GridServerRpc extends ServerRpc {
 
-    void select(List<String> newSelection);
-
-    void selectAll();
-
     void sort(String[] columnIds, SortDirection[] directions,
             boolean userOriginated);
 
diff --git a/shared/src/com/vaadin/shared/ui/grid/GridState.java b/shared/src/com/vaadin/shared/ui/grid/GridState.java
index 0d0a5d3e9f..e51b1a78a7 100644
--- a/shared/src/com/vaadin/shared/ui/grid/GridState.java
+++ b/shared/src/com/vaadin/shared/ui/grid/GridState.java
@@ -129,6 +129,13 @@ public class GridState extends TabIndexState {
     public static final String JSONKEY_DETAILS_VISIBLE = "dv";
 
     /**
+     * The key that tells whether row is selected.
+     * 
+     * @since
+     */
+    public static final String JSONKEY_SELECTED = "s";
+
+    /**
      * Columns in grid.
      */
     public List<GridColumnState> columns = new ArrayList<GridColumnState>();
@@ -153,14 +160,6 @@ public class GridState extends TabIndexState {
     @DelegateToWidget
     public HeightMode heightMode = HeightMode.CSS;
 
-    // instantiated just to avoid NPEs
-    public List<String> selectedKeys = new ArrayList<String>();
-
-    public SharedSelectionMode selectionMode;
-
-    /** Whether single select mode can be cleared through the UI */
-    public boolean singleSelectDeselectAllowed = true;
-
     /** Keys of the currently sorted columns */
     public String[] sortColumns = new String[0];
 
diff --git a/shared/src/com/vaadin/shared/ui/grid/selection/MultiSelectionModelServerRpc.java b/shared/src/com/vaadin/shared/ui/grid/selection/MultiSelectionModelServerRpc.java
new file mode 100644
index 0000000000..e7324552f4
--- /dev/null
+++ b/shared/src/com/vaadin/shared/ui/grid/selection/MultiSelectionModelServerRpc.java
@@ -0,0 +1,55 @@
+/*
+ * 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.shared.ui.grid.selection;
+
+import java.util.List;
+
+import com.vaadin.shared.communication.ServerRpc;
+
+/**
+ * ServerRpc for MultiSelectionModel.
+ * 
+ * @since
+ * @author Vaadin Ltd
+ */
+public interface MultiSelectionModelServerRpc extends ServerRpc {
+
+    /**
+     * Select a list of rows based on their row keys on the server-side.
+     * 
+     * @param rowKeys
+     *            list of row keys to select
+     */
+    public void select(List<String> rowKeys);
+
+    /**
+     * Deselect a list of rows based on their row keys on the server-side.
+     * 
+     * @param rowKeys
+     *            list of row keys to deselect
+     */
+    public void deselect(List<String> rowKeys);
+
+    /**
+     * Selects all rows on the server-side.
+     */
+    public void selectAll();
+
+    /**
+     * Deselects all rows on the server-side.
+     */
+    public void deselectAll();
+}
diff --git a/shared/src/com/vaadin/shared/ui/grid/selection/MultiSelectionModelState.java b/shared/src/com/vaadin/shared/ui/grid/selection/MultiSelectionModelState.java
new file mode 100644
index 0000000000..3ffd0d0f93
--- /dev/null
+++ b/shared/src/com/vaadin/shared/ui/grid/selection/MultiSelectionModelState.java
@@ -0,0 +1,31 @@
+/*
+ * 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.shared.ui.grid.selection;
+
+import com.vaadin.shared.communication.SharedState;
+
+/**
+ * SharedState object for MultiSelectionModel.
+ * 
+ * @since
+ * @author Vaadin Ltd
+ */
+public class MultiSelectionModelState extends SharedState {
+
+    /* Select All -checkbox status */
+    public boolean allSelected;
+
+}
diff --git a/shared/src/com/vaadin/shared/ui/grid/selection/SingleSelectionModelServerRpc.java b/shared/src/com/vaadin/shared/ui/grid/selection/SingleSelectionModelServerRpc.java
new file mode 100644
index 0000000000..3e2a8ec847
--- /dev/null
+++ b/shared/src/com/vaadin/shared/ui/grid/selection/SingleSelectionModelServerRpc.java
@@ -0,0 +1,35 @@
+/*
+ * 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.shared.ui.grid.selection;
+
+import com.vaadin.shared.communication.ServerRpc;
+
+/**
+ * ServerRpc for SingleSelectionModel.
+ * 
+ * @since
+ * @author Vaadin Ltd
+ */
+public interface SingleSelectionModelServerRpc extends ServerRpc {
+
+    /**
+     * Selects a row on server-side.
+     * 
+     * @param rowKey
+     *            row key of selected row; {@code null} if deselect
+     */
+    public void select(String rowKey);
+}
diff --git a/shared/src/com/vaadin/shared/ui/grid/selection/SingleSelectionModelState.java b/shared/src/com/vaadin/shared/ui/grid/selection/SingleSelectionModelState.java
new file mode 100644
index 0000000000..719b60b2ba
--- /dev/null
+++ b/shared/src/com/vaadin/shared/ui/grid/selection/SingleSelectionModelState.java
@@ -0,0 +1,30 @@
+/*
+ * 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.shared.ui.grid.selection;
+
+import com.vaadin.shared.communication.SharedState;
+
+/**
+ * SharedState object for SingleSelectionModel.
+ * 
+ * @since
+ * @author Vaadin Ltd
+ */
+public class SingleSelectionModelState extends SharedState {
+
+    /* Allow deselecting rows */
+    public boolean deselectAllowed;
+}
diff --git a/uitest/src/com/vaadin/tests/components/grid/GridCustomSelectionModel.java b/uitest/src/com/vaadin/tests/components/grid/GridCustomSelectionModel.java
new file mode 100644
index 0000000000..008c24cdd3
--- /dev/null
+++ b/uitest/src/com/vaadin/tests/components/grid/GridCustomSelectionModel.java
@@ -0,0 +1,37 @@
+/*
+ * 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.annotations.Widgetset;
+import com.vaadin.server.VaadinRequest;
+import com.vaadin.tests.components.AbstractTestUI;
+import com.vaadin.tests.widgetset.TestingWidgetSet;
+import com.vaadin.ui.Grid.MultiSelectionModel;
+
+@Widgetset(TestingWidgetSet.NAME)
+public class GridCustomSelectionModel extends AbstractTestUI {
+
+    public static class MySelectionModel extends MultiSelectionModel {
+    }
+
+    @Override
+    protected void setup(VaadinRequest request) {
+        PersonTestGrid grid = new PersonTestGrid(500);
+        grid.setSelectionModel(new MySelectionModel());
+        addComponent(grid);
+    }
+
+}
diff --git a/uitest/src/com/vaadin/tests/components/grid/GridCustomSelectionModelTest.java b/uitest/src/com/vaadin/tests/components/grid/GridCustomSelectionModelTest.java
new file mode 100644
index 0000000000..976e1e78fe
--- /dev/null
+++ b/uitest/src/com/vaadin/tests/components/grid/GridCustomSelectionModelTest.java
@@ -0,0 +1,58 @@
+/*
+ * 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 static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertTrue;
+
+import org.junit.Test;
+import org.openqa.selenium.By;
+import org.openqa.selenium.Keys;
+
+import com.vaadin.testbench.elements.GridElement;
+import com.vaadin.testbench.elements.GridElement.GridCellElement;
+import com.vaadin.testbench.parallel.TestCategory;
+import com.vaadin.tests.tb3.MultiBrowserTest;
+
+@TestCategory("grid")
+public class GridCustomSelectionModelTest extends MultiBrowserTest {
+
+    @Test
+    public void testCustomSelectionModel() {
+        setDebug(true);
+        openTestURL();
+
+        GridElement grid = $(GridElement.class).first();
+        GridCellElement cell = grid.getCell(0, 0);
+        assertTrue("First column of Grid should not have an input element",
+                cell.findElements(By.className("input")).isEmpty());
+
+        assertFalse("Row should not be selected initially", grid.getRow(0)
+                .isSelected());
+
+        cell.click(5, 5);
+        assertTrue("Click should select row", grid.getRow(0).isSelected());
+        cell.click(5, 5);
+        assertFalse("Click should deselect row", grid.getRow(0).isSelected());
+
+        grid.sendKeys(Keys.SPACE);
+        assertTrue("Space should select row", grid.getRow(0).isSelected());
+        grid.sendKeys(Keys.SPACE);
+        assertFalse("Space should deselect row", grid.getRow(0).isSelected());
+
+        assertNoErrorNotifications();
+    }
+}
diff --git a/uitest/src/com/vaadin/tests/widgetset/client/grid/MySelectionModelConnector.java b/uitest/src/com/vaadin/tests/widgetset/client/grid/MySelectionModelConnector.java
new file mode 100644
index 0000000000..81a9ab5bf1
--- /dev/null
+++ b/uitest/src/com/vaadin/tests/widgetset/client/grid/MySelectionModelConnector.java
@@ -0,0 +1,61 @@
+/*
+ * 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.widgetset.client.grid;
+
+import com.vaadin.client.ServerConnector;
+import com.vaadin.client.connectors.MultiSelectionModelConnector;
+import com.vaadin.client.renderers.ComplexRenderer;
+import com.vaadin.client.widget.grid.selection.ClickSelectHandler;
+import com.vaadin.client.widget.grid.selection.SelectionModel.Multi;
+import com.vaadin.client.widgets.Grid;
+import com.vaadin.shared.ui.Connect;
+import com.vaadin.tests.components.grid.GridCustomSelectionModel.MySelectionModel;
+
+import elemental.json.JsonObject;
+
+@Connect(MySelectionModel.class)
+public class MySelectionModelConnector extends MultiSelectionModelConnector {
+
+    private ClickSelectHandler<JsonObject> handler;
+
+    @Override
+    protected void extend(ServerConnector target) {
+        super.extend(target);
+        handler = new ClickSelectHandler<JsonObject>(getGrid());
+    }
+
+    @Override
+    public void onUnregister() {
+        super.onUnregister();
+        handler.removeHandler();
+        handler = null;
+    }
+
+    @Override
+    protected Multi<JsonObject> createSelectionModel() {
+        return new MySelectionModel();
+    }
+
+    public class MySelectionModel extends MultiSelectionModel {
+
+        @Override
+        protected ComplexRenderer<Boolean> createSelectionColumnRenderer(
+                Grid<JsonObject> grid) {
+            // No Selection Column.
+            return null;
+        }
+    }
+}