Introduce initial data source support for Grid (#12878)

Change-Id: I2d1b2e4a797b2dac9ee97c832fcd40fb472edc08

3 files changed, 110 insertions, 0 deletions

diff --git a/shared/src/com/vaadin/shared/data/DataProviderRpc.java b/shared/src/com/vaadin/shared/data/DataProviderRpc.java
new file mode 100644
index 0000000000..7d82ecc342
--- /dev/null
+++ b/shared/src/com/vaadin/shared/data/DataProviderRpc.java
@@ -0,0 +1,40 @@
+/*
+ * Copyright 2000-2013 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.data;
+
+import java.util.List;
+
+import com.vaadin.shared.communication.ClientRpc;
+
+/**
+ * RPC interface used for pushing container data to the client.
+ * 
+ * @since 7.2
+ * @author Vaadin Ltd
+ */
+public interface DataProviderRpc extends ClientRpc {
+
+    /**
+     * Sends updated row data to a client.
+     * 
+     * @param firstRowIndex
+     *            the index of the first updated row
+     * @param rowData
+     *            the updated row data
+     */
+    public void setRowData(int firstRowIndex, List<String[]> rowData);
+}
diff --git a/shared/src/com/vaadin/shared/data/DataProviderState.java b/shared/src/com/vaadin/shared/data/DataProviderState.java
new file mode 100644
index 0000000000..2eabe0b0e1
--- /dev/null
+++ b/shared/src/com/vaadin/shared/data/DataProviderState.java
@@ -0,0 +1,32 @@
+/*
+ * Copyright 2000-2013 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.data;
+
+import com.vaadin.shared.communication.SharedState;
+
+/**
+ * Shared state used by client-side data sources.
+ * 
+ * @since 7.2
+ * @author Vaadin Ltd
+ */
+public class DataProviderState extends SharedState {
+    /**
+     * The size of the container.
+     */
+    public int containerSize;
+}
diff --git a/shared/src/com/vaadin/shared/data/DataRequestRpc.java b/shared/src/com/vaadin/shared/data/DataRequestRpc.java
new file mode 100644
index 0000000000..eaf17df8f6
--- /dev/null
+++ b/shared/src/com/vaadin/shared/data/DataRequestRpc.java
@@ -0,0 +1,38 @@
+/*
+ * Copyright 2000-2013 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.data;
+
+import com.vaadin.shared.communication.ServerRpc;
+
+/**
+ * RPC interface used for requesting container data to the client.
+ * 
+ * @since 7.2
+ * @author Vaadin Ltd
+ */
+public interface DataRequestRpc extends ServerRpc {
+
+    /**
+     * Request rows from the server.
+     * 
+     * @param firstRowIndex
+     *            the index of the first requested row
+     * @param numberOfRows
+     *            the number of requested rows
+     */
+    public void requestRows(int firstRowIndex, int numberOfRows);
+}