1 files changed, 55 insertions, 0 deletions
diff --git a/server/src/com/vaadin/terminal/Vaadin6Component.java b/server/src/com/vaadin/terminal/Vaadin6Component.java
new file mode 100644
index 0000000000..048000e31d
--- /dev/null
+++ b/server/src/com/vaadin/terminal/Vaadin6Component.java
@@ -0,0 +1,55 @@
+/* 
+ * Copyright 2011 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.terminal;
+
+import java.util.EventListener;
+
+import com.vaadin.ui.Component;
+
+/**
+ * Interface provided to ease porting of Vaadin 6 components to Vaadin 7. By
+ * implementing this interface your Component will be able to use
+ * {@link #paintContent(PaintTarget)} and
+ * {@link #changeVariables(Object, java.util.Map)} just like in Vaadin 6.
+ * 
+ * @author Vaadin Ltd
+ * @since 7.0.0
+ * 
+ */
+public interface Vaadin6Component extends VariableOwner, Component,
+        EventListener {
+
+    /**
+     * <p>
+     * Paints the Paintable into a UIDL stream. This method creates the UIDL
+     * sequence describing it and outputs it to the given UIDL stream.
+     * </p>
+     * 
+     * <p>
+     * It is called when the contents of the component should be painted in
+     * response to the component first being shown or having been altered so
+     * that its visual representation is changed.
+     * </p>
+     * 
+     * @param target
+     *            the target UIDL stream where the component should paint itself
+     *            to.
+     * @throws PaintException
+     *             if the paint operation failed.
+     */
+    public void paintContent(PaintTarget target) throws PaintException;
+
+}