1 files changed, 80 insertions, 0 deletions
diff --git a/server/src/com/vaadin/terminal/Scrollable.java b/server/src/com/vaadin/terminal/Scrollable.java
new file mode 100644
index 0000000000..472954c556
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+++ b/server/src/com/vaadin/terminal/Scrollable.java
@@ -0,0 +1,80 @@
+/* 
+@VaadinApache2LicenseForJavaFiles@
+ */
+
+package com.vaadin.terminal;
+
+import java.io.Serializable;
+
+/**
+ * <p>
+ * This interface is implemented by all visual objects that can be scrolled
+ * programmatically from the server-side. The unit of scrolling is pixel.
+ * </p>
+ * 
+ * @author Vaadin Ltd.
+ * @version
+ * @VERSION@
+ * @since 3.0
+ */
+public interface Scrollable extends Serializable {
+
+    /**
+     * Gets scroll left offset.
+     * 
+     * <p>
+     * Scrolling offset is the number of pixels this scrollable has been
+     * scrolled right.
+     * </p>
+     * 
+     * @return Horizontal scrolling position in pixels.
+     */
+    public int getScrollLeft();
+
+    /**
+     * Sets scroll left offset.
+     * 
+     * <p>
+     * Scrolling offset is the number of pixels this scrollable has been
+     * scrolled right.
+     * </p>
+     * 
+     * @param scrollLeft
+     *            the xOffset.
+     */
+    public void setScrollLeft(int scrollLeft);
+
+    /**
+     * Gets scroll top offset.
+     * 
+     * <p>
+     * Scrolling offset is the number of pixels this scrollable has been
+     * scrolled down.
+     * </p>
+     * 
+     * @return Vertical scrolling position in pixels.
+     */
+    public int getScrollTop();
+
+    /**
+     * Sets scroll top offset.
+     * 
+     * <p>
+     * Scrolling offset is the number of pixels this scrollable has been
+     * scrolled down.
+     * </p>
+     * 
+     * <p>
+     * The scrolling position is limited by the current height of the content
+     * area. If the position is below the height, it is scrolled to the bottom.
+     * However, if the same response also adds height to the content area,
+     * scrolling to bottom only scrolls to the bottom of the previous content
+     * area.
+     * </p>
+     * 
+     * @param scrollTop
+     *            the yOffset.
+     */
+    public void setScrollTop(int scrollTop);
+
+}