1 files changed, 33 insertions, 0 deletions
diff --git a/bundles/org.eclipse.compare/compare/org/eclipse/compare/structuremergeviewer/ICompareInputChangeListener.java b/bundles/org.eclipse.compare/compare/org/eclipse/compare/structuremergeviewer/ICompareInputChangeListener.java
new file mode 100644
index 000000000..e182ad749
--- /dev/null
+++ b/bundles/org.eclipse.compare/compare/org/eclipse/compare/structuremergeviewer/ICompareInputChangeListener.java
@@ -0,0 +1,33 @@
+/*
+ * Licensed Materials - Property of IBM,
+ * WebSphere Studio Workbench
+ * (c) Copyright IBM Corp 2001
+ */
+package org.eclipse.compare.structuremergeviewer;
+
+/**
+ * Listener that gets informed if one (or more)
+ * of the three sides of an <code>ICompareInput</code> object changes its value.
+ * <p>
+ * For example when accepting an incoming addition
+ * the (non-null) left side of an <code>ICompareInput</code>
+ * is copied to the right side (which was <code>null</code>).
+ * This triggers a call to <code>compareInputChanged</code> of registered
+ * <code>ICompareInputChangeListener</code>. 
+ * <p>
+ * Note however, that listener are not informed if the content of one of the sides changes.
+ * <p>
+ * Clients may implement this interface. It is also implemented by viewers that take 
+ * an <code>ICompareInput</code> as input.
+ * </p>
+ */
+public interface ICompareInputChangeListener {
+	
+	/**
+	 * Called whenever the value (not the content) of one or more of the three sides 
+ 	 * of a <code>ICompareInput</code> has changed.
+	 *
+	 * @param source the <code>ICompareInput</code> that has changed
+	 */
+	void compareInputChanged(ICompareInput source);
+}