--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/uidesigner/com.nokia.sdt.uimodel/src/com/nokia/sdt/component/property/ISequencePropertySource.java	Fri Apr 03 23:33:03 2009 +0100
@@ -0,0 +1,98 @@
+/*
+* Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).
+* All rights reserved.
+* This component and the accompanying materials are made available
+* under the terms of the License "Eclipse Public License v1.0"
+* which accompanies this distribution, and is available
+* at the URL "http://www.eclipse.org/legal/epl-v10.html".
+*
+* Initial Contributors:
+* Nokia Corporation - initial contribution.
+*
+* Contributors:
+*
+* Description: 
+*
+*/
+package com.nokia.sdt.component.property;
+
+import org.eclipse.ui.views.properties.IPropertySource;
+
+import java.util.Iterator;
+import java.util.List;
+
+/**
+ * Extension of IPropertySource to support sequence properties
+ */
+public interface ISequencePropertySource extends IPropertySource{
+
+	public static final int AT_END = Integer.MAX_VALUE;
+	
+	/**
+	 * @return the number of items in the sequence
+	 */
+	int size();
+	
+	/**
+	 * Returns the given item in the sequence
+	 */
+	Object get(int index);
+	
+	/**
+	 * Return a list containing all the current items.
+	 * The list does not reflect subsequent additions or removals.
+	 */
+	List toList();
+	
+	/**
+	 * Move the item at a given index to a new index
+	 */
+	void move(int index, int newIndex);
+	
+	/**
+	 * Removes the given item
+	 */
+	void remove(int index);
+	
+	/**
+	 * Removes all items
+	 */
+	void clear();
+	
+	/**
+	 * Return true if elements are compound properties
+	 */
+	boolean isCompoundElement();
+
+	/**
+	 * Returns an non-modifying iterator over the sequence
+	 */
+	Iterator iterator();
+	
+	/**
+	 * Adds a new simple property at the given index. The value
+	 * cannot be an IPropertySource
+	 * @param index location to insert the value
+	 * @param the new value, or null to use the default value
+	 * @throws IllegalArgumentException if value is an IPropertySource or
+	 * the value does not match the element type, e.g. if the elements are
+	 * compound properties.
+	 */
+	int addSimpleProperty(int index, Object value);
+	
+    /**
+     * Adds a new compound property for a sequence and inserts it
+     * at the given position.
+     * @throws IllegalStateException if the element type is not
+     * a compound property
+     */
+    IPropertySource addCompoundProperty(int index);
+    
+    /**
+     * Returns a property path for the given element
+     * @param index
+     * @return
+     */
+    String getElementPath(int index);
+    
+}