--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/uidesigner/com.nokia.sdt.uimodel/src/com/nokia/sdt/datamodel/IDesignerDataModelProvider.java	Fri Apr 03 23:33:03 2009 +0100
@@ -0,0 +1,71 @@
+/*
+* 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.datamodel;
+
+import com.nokia.sdt.sourcegen.ISourceGenProvider;
+import com.nokia.sdt.workspace.IDesignerDataModelSpecifier;
+
+import org.eclipse.core.runtime.CoreException;
+import org.eclipse.emf.common.util.URI;
+
+	/**
+	 * Factory interface for loading a data model from
+	 * a file.
+	 * Used as part of the modelLoader extension point
+	 * exposed by the UI designer for loading the
+	 * data model.
+	 */
+public interface IDesignerDataModelProvider {
+	
+	/**
+	 * Create a new data model to be saved at the
+	 * given file.
+	 * @param fileURI desired file path.  Any existing file is overwritten
+	 * @param encoding optional file encoding, can be null for UTF-8
+	 */
+	IDesignerDataModel create(URI fileURI, String encoding) throws Exception;
+
+	/**
+	 * Load a previously saved data model from the URI.
+	 * <p>
+	 * If a sourcegen provider is given, create a
+	 * sourcegen session and load source state necessary.
+	 * <p>
+	 * It may be useful to pass null for the provider for
+	 * a short-term, read-only view of the model ignoring
+	 * any pending two-way user changes.
+	 * @param fileURI
+	 * @param specifier data model specifier or null
+	 * @param provider sourcegen provider or null
+	 */
+	LoadResult load(URI fileURI, IDesignerDataModelSpecifier specifier, ISourceGenProvider provider);
+	
+	/**
+	 * Creates a temporary data model. The returned model
+	 * will not yet have a component set.
+	 */
+	IDesignerDataModel createTemporary();
+	
+	/**
+	 * Creates a temporary data model compatible with the given
+	 * model. The returned model will have an equivalent component
+	 * set and can therefore be used to hold copies of objects
+	 * from the source model.
+	 * @throws CoreException 
+	 */
+	IDesignerDataModel createCompatibleTemporary(IDesignerDataModel sourceModel) throws CoreException;
+}