diff -r 000000000000 -r 522a326673b6 sysmodelmgr/com.symbian.smt.gui/src/com/symbian/smt/gui/smtwidgets/SystemDefinitionFileSelectionValidator.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/sysmodelmgr/com.symbian.smt.gui/src/com/symbian/smt/gui/smtwidgets/SystemDefinitionFileSelectionValidator.java	Thu Mar 11 19:08:43 2010 +0200
@@ -0,0 +1,246 @@
+// Copyright (c) 2008-2009 Nokia Corporation and/or its subsidiary(-ies).
+// All rights reserved.
+// This component and the accompanying materials are made available
+// under the terms of "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:
+// ${file_name}
+// 
+//
+
+package com.symbian.smt.gui.smtwidgets;
+
+import java.io.File;
+import java.io.IOException;
+import java.io.InputStream;
+import java.net.MalformedURLException;
+import java.net.URL;
+import java.net.URLConnection;
+import java.util.List;
+
+import javax.xml.parsers.DocumentBuilder;
+import javax.xml.parsers.DocumentBuilderFactory;
+import javax.xml.parsers.ParserConfigurationException;
+
+import org.w3c.dom.Document;
+import org.xml.sax.ErrorHandler;
+import org.xml.sax.SAXException;
+import org.xml.sax.SAXParseException;
+
+import com.symbian.smt.gui.Logger;
+import com.symbian.smt.gui.XmlFileValidator;
+
+/**
+ * @author barbararosi-schwartz
+ * 
+ */
+public class SystemDefinitionFileSelectionValidator extends
+		XmlFileValidator implements IXmlFileInputValidator {
+
+	private List<String> sysdefFilenames;
+	private InputStream urlInputStream;
+
+	public SystemDefinitionFileSelectionValidator(List<String> filenames) {
+		super();
+		
+		this.sysdefFilenames = filenames;
+	}
+
+	private void closeInputStream() {
+		if (urlInputStream != null) {
+			try {
+				urlInputStream.close();
+			} catch (IOException ignore) {
+				Logger.log(ignore.getMessage(), ignore);
+			}
+			urlInputStream = null;
+		}
+	}
+
+	protected Document createDocument(final String filePath)
+			throws ParserConfigurationException, SAXException, IOException {
+		DocumentBuilderFactory domFactory = DocumentBuilderFactory
+				.newInstance();
+		domFactory.setNamespaceAware(true);
+		domFactory.setValidating(false);
+
+		DocumentBuilder builder = domFactory.newDocumentBuilder();
+
+		ErrorHandler errorHandler = new ErrorHandler() {
+			public void error(SAXParseException exception)
+					throws SAXParseException {
+				throw exception;
+			}
+
+			public void fatalError(SAXParseException exception)
+					throws SAXParseException {
+				throw exception;
+			}
+
+			public void warning(SAXParseException exception)
+					throws SAXParseException {
+				throw exception;
+			}
+		};
+
+		builder.setErrorHandler(errorHandler);
+		Document doc = null;
+
+		try {
+			if (isUrl(filePath)) {
+				if (urlInputStream != null) {
+					doc = builder.parse(urlInputStream);
+					closeInputStream();
+				}
+			} else {
+				doc = builder.parse(filePath);
+			}
+		} catch (InvalidPathException e) {
+			// This cannot happen as it has already been checked while the user
+			// was typing in
+		}
+
+		return doc;
+	}
+
+	private String isFilePathValid(String filePath) {
+		return isFileReadable(filePath);
+	}
+
+	/* (non-Javadoc)
+	 * @see com.symbian.smt.gui.smtwidgets.IFileInputValidator#isFileReadable(java.lang.String)
+	 */
+	public String isFileReadable(String filePath) {
+		String errorMessage = null;
+		File inFile = new File(filePath);
+
+		if (!inFile.canRead()) {
+			return "Selected file cannot be read.";
+		}
+
+		return errorMessage;
+	}
+
+	/* (non-Javadoc)
+	 * @see com.symbian.smt.gui.smtwidgets.IFileInputValidator#isUrl(java.lang.String)
+	 */
+	public boolean isUrl(String filePath) throws InvalidPathException {
+		int index = filePath.indexOf(':');
+
+		if (index == -1 || index == 1) {
+			return false;
+		} else if (index > 1) {
+			return true;
+		} else {
+			throw new InvalidPathException("Unexpected file path format.");
+		}
+	}
+
+	/* (non-Javadoc)
+	 * @see com.symbian.smt.gui.smtwidgets.IFileInputValidator#isUrlResourceReadable(java.lang.String)
+	 */
+	public String isUrlResourceReadable(String filePath) {
+		String errorMessage = null;
+
+		try {
+			URL fileURL = new URL(filePath.trim());
+			URLConnection connection = fileURL.openConnection();
+			String contentType = connection.getContentType();
+
+			if (contentType == null) {
+				return "System definition resource at specified URL cannot be read.";
+			}
+			
+			if (!contentType.endsWith("xml")) {
+				return "Specified URL is not an XML document.";
+			}
+
+			urlInputStream = connection.getInputStream();
+
+			if (urlInputStream == null) {
+				errorMessage = "System definition resource at specified URL cannot be read.";
+			}
+		} catch (IllegalArgumentException e) {
+			closeInputStream();
+			errorMessage = "System definition resource at specified URL cannot be read.";
+		} catch (MalformedURLException e) {
+			closeInputStream();
+			errorMessage = "Specified URL is not a valid URL.";
+		} catch (IOException e) {
+			closeInputStream();
+			errorMessage = "System definition resource at specified URL cannot be reached.";
+		}
+
+		return errorMessage;
+	}
+
+	private String isUrlValid(String url) {
+		String errorMessage = null;
+
+		try {
+			URL inputUrl = new URL(url);
+			inputUrl.openConnection();
+		} catch (MalformedURLException e) {
+			closeInputStream();
+			errorMessage = "Specified URL is not a valid URL.";
+		} catch (IOException e) {
+			closeInputStream();
+			errorMessage = "Resource at specified URL cannot be reached.";
+		}
+
+		return errorMessage;
+	}
+
+	/*
+	 * @see org.eclipse.jface.dialogs.IInputValidator#isValid(java.lang.String)
+	 */
+	public String isValid(String filePath) {
+		if (filePath == null || filePath.length() == 0) {
+			return "";
+		} else {
+			return validateResourceWhileUserTypes(filePath);
+		}
+	}
+
+	/* (non-Javadoc)
+	 * @see com.symbian.smt.gui.smtwidgets.IXmlFileInputValidator#isXmlValid(java.lang.String)
+	 */
+	public String isXmlValid(String filePath) {
+		return validateXml(filePath);
+	}
+
+	private String validateResourceWhileUserTypes(String filePath) {
+		String errorMessage = null;
+
+		// First check path is not UNC
+		if (filePath.startsWith(File.separator)) {
+			return "UNC paths are not compatible with the System Model Manager";
+		}
+
+		// Then check that filename (path) is not duplicate
+		// by checking name against table
+		if ((sysdefFilenames != null) && (sysdefFilenames.contains(filePath))) {
+			return "The selected file has already been assigned.";
+		}
+
+		// Then check that path is appropriate
+		try {
+			if (isUrl(filePath)) {
+				errorMessage = isUrlValid(filePath);
+			} else {
+				errorMessage = isFilePathValid(filePath);
+			}
+		} catch (InvalidPathException e) {
+			errorMessage = e.getMessage();
+		}
+
+		return errorMessage;
+	}
+}