sysmodelmgr/com.symbian.smt.gui/src/com/symbian/smt/gui/smtwidgets/SystemDefinitionFileSelectionValidator.java
Moved swconfigapps content under oss repository.
// 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;
}
}