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1 // Copyright (c) 2008-2009 Nokia Corporation and/or its subsidiary(-ies). |
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2 // All rights reserved. |
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3 // This component and the accompanying materials are made available |
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4 // under the terms of "Eclipse Public License v1.0" |
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5 // which accompanies this distribution, and is available |
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6 // at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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7 // |
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8 // Initial Contributors: |
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9 // Nokia Corporation - initial contribution. |
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10 // |
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11 // Contributors: |
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12 // |
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13 // Description: |
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14 // ${file_name} |
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15 // |
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16 // |
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17 |
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18 package com.symbian.smt.gui.smtwidgets; |
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19 |
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20 import java.io.File; |
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21 import java.io.IOException; |
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22 import java.io.InputStream; |
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23 import java.net.MalformedURLException; |
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24 import java.net.URL; |
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25 import java.net.URLConnection; |
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26 import java.util.List; |
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27 |
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28 import javax.xml.parsers.DocumentBuilder; |
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29 import javax.xml.parsers.DocumentBuilderFactory; |
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30 import javax.xml.parsers.ParserConfigurationException; |
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31 |
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32 import org.w3c.dom.Document; |
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33 import org.xml.sax.ErrorHandler; |
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34 import org.xml.sax.SAXException; |
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35 import org.xml.sax.SAXParseException; |
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36 |
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37 import com.symbian.smt.gui.Logger; |
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38 import com.symbian.smt.gui.XmlFileValidator; |
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39 |
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40 /** |
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41 * @author barbararosi-schwartz |
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42 * |
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43 */ |
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44 public class SystemDefinitionFileSelectionValidator extends |
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45 XmlFileValidator implements IXmlFileInputValidator { |
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46 |
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47 private List<String> sysdefFilenames; |
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48 private InputStream urlInputStream; |
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49 |
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50 public SystemDefinitionFileSelectionValidator(List<String> filenames) { |
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51 super(); |
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52 |
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53 this.sysdefFilenames = filenames; |
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54 } |
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55 |
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56 private void closeInputStream() { |
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57 if (urlInputStream != null) { |
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58 try { |
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59 urlInputStream.close(); |
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60 } catch (IOException ignore) { |
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61 Logger.log(ignore.getMessage(), ignore); |
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62 } |
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63 urlInputStream = null; |
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64 } |
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65 } |
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66 |
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67 protected Document createDocument(final String filePath) |
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68 throws ParserConfigurationException, SAXException, IOException { |
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69 DocumentBuilderFactory domFactory = DocumentBuilderFactory |
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70 .newInstance(); |
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71 domFactory.setNamespaceAware(true); |
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72 domFactory.setValidating(false); |
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73 |
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74 DocumentBuilder builder = domFactory.newDocumentBuilder(); |
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75 |
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76 ErrorHandler errorHandler = new ErrorHandler() { |
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77 public void error(SAXParseException exception) |
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78 throws SAXParseException { |
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79 throw exception; |
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80 } |
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81 |
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82 public void fatalError(SAXParseException exception) |
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83 throws SAXParseException { |
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84 throw exception; |
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85 } |
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86 |
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87 public void warning(SAXParseException exception) |
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88 throws SAXParseException { |
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89 throw exception; |
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90 } |
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91 }; |
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92 |
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93 builder.setErrorHandler(errorHandler); |
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94 Document doc = null; |
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95 |
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96 try { |
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97 if (isUrl(filePath)) { |
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98 if (urlInputStream != null) { |
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99 doc = builder.parse(urlInputStream); |
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100 closeInputStream(); |
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101 } |
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102 } else { |
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103 doc = builder.parse(filePath); |
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104 } |
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105 } catch (InvalidPathException e) { |
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106 // This cannot happen as it has already been checked while the user |
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107 // was typing in |
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108 } |
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109 |
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110 return doc; |
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111 } |
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112 |
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113 private String isFilePathValid(String filePath) { |
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114 return isFileReadable(filePath); |
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115 } |
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116 |
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117 /* (non-Javadoc) |
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118 * @see com.symbian.smt.gui.smtwidgets.IFileInputValidator#isFileReadable(java.lang.String) |
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119 */ |
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120 public String isFileReadable(String filePath) { |
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121 String errorMessage = null; |
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122 File inFile = new File(filePath); |
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123 |
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124 if (!inFile.canRead()) { |
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125 return "Selected file cannot be read."; |
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126 } |
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127 |
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128 return errorMessage; |
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129 } |
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130 |
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131 /* (non-Javadoc) |
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132 * @see com.symbian.smt.gui.smtwidgets.IFileInputValidator#isUrl(java.lang.String) |
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133 */ |
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134 public boolean isUrl(String filePath) throws InvalidPathException { |
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135 int index = filePath.indexOf(':'); |
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136 |
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137 if (index == -1 || index == 1) { |
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138 return false; |
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139 } else if (index > 1) { |
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140 return true; |
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141 } else { |
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142 throw new InvalidPathException("Unexpected file path format."); |
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143 } |
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144 } |
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145 |
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146 /* (non-Javadoc) |
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147 * @see com.symbian.smt.gui.smtwidgets.IFileInputValidator#isUrlResourceReadable(java.lang.String) |
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148 */ |
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149 public String isUrlResourceReadable(String filePath) { |
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150 String errorMessage = null; |
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151 |
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152 try { |
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153 URL fileURL = new URL(filePath.trim()); |
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154 URLConnection connection = fileURL.openConnection(); |
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155 String contentType = connection.getContentType(); |
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156 |
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157 if (contentType == null) { |
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158 return "System definition resource at specified URL cannot be read."; |
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159 } |
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160 |
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161 if (!contentType.endsWith("xml")) { |
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162 return "Specified URL is not an XML document."; |
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163 } |
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164 |
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165 urlInputStream = connection.getInputStream(); |
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166 |
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167 if (urlInputStream == null) { |
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168 errorMessage = "System definition resource at specified URL cannot be read."; |
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169 } |
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170 } catch (IllegalArgumentException e) { |
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171 closeInputStream(); |
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172 errorMessage = "System definition resource at specified URL cannot be read."; |
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173 } catch (MalformedURLException e) { |
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174 closeInputStream(); |
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175 errorMessage = "Specified URL is not a valid URL."; |
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176 } catch (IOException e) { |
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177 closeInputStream(); |
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178 errorMessage = "System definition resource at specified URL cannot be reached."; |
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179 } |
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180 |
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181 return errorMessage; |
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182 } |
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183 |
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184 private String isUrlValid(String url) { |
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185 String errorMessage = null; |
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186 |
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187 try { |
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188 URL inputUrl = new URL(url); |
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189 inputUrl.openConnection(); |
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190 } catch (MalformedURLException e) { |
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191 closeInputStream(); |
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192 errorMessage = "Specified URL is not a valid URL."; |
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193 } catch (IOException e) { |
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194 closeInputStream(); |
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195 errorMessage = "Resource at specified URL cannot be reached."; |
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196 } |
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197 |
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198 return errorMessage; |
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199 } |
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200 |
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201 /* |
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202 * @see org.eclipse.jface.dialogs.IInputValidator#isValid(java.lang.String) |
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203 */ |
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204 public String isValid(String filePath) { |
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205 if (filePath == null || filePath.length() == 0) { |
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206 return ""; |
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207 } else { |
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208 return validateResourceWhileUserTypes(filePath); |
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209 } |
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210 } |
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211 |
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212 /* (non-Javadoc) |
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213 * @see com.symbian.smt.gui.smtwidgets.IXmlFileInputValidator#isXmlValid(java.lang.String) |
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214 */ |
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215 public String isXmlValid(String filePath) { |
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216 return validateXml(filePath); |
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217 } |
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218 |
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219 private String validateResourceWhileUserTypes(String filePath) { |
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220 String errorMessage = null; |
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221 |
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222 // First check path is not UNC |
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223 if (filePath.startsWith(File.separator)) { |
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224 return "UNC paths are not compatible with the System Model Manager"; |
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225 } |
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226 |
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227 // Then check that filename (path) is not duplicate |
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228 // by checking name against table |
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229 if ((sysdefFilenames != null) && (sysdefFilenames.contains(filePath))) { |
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230 return "The selected file has already been assigned."; |
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231 } |
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232 |
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233 // Then check that path is appropriate |
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234 try { |
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235 if (isUrl(filePath)) { |
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236 errorMessage = isUrlValid(filePath); |
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237 } else { |
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238 errorMessage = isFilePathValid(filePath); |
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239 } |
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240 } catch (InvalidPathException e) { |
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241 errorMessage = e.getMessage(); |
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242 } |
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243 |
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244 return errorMessage; |
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245 } |
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246 } |