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1 /* |
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2 * Copyright (c) 2007 Nokia Corporation and/or its subsidiary(-ies). |
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3 * All rights reserved. |
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4 * This component and the accompanying materials are made available |
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5 * under the terms of "Eclipse Public License v1.0" |
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6 * which accompanies this distribution, and is available |
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7 * at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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8 * |
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9 * Initial Contributors: |
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10 * Nokia Corporation - initial contribution. |
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11 * |
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12 * Contributors: |
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13 * |
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14 * Description: This class parses CSS file to DOM document |
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15 * |
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16 */ |
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17 |
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18 |
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19 package com.nokia.tools.themeinstaller.cssparser; |
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20 |
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21 import java.io.File; |
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22 import java.io.FileReader; |
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23 import java.io.IOException; |
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24 import java.io.Reader; |
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25 |
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26 import org.w3c.css.sac.InputSource; |
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27 import org.w3c.css.sac.Parser; |
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28 import org.w3c.css.sac.helpers.ParserFactory; |
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29 import org.w3c.dom.Document; |
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30 |
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31 import com.nokia.tools.themeinstaller.logger.LogWriter; |
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32 import com.nokia.tools.themeinstaller.odtconverter.ParseOperation; |
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33 import com.nokia.tools.themeinstaller.odtconverter.IParseOperationListener; |
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34 import com.nokia.tools.themeinstaller.odtconverter.ODTException; |
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35 |
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36 /** |
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37 * CSSParser parses the CSS File and uses CSSHandler to apply the |
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38 * parsed style rules to DOM Document. |
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39 */ |
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40 public class CSSParser extends ParseOperation implements Runnable |
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41 { |
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42 |
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43 /** The Constant CSS_PARSER_SYSTEM_VALUE. */ |
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44 private static final String CSS_PARSER_SYSTEM_VALUE = "org.w3c.css.sac.parser"; |
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45 |
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46 /** The Constant CSS_PARSER_SYSTEM_KEY. */ |
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47 private static final String CSS_PARSER_SYSTEM_KEY = "org.apache.batik.css.parser.Parser"; |
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48 |
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49 /** CSS file name */ |
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50 private String iFileName; |
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51 |
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52 /** The CSS handler. */ |
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53 private CSSHandler iCSSHandler; |
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54 |
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55 /** The CSS parser. */ |
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56 private Parser iParser; |
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57 |
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58 /** |
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59 * Instantiates a new CSS parser. |
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60 * |
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61 * @param aFileName The CSS file name |
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62 */ |
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63 public CSSParser( String aFileName ) |
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64 { |
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65 iFileName = aFileName; |
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66 ParserFactory factory = new ParserFactory(); |
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67 iCSSHandler = new CSSHandler(); |
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68 |
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69 // Store the value-key pair of the used parser in the System |
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70 // environment(JVM) |
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71 System.setProperty( CSS_PARSER_SYSTEM_VALUE, CSS_PARSER_SYSTEM_KEY ); |
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72 try |
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73 { |
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74 iParser = factory.makeParser(); |
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75 } |
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76 catch ( Exception e ) |
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77 { |
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78 throw new IllegalStateException( "Could not load CSS parser" ); |
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79 } |
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80 } |
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81 |
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82 public void setDocument( Document aDocument ) |
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83 { |
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84 iDOMDocument = aDocument; |
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85 } |
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86 |
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87 /** |
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88 * Run the CSS parse operation. |
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89 */ |
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90 public void run() |
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91 { |
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92 int error = IParseOperationListener.OPERATION_SUCCESSFUL; |
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93 String reason = ""; |
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94 |
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95 try |
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96 { |
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97 iCSSHandler.setDocument( iDOMDocument ); |
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98 |
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99 File mainCSS = new File( iFileName ); |
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100 Reader r = new FileReader( mainCSS ); |
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101 // Tell CSS handler the directory for relative import paths, |
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102 // that is, the path of the Main CSS file |
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103 iCSSHandler.setImportDirectory( mainCSS.getParent() ); |
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104 InputSource is = new InputSource( r ); |
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105 iParser.setDocumentHandler( iCSSHandler ); |
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106 LogWriter.getInstance().logInfo( |
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107 this.getClass().getSimpleName() + ": Parsing CSS " |
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108 + iFileName ); |
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109 iParser.parseStyleSheet( is ); |
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110 iDOMDocument = iCSSHandler.getDocument(); |
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111 } |
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112 catch ( Exception e ) |
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113 { |
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114 reason = e.getMessage(); |
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115 error = IParseOperationListener.CSS_PARSER_ERROR; |
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116 } |
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117 |
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118 super.operationCompleted( error, reason ); |
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119 } |
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120 |
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121 /** |
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122 * Starts CSS parsing in a new thread. |
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123 */ |
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124 public void parse() throws IOException, ODTException |
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125 { |
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126 Thread thread = new Thread( this ); |
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127 thread.start(); |
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128 } |
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129 |
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130 } |