1 | // Module : $RCSfile: AbstractDefaultGUIElementFactory.java,v $ |
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2 | // Version : $Revision: 0.0 $ $Author: patrick $ $Date: 13.05.2012 $ |
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3 | // Project : GUIModel |
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4 | // Creation : 2012 by patrick |
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5 | // Copyright : Patrick Harms, 2012 |
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6 | |
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7 | package de.ugoe.cs.quest.eventcore.guimodel; |
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8 | |
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9 | import java.io.File; |
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10 | import java.io.FileInputStream; |
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11 | import java.io.FileNotFoundException; |
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12 | import java.io.IOException; |
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13 | import java.io.InputStream; |
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14 | import java.lang.reflect.InvocationTargetException; |
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15 | import java.util.Properties; |
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16 | import java.util.logging.Level; |
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17 | import java.util.logging.Logger; |
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18 | |
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19 | import de.ugoe.cs.util.console.Console; |
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20 | |
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21 | /** |
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22 | * TODO comment |
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23 | * |
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24 | * TODO rename class to GUIElementFactory |
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25 | * |
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26 | * @version $Revision: $ $Date: 13.05.2012$ |
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27 | * @author 2012, last modified by $Author: patrick$ |
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28 | */ |
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29 | public class AbstractDefaultGUIElementFactory implements IGUIElementFactory { |
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30 | |
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31 | /** */ |
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32 | private static AbstractDefaultGUIElementFactory instance = new AbstractDefaultGUIElementFactory(); |
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33 | |
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34 | /** |
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35 | * TODO: comment |
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36 | * |
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37 | */ |
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38 | private AbstractDefaultGUIElementFactory() { |
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39 | } |
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40 | |
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41 | /** |
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42 | * TODO: comment |
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43 | * |
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44 | * @return |
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45 | */ |
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46 | public static synchronized AbstractDefaultGUIElementFactory getInstance() { |
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47 | return instance; |
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48 | } |
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49 | |
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50 | |
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51 | /** */ |
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52 | private Properties mappingsFromConfiguration; |
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53 | |
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54 | /** |
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55 | * TODO: comment |
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56 | * |
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57 | * @param object1 |
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58 | * @param object2 |
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59 | * @return |
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60 | */ |
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61 | protected boolean equals(Object object1, Object object2) { |
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62 | if (object1 == object2) { |
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63 | return true; |
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64 | } |
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65 | else if (object1 != null) { |
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66 | return object1.equals(object2); |
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67 | } |
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68 | else { |
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69 | // object 1 is null but object 2 not --> return false |
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70 | return false; |
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71 | } |
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72 | } |
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73 | |
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74 | /** |
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75 | * TODO: comment |
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76 | * |
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77 | * @param parameterTypes |
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78 | * @param parameters |
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79 | * @return |
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80 | * @throws GUIModelConfigurationException |
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81 | */ |
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82 | @Override |
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83 | public IGUIElement instantiateGUIElement(IGUIElementSpec specification) { |
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84 | Properties mappings = getMappingsFromConfiguration(); |
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85 | IGUIElement guiElement = null; |
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86 | |
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87 | String className = mappings.getProperty(specification.getType()); |
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88 | if (className != null) { |
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89 | try { |
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90 | Class<?> clazz = this.getClass().getClassLoader().loadClass(className); |
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91 | |
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92 | if (!IGUIElement.class.isAssignableFrom(clazz)) { |
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93 | Logger.getLogger(this.getClass().getName()).warning |
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94 | ("configured GUI element representing class " + className + |
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95 | " is no valid GUIElement " + "derivate."); |
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96 | |
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97 | return null; |
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98 | } |
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99 | |
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100 | Class<?>[] parameterTypes = new Class<?>[1]; |
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101 | parameterTypes[0] = specification.getClass(); |
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102 | |
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103 | guiElement = |
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104 | (IGUIElement) clazz.getConstructor(parameterTypes).newInstance(specification); |
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105 | |
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106 | return guiElement; |
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107 | } |
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108 | catch (ClassNotFoundException e) { |
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109 | Logger.getLogger(this.getClass().getName()).warning |
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110 | ("configured GUI element representing class " + className + |
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111 | " can not be loaded."); |
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112 | throw new GUIModelConfigurationException |
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113 | ("configured GUI element representing class " + className + |
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114 | " can not be loaded.", e); |
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115 | } |
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116 | catch (SecurityException e) { |
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117 | Logger.getLogger(this.getClass().getName()).log |
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118 | (Level.WARNING, "configured GUI element representing class " + className + |
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119 | " can not be instantiated due to security reasons.", e); |
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120 | throw new GUIModelConfigurationException |
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121 | ("configured GUI element representing class " + className + |
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122 | " can not be instantiated due to security reasons.", e); |
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123 | } |
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124 | catch (NoSuchMethodException e) { |
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125 | Logger.getLogger(this.getClass().getName()).warning |
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126 | ("configured GUI element representing class " + className + |
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127 | " does not provide an appropriate constructur."); |
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128 | throw new GUIModelConfigurationException |
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129 | ("configured GUI element representing class " + className + |
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130 | " does not provide an appropriate constructur.", e); |
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131 | } |
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132 | catch (IllegalArgumentException e) { |
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133 | Logger.getLogger(this.getClass().getName()).warning |
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134 | ("configured GUI element representing class " + className + " does not " + |
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135 | "provide an appropriate constructur accepting the provided parameters."); |
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136 | throw new GUIModelConfigurationException |
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137 | ("configured GUI element representing class " + className + " does not " + |
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138 | "provide an appropriate constructur accepting the provided parameters.", e); |
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139 | } |
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140 | catch (InstantiationException e) { |
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141 | Logger.getLogger(this.getClass().getName()).log |
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142 | (Level.WARNING, "configured GUI element representing class " + className + |
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143 | " can not be instantiated.", e); |
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144 | throw new GUIModelConfigurationException |
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145 | ("configured GUI element representing class " + className + |
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146 | " can not be instantiated.", e); |
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147 | } |
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148 | catch (IllegalAccessException e) { |
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149 | Logger.getLogger(this.getClass().getName()).log |
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150 | (Level.WARNING, "configured GUI element representing class " + className + |
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151 | " can not be instantiated.", e); |
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152 | throw new GUIModelConfigurationException |
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153 | ("configured GUI element representing class " + className + |
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154 | " can not be instantiated.", e); |
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155 | } |
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156 | catch (InvocationTargetException e) { |
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157 | Logger.getLogger(this.getClass().getName()).log |
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158 | (Level.WARNING, "configured GUI element representing class " + className + |
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159 | " can not be instantiated.", e); |
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160 | throw new GUIModelConfigurationException |
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161 | ("configured GUI element representing class " + className + |
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162 | " can not be instantiated.", e); |
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163 | } |
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164 | } |
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165 | if( guiElement==null ) { |
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166 | Console.printerrln("could not find GUI element representing class " + specification.getType()); |
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167 | } |
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168 | |
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169 | return guiElement; |
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170 | } |
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171 | |
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172 | /** |
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173 | * TODO: comment |
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174 | * |
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175 | * @return |
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176 | */ |
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177 | private synchronized Properties getMappingsFromConfiguration() { |
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178 | if (mappingsFromConfiguration != null) { |
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179 | return mappingsFromConfiguration; |
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180 | } |
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181 | else { |
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182 | mappingsFromConfiguration = new Properties(); |
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183 | |
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184 | File mappingsFolder = new File("data/guimappings"); |
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185 | for( File mappingsFile : mappingsFolder.listFiles()) { |
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186 | if(!mappingsFile.isDirectory() && mappingsFile.getName().startsWith("guimapping") && mappingsFile.getName().endsWith(".txt")) { |
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187 | InputStream inStream; |
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188 | try { |
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189 | inStream = new FileInputStream(mappingsFile); |
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190 | mappingsFromConfiguration.load(inStream); |
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191 | } |
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192 | catch (FileNotFoundException e1) { |
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193 | // TODO Auto-generated catch block |
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194 | e1.printStackTrace(); |
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195 | } |
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196 | catch (IOException e) { |
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197 | Logger.getLogger(this.getClass().getName()).warning |
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198 | ("invalid GUI mappings files " + mappingsFile.getName()); |
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199 | } |
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200 | } |
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201 | } |
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202 | |
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203 | return mappingsFromConfiguration; |
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204 | } |
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205 | } |
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206 | } |
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