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.IOException; |
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10 | import java.io.InputStream; |
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11 | import java.lang.reflect.InvocationTargetException; |
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12 | import java.util.Properties; |
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13 | import java.util.logging.Level; |
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14 | import java.util.logging.Logger; |
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15 | |
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16 | /** |
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17 | * TODO comment |
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18 | * |
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19 | * @version $Revision: $ $Date: 13.05.2012$ |
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20 | * @author 2012, last modified by $Author: patrick$ |
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21 | */ |
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22 | public abstract class AbstractDefaultGUIElementFactory { |
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23 | |
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24 | /** */ |
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25 | private Properties mMappingsFromConfiguration; |
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26 | |
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27 | /** |
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28 | * TODO: comment |
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29 | * |
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30 | * @param object1 |
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31 | * @param object2 |
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32 | * @return |
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33 | */ |
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34 | protected boolean equals(Object object1, Object object2) { |
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35 | if (object1 == object2) { |
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36 | return true; |
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37 | } |
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38 | else if (object1 != null) { |
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39 | return object1.equals(object2); |
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40 | } |
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41 | else { |
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42 | return object2 == null; |
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43 | } |
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44 | } |
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45 | |
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46 | /** |
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47 | * TODO: comment |
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48 | * |
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49 | * @param parameterTypes |
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50 | * @param parameters |
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51 | * @return |
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52 | * @throws GUIModelConfigurationException |
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53 | */ |
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54 | protected IGUIElement instantiateGUIElementFromConfiguredMappings(String type, |
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55 | Object... parameters) |
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56 | throws GUIModelConfigurationException |
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57 | { |
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58 | Properties mappings = getMappingsFromConfiguration(); |
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59 | |
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60 | String className = mappings.getProperty(type); |
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61 | if (className != null) { |
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62 | try { |
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63 | Class<?> clazz = this.getClass().getClassLoader().loadClass(className); |
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64 | |
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65 | if (!IGUIElement.class.isAssignableFrom(clazz)) { |
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66 | Logger.getLogger(this.getClass().getName()).warning |
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67 | ("configured GUI element representing class " + className + |
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68 | " is no valid GUIElement " + "derivate."); |
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69 | |
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70 | return null; |
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71 | } |
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72 | |
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73 | Class<?>[] parameterTypes = new Class<?>[parameters.length]; |
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74 | |
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75 | for (int i = 0; i < parameters.length; i++) { |
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76 | parameterTypes[i] = parameters[i].getClass(); |
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77 | |
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78 | if (Boolean.class.equals(parameterTypes[i])) { |
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79 | parameterTypes[i] = boolean.class; |
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80 | } |
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81 | else if (Integer.class.equals(parameterTypes[i])) { |
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82 | parameterTypes[i] = int.class; |
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83 | } |
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84 | else if (Double.class.equals(parameterTypes[i])) { |
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85 | parameterTypes[i] = double.class; |
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86 | } |
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87 | else if (Character.class.equals(parameterTypes[i])) { |
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88 | parameterTypes[i] = char.class; |
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89 | } |
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90 | else if (Byte.class.equals(parameterTypes[i])) { |
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91 | parameterTypes[i] = byte.class; |
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92 | } |
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93 | else if (Float.class.equals(parameterTypes[i])) { |
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94 | parameterTypes[i] = float.class; |
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95 | } |
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96 | else if (Long.class.equals(parameterTypes[i])) { |
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97 | parameterTypes[i] = long.class; |
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98 | } |
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99 | else if (Short.class.equals(parameterTypes[i])) { |
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100 | parameterTypes[i] = short.class; |
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101 | } |
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102 | } |
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103 | |
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104 | IGUIElement guiElement = |
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105 | (IGUIElement) clazz.getConstructor(parameterTypes).newInstance(parameters); |
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106 | |
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107 | if (guiElement instanceof AbstractDefaultGUIElement) { |
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108 | ((AbstractDefaultGUIElement) guiElement).setOriginalTypeInfo(type); |
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109 | } |
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110 | |
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111 | return guiElement; |
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112 | } |
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113 | catch (ClassNotFoundException e) { |
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114 | Logger.getLogger(this.getClass().getName()).warning |
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115 | ("configured GUI element representing class " + className + |
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116 | " can not be loaded."); |
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117 | throw new GUIModelConfigurationException |
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118 | ("configured GUI element representing class " + className + |
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119 | " can not be loaded.", e); |
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120 | } |
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121 | catch (SecurityException e) { |
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122 | Logger.getLogger(this.getClass().getName()).log |
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123 | (Level.WARNING, "configured GUI element representing class " + className + |
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124 | " can not be instantiated due to security reasons.", e); |
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125 | throw new GUIModelConfigurationException |
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126 | ("configured GUI element representing class " + className + |
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127 | " can not be instantiated due to security reasons.", e); |
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128 | } |
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129 | catch (NoSuchMethodException e) { |
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130 | Logger.getLogger(this.getClass().getName()).warning |
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131 | ("configured GUI element representing class " + className + |
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132 | " does not provide an appropriate constructur."); |
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133 | throw new GUIModelConfigurationException |
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134 | ("configured GUI element representing class " + className + |
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135 | " does not provide an appropriate constructur.", e); |
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136 | } |
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137 | catch (IllegalArgumentException e) { |
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138 | Logger.getLogger(this.getClass().getName()).warning |
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139 | ("configured GUI element representing class " + className + " does not " + |
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140 | "provide an appropriate constructur accepting the provided parameters."); |
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141 | throw new GUIModelConfigurationException |
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142 | ("configured GUI element representing class " + className + " does not " + |
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143 | "provide an appropriate constructur accepting the provided parameters.", e); |
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144 | } |
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145 | catch (InstantiationException e) { |
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146 | Logger.getLogger(this.getClass().getName()).log |
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147 | (Level.WARNING, "configured GUI element representing class " + className + |
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148 | " can not be instantiated.", e); |
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149 | throw new GUIModelConfigurationException |
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150 | ("configured GUI element representing class " + className + |
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151 | " can not be instantiated.", e); |
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152 | } |
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153 | catch (IllegalAccessException e) { |
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154 | Logger.getLogger(this.getClass().getName()).log |
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155 | (Level.WARNING, "configured GUI element representing class " + className + |
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156 | " can not be instantiated.", e); |
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157 | throw new GUIModelConfigurationException |
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158 | ("configured GUI element representing class " + className + |
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159 | " can not be instantiated.", e); |
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160 | } |
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161 | catch (InvocationTargetException e) { |
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162 | Logger.getLogger(this.getClass().getName()).log |
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163 | (Level.WARNING, "configured GUI element representing class " + className + |
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164 | " can not be instantiated.", e); |
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165 | throw new GUIModelConfigurationException |
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166 | ("configured GUI element representing class " + className + |
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167 | " can not be instantiated.", e); |
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168 | } |
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169 | } |
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170 | |
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171 | return null; |
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172 | } |
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173 | |
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174 | /** |
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175 | * TODO: comment |
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176 | * |
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177 | * @return |
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178 | */ |
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179 | private synchronized Properties getMappingsFromConfiguration() { |
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180 | if (mMappingsFromConfiguration != null) { |
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181 | return mMappingsFromConfiguration; |
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182 | } |
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183 | else { |
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184 | mMappingsFromConfiguration = new Properties(); |
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185 | |
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186 | InputStream inStream = |
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187 | this.getClass().getClassLoader().getResourceAsStream("GUIElementMapping.txt"); |
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188 | |
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189 | if (inStream != null) { |
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190 | try { |
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191 | mMappingsFromConfiguration.load(inStream); |
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192 | } |
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193 | catch (IOException e) { |
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194 | Logger.getLogger(this.getClass().getName()).warning |
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195 | ("could not load GUIElementMapping.txt from classpath, but this may be " + |
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196 | "intended"); |
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197 | } |
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198 | } |
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199 | |
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200 | return mMappingsFromConfiguration; |
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201 | } |
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202 | } |
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203 | } |
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