[545] | 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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[585] | 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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[545] | 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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[585] | 19 | import de.ugoe.cs.util.console.Console; |
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| 20 | |
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[545] | 21 | /** |
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| 22 | * TODO comment |
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| 23 | * |
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[585] | 24 | * TODO rename class to GUIElementFactory |
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| 25 | * |
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[545] | 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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[592] | 29 | public class GUIElementFactory implements IGUIElementFactory { |
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[545] | 30 | |
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| 31 | /** */ |
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[592] | 32 | private static GUIElementFactory instance = new GUIElementFactory(); |
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[585] | 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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[592] | 38 | private GUIElementFactory() { |
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[585] | 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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[592] | 46 | public static synchronized GUIElementFactory getInstance() { |
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[585] | 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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[550] | 52 | private Properties mappingsFromConfiguration; |
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[545] | 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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[564] | 69 | // object 1 is null but object 2 not --> return false |
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| 70 | return false; |
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[545] | 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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[585] | 82 | @Override |
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[603] | 83 | public IGUIElement instantiateGUIElement(IGUIElementSpec specification, IGUIElement parent) |
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[592] | 84 | throws GUIModelConfigurationException |
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| 85 | { |
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[545] | 86 | Properties mappings = getMappingsFromConfiguration(); |
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[585] | 87 | IGUIElement guiElement = null; |
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[545] | 88 | |
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[576] | 89 | String className = mappings.getProperty(specification.getType()); |
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[545] | 90 | if (className != null) { |
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| 91 | try { |
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| 92 | Class<?> clazz = this.getClass().getClassLoader().loadClass(className); |
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| 93 | |
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| 94 | if (!IGUIElement.class.isAssignableFrom(clazz)) { |
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| 95 | Logger.getLogger(this.getClass().getName()).warning |
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| 96 | ("configured GUI element representing class " + className + |
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| 97 | " is no valid GUIElement " + "derivate."); |
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| 98 | |
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| 99 | return null; |
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| 100 | } |
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| 101 | |
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[603] | 102 | Class<?>[] parameterTypes = new Class<?>[2]; |
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[576] | 103 | parameterTypes[0] = specification.getClass(); |
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[603] | 104 | parameterTypes[1] = parent.getClass(); |
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[545] | 105 | |
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[603] | 106 | guiElement = (IGUIElement) clazz.getConstructor(parameterTypes).newInstance |
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| 107 | (specification, parent); |
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[545] | 108 | |
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| 109 | return guiElement; |
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| 110 | } |
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| 111 | catch (ClassNotFoundException e) { |
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| 112 | Logger.getLogger(this.getClass().getName()).warning |
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| 113 | ("configured GUI element representing class " + className + |
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| 114 | " can not be loaded."); |
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| 115 | throw new GUIModelConfigurationException |
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| 116 | ("configured GUI element representing class " + className + |
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| 117 | " can not be loaded.", e); |
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| 118 | } |
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| 119 | catch (SecurityException e) { |
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| 120 | Logger.getLogger(this.getClass().getName()).log |
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| 121 | (Level.WARNING, "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 | throw new GUIModelConfigurationException |
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| 124 | ("configured GUI element representing class " + className + |
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| 125 | " can not be instantiated due to security reasons.", e); |
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| 126 | } |
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| 127 | catch (NoSuchMethodException e) { |
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| 128 | Logger.getLogger(this.getClass().getName()).warning |
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| 129 | ("configured GUI element representing class " + className + |
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| 130 | " does not provide an appropriate constructur."); |
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| 131 | throw new GUIModelConfigurationException |
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| 132 | ("configured GUI element representing class " + className + |
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| 133 | " does not provide an appropriate constructur.", e); |
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| 134 | } |
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| 135 | catch (IllegalArgumentException e) { |
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| 136 | Logger.getLogger(this.getClass().getName()).warning |
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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."); |
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| 139 | throw new GUIModelConfigurationException |
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| 140 | ("configured GUI element representing class " + className + " does not " + |
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| 141 | "provide an appropriate constructur accepting the provided parameters.", e); |
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| 142 | } |
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| 143 | catch (InstantiationException e) { |
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| 144 | Logger.getLogger(this.getClass().getName()).log |
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| 145 | (Level.WARNING, "configured GUI element representing class " + className + |
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| 146 | " can not be instantiated.", e); |
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| 147 | throw new GUIModelConfigurationException |
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| 148 | ("configured GUI element representing class " + className + |
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| 149 | " can not be instantiated.", e); |
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| 150 | } |
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| 151 | catch (IllegalAccessException e) { |
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| 152 | Logger.getLogger(this.getClass().getName()).log |
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| 153 | (Level.WARNING, "configured GUI element representing class " + className + |
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| 154 | " can not be instantiated.", e); |
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| 155 | throw new GUIModelConfigurationException |
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| 156 | ("configured GUI element representing class " + className + |
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| 157 | " can not be instantiated.", e); |
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| 158 | } |
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| 159 | catch (InvocationTargetException e) { |
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| 160 | Logger.getLogger(this.getClass().getName()).log |
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| 161 | (Level.WARNING, "configured GUI element representing class " + className + |
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| 162 | " can not be instantiated.", e); |
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| 163 | throw new GUIModelConfigurationException |
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| 164 | ("configured GUI element representing class " + className + |
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| 165 | " can not be instantiated.", e); |
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| 166 | } |
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| 167 | } |
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[585] | 168 | if( guiElement==null ) { |
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| 169 | Console.printerrln("could not find GUI element representing class " + specification.getType()); |
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| 170 | } |
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[545] | 171 | |
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[585] | 172 | return guiElement; |
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[545] | 173 | } |
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| 174 | |
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| 175 | /** |
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| 176 | * TODO: comment |
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| 177 | * |
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| 178 | * @return |
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| 179 | */ |
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[603] | 180 | private synchronized Properties getMappingsFromConfiguration() |
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| 181 | throws GUIModelConfigurationException |
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| 182 | { |
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[550] | 183 | if (mappingsFromConfiguration != null) { |
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| 184 | return mappingsFromConfiguration; |
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[545] | 185 | } |
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| 186 | else { |
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[550] | 187 | mappingsFromConfiguration = new Properties(); |
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[585] | 188 | |
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| 189 | File mappingsFolder = new File("data/guimappings"); |
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[603] | 190 | File[] children = mappingsFolder.listFiles(); |
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| 191 | |
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| 192 | if (children != null) { |
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| 193 | for (File mappingsFile : children) { |
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| 194 | if (!mappingsFile.isDirectory() && |
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| 195 | mappingsFile.getName().startsWith("guimapping") && |
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| 196 | mappingsFile.getName().endsWith(".txt")) |
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| 197 | { |
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| 198 | InputStream inStream; |
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| 199 | try { |
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| 200 | inStream = new FileInputStream(mappingsFile); |
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| 201 | mappingsFromConfiguration.load(inStream); |
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| 202 | inStream.close(); |
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| 203 | } |
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| 204 | catch (FileNotFoundException e) { |
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| 205 | throw new GUIModelConfigurationException |
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| 206 | ("could not read mapping configuration file " + mappingsFile, e); |
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| 207 | } |
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| 208 | catch (IOException e) { |
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| 209 | throw new GUIModelConfigurationException |
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| 210 | ("could not read mapping configuration file " + mappingsFile, e); |
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| 211 | } |
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[585] | 212 | } |
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[545] | 213 | } |
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| 214 | } |
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[603] | 215 | else { |
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| 216 | throw new GUIModelConfigurationException |
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| 217 | ("no GUI mappings file provided in folder " + mappingsFolder); |
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| 218 | } |
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[545] | 219 | |
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[550] | 220 | return mappingsFromConfiguration; |
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[545] | 221 | } |
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| 222 | } |
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| 223 | } |
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