1 | /**
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2 | * Actions.java
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3 | * Copyright (C) 2010 New Zealand Digital Library, http://expeditee.org
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4 | *
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5 | * This program is free software: you can redistribute it and/or modify
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6 | * it under the terms of the GNU General Public License as published by
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7 | * the Free Software Foundation, either version 3 of the License, or
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8 | * (at your option) any later version.
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9 | *
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10 | * This program is distributed in the hope that it will be useful,
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11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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13 | * GNU General Public License for more details.
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14 | *
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15 | * You should have received a copy of the GNU General Public License
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16 | * along with this program. If not, see <http://www.gnu.org/licenses/>.
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17 | */
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18 |
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19 | package org.expeditee.actions;
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20 |
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21 | import java.lang.reflect.Constructor;
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22 | import java.lang.reflect.Method;
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23 | import java.lang.reflect.Modifier;
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24 | import java.rmi.UnexpectedException;
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25 | import java.util.ArrayList;
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26 | import java.util.Collection;
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27 | import java.util.Comparator;
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28 | import java.util.HashMap;
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29 | import java.util.LinkedList;
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30 | import java.util.List;
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31 | import java.util.Set;
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32 |
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33 | import org.expeditee.agents.Agent;
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34 | import org.expeditee.gio.EcosystemManager;
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35 | import org.expeditee.gui.DisplayController;
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36 | import org.expeditee.gui.Frame;
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37 | import org.expeditee.gui.FrameIO;
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38 | import org.expeditee.gui.FrameUtils;
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39 | import org.expeditee.gui.FreeItems;
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40 | import org.expeditee.gui.MessageBay;
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41 | import org.expeditee.io.Conversion;
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42 | import org.expeditee.items.Item;
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43 | import org.expeditee.items.ItemUtils;
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44 | import org.expeditee.items.Text;
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45 | import org.expeditee.reflection.PackageLoader;
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46 | import org.expeditee.simple.SString;
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47 | import org.expeditee.stats.Logger;
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48 |
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49 | /**
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50 | * The Action class is used to launch Actions and Agents.
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51 | *
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52 | * This class checks all class files in the same directory, and reads in and
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53 | * adds all the methods from them. The methods are stored in a Hashtable so that
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54 | * the lowercase method names can be mapped to the correctly capatilized method
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55 | * names (to provide case-insensitivity)
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56 | *
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57 | * When adding an action to a class in the actions folder the following must be
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58 | * considered: <li>If the first parameter is of type Frame, the current frame
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59 | * will be passed as a parameter. <li>If the next param is of type Item the item
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60 | * on the end of the cursor will be passed or the item that was clicked to
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61 | * execute the action if nothing is on the end of the cursor. current frame or
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62 | * item.</li> <li>If there are multiple overloads for the same method they
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63 | * should be declared in order of the methods with the most parameteres to least
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64 | * parameters.</li>
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65 | */
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66 | public class Actions {
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67 |
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68 | private static final String INVALID_PARAMETERS_ERROR = "Invalid parameters for agent: "; //$NON-NLS-1$
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69 |
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70 | // the currently running agent (if there is one)
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71 | private static Agent _Agent = null;
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72 |
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73 | // maps lower case method names to the method
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74 | private static HashMap<String, Method> _Actions = new HashMap<String, Method>();
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75 |
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76 | // map lower case fonts to capitalized fonts
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77 | private static HashMap<String, String> _Fonts = new HashMap<String, String>();
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78 |
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79 | // maps lower case JAG class names to capitalized JAG full class names
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80 | private static HashMap<String, String> _JAGs = new HashMap<String, String>();
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81 |
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82 | // maps lower case IW class names to capitalized IW names
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83 | private static HashMap<String, String> _IWs = new HashMap<String, String>();
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84 |
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85 | public static final String ROOT_PACKAGE = "org.expeditee.";
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86 |
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87 | // Package and class file locations
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88 | public static final String ACTIONS_PACKAGE = ROOT_PACKAGE + "actions.";
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89 |
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90 | public static final String AGENTS_PACKAGE = ROOT_PACKAGE + "agents.";
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91 |
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92 | public static final String WIDGET_PACKAGE = ROOT_PACKAGE + "items.widgets.";
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93 |
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94 | public static final String CHARTS_PACKAGE = ROOT_PACKAGE
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95 | + "items.widgets.charts.";
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96 |
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97 | public static final String NAVIGATIONS_CLASS = ROOT_PACKAGE
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98 | + "actions.NavigationActions";
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99 |
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100 | // public static Class[] getClasses(String pckgname)
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101 | // throws ClassNotFoundException {
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102 | // ArrayList<Class> classes = new ArrayList<Class>();
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103 | // // Get a File object for the package
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104 | // File directory = null;
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105 | // // Must be a forward slash for loading resources
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106 | // String path = pckgname.replace('.', '/');
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107 | // System.err.println("Get classes: " + path);
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108 | // try {
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109 | // ClassLoader cld = Thread.currentThread().getContextClassLoader();
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110 | // if (cld == null) {
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111 | // throw new ClassNotFoundException("Can't get class loader.");
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112 | // }
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113 | // URL resource = null;
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114 | // try {
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115 | // Enumeration<URL> resources = cld.getResources(path);
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116 | // System.err.println(resources);
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117 | // while (resources.hasMoreElements()) {
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118 | // URL url = resources.nextElement();
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119 | // // Ingore the classes in the test folder when we are running
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120 | // // the program from Eclipse
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121 | // // This doesnt apply when running directly from the jar
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122 | // // because the test classes are not compiled into the jar.
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123 | // // TODO change this so it is only done when running from
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124 | // // Eclipse... if it causes problems again!!
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125 | // // if (!url.toString().toLowerCase().contains("/tests/")) {
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126 | // resource = url;
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127 | // // break;
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128 | // // }
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129 | // }
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130 | // } catch (Exception e) {
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131 | // e.printStackTrace();
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132 | // }
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133 | // if (resource == null) {
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134 | // throw new ClassNotFoundException("No resource for " + path);
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135 | // }
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136 | // directory = new File(resource.getFile());
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137 | // } catch (NullPointerException x) {
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138 | // x.printStackTrace();
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139 | // throw new ClassNotFoundException(pckgname + " (" + directory
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140 | // + ") does not appear to be a valid package");
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141 | // }
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142 | // // System.out.println("Path:" + directory.getPath());
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143 | // int splitPoint = directory.getPath().indexOf('!');
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144 | // if (splitPoint > 0) {
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145 | // try {
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146 | // String jarName = directory.getPath().substring(
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147 | // "file:".length(), splitPoint);
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148 | // // Windows HACK
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149 | // if (jarName.indexOf(":") >= 0)
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150 | // jarName = jarName.substring(1);
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151 | //
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152 | // if (jarName.indexOf("%20") > 0) {
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153 | // jarName = jarName.replace("%20", " ");
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154 | // }
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155 | // // System.out.println("JarName:" + jarName);
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156 | // JarFile jarFile = new JarFile(jarName);
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157 | //
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158 | // Enumeration entries = jarFile.entries();
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159 | // int classCount = 0;
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160 | // while (entries.hasMoreElements()) {
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161 | // ZipEntry entry = (ZipEntry) entries.nextElement();
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162 | // String className = entry.getName();
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163 | // if (className.startsWith(path)) {
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164 | // if (className.endsWith(".class")
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165 | // && !className.contains("$")) {
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166 | // classCount++;
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167 | // // The forward slash below is a forwards slash for
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168 | // // both windows and linux
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169 | // classes.add(Class.forName(className.substring(0,
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170 | // className.length() - 6).replace('/', '.')));
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171 | // }
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172 | // }
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173 | // }
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174 | // jarFile.close();
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175 | // // System.out.println("Loaded " + classCount + " classes from "
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176 | // // + pckgname);
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177 | //
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178 | // } catch (Exception e) {
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179 | // e.printStackTrace();
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180 | // }
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181 | //
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182 | // } else {
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183 | //
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184 | // if (directory.exists()) {
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185 | // // Get the list of the files contained in the package
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186 | // String[] files = directory.list();
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187 | // for (int i = 0; i < files.length; i++) {
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188 | // // we are only interested in .class files
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189 | // if (files[i].endsWith(".class") && !files[i].contains("$")
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190 | // && !files[i].equals("Actions.class")) {
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191 | // // removes the .class extension
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192 | // classes
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193 | // .add(Class.forName(pckgname
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194 | // + files[i].substring(0, files[i]
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195 | // .length() - 6)));
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196 | // }
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197 | // }
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198 | // } else {
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199 | // throw new ClassNotFoundException("The package '" + pckgname +
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200 | // "' in the directory '" + directory
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201 | // + "' does not appear to be a valid package");
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202 | // }
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203 | // }
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204 | // Class[] classesA = new Class[classes.size()];
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205 | // classes.toArray(classesA);
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206 | // return classesA;
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207 | // }
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208 |
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209 | /**
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210 | * Clears out the Action and JAG Hashtables and refills them. Normally this
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211 | * is only called once when the system starts.
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212 | *
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213 | * @return a warning message if there were any problems loading agents or
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214 | * actions.
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215 | */
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216 | public static List<String> Init() {
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217 |
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218 | List<String> warnings = new LinkedList<String>();
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219 | List<Class<?>> classes;
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220 |
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221 | try {
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222 | classes = PackageLoader.getClassesNew(AGENTS_PACKAGE);
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223 |
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224 | for (Class clazz : classes) {
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225 | String name = clazz.getSimpleName();
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226 | // maps lower case name to correct capitalised name
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227 | _JAGs.put(name.toLowerCase(), clazz.getName());
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228 | }
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229 |
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230 | classes = PackageLoader.getClassesNew(WIDGET_PACKAGE);
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231 |
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232 | for (Class clazz : classes) {
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233 | String name = clazz.getSimpleName();
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234 | // maps lower case name to correct capitalised name
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235 | _IWs.put(name.toLowerCase(), WIDGET_PACKAGE + name);
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236 | }
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237 |
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238 | classes = PackageLoader.getClassesNew(CHARTS_PACKAGE);
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239 |
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240 | for (Class clazz : classes) {
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241 | String name = clazz.getSimpleName();
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242 | // maps lower case name to correct capitalised name
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243 | _IWs.put("charts." + name.toLowerCase(), CHARTS_PACKAGE + name);
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244 | }
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245 | } catch (ClassNotFoundException e) {
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246 | System.err.println("ClassNotFoundException");
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247 | e.printStackTrace();
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248 | } catch (Exception e) {
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249 | warnings.add("You must have Java 1.5 or higher to run Expeditee");
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250 | warnings.add(e.getMessage());
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251 | e.printStackTrace();
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252 | }
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253 |
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254 | try {
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255 | classes = PackageLoader.getClassesNew(ACTIONS_PACKAGE);
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256 |
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257 | for (Class clazz : classes) {
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258 | String name = clazz.getSimpleName();
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259 | // Ignore the test classes
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260 | if (name.toLowerCase().contains("test"))
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261 | continue;
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262 | // read in all the methods from the class
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263 | try {
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264 | // System.out.println(name)
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265 | LoadMethods(Class.forName(ACTIONS_PACKAGE + name));
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266 | } catch (ClassNotFoundException e) {
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267 | Logger.Log(e);
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268 | e.printStackTrace();
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269 | }
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270 | }
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271 | } catch (Exception e) {
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272 | warnings.add(e.getMessage());
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273 | }
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274 | return warnings;
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275 | }
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276 |
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277 | /**
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278 | * Temporary, if a plugin system is devised then this would porbably become
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279 | * redundant. For now this allows external agents to be included.
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280 | *
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281 | * @param fullClassNames
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282 | * A set of full class names, that is, the class package and
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283 | * name. For example" "org.myplugin.agents.SerializedSearch"
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284 | *
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285 | * @return A collection of classes their were omitted because either there
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286 | * was a name clash with existing agents or did not exist. i.e. is
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287 | * completely successful this will be empty. Never null.
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288 | *
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289 | * @throws NullPointerException
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290 | * If fullClassNames is null.
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291 | *
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292 | */
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293 | public static Collection<String> addAgents(Set<String> fullClassNames) {
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294 | if (fullClassNames == null)
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295 | throw new NullPointerException("fullClassNames");
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296 |
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297 | List<String> omittedAgents = new LinkedList<String>();
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298 |
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299 | for (String fullName : fullClassNames) {
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300 |
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301 | if (fullName == null || fullName.length() == 0)
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302 | continue;
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303 |
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304 | boolean didAdd = false;
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305 |
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306 | try {
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307 | // Does the class even exist?
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308 | Class<?> c = Class.forName(fullName);
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309 |
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310 | String name = c.getSimpleName().toLowerCase();
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311 |
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312 | if (!_JAGs.containsKey(name)) {
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313 |
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314 | _JAGs.put(name, fullName);
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315 | didAdd = true;
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316 |
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317 | }
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318 |
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319 | } catch (ClassNotFoundException e) { // Nope it does not exist
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320 | e.printStackTrace();
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321 | }
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322 |
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323 | if (!didAdd)
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324 | omittedAgents.add(fullName);
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325 |
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326 | }
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327 |
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328 | return omittedAgents;
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329 | }
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330 |
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331 | /**
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332 | * Loads all the Methods that meet the requirements checked by MethodCheck
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333 | * into the hashtable.
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334 | *
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335 | * @param c
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336 | * The Class to load the Methods from.
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337 | */
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338 | public static void LoadMethods(Class<?> c) {
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339 | assert (c != null);
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340 |
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341 | // list of methods to test
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342 | Method[] toLoad = c.getMethods();
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343 |
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344 | for (Method m : toLoad) {
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345 | // only allow methods with the right modifiers
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346 | if (MethodCheck(m)) {
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347 | String lowercaseName = m.getName().toLowerCase();
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348 | if (!(_Actions.containsKey(lowercaseName)))
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349 | _Actions.put(lowercaseName, m);
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350 | else {
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351 | int i = 0;
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352 | while (_Actions.containsKey(lowercaseName + i))
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353 | i++;
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354 |
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355 | _Actions.put(lowercaseName + i, m);
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356 | }
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357 |
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358 | }
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359 | }
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360 | }
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361 |
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362 | /**
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363 | * Checks if the given Method corresponds to the restrictions of Action
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364 | * commands, namely: Declared (not inherited), Public, and Static, with a
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365 | * void return type.
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366 | *
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367 | * @param m
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368 | * The Method to check
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369 | * @return True if the Method meets the above conditions, false otherwise.
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370 | */
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371 | private static boolean MethodCheck(Method m) {
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372 | int mods = m.getModifiers();
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373 |
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374 | // check the method is declared (not inherited)
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375 | if ((mods & Method.DECLARED) != Method.DECLARED)
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376 | return false;
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377 |
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378 | // check the method is public
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379 | if ((mods & Modifier.PUBLIC) != Modifier.PUBLIC)
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380 | return false;
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381 |
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382 | // check the method is static
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383 | if ((mods & Modifier.STATIC) != Modifier.STATIC)
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384 | return false;
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385 |
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386 | // if we have not returned yet, then the tests have all passed
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387 | return true;
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388 | }
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389 |
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390 | /**
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391 | * Performs the given action command. The source frame and item are given
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392 | * because they are required by some actions. Note that the source frame
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393 | * does not ahve to be the items parent frame.
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394 | *
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395 | * If multiple actions exist with the name command.takeWhile(_ != ' ') then
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396 | * it attempts to find candidate that best matches the arguments passed in.
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397 | * (arguments are command.dropWhile(_ != ' ') or is floating)
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398 | *
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399 | * @param source
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400 | * The frame that the action should apply to
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401 | * @param launcher
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402 | * The item that has the action assigned to it
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403 | * @param command
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404 | * The action to perform
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405 | * @return
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406 | * @throws Exception
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407 | */
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408 | public static Object PerformAction(final Frame source, final Item launcher,
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409 | final String command) throws Exception {
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410 | final String actionName = getName(command);
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411 | final String parameters = command.substring(actionName.length()).trim();
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412 |
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413 | // Check for protection on frame.
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414 | if (ItemUtils.ContainsTag(source.getItems(), "@No" + actionName)) {
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415 | final String errorMsg = "Frame is protected by @No" + actionName
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416 | + " tag.";
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417 | MessageBay.errorMessage(errorMsg);
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418 | throw new RuntimeException(errorMsg);
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419 | }
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420 |
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421 | // Find all canditates. Sort by quantity of arguments.
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422 | final String lowercaseName = actionName.toLowerCase();
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423 | final Method firstCanditate = _Actions.get(lowercaseName);
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424 | // if this is not the name of a method, it may be the name of an agent
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425 | if (firstCanditate == null) {
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426 | String commandAgent = command.substring(actionName.length()).trim();
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427 | if(commandAgent.length() == 0 && launcher instanceof Text && launcher.isFloating())
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428 | commandAgent = launcher.getText();
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429 | LaunchAgent(actionName, commandAgent, source, launcher);
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430 | return null;
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431 | }
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432 | // need to save the frame if we are navigating away from it so we dont
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433 | // loose changes
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434 | if (firstCanditate.getDeclaringClass().getName().equals(NAVIGATIONS_CLASS)) {
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435 | FrameIO.SaveFrame(DisplayController.getCurrentFrame());
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436 | }
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437 | final List<Method> canditates = new LinkedList<Method>();
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438 | canditates.add(firstCanditate);
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439 | int i = 0;
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440 | while (_Actions.containsKey(lowercaseName + i))
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441 | canditates.add(_Actions.get(lowercaseName + i++));
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442 | canditates.sort(new Comparator<Method>() {
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443 | @Override
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444 | public int compare(final Method m1, final Method m2) {
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445 | final int parameterCountDifference = m2.getParameterCount() - m1.getParameterCount();
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446 | if(parameterCountDifference == 0) {
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447 | final Class<?>[] m1ParamTypes = m1.getParameterTypes();
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448 | final Class<?>[] m2ParamTypes = m2.getParameterTypes();
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449 |
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450 | //final ArrayList<Class<?>> typeOrder = Arrays.asList(Integer.TYPE, Double.TYPE, Float.TYPE, String.class);
|
---|
451 | // The above line doesn't compile in Eclipse Mars with the compile set to v1.8
|
---|
452 | // So changed to the following (low-tech) way:
|
---|
453 | ArrayList<Class<?>> typeOrder = new ArrayList<Class<?>>();
|
---|
454 | typeOrder.add(Integer.TYPE);
|
---|
455 | typeOrder.add(Double.TYPE);
|
---|
456 | typeOrder.add(Float.TYPE);
|
---|
457 | typeOrder.add(String.class);
|
---|
458 |
|
---|
459 | for(int i = 0,o = 0; i < m1ParamTypes.length && o < m2ParamTypes.length; i++,o++) {
|
---|
460 | final Class<?> m1ParamType = m1ParamTypes[i];
|
---|
461 | final Class<?> m2ParamType = m2ParamTypes[o];
|
---|
462 | final int m1ParamTypeIndex = typeOrder.indexOf(m1ParamType) != -1 ?
|
---|
463 | typeOrder.indexOf(m1ParamType) : typeOrder.size();
|
---|
464 | final int m2ParamTypeIndex = typeOrder.indexOf(m2ParamType) != -1 ?
|
---|
465 | typeOrder.indexOf(m2ParamType) : typeOrder.size();
|
---|
466 | final int paramMagnitude = m2ParamTypeIndex - m1ParamTypeIndex;
|
---|
467 | if(paramMagnitude != 0) return paramMagnitude;
|
---|
468 | }
|
---|
469 | }
|
---|
470 | return parameterCountDifference;
|
---|
471 | }
|
---|
472 | });
|
---|
473 |
|
---|
474 | // Find best candidate. Start searching with the candidate with most
|
---|
475 | // arguments.
|
---|
476 | for (final Method canditate : canditates) {
|
---|
477 | final Object[] paramObjects = CreateObjects(canditate, source,
|
---|
478 | launcher, parameters);
|
---|
479 | try {
|
---|
480 | if (paramObjects != null)
|
---|
481 | return canditate.invoke(null, paramObjects);
|
---|
482 | } catch (final Exception e) {
|
---|
483 | Logger.Log(e);
|
---|
484 | e.printStackTrace();
|
---|
485 | }
|
---|
486 | }
|
---|
487 | assert (canditates.size() > 0);
|
---|
488 | final String nl = System.getProperty("line.separator");
|
---|
489 | final StringBuilder errorBuilder = new StringBuilder(
|
---|
490 | "Incorrect parameters for " + actionName + nl + "Canditates: ");
|
---|
491 | for (final Method canditate : canditates)
|
---|
492 | errorBuilder.append(canditate + nl);
|
---|
493 | throw new RuntimeException(errorBuilder.toString());
|
---|
494 | }
|
---|
495 |
|
---|
496 | // /**
|
---|
497 | // * Performs the given action command. The source Frame and Item are given
|
---|
498 | // because they are required by some actions.
|
---|
499 | // * Note that the source frame does not have to be the Item's parent Frame.
|
---|
500 | // *
|
---|
501 | // * @param source
|
---|
502 | // * The Frame that the action should apply to
|
---|
503 | // * @param launcher
|
---|
504 | // * The Item that has the action assigned to it
|
---|
505 | // * @param command
|
---|
506 | // * The action to perform
|
---|
507 | // */
|
---|
508 | // public static Object PerformAction(Frame source, Item launcher, String
|
---|
509 | // command) throws Exception {
|
---|
510 | // // if (!command.equalsIgnoreCase("Restore"))
|
---|
511 | // // FrameIO.SaveFrame(source, false);
|
---|
512 | // // TODO make restore UNDO the changes made by the last action
|
---|
513 | //
|
---|
514 | // // separate method name and parameter names
|
---|
515 | // String mname = getName(command);
|
---|
516 | // command = command.substring(mname.length()).trim();
|
---|
517 | // // If no params are provided get them from a text item on the cursor
|
---|
518 | // if (command.length() == 0 && launcher instanceof Text &&
|
---|
519 | // launcher.isFloating()) {
|
---|
520 | // command = launcher.getText();
|
---|
521 | // }
|
---|
522 | //
|
---|
523 | // // Strip off the @ from annotation items
|
---|
524 | // if (mname.startsWith("@"))
|
---|
525 | // mname = mname.substring(1);
|
---|
526 | //
|
---|
527 | // mname = mname.trim();
|
---|
528 | // String lowercaseName = mname.toLowerCase();
|
---|
529 | // // check for protection on frame
|
---|
530 | // if (ItemUtils.ContainsTag(source.getItems(), "@No" + mname)) {
|
---|
531 | // throw new RuntimeException("Frame is protected by @No" + mname +
|
---|
532 | // " tag.");
|
---|
533 | // }
|
---|
534 | //
|
---|
535 | // // retrieve methods that match the name
|
---|
536 | // Method toRun = _Actions.get(lowercaseName);
|
---|
537 | //
|
---|
538 | // // if this is not the name of a method, it may be the name of an agent
|
---|
539 | // if (toRun == null) {
|
---|
540 | // LaunchAgent(mname, command, source, launcher);
|
---|
541 | // return null;
|
---|
542 | // }
|
---|
543 | //
|
---|
544 | // // Need to save the frame if we are navigating away from it so we dont
|
---|
545 | // // loose changes
|
---|
546 | // if (toRun.getDeclaringClass().getName().equals(NAVIGATIONS_CLASS)) {
|
---|
547 | // FrameIO.SaveFrame(DisplayIO.getCurrentFrame());
|
---|
548 | // }
|
---|
549 | //
|
---|
550 | // // if there are duplicate methods with the same name
|
---|
551 | // List<Method> possibles = new LinkedList<Method>();
|
---|
552 | // possibles.add(toRun);
|
---|
553 | // int i = 0;
|
---|
554 | // while (_Actions.containsKey(lowercaseName + i)) {
|
---|
555 | // possibles.add(_Actions.get(lowercaseName + i));
|
---|
556 | // i++;
|
---|
557 | // }
|
---|
558 | //
|
---|
559 | // for (Method possible : possibles) {
|
---|
560 | // // try first with the launching item as a parameter
|
---|
561 | //
|
---|
562 | // // run method
|
---|
563 | // try {
|
---|
564 | // // convert parameters to objects and get the method to invoke
|
---|
565 | // Object[] parameters = CreateObjects(possible, source, launcher, command);
|
---|
566 | // // Check that there are the same amount of params
|
---|
567 | // if (parameters == null) {
|
---|
568 | // continue;
|
---|
569 | // }
|
---|
570 | //
|
---|
571 | // return possible.invoke(null, parameters);
|
---|
572 | // } catch (Exception e) {
|
---|
573 | // Logger.Log(e);
|
---|
574 | // e.printStackTrace();
|
---|
575 | // }
|
---|
576 | // }
|
---|
577 | // // If the actions was not found... then it is run as an agent
|
---|
578 | // assert (possibles.size() > 0);
|
---|
579 | // throw new RuntimeException("Incorrect parameters for " + mname);
|
---|
580 | // }
|
---|
581 |
|
---|
582 | /**
|
---|
583 | * Launches an agent with the given name, and passes in the given parameters
|
---|
584 | *
|
---|
585 | * @param name
|
---|
586 | * The name of the JAG to load
|
---|
587 | * @param parameters
|
---|
588 | * The parameters to pass to the JAG
|
---|
589 | * @param source
|
---|
590 | * The starting Frame that the JAG is being launched on
|
---|
591 | */
|
---|
592 | private static void LaunchAgent(String name, String parameters,
|
---|
593 | Frame source, Item clicked) throws Exception {
|
---|
594 | // Use the correct case version for printing error messages
|
---|
595 | String nameWithCorrectCase = name;
|
---|
596 | name = name.toLowerCase();
|
---|
597 |
|
---|
598 | String fullClassName = AGENTS_PACKAGE + name;
|
---|
599 |
|
---|
600 | try {
|
---|
601 | // check for stored capitalisation
|
---|
602 | if (_JAGs.containsKey(name)) {
|
---|
603 | fullClassName = _JAGs.get(name);
|
---|
604 | } else if (name.endsWith("tree")) {
|
---|
605 | parameters = name.substring(0, name.length() - "tree".length())
|
---|
606 | + " " + parameters;
|
---|
607 | fullClassName = AGENTS_PACKAGE + "writetree";
|
---|
608 |
|
---|
609 | } else if (name.endsWith("frame")) {
|
---|
610 | parameters = name
|
---|
611 | .substring(0, name.length() - "frame".length())
|
---|
612 | + " "
|
---|
613 | + parameters;
|
---|
614 | fullClassName = AGENTS_PACKAGE + "writeframe";
|
---|
615 | }
|
---|
616 |
|
---|
617 | // load the JAG class
|
---|
618 | Class<?> agentClass = Class.forName(fullClassName);
|
---|
619 |
|
---|
620 | // get the constructor for the JAG class
|
---|
621 | Constructor<?> con = null;
|
---|
622 | Constructor<?>[] constructors = agentClass.getConstructors();
|
---|
623 | Object[] params = null;
|
---|
624 |
|
---|
625 | parameters = parameters.trim();
|
---|
626 | // determine correct parameters for constructor
|
---|
627 | for (Constructor<?> c : constructors) {
|
---|
628 | Class<?>[] paramTypes = c.getParameterTypes();
|
---|
629 | int paramCount = paramTypes.length;
|
---|
630 | if (paramCount > 0 && parameters.length() > 0) {
|
---|
631 | params = new Object[paramCount];
|
---|
632 | String[] paramStrings = parameters.split("\\s+");
|
---|
633 | /**
|
---|
634 | * Any extra parameters will be treated as the rest of the
|
---|
635 | * string if the last param is a string
|
---|
636 | */
|
---|
637 | if (paramCount > paramStrings.length) {
|
---|
638 | continue;
|
---|
639 | }
|
---|
640 |
|
---|
641 | /**
|
---|
642 | * If there are extra parameters the last param must be a
|
---|
643 | * String
|
---|
644 | */
|
---|
645 | int lastParam = paramTypes.length - 1;
|
---|
646 |
|
---|
647 | if (paramCount < paramStrings.length
|
---|
648 | && !paramTypes[lastParam].equals(String.class)) {
|
---|
649 | continue;
|
---|
650 | }
|
---|
651 |
|
---|
652 | try {
|
---|
653 | for (int i = 0; i < paramCount; i++) {
|
---|
654 | SString nextParam = new SString(paramStrings[i]);
|
---|
655 | params[i] = null;
|
---|
656 | if (paramTypes[i].equals(int.class)
|
---|
657 | || paramTypes[i].equals(Integer.class)) {
|
---|
658 | params[i] = nextParam.integerValue().intValue();
|
---|
659 | } else if (paramTypes[i].equals(long.class)
|
---|
660 | || paramTypes[i].equals(Long.class)) {
|
---|
661 | params[i] = nextParam.integerValue();
|
---|
662 | } else if (paramTypes[i].equals(double.class)
|
---|
663 | || paramTypes[i].equals(Double.class)) {
|
---|
664 | params[i] = nextParam.doubleValue();
|
---|
665 | } else if (paramTypes[i].equals(float.class)
|
---|
666 | || paramTypes[i].equals(Float.class)) {
|
---|
667 | params[i] = nextParam.doubleValue()
|
---|
668 | .floatValue();
|
---|
669 | } else if (paramTypes[i].equals(boolean.class)
|
---|
670 | || paramTypes[i].equals(Boolean.class)) {
|
---|
671 | params[i] = nextParam.booleanValue();
|
---|
672 | } else if (paramTypes[i].equals(String.class)) {
|
---|
673 | params[i] = nextParam.stringValue();
|
---|
674 | } else {
|
---|
675 | throw new UnexpectedException(
|
---|
676 | "Unexpected type "
|
---|
677 | + paramTypes[i].getClass()
|
---|
678 | .toString());
|
---|
679 | }
|
---|
680 | }
|
---|
681 | } catch (Exception e) {
|
---|
682 | continue;
|
---|
683 | }
|
---|
684 |
|
---|
685 | if (paramCount < paramStrings.length) {
|
---|
686 |
|
---|
687 | /**
|
---|
688 | * Append extra params on the end of the last string
|
---|
689 | * param
|
---|
690 | */
|
---|
691 | String s = params[lastParam].toString();
|
---|
692 | for (int i = paramCount; i < paramStrings.length; i++) {
|
---|
693 | s += ' ' + paramStrings[i];
|
---|
694 | }
|
---|
695 | params[lastParam] = s;
|
---|
696 | }
|
---|
697 |
|
---|
698 | con = c;
|
---|
699 | break;
|
---|
700 | } else if (c.getParameterTypes().length == 0 && con == null) {
|
---|
701 | con = c;
|
---|
702 | params = null;
|
---|
703 | }
|
---|
704 | }
|
---|
705 |
|
---|
706 | // if there is no constructor, return
|
---|
707 | if (con == null) {
|
---|
708 | throw new RuntimeException(INVALID_PARAMETERS_ERROR
|
---|
709 | + nameWithCorrectCase);
|
---|
710 | }
|
---|
711 |
|
---|
712 | // create the JAG
|
---|
713 | Agent toLaunch = (Agent) con.newInstance(params);
|
---|
714 |
|
---|
715 | LaunchAgent(toLaunch, source, clicked);
|
---|
716 |
|
---|
717 | } catch (ClassNotFoundException cnf) {
|
---|
718 | _Agent = null;
|
---|
719 | throw new RuntimeException("'" + nameWithCorrectCase
|
---|
720 | + "' is not an action or agent.");
|
---|
721 | }
|
---|
722 | }
|
---|
723 |
|
---|
724 | public static void LaunchAgent(String name, String parameters, Frame source)
|
---|
725 | throws Exception {
|
---|
726 | LaunchAgent(name, parameters, source, null);
|
---|
727 | }
|
---|
728 |
|
---|
729 | /**
|
---|
730 | * Launches an agent from an already instantiated object.
|
---|
731 | *
|
---|
732 | * @param agent
|
---|
733 | * The agent to launch. Must not be null.
|
---|
734 | *
|
---|
735 | * @param source
|
---|
736 | * The calling frame that launched it. Must not be null.
|
---|
737 | *
|
---|
738 | * @param itemParam
|
---|
739 | * The item parameter for the agent.
|
---|
740 | *
|
---|
741 | * @throws NullPointerException
|
---|
742 | * if any of the arguments are null.
|
---|
743 | */
|
---|
744 | public static void LaunchAgent(Agent agent, Frame source, Item itemParam) {
|
---|
745 |
|
---|
746 | if (agent == null)
|
---|
747 | throw new NullPointerException("agent");
|
---|
748 | if (source == null)
|
---|
749 | throw new NullPointerException("source");
|
---|
750 | // if (itemParam == null) throw new NullPointerException("itemParam");
|
---|
751 |
|
---|
752 | String nameWithCorrectCase = agent.getClass().getSimpleName();
|
---|
753 |
|
---|
754 | try {
|
---|
755 |
|
---|
756 | // create the JAG
|
---|
757 | _Agent = agent;
|
---|
758 |
|
---|
759 | Thread.UncaughtExceptionHandler h = new Thread.UncaughtExceptionHandler() {
|
---|
760 | public void uncaughtException(Thread th, Throwable ex) {
|
---|
761 |
|
---|
762 | MessageBay.errorMessage("Error occurred in Action: "
|
---|
763 | + th.getName());
|
---|
764 | ex.printStackTrace();
|
---|
765 |
|
---|
766 | stopAgent();
|
---|
767 | _Agent = null;
|
---|
768 | }
|
---|
769 | };
|
---|
770 |
|
---|
771 | Thread t = new Thread(_Agent, nameWithCorrectCase);
|
---|
772 |
|
---|
773 | t.setPriority(Thread.MIN_PRIORITY);
|
---|
774 | t.setUncaughtExceptionHandler(h);
|
---|
775 |
|
---|
776 | if (FreeItems.textOnlyAttachedToCursor()) {
|
---|
777 | itemParam = FreeItems.getItemAttachedToCursor();
|
---|
778 | }
|
---|
779 |
|
---|
780 | // check for errors during initialisation
|
---|
781 | if (!_Agent.initialise(source, itemParam)) {
|
---|
782 | _Agent = null;
|
---|
783 | throw new RuntimeException("Error initialising agent: "
|
---|
784 | + nameWithCorrectCase);
|
---|
785 | }
|
---|
786 |
|
---|
787 | // save the current frame (if necesssary)
|
---|
788 | // TODO make this nicer... ie. make Format an action rather than an
|
---|
789 | // agent and save frames only before running agents
|
---|
790 | if (!nameWithCorrectCase.equalsIgnoreCase("format")
|
---|
791 | && !nameWithCorrectCase.equalsIgnoreCase("sort")) {
|
---|
792 | FrameUtils.LeavingFrame(source);
|
---|
793 | }
|
---|
794 |
|
---|
795 | if (_Agent.hasResultString()) {
|
---|
796 | // Just run the agent on this thread... dont run it in the
|
---|
797 | // background
|
---|
798 | t.run();
|
---|
799 | if (_Agent != null) {
|
---|
800 | String result = _Agent.toString();
|
---|
801 | // Attach the result to the cursor
|
---|
802 | if (FreeItems.textOnlyAttachedToCursor()) {
|
---|
803 | Item resultItem = FreeItems.getItemAttachedToCursor();
|
---|
804 | resultItem.setText(result);
|
---|
805 | }
|
---|
806 | // if there is a completion frame, then display it to the
|
---|
807 | // user
|
---|
808 | }
|
---|
809 | } else {
|
---|
810 | t.start();
|
---|
811 | if (_Agent != null && _Agent.hasResultFrame()) {
|
---|
812 | // TODO We want to be able to navigate through the frames as
|
---|
813 | // the results are loading
|
---|
814 | Frame next = _Agent.getResultFrame();
|
---|
815 | FrameUtils.DisplayFrame(next, true, true);
|
---|
816 | }
|
---|
817 | }
|
---|
818 | } catch (Exception e) {
|
---|
819 | _Agent = null;
|
---|
820 | e.printStackTrace();
|
---|
821 | throw new RuntimeException("Error creating Agent: '"
|
---|
822 | + nameWithCorrectCase + "'");
|
---|
823 | }
|
---|
824 | DisplayController.requestRefresh(false);
|
---|
825 | }
|
---|
826 |
|
---|
827 | /**
|
---|
828 | * Used to determine if the previously launched agent is still executing.
|
---|
829 | *
|
---|
830 | * @return True if the last Agent is still executing, False otherwise.
|
---|
831 | */
|
---|
832 | public static boolean isAgentRunning() {
|
---|
833 | if (_Agent != null)
|
---|
834 | return _Agent.isRunning();
|
---|
835 |
|
---|
836 | return false;
|
---|
837 | }
|
---|
838 |
|
---|
839 | /**
|
---|
840 | * Stops the currently running Agent (If there is one) by calling
|
---|
841 | * Agent.stop(). Note: This may not stop the Agent immediately, but the
|
---|
842 | * Agent should terminate as soon as it is safe to do so.
|
---|
843 | */
|
---|
844 | public static void stopAgent() {
|
---|
845 | if (_Agent != null && _Agent.isRunning()) {
|
---|
846 | MessageBay.errorMessage("Stopping Agent...");
|
---|
847 | _Agent.stop();
|
---|
848 | }
|
---|
849 | }
|
---|
850 |
|
---|
851 | public static void interruptAgent() {
|
---|
852 | if (_Agent != null) {
|
---|
853 | _Agent.interrupt();
|
---|
854 | }
|
---|
855 | }
|
---|
856 |
|
---|
857 | /**
|
---|
858 | * Converts the given String of values into an array of Objects
|
---|
859 | *
|
---|
860 | * @param launcher
|
---|
861 | * The Item used to launch the action, it may be required as a
|
---|
862 | * parameter
|
---|
863 | * @param values
|
---|
864 | * A list of space separated String values to convert to objects
|
---|
865 | * @return The created array of Objects
|
---|
866 | */
|
---|
867 | public static Object[] CreateObjects(Method method, Frame source,
|
---|
868 | Item launcher, String values) {
|
---|
869 | // The parameter types that should be created from the given String
|
---|
870 | Class<?>[] paramTypes = method.getParameterTypes();
|
---|
871 |
|
---|
872 | int paramCount = paramTypes.length;
|
---|
873 | // if the method has no parameters
|
---|
874 | if (paramCount == 0)
|
---|
875 | return new Object[0];
|
---|
876 |
|
---|
877 | Object[] objects = new Object[paramCount];
|
---|
878 | int ind = 0;
|
---|
879 |
|
---|
880 | /*
|
---|
881 | * if the first class in the list is a frame or item, it is the source
|
---|
882 | * or launcher length must be at least one if we are still running
|
---|
883 | */
|
---|
884 | if (paramTypes[ind] == Frame.class) {
|
---|
885 | objects[ind] = source;
|
---|
886 | ind++;
|
---|
887 | }
|
---|
888 |
|
---|
889 | // Check if the second item is an item
|
---|
890 | if (paramCount > ind && Item.class.isAssignableFrom(paramTypes[ind])) {
|
---|
891 | objects[ind] = launcher;
|
---|
892 | ind++;
|
---|
893 | }// If there is stuff on the cursor use it for the rest of the params
|
---|
894 | else if (launcher != null && launcher.isFloating()) {
|
---|
895 | values = launcher.getText();
|
---|
896 | }
|
---|
897 |
|
---|
898 | String param = values;
|
---|
899 | // convert the rest of the objects
|
---|
900 | for (; ind < objects.length; ind++) {
|
---|
901 | // check if its the last param and combine
|
---|
902 | if (values.length() > 0 && ind == objects.length - 1) {
|
---|
903 | param = values.trim();
|
---|
904 | // check if its a string
|
---|
905 | if (param.length() > 0 && param.charAt(0) == '"') {
|
---|
906 | int endOfString = param.indexOf('"', 1);
|
---|
907 | if (endOfString > 0) {
|
---|
908 | param = param.substring(1, endOfString);
|
---|
909 | }
|
---|
910 | }
|
---|
911 | } else {// strip off the next value
|
---|
912 | param = ParseValue(values);
|
---|
913 | values = RemainingParams(values);
|
---|
914 | }
|
---|
915 | // convert the value to an object
|
---|
916 | try {
|
---|
917 | Object o = Conversion.Convert(paramTypes[ind], param);
|
---|
918 | if (o == null)
|
---|
919 | return null;
|
---|
920 | objects[ind] = o;
|
---|
921 | } catch (Exception e) {
|
---|
922 | return null;
|
---|
923 | }
|
---|
924 | }
|
---|
925 |
|
---|
926 | return objects;
|
---|
927 | }
|
---|
928 |
|
---|
929 | /**
|
---|
930 | * Returns a string containing the remaining params after ignoring the first
|
---|
931 | * one.
|
---|
932 | *
|
---|
933 | * @param params
|
---|
934 | * a space sparated list of N parameters
|
---|
935 | * @return the remaining N - 1 parameters
|
---|
936 | */
|
---|
937 | public static String RemainingParams(String params) {
|
---|
938 | if (params.length() == 0)
|
---|
939 | return null;
|
---|
940 |
|
---|
941 | // remove leading and trailing spaces
|
---|
942 | params = params.trim();
|
---|
943 |
|
---|
944 | // if there are no more parameters, we are done
|
---|
945 | if (params.indexOf(" ") < 0) {
|
---|
946 | return "";
|
---|
947 | }
|
---|
948 |
|
---|
949 | // Check if we have a string parameter
|
---|
950 | if (params.charAt(0) == '"') {
|
---|
951 | int endOfString = params.indexOf('"', 1);
|
---|
952 | if (endOfString > 0) {
|
---|
953 | if (endOfString > params.length())
|
---|
954 | return "";
|
---|
955 | return params.substring(endOfString + 1).trim();
|
---|
956 | }
|
---|
957 | }
|
---|
958 |
|
---|
959 | return params.substring(params.indexOf(" ")).trim();
|
---|
960 | }
|
---|
961 |
|
---|
962 | /**
|
---|
963 | * Returns the first value in the space separated String of parameters
|
---|
964 | * passed in. Strings are enclosed in double quotes.
|
---|
965 | *
|
---|
966 | * @param params
|
---|
967 | * The String of space separated values
|
---|
968 | * @return The first value in the String
|
---|
969 | */
|
---|
970 | public static String ParseValue(String params) {
|
---|
971 | if (params.length() == 0)
|
---|
972 | return null;
|
---|
973 |
|
---|
974 | // remove leading and trailing spaces
|
---|
975 | String param = params.trim();
|
---|
976 |
|
---|
977 | // Check if we have a string parameter
|
---|
978 | if (param.charAt(0) == '"') {
|
---|
979 | int endOfString = param.indexOf('"', 1);
|
---|
980 | if (endOfString > 0)
|
---|
981 | return param.substring(1, endOfString);
|
---|
982 | }
|
---|
983 |
|
---|
984 | // if there are no more parameters, we are done
|
---|
985 | if (param.indexOf(" ") < 0) {
|
---|
986 | return param;
|
---|
987 | }
|
---|
988 |
|
---|
989 | return param.substring(0, param.indexOf(" "));
|
---|
990 | }
|
---|
991 |
|
---|
992 | /**
|
---|
993 | * Separates the name of the given command from any parameters and returns
|
---|
994 | * them Also deals with leading '@'s and leading and tailing whitespace.
|
---|
995 | *
|
---|
996 | * @param command
|
---|
997 | * The String to separate out the Action or Agent name from
|
---|
998 | * @return The name of the Action of Agent with parameters stripped off
|
---|
999 | */
|
---|
1000 | private static String getName(String command) {
|
---|
1001 | if (command.startsWith("@"))
|
---|
1002 | command = command.substring(1);
|
---|
1003 | command = command.trim();
|
---|
1004 | if (command.indexOf(" ") < 0)
|
---|
1005 | return command;
|
---|
1006 |
|
---|
1007 | return command.substring(0, command.indexOf(" "));
|
---|
1008 | }
|
---|
1009 |
|
---|
1010 | /**
|
---|
1011 | * Gets an uncapitalized font name and returns the capitalized font name.
|
---|
1012 | * The capitalized form can be used with the Font.decoded method to get a
|
---|
1013 | * corresponding Font object.
|
---|
1014 | *
|
---|
1015 | * @param fontName
|
---|
1016 | * a font name in mixed case
|
---|
1017 | * @return the correct capitalized form of the font name
|
---|
1018 | */
|
---|
1019 | public static String getCapitalizedFontName(String fontName) {
|
---|
1020 | // Initialize the fonts if they have not already been loaded
|
---|
1021 | initFonts();
|
---|
1022 | return _Fonts.get(fontName.toLowerCase());
|
---|
1023 | }
|
---|
1024 |
|
---|
1025 | /**
|
---|
1026 | * Initialise the fontsList if it has not been done already
|
---|
1027 | */
|
---|
1028 | private static void initFonts() {
|
---|
1029 | if (_Fonts.size() == 0) {
|
---|
1030 | String[] availableFonts = EcosystemManager.getFontManager().getRegisteredFontFamilies();
|
---|
1031 | for (String s : availableFonts) {
|
---|
1032 | _Fonts.put(s.toLowerCase(), s);
|
---|
1033 | }
|
---|
1034 | }
|
---|
1035 | }
|
---|
1036 |
|
---|
1037 | public static HashMap<String, String> getFonts() {
|
---|
1038 | initFonts();
|
---|
1039 | return _Fonts;
|
---|
1040 | }
|
---|
1041 |
|
---|
1042 | public static Object PerformActionCatchErrors(Frame current, Item launcher,
|
---|
1043 | String command) {
|
---|
1044 | try {
|
---|
1045 | return PerformAction(current, launcher, command);
|
---|
1046 | } catch (RuntimeException e) {
|
---|
1047 | e.printStackTrace();
|
---|
1048 | MessageBay.errorMessage("Action failed: " + e.getMessage());
|
---|
1049 | } catch (Exception e) {
|
---|
1050 | e.printStackTrace();
|
---|
1051 | MessageBay.errorMessage("Action failed: "
|
---|
1052 | + e.getClass().getSimpleName());
|
---|
1053 | }
|
---|
1054 | return null;
|
---|
1055 | }
|
---|
1056 |
|
---|
1057 | /**
|
---|
1058 | * Gets the full class path for a widget with a given case insensitive name.
|
---|
1059 | *
|
---|
1060 | * @param widgetName
|
---|
1061 | * @return
|
---|
1062 | */
|
---|
1063 | public static String getClassName(String widgetName) {
|
---|
1064 | return _IWs.get(widgetName.toLowerCase());
|
---|
1065 | }
|
---|
1066 |
|
---|
1067 | static List<String> getActions() {
|
---|
1068 | List<String> actionNames = new LinkedList<String>();
|
---|
1069 | for (Method m : _Actions.values()) {
|
---|
1070 | StringBuilder sb = new StringBuilder();
|
---|
1071 | sb.append(m.getName());
|
---|
1072 | for (Class<?> c : m.getParameterTypes()) {
|
---|
1073 | sb.append(" ").append(c.getSimpleName());
|
---|
1074 | }
|
---|
1075 | actionNames.add(sb.toString());
|
---|
1076 | }
|
---|
1077 |
|
---|
1078 | return actionNames;
|
---|
1079 | }
|
---|
1080 |
|
---|
1081 | static List<String> getAgents() {
|
---|
1082 | List<String> agentNames = new LinkedList<String>();
|
---|
1083 |
|
---|
1084 | for (String s : _JAGs.values()) {
|
---|
1085 | agentNames.add(s.substring(s.lastIndexOf('.') + 1));
|
---|
1086 | }
|
---|
1087 |
|
---|
1088 | return agentNames;
|
---|
1089 | }
|
---|
1090 | }
|
---|