1 | package org.expeditee.actions;
|
---|
2 |
|
---|
3 | import java.awt.GraphicsEnvironment;
|
---|
4 | import java.io.File;
|
---|
5 | import java.lang.reflect.Constructor;
|
---|
6 | import java.lang.reflect.Method;
|
---|
7 | import java.lang.reflect.Modifier;
|
---|
8 | import java.net.URL;
|
---|
9 | import java.util.ArrayList;
|
---|
10 | import java.util.Collection;
|
---|
11 | import java.util.Enumeration;
|
---|
12 | import java.util.HashMap;
|
---|
13 | import java.util.LinkedList;
|
---|
14 | import java.util.List;
|
---|
15 | import java.util.jar.JarFile;
|
---|
16 | import java.util.zip.ZipEntry;
|
---|
17 |
|
---|
18 | import org.expeditee.agents.Agent;
|
---|
19 | import org.expeditee.gui.DisplayIO;
|
---|
20 | import org.expeditee.gui.Frame;
|
---|
21 | import org.expeditee.gui.FrameGraphics;
|
---|
22 | import org.expeditee.gui.FrameIO;
|
---|
23 | import org.expeditee.gui.FrameUtils;
|
---|
24 | import org.expeditee.io.Conversion;
|
---|
25 | import org.expeditee.io.Logger;
|
---|
26 | import org.expeditee.items.Item;
|
---|
27 | import org.expeditee.items.ItemUtils;
|
---|
28 |
|
---|
29 | /**
|
---|
30 | * The Action class is used to launch Actions and Agents.
|
---|
31 | *
|
---|
32 | * This class checks all class files in the same directory, and reads in and
|
---|
33 | * adds all the methods from them. The methods are stored in a Hashtable so that
|
---|
34 | * the lowercase method names can be mapped to the correctly capatilized method
|
---|
35 | * names (to provide case-insensitivity)
|
---|
36 | *
|
---|
37 | * When adding an action to a class in the actions folder the following must be
|
---|
38 | * considered:
|
---|
39 | * <li> If the first parameter is of type Frame or Item they will be called with
|
---|
40 | * the current frame and the item used to execute the action.</li>
|
---|
41 | * <li> If the second item is also of type Frame or Item it will be set to the
|
---|
42 | * current frame or item.</li>
|
---|
43 | * <li> If there are multiple overloads for the same method they should be
|
---|
44 | * declared in order of the methods with the most parameteres to least
|
---|
45 | * parameters.</li>
|
---|
46 | */
|
---|
47 | public class Actions {
|
---|
48 |
|
---|
49 | private static final String INVALID_PARAMETERS_ERROR = "Invalid parameters for agent: "; //$NON-NLS-1$
|
---|
50 |
|
---|
51 | // the currently running agent (if there is one)
|
---|
52 | private static Agent _Agent = null;
|
---|
53 |
|
---|
54 | // maps lower case method names to the method
|
---|
55 | private static HashMap<String, Method> _Actions = new HashMap<String, Method>();
|
---|
56 |
|
---|
57 | // map lower case fonts to capitalized fonts
|
---|
58 | protected static HashMap<String, String> _Fonts = new HashMap<String, String>();
|
---|
59 |
|
---|
60 | // maps lower case JAG class names to capitalized JAG names
|
---|
61 | private static HashMap<String, String> _JAGs = new HashMap<String, String>();
|
---|
62 |
|
---|
63 | public static final String ROOT_PACKAGE = "org.expeditee.";
|
---|
64 |
|
---|
65 | // Package and class file locations
|
---|
66 | private static final String ACTIONS_PACKAGE = ROOT_PACKAGE + "actions.";
|
---|
67 |
|
---|
68 | private static final String AGENTS_PACKAGE = ROOT_PACKAGE + "agents.";
|
---|
69 |
|
---|
70 | private static final String NAVIGATIONS_CLASS = ROOT_PACKAGE
|
---|
71 | + "actions.NavigationActions";
|
---|
72 |
|
---|
73 | public static Class[] getClasses(String pckgname)
|
---|
74 | throws ClassNotFoundException {
|
---|
75 | ArrayList<Class> classes = new ArrayList<Class>();
|
---|
76 | // Get a File object for the package
|
---|
77 | File directory = null;
|
---|
78 | // Must be a forward slash for loading resources
|
---|
79 | String path = pckgname.replace('.', '/');
|
---|
80 | // System.out.println("Get classes: " + path);
|
---|
81 | try {
|
---|
82 | ClassLoader cld = Thread.currentThread().getContextClassLoader();
|
---|
83 | if (cld == null) {
|
---|
84 | throw new ClassNotFoundException("Can't get class loader.");
|
---|
85 | }
|
---|
86 | URL resource = null;
|
---|
87 | try {
|
---|
88 | Enumeration<URL> resources = cld.getResources(path);
|
---|
89 | while (resources.hasMoreElements()) {
|
---|
90 | URL url = resources.nextElement();
|
---|
91 | // Ingore the classes in the test folder when we are running
|
---|
92 | // the program from Eclipse
|
---|
93 | // This doesnt apply when running directly from the jar
|
---|
94 | // because the test classes are not compiled into the jar.
|
---|
95 | if (!url.toString().toLowerCase().contains("test")) {
|
---|
96 | resource = url;
|
---|
97 | break;
|
---|
98 | }
|
---|
99 | }
|
---|
100 | } catch (Exception e) {
|
---|
101 |
|
---|
102 | }
|
---|
103 | if (resource == null) {
|
---|
104 | throw new ClassNotFoundException("No resource for " + path);
|
---|
105 | }
|
---|
106 | directory = new File(resource.getFile());
|
---|
107 | } catch (NullPointerException x) {
|
---|
108 | throw new ClassNotFoundException(pckgname + " (" + directory
|
---|
109 | + ") does not appear to be a valid package");
|
---|
110 | }
|
---|
111 | // System.out.println("Path:" + directory.getPath());
|
---|
112 | int splitPoint = directory.getPath().indexOf('!');
|
---|
113 | if (splitPoint > 0) {
|
---|
114 | try {
|
---|
115 | String jarName = directory.getPath().substring(
|
---|
116 | "file:".length(), splitPoint);
|
---|
117 | // Windows HACK
|
---|
118 | if (jarName.indexOf(":") >= 0)
|
---|
119 | jarName = jarName.substring(1);
|
---|
120 |
|
---|
121 | if (jarName.indexOf("%20") > 0) {
|
---|
122 | jarName = jarName.replace("%20", " ");
|
---|
123 | }
|
---|
124 | // System.out.println("JarName:" + jarName);
|
---|
125 | JarFile jarFile = new JarFile(jarName);
|
---|
126 |
|
---|
127 | Enumeration entries = jarFile.entries();
|
---|
128 | int classCount = 0;
|
---|
129 | while (entries.hasMoreElements()) {
|
---|
130 | ZipEntry entry = (ZipEntry) entries.nextElement();
|
---|
131 | String className = entry.getName();
|
---|
132 | if (className.startsWith(path)) {
|
---|
133 | if (className.endsWith(".class")
|
---|
134 | && !className.contains("$")) {
|
---|
135 | classCount++;
|
---|
136 | // The forward slash below is a forwards slash for
|
---|
137 | // both windows and linux
|
---|
138 | classes.add(Class.forName(className.substring(0,
|
---|
139 | className.length() - 6).replace('/', '.')));
|
---|
140 | }
|
---|
141 | }
|
---|
142 | }
|
---|
143 | jarFile.close();
|
---|
144 | // System.out.println("Loaded " + classCount + " classes from "
|
---|
145 | // + pckgname);
|
---|
146 |
|
---|
147 | } catch (Exception e) {
|
---|
148 | e.printStackTrace();
|
---|
149 | }
|
---|
150 |
|
---|
151 | } else {
|
---|
152 |
|
---|
153 | if (directory.exists()) {
|
---|
154 | // Get the list of the files contained in the package
|
---|
155 | String[] files = directory.list();
|
---|
156 | for (int i = 0; i < files.length; i++) {
|
---|
157 | // we are only interested in .class files
|
---|
158 | if (files[i].endsWith(".class") && !files[i].contains("$")
|
---|
159 | && !files[i].equals("Actions.class")) {
|
---|
160 | // removes the .class extension
|
---|
161 | classes
|
---|
162 | .add(Class.forName(pckgname
|
---|
163 | + files[i].substring(0, files[i]
|
---|
164 | .length() - 6)));
|
---|
165 | }
|
---|
166 | }
|
---|
167 | } else {
|
---|
168 | throw new ClassNotFoundException(pckgname + " (" + directory
|
---|
169 | + ") does not appear to be a valid package");
|
---|
170 | }
|
---|
171 | }
|
---|
172 | Class[] classesA = new Class[classes.size()];
|
---|
173 | classes.toArray(classesA);
|
---|
174 | return classesA;
|
---|
175 | }
|
---|
176 |
|
---|
177 | /**
|
---|
178 | * Clears out the Action and JAG Hashtables and refills them. Normally this
|
---|
179 | * is only called once when the system starts.
|
---|
180 | *
|
---|
181 | * @return a warning message if there were any problems loading agents or
|
---|
182 | * actions.
|
---|
183 | */
|
---|
184 | public static Collection<String> Init() {
|
---|
185 |
|
---|
186 | Collection<String> warnings = new LinkedList<String>();
|
---|
187 | Class[] classes;
|
---|
188 |
|
---|
189 | try {
|
---|
190 | classes = getClasses(AGENTS_PACKAGE);
|
---|
191 |
|
---|
192 | for (int i = 0; i < classes.length; i++) {
|
---|
193 | String name = classes[i].getSimpleName();
|
---|
194 | // maps lower case name to correct capitalised name
|
---|
195 | _JAGs.put(name.toLowerCase(), name);
|
---|
196 | }
|
---|
197 | } catch (Exception e) {
|
---|
198 | warnings.add("You must have Java 1.5 or higher to run Expeditee");
|
---|
199 | warnings.add(e.getMessage());
|
---|
200 | }
|
---|
201 | try {
|
---|
202 | classes = getClasses(ACTIONS_PACKAGE);
|
---|
203 |
|
---|
204 | for (int i = 0; i < classes.length; i++) {
|
---|
205 | String name = classes[i].getSimpleName();
|
---|
206 | // Ignore the test classes
|
---|
207 | if (name.toLowerCase().contains("test"))
|
---|
208 | continue;
|
---|
209 | // read in all the methods from the class
|
---|
210 | try {
|
---|
211 | // System.out.println(name)
|
---|
212 | LoadMethods(Class.forName(ACTIONS_PACKAGE + name));
|
---|
213 | } catch (ClassNotFoundException e) {
|
---|
214 | Logger.Log(e);
|
---|
215 | e.printStackTrace();
|
---|
216 | }
|
---|
217 | }
|
---|
218 | } catch (Exception e) {
|
---|
219 | warnings.add(e.getMessage());
|
---|
220 | }
|
---|
221 | return warnings;
|
---|
222 | }
|
---|
223 |
|
---|
224 | /**
|
---|
225 | * Loads all the Methods that meet the requirements checked by MethodCheck
|
---|
226 | * into the hashtable.
|
---|
227 | *
|
---|
228 | * @param c
|
---|
229 | * The Class to load the Methods from.
|
---|
230 | */
|
---|
231 | private static void LoadMethods(Class c) {
|
---|
232 | // list of methods to test
|
---|
233 | Method[] toLoad = c.getMethods();
|
---|
234 |
|
---|
235 | for (Method m : toLoad) {
|
---|
236 | // only allow methods with the right modifiers
|
---|
237 | if (MethodCheck(m)) {
|
---|
238 | String lowercaseName = m.getName().toLowerCase();
|
---|
239 | if (!(_Actions.containsKey(lowercaseName)))
|
---|
240 | _Actions.put(lowercaseName, m);
|
---|
241 | else {
|
---|
242 | int i = 0;
|
---|
243 | while (_Actions.containsKey(lowercaseName + i))
|
---|
244 | i++;
|
---|
245 |
|
---|
246 | _Actions.put(lowercaseName + i, m);
|
---|
247 | }
|
---|
248 |
|
---|
249 | }
|
---|
250 | }
|
---|
251 | }
|
---|
252 |
|
---|
253 | /**
|
---|
254 | * Checks if the given Method corresponds to the restrictions of Action
|
---|
255 | * commands, namely: Declared (not inherited), Public, and Static, with a
|
---|
256 | * void return type.
|
---|
257 | *
|
---|
258 | * @param m
|
---|
259 | * The Method to check
|
---|
260 | * @return True if the Method meets the above conditions, false otherwise.
|
---|
261 | */
|
---|
262 | private static boolean MethodCheck(Method m) {
|
---|
263 | // the return type must be void
|
---|
264 | if (m.getReturnType() != void.class)
|
---|
265 | return false;
|
---|
266 |
|
---|
267 | int mods = m.getModifiers();
|
---|
268 |
|
---|
269 | // check the method is declared (not inherited)
|
---|
270 | if ((mods & Method.DECLARED) != Method.DECLARED)
|
---|
271 | return false;
|
---|
272 |
|
---|
273 | // check the method is public
|
---|
274 | if ((mods & Modifier.PUBLIC) != Modifier.PUBLIC)
|
---|
275 | return false;
|
---|
276 |
|
---|
277 | // check the method is static
|
---|
278 | if ((mods & Modifier.STATIC) != Modifier.STATIC)
|
---|
279 | return false;
|
---|
280 |
|
---|
281 | // if we have not returned yet, then the tests have all passed
|
---|
282 | return true;
|
---|
283 | }
|
---|
284 |
|
---|
285 | /**
|
---|
286 | * Performs the given action command. The source Frame and Item are given
|
---|
287 | * because they are required by some actions. Note that the source frame
|
---|
288 | * does not have to be the Item's parent Frame.
|
---|
289 | *
|
---|
290 | * @param source
|
---|
291 | * The Frame that the action should apply to
|
---|
292 | * @param launcher
|
---|
293 | * The Item that has the action assigned to it
|
---|
294 | * @param command
|
---|
295 | * The action to perform
|
---|
296 | */
|
---|
297 | public static void PerformAction(Frame source, Item launcher, String command) {
|
---|
298 | // if (!command.equalsIgnoreCase("Restore"))
|
---|
299 | // FrameIO.SaveFrame(source, false);
|
---|
300 | // TODO make restore UNDO the changes made by the last action
|
---|
301 |
|
---|
302 | // separate method name and parameter names
|
---|
303 | String mname = getName(command);
|
---|
304 | if (command.length() > mname.length())
|
---|
305 | command = command.substring(mname.length() + 1);
|
---|
306 | else
|
---|
307 | command = "";
|
---|
308 |
|
---|
309 | // Strip off the @ from annotation items
|
---|
310 | if (mname.startsWith("@"))
|
---|
311 | mname = mname.substring(1);
|
---|
312 |
|
---|
313 | mname = mname.trim();
|
---|
314 | String lowercaseName = mname.toLowerCase();
|
---|
315 | // check for protection on frame
|
---|
316 | if (ItemUtils.ContainsTag(source.getItems(), "@No" + mname)) {
|
---|
317 | FrameGraphics.DisplayMessage("Frame is protected by @No" + mname
|
---|
318 | + " tag.");
|
---|
319 | return;
|
---|
320 | }
|
---|
321 |
|
---|
322 | // retrieve methods that match the name
|
---|
323 | Method toRun = _Actions.get(lowercaseName);
|
---|
324 |
|
---|
325 | // if this is not the name of a method, it may be the name of an agent
|
---|
326 | if (toRun == null) {
|
---|
327 | LaunchAgent(mname, command, source);
|
---|
328 | return;
|
---|
329 | }
|
---|
330 |
|
---|
331 | // Need to save the frame if we are navigating away from it so we dont
|
---|
332 | // loose changes
|
---|
333 | if (toRun.getDeclaringClass().getName().equals(NAVIGATIONS_CLASS)) {
|
---|
334 | FrameIO.SaveFrame(DisplayIO.getCurrentFrame());
|
---|
335 | }
|
---|
336 |
|
---|
337 | // if there are duplicate methods with the same name
|
---|
338 | List<Method> possibles = new LinkedList<Method>();
|
---|
339 | possibles.add(toRun);
|
---|
340 | int i = 0;
|
---|
341 | while (_Actions.containsKey(lowercaseName + i)) {
|
---|
342 | possibles.add(_Actions.get(lowercaseName + i));
|
---|
343 | i++;
|
---|
344 | }
|
---|
345 |
|
---|
346 | for (Method possible : possibles) {
|
---|
347 | // try first with the launching item as a parameter
|
---|
348 |
|
---|
349 | // run method
|
---|
350 | try {
|
---|
351 | // convert parameters to objects and get the method to invoke
|
---|
352 | Object[] parameters = CreateObjects(possible, source, launcher,
|
---|
353 | command);
|
---|
354 | // Check that there are the same amount of params
|
---|
355 | if (parameters == null) {
|
---|
356 | continue;
|
---|
357 | }
|
---|
358 |
|
---|
359 | possible.invoke(null, parameters);
|
---|
360 | return;
|
---|
361 | } catch (Exception e) {
|
---|
362 | Logger.Log(e);
|
---|
363 | e.printStackTrace();
|
---|
364 | }
|
---|
365 | }
|
---|
366 | if (possibles.size() > 0) {
|
---|
367 | FrameGraphics.ErrorMessage("Incorrect parameters for " + mname);
|
---|
368 | } else {
|
---|
369 | assert (false);
|
---|
370 | FrameGraphics.ErrorMessage(mname + " action not found");
|
---|
371 | }
|
---|
372 | }
|
---|
373 |
|
---|
374 | /**
|
---|
375 | * Launches an agent with the given name, and passes in the given parameters
|
---|
376 | *
|
---|
377 | * @param name
|
---|
378 | * The name of the JAG to load
|
---|
379 | * @param parameters
|
---|
380 | * The parameters to pass to the JAG
|
---|
381 | * @param source
|
---|
382 | * The starting Frame that the JAG is being launched on
|
---|
383 | */
|
---|
384 | private static void LaunchAgent(String name, String parameters, Frame source) {
|
---|
385 | // Use the correct case version for printing error messages
|
---|
386 | String nameWithCorrectCase = name;
|
---|
387 | name = name.toLowerCase();
|
---|
388 | // save the current frame (if necesssary)
|
---|
389 | // TODO make this nicer... ie. make Format an action rather than an
|
---|
390 | // agent and save frames only before running agents
|
---|
391 | if (!name.equalsIgnoreCase("format") && !name.equalsIgnoreCase("sort")) {
|
---|
392 | FrameUtils.LeavingFrame(source);
|
---|
393 | }
|
---|
394 |
|
---|
395 | try {
|
---|
396 | // check for stored capitalisation
|
---|
397 | if (_JAGs.containsKey(name.toLowerCase())) {
|
---|
398 | name = _JAGs.get(name.toLowerCase());
|
---|
399 | } else if (name.toLowerCase().endsWith("tree")) {
|
---|
400 | parameters = name.substring(0, name.length() - "tree".length())
|
---|
401 | + " " + parameters;
|
---|
402 | name = "WriteTree";
|
---|
403 | } else if (name.toLowerCase().endsWith("frame")) {
|
---|
404 | parameters = name
|
---|
405 | .substring(0, name.length() - "frame".length())
|
---|
406 | + " " + parameters;
|
---|
407 | name = "WriteFrame";
|
---|
408 | }
|
---|
409 |
|
---|
410 | // load the JAG class
|
---|
411 | Class agentClass = Class.forName(AGENTS_PACKAGE + name);
|
---|
412 |
|
---|
413 | // get the constructor for the JAG class
|
---|
414 | Constructor con = null;
|
---|
415 | Constructor[] constructors = agentClass.getConstructors();
|
---|
416 | Object[] params = null;
|
---|
417 |
|
---|
418 | // determine correct parameters for constructor
|
---|
419 | for (Constructor c : constructors) {
|
---|
420 | if (parameters.length() > 0
|
---|
421 | && c.getParameterTypes().length == 1) {
|
---|
422 | con = c;
|
---|
423 | params = new String[1];
|
---|
424 | params[0] = parameters;
|
---|
425 | break;
|
---|
426 | } else if (c.getParameterTypes().length == 0 && con == null) {
|
---|
427 | con = c;
|
---|
428 | }
|
---|
429 | }
|
---|
430 |
|
---|
431 | // if there is no constructor, return
|
---|
432 | if (con == null) {
|
---|
433 | FrameGraphics.DisplayMessage(INVALID_PARAMETERS_ERROR
|
---|
434 | + nameWithCorrectCase);
|
---|
435 | // System.out.println("Constructor not found...");
|
---|
436 | return;
|
---|
437 | }
|
---|
438 |
|
---|
439 | // create the JAG
|
---|
440 | _Agent = (Agent) con.newInstance(params);
|
---|
441 |
|
---|
442 | Thread t = new Thread(_Agent);
|
---|
443 | t.setPriority(Thread.MIN_PRIORITY);
|
---|
444 |
|
---|
445 | // check for errors during initialisation
|
---|
446 | if (!_Agent.initialise(source)) {
|
---|
447 | FrameGraphics.ErrorMessage("Error initialising agent: "
|
---|
448 | + nameWithCorrectCase);
|
---|
449 | return;
|
---|
450 | }
|
---|
451 |
|
---|
452 | _Agent.setStartFrame(source);
|
---|
453 |
|
---|
454 | t.start();
|
---|
455 |
|
---|
456 | // if there is a completion frame, then display it to the user
|
---|
457 | if (_Agent.hasResultFrame()) {
|
---|
458 | Frame next = _Agent.getResultFrame();
|
---|
459 | FrameUtils.DisplayFrame(next, true);
|
---|
460 | }
|
---|
461 |
|
---|
462 | } catch (ClassNotFoundException cnf) {
|
---|
463 | FrameGraphics.ErrorMessage(nameWithCorrectCase
|
---|
464 | + "' is not an action or agent.");
|
---|
465 | } catch (Exception e) {
|
---|
466 | FrameGraphics.ErrorMessage("Error creating Agent: '"
|
---|
467 | + nameWithCorrectCase + "'");
|
---|
468 | System.out.println("Agent set to Null.");
|
---|
469 | _Agent = null;
|
---|
470 | e.printStackTrace();
|
---|
471 | Logger.Log(e);
|
---|
472 | }
|
---|
473 |
|
---|
474 | return;
|
---|
475 | }
|
---|
476 |
|
---|
477 | /**
|
---|
478 | * Used to determine if the previously launched agent is still executing.
|
---|
479 | *
|
---|
480 | * @return True if the last Agent is still executing, False otherwise.
|
---|
481 | */
|
---|
482 | public static boolean isAgentRunning() {
|
---|
483 | if (_Agent != null)
|
---|
484 | return _Agent.isRunning();
|
---|
485 |
|
---|
486 | return false;
|
---|
487 | }
|
---|
488 |
|
---|
489 | /**
|
---|
490 | * Stops the currently running Agent (If there is one) by calling
|
---|
491 | * Agent.stop(). Note: This may not stop the Agent immediately, but the
|
---|
492 | * Agent should terminate as soon as it is safe to do so.
|
---|
493 | */
|
---|
494 | public static void stopAgent() {
|
---|
495 | if (_Agent != null && _Agent.isRunning()) {
|
---|
496 | FrameGraphics.ErrorMessage("Stopping Agent...");
|
---|
497 | _Agent.stop();
|
---|
498 | }
|
---|
499 | }
|
---|
500 |
|
---|
501 | public static void interruptAgent() {
|
---|
502 | if (_Agent != null) {
|
---|
503 | _Agent.interrupt();
|
---|
504 | }
|
---|
505 | }
|
---|
506 |
|
---|
507 | /**
|
---|
508 | * Converts the given String of values into an array of Objects
|
---|
509 | *
|
---|
510 | * @param launcher
|
---|
511 | * The Item used to launch the action, it may be required as a
|
---|
512 | * parameter
|
---|
513 | * @param values
|
---|
514 | * A list of space separated String values to convert to objects
|
---|
515 | * @return The created array of Objects
|
---|
516 | */
|
---|
517 | public static Object[] CreateObjects(Method method, Frame source,
|
---|
518 | Item launcher, String values) {
|
---|
519 | // The parameter types that should be created from the given String
|
---|
520 | Class[] paramTypes = method.getParameterTypes();
|
---|
521 |
|
---|
522 | // if the method has no parameters
|
---|
523 | if (paramTypes.length == 0)
|
---|
524 | return new Object[0];
|
---|
525 |
|
---|
526 | Object[] objects = new Object[paramTypes.length];
|
---|
527 | int ind = 0;
|
---|
528 |
|
---|
529 | // if the first class in the list is a frame or item, it is the source
|
---|
530 | // or launcher
|
---|
531 | // length must be at least one if we are still running
|
---|
532 | if (paramTypes[0] == Frame.class) {
|
---|
533 | objects[0] = source;
|
---|
534 | ind = 1;
|
---|
535 | } else if (Item.class.isAssignableFrom(paramTypes[0])) {
|
---|
536 | objects[0] = launcher;
|
---|
537 | ind = 1;
|
---|
538 | }
|
---|
539 |
|
---|
540 | // if the first class was a frame or item, the second class might be the
|
---|
541 | // other
|
---|
542 | if (paramTypes.length > 1 && objects[0] != null) {
|
---|
543 | if (paramTypes[1] == Frame.class) {
|
---|
544 | objects[1] = source;
|
---|
545 | ind = 2;
|
---|
546 | } else if (Item.class.isAssignableFrom(paramTypes[1])) {
|
---|
547 | objects[1] = launcher;
|
---|
548 | ind = 2;
|
---|
549 | }
|
---|
550 | }
|
---|
551 |
|
---|
552 | String param = values;
|
---|
553 | // convert the rest of the objects
|
---|
554 | for (; ind < objects.length; ind++) {
|
---|
555 | // check if its the last param and combine
|
---|
556 | if (values.length() > 0 && ind == objects.length - 1) {
|
---|
557 | param = values.trim();
|
---|
558 | // check if its a string
|
---|
559 | if (param.length() > 0 && param.charAt(0) == '"') {
|
---|
560 | int endOfString = param.indexOf('"', 1);
|
---|
561 | if (endOfString > 0) {
|
---|
562 | param = param.substring(0, endOfString);
|
---|
563 | }
|
---|
564 | }
|
---|
565 | } else {// strip off the next value
|
---|
566 | param = ParseValue(values);
|
---|
567 | values = RemainingParams(values);
|
---|
568 | }
|
---|
569 | // convert the value to an object
|
---|
570 | try {
|
---|
571 | Object o = Conversion.Convert(paramTypes[ind], param);
|
---|
572 | if (o == null)
|
---|
573 | return null;
|
---|
574 | objects[ind] = o;
|
---|
575 | } catch (Exception e) {
|
---|
576 | return null;
|
---|
577 | }
|
---|
578 | }
|
---|
579 |
|
---|
580 | return objects;
|
---|
581 | }
|
---|
582 |
|
---|
583 | /**
|
---|
584 | * Returns a string containing the remaining params after ignoring the first
|
---|
585 | * one.
|
---|
586 | *
|
---|
587 | * @param params
|
---|
588 | * a space sparated list of N parameters
|
---|
589 | * @return the remaining N - 1 parameters
|
---|
590 | */
|
---|
591 | public static String RemainingParams(String params) {
|
---|
592 | if (params.length() == 0)
|
---|
593 | return null;
|
---|
594 |
|
---|
595 | // remove leading and trailing spaces
|
---|
596 | params = params.trim();
|
---|
597 |
|
---|
598 | // if there are no more parameters, we are done
|
---|
599 | if (params.indexOf(" ") < 0) {
|
---|
600 | return "";
|
---|
601 | }
|
---|
602 |
|
---|
603 | // Check if we have a string parameter
|
---|
604 | if (params.charAt(0) == '"') {
|
---|
605 | int endOfString = params.indexOf('"', 1);
|
---|
606 | if (endOfString > 0) {
|
---|
607 | if (endOfString > params.length())
|
---|
608 | return "";
|
---|
609 | return params.substring(endOfString + 1).trim();
|
---|
610 | }
|
---|
611 | }
|
---|
612 |
|
---|
613 | return params.substring(params.indexOf(" ")).trim();
|
---|
614 | }
|
---|
615 |
|
---|
616 | /**
|
---|
617 | * Returns the first value in the space separated String of parameters
|
---|
618 | * passed in. Strings are enclosed in double quotes.
|
---|
619 | *
|
---|
620 | * @param params
|
---|
621 | * The String of space separated values
|
---|
622 | * @return The first value in the String
|
---|
623 | */
|
---|
624 | public static String ParseValue(String params) {
|
---|
625 | if (params.length() == 0)
|
---|
626 | return null;
|
---|
627 |
|
---|
628 | // remove leading and trailing spaces
|
---|
629 | String param = params.trim();
|
---|
630 |
|
---|
631 | // Check if we have a string parameter
|
---|
632 | if (param.charAt(0) == '"') {
|
---|
633 | int endOfString = param.indexOf('"', 1);
|
---|
634 | if (endOfString > 0)
|
---|
635 | return param.substring(1, endOfString);
|
---|
636 | }
|
---|
637 |
|
---|
638 | // if there are no more parameters, we are done
|
---|
639 | if (param.indexOf(" ") < 0) {
|
---|
640 | return param;
|
---|
641 | }
|
---|
642 |
|
---|
643 | return param.substring(0, param.indexOf(" "));
|
---|
644 | }
|
---|
645 |
|
---|
646 | /**
|
---|
647 | * Separates the name of the given command from any parameters and returns
|
---|
648 | * them
|
---|
649 | *
|
---|
650 | * @param command
|
---|
651 | * The String to separate out the Action or Agent name from
|
---|
652 | * @return The name of the Action of Agent with parameters stripped off
|
---|
653 | */
|
---|
654 | private static String getName(String command) {
|
---|
655 | if (command.indexOf(" ") < 0)
|
---|
656 | return command;
|
---|
657 |
|
---|
658 | return command.substring(0, command.indexOf(" "));
|
---|
659 | }
|
---|
660 |
|
---|
661 | /**
|
---|
662 | * Gets an uncapitalized font name and returns the capitalized font name.
|
---|
663 | * The capitalized form can be used with the Font.decoded method to get a
|
---|
664 | * corresponding Font object.
|
---|
665 | *
|
---|
666 | * @param fontName
|
---|
667 | * a font name in mixed case
|
---|
668 | * @return the correct capitalized form of the font name
|
---|
669 | */
|
---|
670 | public static String getCapitalizedFontName(String fontName) {
|
---|
671 | //Initialize the fonts if they have not already been loaded
|
---|
672 | if (_Fonts.size() == 0) {
|
---|
673 | String[] availableFonts = GraphicsEnvironment
|
---|
674 | .getLocalGraphicsEnvironment()
|
---|
675 | .getAvailableFontFamilyNames();
|
---|
676 | for (String s : availableFonts) {
|
---|
677 | _Fonts.put(s.toLowerCase(), s);
|
---|
678 | }
|
---|
679 | }
|
---|
680 | return _Fonts.get(fontName.toLowerCase());
|
---|
681 | }
|
---|
682 | }
|
---|