source: trunk/src/org/expeditee/gui/AttributeUtils.java@ 656

Last change on this file since 656 was 656, checked in by jts21, 10 years ago

Implement tooltips
File size: 27.0 KB
Line 
1package org.expeditee.gui;
2
3import java.awt.Color;
4import java.awt.Font;
5import java.awt.Point;
6import java.lang.reflect.InvocationTargetException;
7import java.lang.reflect.Method;
8import java.util.HashMap;
9import java.util.LinkedList;
10import java.util.List;
11
12import org.expeditee.io.Conversion;
13import org.expeditee.items.DotType;
14import org.expeditee.items.Item;
15import org.expeditee.items.Justification;
16import org.expeditee.items.PermissionPair;
17import org.expeditee.items.Picture;
18import org.expeditee.items.Text;
19import org.expeditee.simple.IncorrectTypeException;
20
21/**
22 * This class provides the methods to extract and set attributes of Items and
23 * Frames. These methods are called when a user merges a text item with
24 * <code>Attribute: Value</code> pairs.
25 *
26 * @author jdm18
27 *
28 */
29public class AttributeUtils {
30
31 public static final class Attribute {
32 public final String displayName;
33 public final Method getter;
34 public final Method setter;
35
36 public Attribute(String displayName, Method getter, Method setter) {
37 this.displayName = displayName;
38 this.getter = getter;
39 this.setter = setter;
40 }
41 }
42
43 public static final class AttributeSet {
44
45 // the internal hashmap
46 private final HashMap<String, Attribute> map;
47 // a list of keys in the order they were added (used to make attribute extraction consistent)
48 public final List<String> keys;
49
50 public AttributeSet(int size) {
51 map = new HashMap<String, Attribute>(size);
52 keys = new LinkedList<String>();
53 }
54
55 public void put(String attributeName, Method getter, Method setter) {
56 if(map.containsKey(attributeName.toLowerCase())) {
57 System.err.println(this + " already contains key '" + attributeName + "', overwriting value!");
58 } else {
59 // we keep an ordered list of attributes for extraction
60 keys.add(attributeName.toLowerCase());
61 }
62 map.put(attributeName.toLowerCase(), new Attribute(attributeName, getter, setter));
63 }
64
65 // Create a second reference the the same Attribute, using a different name
66 // Does not modify the list of keys
67 public void alias(String alias, String name) {
68 if(map.containsKey(name.toLowerCase())) {
69 map.put(alias.toLowerCase(), map.get(name.toLowerCase()));
70 } else {
71 System.err.println("Cannot add alias '" + alias + "', because key '" + name + "' does not exist!");
72 }
73 }
74
75 public boolean containsKey(String key) {
76 return map.containsKey(key);
77 }
78
79 public Attribute get(String key) {
80 return map.get(key);
81 }
82 }
83
84 public static final AttributeSet _Attrib = new AttributeSet(128);
85 public static final AttributeSet _FrameAttrib = new AttributeSet(16);
86
87
88 // List of attributes which are ignored when extracting attributes
89 private static List<String> _IgnoreGet = null;
90 // List of attributes which are ignored when setting attributes,
91 // if multiple attributes are being set at once
92 private static List<String> _IgnoreSet = null;
93
94 /***************************************************************************
95 * List of method names to show in extraced lists even when they return null
96 * (Null is often used to indicate the default value is used)
97 **************************************************************************/
98 private static List<Method> _AllowNull = null;
99
100 // private static HashMap<String, String> _Abbreviations = null;
101
102 public static void ensureReady() {
103 if(_IgnoreSet == null) {
104 initLists();
105 }
106 }
107
108 /**
109 * Initialises the _Ignore and _AllowNull lists.
110 */
111 private static void initLists() {
112
113 try {
114
115 Class<?>[] pPoint = { Point.class };
116 Class<?>[] pString = { String.class };
117 Class<?>[] pInt = { int.class };
118 Class<?>[] pIntO = { Integer.class };
119 Class<?>[] pFloat = { float.class };
120 Class<?>[] pFloatO = { Float.class };
121 Class<?>[] pColor = { Color.class };
122 Class<?>[] pBool = { boolean.class };
123 //Class[] pDouble = { double.class };
124 //Class[] pDoubleO = { Double.class };
125 Class<?>[] pArrow = { float.class, double.class, double.class };
126 Class<?>[] pList = { List.class };
127 Class<?>[] pIntArray = { int[].class };
128 Class<?>[] pJustification = { Justification.class };
129 Class<?>[] pPermission = { PermissionPair.class };
130 Class<?>[] pDotType = { DotType.class };
131
132 _IgnoreSet = new LinkedList<String>();
133 _IgnoreGet = new LinkedList<String>();
134 _AllowNull = new LinkedList<Method>();
135
136 // TODO load these in with reflection...
137 // Set the shortcuts with annotation tags on the methods
138 _IgnoreSet.add("date");
139 _IgnoreSet.add("datecreated");
140 _IgnoreSet.add("d");
141 _IgnoreSet.add("link");
142 _IgnoreSet.add("l");
143 _IgnoreSet.add("action");
144 _IgnoreSet.add("a");
145 _IgnoreSet.add("position");
146 _IgnoreSet.add("pos");
147 _IgnoreSet.add("p");
148 _IgnoreSet.add("x");
149 _IgnoreSet.add("y");
150
151 _IgnoreGet.add("x");
152 _IgnoreGet.add("y");
153 _IgnoreGet.add("text");
154 _IgnoreGet.add("gradientangle");
155
156 _AllowNull.add(Item.class.getMethod("getColor"));
157 _AllowNull.add(Item.class.getMethod("getBackgroundColor"));
158
159 _AllowNull.add(Frame.class.getMethod("getBackgroundColor"));
160 _AllowNull.add(Frame.class.getMethod("getForegroundColor"));
161
162 /*
163 * Populate the backing lists of attributes
164 */
165
166 // Frames
167 _FrameAttrib.put("Permission", Frame.class.getMethod("getPermission"),
168 Frame.class.getMethod("setPermission", pPermission));
169 _FrameAttrib.put("Owner", Frame.class.getMethod("getOwner"),
170 Frame.class.getMethod("setOwner", pString));
171 _FrameAttrib.put("DateCreated", Frame.class.getMethod("getDateCreated"),
172 null);
173 _FrameAttrib.put("LastModifyUser", Frame.class.getMethod("getLastModifyUser"),
174 null);
175 _FrameAttrib.put("LastModifyDate", Frame.class.getMethod("getLastModifyDate"),
176 null);
177 _FrameAttrib.put("ForegroundColor", Frame.class.getMethod("getForegroundColor"),
178 Frame.class.getMethod("setForegroundColor", pColor));
179 _FrameAttrib.put("BackgroundColor", Frame.class.getMethod("getBackgroundColor"),
180 Frame.class.getMethod("setBackgroundColor", pColor));
181
182 // aliases for attribute setting
183 _FrameAttrib.alias("fgc", "foregroundcolor");
184 _FrameAttrib.alias("bgc", "backgroundcolor");
185 _FrameAttrib.alias("p", "permission");
186
187
188 // Generic Items
189 _Attrib.put("DateCreated", Item.class.getMethod("getDateCreated"),
190 Item.class.getMethod("setDateCreated", pString));
191 _Attrib.put("Color", Item.class.getMethod("getColor"),
192 Item.class.getMethod("setColor", pColor));
193 _Attrib.put("BackgroundColor", Item.class.getMethod("getBackgroundColor"),
194 Item.class.getMethod("setBackgroundColor", pColor));
195 _Attrib.put("BorderColor", Item.class.getMethod("getBorderColor"),
196 Item.class.getMethod("setBorderColor", pColor));
197 _Attrib.put("AnchorRight", Item.class.getMethod("getAnchorRight"),
198 Item.class.getMethod("setAnchorRight", pFloatO));
199 _Attrib.put("AnchorBottom", Item.class.getMethod("getAnchorBottom"),
200 Item.class.getMethod("setAnchorBottom", pFloatO));
201 _Attrib.put("Position", Item.class.getMethod("getPosition"),
202 Item.class.getMethod("setPosition", pPoint));
203 _Attrib.put("Link", Item.class.getMethod("getLink"),
204 Item.class.getMethod("setLink", pString));
205 _Attrib.put("Action", Item.class.getMethod("getAction"),
206 Item.class.getMethod("setActions", pList));
207 _Attrib.put("ActionMark", Item.class.getMethod("getActionMark"),
208 Item.class.getMethod("setActionMark", pBool));
209 _Attrib.put("ActionCursorEnter", Item.class.getMethod("getActionCursorEnter"),
210 Item.class.getMethod("setActionCursorEnter", pList));
211 _Attrib.put("ActionCursorLeave", Item.class.getMethod("getActionCursorLeave"),
212 Item.class.getMethod("setActionCursorLeave", pList));
213 _Attrib.put("ActionEnterFrame", Item.class.getMethod("getActionEnterFrame"),
214 Item.class.getMethod("setActionEnterFrame", pList));
215 _Attrib.put("ActionLeaveFrame", Item.class.getMethod("getActionLeaveFrame"),
216 Item.class.getMethod("setActionLeaveFrame", pList));
217 _Attrib.put("Data", Item.class.getMethod("getData"),
218 Item.class.getMethod("setData", pList));
219 _Attrib.put("Highlight", Item.class.getMethod("getHighlight"),
220 Item.class.getMethod("setHighlight", pBool));
221 _Attrib.put("FillColor", Item.class.getMethod("getFillColor"),
222 Item.class.getMethod("setFillColor", pColor));
223 _Attrib.put("GradientColor", Item.class.getMethod("getGradientColor"),
224 Item.class.getMethod("setGradientColor", pColor));
225 _Attrib.put("GradientAngle", Item.class.getMethod("getGradientAngle"),
226 Item.class.getMethod("setGradientAngle", pInt));
227 _Attrib.put("FillPattern", Item.class.getMethod("getFillPattern"),
228 Item.class.getMethod("setFillPattern", pString));
229 _Attrib.put("Owner", Item.class.getMethod("getOwner"),
230 Item.class.getMethod("setOwner", pString));
231 _Attrib.put("LinkMark", Item.class.getMethod("getLinkMark"),
232 Item.class.getMethod("setLinkMark", pBool));
233 _Attrib.put("LinkFrameset", Item.class.getMethod("getLinkFrameset"),
234 Item.class.getMethod("setLinkFrameset", pString));
235 _Attrib.put("LinkTemplate", Item.class.getMethod("getLinkTemplate"),
236 Item.class.getMethod("setLinkTemplate", pString));
237 _Attrib.put("LinePattern", Item.class.getMethod("getLinePattern"),
238 Item.class.getMethod("setLinePattern", pIntArray));
239 _Attrib.put("Arrow", Item.class.getMethod("getArrow"),
240 Item.class.getMethod("setArrow", pArrow));
241 _Attrib.put("DotType", Item.class.getMethod("getDotType"),
242 Item.class.getMethod("setDotType", pDotType));
243 _Attrib.put("Filled", Item.class.getMethod("getFilled"),
244 Item.class.getMethod("setFilled", pBool));
245 _Attrib.put("Formula", Item.class.getMethod("getFormula"),
246 Item.class.getMethod("setFormula", pString));
247 _Attrib.put("Thickness", Item.class.getMethod("getThickness"),
248 Item.class.getMethod("setThickness", pFloat));
249// _Attrib.put("LineIDs", Item.class.getMethod("getLineIDs"),
250// Item.class.getMethod("setLineIDs", pString));
251// _Attrib.put("ConstraintIDs", Item.class.getMethod("getConstraintIDs"),
252// Item.class.getMethod("setConstraintIDs", pString));
253 _Attrib.put("Size", Item.class.getMethod("getSize"),
254 Item.class.getMethod("setSize", pFloat));
255 _Attrib.put("Save", Item.class.getMethod("getSave"),
256 Item.class.getMethod("setSave", pBool));
257 _Attrib.put("AutoStamp", Item.class.getMethod("getAutoStamp"),
258 Item.class.getMethod("setAutoStamp", pFloatO));
259 _Attrib.put("Width", Item.class.getMethod("getWidthToSave"),
260 Item.class.getMethod("setWidth", pIntO));
261 _Attrib.put("X", null,
262 Item.class.getMethod("setX", pFloat));
263 _Attrib.put("Y", null,
264 Item.class.getMethod("setY", pFloat));
265 _Attrib.put("Tooltip", Item.class.getMethod("getTooltip"),
266 Item.class.getMethod("setTooltip", pString));
267
268 // Text Items
269 _Attrib.put("Family", Text.class.getMethod("getFamily"),
270 Text.class.getMethod("setFamily", pString));
271 _Attrib.put("FontStyle", Text.class.getMethod("getFontStyle"),
272 Text.class.getMethod("setFontStyle", pString));
273 _Attrib.put("Justification", Text.class.getMethod("getJustification"),
274 Text.class.getMethod("setJustification", pJustification));
275 _Attrib.put("AutoWrap", Text.class.getMethod("getAutoWrapToSave"),
276 Text.class.getMethod("setAutoWrap", pBool));
277
278 // Aliases for attribute setting
279 _Attrib.alias("pos", "position");
280 _Attrib.alias("p", "position");
281 _Attrib.alias("xy", "position");
282 _Attrib.alias("a", "action");
283 _Attrib.alias("d", "data");
284 _Attrib.alias("f", "formula");
285 _Attrib.alias("s", "size");
286 _Attrib.alias("l", "link");
287 _Attrib.alias("ab", "anchorbottom");
288 _Attrib.alias("ar", "anchorright");
289 _Attrib.alias("t", "thickness");
290 // _Attrib.alias("c", "color"); // breaks circle creation
291 _Attrib.alias("bgc", "backgroundcolor");
292 _Attrib.alias("bc", "bordercolor");
293 _Attrib.alias("fc", "fillcolor");
294 _Attrib.alias("gc", "gradientcolor");
295 _Attrib.alias("ga", "gradientangle");
296 _Attrib.alias("fp", "fillpattern");
297 _Attrib.alias("lm", "linkmark");
298 _Attrib.alias("am", "actionmark");
299 _Attrib.alias("dt", "dottype");
300 _Attrib.alias("fill", "filled");
301 _Attrib.alias("lp", "linepattern");
302 _Attrib.alias("lf", "linkframeset");
303 _Attrib.alias("lt", "linktemplate");
304 _Attrib.alias("face", "fontstyle");
305 _Attrib.alias("j", "justification");
306 _Attrib.alias("w", "width");
307 _Attrib.alias("as", "autostamp");
308
309
310 } catch (SecurityException e) {
311 // TODO Auto-generated catch block
312 e.printStackTrace();
313 } catch (NoSuchMethodException e) {
314 // TODO Auto-generated catch block
315 e.printStackTrace();
316 }
317 }
318
319 /**
320 * Extracts a list of attributes from the given Item. Any method that
321 * starts with <code>get</code>, takes no arguments and is not found in
322 * the Ignore list will be run, All the attributes are then put into a Text
323 * Item of the form <Name>:<Value> If the value returned by the get method
324 * is null, then the attribute will not be included, unless the name of the
325 * method is found in the AllowNull list.
326 *
327 * @param toExtract
328 * The Object from which to extract the attributes
329 * @return A Text Item containing the extracted Attributes.
330 */
331 public static Item extractAttributes(Object toExtract) {
332
333 // System.out.println(toExtract);
334
335 if (toExtract == null) {
336 return null;
337 }
338
339 // Ensure the lists are populated
340 ensureReady();
341
342 AttributeSet as = null;
343 if(toExtract instanceof Frame) {
344 as = _FrameAttrib;
345 } else if(toExtract instanceof Item) {
346 as = _Attrib;
347 } else {
348 throw new IncorrectTypeException("toExtract", "Item | Frame");
349 }
350
351 // StringBuffer to store all the extracted Attribute:Value pairs
352 StringBuffer attributes = new StringBuffer();
353
354 // iterate through the list of methods
355 for (String prop : as.keys) {
356
357 Attribute a = as.get(prop);
358 // Make sure the classes of the methods match the item
359 if (a != null && a.getter != null && a.getter.getDeclaringClass().isAssignableFrom(toExtract.getClass())) {
360
361 try {
362 String s = getValue(prop, a, toExtract, true);
363
364 if (s == null)
365 continue;
366 // Append the attributes
367 attributes.append(a.displayName)
368 .append(AttributeValuePair.SEPARATOR_STRING)
369 .append(s).append('\n');
370 } catch (Exception e) {
371 // TODO Auto-generated catch block
372 e.printStackTrace();
373 }
374 }
375 }
376
377 // if no attributes were extracted
378 if (attributes.length() <= 0)
379 return null;
380
381 while (attributes.charAt(attributes.length() - 1) == '\n')
382 attributes.delete(attributes.length() - 1, attributes.length());
383
384 // create the text Item
385 Frame current = DisplayIO.getCurrentFrame();
386 Item attribs = current.getStatsTextItem(attributes.toString());
387 return attribs;
388 }
389
390 /**
391 * Gets a string form of the value for a given item get method.
392 * @param method
393 * @param item
394 * @param ignore true if the attributes in the IGNORE list should be ignored
395 * @return
396 */
397 private static String getValue(String name, Attribute a, Object item, boolean ignore) {
398 // assert(method.getName().startsWith("get"));
399
400 Object o = null;
401 try {
402 o = a.getter.invoke(item, (Object[]) null);
403 } catch (IllegalArgumentException e) {
404 e.printStackTrace();
405 return null;
406 } catch (IllegalAccessException e) {
407 e.printStackTrace();
408 return null;
409 } catch (InvocationTargetException e) {
410 e.printStackTrace();
411 return null;
412 }
413
414 if (o == null) {
415 // methods that return null are only included if they
416 // are in the AllowNull list
417 if (_AllowNull.contains(a.getter)) {
418 if (name.equals("color"))
419 o = "default";
420 else if (name.equals("backgroundcolor"))
421 o = "transparent";
422 else if (name.equals("foregroundcolor"))
423 o = "auto";
424 else
425 o = "";
426 } else {
427 return null;
428 }
429 }
430 // skip methods that are in the ignore lists
431 if (ignore && _IgnoreGet.contains(name)) {
432 return null;
433 }
434
435 if (o instanceof Integer) {
436 Integer i = (Integer) o;
437 if (i == Item.DEFAULT_INTEGER)
438 return null;
439 if (a.getter.getName().endsWith("Justification")
440 && ((Justification) o).toString() != null)
441 o = ((Justification) o).toString();
442 // -1 indicates default value
443 else
444 o = i;
445 } else if (o instanceof Float) {
446 if (((Float) o) < -0.0001)
447 return null;
448 // Null indicates default
449 // o = Math.round((Float) o);
450 } else if (o instanceof Double) {
451 // -1 indicates default value
452 if (((Double) o) < 0.0001)
453 return null;
454 } else if (o instanceof Color) {
455 // converts the color to the Expeditee code
456 o = Conversion.getExpediteeColorCode((Color) o);
457 if (o == null)
458 return null;
459 } else if (o instanceof Point) {
460 Point p = (Point) o;
461 o = Math.round(p.getX()) + " " + Math.round(p.getY());
462 } else if (o instanceof Font) {
463 Font f = (Font) o;
464
465 String s = f.getName() + "-";
466 if (f.isPlain())
467 s += "Plain";
468
469 if (f.isBold())
470 s += "Bold";
471
472 if (f.isItalic())
473 s += "Italic";
474
475 s += "-" + f.getSize();
476 o = s;
477 } else if (o instanceof Text) {
478 o = ((Text) o).getFirstLine();
479 } else if (o instanceof List) {
480 List list = (List) o;
481 StringBuffer sb = new StringBuffer();
482 for (Object ob : list)
483 // TODO check that this works ok
484 if (sb.length() == 0) {
485 sb.append(ob);
486 } else {
487 sb.append('\n').append(a.displayName).append(AttributeValuePair.SEPARATOR_STRING).append(ob);
488 }
489 return sb.toString();
490 } else if (o instanceof int[]) {
491 StringBuffer sb = new StringBuffer();
492 int[] values = (int[]) o;
493 for (int i = 0; i < values.length; i++) {
494 sb.append(values[i]).append(' ');
495 }
496 sb.deleteCharAt(sb.length() - 1);
497 o = sb.toString();
498 } else if (o instanceof Boolean) {
499 // true is the default for boolean values
500 if (((Boolean) o).booleanValue())
501 return null;
502 }
503 return o.toString();
504 }
505
506 /**
507 * Attempts to set the attribute in the given attribute: value pair. The
508 * value string should be formatted as follows:
509 * <code> Attribute: Value </code> Multiple values can be used if they are
510 * separated by spaces
511 *
512 * @param toSet
513 * The Item or Frame to set the attribute of
514 * @param attribs
515 * The Text item that contains the list of attributes to set
516 * @return True if the attribute(s) were sucessfully set, false otherwise
517 */
518 public static boolean setAttribute(Object toSet, Text attribs) {
519 return setAttribute(toSet, attribs, 1);
520 }
521
522 public static boolean setAttribute(Object toSet, Text attribs,
523 int minAttributeLength) {
524 // error checking
525 if (toSet == null || attribs == null)
526 return false;
527
528 ensureReady();
529
530 // if(attribs.isAnnotation())
531 // return false;
532
533 // get the list of attribute: value pairs
534 List<String> values = attribs.getTextList();
535 // if no pairs exist, we are done
536 if (values == null || values.size() == 0) {
537 return false;
538 }
539
540 // loop through all attribute: value pairs
541 for (int i = 0; i < values.size(); i++) {
542 AttributeValuePair avp = new AttributeValuePair(values.get(i),
543 false);
544
545 // If the first is not an attribute value pair then don't do
546 // attribute merging
547 if (!avp.hasAttribute()
548 || avp.getAttribute().length() < minAttributeLength)
549 return false;
550
551 // check if the next string is another attribute to merge or a
552 // continuation
553 for (; i < values.size() - 1; i++) {
554 AttributeValuePair nextAvp = new AttributeValuePair(values
555 .get(i + 1), false);
556
557 // if the next String has a colon, then it may be another
558 // attribute
559 if (nextAvp.hasAttribute()) {
560 // if the attribute is the same as v, then it is a
561 // continuation
562 if (nextAvp.getAttribute().equals(avp.getAttribute())) {
563 // strip the attribute from next
564 avp.appendValue(nextAvp.getValue());
565
566 // if the attribute is not the same, then it may be a
567 // new method
568 } else {
569 break;
570 }
571 }
572
573 // v.append("\n").append(next);
574 }
575
576 try {
577 if (!setAttribute(toSet, avp, values.size() > 1)) {
578
579 String stripped = avp.getAttribute();
580 if (!avp.hasPair()) {
581 // This happens when there is an attribute at the start
582 // Then a bunch of plain text
583 return false;
584 } else if (_IgnoreSet.contains(stripped)) {
585 return false;
586 } else {
587 Attribute a = _Attrib.get(stripped);
588 if(a == null || a.setter == null) {
589 return false;
590 }
591 String types = "";
592 for (Class<?> c : a.setter.getParameterTypes()) {
593 types += c.getSimpleName() + " ";
594 }
595 MessageBay.warningMessage("Wrong arguments for: '"
596 + avp.getAttribute() + "' expecting "
597 + types.trim() + " found '" + avp.getValue() + "'");
598 }
599 }
600 } catch (AttributeException e) {
601 MessageBay.errorMessage(e.getMessage());
602 }
603 }
604
605 return true;
606 }
607
608 /**
609 * Sets a single attrubute of a frame or item.
610 *
611 * @param toSet
612 * @param avp
613 * @param isAttributeList
614 * some properties are ignored when attribute list are injected
615 * into an item. These properties are ignored if this param is
616 * true
617 * @return
618 * @throws NoSuchAttributeException
619 */
620 private static boolean setAttribute(Object toSet, AttributeValuePair avp,
621 boolean isAttributeList) throws AttributeException {
622
623 assert (avp.hasAttribute());
624
625 // separate attribute and value from string
626 String attribute = avp.getAttribute().toLowerCase();
627
628 String value = avp.getValue();
629 assert (value != null);
630
631 // Some properties are ignored when multiple attributes are being set on
632 // an item at the same time
633 if (isAttributeList && _IgnoreSet.contains(attribute)) {
634 // System.out.println("Attribute ignored: " + attribute);
635 return true;
636 }
637
638 // Separate multiple values if required
639
640 Attribute a = _Attrib.get(attribute);
641 // if this is not the name of a method, it may be the name of an agent
642 if (a == null || a.setter == null) {
643 // System.out.println("Attrib not found for: " + attribute);
644 return false;
645 }
646
647 // if there are duplicate methods with the same name
648 List<Method> possibles = new LinkedList<Method>();
649 if (a.setter.getDeclaringClass().isInstance(toSet))
650 possibles.add(a.setter);
651 int i = 0;
652 while (_Attrib.containsKey(attribute + i)) {
653 Method m = _Attrib.get(attribute + i).setter;
654 if(m == null) {
655 break;
656 }
657 if (m.getDeclaringClass().isAssignableFrom(toSet.getClass())) {
658 possibles.add(m);
659 }
660 i++;
661 }
662
663 for (Method possible : possibles) {
664 Object current = invokeAttributeGetMethod(avp.getAttribute(), toSet);
665 // find the corresponding get method for this set method
666 // and get the current value of the attribute
667
668 try {
669 Object[] params = Conversion.Convert(possible, value, current);
670
671 try {
672 possible.invoke(toSet, params);
673 return true;
674 } catch (IllegalArgumentException e) {
675 // TODO Auto-generated catch block
676 e.printStackTrace();
677 } catch (IllegalAccessException e) {
678 // TODO Auto-generated catch block
679 e.printStackTrace();
680 } catch (InvocationTargetException e) {
681 MessageBay.displayMessage(toSet.getClass().getSimpleName()
682 + " type does not support that attribute.");
683 // e.printStackTrace();
684 }
685 } catch (NumberFormatException e) {
686
687 }
688 }
689
690 if(possibles.size() == 0){
691 if(invokeAttributeGetMethod(avp.getAttribute(), toSet) == null)
692 throw new NoSuchAttributeException(avp.getAttribute(), toSet.getClass().getSimpleName());
693 throw new ReadOnlyAttributeException(avp.getAttribute(), toSet.getClass().getSimpleName());
694 }
695
696 return false;
697 }
698
699 private static Object invokeAttributeGetMethod(String name, Object toSet) {
700
701 Attribute a = _Attrib.get(name.toLowerCase());
702 if(a == null) {
703 return null;
704 }
705 try {
706 return a.getter.invoke(toSet);
707 } catch (Exception e) {
708 e.printStackTrace();
709 }
710 return null;
711 }
712
713 /**
714 * Replaces the current value for the text item with the new value.
715 *
716 * @param text
717 * the item whos value is to be changed
718 * @param newValue
719 * the new value for the item
720 */
721 public static void replaceValue(Text text, String newValue) {
722 assert (newValue != null);
723
724 AttributeValuePair avp = new AttributeValuePair(text.getText());
725
726 if (avp.getAttribute() == null) {
727 avp.setAttribute(avp.getValue());
728 }
729 avp.setValue(newValue);
730 text.setText(avp.toString());
731 }
732
733 public static String getAttribute(Item item, String attribute) {
734
735 // ensure the lists are populated
736 ensureReady();
737
738 // separate attribute and value from string
739 String lowerAttribute = attribute.trim().toLowerCase();
740
741 Attribute a = _Attrib.get(lowerAttribute);
742 if(a == null) {
743 MessageBay.errorMessage("Could no extract unknown attribute value: " + attribute);
744 return null;
745 }
746 return a.displayName + AttributeValuePair.SEPARATOR_STRING + getValue(lowerAttribute, a, item, false);
747 }
748}
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