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041:
042: /*
043: * File : RoundTripAttributeEventsSink.java
044: * Version : 1.2
045: * Description : Listens for attribute changes in the Describe model
046: * Author : Ashish
047: */
048: package org.netbeans.modules.uml.integration.ide;
049:
050: import java.util.Vector;
051:
052: import org.netbeans.modules.uml.integration.ide.events.ClassInfo;
053: import org.netbeans.modules.uml.integration.ide.events.MemberInfo;
054: import org.netbeans.modules.uml.integration.ide.listeners.IAttributeChangeListener;
055: import org.netbeans.modules.uml.core.metamodel.core.foundation.IElement;
056: import org.netbeans.modules.uml.core.metamodel.infrastructure.coreinfrastructure.IAttribute;
057: import org.netbeans.modules.uml.core.metamodel.infrastructure.coreinfrastructure.IClassifier;
058: import org.netbeans.modules.uml.core.metamodel.infrastructure.coreinfrastructure.INavigableEnd;
059: import org.netbeans.modules.uml.core.metamodel.infrastructure.coreinfrastructure.IStructuralFeature;
060: import org.netbeans.modules.uml.core.roundtripframework.IAssociationEndTransformChangeRequest;
061: import org.netbeans.modules.uml.core.roundtripframework.IAttributeTypeChangeRequest;
062: import org.netbeans.modules.uml.core.roundtripframework.IChangeRequest;
063: import org.netbeans.modules.uml.core.roundtripframework.IRoundTripAttributeEventsSink;
064: import org.netbeans.modules.uml.core.support.umlsupport.IResultCell;
065: import org.netbeans.modules.uml.core.support.umlsupport.Log;
066:
067: /**
068: * Listens for attribute changes in the Describe model.
069: *
070: * Revision History
071: * No. Date Who What
072: * --- ---- --- ----
073: * 1 2002-04-23 Darshan Added debug log statements.
074: * 2 2002-04-25 Darshan Added support for IDE integrations to add
075: * secondary listeners to this.
076: * 3 2002-04-26 Darshan Removed diagnostic messages from second
077: * (post-change) event functions. Also added
078: * calls to fire attribute change events to the
079: * secondary (IDE) listener.
080: * 4 2002-05-03 Darshan Removed the 'Unnamed' hack that attempted to
081: * recognize spurious create attribute events - the
082: * hack wasn't working anyway.
083: * 5 2002-06-22 Darshan Replaced use of IAttribute with
084: * IStructuralFeature, included Sumitabh's fix for
085: * the NullPE when dragging navigable ends.
086: * 6 2002-08-06 Mukta Added code to handle IAttributeTypeChangeRequest
087: *
088: * @author Ashish
089: * @version 1.0
090: */
091: public class RoundTripAttributeEventsSink extends RoundTripSource
092: implements IRoundTripAttributeEventsSink {
093:
094: public void onPreAttributeChangeRequest(IChangeRequest newVal,
095: IResultCell cell) {
096: }
097:
098: public void onAttributeChangeRequest(IChangeRequest newVal,
099: IResultCell cell) {
100:
101: try {
102: //ChangeUtils.say(newVal);
103: fireAttributeChangeEvent(newVal, false);
104: } catch (Exception e) {
105: Log.stackTrace(e);
106: }
107: }
108:
109: protected void fireAttributeChangeEvent(IChangeRequest newVal,
110: boolean beforeChange) {
111: // Get change type
112: int changeType = newVal.getState();
113:
114: IStructuralFeature before = null, after = null;
115:
116: try {
117: before = (IStructuralFeature) newVal.getBefore();
118: after = (IStructuralFeature) newVal.getAfter();
119: } catch (ClassCastException e) {
120: Log.stackTrace(e);
121: }
122:
123: switch (changeType) {
124: case ChangeUtils.CT_CREATE: {
125: if (isValidEvent(after)) {
126: MemberInfo clazz = new MemberInfo(after);
127: fireAttributeAddedEvent(clazz, beforeChange);
128: scheduleForNavigation(after);
129: }
130: break;
131: }
132: case ChangeUtils.CT_DELETE: {
133: if (isValidEvent(before)) {
134: if (newVal.getRequestDetailType() == ChangeUtils.RDT_TRANSFORM) {
135: handleAssociationTransform(newVal, false);
136: } else {
137: MemberInfo clazz = new MemberInfo(before);
138: fireAttributeDeletedEvent(clazz, beforeChange);
139: }
140: }
141: break;
142: }
143: case ChangeUtils.CT_MODIFY: {
144: if (isValidEvent(before) && isValidEvent(after)) {
145: MemberInfo oldC = new MemberInfo(before), newC = new MemberInfo(
146: after);
147: if (oldC.getContainingClass() == null)
148: oldC.setContainingClass(newC.getContainingClass());
149: if (newVal instanceof IAttributeTypeChangeRequest) {
150: IAttributeTypeChangeRequest req = (IAttributeTypeChangeRequest) newVal;
151: IAttribute impactedAttribute = req
152: .getImpactedAttribute();
153: oldC = new MemberInfo(impactedAttribute);
154: newC = new MemberInfo(impactedAttribute);
155: if (oldC.getType().equals(req.getNewTypeName()))
156: oldC.setType(req.getOldTypeName(), oldC
157: .getInitializer());
158: }
159: fireAttributeChangedEvent(oldC, newC, beforeChange);
160: }
161: break;
162: }
163: }
164: }
165:
166: protected void handleAssociationTransform(IChangeRequest newVal,
167: boolean before) {
168: if (newVal instanceof IAssociationEndTransformChangeRequest) {
169: IAssociationEndTransformChangeRequest req = (IAssociationEndTransformChangeRequest) newVal;
170: IElement bef = req.getBefore();
171: IClassifier befCl = req.getOldReferencingClassifier();
172: INavigableEnd befAttr = null;
173: if (bef instanceof INavigableEnd) {
174: befAttr = (INavigableEnd) bef;
175: //ClassInfo beforeClass = new ClassInfo(befCl);
176: ClassInfo beforeClass = ClassInfo.getRefClassInfo(
177: befCl, true);
178: MemberInfo beforeMember = new MemberInfo(beforeClass,
179: befAttr);
180: fireAttributeDeletedEvent(beforeMember, before);
181: }
182: }
183: }
184:
185: protected void fireAttributeAddedEvent(final MemberInfo field,
186: final boolean before) {
187: if (!isValidEvent(field, field.getContainingClass()))
188: return;
189:
190: for (int i = 0; i < changeListeners.size(); ++i) {
191: final IAttributeChangeListener listener = (IAttributeChangeListener) changeListeners
192: .elementAt(i);
193: RoundtripThread r = new RoundtripThread() {
194: public void work() {
195: setDefaultProject(field);
196: listener.attributeAdded(field, before);
197: }
198: };
199: queue(r);
200: }
201: }
202:
203: protected void fireAttributeDeletedEvent(final MemberInfo field,
204: final boolean before) {
205:
206: if (!isValidEvent(field, field.getContainingClass()))
207: return;
208:
209: for (int i = 0; i < changeListeners.size(); ++i) {
210: final IAttributeChangeListener listener = (IAttributeChangeListener) changeListeners
211: .elementAt(i);
212: RoundtripThread r = new RoundtripThread() {
213: public void work() {
214: setDefaultProject(field);
215: listener.attributeDeleted(field, before);
216: }
217: };
218: queue(r);
219: }
220: }
221:
222: protected void fireAttributeChangedEvent(final MemberInfo oldF,
223: final MemberInfo newF, final boolean before) {
224:
225: if (!isValidEvent(oldF, oldF.getContainingClass()))
226: return;
227:
228: for (int i = 0; i < changeListeners.size(); ++i) {
229: final IAttributeChangeListener listener = (IAttributeChangeListener) changeListeners
230: .elementAt(i);
231: RoundtripThread r = new RoundtripThread() {
232: public void work() {
233: setDefaultProject(newF);
234: listener.attributeChanged(oldF, newF, before);
235: }
236: };
237: queue(r);
238: }
239: }
240:
241: public static void addAttributeChangeListener(
242: IAttributeChangeListener listener) {
243: if (listener != null && !changeListeners.contains(listener))
244: changeListeners.add(listener);
245: }
246:
247: public static void removeAttributeChangeListener(
248: IAttributeChangeListener listener) {
249: if (listener != null)
250: changeListeners.remove(listener);
251: }
252:
253: private static Vector changeListeners = new Vector();
254: }
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