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Package: RuleService
RuleService
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| RuleService() |
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| canOverrideParent(boolean, boolean) |
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| checkDryRun(Map) |
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| childContextAdded(VElement, EMFFormsViewContext) |
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| childContextDisposed(EMFFormsViewContext) |
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| contextDispose() |
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| contextInitialised() |
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| dispose() |
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| evalAffectedRenderables(RuleRegistry, Class, UniqueSetting) |
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| evalAffectedRenderables(RuleRegistry, Class, UniqueSetting, Map) |
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| evalAffectedRenderables(RuleRegistry, Class, UniqueSetting, boolean, Map) |
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| evalEnable(UniqueSetting) |
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| evalShow(UniqueSetting) |
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| getDisabledRenderables(Map, UniqueSetting) |
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| getHiddenRenderables(Map, UniqueSetting) |
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| getPriority() |
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| getRule(Class, VElement) |
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| getRules(VElement) |
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| init(RuleRegistry, Class, EObject, EObject) |
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| instantiate(ViewModelContext) |
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| isDisableRule(Rule) |
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| isEnableRule(Rule) |
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| isHideRule(Rule) |
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| isOpposite(Rule) |
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| isShowRule(Rule) |
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| propagateChanges(boolean, boolean, Rule, VElement) |
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| register(RuleRegistry, Class, EObject, EObject) |
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| resetToEnabled(VElement) |
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| resetToVisible(VElement) |
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| ruleApplies(Rule, Class) |
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| updateStateMap(Map, VElement, boolean, boolean, Class) |
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Coverage
1: /*******************************************************************************
2: * Copyright (c) 2011-2013 EclipseSource Muenchen GmbH and others.
3: *
4: * All rights reserved. This program and the accompanying materials
5: * are made available under the terms of the Eclipse Public License 2.0
6: * which accompanies this distribution, and is available at
7: * https://www.eclipse.org/legal/epl-2.0/
8: *
9: * SPDX-License-Identifier: EPL-2.0
10: *
11: * Contributors:
12: * Edgar Mueller - initial API and implementation
13: * Johannes Faltermeier - registry setting based instead of feature based
14: ******************************************************************************/
15: package org.eclipse.emf.ecp.view.internal.rule;
16:
17: import java.util.Arrays;
18: import java.util.Collection;
19: import java.util.Collections;
20: import java.util.HashMap;
21: import java.util.HashSet;
22: import java.util.LinkedHashMap;
23: import java.util.LinkedHashSet;
24: import java.util.List;
25: import java.util.Map;
26: import java.util.Set;
27:
28: import org.eclipse.emf.common.notify.Notifier;
29: import org.eclipse.emf.common.util.TreeIterator;
30: import org.eclipse.emf.ecore.EClass;
31: import org.eclipse.emf.ecore.EObject;
32: import org.eclipse.emf.ecore.EStructuralFeature;
33: import org.eclipse.emf.ecore.EStructuralFeature.Setting;
34: import org.eclipse.emf.ecore.InternalEObject;
35: import org.eclipse.emf.ecp.common.spi.UniqueSetting;
36: import org.eclipse.emf.ecp.view.spi.context.ViewModelContext;
37: import org.eclipse.emf.ecp.view.spi.context.ViewModelService;
38: import org.eclipse.emf.ecp.view.spi.model.ModelChangeAddRemoveListener;
39: import org.eclipse.emf.ecp.view.spi.model.ModelChangeListener;
40: import org.eclipse.emf.ecp.view.spi.model.ModelChangeNotification;
41: import org.eclipse.emf.ecp.view.spi.model.VAttachment;
42: import org.eclipse.emf.ecp.view.spi.model.VDomainModelReference;
43: import org.eclipse.emf.ecp.view.spi.model.VElement;
44: import org.eclipse.emf.ecp.view.spi.model.VFeaturePathDomainModelReference;
45: import org.eclipse.emf.ecp.view.spi.model.VViewPackage;
46: import org.eclipse.emf.ecp.view.spi.rule.model.Condition;
47: import org.eclipse.emf.ecp.view.spi.rule.model.EnableRule;
48: import org.eclipse.emf.ecp.view.spi.rule.model.LeafCondition;
49: import org.eclipse.emf.ecp.view.spi.rule.model.Rule;
50: import org.eclipse.emf.ecp.view.spi.rule.model.ShowRule;
51: import org.eclipse.emfforms.spi.core.services.view.EMFFormsContextListener;
52: import org.eclipse.emfforms.spi.core.services.view.EMFFormsViewContext;
53:
54: /**
55: * Rule service that, once instantiated, maintains and synchronizes
56: * the state of a rule with its {@link VElement}.
57: *
58: * @author emueller
59: * @author jfaltermeier
60: */
61: public class RuleService implements ViewModelService, EMFFormsContextListener {
62:
63: private static final String DOMAIN_MODEL_NULL_EXCEPTION = "Domain model must not be null."; //$NON-NLS-1$
64: private static final String VIEW_MODEL_NULL_EXCEPTION = "View model must not be null."; //$NON-NLS-1$
65: private ViewModelContext context;
66: private ModelChangeListener domainChangeListener;
67: private ModelChangeAddRemoveListener viewChangeListener;
68:
69: private RuleRegistry<EnableRule> enableRuleRegistry;
70: private RuleRegistry<ShowRule> showRuleRegistry;
71: private ConditionServiceManager conditionServiceManager;
72:
73: /**
74: * Instantiates the rule service.
75: */
76: public RuleService() {
77: }
78:
79: /**
80: * {@inheritDoc}
81: *
82: * @see org.eclipse.emf.ecp.view.spi.context.ViewModelService#instantiate(org.eclipse.emf.ecp.view.spi.context.ViewModelContext)
83: */
84: @Override
85: public void instantiate(final ViewModelContext context) {
86: this.context = context;
87: enableRuleRegistry = new RuleRegistry<EnableRule>(context);
88: showRuleRegistry = new RuleRegistry<ShowRule>(context);
89: context.registerEMFFormsContextListener(this);
90: conditionServiceManager = context.getService(ConditionServiceManager.class);
91: }
92:
93: private void resetToVisible(VElement renderable) {
94:• if (renderable == null) {
95: return;
96: }
97: final Map<VElement, Boolean> maps = new LinkedHashMap<VElement, Boolean>();
98: updateStateMap(maps, renderable, false, true, ShowRule.class);
99:• for (final VElement vElement : maps.keySet()) {
100: vElement.setVisible(maps.get(vElement));
101: }
102: }
103:
104: private void resetToEnabled(VElement renderable) {
105:• if (renderable == null) {
106: return;
107: }
108: final Map<VElement, Boolean> maps = new LinkedHashMap<VElement, Boolean>();
109: updateStateMap(maps, renderable, false, true, EnableRule.class);
110:• for (final VElement vElement : maps.keySet()) {
111: vElement.setEnabled(maps.get(vElement));
112: }
113: }
114:
115: private static Collection<Rule> getRules(VElement renderable) {
116: final Map<Class<? extends Rule>, Rule> rules = new HashMap<Class<? extends Rule>, Rule>();
117:• for (final VAttachment attachment : renderable.getAttachments()) {
118:• if (Rule.class.isInstance(attachment)) {
119: final Rule rule = (Rule) attachment;
120:• if (!rules.containsKey(rule.getClass())) {
121: rules.put(rule.getClass(), rule);
122: }
123: }
124: }
125: return rules.values();
126: }
127:
128: private static <T extends Rule> T getRule(Class<T> ruleType, VElement renderable) {
129: final Collection<Rule> rules = getRules(renderable);
130:• for (final Rule rule : rules) {
131:• if (ruleType.isInstance(rule)) {
132: return ruleType.cast(rule);
133: }
134: }
135: return null;
136: }
137:
138: private <T extends Rule> void updateStateMap(Map<VElement, Boolean> stateMap, VElement renderable,
139: boolean isOpposite, boolean evalResult, Class<T> ruleType) {
140:
141:• if (!stateMap.containsKey(renderable)) {
142: final Collection<Rule> rules = getRules(renderable);
143: boolean didUpdate = false;
144:• for (final Rule rule : rules) {
145:• if (rule != null && ruleApplies(rule, ruleType)) {
146: final Condition condition = rule.getCondition();
147:• if (condition != null && canOverrideParent(evalResult, isOpposite)) {
148: final boolean evaluate = conditionServiceManager.evaluate(condition, context.getDomainModel());
149:• stateMap.put(renderable, isOpposite(rule) ? !evaluate : evaluate);
150: didUpdate = true;
151: }
152: }
153: }
154: // use result of parent
155:• if (!didUpdate) {
156:• stateMap.put(renderable, isOpposite ? !evalResult : evalResult);
157: }
158: } else {
159: final Boolean currentState = stateMap.get(renderable).booleanValue();
160:• if (currentState) {
161:• stateMap.put(renderable, isOpposite ? !evalResult : evalResult);
162: }
163: }
164:
165:• for (final EObject childContent : renderable.eContents()) {
166:• if (childContent instanceof VElement) {
167: updateStateMap(stateMap, (VElement) childContent, isOpposite, evalResult, ruleType);
168: }
169: }
170: }
171:
172: private static boolean canOverrideParent(boolean evalResult, boolean isOpposite) {
173:• return evalResult && !isOpposite || !evalResult && isOpposite;
174: }
175:
176: private static <T extends Rule> boolean ruleApplies(Rule rule, Class<T> ruleType) {
177: return Arrays.asList(rule.getClass().getInterfaces()).contains(ruleType);
178: }
179:
180: private static boolean isOpposite(Rule rule) {
181:• return isHideRule(rule) || isDisableRule(rule);
182: }
183:
184: private <T extends Rule> Map<VElement, Boolean> evalAffectedRenderables(RuleRegistry<T> registry,
185: Class<T> ruleType, UniqueSetting setting, boolean isDryRun, Map<Setting, Object> possibleValues) {
186:
187: final Map<VElement, Boolean> map = new LinkedHashMap<VElement, Boolean>();
188:
189:• for (final Map.Entry<T, VElement> ruleAndRenderable : registry.getAffectedRenderables(
190: setting).entrySet()) {
191:
192: final Rule rule = ruleAndRenderable.getKey();
193:
194: final VElement renderable = ruleAndRenderable.getValue();
195: // whether the value changed at all, if newValue has been provided
196: boolean hasChanged = true;
197:
198:• if (!ruleType.isInstance(rule)) {
199: continue;
200: }
201:
202:• if (isDryRun) {
203:
204: hasChanged = checkDryRun(possibleValues);
205:
206: }
207:
208: boolean result = false;
209: boolean updateMap = true;
210:• if (rule.getCondition() == null) {
211: result = true;
212:• } else if (isDryRun && hasChanged) {
213: result = conditionServiceManager.evaluateChangedValues(rule.getCondition(), context.getDomainModel(),
214: possibleValues);
215:• } else if (!isDryRun) {
216: result = conditionServiceManager.evaluate(rule.getCondition(), context.getDomainModel());
217: } else {
218: updateMap = false;
219: }
220:• final boolean isOposite = isDisableRule(rule) || isHideRule(rule);
221: updateMap &= propagateChanges(result, isOposite, rule, renderable);
222:• if (updateMap) {
223: updateStateMap(map, renderable, isOposite, result, ruleType);
224: }
225: }
226:
227: return map;
228: }
229:
230: private static boolean propagateChanges(boolean result, boolean isOposite, Rule rule, VElement renderable) {
231:• if (result && !isOposite || isOposite && !result) {
232:• if (ShowRule.class.isInstance(rule)) {
233:• if (isOposite && result != renderable.isVisible()) {
234: return false;
235:• } else if (!isOposite && result == renderable.isVisible()) {
236: return false;
237: }
238:• } else if (EnableRule.class.isInstance(rule)) {
239:• if (isOposite && result != renderable.isEnabled()) {
240: return false;
241:• } else if (!isOposite && result == renderable.isEnabled()) {
242: return false;
243: }
244: }
245: }
246: return true;
247: }
248:
249: private static boolean checkDryRun(Map<Setting, Object> possibleValues) {
250: boolean hasChanged = true;
251:• for (final Setting setting : possibleValues.keySet()) {
252: final EObject parent = setting.getEObject();
253: final EStructuralFeature feature = setting.getEStructuralFeature();
254: final EClass attributeClass = feature.getEContainingClass();
255:• if (!attributeClass.isInstance(parent)) {
256: continue;
257: }
258: final Object actualValue = parent.eGet(feature);
259: final Object newValue = possibleValues.get(setting);
260:• if (!feature.isMany()) {
261:• if (newValue == null) {
262:• hasChanged &= actualValue == null;
263: } else {
264:• hasChanged &= !newValue.equals(actualValue);
265: }
266: } else {
267: // EMF API
268: @SuppressWarnings("unchecked")
269: final List<Object> objects = (List<Object>) actualValue;
270: @SuppressWarnings("unchecked")
271: final List<Object> newValues = (List<Object>) newValue;
272:• if (objects.size() == newValues.size()) {
273: boolean sameEntries = true;
274:• for (final Object newValueListEntry : newValues) {
275:• if (!objects.contains(newValueListEntry)) {
276: sameEntries = false;
277: }
278: }
279:• hasChanged &= !sameEntries;
280: } else {
281: hasChanged = true;
282: }
283: }
284: }
285: return hasChanged;
286: }
287:
288: private <T extends Rule> Map<VElement, Boolean> evalAffectedRenderables(RuleRegistry<T> registry,
289: Class<T> ruleType, UniqueSetting setting, Map<Setting, Object> possibleValues) {
290: return evalAffectedRenderables(registry, ruleType, setting, true, possibleValues);
291: }
292:
293: private <T extends Rule> Map<VElement, Boolean> evalAffectedRenderables(RuleRegistry<T> registry,
294: Class<T> ruleType, UniqueSetting setting) {
295: final Map<Setting, Object> changedValues = Collections.emptyMap();
296: return evalAffectedRenderables(registry, ruleType, setting, false, changedValues);
297: }
298:
299: private static boolean isDisableRule(Rule rule) {
300:• if (isEnableRule(rule)) {
301: final EnableRule enableRule = (EnableRule) rule;
302: return enableRule.isDisable();
303: }
304:
305: return false;
306: }
307:
308: private static boolean isHideRule(Rule rule) {
309:• if (isShowRule(rule)) {
310: final ShowRule showRule = (ShowRule) rule;
311: return showRule.isHide();
312: }
313:
314: return false;
315: }
316:
317: private static boolean isShowRule(Rule rule) {
318: return rule instanceof ShowRule;
319: }
320:
321: private <T extends Rule> void evalShow(UniqueSetting setting) {
322:
323: final Map<VElement, Boolean> visibleMap = evalAffectedRenderables(showRuleRegistry, ShowRule.class,
324: setting);
325: final Set<VElement> toBeVisible = new LinkedHashSet<VElement>();
326: final Set<VElement> toBeInvisible = new LinkedHashSet<VElement>();
327:• for (final Map.Entry<VElement, Boolean> e : visibleMap.entrySet()) {
328: final Boolean isVisible = e.getValue();
329: final VElement renderable = e.getKey();
330:• if (isVisible) {
331: toBeVisible.add(renderable);
332: } else {
333: toBeInvisible.add(renderable);
334: }
335: }
336:
337:• for (final VElement vElement : toBeInvisible) {
338: vElement.setVisible(false);
339: }
340:• for (final VElement vElement : toBeVisible) {
341: vElement.setVisible(true);
342: }
343: }
344:
345: private <T extends Rule> void evalEnable(UniqueSetting setting) {
346:
347: final Map<VElement, Boolean> enabledMap = evalAffectedRenderables(enableRuleRegistry, EnableRule.class,
348: setting);
349:
350:• for (final Map.Entry<VElement, Boolean> e : enabledMap.entrySet()) {
351: e.getKey().setEnabled(e.getValue());
352: }
353: }
354:
355: private <T extends Rule> Set<UniqueSetting> init(RuleRegistry<T> registry, Class<T> ruleType,
356: EObject viewModel,
357: EObject domainObject) {
358: final TreeIterator<EObject> iterator = viewModel.eAllContents();
359: final Set<UniqueSetting> relevantSettings = new LinkedHashSet<UniqueSetting>();
360: relevantSettings.addAll(register(registry, ruleType, domainObject, viewModel));
361:
362:• while (iterator.hasNext()) {
363: final EObject content = iterator.next();
364: relevantSettings.addAll(register(registry, ruleType, domainObject, content));
365: }
366: return relevantSettings;
367: }
368:
369: private <T extends Rule> Set<UniqueSetting> register(RuleRegistry<T> registry, Class<T> ruleType,
370: EObject domainObject, final EObject viewModel) {
371: final Set<UniqueSetting> result = new HashSet<UniqueSetting>();
372:• if (viewModel instanceof VElement) {
373: final VElement renderable = (VElement) viewModel;
374: final T rule = getRule(ruleType, renderable);
375:• if (rule != null) {
376: result.addAll(registry.register(renderable, rule, rule.getCondition(), domainObject));
377: }
378: }
379: return result;
380: }
381:
382: /**
383: * Returns all {@link VElement}s, that would we disabled if {@code possibleValues} would be set for the given
384: * {@code setting}s.
385: *
386: * @param possibleValues
387: * a mapping of settings to their would-be new value
388: * @param setting the changed setting
389: * @return the hidden {@link VElement}s and their new state if {@code possibleValues} would be set
390: */
391: public Map<VElement, Boolean> getDisabledRenderables(Map<Setting, Object> possibleValues,
392: UniqueSetting setting) {
393:
394: return evalAffectedRenderables(enableRuleRegistry,
395: EnableRule.class, setting, possibleValues);
396: }
397:
398: /**
399: * Returns all {@link VElement}s, that would we hidden if {@code possibleValues} would be set for the given
400: * {@code setting}s.
401: *
402: * @param possibleValues
403: * a mapping of settings to their would-be new value
404: * @param setting the setting that was changed
405: * @return the hidden {@link VElement}s and their new state if {@code possibleValues} would be set
406: */
407: public Map<VElement, Boolean> getHiddenRenderables(Map<Setting, Object> possibleValues, UniqueSetting setting) {
408:
409: return evalAffectedRenderables(showRuleRegistry,
410: ShowRule.class, setting, possibleValues);
411: }
412:
413: /**
414: * Dispose.
415: */
416: @Override
417: public void dispose() {
418: // dispose stuff
419: context.unregisterEMFFormsContextListener(this);
420: context.unregisterDomainChangeListener(domainChangeListener);
421: context.unregisterViewChangeListener(viewChangeListener);
422: enableRuleRegistry.dispose();
423: showRuleRegistry.dispose();
424: }
425:
426: private static boolean isEnableRule(Rule rule) {
427: return EnableRule.class.isInstance(rule);
428: }
429:
430: /**
431: * {@inheritDoc}
432: *
433: * @see org.eclipse.emf.ecp.view.spi.context.ViewModelService#getPriority()
434: */
435: @Override
436: public int getPriority() {
437: return 1;
438: }
439:
440: /**
441: * Lister of the rule service reacting to view model changes.
442: */
443: private final class RuleServiceViewChangeListener implements ModelChangeAddRemoveListener {
444: private final ViewModelContext context;
445:
446: /**
447: * @param context
448: */
449: private RuleServiceViewChangeListener(ViewModelContext context) {
450: this.context = context;
451: }
452:
453: @Override
454: public void notifyChange(ModelChangeNotification notification) {
455: if (VFeaturePathDomainModelReference.class.isInstance(notification.getNotifier())) {
456: if (notification.getStructuralFeature() == VViewPackage.eINSTANCE
457: .getDomainModelReference_ChangeListener()) {
458: return;
459: }
460: final VDomainModelReference domainModelReference = VDomainModelReference.class.cast(notification
461: .getNotifier());
462: final EObject eContainer = domainModelReference.eContainer();
463: if (!LeafCondition.class.isInstance(eContainer)) {
464: return;
465: }
466: final Condition condition = Condition.class.cast(eContainer);
467: enableRuleRegistry.removeCondition(condition);
468: showRuleRegistry.removeCondition(condition);
469: EObject parent = condition.eContainer();
470: while (parent != null && !Rule.class.isInstance(parent)) {
471: parent = parent.eContainer();
472: }
473: if (parent == null) {
474: return;
475: }
476: if (!Rule.class.isInstance(parent)) {
477: return;
478: }
479: final Rule rule = Rule.class.cast(parent);
480: final VElement renderable = VElement.class.isInstance(rule.eContainer())
481: ? VElement.class.cast(rule.eContainer())
482: : null;
483:
484: if (renderable == null) {
485: return;
486: }
487: reevaluateRule(condition, rule, renderable);
488: }
489: }
490:
491: private void reevaluateRule(final Condition condition, final Rule rule, final VElement renderable) {
492: if (isEnableRule(rule)) {
493: if (enableRuleRegistry.register(renderable, (EnableRule) rule, condition,
494: context.getDomainModel()).isEmpty()) {
495: renderable.setEnabled(true);
496: } else {
497: resetToEnabled(renderable);
498: }
499: }
500: if (isShowRule(rule)) {
501: if (showRuleRegistry.register(renderable, (ShowRule) rule, condition, context.getDomainModel())
502: .isEmpty()) {
503: renderable.setVisible(true);
504: } else {
505: resetToVisible(renderable);
506: }
507: }
508: }
509:
510: @Override
511: public void notifyAdd(Notifier notifier) {
512: if (VElement.class.isInstance(notifier)) {
513: register(enableRuleRegistry, EnableRule.class, context.getDomainModel(),
514: VElement.class.cast(notifier));
515: register(showRuleRegistry, ShowRule.class, context.getDomainModel(), VElement.class.cast(notifier));
516:
517: final Collection<Rule> rules = getRules(VElement.class.cast(notifier));
518: if (rules.isEmpty()) {
519: return;
520: }
521: for (final Rule rule : rules) {
522: final Set<UniqueSetting> settings = conditionServiceManager.getConditionSettings(
523: rule.getCondition(),
524: context.getDomainModel());
525: for (final UniqueSetting setting : settings) {
526: evalEnable(setting);
527: evalShow(setting);
528: }
529: }
530:
531: } else if (EnableRule.class.isInstance(notifier)) {
532: final Set<UniqueSetting> register = register(enableRuleRegistry, EnableRule.class,
533: context.getDomainModel(),
534: EnableRule.class.cast(notifier).eContainer());
535:
536: for (final UniqueSetting setting : register) {
537: evalEnable(setting);
538: }
539:
540: } else if (ShowRule.class.isInstance(notifier)) {
541: final Set<UniqueSetting> register = register(showRuleRegistry, ShowRule.class,
542: context.getDomainModel(), ShowRule.class.cast(notifier)
543: .eContainer());
544:
545: for (final UniqueSetting setting : register) {
546: evalShow(setting);
547: }
548:
549: }
550: }
551:
552: @Override
553: public void notifyRemove(Notifier notifier) {
554: if (VElement.class.isInstance(notifier)) {
555: final VElement renderable = VElement.class.cast(notifier);
556: showRuleRegistry.removeRenderable(renderable);
557: enableRuleRegistry.removeRenderable(renderable);
558: } else if (Condition.class.isInstance(notifier)) {
559: final Condition condition = Condition.class.cast(notifier);
560: resetToVisible(showRuleRegistry.removeCondition(condition));
561:
562: resetToEnabled(enableRuleRegistry
563: .removeCondition(condition));
564:
565: } else if (ShowRule.class.isInstance(notifier)) {
566: final ShowRule showRule = ShowRule.class.cast(notifier);
567: resetToVisible(showRuleRegistry.removeRule(showRule));
568:
569: } else if (EnableRule.class.isInstance(notifier)) {
570: final EnableRule enableRule = EnableRule.class.cast(notifier);
571: final VElement removeRule = enableRuleRegistry.removeRule(enableRule);
572: resetToEnabled(removeRule);
573:
574: }
575: }
576: }
577:
578: /**
579: * {@inheritDoc}
580: *
581: * @see org.eclipse.emfforms.spi.core.services.view.EMFFormsContextListener#childContextAdded(org.eclipse.emf.ecp.view.spi.model.VElement,
582: * org.eclipse.emfforms.spi.core.services.view.EMFFormsViewContext)
583: */
584: @Override
585: public void childContextAdded(VElement parentElement, EMFFormsViewContext childContext) {
586: // do nothing
587: }
588:
589: /**
590: * {@inheritDoc}
591: *
592: * @see org.eclipse.emfforms.spi.core.services.view.EMFFormsContextListener#childContextDisposed(org.eclipse.emfforms.spi.core.services.view.EMFFormsViewContext)
593: */
594: @Override
595: public void childContextDisposed(EMFFormsViewContext childContext) {
596: // do nothing
597: }
598:
599: /**
600: * {@inheritDoc}
601: *
602: * @see org.eclipse.emfforms.spi.core.services.view.EMFFormsContextListener#contextInitialised()
603: */
604: @Override
605: public void contextInitialised() {
606: final VElement view = context.getViewModel();
607: domainChangeListener = new ModelChangeListener() {
608:
609: @Override
610: public void notifyChange(ModelChangeNotification notification) {
611: if (notification.getStructuralFeature() == null) {
612: return;
613: }
614: // add && reference && !containment
615: final Setting setting = ((InternalEObject) notification.getNotifier()).eSetting(notification
616: .getStructuralFeature());
617: evalShow(UniqueSetting.createSetting(setting));
618: evalEnable(UniqueSetting.createSetting(setting));
619: }
620: };
621: context.registerDomainChangeListener(domainChangeListener);
622: viewChangeListener = new RuleServiceViewChangeListener(context);
623: context.registerViewChangeListener(viewChangeListener);
624:
625:• if (view == null) {
626: throw new IllegalStateException(VIEW_MODEL_NULL_EXCEPTION);
627: }
628:
629: final EObject domainModel = context.getDomainModel();
630:
631:• if (domainModel == null) {
632: throw new IllegalStateException(DOMAIN_MODEL_NULL_EXCEPTION);
633: }
634:
635: final Set<UniqueSetting> enableSettings = init(enableRuleRegistry, EnableRule.class, view, domainModel);
636: final Set<UniqueSetting> showSettings = init(showRuleRegistry, ShowRule.class, view, domainModel);
637:• for (final UniqueSetting setting : enableSettings) {
638: evalEnable(setting);
639: }
640:• for (final UniqueSetting setting : showSettings) {
641: evalShow(setting);
642: }
643: }
644:
645: /**
646: * {@inheritDoc}
647: *
648: * @see org.eclipse.emfforms.spi.core.services.view.EMFFormsContextListener#contextDispose()
649: */
650: @Override
651: public void contextDispose() {
652: // do nothing
653: }
654: }