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@@ -1,14 +1,33 @@
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+/**
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+ * Copyright (c) 2011 committers of YAKINDU and others.
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+ * All rights reserved. This program and the accompanying materials
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+ * are made available under the terms of the Eclipse Public License v1.0
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+ * which accompanies this distribution, and is available at
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+ * http://www.eclipse.org/legal/epl-v10.html
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+ *
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+ * Contributors:
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+ * committers of YAKINDU - initial API and implementation
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+ */
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package org.yakindu.sct.model.sgraph.resource;
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import java.io.IOException;
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import java.io.InputStream;
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+import java.util.Iterator;
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+import java.util.List;
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import java.util.Map;
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+import org.apache.commons.lang.StringUtils;
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+import org.eclipse.emf.common.notify.Adapter;
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+import org.eclipse.emf.common.notify.Notification;
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+import org.eclipse.emf.common.notify.impl.AdapterImpl;
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+import org.eclipse.emf.common.util.BasicDiagnostic;
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import org.eclipse.emf.common.util.TreeIterator;
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import org.eclipse.emf.common.util.URI;
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import org.eclipse.emf.ecore.EObject;
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+import org.eclipse.emf.ecore.EStructuralFeature;
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import org.eclipse.emf.ecore.util.EcoreUtil;
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import org.eclipse.xtext.naming.IQualifiedNameConverter;
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+import org.eclipse.xtext.naming.IQualifiedNameProvider;
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import org.eclipse.xtext.resource.IEObjectDescription;
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import org.eclipse.xtext.scoping.IGlobalScopeProvider;
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import org.eclipse.xtext.scoping.IScope;
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@@ -21,6 +40,13 @@ import com.google.inject.Inject;
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import de.itemis.xtext.utils.gmf.resource.InjectMembersResource;
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+/**
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+ * Implementation of InjectMembersResource that handles substatecharts set in
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+ * states by qualifiedName
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+ *
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+ * @author benjamin schwertfeger
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+ *
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+ */
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public class SGraphInjectMembersResource extends InjectMembersResource {
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@Inject
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@@ -29,6 +55,9 @@ public class SGraphInjectMembersResource extends InjectMembersResource {
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@Inject
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IQualifiedNameConverter nameConverter;
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+ @Inject
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+ IQualifiedNameProvider nameProvider;
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+
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public SGraphInjectMembersResource(URI uri) {
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super(uri);
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}
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@@ -40,22 +69,67 @@ public class SGraphInjectMembersResource extends InjectMembersResource {
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linkSubStatecharts();
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}
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+ private void linkSubStatecharts(State currentState) {
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+ removeDiagnostics(currentState);
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+ Statechart substatechart = getStatechart(currentState,
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+ currentState.getSubstatechartId());
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+ currentState.setSubstatechart(substatechart);
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+ registerRelinkAdapter(currentState);
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+ }
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+
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+ private void removeDiagnostics(State currentState) {
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+ List<org.eclipse.emf.common.util.Diagnostic> diagnostics = getDiagnostics();
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+ Iterator<org.eclipse.emf.common.util.Diagnostic> iter = diagnostics
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+ .iterator();
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+ while (iter.hasNext()) {
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+ org.eclipse.emf.common.util.Diagnostic d = iter.next();
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+ if (d instanceof BrokenLinkDiagnostic && !d.getData().isEmpty()
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+ && d.getData().get(0) == currentState) {
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+ iter.remove();
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+ }
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+ }
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+
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+ }
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+
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+ /**
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+ * Adds a relinkAdapter that observes the source feature and links the model
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+ * element in case of changes again.
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+ *
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+ * @param object
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+ */
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+ private void registerRelinkAdapter(State object) {
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+ Adapter existingAdapter = EcoreUtil.getExistingAdapter(object,
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+ RelinkAdapter.class);
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+ if (existingAdapter == null) {
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+ object.eAdapters().add(
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+ new RelinkAdapter(object,
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+ SGraphPackage.Literals.STATE__SUBSTATECHART_ID));
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+ }
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+ }
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+
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private void linkSubStatecharts() {
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TreeIterator<EObject> iter = getAllContents();
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while (iter.hasNext()) {
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EObject currentObject = iter.next();
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if (currentObject instanceof State) {
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State state = (State) currentObject;
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- if (state.getSubstatechartId() != null) {
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- Statechart substatechart = getStatechart(state,
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- state.getSubstatechartId());
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- state.setSubstatechart(substatechart);
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+ if (state.getSubstatechartId() == null
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+ && state.getSubstatechart() != null) {
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+ // For compatibility added. If a substate is set, but not
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+ // the ID, the ID is updated.
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+ state.setSubstatechartId(nameProvider
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+ .getFullyQualifiedName(state.getSubstatechart())
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+ .toString());
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}
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+ linkSubStatecharts(state);
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}
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}
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}
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private Statechart getStatechart(EObject context, String substatechartId) {
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+ if (StringUtils.isEmpty(substatechartId)) {
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+ return null;
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+ }
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IScope scope = scopeProvider.getScope(context.eResource(),
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SGraphPackage.Literals.STATE__SUBSTATECHART,
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Predicates.<IEObjectDescription> alwaysTrue());
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@@ -65,13 +139,76 @@ public class SGraphInjectMembersResource extends InjectMembersResource {
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if (statechartDescription != null) {
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Statechart statechart = null;
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statechart = (Statechart) statechartDescription.getEObjectOrProxy();
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- if (statechart != null && statechart.eIsProxy()) {
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+ if (statechart.eIsProxy()) {
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statechart = (Statechart) EcoreUtil
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.resolve(statechart, context);
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}
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return statechart;
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-
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+ } else {
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+ getDiagnostics()
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+ .add(new BrokenLinkDiagnostic(
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+ org.eclipse.emf.common.util.Diagnostic.ERROR,
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+ "source", 0, "Sub statechart '" + substatechartId
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+ + "' not linked", new Object[] { context }));
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}
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return null;
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}
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+
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+ @Override
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+ public void attached(EObject eObject) {
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+ super.attached(eObject);
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+ if (isLoading() || isParsing())
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+ return;
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+ if (eObject instanceof State) {
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+ linkSubStatecharts((State) eObject);
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+ }
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+ }
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+
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+ @Override
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+ public void detached(EObject eObject) {
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+ super.detached(eObject);
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+ Adapter existingAdapter = EcoreUtil.getExistingAdapter(eObject,
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+ RelinkAdapter.class);
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+ if (existingAdapter != null) {
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+ eObject.eAdapters().remove(existingAdapter);
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+ }
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+ }
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+
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+ private final class BrokenLinkDiagnostic extends BasicDiagnostic {
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+ public BrokenLinkDiagnostic(int severity, String source, int code,
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+ String message, Object[] data) {
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+ super(severity, source, code, message, data);
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+ }
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+ }
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+
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+ /**
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+ * ReparseAdapter listens for feature changes and reparses the whole model.
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+ *
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+ * @author benjamin schwertfeger
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+ *
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+ */
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+ private final class RelinkAdapter extends AdapterImpl {
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+ public final EStructuralFeature expressionFeature;
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+
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+ private RelinkAdapter(State currentObject,
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+ EStructuralFeature expressionFeature) {
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+ this.expressionFeature = expressionFeature;
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+ }
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+
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+ @Override
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+ public void notifyChanged(Notification msg) {
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+ if (msg.getFeature() == expressionFeature) {
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+ if (!(msg.getNotifier() instanceof State)) {
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+ throw new IllegalStateException(
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+ "Changed StatechartID should only rise for states");
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+ }
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+ linkSubStatecharts((State) msg.getNotifier());
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+ }
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+ }
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+
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+ @Override
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+ public boolean isAdapterForType(Object type) {
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+ return RelinkAdapter.class == type;
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+ }
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+ }
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}
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benjamin.schwertfeger@gmail.com