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[2085] Group diagrams by view definition in the Views Explorer
Bug: #2085 Signed-off-by: Florian ROUËNÉ <florian.rouene@obeosoft.com>
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‎CHANGELOG.adoc‎

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@@ -160,6 +160,8 @@ Make sure diagnostics are sorted according to their validated element and its co
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- https://github.com/eclipse-syson/syson/issues/2057[#2057] [diagrams] Add the support for empty value for multiplicity in the ANTLR grammar.
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- https://github.com/eclipse-syson/syson/issues/2053[#2053] [diagrams] The graphical `ForkNode` and `JoinNode` now use `RectangularNodeStyleDescription` and are restricted to horizontal resizing.
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Consequently, their entire footprint is filled with black, ensuring that all incoming and outgoing edges maintain a valid connection point.
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- https://github.com/eclipse-syson/syson/issues/2085[#2085] [views-explorer] Adapt views explorer to group diagram representations by view definition.
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=== New features
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‎backend/application/syson-application-configuration/src/main/java/org/eclipse/syson/application/views/explorer/SysONViewsExplorerContentServiceDelegate.java‎

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/*******************************************************************************
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* Copyright (c) 2026 Obeo.
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* This program and the accompanying materials
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* are made available under the terms of the Eclipse Public License v2.0
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* which accompanies this distribution, and is available at
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* https://www.eclipse.org/legal/epl-2.0/
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*
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* SPDX-License-Identifier: EPL-2.0
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*
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* Contributors:
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* Obeo - initial API and implementation
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*******************************************************************************/
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package org.eclipse.syson.application.views.explorer;
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import java.util.AbstractMap;
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import java.util.List;
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import java.util.Map;
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import java.util.Objects;
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import java.util.Optional;
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import java.util.stream.Collectors;
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import org.eclipse.sirius.components.core.api.IEditingContext;
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import org.eclipse.sirius.components.core.api.IObjectSearchService;
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import org.eclipse.sirius.components.core.api.IURLParser;
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import org.eclipse.sirius.components.diagrams.description.DiagramDescription;
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import org.eclipse.sirius.components.representations.IRepresentationDescription;
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import org.eclipse.sirius.web.application.views.viewsexplorer.services.RepresentationDescriptionType;
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import org.eclipse.sirius.web.application.views.viewsexplorer.services.RepresentationKind;
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import org.eclipse.sirius.web.application.views.viewsexplorer.services.api.IViewsExplorerContentServiceDelegate;
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import org.eclipse.sirius.web.domain.boundedcontexts.representationdata.RepresentationMetadata;
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import org.eclipse.syson.sysml.ViewDefinition;
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import org.eclipse.syson.sysml.ViewUsage;
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import org.springframework.stereotype.Service;
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/**
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* Customize the retrieval of the content of the views explorer for SysON.
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*
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* @author frouene
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*/
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@Service
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public class SysONViewsExplorerContentServiceDelegate implements IViewsExplorerContentServiceDelegate {
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private final IURLParser urlParser;
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private final IObjectSearchService objectSearchService;
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public SysONViewsExplorerContentServiceDelegate(IURLParser urlParser, IObjectSearchService objectSearchService) {
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this.urlParser = Objects.requireNonNull(urlParser);
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this.objectSearchService = Objects.requireNonNull(objectSearchService);
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}
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@Override
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public boolean canHandle(IEditingContext editingContext) {
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return true;
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}
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@Override
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public List<RepresentationKind> getContents(IEditingContext editingContext, List<RepresentationMetadata> representationMetadata, Map<String, IRepresentationDescription> representationDescriptions) {
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var descriptionTypes = this.groupByDescriptionType(editingContext, representationMetadata, representationDescriptions);
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return this.groupByKind(descriptionTypes);
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}
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private List<RepresentationDescriptionType> groupByDescriptionType(IEditingContext editingContext, List<RepresentationMetadata> allMetadata,
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Map<String, IRepresentationDescription> allDescriptions) {
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var metadataToViewDefinitionMap = allMetadata.stream()
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.flatMap(metadata ->
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this.objectSearchService.getObject(editingContext, metadata.getTargetObjectId())
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.stream()
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.filter(ViewUsage.class::isInstance)
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.map(ViewUsage.class::cast)
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.map(ViewUsage::getViewDefinition)
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.map(viewDefinition -> new AbstractMap.SimpleEntry<>(metadata, viewDefinition))
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)
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.collect(Collectors.toMap(
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Map.Entry::getKey,
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Map.Entry::getValue,
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(existing, replacement) -> existing
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));
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Map<ViewDefinition, List<RepresentationMetadata>> viewDefinitionToMetadataMap = allMetadata.stream()
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.collect(Collectors.groupingBy(metadataToViewDefinitionMap::get));
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return viewDefinitionToMetadataMap.entrySet().stream()
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.map(entry -> {
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ViewDefinition viewDefinition = entry.getKey();
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String viewDefinitionName = viewDefinition.getDeclaredShortName();
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RepresentationMetadata firstMetadata = entry.getValue().get(0);
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String descriptionId = firstMetadata.getDescriptionId();
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IRepresentationDescription representationDescription = allDescriptions.get(descriptionId);
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return Optional.ofNullable(representationDescription)
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.map(rd -> {
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if (rd instanceof DiagramDescription) {
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return new RepresentationDescriptionType(viewDefinitionName, rd, entry.getValue());
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}
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return new RepresentationDescriptionType(descriptionId, rd, entry.getValue());
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});
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})
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.flatMap(Optional::stream)
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.toList();
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}
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private List<RepresentationKind> groupByKind(List<RepresentationDescriptionType> descriptionTypes) {
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return descriptionTypes.stream()
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.collect(Collectors.groupingBy(descType -> descType.representationsMetadata().get(0).getKind()))
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.entrySet().stream()
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.map(entry -> {
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var kindId = entry.getKey();
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var kindName = this.urlParser.getParameterValues(kindId).get("type").get(0);
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return new RepresentationKind(kindId, kindName, entry.getValue());
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})
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.toList();
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}
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}

‎backend/application/syson-application-configuration/src/main/java/org/eclipse/syson/application/views/explorer/SysONViewsExplorerLabelServiceDelegate.java‎

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/*******************************************************************************
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* Copyright (c) 2026 Obeo.
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* This program and the accompanying materials
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* are made available under the terms of the Eclipse Public License v2.0
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* which accompanies this distribution, and is available at
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* https://www.eclipse.org/legal/epl-2.0/
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*
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* SPDX-License-Identifier: EPL-2.0
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*
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* Contributors:
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* Obeo - initial API and implementation
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*******************************************************************************/
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package org.eclipse.syson.application.views.explorer;
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import java.util.List;
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import java.util.Objects;
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import org.eclipse.sirius.components.collaborative.trees.api.IRenameTreeItemHandler;
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import org.eclipse.sirius.components.core.api.IEditingContext;
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import org.eclipse.sirius.components.core.api.ILabelService;
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import org.eclipse.sirius.components.core.api.IReadOnlyObjectPredicate;
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import org.eclipse.sirius.components.core.api.labels.StyledString;
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import org.eclipse.sirius.components.core.api.labels.StyledStringFragment;
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import org.eclipse.sirius.components.core.api.labels.StyledStringFragmentStyle;
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import org.eclipse.sirius.components.diagrams.description.DiagramDescription;
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import org.eclipse.sirius.components.representations.Failure;
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import org.eclipse.sirius.components.representations.IStatus;
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import org.eclipse.sirius.components.trees.Tree;
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import org.eclipse.sirius.components.trees.TreeItem;
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import org.eclipse.sirius.web.application.views.viewsexplorer.services.RepresentationDescriptionType;
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import org.eclipse.sirius.web.application.views.viewsexplorer.services.RepresentationKind;
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import org.eclipse.sirius.web.application.views.viewsexplorer.services.api.IViewsExplorerLabelServiceDelegate;
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import org.eclipse.sirius.web.domain.boundedcontexts.representationdata.RepresentationMetadata;
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import org.eclipse.sirius.web.domain.services.api.IMessageService;
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import org.eclipse.syson.util.StandardDiagramsConstants;
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import org.springframework.stereotype.Service;
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/**
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* Provide the behavior of the views explorer fro SysON.
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*
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* @author frouene
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*/
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@Service
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public class SysONViewsExplorerLabelServiceDelegate implements IViewsExplorerLabelServiceDelegate {
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private final IReadOnlyObjectPredicate readOnlyObjectPredicate;
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private final List<IRenameTreeItemHandler> renameTreeItemHandlers;
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private final ILabelService labelService;
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private final IMessageService messageService;
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public SysONViewsExplorerLabelServiceDelegate(IReadOnlyObjectPredicate readOnlyObjectPredicate, List<IRenameTreeItemHandler> renameTreeItemHandlers, ILabelService labelService, IMessageService messageService) {
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this.readOnlyObjectPredicate = Objects.requireNonNull(readOnlyObjectPredicate);
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this.renameTreeItemHandlers = Objects.requireNonNull(renameTreeItemHandlers);
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this.labelService = Objects.requireNonNull(labelService);
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this.messageService = Objects.requireNonNull(messageService);
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}
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@Override
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public boolean canHandle(IEditingContext editingContext) {
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return true;
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}
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@Override
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public boolean isEditable(Object self) {
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return !this.readOnlyObjectPredicate.test(self) && self instanceof RepresentationMetadata;
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}
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@Override
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public StyledString getLabel(Object self) {
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var result = StyledString.of("");
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if (self instanceof RepresentationKind kind) {
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String name = kind.name();
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String size = String.valueOf(kind.representationDescriptionTypes().stream().mapToLong(descType -> descType.representationsMetadata().size()).sum());
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result = this.getColoredLabel(name, size);
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} else if (self instanceof RepresentationDescriptionType descriptionType) {
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String name = descriptionType.description().getLabel();
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if (descriptionType.description() instanceof DiagramDescription) {
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name = StandardDiagramsConstants.getValueFromShortName(descriptionType.id());
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}
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String size = String.valueOf(descriptionType.representationsMetadata().size());
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result = this.getColoredLabel(name, size);
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} else {
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result = this.labelService.getStyledLabel(self);
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}
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return result;
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}
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@Override
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public IStatus editLabel(IEditingContext editingContext, Tree tree, TreeItem treeItem, String newValue) {
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var optionalHandler = this.renameTreeItemHandlers.stream()
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.filter(handler -> handler.canHandle(editingContext, treeItem, newValue))
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.findFirst();
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if (optionalHandler.isPresent()) {
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IRenameTreeItemHandler renameTreeItemHandler = optionalHandler.get();
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return renameTreeItemHandler.handle(editingContext, treeItem, newValue, tree);
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}
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return new Failure(this.messageService.failedToRename());
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}
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private StyledString getColoredLabel(String label, String size) {
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return new StyledString(List.of(
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new StyledStringFragment("%s (%s)".formatted(label.toUpperCase(), size), StyledStringFragmentStyle.newDefaultStyledStringFragmentStyle()
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.foregroundColor("#261E588A")
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.build())
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));
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}
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}

‎backend/application/syson-application/src/test/java/org/eclipse/syson/application/controllers/views/view/SysONViewsExplorerViewControllerIntegrationTests.java‎

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/*******************************************************************************
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* Copyright (c) 2026 Obeo.
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* This program and the accompanying materials
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* are made available under the terms of the Eclipse Public License v2.0
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* which accompanies this distribution, and is available at
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* https://www.eclipse.org/legal/epl-2.0/
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*
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* SPDX-License-Identifier: EPL-2.0
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*
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* Contributors:
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* Obeo - initial API and implementation
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*******************************************************************************/
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package org.eclipse.syson.application.controllers.views.view;
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import static org.assertj.core.api.Assertions.assertThat;
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import static org.eclipse.sirius.components.trees.tests.TreeEventPayloadConsumer.assertRefreshedTreeThat;
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import java.time.Duration;
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import java.util.List;
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import java.util.UUID;
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import java.util.function.Consumer;
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import org.eclipse.sirius.components.diagrams.Diagram;
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import org.eclipse.sirius.components.tables.Table;
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import org.eclipse.sirius.web.application.views.viewsexplorer.ViewsExplorerEventInput;
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import org.eclipse.sirius.web.application.views.viewsexplorer.services.ViewsExplorerTreeDescriptionProvider;
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import org.eclipse.sirius.web.tests.graphql.ViewsExplorerEventSubscriptionRunner;
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import org.eclipse.sirius.web.tests.services.representation.RepresentationIdBuilder;
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import org.eclipse.syson.AbstractIntegrationTests;
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import org.eclipse.syson.GivenSysONServer;
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import org.eclipse.syson.application.data.InterconnectionViewEmptyTestProjectData;
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import org.eclipse.syson.application.data.RequirementsTableTestProjectData;
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import org.junit.jupiter.api.DisplayName;
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import org.junit.jupiter.api.Test;
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import org.springframework.beans.factory.annotation.Autowired;
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import org.springframework.boot.test.context.SpringBootTest;
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import org.springframework.transaction.annotation.Transactional;
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import reactor.test.StepVerifier;
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/**
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* Integration tests of the Views view.
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*
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* @author frouene
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*/
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@Transactional
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@SpringBootTest(webEnvironment = SpringBootTest.WebEnvironment.RANDOM_PORT)
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public class SysONViewsExplorerViewControllerIntegrationTests extends AbstractIntegrationTests {
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@Autowired
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private ViewsExplorerEventSubscriptionRunner viewsExplorerEventSubscriptionRunner;
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@DisplayName("GIVEN a project with a table, WHEN we subscribe to views events, THEN then the tree contains the table representation leaf")
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@GivenSysONServer({ RequirementsTableTestProjectData.SCRIPT_PATH })
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@Test
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public void viewsWithTableRepresentation() {
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var representationId = new RepresentationIdBuilder().buildViewsExplorerViewRepresentationId(
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List.of(Table.KIND));
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var defaultExplorerInput = new ViewsExplorerEventInput(UUID.randomUUID(), RequirementsTableTestProjectData.EDITING_CONTEXT_ID, representationId);
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var defaultFlux = this.viewsExplorerEventSubscriptionRunner.run(defaultExplorerInput).flux();
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Consumer<Object> initialDefaultViewsContentConsumer = assertRefreshedTreeThat(tree -> {
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assertThat(tree).isNotNull();
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assertThat(tree.getDescriptionId()).isEqualTo(ViewsExplorerTreeDescriptionProvider.DESCRIPTION_ID);
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assertThat(tree.getChildren()).hasSize(1);
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assertThat(tree.getChildren()).allSatisfy(treeItem -> assertThat(treeItem.getChildren()).hasSize(1));
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assertThat(tree.getChildren().get(0).getChildren()).allSatisfy(treeItem -> assertThat(treeItem.getLabel().toString()).isEqualTo("REQUIREMENTS TABLE VIEW (1)"));
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});
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StepVerifier.create(defaultFlux)
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.consumeNextWith(initialDefaultViewsContentConsumer)
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.thenCancel()
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.verify(Duration.ofSeconds(10));
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}
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@DisplayName("GIVEN a project with an interconnection view, WHEN we subscribe to views events, THEN then the tree contains the interconnection view representation leaf")
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@GivenSysONServer({ InterconnectionViewEmptyTestProjectData.SCRIPT_PATH })
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@Test
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public void viewsWithInterconnectionViewRepresentation() {
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var representationId = new RepresentationIdBuilder().buildViewsExplorerViewRepresentationId(
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List.of(Diagram.KIND));
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var defaultExplorerInput = new ViewsExplorerEventInput(UUID.randomUUID(), InterconnectionViewEmptyTestProjectData.EDITING_CONTEXT_ID, representationId);
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var defaultFlux = this.viewsExplorerEventSubscriptionRunner.run(defaultExplorerInput).flux();
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Consumer<Object> initialDefaultViewsContentConsumer = assertRefreshedTreeThat(tree -> {
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assertThat(tree).isNotNull();
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assertThat(tree.getDescriptionId()).isEqualTo(ViewsExplorerTreeDescriptionProvider.DESCRIPTION_ID);
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assertThat(tree.getChildren()).hasSize(1);
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assertThat(tree.getChildren()).allSatisfy(treeItem -> assertThat(treeItem.getChildren()).hasSize(1));
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assertThat(tree.getChildren().get(0).getChildren()).allSatisfy(treeItem -> assertThat(treeItem.getLabel().toString()).isEqualTo("INTERCONNECTION VIEW (1)"));
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});
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StepVerifier.create(defaultFlux)
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.consumeNextWith(initialDefaultViewsContentConsumer)
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.thenCancel()
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.verify(Duration.ofSeconds(10));
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}
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}

‎backend/services/syson-services/src/main/java/org/eclipse/syson/util/StandardDiagramsConstants.java‎

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/*******************************************************************************
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* Copyright (c) 2025 Obeo.
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* Copyright (c) 2025, 2026 Obeo.
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* This program and the accompanying materials
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* are made available under the terms of the Eclipse Public License v2.0
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* which accompanies this distribution, and is available at
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*******************************************************************************/
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package org.eclipse.syson.util;
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import java.util.HashMap;
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import java.util.Map;
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/**
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* StandardDiagrams-related constants.
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*
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public static final String STV_QN = "StandardViewDefinitions::StateTransitionView";
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public static final Map<String, String> SHORT_NAME_TO_VALUE = new HashMap<>();
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static {
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SHORT_NAME_TO_VALUE.put("gv", GV);
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SHORT_NAME_TO_VALUE.put("iv", IV);
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SHORT_NAME_TO_VALUE.put("afv", AFV);
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SHORT_NAME_TO_VALUE.put("stv", STV);
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}
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public static String getValueFromShortName(String shortName) {
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return SHORT_NAME_TO_VALUE.get(shortName.toLowerCase());
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}
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}

‎doc/content/modules/user-manual/assets/images/release-note-views-explorer.png‎

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‎doc/content/modules/user-manual/pages/release-notes/2026.3.0.adoc‎

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The _Search in libraries_ toggle in the _Search_ view allows to include elements from user and standard libraries in the search.
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This toggle is de-activated by default.
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image::release-note-views-explorer.png[_Views Explorer_ view with diagrams and table, width=60%,height=60%]
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== Technical details
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