[3882] Add a new tree event to support non explorer tree descriptions

CHANGELOG.adoc

@@ -31,7 +31,7 @@ Both `IInput` and `IDomainEvent` implement `ICause` and will thus be used to ind
 - https://github.com/eclipse-sirius/sirius-web/issues/3972[#3972] [diagram] The `InsideLabelStyle#displayHeaderSeparator` has been renamed to `headerSeparatorDisplayMode` and is no longer a boolean but an enum with three possible values: NEVER, ALWAYS, and IF-CHILDREN.
 Previously, the value false was equivalent to NEVER, and true to IF-CHILDREN.
 The new option ALWAYS allows the separator to be displayed in every case.
-- https://github.com/eclipse-sirius/sirius-web/issues/3678[#3678] [core] Remove `IRepresentationMetadataSearchService#findByRepresentation`, use `IRepresentationMetadataSearchService#findByRepresentationId` instead. 
+- https://github.com/eclipse-sirius/sirius-web/issues/3678[#3678] [core] Remove `IRepresentationMetadataSearchService#findByRepresentation`, use `IRepresentationMetadataSearchService#findByRepresentationId` instead.
 
 === Dependency update
 
@@ -80,6 +80,7 @@ never, always and if_children (to display the separator only if children exist).
 - https://github.com/eclipse-sirius/sirius-web/issues/3754[#3754] [sirius-web] Activate cypress tests again.
 + Make possible to register view models in the loading editing context when the "test" profile is active.
 + To activate the test profile add the value _test_ to the `SPRING_PROFILES_ACTIVE` environment variable.
+- https://github.com/eclipse-sirius/sirius-web/issues/3882[#3882] [sirius-web] Add a new tree event to handle tree description which are not explorer-related
 
 == v2024.9.0
 
@@ -218,7 +219,6 @@ A migration participant has been added to automatically keep compatible all diag
 - https://github.com/eclipse-sirius/sirius-web/issues/3951[#3951] [sirius-web] Provide an error page to redirect users in case of error
 - https://github.com/eclipse-sirius/sirius-web/issues/3974[#3974] [diagram] Add support for `<` and `>` to trigger direct edit
 
-
 == v2024.7.0
 
 === Shapes

packages/sirius-web/backend/sirius-web-application/src/main/java/org/eclipse/sirius/web/application/views/explorer/services/ExpandAllTreePathProvider.java

@@ -13,7 +13,6 @@
 package org.eclipse.sirius.web.application.views.explorer.services;
 
 import java.util.LinkedHashSet;
-import java.util.List;
 import java.util.Objects;
 import java.util.Set;
 
@@ -28,7 +27,6 @@
 import org.eclipse.sirius.components.core.api.IIdentityService;
 import org.eclipse.sirius.components.core.api.IPayload;
 import org.eclipse.sirius.components.core.api.IRepresentationDescriptionSearchService;
-import org.eclipse.sirius.components.domain.Entity;
 import org.eclipse.sirius.components.representations.VariableManager;
 import org.eclipse.sirius.components.trees.Tree;
 import org.eclipse.sirius.components.trees.description.TreeDescription;
@@ -74,7 +72,7 @@ public IPayload handle(IEditingContext editingContext, Tree tree, ExpandAllTreeP
 
         Set<String> treeItemIdsToExpand = new LinkedHashSet<>();
         var object = this.getTreeItemObject(editingContext, tree, treeItemId);
-        if (object instanceof EObject || treeItemId.startsWith(ExplorerDescriptionProvider.SETTING)) {
+        if (object instanceof EObject) {
             // We need to get the current depth of the tree item
             var itemAncestors = this.explorerNavigationService.getAncestors(editingContext, tree, treeItemId);
             maxDepth = itemAncestors.size();
@@ -99,27 +97,7 @@ private int addAllContents(IEditingContext editingContext, String treeItemId, in
         var depthConsidered = depth;
         var object = this.getTreeItemObject(editingContext, tree, treeItemId);
 
-        if (treeItemId.startsWith(ExplorerDescriptionProvider.SETTING) && object instanceof List<?> list) {
-            treeItemIdsToExpand.add(treeItemId);
-            for (var child : list) {
-                String childId = this.identityService.getId(child);
-                treeItemIdsToExpand.add(childId);
-                var childTreePathMaxDepth = depth + 1;
-                childTreePathMaxDepth = this.addAllContents(editingContext, childId, childTreePathMaxDepth, treeItemIdsToExpand, tree);
-                depthConsidered = Math.max(depthConsidered, childTreePathMaxDepth);
-            }
-        } else if (object instanceof EObject eObject) {
-            if (object instanceof Entity entity) {
-                // an Entity has a virtual node for its super types, this node should be a child of the Entity
-                var id = ExplorerDescriptionProvider.SETTING + this.identityService.getId(entity) + ExplorerDescriptionProvider.SETTING_ID_SEPARATOR + "superTypes";
-                treeItemIdsToExpand.add(id);
-                var superTypes = entity.getSuperTypes();
-                if (superTypes.size() > 0) {
-                    depthConsidered = Math.max(depthConsidered, depth + 2);
-                } else {
-                    depthConsidered = Math.max(depthConsidered, depth + 1);
-                }
-            }
+        if (object instanceof EObject eObject) {
             var contents = this.contentService.getContents(eObject);
             if (!contents.isEmpty()) {
                 treeItemIdsToExpand.add(treeItemId);

packages/sirius-web/backend/sirius-web-application/src/main/java/org/eclipse/sirius/web/application/views/explorer/services/ExplorerChildrenProvider.java

@@ -13,20 +13,16 @@
 package org.eclipse.sirius.web.application.views.explorer.services;
 
 import java.util.ArrayList;
-import java.util.Collection;
 import java.util.Comparator;
 import java.util.List;
 import java.util.Objects;
 
 import org.eclipse.emf.ecore.EObject;
-import org.eclipse.emf.ecore.EStructuralFeature.Setting;
-import org.eclipse.emf.ecore.InternalEObject;
 import org.eclipse.emf.ecore.resource.Resource;
 import org.eclipse.sirius.components.core.RepresentationMetadata;
 import org.eclipse.sirius.components.core.api.IEditingContext;
 import org.eclipse.sirius.components.core.api.IObjectService;
 import org.eclipse.sirius.components.core.api.IRepresentationMetadataSearchService;
-import org.eclipse.sirius.components.domain.Entity;
 import org.eclipse.sirius.components.representations.VariableManager;
 import org.eclipse.sirius.components.trees.renderer.TreeRenderer;
 import org.eclipse.sirius.web.application.views.explorer.services.api.IExplorerChildrenProvider;
@@ -71,15 +67,6 @@ public boolean hasChildren(VariableManager variableManager) {
                 String id = this.objectService.getId(eObject);
                 hasChildren = this.representationDataSearchService.existAnyRepresentationForTargetObjectId(id);
             }
-
-            if (!hasChildren && self instanceof Entity) {
-                hasChildren = true;
-            }
-        } else if (self instanceof Setting setting) {
-            var value = setting.get(true);
-            if (value instanceof Collection<?> collection) {
-                hasChildren = !collection.isEmpty();
-            }
         }
         return hasChildren;
     }
@@ -130,17 +117,8 @@ private List<Object> getDefaultChildren(VariableManager variableManager) {
                     representationMetadata.sort(Comparator.comparing(RepresentationMetadata::getLabel));
                     result.addAll(representationMetadata);
                     List<Object> contents = this.objectService.getContents(self);
-                    if (self instanceof Entity entity) {
-                        result.add(((InternalEObject) entity).eSetting(entity.eClass().getEStructuralFeature("superTypes")));
-                    }
                     result.addAll(contents);
-                } else if (self instanceof Setting setting) {
-                    var value = setting.get(true);
-                    if (value instanceof Collection<?> collection) {
-                        result.addAll(collection);
-                    }
                 }
-
             }
         }
         return result;
@@ -167,8 +145,6 @@ private String getTreeItemId(VariableManager variableManager) {
             id = resource.getURI().path().substring(1);
         } else if (self instanceof EObject) {
             id = this.objectService.getId(self);
-        } else if (self instanceof Setting setting) {
-            id = ExplorerDescriptionProvider.SETTING + this.objectService.getId(setting.getEObject()) + ExplorerDescriptionProvider.SETTING_ID_SEPARATOR + setting.getEStructuralFeature().getName();
         }
         return id;
     }

packages/sirius-web/backend/sirius-web-application/src/main/java/org/eclipse/sirius/web/application/views/explorer/services/ExplorerDescriptionProvider.java

@@ -20,8 +20,6 @@
 
 import org.eclipse.emf.common.util.URI;
 import org.eclipse.emf.ecore.EObject;
-import org.eclipse.emf.ecore.EStructuralFeature.Setting;
-import org.eclipse.emf.ecore.InternalEObject;
 import org.eclipse.emf.ecore.resource.Resource;
 import org.eclipse.emf.ecore.resource.ResourceSet;
 import org.eclipse.sirius.components.collaborative.api.IRepresentationImageProvider;
@@ -70,10 +68,6 @@ public class ExplorerDescriptionProvider implements IEditingContextRepresentatio
 
     public static final String REPRESENTATION_NAME = "Explorer";
 
-    public static final String SETTING = "setting:";
-
-    public static final String SETTING_ID_SEPARATOR = "::";
-
     private final IObjectService objectService;
 
     private final IURLParser urlParser;
@@ -160,8 +154,6 @@ private String getTreeItemId(VariableManager variableManager) {
             id = resource.getURI().path().substring(1);
         } else if (self instanceof EObject) {
             id = this.objectService.getId(self);
-        } else if (self instanceof Setting setting) {
-            id = SETTING + this.objectService.getId(setting.getEObject()) + SETTING_ID_SEPARATOR + setting.getEStructuralFeature().getName();
         }
         return id;
     }
@@ -173,8 +165,6 @@ private String getKind(VariableManager variableManager) {
             kind = representationMetadata.getKind();
         } else if (self instanceof Resource) {
             kind = DOCUMENT_KIND;
-        } else if (self instanceof Setting) {
-            kind = "setting";
         } else {
             kind = this.objectService.getKind(self);
         }
@@ -197,8 +187,6 @@ private StyledString getLabel(VariableManager variableManager) {
                 var kind = this.objectService.getKind(self);
                 label = this.urlParser.getParameterValues(kind).get(SemanticKindConstants.ENTITY_ARGUMENT).get(0);
             }
-        }  else if (self instanceof Setting setting) {
-            label = setting.getEStructuralFeature().getName();
         }
         return StyledString.of(label);
     }
@@ -302,36 +290,24 @@ private Object getTreeItemObject(VariableManager variableManager) {
         if (optionalEditingContext.isPresent() && optionalTreeItemId.isPresent()) {
             var treeItemId = optionalTreeItemId.get();
             var editingContext = optionalEditingContext.get();
-
-            if (treeItemId.startsWith(SETTING)) {
-                // the tree item is a setting, get the object and then the structural feature associated
-                var objectId = treeItemId.substring(SETTING.length(), treeItemId.indexOf(SETTING_ID_SEPARATOR));
-                var featureName = treeItemId.substring(treeItemId.indexOf(SETTING_ID_SEPARATOR) + SETTING_ID_SEPARATOR.length());
-                var optObject = this.objectService.getObject(editingContext, objectId);
-                if (optObject.isPresent()) {
-                    InternalEObject internalObject = (InternalEObject) optObject.get();
-                    result = internalObject.eSetting(internalObject.eClass().getEStructuralFeature(featureName));
-                }
+            var optionalObject = this.objectService.getObject(editingContext, treeItemId);
+            if (optionalObject.isPresent()) {
+                result = optionalObject.get();
             } else {
-                var optionalObject = this.objectService.getObject(editingContext, treeItemId);
-                if (optionalObject.isPresent()) {
-                    result = optionalObject.get();
-                } else {
-                    var optionalEditingDomain = Optional.of(editingContext)
-                            .filter(IEMFEditingContext.class::isInstance)
-                            .map(IEMFEditingContext.class::cast)
-                            .map(IEMFEditingContext::getDomain);
-
-                    if (optionalEditingDomain.isPresent()) {
-                        var editingDomain = optionalEditingDomain.get();
-                        ResourceSet resourceSet = editingDomain.getResourceSet();
-                        URI uri = new JSONResourceFactory().createResourceURI(treeItemId);
-
-                        result = resourceSet.getResources().stream()
-                                .filter(resource -> resource.getURI().equals(uri))
-                                .findFirst()
-                                .orElse(null);
-                    }
+                var optionalEditingDomain = Optional.of(editingContext)
+                        .filter(IEMFEditingContext.class::isInstance)
+                        .map(IEMFEditingContext.class::cast)
+                        .map(IEMFEditingContext::getDomain);
+
+                if (optionalEditingDomain.isPresent()) {
+                    var editingDomain = optionalEditingDomain.get();
+                    ResourceSet resourceSet = editingDomain.getResourceSet();
+                    URI uri = new JSONResourceFactory().createResourceURI(treeItemId);
+
+                    result = resourceSet.getResources().stream()
+                            .filter(resource -> resource.getURI().equals(uri))
+                            .findFirst()
+                            .orElse(null);
                 }
             }
         }
@@ -354,9 +330,6 @@ private Object getParentObject(VariableManager variableManager) {
                 semanticContainer = eObject.eResource();
             }
             result = semanticContainer;
-        } else if (self instanceof Setting setting) {
-            // the parent of the superTypes node is the object associated to this Setting
-            result = setting.getEObject();
         }
         return result;
     }