[1534] Update ViewUsage label in Explorer View

Bug: #1534
Signed-off-by: Axel RICHARD <axel.richard@obeo.fr>

Author: AxelRICHARD

CHANGELOG.adoc

@@ -83,6 +83,8 @@ Consumers may override this by providing an implementation of `org.eclipse.syson
 - https://github.com/eclipse-syson/syson/issues/1432[#1432] [metamodel] Add implicit `Subclassification` or `Subsetting` when using semantic `MetadataUsage`.
 - https://github.com/eclipse-syson/syson/issues/1355[#1355] [tests] Add coding rules tests on all modules.
 - https://github.com/eclipse-syson/syson/issues/1530[#1530] [details] Move `RequirementUsage`'s _ReqId_ property from the _Advanced_ tab to the _Core_ tab of the _Details View_.
+- https://github.com/eclipse-syson/syson/issues/1534[#1534] [explorer] Since it is now possible to switch from a _Standard Diagram View_ to another in SysON (for example from _General View_ to _Interconnection View_), the `ViewDefinition` name in displayed in the label of the `ViewUsage` in the _Explorer View_.
+With this enhancement, users can now easily identify which `ViewDefinition` is used by a `ViewUsage`.
 
 === New features
 

backend/views/syson-tree-explorer-view/src/main/java/org/eclipse/syson/tree/explorer/view/SysONExplorerTreeDescriptionProvider.java

@@ -87,7 +87,8 @@ private TreeItemLabelDescription createDefaultStyle() {
                 .newTreeItemLabelDescription()
                 .name("Default style")
                 .preconditionExpression("aql:true")
-                .children(this.getDefaultLabelFragmentDescription())
+                .children(this.getDefaultLabelFragmentDescription(),
+                        this.getTypeFragmentDescription())
                 .build();
     }
 
@@ -97,6 +98,16 @@ private TreeItemLabelFragmentDescription getDefaultLabelFragmentDescription() {
                 .build();
     }
 
+    private TreeItemLabelFragmentDescription getTypeFragmentDescription() {
+        return new TreeBuilders().newTreeItemLabelFragmentDescription()
+                .labelExpression("aql:self.getType()")
+                .style(new ViewBuilders().newTextStyleDescription()
+                        .name("GOLD_TEXT_STYLE_NAME")
+                        .foregroundColorExpression("aql:'#ab8b01'")
+                        .build())
+                .build();
+    }
+
     private List<TreeItemContextMenuEntry> getContextMenuEntries() {
         final TreeItemContextMenuEntry newObjectsFromTextMenuEntry = new TreeBuilders().newCustomTreeItemContextMenuEntry()
                 .contributionId(NEW_OBJECTS_FROM_TEXT_MENU_ENTRY_CONTRIBUTION_ID)

backend/views/syson-tree-explorer-view/src/main/java/org/eclipse/syson/tree/explorer/view/services/ComposedSysONExplorerService.java

@@ -19,6 +19,7 @@
 import org.eclipse.sirius.components.core.api.IEditingContext;
 import org.eclipse.sirius.components.trees.TreeItem;
 import org.eclipse.sirius.web.domain.boundedcontexts.representationdata.RepresentationMetadata;
+import org.eclipse.syson.sysml.ViewUsage;
 import org.eclipse.syson.tree.explorer.view.services.api.ISysONDefaultExplorerService;
 import org.eclipse.syson.tree.explorer.view.services.api.ISysONExplorerService;
 import org.eclipse.syson.tree.explorer.view.services.api.ISysONExplorerServiceDelegate;
@@ -141,6 +142,19 @@ public List<Object> getElements(IEditingContext editingContext, List<String> act
                 .orElseGet(() -> this.defaultExplorerService.getElements(editingContext, activeFilterIds));
     }
 
+    public String getType(Object self) {
+        StringBuilder type = new StringBuilder();
+        if (self instanceof ViewUsage viewUsage) {
+            var viewDefinition = viewUsage.getViewDefinition();
+            if (viewDefinition != null) {
+                type.append(" [");
+                type.append(viewDefinition.getDeclaredName());
+                type.append("]");
+            }
+        }
+        return type.toString();
+    }
+
     private Optional<ISysONExplorerServiceDelegate> getDelegate(Object object) {
         return this.explorerServiceDelegate.stream()
                 .filter(delegate -> delegate.canHandle(object))

doc/content/modules/user-manual/assets/images/view-usage-label-with-type-explorer-view.png

@@ -100,6 +100,10 @@ metadata def Function :> SemanticMetadata {
 #Function action def A0; // A0 subclassify Functions
 ```
 - Move `RequirementUsage`'s _ReqId_ property from the _Advanced_ tab to the _Core_ tab of the _Details View_.
+- Since it is now possible to switch from a _Standard Diagram View_ to another in SysON (for example from _General View_ to _Interconnection View_), the `ViewDefinition` name in displayed in the label of the `ViewUsage` in the _Explorer View_.
+With this enhancement, users can now easily identify which `ViewDefinition` is used by a `ViewUsage`.
+
+image::view-usage-label-with-type-explorer-view.png[ViewUsage in Explorer View, width=65%,height=65%]
 
 == Dependency update