context menu entry for delete action

Issue-Ref: 4004
Issue-Url: https://af3-developer.fortiss.org/issues/4004



Signed-off-by: Johannes Eder <eder@fortiss.org>

org.fortiss.tooling.base.ui/src/org/fortiss/tooling/base/ui/editor/fx/controller/.ratings

-ContextMenuUtil.java 6d270ba4c239c35ee487192427d02797e73ee109 GREEN
+ContextMenuUtil.java 2b862d2e5784115e30f76aa740a18f23a0e57b5e YELLOW
 CurvedLinkLayoutedContentAnchorangeController.java e22faedbe98c3dab660b5d2df8ebd004e116c5ba GREEN
 CurvedLinkLayoutedDiagramAnchorangeController.java f2e5e2a7cc9b6a070871e200e57371286bb15222 GREEN
 EObjectDiagramController.java 18cbb2f092409adeb728233dae6e084faf357d6d GREEN

org.fortiss.tooling.base.ui/src/org/fortiss/tooling/base/ui/editor/fx/controller/ContextMenuUtil.java

@@ -70,6 +70,21 @@ public final class ContextMenuUtil {
 		return result;
 	}
 
+	/** Creates a delete menu entry */
+	public static MenuItem createDeleteMenu(EObject target) {
+		IElementCompositorService ecs = IElementCompositorService.getInstance();
+		ICommandStackService css = ICommandStackService.getInstance();
+
+		MenuItem deleteMenuItem = new MenuItem("Delete");
+		deleteMenuItem.setOnAction(evt -> {
+			css.runAsCommand(target, () -> {
+				ecs.decompose(target);
+			});
+		});
+
+		return deleteMenuItem;
+	}
+
 	/** Creates an auto-layout menu entry for {@link IHierarchicElement}s. */
 	public static MenuItem createAutoLayoutMenu(IHierarchicElement target) {
 		final String MENU_NAME = "Automatic layout";