refresh tree button + go to study list when deleting study

shanoir-ng-front/src/app/shared/components/entity/entity.component.abstract.ts

@@ -404,7 +404,7 @@ export abstract class EntityComponent<T extends Entity> implements OnDestroy, On
     }
 
     delete(): void {
-        this.openDeleteConfirmDialog(this.entity)
+        this.openDeleteConfirmDialog(this.entity);
     }
 
     protected openDeleteConfirmDialog = (entity: T) => {

shanoir-ng-front/src/app/studies/study/study-tree.component.html

@@ -12,6 +12,12 @@
 along with this program. If not, see https://www.gnu.org/licenses/gpl-3.0.html
 -->
 <div class="commands">
+	<button class="dl-button" 
+			type="button" 
+			(click)="treeService.updateTree()" 
+			title="Refresh">
+		<i class="fa-solid fa-arrows-rotate"></i>
+	</button>
     <button class="dl-button" 
 			type="button" 
 			(click)="downloadSelected()" 

shanoir-ng-front/src/app/studies/study/tree.service.ts

@@ -138,21 +138,29 @@ export class TreeService {
         // update everything
         let studyId: number = this.study?.id;
         this.study = null;
-        this.initStudy(studyId);
+        this.initStudy(studyId).then(() => {
+            this.changeSelection();
+        });
     }
 
     removeCurrentNode() {
-        const route: string = this.selectedNode.route;
-        Object.entries(this.selectedNode.parent).forEach((entry, index) => {
-            if (Array.isArray(entry[1])) {
-                let i: number = entry[1].findIndex(node => node.route == route);
-                entry[1].splice(i, 1);
-            }
-        });
+        if (this.selectedNode?.parent) {
+            const route: string = this.selectedNode.route;
+            Object.entries(this.selectedNode.parent).forEach((entry, index) => {
+                if (Array.isArray(entry[1])) {
+                    let i: number = entry[1].findIndex(node => node.route == route);
+                    entry[1].splice(i, 1);
+                }
+            });
+        }
     }
 
     goToParent() {
-        this.router.navigate([this.selectedNode?.parent?.route]);
+        if (this.selectedNode instanceof StudyNode) {
+            this.router.navigate(['/study/list']);
+        } else {
+            this.router.navigate([this.selectedNode?.parent?.route]);
+        }
     }
 
     activateTree(activatedRoute: ActivatedRoute) {
@@ -163,6 +171,8 @@ export class TreeService {
         if (this.selection?.type == 'study') {
             this.initStudy(this.selection.id).then(() => {
                 this.studyNode.subjectsNode.open();
+                this.selectedNode = this.studyNode;
+                this.treeAvailable = !!this.selectedNode;
             });
         } else {
             let studyLoaded: Promise<void>;

shanoir-ng-front/src/app/tree/tree.model.ts

@@ -50,7 +50,7 @@ export abstract class ShanoirNode {
             setTimeout(() => {
                 // removing timeout may cause random bugs in the tree
                 this._opened = true;
-            })
+            });
             return (this.openPromise || Promise.resolve()).then(() => SuperPromise.timeoutPromise());
         } else {
             return Promise.resolve();