backend/src/main/java/core/api/models/timemanager/tasks/TaskEntityInfo.java

@@ -29,6 +29,8 @@ public class TaskEntityInfo {
 
     private boolean hasPlannedSchedules;
     private boolean hasTaskSerie;
+    private boolean hasSubtasks;
+    private boolean hasParent;
 
     public TaskEntityInfo(Task task) {
         this.taskID = task.getTaskID();
@@ -49,6 +51,8 @@ public class TaskEntityInfo {
         this.hasActiveSchedules = task.hasActiveSchedule();
         this.hasPlannedSchedules = task.hasPlannedSchedules();
         this.hasTaskSerie = task.getTaskSerieItem() != null;
+        this.hasSubtasks = !task.getSubtasks().isEmpty();
+        this.hasParent = task.getParent() != null;
     }
 
     public long getTaskID() {
@@ -146,4 +150,20 @@ public class TaskEntityInfo {
     public void setHasTaskSerie(boolean hasTaskSerie) {
         this.hasTaskSerie = hasTaskSerie;
     }
+
+    public boolean isHasSubtasks() {
+        return hasSubtasks;
+    }
+
+    public void setHasSubtasks(boolean hasSubtasks) {
+        this.hasSubtasks = hasSubtasks;
+    }
+
+    public boolean isHasParent() {
+        return hasParent;
+    }
+
+    public void setHasParent(boolean hasParent) {
+        this.hasParent = hasParent;
+    }
 }

frontend/src/api/model/taskEntityInfo.ts

@@ -60,5 +60,13 @@ export interface TaskEntityInfo {
      * determines whether the task is associated with a taskserie
      */
     hasTaskSerie: boolean;
+    /**
+     * determines whether a task has subtasks
+     */
+    hasSubtasks: boolean;
+    /**
+     * determines whether a task is a top task or Not
+     */
+    hasParent: boolean;
 }
 

frontend/src/app/tasks/task-detail-overview/task-detail-overview.component.html

@@ -29,7 +29,7 @@
           <button mat-flat-button class="borderless-btn" color="primary" [routerLink]="['/taskgroups', taskgroup!.taskgroupID, 'tasks', task!.taskID, 'schedule']">Schedule</button>
           <button mat-flat-button class="yellowBtn" (click)="startTaskNow()">Start now</button>
           <button mat-flat-button class="grayBtn" (click)="openTaskEditor()">Edit</button>
-          <button mat-flat-button class="lightBlueBtn" *ngIf="!task.hasTaskSerie" (click)="openRepeatingTaskEditor()">Copy</button>
+          <button mat-flat-button class="lightBlueBtn" *ngIf="!task.hasTaskSerie && !task.hasParent" (click)="openRepeatingTaskEditor()">Copy</button>
           <button mat-flat-button class="greenBtn"  *ngIf="task!.finishable" (click)="finishTask()">{{task!.finished ? 'Reopen':'Finish'}}</button>
         </div>
 

openapi.yaml

@@ -2498,6 +2498,8 @@ components:
         - hasActiveSchedules
         - hasPlannedSchedules
         - hasTaskSerie
+        - hasSubtasks
+        - hasParent
       additionalProperties: false
       properties:
         taskID:
@@ -2546,6 +2548,14 @@ components:
           type: boolean
           description: determines whether the task is associated with a taskserie
           example: false
+        hasSubtasks:
+          type: boolean
+          description: determines whether a task has subtasks
+          example: true
+        hasParent:
+          type: boolean
+          description: determines whether a task is a top task or Not
+          example: false
     TaskTaskgroupInfo:
       required:
         - taskID