Merge pull request #1 from simonliuanu/13144-copy-enroll-student

[#13144] copy enroll student

src/web/app/pages-instructor/instructor-course-enroll-page/instructor-course-enroll-page.component.ts

@@ -667,5 +667,18 @@ export class InstructorCourseEnrollPageComponent implements OnInit {
     const existingStudentsData = existingStudentsHOTInstance.getData();
 
     newStudentsHOTInstance.loadData(existingStudentsData);
+
+    if(!this.isExistingStudentsPresent) {
+      this.statusMessageService.showErrorToast('No valid existing students to copy.');
+      return;
+    }
+
+    if(this.isExistingStudentsPanelCollapsed) {
+      this.statusMessageService.showWarningToast('Please expand existing students.');
+      return;
+    } else {
+      this.statusMessageService.showSuccessToast('Existing students copied successfully.');
+    }
+
   }
 }