fix(module:modal): no longer trigger any action when closing (#7336)

Author: maroon1

components/modal/modal-ref.ts

@@ -167,6 +167,9 @@ export class NzModalRef<T = NzSafeAny, R = NzSafeAny> implements NzModalLegacyAP
   }
 
   private async trigger(action: NzTriggerAction): Promise<void> {
+    if (this.state === NzModalState.CLOSING) {
+      return;
+    }
     const trigger = { ok: this.config.nzOnOk, cancel: this.config.nzOnCancel }[action];
     const loadingKey = { ok: 'nzOkLoading', cancel: 'nzCancelLoading' }[action] as 'nzOkLoading' | 'nzCancelLoading';
     const loading = this.config[loadingKey];

components/modal/modal.spec.ts

@@ -908,6 +908,32 @@ describe('NzModal', () => {
       expect(overlayContainerElement.querySelectorAll('nz-modal-container').length).toBe(0);
     }));
 
+    it('should omit any action when closing', async function () {
+      const onOk = jasmine.createSpy('onOk', () => {});
+      const onCancel = jasmine.createSpy('onCancel', () => {});
+      const modalRef = modalService.create({
+        nzContent: TestWithModalContentComponent,
+        nzOnOk: onOk,
+        nzOnCancel: onCancel
+      });
+      fixture.detectChanges();
+      expect(overlayContainerElement.querySelectorAll('nz-modal-container').length).toBe(1);
+      await modalRef.triggerOk();
+      expect(onOk).toHaveBeenCalledTimes(1);
+      fakeAsync(() => {
+        expect(modalRef.getState()).toBe(NzModalState.CLOSING);
+        modalRef.triggerOk();
+        modalRef.triggerOk();
+        modalRef.triggerCancel();
+        modalRef.triggerCancel();
+        expect(onOk).toHaveBeenCalledTimes(1);
+        expect(onCancel).toHaveBeenCalledTimes(0);
+        fixture.detectChanges();
+        flush();
+        expect(overlayContainerElement.querySelectorAll('nz-modal-container').length).toBe(0);
+      });
+    });
+
     it('should set loading state when the callback is promise', fakeAsync(() => {
       const modalRef = modalService.create({
         nzContent: TestWithModalContentComponent,