Form Smart Paste: abort previous call on smartPaste triggered (DevExpress#30919)

Author: anna-shakhova

packages/devextreme/js/__internal/ui/form/form.ts

@@ -1836,13 +1836,16 @@ class Form extends Widget<FormProperties> {
   }
 
   async smartPaste(text?: string): Promise<void> {
+    if (this._currentAICommand?.command === 'smartPaste') {
+      this._processCommandCompletion();
+    }
+
     const dataItems = this._itemsRunTimeInfo.getItemsForDataExtraction();
     const fields = dataItems.map((item) => ({
       name: item.dataField,
       format: getItemFormatInfo(item),
       instruction: item.aiOptions?.instruction,
     }));
-
     const smartPasteParams = {
       text: text ?? await navigator.clipboard.readText(),
       fields,

packages/devextreme/testing/tests/DevExpress.ui.widgets.form/form.aiIntegration.tests.js

@@ -268,7 +268,7 @@ QUnit.module('SmartPaste', () => {
             ];
 
             assert.strictEqual(smartPaste.calledOnce, true, 'smartPaste command called');
-            assert.deepEqual(smartPaste.getCall(0).args[0].fields, fields, 'smartPaste command called with passed text');
+            assert.deepEqual(smartPaste.getCall(0).args[0].fields, fields, 'smartPaste command called with correct fields data');
         });
 
         QUnit.test('should call smartPaste command with passed text', function(assert) {
@@ -332,5 +332,22 @@ QUnit.module('SmartPaste', () => {
                 clipboardReadStub.restore();
             }
         });
+
+        QUnit.test('update aiIntegration cancels active request and calls new one with same params', function(assert) {
+            const abortSpy = sinon.spy();
+            const smartPaste = sinon.stub().returns(abortSpy);
+            const aiIntegration = { smartPaste: smartPaste };
+
+            const form = setupFormWithAi({ aiIntegration });
+            form.smartPaste('test');
+
+            assert.strictEqual(smartPaste.calledOnce, true, 'smartPaste called');
+
+            form.smartPaste('second test');
+
+            assert.strictEqual(abortSpy.calledOnce, true, 'previous request aborted');
+            assert.strictEqual(smartPaste.getCalls().length, 2, 'smartPaste is called again');
+            assert.deepEqual(smartPaste.getCall(1).args[0].text, 'second test', 'smartPaste invoked with new text');
+        });
     });
 });