Fix for #2149 / Read data validations for drop down list in another sheet. (#2150)

* Read data validations for drop down list in another sheet.

* Add function testLoadXlsxDataValidationOfAnotherSheet() in class tests/PhpSpreadsheetTests/Reader/XlsxTest.php for unit test.

* Add sample xlsx for unit tests.

* Modifiy call function isset() for warnings.

* Additional assertions to ensure that the worksheet has been read correctly for DataValidation that references a list on a different worksheet

* This should resolve the phpstan issues

Co-authored-by: Mark Baker <mark@lange.demon.co.uk>

src/PhpSpreadsheet/Reader/Xlsx.php

@@ -797,6 +797,22 @@ class Xlsx extends BaseReader
                                 $unparsedLoadedData = (new PageSetup($docSheet, $xmlSheet))->load($unparsedLoadedData);
                             }
 
+                            if ($xmlSheet !== false && isset($xmlSheet->extLst, $xmlSheet->extLst->ext, $xmlSheet->extLst->ext['uri']) && ($xmlSheet->extLst->ext['uri'] == '{CCE6A557-97BC-4b89-ADB6-D9C93CAAB3DF}')) {
+                                // Create dataValidations node if does not exists, maybe is better inside the foreach ?
+                                if (!$xmlSheet->dataValidations) {
+                                    $xmlSheet->addChild('dataValidations');
+                                }
+
+                                foreach ($xmlSheet->extLst->ext->children('x14', true)->dataValidations->dataValidation as $item) {
+                                    $node = $xmlSheet->dataValidations->addChild('dataValidation');
+                                    foreach ($item->attributes() as $attr) {
+                                        $node->addAttribute($attr->getName(), $attr);
+                                    }
+                                    $node->addAttribute('sqref', $item->children('xm', true)->sqref);
+                                    $node->addChild('formula1', $item->formula1->children('xm', true)->f);
+                                }
+                            }
+
                             if ($xmlSheet && $xmlSheet->dataValidations && !$this->readDataOnly) {
                                 (new DataValidations($docSheet, $xmlSheet))->load();
                             }

tests/PhpSpreadsheetTests/Reader/XlsxTest.php

@@ -3,6 +3,7 @@
 namespace PhpOffice\PhpSpreadsheetTests\Reader;
 
 use PhpOffice\PhpSpreadsheet\Cell\Coordinate;
+use PhpOffice\PhpSpreadsheet\Cell\DataValidation;
 use PhpOffice\PhpSpreadsheet\Document\Properties;
 use PhpOffice\PhpSpreadsheet\Reader\Xlsx;
 use PhpOffice\PhpSpreadsheet\Shared\File;
@@ -147,6 +148,31 @@ class XlsxTest extends TestCase
         self::assertTrue($worksheet->getCell('B3')->hasDataValidation());
     }
 
+    /*
+     * Test for load drop down lists of another sheet.
+     * Pull #2150, issue #2149
+     */
+    public function testLoadXlsxDataValidationOfAnotherSheet(): void
+    {
+        $filename = 'tests/data/Reader/XLSX/dataValidation2Test.xlsx';
+        $reader = new Xlsx();
+        $spreadsheet = $reader->load($filename);
+
+        $worksheet = $spreadsheet->getActiveSheet();
+
+        // same sheet
+        $validationCell = $worksheet->getCell('B5');
+        self::assertTrue($validationCell->hasDataValidation());
+        self::assertSame(DataValidation::TYPE_LIST, $validationCell->getDataValidation()->getType());
+        self::assertSame('$A$5:$A$7', $validationCell->getDataValidation()->getFormula1());
+
+        // another sheet
+        $validationCell = $worksheet->getCell('B14');
+        self::assertTrue($validationCell->hasDataValidation());
+        self::assertSame(DataValidation::TYPE_LIST, $validationCell->getDataValidation()->getType());
+        self::assertSame('Feuil2!$A$3:$A$5', $validationCell->getDataValidation()->getFormula1());
+    }
+
     /**
      * Test load Xlsx file without cell reference.
      *