make adapter configurable

README.md

@@ -15,6 +15,18 @@ These changes apply automatically to SecurityAdmin and ModelAdmin through extens
 To make import easier, import specs are replaced by a sample file that is ready to use for the user.
 This import file can be further customised by implementing `sampleImportData` that should return an array of rows.
 
+## Choosing your adapter
+
+You can choose your preferred adapter in yml. Accepted values are:
+- csv: PhpSpreadsheet,OpenSpout,League,Native
+- xlsx: PhpSpreadsheet,OpenSpout,Simple,Native
+
+```yml
+LeKoala\ExcelImportExport\ExcelImportExport:
+  preferred_csv_adapter: 'Native'
+  preferred_xlsx_adapter: 'Native'
+```
+
 ## Configure exported fields
 
 All fields are exported by default (not just summary fields that are useless by themselves)

_config.php

@@ -0,0 +1,7 @@
+<?php
+
+use LeKoala\SpreadCompat\SpreadCompat;
+use LeKoala\ExcelImportExport\ExcelImportExport;
+
+SpreadCompat::$preferredCsvAdapter = ExcelImportExport::config()->preferred_csv_adapter ?? 'Native';
+SpreadCompat::$preferredXslxAdapter = ExcelImportExport::config()->preferred_xlsx_adapter ?? 'Native';

_config/excel-import-export.yml

@@ -4,6 +4,9 @@ After:
   - "#corecache"
 ---
 LeKoala\ExcelImportExport\ExcelImportExport:
+  preferred_csv_adapter: 'Native'
+  preferred_xlsx_adapter: 'PhpSpreadsheet'
+  default_creator: 'SilverStripe'
   default_extension: "xlsx" # could be csv
   allowed_extensions:
     - csv

composer.json

@@ -22,7 +22,7 @@
         "silverstripe/recipe-plugin": "^2",
         "silverstripe/vendor-plugin": "^2",
         "silverstripe/framework": "^5",
-        "lekoala/spread-compat": "^0.5.1"
+        "lekoala/spread-compat": "^0.6"
     },
     "require-dev": {
         "phpunit/phpunit": "^9.5",

src/ExcelGridFieldExportButton.php

@@ -183,11 +183,10 @@ public function handleExport($gridField, $request = null)
 
         if ($ext != 'csv') {
             $end = ExcelImportExport::getLetter(count($this->getRealExportColumns($gridField)));
-            $opts['creator'] = "SilverStripe";
+            $opts['creator'] = ExcelImportExport::config()->default_creator;
             $opts['autofilter'] = "A1:{$end}1";
         }
 
-        SpreadCompat::$preferredCsvAdapter = SpreadCompat::NATIVE;
         SpreadCompat::output($data, $fileName, ...$opts);
         exit();
     }

src/ExcelImportExport.php

@@ -178,7 +178,7 @@ public static function sampleFileForClass($class)
         }
 
         $options = new Options();
-        $options->creator = "SilverStripe";
+        $options->creator = ExcelImportExport::config()->default_creator;
         SpreadCompat::output($data, $fileName, $options);
         exit();
     }