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vendor/maatwebsite/excel/src/Concerns/WithConditionalSheets.php

@@ -0,0 +1,38 @@
+<?php
+
+namespace Maatwebsite\Excel\Concerns;
+
+trait WithConditionalSheets
+{
+    /**
+     * @var array
+     */
+    protected $conditionallySelectedSheets = [];
+
+    /**
+     * @param string|array $sheets
+     *
+     * @return $this
+     */
+    public function onlySheets($sheets)
+    {
+        $this->conditionallySelectedSheets = is_array($sheets) ? $sheets : func_get_args();
+
+        return $this;
+    }
+
+    /**
+     * @return array
+     */
+    public function sheets(): array
+    {
+        return \array_filter($this->conditionalSheets(), function ($name) {
+            return \in_array($name, $this->conditionallySelectedSheets, false);
+        }, ARRAY_FILTER_USE_KEY);
+    }
+
+    /**
+     * @return array
+     */
+    abstract public function conditionalSheets(): array;
+}