basis filter added to reports

app/Listeners/Report/AddBasis.php

@@ -0,0 +1,34 @@
+<?php
+
+namespace App\Listeners\Report;
+
+use App\Abstracts\Listeners\Report as Listener;
+use App\Events\Report\FilterShowing;
+
+class AddBasis extends Listener
+{
+    protected $classes = [
+        'App\Reports\IncomeSummary',
+        'App\Reports\ExpenseSummary',
+        'App\Reports\IncomeExpenseSummary',
+        'App\Reports\ProfitLoss',
+        'App\Reports\TaxSummary',
+    ];
+
+    /**
+     * Handle filter showing event.
+     *
+     * @param  $event
+     * @return void
+     */
+    public function handleFilterShowing(FilterShowing $event)
+    {
+        if ($this->skipThisClass($event)) {
+            return;
+        }
+
+        $event->class->filters['basis'] = $this->getBasis();
+        $event->class->filters['keys']['basis'] = 'basis';
+        $event->class->filters['defaults']['basis'] = $event->class->getSetting('basis', 'accrual');
+    }
+}