Support for mutiple export (Closes o5#262)

Fixed code style

Fixed code style

src/Components/Container.php

@@ -11,6 +11,8 @@
 
 namespace Grido\Components;
 
+use Grido\Components\Exports\BaseExport;
+use Grido\Components\Exports\CsvExport;
 use Grido\Grid;
 use Grido\Helpers;
 use Grido\Components\Actions\Action;
@@ -95,11 +97,30 @@ public function getOperation($need = TRUE)
     /**
      * Returns export component.
      * @param bool $need
-     * @return Export
+     * @return CsvExport
+     *
+     * @deprecated
      */
     public function getExport($need = TRUE)
     {
-        return $this->getComponent(Export::ID, $need);
+        $export = $this->getComponent(BaseExport::ID, $need);
+        if ($export) {
+            $export = $export->getComponent(CsvExport::CSV_ID, $need);
+        }
+        return $export;
+    }
+
+    /**
+     * @param bool $need
+     * @return BaseExport[]
+     */
+    public function getExports($need = TRUE)
+    {
+        $export = $this->getComponent(BaseExport::ID, $need);
+        if ($export) {
+            $export = $export->getComponents();
+        }
+        return $export;
     }
 
     /**********************************************************************************************/
@@ -185,7 +206,7 @@ public function hasExport($useCache = TRUE)
         $hasExport = $this->hasExport;
 
         if ($hasExport === NULL || $useCache === FALSE) {
-            $hasExport = (bool) $this->getComponent(Export::ID, FALSE);
+            $hasExport = (bool) $this->getExports(FALSE);
             $this->hasExport = $useCache ? $hasExport : NULL;
         }
 
@@ -361,10 +382,28 @@ public function setOperation(array $operations, $onSubmit)
     /**
      * @param string $label of exporting file
      * @return Export
+     *
+     * @deprecated
      */
     public function setExport($label = NULL)
     {
-        return new Export($this, $label);
+        return $this->addExport(new CsvExport($label), CsvExport::CSV_ID);
+    }
+
+    /**
+     * @param BaseExport $export
+     * @param string $name Component name
+     * @return BaseExport
+     */
+    public function addExport(BaseExport $export, $name)
+    {
+        $container = $this->getComponent(BaseExport::ID, FALSE);
+        if (!$container) {
+            $container = new \Nette\ComponentModel\Container();
+            $this->addComponent($container, BaseExport::ID);
+        }
+        $container->addComponent($export, $name);
+        return $export;
     }
 
     /**