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lib/pkp/controllers/grid/files/LibraryFileGridCellProvider.php

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+<?php
+
+/**
+ * @file controllers/grid/files/LibraryFileGridCellProvider.php
+ *
+ * Copyright (c) 2014-2021 Simon Fraser University
+ * Copyright (c) 2003-2021 John Willinsky
+ * Distributed under the GNU GPL v3. For full terms see the file docs/COPYING.
+ *
+ * @class LibraryFileGridCellProvider
+ *
+ * @ingroup controllers_grid_settings_library
+ *
+ * @brief Subclass for a LibraryFile grid column's cell provider
+ */
+
+namespace PKP\controllers\grid\files;
+
+use PKP\controllers\api\file\linkAction\DownloadLibraryFileLinkAction;
+use PKP\controllers\grid\GridCellProvider;
+use PKP\controllers\grid\GridColumn;
+use PKP\controllers\grid\GridHandler;
+
+class LibraryFileGridCellProvider extends GridCellProvider
+{
+    /**
+     * Extracts variables for a given column from a data element
+     * so that they may be assigned to template before rendering.
+     *
+     * @param \PKP\controllers\grid\GridRow $row
+     * @param GridColumn $column
+     *
+     * @return array
+     */
+    public function getTemplateVarsFromRowColumn($row, $column)
+    {
+        $element = & $row->getData();
+        $columnId = $column->getId();
+        assert($element instanceof \PKP\core\DataObject && !empty($columnId));
+        switch ($columnId) {
+            case 'files':
+                // handled by our link action.
+                return ['label' => ''];
+        }
+    }
+
+    /**
+     * Get cell actions associated with this row/column combination
+     *
+     * @param \PKP\controllers\grid\GridRow $row
+     * @param GridColumn $column
+     *
+     * @return array an array of LinkAction instances
+     */
+    public function getCellActions($request, $row, $column, $position = GridHandler::GRID_ACTION_POSITION_DEFAULT)
+    {
+        switch ($column->getId()) {
+            case 'files':
+                $element = $row->getData();
+                assert($element instanceof \PKP\context\LibraryFile);
+                // Create the cell action to download a file.
+                return [new DownloadLibraryFileLinkAction($request, $element)];
+        }
+        return parent::getCellActions($request, $row, $column, $position);
+    }
+}