first commit

lib/pkp/classes/components/forms/FieldUploadImage.php

@@ -0,0 +1,60 @@
+<?php
+/**
+ * @file classes/components/form/FieldUploadImage.php
+ *
+ * Copyright (c) 2014-2021 Simon Fraser University
+ * Copyright (c) 2000-2021 John Willinsky
+ * Distributed under the GNU GPL v3. For full terms see the file docs/COPYING.
+ *
+ * @class FieldUploadImage
+ *
+ * @ingroup classes_controllers_form
+ *
+ * @brief A field for uploading a file.
+ */
+
+namespace PKP\components\forms;
+
+class FieldUploadImage extends FieldUpload
+{
+    /** @copydoc Field::$component */
+    public $component = 'field-upload-image';
+
+    /** @var string Base url for displaying the image */
+    public $baseUrl = '';
+
+    /** @var string Label for the alt text field */
+    public $altTextLabel = '';
+
+    /** @var string Description for the alt text field */
+    public $altTextDescription = '';
+
+    /** @var string Description for the image thumbnail */
+    public $thumbnailDescription = '';
+
+    /**
+     * @copydoc Field::getConfig()
+     */
+    public function getConfig()
+    {
+        if (!array_key_exists('acceptedFiles', $this->options)) {
+            $this->options['acceptedFiles'] = 'image/*';
+        }
+        $config = parent::getConfig();
+        $config['baseUrl'] = $this->baseUrl;
+
+        $config['thumbnailDescription'] = __('common.upload.thumbnailPreview');
+        $config['altTextLabel'] = __('common.altText');
+        $config['altTextDescription'] = __('common.altTextInstructions');
+
+        return $config;
+    }
+
+    /**
+     * @copydoc Field::getEmptyValue()
+     */
+    public function getEmptyValue()
+    {
+        return null;
+    }
+}