Upload folder via GUI - inc

inc/fields/class-field-signature.php

@@ -0,0 +1,28 @@
+<?php
+if (!defined('ABSPATH')) exit;
+class WMF_Field_Signature extends WMF_Field_Base {
+    public $type='signature'; public $label='Unterschrift'; public $icon='dashicons-edit-page'; public $category='auswahl';
+    public function render($field,$value='') { ?>
+        <div class="<?php echo esc_attr($this->wrapper_classes($field)); ?>"<?php echo $this->conditional_attrs($field); ?> data-field-id="<?php echo esc_attr($field['id']); ?>">
+            <?php $this->render_label($field); ?>
+            <div class="wmf-signature-wrap">
+                <canvas class="wmf-signature-canvas" id="sig_<?php echo esc_attr($field['id']); ?>" width="400" height="150"></canvas>
+                <div class="wmf-signature-controls">
+                    <button type="button" class="wmf-sig-clear button">Löschen</button>
+                </div>
+                <input type="hidden" name="wmf_fields[<?php echo esc_attr($field['id']); ?>]" value="<?php echo esc_attr($value); ?>" class="wmf-signature-data">
+            </div>
+            <?php $this->render_description($field); ?>
+            <span class="wmf-field-error-msg"></span>
+        </div><?php
+    }
+    public function validate($value,$field) {
+        if(!empty($field['required'])&&$field['required']==='1'&&empty($value)) return sprintf('Bitte unterschreiben Sie im Feld „%s".',$field['label']);
+        return true;
+    }
+    public function sanitize($v,$f) {
+        // Base64 PNG-Daten erlaubt, sonst leer
+        if(strpos($v,'data:image/png;base64,')===0) return sanitize_text_field($v);
+        return '';
+    }
+}