1 files changed, 156 insertions, 0 deletions
diff --git a/inc/Form/LegacyForm.php b/inc/Form/LegacyForm.php
new file mode 100644
index 000000000..edd263ee7
--- /dev/null
+++ b/inc/Form/LegacyForm.php
@@ -0,0 +1,156 @@
+<?php
+namespace dokuwiki\Form;
+
+/**
+ * Class LegacyForm
+ *
+ * Provides a compatibility layer to the old Doku_Form API
+ *
+ * This can be used to work with the modern API on forms provided by old events for
+ * example. When you start new forms, just use Form\Form
+ *
+ * @package dokuwiki\Form
+ */
+class LegacyForm extends Form {
+
+    /**
+     * Creates a new modern form from an old legacy Doku_Form
+     *
+     * @param \Doku_Form $oldform
+     */
+    public function __construct(\Doku_Form $oldform) {
+        parent::__construct($oldform->params);
+
+        $this->hidden = $oldform->_hidden;
+
+        foreach($oldform->_content as $element) {
+            list($ctl, $attr) = $this->parseLegacyAttr($element);
+
+            if(is_array($element)) {
+                switch($ctl['elem']) {
+                    case 'wikitext':
+                        $this->addTextarea('wikitext')
+                             ->attrs($attr)
+                             ->id('wiki__text')
+                             ->val($ctl['text'])
+                             ->addClass($ctl['class']);
+                        break;
+                    case 'textfield':
+                        $this->addTextInput($ctl['name'], $ctl['text'])
+                             ->attrs($attr)
+                             ->id($ctl['id'])
+                             ->addClass($ctl['class']);
+                        break;
+                    case 'passwordfield':
+                        $this->addPasswordInput($ctl['name'], $ctl['text'])
+                             ->attrs($attr)
+                             ->id($ctl['id'])
+                             ->addClass($ctl['class']);
+                        break;
+                    case 'checkboxfield':
+                        $this->addCheckbox($ctl['name'], $ctl['text'])
+                             ->attrs($attr)
+                             ->id($ctl['id'])
+                             ->addClass($ctl['class']);
+                        break;
+                    case 'radiofield':
+                        $this->addRadioButton($ctl['name'], $ctl['text'])
+                             ->attrs($attr)
+                             ->id($ctl['id'])
+                             ->addClass($ctl['class']);
+                        break;
+
+                    case 'tag':
+                    case 'opentag':
+                    case 'closetag':
+                    case 'openfieldset':
+                    case 'closefieldset':
+                    case 'button':
+                    case 'field':
+                    case 'fieldright':
+                    case 'filefield':
+                    case 'menufield':
+                    case 'listboxfield':
+                        throw new \UnexpectedValueException('Unsupported legacy field ' . $ctl['elem']);
+                        break;
+                    default:
+                        throw new \UnexpectedValueException('Unknown legacy field ' . $ctl['elem']);
+
+                }
+            } else {
+                $this->addHTML($element);
+            }
+        }
+
+    }
+
+    /**
+     * Parses out what is the elements attributes and what is control info
+     *
+     * @param array $legacy
+     * @return array
+     */
+    protected function parseLegacyAttr($legacy) {
+        $attributes = array();
+        $control = array();
+
+        foreach($legacy as $key => $val) {
+            if($key{0} == '_') {
+                $control[substr($key, 1)] = $val;
+            } elseif($key == 'name') {
+                $control[$key] = $val;
+            } elseif($key == 'id') {
+                $control[$key] = $val;
+            } else {
+                $attributes[$key] = $val;
+            }
+        }
+
+        return array($control, $attributes);
+    }
+
+    /**
+     * Translates our types to the legacy types
+     *
+     * @param string $type
+     * @return string
+     */
+    protected function legacyType($type) {
+        static $types = array(
+            'text' => 'textfield',
+            'password' => 'passwordfield',
+            'checkbox' => 'checkboxfield',
+            'radio' => 'radiofield',
+        );
+        if(isset($types[$type])) return $types[$type];
+        return $type;
+    }
+
+    /**
+     * Creates an old legacy form from this modern form's data
+     *
+     * @return \Doku_Form
+     */
+    public function toLegacy() {
+        $this->balanceFieldsets();
+
+        $legacy = new \Doku_Form($this->attrs());
+        $legacy->_hidden = $this->hidden;
+        foreach($this->elements as $element) {
+            if(is_a($element, 'dokuwiki\Form\HTMLElement')) {
+                $legacy->_content[] = $element->toHTML();
+            } elseif(is_a($element, 'dokuwiki\Form\InputElement')) {
+                /** @var InputElement $element */
+                $data = $element->attrs();
+                $data['_elem'] = $this->legacyType($element->getType());
+                $label = $element->getLabel();
+                if($label) {
+                    $data['_class'] = $label->attr('class');
+                }
+                $legacy->_content[] = $data;
+            }
+        }
+
+        return $legacy;
+    }
+}