diff --git a/class/saturneform.class.php b/class/saturneform.class.php
new file mode 100644
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+++ b/class/saturneform.class.php
@@ -0,0 +1,204 @@
+<?php
+/* Copyright (C) 2021-2023 EVARISK <technique@evarisk.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <https://www.gnu.org/licenses/>.
+ */
+
+/**
+ * \file    class/saturneform.class.php
+ * \ingroup saturne
+ * \brief   Class file for manage SaturneForm
+ */
+
+// Load Dolibarr libraries
+require_once DOL_DOCUMENT_ROOT . '/core/lib/files.lib.php';
+require_once DOL_DOCUMENT_ROOT . '/core/lib/functions.lib.php';
+
+/**
+ * Class for SaturneForm
+ */
+class SaturneForm
+{
+    /**
+     * @var bool Browser layout is on phone
+     */
+    public bool $OnPhone = false;
+
+    /**
+     * Constructor
+     */
+    public function __construct()
+    {
+        global $conf;
+
+        if ($conf->browser->layout == 'phone') {
+            $this->OnPhone = true;
+        }
+    }
+
+    /**
+     * Show modify button
+     *
+     * @param SaturneObject $object     Current object
+     * @param array         $moreParams More parameters
+     */
+    public function showModifyButton(SaturneObject $object, array $moreParams = [])
+    {
+        global $langs;
+
+        // Modify
+        $displayButton = $this->OnPhone ? '<i class="fas fa-edit fa-2x"></i>' : '<i class="fas fa-edit"></i>' . ' ' . $langs->trans('Modify');
+        if (($object->status == $object::STATUS_DRAFT || $moreParams['check'])) {
+            print '<a class="butAction" id="actionButtonEdit" href="' . $_SERVER['PHP_SELF'] . '?id=' . $object->id . $moreParams['url'] . '&action=edit' . '">' . $displayButton . '</a>';
+        } else {
+            print '<span class="butActionRefused classfortooltip" title="' . dol_escape_htmltag($langs->trans('ObjectMustBeDraft', ucfirst($langs->transnoentities('The' . ucfirst($object->element))))) . '">' . $displayButton . '</span>';
+        }
+    }
+
+    /**
+     * Show validate button
+     *
+     * @param SaturneObject $object     Current object
+     * @param array         $moreParams More parameters
+     */
+    public function showValidateButton(SaturneObject $object, array $moreParams = [])
+    {
+        global $langs;
+
+        // Validate
+        $displayButton = $this->OnPhone ? '<i class="fas fa-check fa-2x"></i>' : '<i class="fas fa-check"></i>' . ' ' . $langs->trans('Validate');
+        if (($object->status == $object::STATUS_DRAFT || $moreParams['check'])) {
+            print '<span class="butAction" id="actionButtonValidate">' . $displayButton . '</span>';
+        } elseif ($object->status < $object::STATUS_DRAFT) {
+            print '<span class="butActionRefused classfortooltip" title="' . dol_escape_htmltag($langs->trans('ObjectMustBeDraft', ucfirst($langs->transnoentities('The' . ucfirst($object->element))))) . '">' . $displayButton . '</span>';
+        }
+    }
+
+    /**
+     * Show reopen button
+     *
+     * @param SaturneObject $object Current object
+     */
+    public function showReOpenButton(SaturneObject $object)
+    {
+        global $langs;
+
+        // ReOpen
+        $displayButton = $this->OnPhone ? '<i class="fas fa-lock-open fa-2x"></i>' : '<i class="fas fa-lock-open"></i>' . ' ' . $langs->trans('ReOpenDoli');
+        if ($object->status == $object::STATUS_VALIDATED) {
+            print '<span class="butAction" id="actionButtonInProgress">' . $displayButton . '</span>';
+        } elseif ($object->status > $object::STATUS_VALIDATED) {
+            print '<span class="butActionRefused classfortooltip" title="' . dol_escape_htmltag($langs->trans('ObjectMustBeValidated', $langs->transnoentities('The' . ucfirst($object->element)))) . '">' . $displayButton . '</span>';
+        }
+    }
+
+    /**
+     * Show sign button
+     *
+     * @param  SaturneObject    $object    Current object
+     * @param  SaturneSignature $signatory Signatory object
+     * @throws Exception
+     */
+    public function showSignButton(SaturneObject $object, SaturneSignature $signatory)
+    {
+        global $langs;
+
+        // Sign
+        $displayButton = $this->OnPhone ? '<i class="fas fa-signature fa-2x"></i>' : '<i class="fas fa-signature"></i>' . ' ' . $langs->trans('Sign');
+        if ($object->status == $object::STATUS_VALIDATED && !$signatory->checkSignatoriesSignatures($object->id, $object->element)) {
+            print '<a class="butAction" id="actionButtonSign" href="' . dol_buildpath('/custom/saturne/view/saturne_attendants.php?id=' . $object->id . '&module_name=DoliSIRH&object_type=' . $object->element . '&document_type=TimeSheetDocument&attendant_table_mode=simple', 3) . '">' . $displayButton . '</a>';
+        } else {
+            print '<span class="butActionRefused classfortooltip" title="' . dol_escape_htmltag($langs->trans('ObjectMustBeValidatedToSign', $langs->transnoentities('The' . ucfirst($object->element)))) . '">' . $displayButton . '</span>';
+        }
+    }
+
+    /**
+     * Show lock button
+     *
+     * @param  SaturneObject    $object    Current object
+     * @param  SaturneSignature $signatory Signatory object
+     * @throws Exception
+     */
+    public function showlockButton(SaturneObject $object, SaturneSignature $signatory)
+    {
+        global $langs;
+
+        // Lock
+        $displayButton = $this->OnPhone ? '<i class="fas fa-lock fa-2x"></i>' : '<i class="fas fa-lock"></i>' . ' ' . $langs->trans('Lock');
+        if ($object->status == $object::STATUS_VALIDATED && $signatory->checkSignatoriesSignatures($object->id, $object->element)) {
+            print '<span class="butAction" id="actionButtonLock">' . $displayButton . '</span>';
+        } else {
+            print '<span class="butActionRefused classfortooltip" title="' . dol_escape_htmltag($langs->trans('AllSignatoriesMustHaveSigned', $langs->transnoentities('The' . ucfirst($object->element)))) . '">' . $displayButton . '</span>';
+        }
+    }
+
+    /**
+     * Show send email button
+     *
+     * @param SaturneObject $object    Current object
+     * @param string        $uploadDir Upload dir path
+     */
+    public function showSendEmailButton(SaturneObject $object, string $uploadDir)
+    {
+        global $langs;
+
+        // Send email
+        $displayButton = $this->OnPhone ? '<i class="fas fa-envelope fa-2x"></i>' : '<i class="fas fa-envelope"></i>' . ' ' . $langs->trans('SendMail');
+        if ($object->status == $object::STATUS_LOCKED) {
+            $fileParams = dol_most_recent_file($uploadDir . '/' . $object->element . 'document' . '/' . $object->ref);
+            $file       = $fileParams['fullname'];
+            if (file_exists($file) && !strstr($fileParams['name'], 'specimen')) {
+                $forceBuildDoc = 0;
+            } else {
+                $forceBuildDoc = 1;
+            }
+            print dolGetButtonAction($displayButton, '', 'default', $_SERVER['PHP_SELF'] . '?id=' . $object->id . '&action=presend&forcebuilddoc=' . $forceBuildDoc . '&mode=init#formmailbeforetitle');
+        } else {
+            print '<span class="butActionRefused classfortooltip" title="' . dol_escape_htmltag($langs->trans('ObjectMustBeLockedToSendEmail', ucfirst($langs->transnoentities('The' . ucfirst($object->element))))) . '">' . $displayButton . '</span>';
+        }
+    }
+
+    /**
+     * Show archive button
+     *
+     * @param SaturneObject $object Current object
+     */
+    public function showArchiveButton(SaturneObject $object)
+    {
+        global $langs;
+
+        // Archive
+        $displayButton = $this->OnPhone ?  '<i class="fas fa-archive fa-2x"></i>' : '<i class="fas fa-archive"></i>' . ' ' . $langs->trans('Archive');
+        if ($object->status == $object::STATUS_LOCKED) {
+            print '<a class="butAction" href="' . $_SERVER['PHP_SELF'] . '?id=' . $object->id . '&action=confirm_archive&token=' . newToken() . '">' . $displayButton . '</a>';
+        } else {
+            print '<span class="butActionRefused classfortooltip" title="' . dol_escape_htmltag($langs->trans('ObjectMustBeLockedToArchive', ucfirst($langs->transnoentities('The' . ucfirst($object->element))))) . '">' . $displayButton . '</span>';
+        }
+    }
+
+    /**
+     * Show delete button
+     *
+     * @param SaturneObject $object             Current object
+     * @param int           $permissionToDelete Delete object permission
+     */
+    public function showDeleteButton(SaturneObject $object, int $permissionToDelete)
+    {
+        global $langs;
+
+        // Delete (need delete permission, or if draft, just need create/modify permission)
+        $displayButton = $this->OnPhone ? '<i class="fas fa-trash fa-2x"></i>' : '<i class="fas fa-trash"></i>' . ' ' . $langs->trans('Delete');
+        print dolGetButtonAction($displayButton, '', 'delete', $_SERVER['PHP_SELF'] . '?id=' . $object->id . '&action=delete&token=' . newToken(), '', $permissionToDelete || ($object->status == $object::STATUS_DRAFT));
+    }
+}