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<?php
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// $Id: wizard.module,v 1.2 2007/01/16 03:57:19 dfletcher Exp $
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/**
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* Declare the wizard field type.
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*/
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function wizard_field_info() {
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return array(
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'wizard' => array('label' => t('Wizard')),
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);
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}
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/**
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* Header and footer settings.
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*/
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function wizard_field_settings($op, $field) {
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switch ($op) {
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case 'form':
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$form = array();
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$form['header'] = array(
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'#type' => 'textarea',
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'#title' => t('Page header'),
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'#default_value' => $field['header'] ? $field['header'] : '',
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'#required' => FALSE,
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'#description' => t('A header for the wizard page.'),
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'#rows' => 6,
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);
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$form['footer'] = array(
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'#type' => 'textarea',
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'#title' => t('Page footer'),
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'#default_value' => $field['footer'] ? $field['footer'] : '',
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'#required' => FALSE,
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'#description' => t('A footer for the wizard page.'),
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'#rows' => 6,
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);
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return $form;
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case 'save':
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return array('header', 'footer');
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}
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}
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/**
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* Wizard widget info.
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*/
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function wizard_widget_info() {
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return array(
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'wizard' => array(
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'label' => 'Wizard Page',
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'field types' => array('wizard'),
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),
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);
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}
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/**
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* Wizard widget, a hidden form field.
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*/
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function wizard_widget($op, &$node, $field, &$node_field) {
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switch ($op) {
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case 'form':
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$form = array();
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$form[$field['field_name']]['wizard'] = array(
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'#type' => 'hidden',
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'#default_value' => 'wizardpage',
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);
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return $form;
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break;
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}
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}
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/**
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* Count the number of pages in a wizard form. If the result is zero, this is
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* not a wizard form.
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*/
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function _wizard_count_pages(&$form) {
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$count = 0;
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foreach ($form as &$element) {
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if (!is_array($element)) continue;
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if (isset($element['wizard'])) $count++;
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}
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return $count;
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}
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/**
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* Wizard callback.
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*/
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function wizard_menu($may_cache) {
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$items = array();
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if (!$may_cache) {
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$access = FALSE;
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$menupath = FALSE;
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if(isset($_REQUEST['edit']['target'])) {
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$target = $_REQUEST['edit']['target'];
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$a = explode('/', $target);
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// During node/add/foo, just get the menu item to test access.
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if (($a[0]=='node')&&($a[1]=='add')) {
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$item = menu_get_item(NULL, $target);
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$access = $item['access'];
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}
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else if (($a[0]=='node')&&($a[2]=='edit')) {
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$node = node_load(array('nid'=>$a[1]));
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$access = node_access('update', $node);
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}
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}
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if ($item) {
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}
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$items[] = array(
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'path' => 'wizard',
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'type' => MENU_CALLBACK,
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'callback' => '_wizard_form_submit',
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'access' => $access,
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);
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}
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return $items;
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}
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/**
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* Change the CCK form into a set of wizard pages.
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*/
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function wizard_form_alter($form_id, &$form) {
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// Only affect node forms
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if (!isset($form['#node'])) return;
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// Only affect wizard pages.
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$pagecount = _wizard_count_pages($form);
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if ($pagecount==0) return;
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// Bring any elements defined before the first wizard into the first
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// wizard page (especially important for title element which can't be
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// weighted) by changing weights that are lower than the first wizard.
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// Grab the top weight while we're scanning weights.
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$firstwizweight = 1000000;
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$topweight = -1000000;
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foreach ($form as $key => &$element) {
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if (!is_array($element)) continue;
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$weight = (is_array($element)&&isset($element['#weight'])) ?
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intval($element['#weight']) : 0;
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if (isset($element['wizard'])) {
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if ($firstwizweight > $weight) $firstwizweight = $weight;
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}
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if ($weight > $topweight) $topweight = $weight;
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}
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foreach ($form as $key => &$element) {
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if (!is_array($element)) continue;
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if ($element['#weight'] < $firstwizweight)
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$element['#weight'] = $firstwizweight;
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}
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// Get the current wizard page.
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if (isset($_REQUEST['edit']['page']))
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$page = intval($_REQUEST['edit']['page']);
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else $page = 0;
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$op = $_REQUEST['op'];
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if ($op == t('Next')) $page += 1;
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else if ($op == t('Previous')) $page -= 1;
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// Hide elements not on the current page.
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uasort($form, '_form_sort'); // needs to be sorted for this to work
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$scanpage = -1;
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foreach ($form as $key => &$element) {
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if (!is_array($element)) continue;
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if (isset($element['wizard'])) { $scanpage++; continue; }
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if ($element['#type']=='submit') unset($form[$key]);
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else if ($element['#type']=='button') unset($form[$key]);
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//else if ($scanpage != $page) $element['#type'] = 'hidden';
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else if ($scanpage != $page) unset($form[$key]);
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}
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// Pass the wizard token through or create one.
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if (isset($_REQUEST['edit']['wiztoken']))
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$wiztoken = $_REQUEST['edit']['wiztoken'];
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else $wiztoken = drupal_get_token('wiztoken/' . time());
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$form['wiztoken'] = array(
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'#type' => 'hidden',
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'#default_value' => $wiztoken,
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);
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// Override the normal add/edit action.
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if (isset($_REQUEST['edit']['target']))
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$target = $_REQUEST['edit']['target'];
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else {
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$target = $form['#action'];
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// broken for subdirectory installations
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if (substr($target, 0, 4)=='/?q=') $target = substr($target, 4);
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}
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$form['target'] = array(
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'#type' => 'hidden',
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'#default_value' => $target,
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);
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$form['page'] = array(
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'#type' => 'hidden',
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'#default_value' => $page,
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);
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$form['#action'] = url('wizard');
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// Add next/prev buttons.
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$buttonweight = $topweight + 1;
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$form['actions'] = array(
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'#type' => 'fieldset',
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'#weight' => $buttonweight,
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);
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// Previous isn't working right now.
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/*if ($page > 0) {
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$form['actions']['prev'] = array(
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'#type' => 'submit',
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'#default_value' => t('Previous'),
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);
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}*/
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if ($page != $scanpage) {
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$form['actions']['next'] = array(
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'#type' => 'submit',
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'#default_value' => t('Next'),
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);
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}
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else {
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$form['actions']['finish'] = array(
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'#type' => 'submit',
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'#default_value' => t('Finish'),
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);
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}
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}
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function _wizard_form_submit() {
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// Get the target.
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if (isset($_POST['edit']['target'])) $target = $_POST['edit']['target'];
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else $target = '';
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$a = explode('/', $target);
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// Get or create a node to edit.
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$wiztoken = $_POST['edit']['wiztoken'];
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if (isset($_SESSION[$wiztoken])) {
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$node = &$_SESSION[$wiztoken];
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}
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else if (($a[0]=='node')&&($a[1]=='add')) {
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$node = new StdClass;
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$node->type = $a[2];
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}
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else if (($a[0]=='node')&&($a[2]=='edit')) {
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$node = node_load(array('nid'=>$a[1]));
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}
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// Update the node.
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foreach ($_POST['edit'] as $k => $v) $node->$k = $v;
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$_SESSION[$wiztoken] = $node;
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// Return the form.
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content_submit($node);
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node_save($node); // is it redundant?
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unset($_POST['edit']);
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return node_form($node);
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}
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