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<?php
/**
* @file
* Administrative page callbacks for the Forum module.
*/
/**
* Page callback: Returns a form for creating a new forum or container.
*
* @param $type
* What is being added. Possible values are 'forum' and 'container'.
* @param $edit
* (optional) Associative array containing a forum term to be edited.
* Defaults to an empty array.
*
* @return
* A form for creating a new forum or container.
*
* @see forum_menu()
*/
function forum_form_main($type, $edit = array()) {
$edit = (array) $edit;
if ((isset($_POST['op']) && $_POST['op'] == t('Delete')) || !empty($_POST['confirm'])) {
return drupal_get_form('forum_confirm_delete', $edit['tid']);
}
switch ($type) {
case 'forum':
return drupal_get_form('forum_form_forum', $edit);
break;
case 'container':
return drupal_get_form('forum_form_container', $edit);
break;
}
}
/**
* Form constructor for adding and editing a forum.
*
* @param $edit
* (optional) Associative array containing a forum term to be added or edited.
* Defaults to an empty array.
*
* @see forum_form_submit()
* @ingroup forms
*/
function forum_form_forum($form, &$form_state, $edit = array()) {
$edit += array(
'name' => '',
'description' => '',
'tid' => NULL,
'weight' => 0,
);
$form['name'] = array('#type' => 'textfield',
'#title' => t('Forum name'),
'#default_value' => $edit['name'],
'#maxlength' => 255,
'#description' => t('Short but meaningful name for this collection of threaded discussions.'),
'#required' => TRUE,
);
$form['description'] = array('#type' => 'textarea',
'#title' => t('Description'),
'#default_value' => $edit['description'],
'#description' => t('Description and guidelines for discussions within this forum.'),
);
$form['parent']['#tree'] = TRUE;
$form['parent'][0] = _forum_parent_select($edit['tid'], t('Parent'), 'forum');
$form['weight'] = array('#type' => 'weight',
'#title' => t('Weight'),
'#default_value' => $edit['weight'],
'#description' => t('Forums are displayed in ascending order by weight (forums with equal weights are displayed alphabetically).'),
);
$form['vid'] = array('#type' => 'hidden', '#value' => variable_get('forum_nav_vocabulary', ''));
$form['actions'] = array('#type' => 'actions');
$form['actions']['submit'] = array('#type' => 'submit', '#value' => t('Save'));
if ($edit['tid']) {
$form['actions']['delete'] = array('#type' => 'submit', '#value' => t('Delete'));
$form['tid'] = array('#type' => 'hidden', '#value' => $edit['tid']);
}
$form['#submit'][] = 'forum_form_submit';
$form['#theme'] = 'forum_form';
return $form;
}
/**
* Form submission handler for forum_form_forum() and forum_form_container().
*/
function forum_form_submit($form, &$form_state) {
if ($form['form_id']['#value'] == 'forum_form_container') {
$container = TRUE;
$type = t('forum container');
}
else {
$container = FALSE;
$type = t('forum');
}
$term = (object) $form_state['values'];
$status = taxonomy_term_save($term);
switch ($status) {
case SAVED_NEW:
if ($container) {
$containers = variable_get('forum_containers', array());
$containers[] = $term->tid;
variable_set('forum_containers', $containers);
}
$form_state['values']['tid'] = $term->tid;
drupal_set_message(t('Created new @type %term.', array('%term' => $form_state['values']['name'], '@type' => $type)));
break;
case SAVED_UPDATED:
drupal_set_message(t('The @type %term has been updated.', array('%term' => $form_state['values']['name'], '@type' => $type)));
// Clear the page and block caches to avoid stale data.
cache_clear_all();
break;
}
$form_state['redirect'] = 'admin/structure/forum';
return;
}
/**
* Returns HTML for a forum form.
*
* By default this does not alter the appearance of a form at all, but is
* provided as a convenience for themers.
*
* @param $variables
* An associative array containing:
* - form: A render element representing the form.
*
* @ingroup themeable
*/
function theme_forum_form($variables) {
return drupal_render_children($variables['form']);
}
/**
* Form constructor for adding and editing forum containers.
*
* @param $edit
* (optional) Associative array containing a container term to be added or edited.
* Defaults to an empty array.
*
* @see forum_form_submit()
* @ingroup forms
*/
function forum_form_container($form, &$form_state, $edit = array()) {
$edit += array(
'name' => '',
'description' => '',
'tid' => NULL,
'weight' => 0,
);
// Handle a delete operation.
$form['name'] = array(
'#title' => t('Container name'),
'#type' => 'textfield',
'#default_value' => $edit['name'],
'#maxlength' => 255,
'#description' => t('Short but meaningful name for this collection of related forums.'),
'#required' => TRUE
);
$form['description'] = array(
'#type' => 'textarea',
'#title' => t('Description'),
'#default_value' => $edit['description'],
'#description' => t('Description and guidelines for forums within this container.')
);
$form['parent']['#tree'] = TRUE;
$form['parent'][0] = _forum_parent_select($edit['tid'], t('Parent'), 'container');
$form['weight'] = array(
'#type' => 'weight',
'#title' => t('Weight'),
'#default_value' => $edit['weight'],
'#description' => t('Containers are displayed in ascending order by weight (containers with equal weights are displayed alphabetically).')
);
$form['vid'] = array(
'#type' => 'hidden',
'#value' => variable_get('forum_nav_vocabulary', ''),
);
$form['actions'] = array('#type' => 'actions');
$form['actions']['submit'] = array(
'#type' => 'submit',
'#value' => t('Save')
);
if ($edit['tid']) {
$form['actions']['delete'] = array('#type' => 'submit', '#value' => t('Delete'));
$form['tid'] = array('#type' => 'value', '#value' => $edit['tid']);
}
$form['#submit'][] = 'forum_form_submit';
$form['#theme'] = 'forum_form';
return $form;
}
/**
* Form constructor for confirming deletion of a forum taxonomy term.
*
* @param $tid
* ID of the term to be deleted.
*
* @see forum_confirm_delete_submit()
* @ingroup forms
*/
function forum_confirm_delete($form, &$form_state, $tid) {
$term = taxonomy_term_load($tid);
$form['tid'] = array('#type' => 'value', '#value' => $tid);
$form['name'] = array('#type' => 'value', '#value' => $term->name);
return confirm_form($form, t('Are you sure you want to delete the forum %name?', array('%name' => $term->name)), 'admin/structure/forum', t('Deleting a forum or container will also delete its sub-forums, if any. To delete posts in this forum, visit <a href="@content">content administration</a> first. This action cannot be undone.', array('@content' => url('admin/content'))), t('Delete'), t('Cancel'));
}
/**
* Form submission handler for forum_confirm_delete().
*/
function forum_confirm_delete_submit($form, &$form_state) {
taxonomy_term_delete($form_state['values']['tid']);
drupal_set_message(t('The forum %term and all sub-forums have been deleted.', array('%term' => $form_state['values']['name'])));
watchdog('content', 'forum: deleted %term and all its sub-forums.', array('%term' => $form_state['values']['name']));
$form_state['redirect'] = 'admin/structure/forum';
return;
}
/**
* Form constructor for the forum settings page.
*
* @see forum_menu()
* @see system_settings_form()
* @ingroup forms
*/
function forum_admin_settings($form) {
$number = drupal_map_assoc(array(5, 10, 15, 20, 25, 30, 35, 40, 50, 60, 80, 100, 150, 200, 250, 300, 350, 400, 500));
$form['forum_hot_topic'] = array('#type' => 'select',
'#title' => t('Hot topic threshold'),
'#default_value' => variable_get('forum_hot_topic', 15),
'#options' => $number,
'#description' => t('The number of replies a topic must have to be considered "hot".'),
);
$number = drupal_map_assoc(array(10, 25, 50, 75, 100));
$form['forum_per_page'] = array('#type' => 'select',
'#title' => t('Topics per page'),
'#default_value' => variable_get('forum_per_page', 25),
'#options' => $number,
'#description' => t('Default number of forum topics displayed per page.'),
);
$forder = array(1 => t('Date - newest first'), 2 => t('Date - oldest first'), 3 => t('Posts - most active first'), 4 => t('Posts - least active first'));
$form['forum_order'] = array('#type' => 'radios',
'#title' => t('Default order'),
'#default_value' => variable_get('forum_order', 1),
'#options' => $forder,
'#description' => t('Default display order for topics.'),
);
return system_settings_form($form);
}
/**
* Form constructor for the forum overview form.
*
* Returns a form for controlling the hierarchy of existing forums and
* containers.
*
* @see forum_menu()
* @ingroup forms
*/
function forum_overview($form, &$form_state) {
module_load_include('inc', 'taxonomy', 'taxonomy.admin');
$vid = variable_get('forum_nav_vocabulary', '');
$vocabulary = taxonomy_vocabulary_load($vid);
$form = taxonomy_overview_terms($form, $form_state, $vocabulary);
foreach (element_children($form) as $key) {
if (isset($form[$key]['#term'])) {
$term = $form[$key]['#term'];
$form[$key]['view']['#href'] = 'forum/' . $term['tid'];
if (in_array($form[$key]['#term']['tid'], variable_get('forum_containers', array()))) {
$form[$key]['edit']['#title'] = t('edit container');
$form[$key]['edit']['#href'] = 'admin/structure/forum/edit/container/' . $term['tid'];
}
else {
$form[$key]['edit']['#title'] = t('edit forum');
$form[$key]['edit']['#href'] = 'admin/structure/forum/edit/forum/' . $term['tid'];
}
}
}
// Remove the alphabetical reset.
unset($form['actions']['reset_alphabetical']);
// The form needs to have submit and validate handlers set explicitly.
$form['#theme'] = 'taxonomy_overview_terms';
$form['#submit'] = array('taxonomy_overview_terms_submit'); // Use the existing taxonomy overview submit handler.
$form['#empty_text'] = t('No containers or forums available. <a href="@container">Add container</a> or <a href="@forum">Add forum</a>.', array('@container' => url('admin/structure/forum/add/container'), '@forum' => url('admin/structure/forum/add/forum')));
return $form;
}
/**
* Returns a select box for available parent terms.
*
* @param $tid
* ID of the term that is being added or edited.
* @param $title
* Title for the select box.
* @param $child_type
* Whether the child is a forum or a container.
*
* @return
* A select form element.
*/
function _forum_parent_select($tid, $title, $child_type) {
$parents = taxonomy_get_parents($tid);
if ($parents) {
$parent = array_shift($parents);
$parent = $parent->tid;
}
else {
$parent = 0;
}
$vid = variable_get('forum_nav_vocabulary', '');
$children = taxonomy_get_tree($vid, $tid);
// A term can't be the child of itself, nor of its children.
foreach ($children as $child) {
$exclude[] = $child->tid;
}
$exclude[] = $tid;
$tree = taxonomy_get_tree($vid);
$options[0] = '<' . t('root') . '>';
if ($tree) {
foreach ($tree as $term) {
if (!in_array($term->tid, $exclude)) {
$options[$term->tid] = str_repeat(' -- ', $term->depth) . $term->name;
}
}
}
if ($child_type == 'container') {
$description = t('Containers are usually placed at the top (root) level, but may also be placed inside another container or forum.');
}
elseif ($child_type == 'forum') {
$description = t('Forums may be placed at the top (root) level, or inside another container or forum.');
}
return array('#type' => 'select', '#title' => $title, '#default_value' => $parent, '#options' => $options, '#description' => $description, '#required' => TRUE);
}