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<?php
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// $Id: talk.module,v 1.5 2008/03/24 02:50:57 cwgordon7 Exp $
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/**
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* @file
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* Comments are displayed in a separate 'talk' tab, for node types you wish
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*/
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/**
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* Implementation of hook_help().
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*/
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function talk_help($path, $arg) {
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switch ($path) {
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case 'admin/help#talk':
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$output = '<p>'. t('The talk module gives you the option to display comments on a seperate tab. The option is per content type and can be set in the workflow options of a content type.') .'</p>';
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return $output;
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}
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}
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/**
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* Implementation of hook_menu().
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*/
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function talk_menu() {
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$items = array();
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$items['node/%node/talk'] = array(
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'title callback' => 'talk_menu_title',
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'page callback' => 'talk_handle',
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'page arguments' => array(1),
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'access callback' => '_talk_access',
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'access arguments' => array('access comments', 1),
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'type' => MENU_LOCAL_TASK,
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'weight' => 1,
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);
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$items['admin/settings/talk'] = array(
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'title' => t('Talk page'),
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'description' => t('Configure settings for the talk page.'),
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'page callback' => 'drupal_get_form',
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'page arguments' => array('talk_admin_form'),
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);
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return $items;
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}
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/**
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* Helper item for talk_menu: access callback.
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*/
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function _talk_access($perm, $node) {
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return (user_access($perm) && talk_activated($node->type) && $node->nid && _talk_node_comment_value($node));
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}
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/**
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* Menu call back for admin form.
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*/
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function talk_admin_form() {
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$form = array();
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$form['talk_title'] = array(
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'#type' => 'textfield',
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'#title' => t('Title of the "talk" page'),
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'#default_value' => talk_title(),
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);
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return system_settings_form($form);
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}
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function talk_title($title = NULL) {
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if (is_null($title)) {
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return variable_get('talk_title', t('Talk'));
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}
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variable_set('talk_title', $title);
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}
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/**
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* Menu callback for the title, as it would automatically pass args in, which would be bad.
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*/
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function talk_menu_title() {
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return talk_title();
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}
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/**
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* Menu callback for talk page.
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*/
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function talk_handle($node) {
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drupal_set_title($node->title);
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$add_comments = _talk_node_comment_value($node) == COMMENT_NODE_READ_WRITE && user_access('post comments');
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return theme('talkpage', $node, $add_comments);
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}
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/**
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* Implementation of hook_nodeapi().
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*/
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function talk_nodeapi(&$node, $op) {
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switch ($op) {
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case 'load':
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if (talk_activated($node->type) && arg(0) == 'node' && !arg(2)) {
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// Overwrite setting of comment module and set comments for this node to disabled.
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// This prevents the comments of being displayed.
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$output['comment_original_value'] = $node->comment;
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$output['comment'] = 0;
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return $output;
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}
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break;
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}
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}
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/**
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* Implementation of hook_link().
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*/
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function talk_link($type, $node = null, $teaser = false) {
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if ($type == 'node' && talk_activated($node->type) && user_access('access comments')) {
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$result = array();
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if ($node->comment_count) {
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$result['talk_view'] = array(
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'title' => t('@title page (@nr comments)', array('@nr' => $node->comment_count, '@title' => talk_title())),
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'href' => 'node/'. $node->nid .'/talk',
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);
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}
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elseif (_talk_node_comment_value($node) == COMMENT_NODE_READ_WRITE) {
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$result['talk_view'] = array(
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'title' => t('Add new comment'),
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'href' => "comment/reply/$node->nid",
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);
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}
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return $result;
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}
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}
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/**
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* Implementation of hook_form_alter().
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*/
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function talk_form_alter(&$form, $form_state, $form_id) {
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// Add option to comment options of node types.
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if ($form_id == 'node_type_form' && isset($form['identity']['type']) && module_exists('comment')) {
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$form['workflow']['comment_talk'] = array(
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'#type' => 'checkbox',
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'#title' => t('Display comments on separate talk page'),
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'#prefix' => '<strong>'. t('Talk pages:') .'</strong>',
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'#weight' => 5,
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'#default_value' => talk_activated($form['#node_type']->type),
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);
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}
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}
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/**
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* Implementation of hook_link_alter().
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*/
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function talk_link_alter(&$links, $node) {
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if (talk_activated($node->type)) {
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unset($links['comment_add']);
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}
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}
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/**
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* Implementation of hook_comment()
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* Changing the destination to the talk page after posting a comment
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*/
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function talk_comment($a1, $op) {
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if ($op == 'insert' || $op == 'update') {
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$nid = $a1['nid'];
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$node = node_load($nid);
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if (talk_activated($node->type)) {
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$_REQUEST['destination'] = 'node/'. $a1['nid'] .'/talk';
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}
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}
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}
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/**
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* Is talk page option activated for node tpye?
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*/
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function talk_activated($node_type, $value = NULL) {
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if (is_null($value)) {
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return variable_get('comment_talk_'. $node_type, FALSE);
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}
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variable_set('comment_talk_'. $node_type, $value);
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}
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/**
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* Value of 'comment' of node.
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*/
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function _talk_node_comment_value(&$node) {
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return isset($node->comment_original_value) ? $node->comment_original_value : $node->comment;
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}
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/**
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* Implementation of hook_theme().
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*/
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function talk_theme() {
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return array(
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'talkpage' => array(
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'template' => 'talkpage',
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'arguments' => array('node' => NULL, 'add_comments' => NULL),
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),
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);
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}
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/**
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* Theme talkpage for node
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* @param $node
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* node whose talk page is displayed
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* @param $add_comments
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* boolean which indicates if the adding of comments is allowed for current user
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* @ingroup themeable
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*/
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function template_preprocess_talkpage(&$variables) {
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$add_comments = $variables['add_comments'];
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$node = $variables['node'];
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$variables['title'] = talk_title();
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$comment_link = '';
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if ($add_comments) {
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$comment_link = l(t('Add new comment'), "comment/reply/$node->nid");
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}
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$comments = comment_render($node, 0);
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$redisplay = FALSE;
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if ($node->comment_count > 1 && $add_comments) {
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$redisplay = TRUE;
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}
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$variables['redisplay'] = $redisplay;
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$variables['comment_link'] = $comment_link;
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$variables['comments'] = $comments;
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}
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