add_to_head.module in Add To Head 6

Add To Head allows abritrary insertion of code into the head of the page based on path selection.

File

add_to_head.module

<?php

/**
 * @file
 * Add To Head allows abritrary insertion of code into the head of the page
 * based on path selection.
 */

/**
 * Implementation of hook_menu().
 */
function add_to_head_menu() {
  $items = array();
  $items['admin/settings/add-to-head'] = array(
    'title' => 'Add To Head',
    'description' => 'Configure <em>Add To Head</em>.',
    'page callback' => 'add_to_head_overview',
    'file' => 'add_to_head.admin.inc',
    'access arguments' => array(
      'administer add to head',
    ),
  );
  $items['admin/settings/add-to-head/add'] = array(
    'title' => 'Add New Profile',
    'page callback' => 'drupal_get_form',
    'page arguments' => array(
      'add_to_head_add_profile',
    ),
    'file' => 'add_to_head.admin.inc',
    'access arguments' => array(
      'administer add to head',
    ),
    'type' => MENU_CALLBACK,
  );
  $items['admin/settings/add-to-head/%add_to_head_profile'] = array(
    'title' => 'Edit Profile',
    'page callback' => 'drupal_get_form',
    'page arguments' => array(
      'add_to_head_edit_profile',
      3,
    ),
    'file' => 'add_to_head.admin.inc',
    'access arguments' => array(
      'administer add to head',
    ),
    'type' => MENU_CALLBACK,
  );
  $items['admin/settings/add-to-head/%add_to_head_profile/delete'] = array(
    'title' => 'Delete Profile',
    'page callback' => 'drupal_get_form',
    'page arguments' => array(
      'add_to_head_delete_profile_confirm',
      3,
    ),
    'file' => 'add_to_head.admin.inc',
    'access arguments' => array(
      'administer add to head',
    ),
    'type' => MENU_CALLBACK,
  );
  return $items;
}

/**
 * Implementation of hook_forms().
 */
function add_to_head_forms($form_id, $arg) {
  return array(
    'add_to_head_add_profile' => array(
      'callback' => 'add_to_head_edit_profile',
    ),
  );
}

/**
 * Implementation of hook_perm().
 */
function add_to_head_perm() {
  return array(
    'administer add to head',
  );
}

/**
 * Argument load handler for %add_to_head_profile URL placeholders
 */
function add_to_head_profile_load($arg) {
  $settings = variable_get('add_to_head_profiles', array());
  return isset($settings[$arg]) ? $settings[$arg] : FALSE;
}

/**
 * Implementation of hook_preprocess_page().
 * This is used to inject any code onto the appropriate pages.
 */
function add_to_head_preprocess_page(&$vars) {
  $settings = variable_get('add_to_head_profiles', array());
  $output = '';
  foreach ($settings as $profile) {
    if (empty($profile['paths'])) {
      $page_match = TRUE;
    }
    else {

      // NOTE: This code is "borrowed" from block_list().
      $path = drupal_get_path_alias($_GET['q']);

      // Compare with the internal and path alias (if any).
      $page_match = drupal_match_path($path, $profile['paths']);
      if ($path != $_GET['q']) {
        $page_match = $page_match || drupal_match_path($_GET['q'], $profile['paths']);
      }

      // When $profile['path_visibility'] has a value of 0, the block is displayed on
      // all pages except those listed in $block->pages. When set to 1, it
      // is displayed only on those pages listed in $block->pages.
      $page_match = !($profile['path_visibility'] xor $page_match);
    }
    if ($page_match) {
      $output .= "\n\n" . $profile['code'];
    }
  }
  if (!empty($output)) {
    switch ($profile['scope']) {
      case 'head':
        drupal_set_html_head($output);
        $vars['head'] = drupal_get_html_head();
        break;
      case 'styles':
      case 'scripts':
        $vars[$profile['scope']] .= $output;
        break;
    }
  }
}

Functions

Name	Description
add_to_head_forms	Implementation of hook_forms().
add_to_head_menu	Implementation of hook_menu().
add_to_head_perm	Implementation of hook_perm().
add_to_head_preprocess_page	Implementation of hook_preprocess_page(). This is used to inject any code onto the appropriate pages.
add_to_head_profile_load	Argument load handler for %add_to_head_profile URL placeholders