mathjax.install in MathJax: LaTeX for Drupal 7

MathJax module install.

File

mathjax.install

<?php

/**
 * @file
 * MathJax module install.
 */

/**
 * Implements hook_uninstall().
 */
function mathjax_uninstall() {
  db_query("DELETE FROM {variable} WHERE name LIKE 'mathjax_%'");
  cache_clear_all('variables', 'cache_bootstrap');
}

/**
 * Implements hook_requirements().
 *
 * This hook will issue warnings if:
 * - MathJax relies on local files and the source files are not found
 */
function mathjax_requirements($phase) {
  $requirements = array();

  // Ensure translations don't break at install time.
  $t = get_t();
  if ($phase == 'runtime' && !variable_get('mathjax_use_cdn', TRUE)) {
    $requirements['mathjax'] = array(
      'title' => $t('MathJax'),
      'value' => $t('Installed correctly'),
      'severity' => REQUIREMENT_OK,
    );
    if (!_mathjax_requirements_isinstalled()) {
      $requirements['mathjax']['value'] = $t('Third party MathJax software not properly installed');
      $requirements['mathjax']['description'] = $t('MathJax was not found in any \'libraries\' folder (e.g. sites/all/libraries).');
      $requirements['mathjax']['severity'] = REQUIREMENT_ERROR;
    }
  }
  return $requirements;
}

/**
 * Determines whether the MathJax sources are present.
 *
 * It checks if MathJax.js is present.
 * This function is used by mathjax_requirements()
 *
 * @return bool
 *   True if MathJax is installed
 */
function _mathjax_requirements_isinstalled() {
  $mathjax_path = libraries_get_path('mathjax');
  $jspath = $mathjax_path . '/MathJax.js';
  $jsp = file_exists($jspath);
  return $jsp;
}

Functions

Name	Description
mathjax_requirements	Implements hook_requirements().
mathjax_uninstall	Implements hook_uninstall().
_mathjax_requirements_isinstalled	Determines whether the MathJax sources are present.