<?php
/**
 * @file
 * Modal Forms allows you to activate a Ctools based
 * ajax modal on common Drupal forms
 */

/**
 * Implements hook_init().
 */
function modal_forms_init() {
  // Do not load modal_forms during the Drupal installation process, e.g. if part
  // of installation profiles.
  if (!drupal_installation_attempted()) {
    _modal_forms_doheader();
  }
}

/**
 * Implements hook_menu().
 */
function modal_forms_menu() {
  $items['admin/config/development/modal_forms'] = array(
    'title' => 'Modal forms',
    'description' => 'Adjust Modal forms settings.',
    'page callback' => 'drupal_get_form',
    'page arguments' => array('modal_forms_admin_settings'),
    'access arguments' => array('administer site configuration'),
    'file' => 'modal_forms.admin.inc',
  );
  $items['modal_forms/%ctools_js/login'] = array(
    'title' => 'Log in',
    'page callback' => 'modal_forms_login',
    'page arguments' => array(1),
    'access callback' => TRUE,
    'file' => 'modal_forms.pages.inc',
    'type' => MENU_CALLBACK,
  );
  $items['modal_forms/%ctools_js/register'] = array(
    'title' => 'Register',
    'page callback' => 'modal_forms_register',
    'page arguments' => array(1),
    'access callback' => 'user_register_access',
    'file' => 'modal_forms.pages.inc',
    'type' => MENU_CALLBACK,
  );
  $items['modal_forms/%ctools_js/password'] = array(
    'title' => 'Password',
    'page callback' => 'modal_forms_password',
    'page arguments' => array(1),
    'access callback' => 'user_is_anonymous',
    'file' => 'modal_forms.pages.inc',
    'type' => MENU_CALLBACK,
  );
  $items['modal_forms/%ctools_js/contact'] = array(
    'title' => 'Contact',
    'page callback' => 'modal_forms_contact',
    'page arguments' => array(1),
    'access arguments' => array('access site-wide contact form'),
    'file' => 'modal_forms.pages.inc',
    'type' => MENU_CALLBACK,
  );
  $items['modal_forms/%ctools_js/comment/reply/%node'] = array(
    'title' => 'Comment',
    'page callback' => 'modal_forms_comment_reply',
    'page arguments' => array(1, 4),
    'access arguments' => array('post comments'),
    'file' => 'modal_forms.pages.inc',
    'type' => MENU_CALLBACK,
  );
  $items['modal_forms/%ctools_js/webform/%node'] = array(
    'title' => 'Webform',
    'page callback' => 'modal_forms_view_webform',
    'page arguments' => array(1, 3),
    'access callback' => 'node_access',
    'access arguments' => array('view', 3),
    'file' => 'modal_forms.pages.inc',
    'type' => MENU_CALLBACK,
  );
  $items['modal_forms/%ctools_js/dismiss'] = array(
    'title' => 'Dismiss',
    'page callback' => 'modal_forms_dismiss',
    'page arguments' => array(1),
    'access callback' => TRUE,
    'file' => 'modal_forms.pages.inc',
    'type' => MENU_CALLBACK,
  );

  return $items;
}

/**
 * Implements hook_form_alter().
 */
function modal_forms_form_alter(&$form, &$form_state, $form_id) {
  switch ($form_id) {
    case 'user_login':
      if (arg(0) == 'modal_forms') {
        $form['name']['#size'] = 25;
        $form['pass']['#size'] = 25;

        // Add links as needed.
        if (variable_get('modal_forms_login_links', 0)) {
          $items = array();
          // Add standard links.
          if (variable_get('modal_forms_login_links', 0) == 1) {
            if (variable_get('user_register', USER_REGISTER_VISITORS_ADMINISTRATIVE_APPROVAL)) {
              $items[] = l(t('Create new account'), 'user/register', array('attributes' => array('title' => t('Create a new user account.'))));
            }
            $items[] = l(t('Request new password'), 'user/password', array('attributes' => array('title' => t('Request new password via e-mail.'))));
          }
          // Add links that opens in a modal_forms.
          if (variable_get('modal_forms_login_links', 0) == 2) {
            if (variable_get('user_register', USER_REGISTER_VISITORS_ADMINISTRATIVE_APPROVAL)) {
              $items[] = ctools_modal_text_button(t('Create new account'), 'modal_forms/nojs/register', t('Create a new user account'), 'ctools-modal-modal-popup-medium');
            }
            $items[] = ctools_modal_text_button(t('Request new password'), 'modal_forms/nojs/password', t('Request new password via e-mail.'), 'ctools-modal-modal-popup-small');
          }
          $form['links'] = array('#markup' => theme('item_list', array('items' => $items)));
        }
      }
      break;
    case 'user_register_form':
      if (arg(0) == 'modal_forms') {
        $form['account']['name']['#size'] = 30;
        $form['account']['mail']['#size'] = 30;
      }
      break;
    case 'user_pass':
      if (arg(0) == 'modal_forms') {
        $form['name']['#size'] = 30;
      }
      break;
  }
}

/**
 * Implements hook_form_BASE_FROM_ID_alter().
 */
function modal_forms_form_comment_form_alter(&$form, &$form_state, $form_id) {
  if (variable_get('modal_forms_comment', 0)) {
    $comment = $form_state['comment'];

    // If not replying to a comment, use our dedicated page callback for new
    // comments on nodes.
    if (empty($comment->cid) && empty($comment->pid)) {
      // Change the action to call our function.
      $form['#action'] = url('modal_forms/nojs/comment/reply/' . $comment->nid);
    }
  }
}

/**
 * Check if modal_forms should be active for the current URL.
 *
 * @return
 *   TRUE if modal_forms should be active for the current page.
 */
function _modal_forms_active() {
  // Code from the block_list funtion in block.module.
  $path = drupal_get_path_alias($_GET['q']);
  $modal_forms_pages = variable_get('modal_forms_pages', "admin*\nimagebrowser*\nimg_assist*\nimce*\nnode/add/*\nnode/*/edit\nprint/*\nprintpdf/*\nsystem/ajax\nsystem/ajax/*");
  // Compare with the internal and path alias (if any).
  $page_match = drupal_match_path($path, $modal_forms_pages);
  if ($path != $_GET['q']) {
    $page_match = $page_match || drupal_match_path($_GET['q'], $modal_forms_pages);
  }
  $page_match = variable_get('modal_forms_visibility', 0) == 0 ? !$page_match : $page_match;

  return $page_match;
}

/**
 * Loads the various js and css files.
 */
function _modal_forms_doheader() {
  static $already_added = FALSE;
  if ($already_added) {
    return; // Don't add the JavaScript and CSS multiple times.
  }
  if (!_modal_forms_active()) {
    return; // Don't add the JavaScript and CSS on specified paths.
  }

  // Include the CTools tools that we need.
  ctools_include('ajax');
  ctools_include('modal');

  // Add CTools' javascript to the page.
  ctools_modal_add_js();

  $throbber = theme('image', array('path' => ctools_image_path('loading_animation.gif', 'modal_forms'), 'alt' => t('Loading...'), 'title' => t('Loading')));
  $js_settings = array(
    'modal-popup-small' => array(
      'modalSize' => array(
        'type' => variable_get('modal_forms_popup_small_type', 'fixed'),
        'width' => floatval(variable_get('modal_forms_popup_small_width', 300)),
        'height' => floatval(variable_get('modal_forms_popup_small_height', 300)),
      ),
      'modalOptions' => array(
        'opacity' => floatval(variable_get('modal_forms_opacity', 0.85)),
        'background' => variable_get('modal_forms_background_color', '#000'),
      ),
      'animation' => 'fadeIn',
      'modalTheme' => 'ModalFormsPopup',
      'throbber' => $throbber,
      'closeText' => t('Close'),
    ),
    'modal-popup-medium' => array(
      'modalSize' => array(
        'type' => variable_get('modal_forms_popup_medium_type', 'fixed'),
        'width' => floatval(variable_get('modal_forms_popup_medium_width', 550)),
        'height' => floatval(variable_get('modal_forms_popup_medium_height', 450)),
      ),
      'modalOptions' => array(
        'opacity' => floatval(variable_get('modal_forms_opacity', 0.85)),
        'background' => variable_get('modal_forms_background_color', '#000'),
      ),
      'animation' => 'fadeIn',
      'modalTheme' => 'ModalFormsPopup',
      'throbber' => $throbber,
      'closeText' => t('Close'),
    ),
    'modal-popup-large' => array(
      'modalSize' => array(
        'type' => variable_get('modal_forms_popup_large_type', 'scale'),
        'width' => floatval(variable_get('modal_forms_popup_large_width', 0.8)),
        'height' => floatval(variable_get('modal_forms_popup_large_height', 0.8)),
      ),
      'modalOptions' => array(
        'opacity' => floatval(variable_get('modal_forms_opacity', 0.85)),
        'background' => variable_get('modal_forms_background_color', '#000'),
      ),
      'animation' => 'fadeIn',
      'modalTheme' => 'ModalFormsPopup',
      'throbber' => $throbber,
      'closeText' => t('Close'),
    ),
  );

  drupal_add_js($js_settings, 'setting');

  // Add modal_forms own js and CSS.
  ctools_add_css('modal_forms_popup', 'modal_forms');
  ctools_add_js('modal_forms_popup', 'modal_forms');

  $path = drupal_get_path('module', 'modal_forms');

  // Automatically rewrite selected links to open in a modal.
  if ($GLOBALS['user']->uid == 0) {
    if (variable_get('modal_forms_login', 0)) {
      drupal_add_js($path . '/js/modal_forms_login.js', array('weight' => -20));
    }
    if (variable_get('modal_forms_register', 0)) {
      drupal_add_js($path . '/js/modal_forms_register.js', array('weight' => -20));
    }
    if (variable_get('modal_forms_password', 0)) {
      drupal_add_js($path . '/js/modal_forms_password.js', array('weight' => -20));
    }
  }

  if (variable_get('modal_forms_contact', 0)) {
    drupal_add_js($path . '/js/modal_forms_contact.js', array('weight' => -20));
  }

  if (user_access('post comments') && variable_get('modal_forms_comment', 0)) {
    drupal_add_js($path . '/js/modal_forms_comment.js', array('weight' => -20));
  }

  $already_added = TRUE;
}