<?php

/**
 * @file
 *   Basic module file for CKEditor styles to implement basic hooks and make
 *   available some basic functions.
 *
 * @author Johannes Haseitl <johannes@undpaul.de>
 */

/**
 * Implements hook_ctools_plugin_directory().
 */
function ckeditor_styles_ctools_plugin_directory($module, $plugin) {
  if ($module == 'ctools' && $plugin == 'export_ui') {
    return 'plugins/' . $plugin;
  }
}

/**
 * Implements hook_wysiwyg_editor_settings_alter().
 *
 * @param type $settings
 * @param type $context
 */
function ckeditor_styles_wysiwyg_editor_settings_alter(&$settings, $context) {

  // We only add the settings to ckeditor wysiwyg profiles.
  if ($context['profile']->editor == 'ckeditor') {

    $format = $context['profile']->format;

    $styles = ckeditor_styles_rules_load_all();
    $styleset = array();
    foreach ($styles as $style) {
      // Only add styles for all or the given wysiwyg profile (=format).
      if ($style->styleset == '-all-' || $style->styleset == $format) {

        // @TODO: t() is not a clean way, but it works for the moment.
        // @TODO: maybe add some more validation or cleanup
        // (eventually use own class for that).
        $styleset[] = array(
          'name' => t(check_plain($style->name), array(), array('context' => 'ckeditor_styles')),
          'element' => check_plain($style->element),
          'attributes' => $style->attributes,
        );
      }
    }
    // Finally add the settings to JS, so ckeditor_styles.js can use it.
    drupal_add_js(array('ckeditor_styles' => array($format => $styleset)), 'setting');

    $path = drupal_get_path('module', 'ckeditor_styles') . '/js';

    $settings['stylesSet'] = "$format:/$path/ckeditor_styles.js";

    // Some additional settings for ckeditor.
    if (variable_get("ckeditor_styles:stylesheetparser:$format", FALSE)) {
      if (!isset($settings['extraPlugins'])) {
        $settings['extraPlugins'] = 'stylesheetparser';
      }
      else {
        $settings['extraPlugins'] .= ',stylesheetparser';
      }
    }
  }
}

/**
 * Load all configurations via ctools.
 */
function ckeditor_styles_rules_load_all() {
  ctools_include('export');
  $result = ctools_export_crud_load_all('ckeditor_style_rules');
  return $result;
}

/**
 * Implements hook_form_FORM_ID_alter().
 *
 * Adds an additional settings page for global ckeditor styles configuration.
 */
function ckeditor_styles_form_wysiwyg_profile_form_alter(&$form, &$form_state, $form_id) {

  $editor = $form['editor']['#value'];
  if ($editor == 'ckeditor') {
    $format = $form['format']['#value'];

    $form['ckeditor_styles'] = array(
      '#type' => 'fieldset',
      '#title' => t('CKEditor style settings'),
      '#collapsible' => TRUE,
      '#collapsed' => TRUE,
      '#tree' => TRUE,
      'stylesheetparser' => array(
        '#type' => 'checkbox',
        '#title' => t('Enable stylesheet parser'),
        '#default_value' => variable_get('ckeditor_styles:stylesheetparser:' . $format, FALSE),
        '#description' => t('Enable this setting, to parse the given stylesheets for relevant style rules.'),
      ),
    );
    $form['#submit'][] = 'ckeditor_styles_form_wysiwyg_profile_submit';
  }
}

/**
 * Submit function to store the additional ckeditor_styles setting(s).
 */
function ckeditor_styles_form_wysiwyg_profile_submit($form, &$form_state) {
  // Save each value of ckeditor_styles settings.
  $format = $form_state['values']['format'];
  foreach ($form_state['values']['ckeditor_styles'] as $var => $val) {
    variable_set("ckeditor_styles:$var:$format", $val);
  }
}