<?php
/**
 * @file
 * Additional styles for the Panels module.
 */

/**
 * Implements hook_ctools_plugin_directory().
 */
function panels_extra_styles_ctools_plugin_directory($owner, $plugin_type) {
  if ($owner == 'panels') {
    return "plugins/$plugin_type";
  }
}

/**
 * Render region callback.
 *
 * - Wrapper: Element.
 * - Wrapper: Raw.
 */
function theme_panels_extra_styles_wrapper_render_region($vars) {
  $content = $vars['panes'];
  $settings = $vars['settings'];

  // Theme.
  if (!empty($settings['theme']) && $settings['theme']) {
    $output = theme('panels_default_style_render_region', $vars);
  }
  else {
    $output = implode(PHP_EOL, $content);
  }

  // Content is wrapped AFTER sending to Panels theming. This behavior is
  // different than with panes.
  if (!empty($output)) {
    $content_wrapper = _panels_extra_styles_wrapper_wrap(!empty($settings['content']) ? $settings['content'] : array());
    $output
      = $content_wrapper['prefix'] .
        $output .
        $content_wrapper['suffix'];
  }

  return $output;
}

/**
 * Render pane callback.
 *
 * - Wrapper: Element.
 * - Wrapper: Raw.
 */
function theme_panels_extra_styles_wrapper_render_pane(&$vars) {
  $content = &$vars['content'];
  $settings = $vars['settings'];

  // Content is wrapped BEFORE sending to Panels theming. This behavior is
  // different than with regions.
  if (!empty($content->title)) {
    $title_wrapper = _panels_extra_styles_wrapper_wrap(!empty($settings['title']) ? $settings['title'] : array());
    $content->title
      = $title_wrapper['prefix'] .
        $content->title .
        $title_wrapper['suffix'];
  }
  if (!empty($content->content)) {
    $content_wrapper = _panels_extra_styles_wrapper_wrap(!empty($settings['content']) ? $settings['content'] : array());
    $content->content
      = $content_wrapper['prefix'] .
        render($content->content) .
        $content_wrapper['suffix'];
  }

  // Theme.
  if (!empty($settings['theme']) && $settings['theme']) {
    $output = theme('panels_pane', $vars);
  }
  else {
    $title = !empty($content->title) ? $content->title : NULL;
    $content = !empty($content->content) ? $content->content : NULL;
    $output = $title . $content;
  }

  return $output;
}

/**
 * Wrap it, wrap it real good.
 *
 * @return array
 *   Array with prefix and suffix keys.
 */
function _panels_extra_styles_wrapper_wrap($item = array()) {
  $wrap['prefix'] = NULL;
  $wrap['suffix'] = NULL;
  $wrap['attributes'] = NULL;

  if (!empty($item['attributes'])) {
    foreach ($item['attributes'] as $key => $value) {
      if (!empty($value)) {
        $wrap['attributes'] .= " $key=\"$value\"";
      }
    }
  }

  if (!empty($item['element']) && $item['element'] != 'no_wrapper') {
    $wrap['prefix'] = '<' . $item['element'] . $wrap['attributes'] . '>';
    $wrap['suffix'] = '</' .  $item['element'] . '>';
  }

  if (!empty($item['prefix'])) {
    $wrap['prefix'] = $item['prefix'];
  }
  if (!empty($item['suffix'])) {
    $wrap['suffix'] = $item['suffix'];

  }

  // Tidy.
  $wrap['prefix'] = PHP_EOL . $wrap['prefix'];
  $wrap['suffix'] = $wrap['suffix'] . PHP_EOL;

  return $wrap;
}