<?php

/**
 * Block form.
 */
function theme_context_block_form($vars) {
  $row = array(
    array('data' => drupal_render($vars['form']['blocks']), 'class' => array('blocks')),
    array('data' => drupal_render($vars['form']['selector']) . drupal_render($vars['form']['block']['help']), 'class' => array('selector')),
  );

  $output = drupal_render_children($vars['form']);

  $table = array(
    'rows' => array($row),
    'attributes' => array('id' => 'context-blockform'),
  );
  $output .= theme('table', $table);
  return $output;
}

/**
 * Generates the AJAX enabled block administration portion of the context_ui admin form.
 */
function theme_context_block_regions_form($vars) {
  $form = $vars['form'];

  // Add draggable weights
  drupal_add_js('misc/tableheader.js');
  drupal_add_js(drupal_get_path('module', 'context') . '/plugins/context_reaction_block.js');
  drupal_add_css(drupal_get_path('module', 'context') . '/plugins/context_reaction_block.css');

  $output = '';

  foreach (element_children($form) as $region) {
    $attr = array(
      'id' => "context-blockform-region-{$region}",
      'class' => array("context-blockform-region"),
    );
    drupal_add_tabledrag($attr['id'], 'order', 'sibling', 'tabledrag-hide', NULL, NULL, FALSE);
    $rows = array();
    foreach (element_children($form[$region]) as $id) {
      $form[$region][$id]['weight']['#attributes'] = array('class' => array('tabledrag-hide'));
      $label = $form[$region][$id]['#value'];
      $remove = l(t('X'), $_GET['q'], array('fragment' => 'remove', 'attributes' => array('class' => array('remove'))));
      $rows[] = array(
        'data' => array($label, drupal_render($form[$region][$id]['weight']), $remove),
        'class' => array('draggable'),
        'id' => $id,
      );
    }
    $output .= "<div class='label context-blockform-regionlabel-{$region}'>";
    $output .= l(t('+') . ' ' . t('Add'), $_GET['q'], array('fragment' => $region, 'attributes' => array('class' => array('add-block'))));
    $output .= $form[$region]['#title'];
    $output .= "</div>";
    $output .= theme('table', array('rows' => $rows, 'attributes' => $attr));
  }
  return $output;
}

/**
 * Use placeholder content for script tags that need to be replaced.
 */
function theme_context_block_script_placeholder($text = '') {
  $message = t('Please reload the page to view this block.');
  return "<div class='script-placeholder'><strong>{$text}</strong><div class='description'>{$message}</div></div>";
}

/**
 * Preprocessor for theme('context_block_browser').
 */
function template_preprocess_context_block_browser(&$vars) {
  $categories = array(
    '#type' => 'select',
    '#options' => array(0 => '<' . t('Choose a category') . '>'),
    '#attributes' => array('class' => array('context-block-browser-categories')),
    '#value' => 0,
    '#size' => 1,
    '#id' => '',
    '#name' => '',
    '#parents' => array(''),
    '#multiple' => FALSE,
    '#required' => FALSE,
  );
  $blocks = array();
  // Group blocks by module.
  foreach ($vars['blocks'] as $block) {
    $group = isset($block->context_group) ? $block->context_group : $block->module;
    // Normalize the $group, borrowed from drupal_html_id
    $group = strtr(drupal_strtolower($group), array(' ' => '-', '_' => '-', '[' => '-', ']' => ''));
    if (!isset($categories[$group])) {
      $info = system_get_info('module', $block->module);
      $title = isset($block->context_group) ? $block->context_group : (!empty($info['name']) ? $info['name'] : $block->module);
      $categories['#options'][$group] = $title;
    }
    $blocks[$group][$block->bid] = $block; // Don't call theme('context_block_browser_item') to allow others to alter.
  }
  $vars['categories'] = $categories; // Don't call theme('select') here to allow further preprocesses to alter the element.
  $vars['blocks'] = $blocks;
}

/**
 * Preprocessor for theme('context_block_browser_item').
 */
function template_preprocess_context_block_browser_item(&$vars) {
  $vars['bid'] = $vars['block']->bid;
  $vars['info'] = check_plain($vars['block']->info);
}
