<?php
// $Id: context_contrib.module,v 1.1.2.2.2.13 2010-12-23 15:26:22 darthsteven Exp $

/**
 * Implementation of hook_context_conditions().
 */
function context_contrib_context_conditions() {
  $items = array();

  // Views
  if (module_exists('views')) {
    drupal_add_js(drupal_get_path('module', 'context_contrib') .'/context_contrib.js');
    $items['views'] = array(
      '#title' => t('Views'),
      '#description' => t('Set this context when displaying the page of one of these views.'),
      '#options' => _context_contrib_get_views(),
      '#type' => 'checkboxes',
    );
  }

  // Nodequeue
  if (module_exists('nodequeue')) {
    $result = db_query("SELECT qid, title FROM {nodequeue_queue}");
    $options = array();
    while ($nq = db_fetch_object($result)) {
      $options[$nq->qid] = $nq->title;
    }
    $items['nodequeue'] = array(
      '#title' => t('Nodequeue'),
      '#description' => t('Set this context when a node in the selected nodequeue(s) is viewed.'),
      '#options' => $options,
      '#type' => 'checkboxes',
    );
  }

  // CCK
  if (module_exists('content')) {
    foreach (content_fields() as $field) {
      if ($options = content_allowed_values($field)) {
        $items[$field['field_name']] = array(
          '#title' => t('CCK Field: @field_label', array('@field_label' => $field['widget']['label'])),
          '#type' => 'checkboxes',
          '#options' => $options,
          '#description' => filter_xss_admin($field['widget']['description']),
        );
      }
    }
  }

  return $items;
}

/**
 * Implementation of hook_context_reactions().
 */
function context_contrib_context_reactions() {
  $items = array();

  // CSS Injector
  if (module_exists('css_injector')) {
    $items['css_injector'] = array(
      '#title' => t('CSS injector'),
      '#description' => t('Inject the selected css when this context is set.'),
      '#options' => _context_contrib_get_css_injector(),
      '#type' => 'checkboxes',
    );
   }

  // JS Injector
  if (module_exists('js_injector')) {
    $items['js_injector'] = array(
      '#title' => t('JS injector'),
      '#description' => t('Inject the selected js when this context is set.'),
      '#options' => _context_contrib_get_js_injector(),
      '#type' => 'checkboxes',
    );
  }
  return $items;
}

/**
 * Implementation of hook_nodeapi().
 */
function context_contrib_nodeapi(&$node, $op, $teaser, $page) {
  if ($op == 'view' && $page && ($menu_ob = menu_get_object()) && $menu_ob->nid == $node->nid) {
    context_contrib_node_condition($node, $op);
  }
}

/**
 * Implementation of hook_ctools_render_alter().
 *
 * Used to detect the presence of a page manager node view or node form.
 */
function context_contrib_ctools_render_alter($info, $page, $args, $contexts, $task, $subtask) {
  if ($page && in_array($task['name'], array('node_view', 'node_edit'), TRUE)) {
    foreach ($contexts as $ctools_context) {
      if ($ctools_context->type === 'node' && !empty($ctools_context->data)) {
        context_contrib_node_condition($ctools_context->data, $task['name'] === 'node_view' ? 'view' : 'form');
        break;
      }
    }
  }
}

/**
 * Centralized node condition call function for the ever increasing number of
 * ways to get at a node view / node form.
 */
function context_contrib_node_condition(&$node, $op) {

  // Implementation of context for nodequeue.
  if (module_exists('nodequeue')) {
    $result = db_query("SELECT qid FROM {nodequeue_nodes} WHERE nid = %d", $node->nid);
    while($qid = db_fetch_object($result)) {
      context_set_by_condition('nodequeue', $qid->qid);
    }
  }

  // Implementation of context for CCK.
  if (module_exists('content')) {
    foreach (content_fields() as $field) {
      if (isset($node->$field['field_name']) && $options = content_allowed_values($field)) {
        foreach ($node->$field['field_name'] as $item) {
          context_set_by_condition($field['field_name'], $item['value']);
        }
      }
    }
  }
}

/**
 * Implementation of hook_views_pre_view().
 */
function context_contrib_views_pre_view($view, $args) {
  switch ($view->display_handler->display->display_plugin) {
    case 'page':
    case 'calendar':
      context_set_by_condition('views', $view->name);
      // Set any contexts associated with the current display
      if (!empty($view->current_display)) {
        context_set_by_condition('views', "{$view->name}:{$view->current_display}");
      }
      break;
  }
}

/**
 * Helper function to generate a list of database and module provided views.
 */
function _context_contrib_get_views() {
  $enabled_views = array();

  $views = views_get_all_views();

  // Sort the views so our list is nice and alphabetical:
  ksort($views);

  foreach ($views as $view) {
    if (!isset($views[$view->name]->disabled) || !$views[$view->name]->disabled) {
      $enabled_views[$view->name] = $view->name;

      // Provide more granular options for each page display
      $displays = array();
      foreach ($view->display as $id => $display) {
        if ($display->display_plugin == 'page') {
          $displays[$view->name .":". $id] = "-- {$display->display_title}";
        }
      }
      if (count($displays) > 1) {
        $enabled_views += $displays;
      }
    }
  }

  return $enabled_views;
}

/**
 * Helper function to generate a list of css_injector files.
 */
function _context_contrib_get_css_injector() {
  $list = array();
  foreach (_css_injector_load_rule() as $css_rule) {
    $list[$css_rule['crid']] = $css_rule['title'];
  }
  ksort($list);
  return $list;
}

/**
 * Implementation hook_context_page_reaction() on behalf of css injector.
 */
function css_injector_context_page_reaction() {
  $css_rules = context_active_values('css_injector');
  if (!empty($css_rules)) {
    foreach ($css_rules as $crid) {
      if ($css_rule = _css_injector_load_rule($crid)) {
        if (function_exists('_css_injector_rule_path')) {
          // Support for CSS Injector 1.4
          drupal_add_css(_css_injector_rule_path($crid), 'module', $css_rule['media'], $css_rule['preprocess']);
        }
        else {
          drupal_add_css(file_create_path($css_rule['file_path']), 'module', $css_rule['media'], $css_rule['preprocess']);
        }

      }
    }
  }
  else {
    return;
  }
}

/**
 * Helper function to generate a list of js_injector files.
 */
function _context_contrib_get_js_injector() {
  $list = array();
  foreach (_js_injector_load_rule() as $js_rule) {
    $list[$js_rule['crid']] = $js_rule['title'];
  }
  ksort($list);
  return $list;
}


/**
 * Implementation hook_context_page_reaction() on behalf of js injector.
 */
function js_injector_context_page_reaction() {
  $js_rules = context_active_values('js_injector');
  if (!empty($js_rules)) {
    foreach ($js_rules as $crid) {
      if ($js_rule = _js_injector_load_rule($crid)) {
        drupal_add_js(file_create_path($js_rule['file_path']), 'module', $js_rule['scope'], FALSE, $js_rule['cache'], $js_rule['preprocess']);
      }
    }
  }
  else {
    return;
  }
}