<?php
// $Id: context_ui.module,v 1.13.2.48 2009-03-17 18:57:51 yhahn Exp $

/**
 * Implementation of hook_theme().
 */
function context_ui_theme() {
  $items['context_ui_export_form'] = array(
    'arguments' => array('form' => array()),
    'file' => 'context_ui.admin.inc',
  );
  $items['context_ui_item_display'] = array(
    'arguments' => array('form' => array()),
    'file' => 'context_ui.admin.inc',
  );
  $items['context_ui_form'] = array(
    'arguments' => array('form' => array()),
    'file' => 'context_ui.admin.inc',
  );
  $items['context_ui_block_ui'] = array(
    'arguments' => array('form' => array()),
    'file' => 'context_ui.admin.inc',
  );
  $items['context_ui_admin'] = array(
    'arguments' => array('form' => array()),
    'file' => 'context_ui.admin.inc',
  );
  $items['context_ui_bulk_export_table'] = array(
    'arguments' => array('form' => array()),
    'file' => 'context_ui.admin.inc',
  );
  $items['context_devel'] = array(
    'arguments' => array('form' => array()),
  );
  $items['context_devel_recurse'] = array(
    'arguments' => array('form' => array()),
  );
  return $items;
}

/**
 * Implementation of hook_block().
 */
function context_ui_block($op = 'list', $delta = 0, $edit = array()) {
  switch ($op) {
    case 'list':
      $blocks = array();
      $blocks['devel']['info'] = t('Context Devel');
      return $blocks;
    case 'view':
      switch ($delta) {
        case 'devel':
          $block = array();
          $block['subject'] = t('Context Devel');
          if ($context = context_get()) {
            $output = theme('context_devel', $context);
            $block['content'] = $output;
          }
          else {
            $block['content'] = "<p>". t('No context information is set.') ."</p>";
          }
          return $block;
      }
      break;
  }
}

/**
 * Implementation of hook_menu().
 */
function context_ui_menu() {
  $items['admin/build/context'] = array(
    'title' => 'Context',
    'description' => 'Associate menus, views, blocks, etc. with different contexts to structure your site.',
    'page callback' => 'context_ui_admin',
    'type' => MENU_NORMAL_ITEM,
  );
  $items['admin/build/context/list'] = array(
    'title' => 'List',
    'page callback' => 'context_ui_admin',
    'type' => MENU_DEFAULT_LOCAL_TASK,
    'weight' => 0,
  );
  $items['admin/build/context/add'] = array(
    'title' => 'Add',
    'description' => 'Add a context to your site.',
    'page callback' => 'drupal_get_form',
    'page arguments' => array('context_ui_form', 'add'),
    'type' => MENU_LOCAL_TASK,
    'weight' => 1,
  );
  $items['admin/build/context/import'] = array(
    'title' => 'Import',
    'description' => 'Import a context definition into your site.',
    'page callback' => 'context_ui_import_page',
    'type' => MENU_LOCAL_TASK,
    'weight' => 2,
  );
  $items['admin/build/context/export'] = array(
    'title' => 'Export',
    'description' => 'Export multiple contexts from your site.',
    'page callback' => 'drupal_get_form',
    'page arguments' => array('context_ui_bulk_export', 3),
    'type' => MENU_LOCAL_TASK,
    'weight' => 2,
  );
  $items['admin/build/context/%context_ui_menu'] = array(
    'page callback' => 'drupal_get_form',
    'page arguments' => array('context_ui_form', 'edit', 3),
    'type' => MENU_CALLBACK,
  );
  $items['admin/build/context/%context_ui_menu/edit'] = array(
    'title' => t('Edit'),
    'page callback' => 'drupal_get_form',
    'page arguments' => array('context_ui_form', 'edit', 3),
    'type' => MENU_DEFAULT_LOCAL_TASK,
    'weight' => -1,
  );
  $items['admin/build/context/%context_ui_menu/edit/items'] = array(
    'title' => t('Core attributes'),
    'type' => MENU_DEFAULT_LOCAL_TASK,
  );
  $items['admin/build/context/%context_ui_menu/clone'] = array(
    'title' => t('Clone'),
    'page callback' => 'drupal_get_form',
    'page arguments' => array('context_ui_form', 'clone', 3),
    'type' => MENU_LOCAL_TASK,
  );
  $items['admin/build/context/%context_ui_menu/export'] = array(
    'title' => t('Export'),
    'page callback' => 'drupal_get_form',
    'page arguments' => array('context_ui_export', 3),
    'type' => MENU_LOCAL_TASK,
  );
  $items['admin/build/context/%context_ui_menu/delete'] = array(
    'title' => t('Delete'),
    'page callback' => 'drupal_get_form',
    'page arguments' => array('context_ui_confirm', 'delete', 3),
    'type' => MENU_LOCAL_TASK,
  );
  $items['admin/build/context/%context_ui_menu/disable'] = array(
    'title' => t('Disable'),
    'page callback' => 'drupal_get_form',
    'page arguments' => array('context_ui_confirm', 'disable', 3),
    'type' => MENU_LOCAL_TASK,
  );
  $items['admin/build/context/%context_ui_menu/enable'] = array(
    'title' => t('Enable'),
    'page callback' => 'drupal_get_form',
    'page arguments' => array('context_ui_confirm', 'enable', 3),
    'type' => MENU_LOCAL_TASK,
  );
  foreach ($items as $path => $item) {
    $items[$path]['access callback'] = 'user_access';
    $items[$path]['access arguments'] = array('administer site configuration');
    $items[$path]['file'] = 'context_ui.admin.inc';
  }
  return $items;
}

/**
 * Helper loader to parse menu arguments and load contexts accordingly.
 */
function context_ui_menu_load($arg) {
  if (is_numeric($arg)) {
    return context_load_context($arg);
  }
  else {
    $contexts = context_contexts();
    if (!empty($contexts[$arg])) {
      return $contexts[$arg];
    }
  }
}

/**
 * Implementation of hook_help().
 */
function context_ui_help($path, $arg) {
  switch ($path) {
    case 'admin/build/context':
      return '<p>'.
        t('Contexts provide you with a way to organize your site using terms familiar to real human beings. You can create a set of sections like <b>"News"</b>, <b>"Projects"</b>, <b>"Staff"</b>, and associate different technical aspects of Drupal to each section. For example, the <b>"News"</b> section may be a collection of <b>Nodes</b>, <b>Views</b>, <b>Menus</b> and <b>Blocks</b>.')
        .'</p>';
      break;
  }
}

/**
 * Implementation of hook_form_alter() for block_admin_configure.
 */
function context_ui_form_block_admin_configure_alter(&$form, $form_state) {
  // Display context_ui visibility information on block configuration pages
  $module = $form['module']['#value'];
  $delta = $form['delta']['#value'];

  $rows = array();

  $contexts = context_enabled_contexts();
  foreach ($contexts as $context) {
    if (!empty($context->block)) {
      foreach ($context->block as $block) {
        // @TODO: normalize this to either an array or object. I apolgize for this sloppy shiz : |
        $block = (object) $block;
        if ($block->module == $module && $block->delta == $delta) {
          $row = array();
          $row[] = $context->namespace;
          $row[] = $context->attribute;
          $row[] = $context->value;
          $row[] = $block->region;          
          $identifier = "{$context->namespace}-{$context->attribute}-{$context->value}";
          $options = array(
            'fragment' => 'context-ui-blocks',
            'query' => 'destination='. $_GET['q'],
          );
          if ($context->system) {            
            $row[] = l(t('Override visibility'), "admin/build/context/$identifier/clone", $options);
          }
          else {
            $row[] = l(t('Edit visibility'), "admin/build/context/{$context->cid}", $options);
          }
          $rows[] = $row;
        }
      }
    }
  }

  if ($rows) {
    $content = theme('table', array(t('Namespace'), t('Attribute'), t('Value'), t('Region'), ''), $rows);
  }
  else {
    $content = "<p>". t('No visibility rules have been set for this block using context_ui.') ."</p>";
  }

  $form['context_ui'] = array(
    '#type' => 'fieldset',
    '#title' => t('Context UI visibility'),
    '#weight' => -1,
    '#collapsible' => true,
  );
  $form['context_ui']['contexts'] = array(
    '#type' => 'item',
    '#value' => $content,
    '#description' => t('To add or remove block visibility rules based on context, use the !context_admin.', array('!context_admin' => l(t('context administration page'), 'admin/build/context'))),
  );
  $form['block_settings']['#weight'] = -5;
}

/**
 * THEME FUNCTIONS ====================================================
 */

/**
 * Takes a retrieved context array and returns a themed out tree representation of that context.
 */
function theme_context_devel($context) {
  drupal_add_css(drupal_get_path("module", "context_ui") ."/context_ui.css");
  $output = '';
  foreach ($context as $space => $a) {
    $output .= "<div class='context-devel-space'>$space</div>";
    $output .= "<div class='context-devel-tree'>". theme_context_devel_recurse($a) ."</div>";
  }
  return $output;
}

/**
 * Helper function to theme_context_devel that recurses down context arrays and themes accordingly.
 */
function theme_context_devel_recurse($value) {
  $output = '';
  if (is_array($value) || is_object($value)) {
    if (is_array($value)) {
      $type = 'array';
    }
    else if (is_object($value)) {
      $type = 'object';
    }
    foreach ((array)$value as $key => $a) {
      $output .= "<div class='context-devel-wrapper'><label><small>$type</small>$key</label>". theme('context_devel_recurse', $a) ."</div>";
    }
  }
  else {
    if (is_string($value)) {
      $type = 'string';
    }
    else if (is_int($value)) {
      $type = 'int';
    }
    else if (is_bool($value)) {
      $type = 'bool';
    }
    $output .= "<div class='context-devel-wrapper'><label><small>$type</small>$value</label></div>";
  }
  return $output;
}