Club Drupal

<?php

/**

 * @file panels_mini.module

 *

 * This module provides mini panels which are basically panels that can be

 * used within blocks or other panels.

 */

/**

 * Implementation of hook_permission().

 */

function panels_mini_permission() {

  return array(

    'create mini panels' => array(

      'title' => t('Create mini panels'),

      'description' => t('Create new mini panels'),

    ),

    'administer mini panels' => array(

      'title' => t('Administer mini panels'),

      'description' => t('Edit and delete mini panels'),

    ),

  );

}

/**

 * Implementation of hook_menu().

 */

function panels_mini_menu() {

  // Safety: go away if CTools is not at an appropriate version.

  if (!defined('PANELS_REQUIRED_CTOOLS_API') || !module_invoke('ctools', 'api_version', PANELS_REQUIRED_CTOOLS_API)) {

    return array();

  }

  $items['admin/structure/mini-panels/settings'] = array(

    'title' => 'Settings',

    'page callback' => 'panels_mini_settings',

    'access arguments' => array('create mini panels'),

    'type' => MENU_LOCAL_TASK,

  );

  // Also provide settings on the main panel UI

  $items['admin/structure/panels/settings/panels-mini'] = array(

    'title' => 'Mini panels',

    'page callback' => 'panels_mini_settings',

    'access arguments' => array('create mini panels'),

    'type' => MENU_LOCAL_TASK,

  );

  return $items;

}

/**

 * Settings for mini panels.

 */

function panels_mini_settings() {

  ctools_include('common', 'panels');

  return drupal_get_form('panels_common_settings', 'panels_mini');

}

// ---------------------------------------------------------------------------

// Allow the rest of the system access to mini panels

/**

 * Implementation of hook_block_info().

 */

function panels_mini_block_info() {

  // Safety: go away if CTools is not at an appropriate version.

  if (!defined('PANELS_REQUIRED_CTOOLS_API') || !module_invoke('ctools', 'api_version', PANELS_REQUIRED_CTOOLS_API)) {

    return array();

  }

  $blocks = array();

  $minis = panels_mini_load_all();

  foreach ($minis as $panel_mini) {

    if (empty($panel_mini->disabled) && (module_exists('page_manager') || empty($panel_mini->requiredcontexts))) {

      $blocks[$panel_mini->name] = array(

        'info' => t('Mini panel: "@title"', array('@title' => $panel_mini->admin_title)),

        'cache' => DRUPAL_NO_CACHE,

      );

    }

  }

  return $blocks;

}

/**

 * Implementation of hook_block_view().

 *

 * @see panels_mini_panels_mini_content_type_render().

 */

function panels_mini_block_view($delta = 0) {

  // static recursion protection.

  static $viewing = array();

  if (!empty($viewing[$delta])) {

    return;

  }

  $viewing[$delta] = TRUE;

  $panel_mini = panels_mini_load($delta);

  if (empty($panel_mini)) {

    // Bail out early if the specified mini panel doesn't exist.

    return;

  }

  ctools_include('context');

  $contexts = array();

  if (module_exists('page_manager') && $current_page = page_manager_get_current_page()) {

    if (!empty($current_page['contexts'])) {

      $contexts = ctools_context_match_required_contexts($panel_mini->requiredcontexts, $current_page['contexts']);

    }

  }

  drupal_alter('panels_mini_block_contexts', $contexts, $panel_mini);

  $panel_mini->context = $panel_mini->display->context =  ctools_context_load_contexts($panel_mini, FALSE, $contexts);

  $panel_mini->display->css_id = panels_mini_get_id($panel_mini->name);

  $panel_mini->display->owner = $panel_mini;

  $block = array();

  $block['content'] = panels_render_display($panel_mini->display);

  $block['subject'] = $panel_mini->display->get_title();

  unset($viewing[$delta]);

  return $block;

}

/**

 * Implementation of hook_block_configure().

 */

function panels_mini_block_configure($delta = 0) {

  return array(

    'admin_shortcut' => array(

      '#markup' => l(t('Manage this mini-panel'), 'admin/structure/mini-panels/list/' . $delta . '/edit')

    ),

  );

}

/**

 * Implements hook_block_list_alter().

 *

 * Remove the block if the required contexts are not available.

 */

function panels_mini_block_list_alter(&$blocks) {

  if (module_exists('page_manager')) {

    $current_page = page_manager_get_current_page();

  }

  // Load add at once to save time.

  panels_mini_load_all();

  foreach ($blocks as $key => $block) {

    if ($block->module != 'panels_mini') {

      // This block was added by a contrib module, leave it in the list.

      continue;

    }

    $panel_mini = panels_mini_load($block->delta);

    if (empty($panel_mini)) {

      // Bail out early if the specified mini panel doesn't exist.

      unset($blocks[$key]);

      continue;

    }

    if (!empty($panel_mini->requiredcontexts)) {

      if (!$current_page || empty($current_page['contexts'])) {

        unset($blocks[$key]);

        continue;

      }

      else {

        $required = array();

        foreach ($panel_mini->requiredcontexts as $context) {

          $info = ctools_get_context($context['name']);

          $required[] = new ctools_context_required($context['identifier'], $info['context name']);

        }

        if (!ctools_context_match_requirements($current_page['contexts'], $required)) {

          unset($blocks[$key]);

          continue;

        }

      }

    }

  }

}

/**

 * Implements hook_get_pane_links_alter().

 */

function panels_mini_get_pane_links_alter(&$links, $pane, $content_type) {

  if ($pane->type == 'panels_mini') {

    $links['top']['edit_panels_mini'] = array(

      'title' => t('Edit mini panel'),

      'href' => url('admin/structure/mini-panels/list/' . $pane->subtype . '/edit/content', array('absolute' => TRUE)),

      'attributes' => array('target' => array('_blank')),

    );

  }

}

/**

 * Implements hook_contextual_links_view_alter().

 */

function panels_mini_contextual_links_view_alter(&$element, $items) {

  // Add contextual links to all mini panel blocks with bid property.

  if (isset($element['#element']['#block']) && isset($element['#element']['#block']->bid) && strpos((string) $element['#element']['#block']->bid, 'panels_mini') === 0) {

    $admin_pages = array(

      t('Configure mini panel settings') => 'basic',

      t('Configure mini panel context') => 'context',

      t('Configure mini panel layout') => 'layout',

      t('Configure mini panel content') => 'content',

    );

    foreach ($admin_pages as $title => $tail) {

      $element['#links']['mini-panels-' . $tail] = array(

        'title' => $title,

        'href' => 'admin/structure/mini-panels/list/' . $element['#element']['#block']->delta . '/edit/' . $tail,

        'query' => drupal_get_destination(),

      );

    }

  }

}

/**

 * Statically store all used IDs to ensure all mini panels get a unique id.

 */

function panels_mini_get_id($name) {

  $id_cache = &drupal_static(__FUNCTION__, array());

  $id = 'mini-panel-' . $name;

  if (!empty($id_cache[$name])) {

    $id .= "-" . $id_cache[$name]++;

  }

  else {

    $id_cache[$name] = 1;

  }

  return $id;

}

// ---------------------------------------------------------------------------

// Database functions.

/**

 * Create a new page with defaults appropriately set from schema.

 */

function panels_mini_new($set_defaults = TRUE) {

  ctools_include('export');

  return ctools_export_new_object('panels_mini', $set_defaults);

}

/**

 * Load a single mini panel.

 */

function panels_mini_load($name) {

  $cache = &drupal_static('panels_mini_load_all', array());

  // We use array_key_exists because failed loads will be NULL and

  // isset() will try to load it again.

  if (!array_key_exists($name, $cache)) {

    $cid = 'panels_mini_load:' . $name;

    $result = cache_get($cid, 'cache_panels');

    if (!empty($result->data)) {

      $cache[$name] = $result->data;

    }

    else {

      ctools_include('export');

      $result = ctools_export_load_object('panels_mini', 'names', array($name));

      if (isset($result[$name])) {

        if (empty($result[$name]->display)) {

          $result[$name]->display = panels_load_display($result[$name]->did);

          if (!empty($result[$name]->title) && empty($result[$name]->display->title)) {

            $result[$name]->display->title = $result[$name]->title;

          }

        }

        $cache[$name] = $result[$name];

        if (!empty($result[$name]->title) && empty($result[$name]->admin_title)) {

          $cache[$name]->admin_title = $result[$name]->title;

        }

        cache_set($cid, $cache[$name], 'cache_panels', CACHE_TEMPORARY);

      }

      else {

        $cache[$name] = NULL;

      }

    }

  }

  if (isset($cache[$name])) {

    return $cache[$name];

  }

}

/**

 * Load all mini panels.

 */

function panels_mini_load_all($reset = FALSE) {

  $cache = &drupal_static('panels_mini_load_all', array());

  static $all_loaded = FALSE;

  // We check our own private static because individual minis could have

  // been loaded prior to load all and we need to know that.

  if (!$all_loaded || $reset) {

    $all_loaded = TRUE;

    if ($reset) {

      $cache = array();

    }

    else {

      $panel_names = db_select('panels_mini', 'pm')

        ->fields('pm', array('name'))

        ->execute();

      $cids = array();

      foreach ($panel_names as $name) {

        $cids[] = 'panels_mini_load:' . $name->name;

      }

      if (empty($cids)) {

        return array_filter($cache);

      }

      $output = cache_get_multiple($cids, 'cache_panels');

      foreach ($output as $mini) {

        if (!empty($mini->data)) {

          $mini = $mini->data;

          $cache[$mini->name] = $mini;

        }

      }

    }

    ctools_include('export');

    $minis = ctools_export_load_object('panels_mini');

    $dids = array();

    foreach ($minis as $mini) {

      if (empty($cache[$mini->name])) {

        if (!empty($mini->did)) {

          $dids[$mini->did] = $mini->name;

        }

        else {

        // Translate old style titles into new titles.

          if (!empty($mini->title) && empty($mini->display->title)) {

            $mini->display->title = $mini->title;

          }

        }

        // Translate old style titles into new titles.

        if (isset($mini->title) && empty($mini->admin_title)) {

          $mini->admin_title = $mini->title;

        }

        $cache[$mini->name] = $mini;

      }

    }

    $displays = panels_load_displays(array_keys($dids));

    foreach ($displays as $did => $display) {

      if (!empty($cache[$dids[$did]]->title) && empty($display->title)) {

        $display->title = $cache[$dids[$did]]->title;

      }

      $cache[$dids[$did]]->display = $display;

    }

  }

  // Strip out NULL entries that may have been added by panels_mini_load().

  return array_filter($cache);

}

/**

 * Write a mini panel to the database.

 */

function panels_mini_save(&$mini) {

  if (!empty($mini->display)) {

    $mini->display->storage_id = $mini->name;

    $display = panels_save_display($mini->display);

    $mini->did = $display->did;

  }

  // Clear the panels_mini_load cache.

  cache_clear_all('panels_mini_load:', 'cache_panels', TRUE);

  $update = (isset($mini->pid) && $mini->pid != 'new') ? array('pid') : array();

  drupal_write_record('panels_mini', $mini, $update);

  return $mini;

}

/**

 * Remove a mini panel.

 */

function panels_mini_delete($mini) {

  db_delete('panels_mini')

    ->condition('name', $mini->name)

    ->execute();

  if (db_table_exists('block') && $mini->type != t('Overridden')) {

    // Also remove from block table as long as there isn't a default that may appear.

    db_delete('block')

      ->condition('delta', $mini->name)

      ->condition('module', 'panels_mini')

      ->execute();

  }

  return panels_delete_display($mini->did);

}

/**

 * Export a mini panel.

 */

function panels_mini_export($mini, $indent = '') {

  ctools_include('export');

  $output = ctools_export_object('panels_mini', $mini, $indent);

  // Export the primary display

  $display = !empty($mini->display) ? $mini->display : panels_load_display($mini->did);

  $output .= panels_export_display($display, $indent);

  $output .= $indent . '$mini->display = $display' . ";\n";

  return $output;

}

/**

 * Remove the block version of mini panels from being available content types.

 */

function panels_mini_ctools_block_info($module, $delta, &$info) {

  $info = NULL;

}

/**

 * Implementation of hook_ctools_plugin_directory() to let the system know

 * we implement task and task_handler plugins.

 */

function panels_mini_ctools_plugin_directory($module, $plugin) {

  if ($module == 'ctools' && ($plugin == 'content_types' || $plugin == 'export_ui')) {

    return 'plugins/' . $plugin;

  }

  if ($module == 'panels' && $plugin == 'panels_storage') {

    return 'plugins/' . $plugin;

  }

}

/**

 * Get the display cache for the panels_mini plugin.

 */

function _panels_mini_panels_cache_get($key) {

  ctools_include('export-ui');

  $plugin = ctools_get_export_ui('panels_mini');

  $handler = ctools_export_ui_get_handler($plugin);

  if (!$handler) {

    return;

  }

  $item = $handler->edit_cache_get($key);

  if (!$item) {

    $item = ctools_export_crud_load($handler->plugin['schema'], $key);

  }

  return array($handler, $item);

}

/**

 * Get display edit cache for the panels mini export UI

 *

 * The key is the second half of the key in this form:

 * panels_mini:TASK_NAME:HANDLER_NAME;

 */

function panels_mini_panels_cache_get($key) {

  ctools_include('common', 'panels');

  list($handler, $item) = _panels_mini_panels_cache_get($key);

  if (isset($item->mini_panels_display_cache)) {

    return $item->mini_panels_display_cache;

  }

  $cache = new stdClass();

  $cache->display = $item->display;

  $cache->display->context = ctools_context_load_contexts($item);

  $cache->display->cache_key = 'panels_mini:' . $key;

  $cache->display->storage_type = 'panels_mini';

  // Temporary storage id that's replaced in panels_mini_save().

  $cache->display->storage_id = 'panels_mini';

  $cache->content_types = panels_common_get_allowed_types('panels_mini', $cache->display->context);

  $cache->display_title = TRUE;

  // @TODO support locking

  $cache->locked = FALSE;

  return $cache;

}

/**

 * Store a display edit in progress in the page cache.

 */

function panels_mini_panels_cache_set($key, $cache) {

  list($handler, $item) = _panels_mini_panels_cache_get($key);

  $item->mini_panels_display_cache = $cache;

  $handler->edit_cache_set_key($item, $key);

}

/**

 * Save all changes made to a display using the panels mini UI cache.

 */

function panels_mini_panels_cache_clear($key, $cache) {

  list($handler, $item) = _panels_mini_panels_cache_get($key);

  $handler->edit_cache_clear($item);

}

/**

 * Save all changes made to a display using the panels mini UI cache.

 */

function panels_mini_panels_cache_save($key, $cache) {

  list($handler, $item) = _panels_mini_panels_cache_get($key);

  $item->display = $cache->display;

  panels_mini_save($item);

  $handler->edit_cache_clear($item);

}

/**

 * Break the lock on a panels mini page.

 */

function panels_mini_panels_cache_break_lock($key, $cache) {

}

/**

 * Implements hook_panels_pre_render().

 */

function panels_mini_panels_pre_render($display, $renderer) {

  if (isset($display->owner->table) && $display->owner->table == 'panels_mini' && $renderer instanceof panels_renderer_standard) {

    $renderer->show_empty_layout = FALSE;

  }

}

/**

 * Implementation of hook_panels_dashboard_blocks().

 *

 * Adds mini panels information to the Panels dashboard.

 */

function panels_mini_panels_dashboard_blocks(&$vars) {

  $vars['links']['panels_mini'] = array(

    'title' => l(t('Mini panel'), 'admin/structure/mini-panels/add'),

    'description' => t('Mini panels are small content areas exposed as blocks, for when you need to have complex block layouts or layouts within layouts.'),

    'weight' => -1,

  );

  // Load all mini panels and their displays.

  $panel_minis = panels_mini_load_all();

  $count = 0;

  $rows = array();

  foreach ($panel_minis as $panel_mini) {

    $rows[] = array(

      check_plain($panel_mini->admin_title),

      array(

        'data' => l(t('Edit'), "admin/structure/mini-panels/list/$panel_mini->name/edit"),

        'class' => 'links',

      ),

    );

    // Only show 10.

    if (++$count >= 10) {

      break;

    }

  }

  if ($rows) {

    $content = theme('table', array('rows' => $rows, 'attributes' => array('class' => 'panels-manage')));

  }

  else {

    $content = '<p>' . t('There are no mini panels.') . '</p>';

  }

  $vars['blocks']['panels_mini'] = array(

    'weight' => -100,

    'title' => t('Manage mini panels'),

    'link' => l(t('Go to list'), 'admin/structure/mini-panels'),

    'content' => $content,

    'class' => 'dashboard-mini-panels',

    'section' => 'left',

  );

}

/**

 * Implements template_preprocess_ctools_wizard_trail().

 *

 * Customize the divider used in the CTools wizard to build the edit pages for

 * Mini Panels as a stop-gap measure until the UX can be completely re-done.

 */

function panels_mini_preprocess_ctools_wizard_trail(&$variables) {

  $variables['divider'] = ' | ';

  drupal_add_css(drupal_get_path('module', 'panels_mini') . '/panels_mini.css');

}