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/**

 * @file

 * This is the task handler plugin to handle attaching a panel to any

 * task that advertises itself as a 'context' type, which all of the

 * basic page tasks provided by page_manager.module do by default.

 */

$plugin = array(

  // context handlers provided by ctools context plugins.

  'handler type' => 'context',

  'visible' => TRUE, // may be added up front.

  // Administrative fields.

  'title' => t('Panel'),

  'admin title' => 'panels_panel_context_title',

  'operations' => array(

    'settings' => array(

  // Callback to render the data.

  'render' => 'panels_panel_context_render',

  'addressable callback' => 'panels_panel_context_get_addressable',

  // Various callbacks for operations performed on the handler to ensure

 *   simply means that the display has been modified and is awaiting

 *   save. The modified one should always be used for editing purposes.

 * - If none of the above is true, then a new display needs to be created

 */

function &panels_panel_context_get_display(&$handler) {

  if (!isset($handler->conf['display'])) {

  ctools_include('context-task-handler');

  ctools_include('plugins', 'panels');

  $contexts = ctools_context_handler_get_handler_contexts($base_contexts, $handler);

  // Test.

    ctools_context_handler_pre_render($handler, $contexts, $args);

  }

  $display = panels_panel_context_get_display($handler);

  $display->context = $contexts;

    $css_id = 'panel_context:' . $handler->name;

    $filename = ctools_css_retrieve($css_id);

    if (!$filename) {

      $css = ctools_context_keyword_substitute($handler->conf['css'], array(), $contexts, array('css safe' => TRUE));

      $filename = ctools_css_store($css_id, $css);

    }

  $renderer = panels_get_renderer($handler->conf['pipeline'], $display);

  // If the IPE is enabled, but the user does not have access to edit

  // load the standard renderer instead.

  $parents = class_parents($renderer);

  if (!empty($parents['panels_renderer_editor']) && !user_access('user page manager') && !user_access('use ipe with page manager')) {

    $renderer = panels_get_renderer_handler('standard', $display);

  }

  $panel_body_css = &drupal_static('panel_body_css');

  if (isset($handler->conf['body_classes_to_remove'])) {

    if (!isset($panel_body_css['body_classes_to_remove'])) {

      $panel_body_css['body_classes_to_remove'] = check_plain($classes);

    }

      $panel_body_css['body_classes_to_remove'] .= ' ' . check_plain($classes);

    }

  }

  if (isset($handler->conf['body_classes_to_add'])) {

    $classes = ctools_context_keyword_substitute($handler->conf['body_classes_to_add'], array(), $contexts, array('css safe' => TRUE));

    if (!isset($panel_body_css['body_classes_to_add'])) {

    }

    else {

    }

  }

/**

 * When a handler is cloned, we have to clone the display.

 */

  $old_display = panels_panel_context_get_display($handler);

  $code = panels_export_display($old_display);

  eval($code);

  ctools_include('context');

  ctools_include('context-task-handler');

  $operations = page_manager_get_operations($page);

  // Get operations for just this handler.

  $output .= '<div class="clearfix">';

  if ($show_title) {

    $output .= '<div class="actions handler-actions">' . $rendered_operations['actions'] . '</div>';

    $output .= '<span class="title-label">' . $title . '</span>';

  }

  $output .= '</div>';

  $output .= $info;

  $output .= '</div>';

  $output .= '<div class="right-container">';

  $output .= '<h3 class="context-title">' . t('Contexts') . $context_link . '</h3>';

  $output .= $contexts;

  $output .= '</div>';

  $output .= '<div class="left-container">';

  $output .= '<h3 class="handler-title">' . t('Content') . $content_link . '</h3>';

  $output .= $content;

  $output .= '</div>';

  return $output;

}

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

/**

 * General notes about forms: The handler is automatically cached by the form

 * wizard, so anything we store on $form_state['handler'] anywhere will get

  $form = panels_change_layout($form, $form_state);

  // Change the 'back' button to just go directly to the previous form

  // This form is outside the normal wizard list, so we need to specify the

  // previous/next forms.

  $form['buttons']['previous']['#next'] = 'layout';

  panels_edit_display_form_submit($form, $form_state);

  $handler = &$form_state['handler'];

  $display = $form_state['page']->display_cache[$form_state['handler_id']]->display;

  $handler->conf['display'] = $display;

  unset($form_state['page']->display_cache[$form_state['handler_id']]);

}

/**

 */

function panels_panel_context_edit_settings($form, &$form_state) {

  $conf = $form_state['handler']->conf;

  $form['preview'] = array();

  ctools_context_replace_form($form['preview'], $contexts);

  if (empty($form['preview'])) {

    $display = panels_panel_context_get_display($form_state['handler']);

    $display->context = $contexts;

}

function panels_panel_context_get_addressable($task, $subtask_name, $handler, $address, $contexts, $arguments, $type) {

  $display = panels_panel_context_get_display($handler);

  $display->context = $contexts;