contextual_view_modes_nodes.module in Contextual View Modes 7.2

File

modules/contextual_view_modes_nodes/contextual_view_modes_nodes.module

<?php

/**
 * Implements hook_form_alter().
 */
function contextual_view_modes_nodes_form_node_form_alter(&$form, &$form_state) {

  // Node for the node edit.
  $node = isset($form['#node']) ? $form['#node'] : NULL;
  list($nid, $vid, $bundle) = entity_extract_ids('node', $node);

  // Add the view modes vertical tab.
  $form['contextual_view_modes'] = array(
    '#type' => 'fieldset',
    '#title' => t('Contextual View Modes'),
    '#collapsible' => TRUE,
    '#collapsed' => TRUE,
    '#access' => user_access('set view modes per node'),
    '#group' => 'additional_settings',
    '#weight' => 100,
  );
  $context_options = contextual_view_modes_get_context_options();
  $view_modes_options = contextual_view_modes_get_view_mode_options('node');
  $count_context = count($context_options);

  // If there are no contexts available than let the user know.
  if ($count_context <= 1) {
    $vm['nothing']['#markup'] = "<p>" . t("Please %context_link before using contextual view modes.", array(
      "%context_link" => l('create a context', 'admin/structure/context/add'),
    )) . "</p>";
    return;
  }

  // If we have contexts explain how to use them.
  $form['contextual_view_modes']['help']['#markup'] = "<p><b>" . t("Instructions") . ":</b><p>" . t("This module uses the context module in order to trigger the view mode change. First, create a context with the conditions you wish to trigger the view mode change with. For example, if I wanted to change the view mode of this node by wether or not the user was logged in I would create a context with the condition of user role of authenticated. There is no need to add anything to the reactions portion of the context configuration. From the options below you can then select the name of that context and the view mode you wish to display to authenticated users. You can create additional view modes using the display suite module.") . "</p>";
  $form['contextual_view_modes']['cvm'] = array(
    '#type' => 'container',
    '#id' => "edit-cvm-wrapper",
    '#tree' => TRUE,
  );

  // Convenience variable.
  $vm =& $form['contextual_view_modes']['cvm'];
  $settings = variable_get("contextual_view_modes_node", array());
  if (empty($form_state['num_contexts'])) {
    $form_state['num_contexts'] = isset($settings[$vid]) ? count($settings[$vid]) : 0;
  }
  for ($delta = 0; $delta <= $form_state['num_contexts']; $delta++) {
    $vm['grouping'][$delta] = array(
      '#type' => 'fieldset',
      '#title' => t('Condition #') . ($delta + 1),
      '#collapsed' => FALSE,
      '#collapsible' => TRUE,
    );
    $vm['grouping'][$delta]['context_name'] = array(
      '#type' => 'select',
      '#options' => $context_options,
      '#title' => t('Context'),
      '#description' => t("When this context is active and the condition are met display the view mode below."),
      '#default_value' => isset($settings[$vid][$delta]['context_name']) ? $settings[$vid][$delta]['context_name'] : "",
    );
    $vm['grouping'][$delta]['view_mode'] = array(
      '#type' => 'select',
      '#options' => $view_modes_options,
      '#title' => t('View mode'),
      '#description' => t("Display this view mode when the above context is active."),
      '#default_value' => isset($settings[$vid][$delta]['view_mode']) ? $settings[$vid][$delta]['view_mode'] : "",
    );
  }
  $vm['add_nuther'] = array(
    '#type' => 'submit',
    '#value' => t('Add another'),
    '#name' => 'add-nuther' . $delta,
    '#submit' => array(
      'contextual_view_modes_add_nuther',
    ),
    '#ajax' => array(
      'callback' => 'contextual_view_modes_add_nuther_callback',
      'wrapper' => 'edit-cvm-wrapper',
    ),
  );

  // Add new submit handlers to this form.
  $form["#submit"][] = "contextual_view_modes_form_node_form_submit";
}

/**
 * [contextual_view_modes_add_nuther_callback description]
 * @return [type] [description]
 */
function contextual_view_modes_add_nuther_callback($form, $form_state) {
  return $form['contextual_view_modes']['cvm'];
}

/**
 * Submit handler for the "add-one-more" button.
 *
 * Increments the max counter and causes a rebuild.
 */
function contextual_view_modes_add_nuther($form, &$form_state) {
  $form_state['num_contexts']++;
  $form_state['rebuild'] = TRUE;
}

/**
 * Validate and remove bad merge groupings
 * @param  [type] $form        [description]
 * @param  [type] &$form_state [description]
 * @return [type]              [description]
 */
function contextual_view_modes_form_node_form_submit($form, &$form_state) {
  $values = $form_state['values'];

  // Remove empty options.
  foreach ($values['cvm']['grouping'] as $delta => $settings) {
    if (empty($settings['context_name']) || $settings['context_name'] == "none") {
      unset($form_state['values']['cvm']['grouping'][$delta]);
    }
    if (empty($settings['view_mode']) || $settings['view_mode'] == "none") {
      unset($form_state['values']['cvm']['grouping'][$delta]);
    }
  }

  // Re-key the values to avoid any gaps.
  sort($form_state['values']['cvm']['grouping']);
}

/**
 * Implements hook_node_insert().
 */
function contextual_view_modes_nodes_node_insert($node) {
  contextual_view_modes_nodes_node_update($node);
}

/**
 * Implements hook_node_update().
 */
function contextual_view_modes_nodes_node_update($node) {
  list($id, $vid, $bundle) = entity_extract_ids('node', $node);
  $settings = variable_get("contextual_view_modes_node", array());

  // If cvm is not around just go away.
  if (!isset($node->cvm)) {
    return;
  }
  $settings[$vid] = $node->cvm['grouping'];
  variable_set("contextual_view_modes_node", $settings);
}

Functions

Name	Description
contextual_view_modes_add_nuther	Submit handler for the "add-one-more" button.
contextual_view_modes_add_nuther_callback	[contextual_view_modes_add_nuther_callback description]
contextual_view_modes_form_node_form_submit	Validate and remove bad merge groupings
contextual_view_modes_nodes_form_node_form_alter	Implements hook_form_alter().
contextual_view_modes_nodes_node_insert	Implements hook_node_insert().
contextual_view_modes_nodes_node_update	Implements hook_node_update().