contextual_view_modes_users.module in Contextual View Modes 7.2

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modules/contextual_view_modes_users/contextual_view_modes_users.module

<?php

/**
 * Implements hook_form_alter().
 */
function contextual_view_modes_users_form_user_profile_form_alter(&$form, &$form_state) {
  $user = isset($form['#user']) ? $form['#user'] : NULL;
  list($uid) = entity_extract_ids('user', $user);

  // 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 user'),
    '#weight' => 50,
  );
  $context_options = contextual_view_modes_get_context_options();
  $view_modes_options = contextual_view_modes_get_view_mode_options('user');
  $count_context = count($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 user 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'];
  $settings = variable_get("contextual_view_modes_user", array());
  if (empty($form_state['num_contexts'])) {
    $form_state['num_contexts'] = isset($settings[$uid]) ? count($settings[$uid]) : 0;
  }
  for ($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[$uid][$delta]['context_name']) ? $settings[$uid][$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[$uid][$delta]['view_mode']) ? $settings[$uid][$delta]['view_mode'] : "",
    );
  }
  $vm['add_nuther'] = array(
    '#type' => 'submit',
    '#value' => t('Add another'),
    '#name' => 'add-nuther' . $delta,
    '#submit' => array(
      'contextual_view_modes_user_add_nuther',
    ),
    '#ajax' => array(
      'callback' => 'contextual_view_modes_user_add_nuther_callback',
      'wrapper' => 'edit-cvm-wrapper',
    ),
  );

  // Add new submit handlers to this form before the user is saved.
  array_unshift($form["#submit"], "contextual_view_modes_user_form_user_form_submit");
}

/**
 * [contextual_view_modes_add_nuther_callback description]
 * @return [type] [description]
 */
function contextual_view_modes_user_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_user_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_user_form_user_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'][$delta]);
      unset($form_state['input']['cvm']['grouping'][$delta]);
      continue;
    }
    if (empty($settings['view_mode']) || $settings['view_mode'] == "none") {
      unset($form_state['values']['cvm']['grouping'][$delta]);
      unset($form_state['input']['cvm']['grouping'][$delta]);
    }
  }

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

/**
 * Implements hook_user_insert().
 */
function contextual_view_modes_users_user_insert($user) {
  contextual_view_modes_users_user_update($user);
}

/**
 * Implements hook_user_update().
 */
function contextual_view_modes_users_user_update($user) {
  $uid = $user['original']->uid;
  $settings = variable_get("contextual_view_modes_user", array());
  $settings[$uid] = $user['cvm']['grouping'];
  variable_set("contextual_view_modes_user", $settings);
}

Functions

Name	Description
contextual_view_modes_users_form_user_profile_form_alter	Implements hook_form_alter().
contextual_view_modes_users_user_insert	Implements hook_user_insert().
contextual_view_modes_users_user_update	Implements hook_user_update().
contextual_view_modes_user_add_nuther	Submit handler for the "add-one-more" button.
contextual_view_modes_user_add_nuther_callback	[contextual_view_modes_add_nuther_callback description]
contextual_view_modes_user_form_user_form_submit	Validate and remove bad merge groupings