twitter.pages.inc in Twitter 6.5

Page callbacks for Twitter module.

File

twitter.pages.inc

<?php

/**
 * @file
 * Page callbacks for Twitter module.
 */

/**
 * Twitter settings form.
 */
function twitter_admin_form() {
  $form['misc'] = array(
    '#type' => 'fieldset',
    '#title' => t('Miscellaneous settings'),
  );
  $form['misc']['twitter_import'] = array(
    '#type' => 'checkbox',
    '#title' => t('Import and display the Twitter statuses of site users who have entered their Twitter account information.'),
    '#default_value' => variable_get('twitter_import', 1),
  );
  $form['misc']['twitter_expire'] = array(
    '#type' => 'select',
    '#title' => t('Delete old statuses'),
    '#default_value' => variable_get('twitter_expire', 0),
    '#options' => array(
      0 => t('Never'),
    ) + drupal_map_assoc(array(
      604800,
      2592000,
      7776000,
      31536000,
    ), 'format_interval'),
  );
  $form['misc']['twitter_use_default_views'] = array(
    '#type' => 'checkbox',
    '#title' => t('Use default views'),
    '#description' => t('The module includes custom displays managed by the Views module. Disabling this option will remove the bundled views provided by the Twitter module, allowing them to be more easily customized and exported.'),
    '#default_value' => variable_get('twitter_use_default_views', TRUE),
  );
  $form['oauth'] = array(
    '#type' => 'fieldset',
    '#title' => t('OAuth Settings'),
    '#access' => module_exists('oauth_common'),
    '#description' => t('To enable OAuth based access for twitter, you must <a href="@url">register your application</a> with Twitter and add the provided keys here.', array(
      '@url' => 'https://dev.twitter.com/apps/new',
    )),
  );
  $form['oauth']['twitter_oauth_callback_url'] = array(
    '#type' => 'textfield',
    '#title' => t('Callback URL'),
    '#default_value' => variable_get('twitter_oauth_callback_url', TWITTER_OAUTH_CALLBACK_URL),
    '#description' => t('There is usually no need to modify this. Defaults to "%path".', array(
      '%path' => TWITTER_OAUTH_CALLBACK_URL,
    )),
  );
  $form['oauth']['twitter_consumer_key'] = array(
    '#type' => 'textfield',
    '#title' => t('OAuth Consumer key'),
    '#default_value' => variable_get('twitter_consumer_key', NULL),
  );
  $form['oauth']['twitter_consumer_secret'] = array(
    '#type' => 'textfield',
    '#title' => t('OAuth Consumer secret'),
    '#default_value' => variable_get('twitter_consumer_secret', NULL),
  );

  // Twitter external APIs settings.
  $form['twitter'] = array(
    '#type' => 'fieldset',
    '#title' => t('Twitter Settings'),
    '#description' => t('The following settings connect Twitter module with external APIs. ' . 'Change them if, for example, you want to use Identi.ca.'),
  );
  $form['twitter']['twitter_host'] = array(
    '#type' => 'textfield',
    '#title' => t('Twitter host'),
    '#default_value' => variable_get('twitter_host', TWITTER_HOST),
  );
  $form['twitter']['twitter_api'] = array(
    '#type' => 'textfield',
    '#title' => t('Twitter API'),
    '#default_value' => variable_get('twitter_api', TWITTER_API),
  );
  $form['twitter']['twitter_search'] = array(
    '#type' => 'textfield',
    '#title' => t('Twitter search'),
    '#default_value' => variable_get('twitter_search', TWITTER_SEARCH),
  );
  $form['twitter']['twitter_tinyurl'] = array(
    '#type' => 'textfield',
    '#title' => t('TinyURL'),
    '#default_value' => variable_get('twitter_tinyurl', TWITTER_TINYURL),
  );

  // Embed tweet settings.
  $form['embed'] = array(
    '#type' => 'fieldset',
    '#title' => t('Embed Tweet Settings'),
    '#description' => t('The following settings for rendering embedded tweets in your posts.'),
  );
  $form['embed']['twitter_media'] = array(
    '#type' => 'checkbox',
    '#title' => t('Display Media'),
    '#default_value' => variable_get('twitter_media', FALSE),
    '#description' => t('Display images, video and link previews referenced in the tweet.'),
  );
  $form['embed']['twitter_conversation'] = array(
    '#type' => 'checkbox',
    '#title' => t('Conversation view'),
    '#default_value' => variable_get('twitter_conversation', FALSE),
    '#description' => t('Include previous tweets in the reply thread.'),
  );
  $form['embed']['twitter_align'] = array(
    '#type' => 'radios',
    '#title' => t('Alignment'),
    '#options' => array(
      'none' => t('None'),
      'center' => t('Center'),
      'left' => t('Left'),
      'right' => t('Right'),
    ),
    '#default_value' => variable_get('twitter_align', 'none'),
    '#description' => t('Specifies whether the embedded Tweet should be floated left, right, or center in the page relative to the parent element'),
  );
  return system_settings_form($form);
}

/**
 * Form builder that lists Twitter accounts.
 *
 * @param object $account
 *   Optional user account.
 * @return
 *   A list of Twitter accounts and a form to add more.
 */
function twitter_user_settings($account = NULL) {

  // Verify OAuth keys.
  if (!twitter_api_keys()) {
    $variables = array(
      '@twitter-settings' => url('admin/settings/twitter/settings'),
    );
    $output = '<p>' . t('You need to authenticate at least one Twitter account in order to use the Twitter API. Please fill out the OAuth fields at <a href="@twitter-settings">Twitter Settings</a> and then return here.', $variables) . '</p>';
  }
  else {
    module_load_include('inc', 'twitter');
    if (!$account) {
      $twitter_accounts = twitter_load_accounts();
    }
    else {
      $twitter_accounts = twitter_twitter_accounts($account);
    }
    $output = '<p>';
    if (count($twitter_accounts)) {

      // List Twitter accounts.
      if (user_access('administer site configuration')) {
        $variables = array(
          '@run-cron' => url('admin/reports/status/run-cron', array(
            'query' => array(
              'destination' => 'admin/settings/twitter',
            ),
          )),
        );
        $output .= t('Tweets are pulled from Twitter by <a href="@run-cron">running cron</a>.', $variables) . ' ';
      }
      $variables = array(
        '@tweets' => url('tweets'),
      );
      $output .= t('You can view the full list of tweets at the <a href="@tweets">Tweets</a> view.', $variables);
      $output .= '</p>';
      $output .= drupal_get_form('twitter_account_list_form', $twitter_accounts);
    }
    else {

      // No accounts added. Inform about how to add one.
      $output = '<p>' . t('No Twitter accounts have been added yet. Click on the following button to add one.') . '</p>';
    }
    $add_account = array(
      '#type' => 'fieldset',
      '#title' => t('Add Twitter accounts'),
      '#weight' => 5,
      '#collapsible' => TRUE,
      '#collapsed' => FALSE,
      '#children' => '',
    );
    if (user_access('add authenticated twitter accounts')) {
      $add_account['#children'] .= drupal_get_form('twitter_auth_account_form');
    }
    if (user_access('add twitter accounts')) {
      $add_account['#children'] .= drupal_get_form('twitter_non_auth_account_form');
    }
    $output .= drupal_render($add_account);
  }
  return $output;
}

/**
 * Formats each Twitter account as a row within a form.
 */
function twitter_account_list_form($form_state, $twitter_accounts = array()) {
  $form['#tree'] = TRUE;
  $form['accounts'] = array();
  foreach ($twitter_accounts as $twitter_account) {
    $form['accounts'][] = _twitter_account_list_row($twitter_account);
  }
  if (!empty($twitter_accounts)) {
    $form['buttons']['submit'] = array(
      '#type' => 'submit',
      '#value' => t('Save changes'),
    );
  }
  return $form;
}

/**
 * Returns the form fields to manage a Twitter account.
 */
function _twitter_account_list_row($account) {
  $form['#account'] = $account;
  $form['id'] = array(
    '#type' => 'value',
    '#value' => $account->id,
  );
  $form['screen_name'] = array(
    '#type' => 'value',
    '#value' => $account->screen_name,
  );
  $form['image'] = array(
    '#value' => theme('image', $account->profile_image_url, '', '', array(
      'width' => 48,
      'height' => '48',
    ), FALSE),
  );
  $form['visible_name'] = array(
    '#value' => _twitter_user_profile($account->screen_name),
  );
  $form['description'] = array(
    '#value' => filter_xss($account->description),
  );
  if (user_access('administer twitter accounts')) {
    $user = user_load($account->uid);
    $form['user'] = array(
      '#value' => l($user->name, 'user/' . $account->uid),
    );
  }
  $form['auth'] = array(
    '#value' => $account
      ->is_auth() ? t('Yes') : t('No'),
  );
  $form['protected'] = array(
    '#value' => empty($account->protected) ? t('No') : t('Yes'),
  );
  $form['import'] = array(
    '#type' => 'checkbox',
    '#default_value' => $account->import ? $account->import : '',
  );
  if ($account->import == TRUE) {
    $form['import']['#suffix'] = l('View', 'tweets/' . $account->screen_name, array(
      'attributes' => array(
        'target' => '_blank',
      ),
    ));
  }
  if ($account
    ->is_auth()) {
    $form['mentions'] = array(
      '#type' => 'checkbox',
      '#default_value' => $account->mentions ? $account->mentions : '',
    );
    $form['is_global'] = array(
      '#type' => 'checkbox',
      '#default_value' => $account->is_global ? $account->is_global : '',
      '#attributes' => array(
        'title' => t('By enabling this option, anyone may post using it.'),
      ),
    );
  }
  else {
    $form['mentions'] = array(
      '#value' => '',
    );
    $form['is_global'] = array(
      '#value' => '',
    );
  }
  $form['delete'] = array(
    '#type' => 'checkbox',
  );
  return $form;
}

/**
 * Themes the list of Twitter accounts.
 */
function theme_twitter_account_list_form($form) {
  $header = array(
    '',
    t('Name'),
    t('Description'),
  );
  if (user_access('administer twitter accounts')) {
    $header[] = t('Added by');
  }
  $header = array_merge($header, array(
    t('Auth'),
    t('Private'),
    t('Tweets'),
    t('Mentions'),
    t('Global'),
    t('Delete'),
  ));
  $rows = array();
  foreach (element_children($form['accounts']) as $key) {
    $element =& $form['accounts'][$key];
    $row = array(
      drupal_render($element['image']),
      drupal_render($element['id']) . drupal_render($element['screen_name']) . drupal_render($element['visible_name']),
      drupal_render($element['description']),
    );
    if (user_access('administer twitter accounts')) {
      $row[] = drupal_render($element['user']);
    }
    $row = array_merge($row, array(
      drupal_render($element['auth']),
      drupal_render($element['protected']),
      drupal_render($element['import']),
      drupal_render($element['mentions']),
      drupal_render($element['is_global']),
      drupal_render($element['delete']),
    ));
    $rows[] = $row;
  }
  $output = theme('table', $header, $rows);
  $output .= drupal_render($form);
  return $output;
}

/**
 * Form submit handler for altering the list of Twitter accounts.
 */
function twitter_account_list_form_submit($form, &$form_state) {
  $accounts = $form_state['values']['accounts'];
  foreach ($accounts as $account) {
    if (empty($account['delete'])) {
      twitter_account_save($account);
    }
    else {
      $twitter_account = twitter_account_load($account['id']);
      twitter_account_delete($account['id']);
      drupal_set_message(t('The Twitter account <em>!account</em> was deleted.', array(
        '!account' => $twitter_account->screen_name,
      )));
    }
  }
  drupal_set_message(t('The Twitter account settings were updated.'));
}

/**
 * Form to add an authenticated Twitter account.
 */
function twitter_auth_account_form(&$form_state) {
  $form['submit'] = array(
    '#type' => 'submit',
    '#value' => t('Go to Twitter to add an authenticated account'),
    '#prefix' => t('Authenticated accounts can post, sign in and pull mentions. ' . 'At least one authenticated account is needed for Twitter ' . 'module to work.</br>'),
  );
  return $form;
}

/**
 * Form validation for adding a new Twitter account.
 */
function twitter_auth_account_form_validate($form, &$form_state) {
  $key = variable_get('twitter_consumer_key', '');
  $secret = variable_get('twitter_consumer_secret', '');
  if ($key == '' || $secret == '') {
    form_set_error('', t('Please configure your consumer key and secret key at ' . '<a href="!url">Twitter settings</a>.', array(
      '!url' => url('admin/settings/twitter'),
    )));
  }
}

/**
 * Form submit handler for adding a Twitter account.
 *
 * Loads Twitter account details and adds them to the user account
 */
function twitter_auth_account_form_submit($form, &$form_state) {
  $key = variable_get('twitter_consumer_key', '');
  $secret = variable_get('twitter_consumer_secret', '');
  $oauth_callback = variable_get('twitter_oauth_callback_url', TWITTER_OAUTH_CALLBACK_URL);
  $callback_url = url($oauth_callback, array(
    'absolute' => TRUE,
  ));
  $twitter = new Twitter($key, $secret);
  $params = array(
    'oauth_callback' => $callback_url,
  );
  $token = $twitter
    ->get_request_token($params);
  if (!empty($token)) {
    $_SESSION['twitter_oauth']['token'] = $token;
    $_SESSION['twitter_oauth']['destination'] = $_GET['q'];
    drupal_goto($twitter
      ->get_authorize_url($token));
  }
  else {
    drupal_set_message(t('Could not obtain a valid token from the Twitter API. Please review the configuration.'), 'error');
  }
}

/**
 * Callback to process the response from the Twitter authentication.
 */
function twitter_oauth_callback(&$form_state) {
  if (isset($_GET['denied']) || empty($_GET['oauth_token'])) {
    drupal_set_message(t('The connection to Twitter failed. Please try again.'), 'error');
    global $user;
    if ($user->uid) {

      // User is logged in, was attempting to OAuth a Twitter account.
      drupal_goto('admin/settings/twitter');
    }
    else {

      // Anonymous user, redirect to front page.
      drupal_goto('<front>');
    }
  }
  $form['#post']['oauth_token'] = $_GET['oauth_token'];
  $form['oauth_token'] = array(
    '#type' => 'hidden',
    '#default_value' => $_GET['oauth_token'],
  );
  return $form;
}

/**
 * Validate results from Twitter OAuth return request.
 */
function twitter_oauth_callback_validate($form, &$form_state) {
  $key = variable_get('twitter_consumer_key', '');
  $secret = variable_get('twitter_consumer_secret', '');
  $error = FALSE;
  if (empty($key) || empty($secret)) {
    $error = TRUE;
  }
  else {
    if (isset($_SESSION['twitter_oauth'])) {
      $form_state['twitter_oauth'] = $_SESSION['twitter_oauth'];
      unset($_SESSION['twitter_oauth']);
    }
    else {
      $error = TRUE;
    }
    if (isset($form_state['twitter_oauth']['token'])) {
      $token = $form_state['twitter_oauth']['token'];
      if (!is_array($token) || empty($key) || empty($secret)) {
        $error = TRUE;
      }
      elseif (empty($token['oauth_token']) || empty($form_state['values']['oauth_token'])) {
        $error = TRUE;
      }
      elseif ($token['oauth_token'] != $form_state['values']['oauth_token']) {
        $error = TRUE;
      }
    }
    else {
      $error = TRUE;
    }
    if (!$error) {
      module_load_include('inc', 'twitter');
      if (!empty($token) && ($twitter = new Twitter($key, $secret, $token['oauth_token'], $token['oauth_token_secret']))) {

        // Append oauth_verifier from the querystring.
        if ($response = $twitter
          ->get_access_token($_GET['oauth_verifier'])) {
          $form_state['twitter_oauth']['response'] = $response;
        }
        else {
          $error = TRUE;
        }
      }
      else {
        $error = TRUE;
      }
    }
  }
  if ($error) {
    form_set_error('oauth_token', t('Invalid Twitter OAuth request'));
  }
}

/**
 * Handle a Twitter OAuth return request and store the account creds
 * in the DB.
 */
function twitter_oauth_callback_submit(&$form, &$form_state) {
  $key = variable_get('twitter_consumer_key', '');
  $secret = variable_get('twitter_consumer_secret', '');
  $response = $form_state['twitter_oauth']['response'];
  $twitter = new Twitter($key, $secret, $response['oauth_token'], $response['oauth_token_secret']);
  try {
    $twitter_account = $twitter
      ->users_show($response['screen_name']);

    // Save the new Twitter account and set the user's uid who added it.
    $twitter_account
      ->set_auth($response);
    global $user;
    $twitter_account->uid = $user->uid;
    twitter_account_save($twitter_account, TRUE);
    drupal_set_message(t('Twitter account added successfully'));
  } catch (TwitterException $e) {
    form_set_error('screen_name', t('Request failed: @message.', array(
      '@message' => $e
        ->getMessage(),
    )));
    return;
  }
  $form['#programmed'] = FALSE;
  $form_state['redirect'] = $form_state['twitter_oauth']['destination'];
}

/**
 * Form to add a non-authenticated Twitter account.
 */
function twitter_non_auth_account_form(&$form_state) {
  $form['screen_name'] = array(
    '#type' => 'textfield',
    '#required' => TRUE,
    '#title' => t('Twitter account name'),
    '#prefix' => t('If you simply want to pull tweets from additional Twitter accounts, enter the Twitter account name below and click on the following button.'),
  );

  // Track the user's ID. If this is the global Twitter accounts form, use the
  // current user's uid, it should be the accounts form for a specific user, so
  // try using that user's account.
  global $user;
  $uid = $user->uid;
  if (arg(0) == 'user' && arg(1) != '' && arg(2) == 'edit' && arg(3) == 'twitter') {
    $arg1 = arg(1);
    if (is_numeric($arg1)) {
      $uid = intval($arg1);
    }
  }
  $form['uid'] = array(
    '#type' => 'value',
    '#value' => $uid,
  );
  $form['submit_non_auth'] = array(
    '#type' => 'submit',
    '#value' => t('Add a non-authenticated account'),
  );
  return $form;
}

/**
 * Form validation for adding a new non-authenticated Twitter account.
 */
function twitter_non_auth_account_form_validate($form, &$form_state) {
  $screen_name = $form_state['values']['screen_name'];
  if (twitter_account_load($screen_name, FALSE)) {
    form_set_error('screen_name', t('The Twitter account <em>@screen_name</em> has been added already.', array(
      '@screen_name' => $screen_name,
    )));
  }
}

/**
 * Submit form handler to add a non-authenticated Twitter account.
 */
function twitter_non_auth_account_form_submit($form, &$form_state) {
  $name = $form_state['values']['screen_name'];
  $twitter = twitter_connect(NULL, TRUE, TRUE);
  if (empty($twitter)) {
    return FALSE;
  }
  $twitter_account = $twitter
    ->users_show($name, FALSE);
  if (!isset($twitter_account->id)) {
    form_set_error('screen_name', t('Could not add the Twitter account <em>@name</em>. ' . 'Check the recent messages log.', array(
      '@name' => $name,
    )));
  }
  else {
    $twitter_account->uid = $form_state['values']['uid'];
    twitter_account_save($twitter_account, FALSE);
    drupal_set_message(t('Twitter account added successfully'));
  }
}

Functions

Name	Description
theme_twitter_account_list_form	Themes the list of Twitter accounts.
twitter_account_list_form	Formats each Twitter account as a row within a form.
twitter_account_list_form_submit	Form submit handler for altering the list of Twitter accounts.
twitter_admin_form	Twitter settings form.
twitter_auth_account_form	Form to add an authenticated Twitter account.
twitter_auth_account_form_submit	Form submit handler for adding a Twitter account.
twitter_auth_account_form_validate	Form validation for adding a new Twitter account.
twitter_non_auth_account_form	Form to add a non-authenticated Twitter account.
twitter_non_auth_account_form_submit	Submit form handler to add a non-authenticated Twitter account.
twitter_non_auth_account_form_validate	Form validation for adding a new non-authenticated Twitter account.
twitter_oauth_callback	Callback to process the response from the Twitter authentication.
twitter_oauth_callback_submit	Handle a Twitter OAuth return request and store the account creds in the DB.
twitter_oauth_callback_validate	Validate results from Twitter OAuth return request.
twitter_user_settings	Form builder that lists Twitter accounts.
_twitter_account_list_row	Returns the form fields to manage a Twitter account.