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<?php
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// $Id: cck_redirection.module,v 1.1.4.2 2008/10/31 21:51:55 morrissinger Exp $
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/**
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* @file
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* Provides a CCK field and widget for providing a URL to which to redirect the user.
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*/
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/*********************************************************************
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* Constants
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*/
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define('CCK_REDIRECTION_DIVERT', 0x000);
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define('CCK_REDIRECTION_DELAY', 0x001);
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define('CCK_REDIRECTION_FRAMESET', 0x002);
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define('CCK_REDIRECTION_NONE', 0x003);
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/*********************************************************************
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* Drupal Hooks
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*/
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/**
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* Implementation of hook_menu().
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*/
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function cck_redirection_menu() {
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// JS
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$items['cck_redirection/js'] = array(
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'page callback' => 'cck_redirection_js',
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'access arguments' => array('access content'),
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'type' => MENU_CALLBACK,
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);
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// Frameset Redirection
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$items['redirect'] = array(
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'page callback' => 'cck_redirection_frameset',
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'access arguments' => array('access content'),
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'type' => MENU_CALLBACK,
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);
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// Header page in frameset redirection
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$items['cck_redirection/header'] = array(
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'page callback' => 'cck_redirection_frameset_header',
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'access arguments' => array('access content'),
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'type' => MENU_CALLBACK,
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);
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return $items;
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}
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/**
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* Implementation of hook_theme().
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*/
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function cck_redirection_theme() {
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return array(
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'cck_redirection' => array(
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'arguments' => array('element' => NULL),
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),
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'cck_redirection_frameset' => array( // Show the new page in the bottom half of a frameset (think Google Images)
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'template' => 'cck-redirection-frameset',
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'arguments' => array('uri' => NULL, 'element' => NULL),
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),
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'cck_redirection_frameset_header' => array( // Theme the header on a frameset
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'template' => 'cck-redirection-frameset-header',
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),
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'cck_redirection_delay_msg' => array( // Themes a JS Delay message (i.e. "This node will redirect to ___ in five seconds...")
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'arguments' => array('element' => NULL)
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),
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'cck_redirection_formatter_default' => array( // Suppress
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'arguments' => array('element' => NULL),
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),
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'cck_redirection_formatter_link' => array( // Show as link
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'arguments' => array('element' => NULL),
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),
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'cck_redirection_formatter_plain' => array( // Show as plain text
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'arguments' => array('element' => NULL),
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),
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);
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}
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/**
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* Implementation of hook_perm().
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*/
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function cck_redirection_perm() {
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return array('bypass redirection');
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}
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/**
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* Implementation of hook_nodeapi().
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*/
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function cck_redirection_nodeapi(&$node, $op, $a3 = NULL, $a4 = NULL) {
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if ($op == 'view') {
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$GLOBALS['cck_redirection_teaser'] = $a3;
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$GLOBALS['cck_redirection_page'] = $a4;
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}
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}
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/**
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* Implementation of hook_form_alter().
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*
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* This hook is used to add custom validation to the addition of new or
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* existing fields to a node type. This is to make sure that a user
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* does not add two or more cck_redirection fields to a given node type.
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* While this does not present any inherent danger, this should be
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* prevented because the cck_redirection field module will only look at
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* one cck_redirection field anyway. After all, we will never have the
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* opportunity to redirect the same user to two different sites
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* at the same time in the same browser window.
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*/
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function cck_redirection_form_alter(&$form, $form_state, $form_id) {
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if ($form_id == 'content_admin_field_main') {
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$form['#validate'][] = 'cck_redirection_content_admin_field_main_validate';
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}
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// We don't want the user to be able to have this field work with multiple values, so we will
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// hide this option from the admin when he is configuring the field.
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if ($form_id == '_content_admin_field' && $form['main']['type']['#value'] == 'cck_redirection') {
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$form['field']['multiple']['#type'] = 'hidden';
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$form['field']['multiple']['#value'] = $form['field']['multiple']['#default_value'];
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}
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}
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/*********************************************************************
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* FAPI Hooks
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*/
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/**
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* Implementation of FAPI hook_elements().
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*/
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function cck_redirection_elements() {
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return array(
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'cck_redirection' => array(
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'#input' => TRUE,
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'#columns' => array('value'),
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'#delta' => 0,
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'#process' => array('cck_redirection_process'),
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'#autocomplete_path' => FALSE,
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),
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);
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}
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/*********************************************************************
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* CCK Hooks: Fields
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*/
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/**
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* Implementation of hook_field_info().
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*/
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function cck_redirection_field_info() {
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return array(
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'cck_redirection' => array(
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'label' => 'Redirection',
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'description' => t('Store a URI in the database (up to 255 characters).'),
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),
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);
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}
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/**
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* Implementation of hook_field_settings().
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*/
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function cck_redirection_field_settings($op, $field) {
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switch ($op) {
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case 'form':
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return array();
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case 'validate':
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break;
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case 'save':
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return array();
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case 'database columns':
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$columns = array(
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'value' => array(
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'type' => 'varchar',
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'length' => 255,
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'not null' => FALSE,
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'sortable' => TRUE,
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'default value' => NULL,
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),
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);
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return $columns;
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case 'filters':
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return array();
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}
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}
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/**
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* Implementation of hook_field().
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*/
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function cck_redirection_field($op, &$node, $field, &$items, $teaser, $page) {
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switch ($op) {
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case 'validate':
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// TODO: Do URI validation here.
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break;
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}
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}
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/*********************************************************************
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* CCK Hooks: Field Formatters
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*/
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/**
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* Implementation of hook_field_formatter_info().
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*/
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function cck_redirection_field_formatter_info() {
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return array(
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'default' => array(
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'label' => t('Suppress'),
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'field types' => array('cck_redirection'),
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),
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'link' => array(
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'label' => t('Show as Link'),
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'field types' => array('cck_redirection'),
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),
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'plain' => array(
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'label' => t('Show as Plain Text'),
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'field types' => array('cck_redirection'),
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),
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);
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}
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/*********************************************************************
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* CCK Hooks: Widgets
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*/
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/**
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* Implementation of hook_widget_info().
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*/
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function cck_redirection_widget_info() {
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return array(
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'cck_redirection' => array(
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'label' => 'Text field',
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'field types' => array('cck_redirection'),
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'multiple values' => CONTENT_HANDLE_CORE,
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'callbacks' => array(
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'default value' => CONTENT_CALLBACK_DEFAULT,
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),
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),
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);
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}
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/**
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* Implementation of hook_widget_settings().
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*/
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function cck_redirection_widget_settings($op, $widget) {
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switch ($op) {
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case 'form':
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$form = array();
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$description = NULL;
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$description .= t('Select the manner in which redirection should take place. Options are:') . '<ul>';
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$description .= '<li>' . t('Divert: Show the target URI page, instead of the node.') . '</li>';
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$description .= '<li>' . t('Delay: Show the node, and redirect after five seconds.') . ' <strong>' . t('Note: You should display this field in %d, to give the user some warning of redirection.', array('%d' => t('Display fields'))) . '</strong></li>';
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$description .= '<li>' . t('Frameset: Show a frameset with some basic site information at the top, and the target URI page in the main frame.') . '</li>';
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$description .= '<li>' . t('None: Do not redirect. This may be useful for theming or other development purposes.') . '</li</ul>';
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$form['redirect_type'] = array(
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'#type' => 'select',
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'#title' => t('Redirection type'),
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'#default_value' => is_numeric($widget['redirect_type']) ? $widget['redirect_type'] : CCK_REDIRECTION_DIVERT,
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'#description' => $description,
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'#options' => _cck_redirection_redirect_types(),
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);
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return $form;
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case 'validate':
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break;
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case 'save':
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return array('redirect_type');
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}
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}
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/**
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* Implementation of hook_widget().
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*/
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function cck_redirection_widget(&$form, &$form_state, $field, $items, $delta = 0) {
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$element = array(
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'#type' => 'cck_redirection',
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'#default_value' => isset($items[$delta]['value']) ? $items[$delta]['value'] : NULL,
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);
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return $element;
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}
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/*********************************************************************
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* CCK Hooks: Misc.
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*/
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/**
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* Implementation of hook_content_is_empty().
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*/
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function cck_redirection_content_is_empty($item, $field) {
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if (empty($item['value'])) {
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return TRUE;
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}
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return FALSE;
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}
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/*********************************************************************
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* CCK Hooks: Installation, etc.
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*/
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/**
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* Implementation of hook_install().
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*/
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function cck_redirection_install() {
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content_notify('install', 'cck_redirection');
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}
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/**
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* Implementation of hook_uninstall().
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*/
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function cck_redirection_uninstall() {
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content_notify('uninstall', 'cck_redirection');
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}
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/**
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* Implementation of hook_enable().
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*/
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function cck_redirection_enable() {
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content_notify('enable', 'cck_redirection');
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}
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/**
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* Implementation of hook_disable().
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*/
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function cck_redirection_disable() {
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content_notify('disable', 'cck_redirection');
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}
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/*********************************************************************
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* Page Callbacks
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*/
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/**
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* CCK Redirection Javascript
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*
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* @param $uri
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* A valid URI to redirect to,
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*/
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function cck_redirection_js() {
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$uri = $_SESSION['cck_redirection']['#item']['value'];
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$field_name = $_SESSION['cck_redirection']['#field_name'];
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$element = $_SESSION['cck_redirection'];
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$id = str_replace("_", "-", "field-$field_name");
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unset($_SESSION['cck_redirection']);
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echo '
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$(document).ready(function(){
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$(".' . $id . ' .field-items .field-item").text("' . theme('cck_redirection_delay_msg', $element) . '");
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setTimeout("cck_redirection_redirect()", 5000);
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});
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function cck_redirection_redirect() {
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window.location=\'' . $uri . '\';
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}
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';
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}
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/**
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* CCK Redirection with Frameset
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*/
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function cck_redirection_frameset() {
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$uri = urldecode(check_plain($_GET['uri']));
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$element = $_SESSION['cck_redirection'];
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unset($_SESSION['cck_redirection']);
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print theme('cck_redirection_frameset', $uri, $element);
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exit();
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}
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/**
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* Header for CCK Redirection with Frameset
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*/
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function cck_redirection_frameset_header() {
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print theme('cck_redirection_frameset_header');
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exit();
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}
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/*********************************************************************
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* Form Callbacks
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*/
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/**
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* Process an individual element.
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*
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* Build the form element. When creating a form using FAPI #process,
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* note that $element['#value'] is already set.
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*
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* The $fields array is in $form['#field_info'][$element['#field_name']].
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*/
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function cck_redirection_process($element, $edit, $form_state, $form) {
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$field = $form['#field_info'][$element['#field_name']];
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$field_key = $element['#columns'][0];
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$delta = $element['#delta'];
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$element[$field_key] = array(
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'#type' => 'textfield',
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'#title' => $element['#title'],
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'#description' => $element['#description'],
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'#required' => $element['#required'],
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'#default_value' => isset($element['#value']) ? $element['#value'] : NULL,
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'#autocomplete_path' => $element['#autocomplete_path'],
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);
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if (!empty($field['max_length'])) {
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$element[$field_key]['#maxlength'] = $field['max_length'];
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}
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if (!empty($field['text_processing'])) {
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$filter_key = $element['#columns'][1];
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$format = isset($element['#value'][$filter_key]) ? $element['#value'][$filter_key] : FILTER_FORMAT_DEFAULT;
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$parents = array_merge($element['#parents'] , array($filter_key));
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$element[$filter_key] = filter_form($format, 1, $parents);
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}
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return $element;
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}
|
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/**
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| 420 |
* Validates the addition of a new or existing field to a content type.
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| 421 |
*
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| 422 |
* Ensures that only one cck_redirection field exists per node type.
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| 423 |
*/
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| 424 |
function cck_redirection_content_admin_field_main_validate($form, $form_state) {
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| 425 |
$values = $form_state['values'];
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| 426 |
$fields = _cck_redirection_get_redirect_fields($values['type_name']); // $values['type_name'] is the node type.
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| 428 |
if(!empty($fields) && $values['type'] == 'cck_redirection') { //$values['type'] is the field type.
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form_set_error('field_name', t('A Redirection field already exists for this node type. You may only redirect the browser to one site at a time.'));
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| 430 |
}
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| 431 |
}
|
| 432 |
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| 433 |
/*********************************************************************
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| 434 |
* Theme Functions
|
| 435 |
*/
|
| 436 |
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/**
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| 438 |
* Theme a cck redirection widget.
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| 439 |
*/
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| 440 |
function theme_cck_redirection($element) {
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return $element['#children'];
|
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}
|
| 443 |
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/**
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| 445 |
* Theme a message to display to the user when using the "delay" redirect method.
|
| 446 |
*/
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| 447 |
function theme_cck_redirection_delay_msg($element) {
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return t('This page will redirect to !url in five seconds...', array('!url' => $element['#item']['value']));
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}
|
| 450 |
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/**
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| 452 |
* Theme a frameset.
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| 453 |
*/
|
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function template_preprocess_cck_redirection_frameset(&$vars) {
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| 455 |
global $base_url;
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| 456 |
$element = $vars['element'];
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| 457 |
$vars['node'] = $element['#node'];
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| 458 |
$vars['header_uri'] = $base_url . '/cck_redirection/header';
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}
|
| 460 |
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/**
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| 462 |
* Theme a frameset header.
|
| 463 |
*/
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| 464 |
function template_preprocess_cck_redirection_frameset_header(&$vars) {
|
| 465 |
template_preprocess_page($vars);
|
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}
|
| 467 |
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| 468 |
/**
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| 469 |
* Theme function for 'default' CCK_Redirection field formatter.
|
| 470 |
*/
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| 471 |
function theme_cck_redirection_formatter_default($element) {
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| 472 |
$method = _cck_redirection_redirect($element);
|
| 473 |
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| 474 |
return NULL;
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| 475 |
}
|
| 476 |
|
| 477 |
/**
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| 478 |
* Theme function for 'link' CCK_Redirection field formatter.
|
| 479 |
*/
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| 480 |
function theme_cck_redirection_formatter_link($element) {
|
| 481 |
$method = _cck_redirection_redirect($element);
|
| 482 |
|
| 483 |
$text = $element['#item']['value'];
|
| 484 |
return l(check_plain($text), $text);
|
| 485 |
}
|
| 486 |
|
| 487 |
/**
|
| 488 |
* Theme function for 'plain' CCK_Redirection field formatter.
|
| 489 |
*/
|
| 490 |
function theme_cck_redirection_formatter_plain($element) {
|
| 491 |
$method = _cck_redirection_redirect($element);
|
| 492 |
|
| 493 |
$text = $element['#item']['value'];
|
| 494 |
return check_plain($text);
|
| 495 |
}
|
| 496 |
|
| 497 |
/*********************************************************************
|
| 498 |
* Helper Functions
|
| 499 |
*/
|
| 500 |
|
| 501 |
/**
|
| 502 |
* Returns all redirect fields for a given node type.
|
| 503 |
*
|
| 504 |
* @param $type
|
| 505 |
* A node type.
|
| 506 |
* @ return
|
| 507 |
* An array of fields, as returned by _content_type_info, keyed
|
| 508 |
* by field name.
|
| 509 |
*/
|
| 510 |
function _cck_redirection_get_redirect_fields($type) {
|
| 511 |
$info = _content_type_info();
|
| 512 |
$fields = array();
|
| 513 |
$fields = $info['content types'][$type]['fields'];
|
| 514 |
|
| 515 |
$cck_redirection_fields = array();
|
| 516 |
|
| 517 |
foreach((array)$fields as $key => $field) {
|
| 518 |
if ($field['type'] == 'cck_redirection') {
|
| 519 |
$cck_redirection_fields[$key] = $field;
|
| 520 |
}
|
| 521 |
}
|
| 522 |
|
| 523 |
return $cck_redirection_fields;
|
| 524 |
}
|
| 525 |
|
| 526 |
/**
|
| 527 |
* Returns whether or not $value is a valid URI.
|
| 528 |
*
|
| 529 |
* @param $value
|
| 530 |
* A value to check.
|
| 531 |
* @return
|
| 532 |
* TRUE if a valid URI. FALSE if not.
|
| 533 |
*/
|
| 534 |
function _cck_redirection_validate_uri($value) {
|
| 535 |
$pattern = "/https?:\/\/[-\w.]+(:\d+)?(\/([\w\/_.]*)?)?/";
|
| 536 |
$works = preg_match($pattern, $value);
|
| 537 |
return $works;
|
| 538 |
}
|
| 539 |
|
| 540 |
/**
|
| 541 |
* Return an array of CCK Redirection types.
|
| 542 |
*/
|
| 543 |
function _cck_redirection_redirect_types() {
|
| 544 |
return array(
|
| 545 |
CCK_REDIRECTION_DIVERT => t('Divert'),
|
| 546 |
CCK_REDIRECTION_DELAY => t('Delay'),
|
| 547 |
CCK_REDIRECTION_FRAMESET => t('Frameset'),
|
| 548 |
CCK_REDIRECTION_NONE => t('None'),
|
| 549 |
);
|
| 550 |
}
|
| 551 |
|
| 552 |
/**
|
| 553 |
* Accomplish redirection using the widget settings.
|
| 554 |
*/
|
| 555 |
function _cck_redirection_redirect(&$element) {
|
| 556 |
$teaser = $GLOBALS['cck_redirection_teaser'];
|
| 557 |
$page = $GLOBALS['cck_redirection_page'];
|
| 558 |
|
| 559 |
$method = NULL;
|
| 560 |
|
| 561 |
if ($page) {
|
| 562 |
$node = $element['#node'];
|
| 563 |
$field = content_fields($element['#field_name'], $node->type);
|
| 564 |
$widget = $field['widget'];
|
| 565 |
|
| 566 |
$method = is_numeric($widget['redirect_type']) ? $widget['redirect_type'] : NULL;
|
| 567 |
|
| 568 |
if (user_access('bypass redirection')) {
|
| 569 |
if (!empty($element['#item']['value'])) {
|
| 570 |
drupal_set_message(t('This node is redirected to a !r.', array('!r' => l(t('remote URI'), $element['#item']['value']))));
|
| 571 |
}
|
| 572 |
} else {
|
| 573 |
switch ($widget['redirect_type']) {
|
| 574 |
case CCK_REDIRECTION_DIVERT:
|
| 575 |
_cck_redirection_divert($element);
|
| 576 |
break;
|
| 577 |
case CCK_REDIRECTION_DELAY:
|
| 578 |
_cck_redirection_delay($element);
|
| 579 |
break;
|
| 580 |
case CCK_REDIRECTION_FRAMESET:
|
| 581 |
_cck_redirection_frameset($element);
|
| 582 |
break;
|
| 583 |
default:
|
| 584 |
// This takes care of CCK_REDIRECTION_NONE by doing nothing
|
| 585 |
break;
|
| 586 |
}
|
| 587 |
}
|
| 588 |
}
|
| 589 |
|
| 590 |
return $method;
|
| 591 |
}
|
| 592 |
|
| 593 |
/**
|
| 594 |
* Diverts the browser to the target URI page.
|
| 595 |
*/
|
| 596 |
function _cck_redirection_divert($element) {
|
| 597 |
if (!empty($element['#item']['value'])) {
|
| 598 |
drupal_goto($element['#item']['value']);
|
| 599 |
}
|
| 600 |
}
|
| 601 |
|
| 602 |
/**
|
| 603 |
* Uses JS to delay redirection by five seconds, and then diverts the browser to the target URI page.
|
| 604 |
*/
|
| 605 |
function _cck_redirection_delay($element) {
|
| 606 |
if (!empty($element['#item']['value'])) {
|
| 607 |
$_SESSION['cck_redirection'] = $element;
|
| 608 |
drupal_add_js('cck_redirection/js');
|
| 609 |
}
|
| 610 |
}
|
| 611 |
|
| 612 |
/**
|
| 613 |
* Displays the target URI inside of a frameset.
|
| 614 |
*/
|
| 615 |
function _cck_redirection_frameset($element) {
|
| 616 |
if (!empty($element['#item']['value'])) {
|
| 617 |
$_SESSION['cck_redirection'] = $element;
|
| 618 |
drupal_goto('redirect', 'uri=' . drupal_urlencode($element['#item']['value']));
|
| 619 |
}
|
| 620 |
}
|
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