sllite.module

<?php
// $Id$

/**
 * @file
 * A module that adds Digg, del.icio.us, reddit, Technorati etc. links to nodes. Lite version.
 */
 
/**
 * Implementation of hook_init().
 */
function sllite_init() {
  drupal_add_css(drupal_get_path('module', 'sllite') . '/sllite.css');
}

/**
 * Implementation of hook_help().
 */
function sllite_help($path, $arg) {

}



/**
 * Implementation of hook_menu().
 */
function sllite_menu() {
  $items = array();
  $items['admin/settings/service_links_lite'] = array(
    'title' => 'Service links lite',
    'description' => 'Control which service links should be active.',
    'page callback' => 'drupal_get_form',
    'page arguments' => array('sllite_settings_form'),
    'access arguments' => array('administer service links lite'),
    'type' => MENU_NORMAL_ITEM,
  );
  return $items;
}

/**
 * Implementation of hook_perm().
 */
function sllite_perm() {
  return array('administer service links lite');
}

function sllite_settings_form() {
  require 'sllite.inc.php';
  
  $keys = array_keys($services);
  $service_list = drupal_map_assoc($keys);
  $enabled_services = variable_get('sllite_services_enabled', array());
  
  $form = array('#tree' => TRUE);
  
  $form['icon_size'] = array(
    '#type' => 'radios',
    '#title' => t('Choose your icon size'),
    '#default_value' => variable_get('sllite_icon_size', '16'),
    '#options' => array(16 =>t ('16x16'), 24 => t('24x24'), 48 => t('48x48'), 60=>t('60x60')),
    '#description' => t('desc.'),
  );
  
  $img_path = base_path() . drupal_get_path('module', 'sllite') . '/images/16/';
  
  foreach ($service_list as $service) {
    
    $form[$service]['name'] = array(
      '#value' => check_plain($service)
    );
    
    $form[$service]['image'] = array(
      '#value' => '<img src="' . $img_path . $service . '.png" />',
    );
    
    $form[$service]['enabled'] = array(
      '#title' => t('Enabled'),
      '#type' => 'checkbox',
      '#default_value' => (int)array_key_exists($service, $enabled_services),
    );
    
    $form[$service]['weight'] = array(
      '#type' => 'weight',
      '#delta' => 10,
      '#default_value' => isset($enabled_services[$service]) ? $enabled_services[$service] : 0,
      '#attributes' => array('class' => 'sllite-weight')
    );  
  }
  
  
  $form['submit'] = array(
		'#type' => 'submit',
		'#value' => t('Submit'),
	);
  return $form;
}

/**
 * Handle post-validation form submission.
 */
function sllite_settings_form_submit($form, &$form_state) {
  require 'sllite.inc.php';
  $enabled = array();
  foreach ($form_state['values'] as $key => $value) {
    if (array_key_exists($key, $services) && $value['enabled']) {
      $enabled[$key] = $value['weight'];
    }
  }
  asort($enabled);
  variable_set('sllite_icon_size', $form_state['values']['icon_size']);
  variable_set('sllite_services_enabled', $enabled);
  drupal_set_message(t('Your changes have been saved.'));
}

/**
 * Implementation of hook_block().
 */
function sllite_block($op = 'list', $delta = 0, $edit = array()) {
  switch ($op) {
    case 'list':
      $blocks[0]['info'] = t('Service Links Lite');
      $blocks[0]['status'] = FALSE;
      $blocks[0]['title'] = t('Share this page:');
      $blocks[0]['cache'] = BLOCK_CACHE_PER_PAGE; // VITAL that this block is cached PER PAGE
      return $blocks;
    case 'view':
      if ($delta == 0) {
        $block['subject'] = t('Share this page:');
        require 'sllite.inc.php';
        $path = base_path() . drupal_get_path('module', 'sllite');
        $service_links_enabled = variable_get('sllite_services_enabled', array());
        $icon_size = variable_get('sllite_icon_size', '16');
        $url = url($_GET['q'], array('absolute' => TRUE));
        $title = drupal_get_title();
        if (!$title) {
          $title = variable_get('site_name', '');
        } 
        foreach ($service_links_enabled as $k=>$weight) {
          $alt = $k . ' ' . t('icon');
          $href = explode('?', $services[$k]);
          $query = sprintf($href[1], $url, $title);
          $base = $href[0];
          $link_title = t('Share this page using ') . $k;
          $img_path = $path . '/images/' . $icon_size . '/' . $k . '.png';
          $links[] =  l('<img alt="' . $alt . '" src="' . $img_path . '" />', $base, array('html' => TRUE, 'absolute' => TRUE, 'query' => $query, 'attributes' => array('title' => $link_title)));
          $block['content'] = theme('item_list', $links, NULL, 'ul', array('class'=>'sllite'));
        }
      }
      return $block;    
    }

}

/**
 * Implementation of hook_theme().
 */
function sllite_theme() {
	return array(
		'sllite_settings_form' => array('arguments' => array('form' => NULL),),
	);
}

function theme_sllite_settings_form($form) {
  global $theme_key;
  drupal_add_tabledrag('sllite-admin', 'order', 'sibling', 'sllite-weight');
  // Build rows
  $rows = array();
  
  foreach (element_children($form) as $key) {
    // Generate block row
    if (isset($form[$key]['name'])) {
      $row = array(
        'data' => array (
          'name' => drupal_render($form[$key]['name']),
          'image' => drupal_render($form[$key]['image']),
          'enabled' => drupal_render($form[$key]['enabled']),
          'weight' => drupal_render($form[$key]['weight']),
        ),
        'class' => 'draggable',
      );
      $row['weight'] = $form[$key]['weight']['#value'];
      $rows[] = $row;  // to ensure they are in proper order
    }
  }
  
  usort($rows, '_sllite_cmp_ints');
  
  // Finish table
  $header = array(t('Service'), t(''), t('Enabled'), t('Weight'));
  $output = drupal_render($form['icon_size']);
  $output .= theme('table', $header, $rows, array('id' => 'sllite-admin'));
  $output .= drupal_render($form);

  return $output;
}

function _sllite_cmp_ints($a,$b) {
 $c = $a['weight'];
 $d = $b['weight'];
 if ($c == $d) return 0;
 if ($c < $d) return -1;
 else return 1;
}