From c5fbd1f4d1dd2d4f4e21246baaf92b7cd4f810bd Mon Sep 17 00:00:00 2001
From: Jonathan Hedstrom <jhedstrom@gmail.com>
Date: Mon, 18 Jul 2011 10:50:27 -0700
Subject: [PATCH] - #535948: Add favicon next to external links.

---
 link.css    |    5 +++++
 link.module |   38 ++++++++++++++++++++++++++++++++++++++
 2 files changed, 43 insertions(+), 0 deletions(-)

diff --git a/link.css b/link.css
index 7bdec9e..d826fee 100644
--- a/link.css
+++ b/link.css
@@ -6,3 +6,8 @@ div.link-field-column {
 div.link-field-column .form-text {
   width: 95%;
 }
+
+img.link-favicon {
+  margin-right: 0.5em; /* RTL */
+  vertical-align: middle;
+}
\ No newline at end of file
diff --git a/link.module b/link.module
index 9e52de5..9707dbe 100644
--- a/link.module
+++ b/link.module
@@ -23,6 +23,11 @@ define('LINK_TARGET_USER', 'user');
 define('LINK_URL_MAX_LENGTH', 2048);
 
 /**
+ * URL to retrieve favicons from if using the favicon formatter.
+ */
+define('LINK_FAVICON_URL', 'https://s2.googleusercontent.com/s2/favicons?alt=p&domain=');
+
+/**
  * Implements hook_field_info().
  */
 function link_field_info() {
@@ -493,6 +498,9 @@ function link_theme() {
     'link_formatter_link_default' => array(
       'variables' => array('element' => NULL),
     ),
+    'link_formatter_link_favicon' => array(
+      'variables' => array('element' => NULL),
+    ),
     'link_formatter_link_plain' => array(
       'variables' => array('element' => NULL),
     ),
@@ -619,6 +627,11 @@ function link_field_formatter_info() {
       'field types' => array('link_field'),
       'multiple values' => FIELD_BEHAVIOR_DEFAULT,
     ),
+    'link_favicon' => array(
+      'label' => t('Title, as link, with image'),
+      'field types' => array('link_field'),
+      'multiple values' => FIELD_BEHAVIOR_DEFAULT,
+    ),
     'link_url' => array(
       'label' => t('URL, as link'),
       'field types' => array('link_field'),
@@ -681,6 +694,31 @@ function theme_link_formatter_link_default($vars) {
 }
 
 /**
+ * Theme function for 'favicon' link field formatter.
+ */
+function theme_link_formatter_link_favicon($vars) {
+  drupal_add_css(drupal_get_path('module', 'link') .'/link.css');
+
+  $link_options = $vars['element'];
+  unset($link_options['element']['title']);
+  unset($link_options['element']['url']);
+  $url = parse_url($vars['element']['url']);
+  $favicon_url = LINK_FAVICON_URL . $url['host'];
+  $favicon = theme('image', array('path' => $favicon_url, 'width' => 16, 'height' => 16, 'attributes' => array('class' => 'link-favicon')));
+  // Display a normal link if both title and URL are available.
+  if (!empty($vars['element']['title']) && !empty($vars['element']['url'])) {
+    return $favicon . l($vars['element']['title'], $vars['element']['url'], $link_options);
+  }
+  // If only a title, display the title.
+  elseif (!empty($vars['element']['title'])) {
+    return check_plain($vars['element']['title']);
+  }
+  elseif (!empty($vars['element']['url'])) {
+    return $favicon . l($vars['element']['title'], $vars['element']['url'], $link_options);
+  }
+}
+
+/**
  * Theme function for 'plain' text field formatter.
  */
 function theme_link_formatter_link_plain($vars) {
-- 
1.7.4.1