From 96d446011bd340c8dc6362876d846e8b89e4341a Mon Sep 17 00:00:00 2001
From: Andrew Dolgov <fox@madoka.volgo-balt.ru>
Date: Mon, 22 Nov 2010 14:04:32 +0300
Subject: [PATCH] add support for twitter buttons

---
 config.php-dist |  3 +++
 functions.php   | 20 +++++++++++++++++++-
 tt-rss.php      |  4 ++++
 viewfeed.js     |  7 +++++++
 4 files changed, 33 insertions(+), 1 deletion(-)

diff --git a/config.php-dist b/config.php-dist
index 85e682cca..a7ab86283 100644
--- a/config.php-dist
+++ b/config.php-dist
@@ -171,6 +171,9 @@
 	define('SPHINX_INDEX', 'ttrss');
 	// Index name in Sphinx configuration
 
+	define('ENABLE_TWEET_BUTTON', false);
+	// Enable 'tweet this' button for articles
+
 	define('CONFIG_VERSION', 20);
 	// Expected config version. Please update this option in config.php
 	// if necessary (after migrating all new options from this file).
diff --git a/functions.php b/functions.php
index 1db2d2738..9133c482a 100644
--- a/functions.php
+++ b/functions.php
@@ -4736,6 +4736,14 @@
 			print_article_enclosures($link, $id, $always_display_enclosures, 
 				$article_content);
 
+			$short_title = truncate_string(strip_tags($line['title']), 90);
+
+			print "<a href=\"http://twitter.com/share\" 
+				class=\"twitter-share-button\" 
+				data-text=\"$short_title\"
+				data-url=\"".htmlspecialchars($line["link"])."\" 
+				data-count=\"horizontal\">Tweet</a>";
+
 			print "</div>";
 
 			print "</div>";
@@ -5160,7 +5168,8 @@
 						onclick=\"return cdmClicked(event, $id);\"
 						class=\"titleWrap$hlc_suffix\">
 						<a class=\"title\"
-						target=\"_blank\" href=\"".$line["link"]."\">".$line["title"].
+						target=\"_blank\" href=\"".
+						htmlspecialchars($line["link"])."\">".$line["title"].
 						" $entry_author</a>";
 
 					print $labels_str;
@@ -5251,6 +5260,15 @@
 					print_article_enclosures($link, $id, $always_display_enclosures,
 						$article_content);
 
+					$short_title = truncate_string(
+						strip_tags($line['title']), 90);
+
+					print "<a href=\"http://twitter.com/share\" 
+						class=\"twitter-share-button\" 
+						data-text=\"$short_title\"
+						data-url=\"".htmlspecialchars($line["link"])."\" 
+						data-count=\"horizontal\">Tweet</a>";
+
 					print "</div>";
 
 					print "<div class=\"cdmFooter\">";
diff --git a/tt-rss.php b/tt-rss.php
index 5b9d1f1fe..ceeca3581 100644
--- a/tt-rss.php
+++ b/tt-rss.php
@@ -39,6 +39,10 @@
 
 	<link rel="shortcut icon" type="image/png" href="images/favicon.png"/>
 
+	<?php if (ENABLE_TWEET_BUTTON) { ?>
+	<script src="http://platform.twitter.com/widgets.js" type="text/javascript"></script>
+	<?php } ?>
+
 	<script type="text/javascript" src="lib/prototype.js"></script>
 	<script type="text/javascript" src="lib/scriptaculous/scriptaculous.js?load=effects,dragdrop,controls"></script>
 	<script type="text/javascript" src="lib/dojo/dojo.js" djConfig="parseOnLoad: true"></script>
diff --git a/viewfeed.js b/viewfeed.js
index fc6fb9075..f9384fc17 100644
--- a/viewfeed.js
+++ b/viewfeed.js
@@ -104,6 +104,10 @@ function headlines_callback2(transport, feed_cur_page) {
 					dijit.byId("headlines-toolbar").attr('content',
 						headlines_toolbar.firstChild.nodeValue);
 
+					$$("#headlines-frame a.twitter-share-button").each(
+						function(btn) { var tbtn = new twttr.TweetButton(btn); 
+							tbtn.render(); });
+
 					initHeadlinesMenu();
 
 					var cache_prefix = "";
@@ -220,6 +224,9 @@ function render_article(article) {
 
 		correctHeadlinesOffset(getActiveArticleId());		
 
+		$$("#content-insert a.twitter-share-button").each(
+				function(btn) { var tbtn = new twttr.TweetButton(btn); tbtn.render(); });
+		
 	} catch (e) {
 		exception_error("render_article", e);
 	}