From 708125327434ec851100f2df1dbbaca241317b7f Mon Sep 17 00:00:00 2001
From: Jon Bergli Heier <snakebite@jvnv.net>
Date: Thu, 28 Jan 2010 00:36:38 +0100
Subject: Implemented dynamic highlighting of lines.

This currently only works when opening URLs with an anchor.
---
 pastepy.py          | 13 +++++++++++--
 static/paste.css    |  1 +
 static/view.js      |  5 +++++
 templates/view.tmpl |  1 +
 4 files changed, 18 insertions(+), 2 deletions(-)
 create mode 100644 static/view.js

diff --git a/pastepy.py b/pastepy.py
index cc5514d..67c2f44 100644
--- a/pastepy.py
+++ b/pastepy.py
@@ -5,6 +5,15 @@ from pygments.formatters import HtmlFormatter
 
 base62_alphabet = '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ'
 
+class CustomHtmlFormatter(HtmlFormatter):
+	def wrap(self, source, outfile):
+		yield 0, '<pre>'
+		line = 1
+		for i, t in source:
+			yield i, '<span id="codeline-%d">%s</span>' % (line, t)
+			line += 1
+		yield 0, '<pre>'
+
 class Paste(object):
 	def __init__(self):
 		lexers = dict([(x[0], x[1][0]) for x in get_all_lexers()])
@@ -20,7 +29,7 @@ class Paste(object):
 			except KeyError:
 				pass
 		self.lexers.append(('Others' if settings.categories else 'Syntax', sorted(lexers.items(), cmp = lambda a, b: cmp(a[0], b[0]))))
-		self.formatter = HtmlFormatter(linenos = 'table', lineanchors = 'line', anchorlinenos = True)
+		self.formatter = CustomHtmlFormatter(linenos = 'table', lineanchors = 'line', anchorlinenos = True)
 
 	def message(self, msg, title = 'Message'):
 		self.start_response('200 OK', [('Content-Type', 'text/html')])
@@ -153,7 +162,7 @@ class Paste(object):
 
 	def static(self):
 		filename = settings.static_root + os.path.sep + self.path[1]
-		if not self.path[1] in ('paste.css', 'edit.js') or not os.path.exists(filename):
+		if not self.path[1] in ('paste.css', 'edit.js', 'view.js') or not os.path.exists(filename):
 			self.start_response('404 Not Found', [('Content-Type', 'text/html'), ('Location', '/')])
 			return ['<a href="/">asdf</a>']
 		self.start_response('200 OK', [('Content-Type', mimetypes.guess_type(filename)[0] or 'text/plain')])
diff --git a/static/paste.css b/static/paste.css
index 11e15a0..e2139be 100644
--- a/static/paste.css
+++ b/static/paste.css
@@ -16,3 +16,4 @@ div#alt-links a { color: #44f; }
 .highlighttable pre { margin: 0; padding: 0; }
 .highlighttable .linenos { text-align: right; padding-left: .5em; padding-right: .5em; }
 .highlighttable .linenos a { color: #888; }
+.highlighttable .selected { display: block; background-color: #cfc; }
diff --git a/static/view.js b/static/view.js
new file mode 100644
index 0000000..c855609
--- /dev/null
+++ b/static/view.js
@@ -0,0 +1,5 @@
+window.onload = function() {
+	var line = 'code' + document.location.hash.substr(1);
+	var codeline = document.getElementById(line);
+	codeline.className = 'selected';
+}
diff --git a/templates/view.tmpl b/templates/view.tmpl
index 898a08e..267e87f 100644
--- a/templates/view.tmpl
+++ b/templates/view.tmpl
@@ -1,6 +1,7 @@
 #extends templates.base
 #def head
 		<link rel="StyleSheet" href="/highlight_stylesheet" type="text/css" />
+		<script type="text/javascript" src="/static/view.js"></script>
 #end def
 #def content
 		<p><a href="/">New paste</a></p>
-- 
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