added thread highlighting based on last update vs last view

static/src/coffee/threads.coffee

@@ -0,0 +1,27 @@
+return unless window.localStorage?
+
+if window.location.pathname[1...7] == 'thread'
+	# When a thread is visited, save the latest post date is localStorage.
+	# First, ensure this is the last page of the thread. If not, don't
+	# mark this thread as 'visited', since latest replies are not being
+	# actually seen.
+	pages = document.querySelector 'div.pages'
+	return unless pages.dataset.current == pages.dataset.max
+	# grab latest post
+	posts = document.getElementById('replies').querySelectorAll 'article.post'
+	latest = posts[posts.length-1]
+	date = latest.querySelector('a.date').dataset.udate
+	if date?
+		surl = window.location.pathname.split('/')[2]
+		window.localStorage.setItem "lview_#{surl}", date
+else
+	# In home: for each thread, check if already viewed or not
+	window.fromList(document.querySelectorAll 'article.thread').map (thread) ->
+		# get last-modified date
+		date = thread.querySelector('span.date').dataset.udate
+		# compare with locally saved date, if any
+		surl = thread.querySelector('a').pathname.split('/')[2]
+		lview = window.localStorage.getItem("lview_#{surl}")
+		if lview? and lview == date
+			# no updates since latest visit
+			thread.querySelector('.thread-name').style.opacity = 0.7

template/layout.html

@@ -60,5 +60,6 @@
     <script src="/static/js/posts.js"></script>
     <script src="/static/js/complete.js"></script>
     <script src="/static/js/hiding.js"></script>
+    <script src="/static/js/threads.js"></script>
 </body>
 </html>