infinite scroll implementation

js/infinite-scroll.js

@@ -0,0 +1,91 @@
+/*
+ * infinite-scroll.js
+ * https://github.com/vichan-devel/vichan/blob/master/js/infinite-scroll.js
+ *
+ * Released under the MIT license
+ * Copyright (c) 2013-2014 Marcin Łabanowski <marcin@6irc.net>
+ *
+ * Usage:
+ *   $config['additional_javascript'][] = 'js/jquery.min.js';
+ *   $config['additional_javascript'][] = 'js/infinite-scroll.js';
+ *
+ */
+
+$(function() {
+if (active_page == 'index') {
+
+
+var loading = false;
+
+var activate = function() {
+  if (document.location.hash != '#all') return false;
+
+  $(window).on("scroll", function() {
+    scrolltest();
+  });
+  scrolltest();
+
+  return true;
+};
+
+var scrolltest = function() {
+  if ($(window).scrollTop() + $(window).height() + 1000 > $(document).height() && !loading) {
+    load_next_page();
+  }
+};
+
+var load_next_page = function() {
+  if (loading) return;
+  loading = true;
+
+  var this_page = $(".pages a.selected:last");
+  var next_page = this_page.next();
+
+  var href = next_page.prop("href");
+  if (!href) return;
+
+  var boardheader = $('<h2>'+_('Page')+' '+next_page.html()+'</h2>');
+  var loading_ind = $('<h2>'+_('Loading...')+'</h2>').insertBefore('form[name="postcontrols"]>.delete:first');
+
+  $.get(href, function(data) {
+    var doc = $(data);
+    
+    loading_ind.remove();
+    boardheader.insertBefore('form[name="postcontrols"]>.delete:first');
+
+    var i = 0;
+
+    doc.find('div[id*="thread_"]').each(function() {
+      var checkout = $(this).attr('id').replace('thread_', '');
+      var $this = this;
+
+      if ($('div#thread_' + checkout).length == 0) {
+        // Delay DOM insertion to lessen the lag.
+        setTimeout(function() {
+          $($this).insertBefore('form[name="postcontrols"]>.delete:first');
+          $(document).trigger('new_post', $this);
+	  $($this).hide().slideDown();
+        }, 500*i);
+        i++;
+      }
+    });
+    setTimeout(function() {
+      loading = false;
+      scrolltest();        
+    }, 500*(i+1));
+
+    next_page.addClass('selected');
+  });
+
+};
+
+var button = $("<a href='#all'>"+_("All")+" </a>").prependTo(".pages");
+
+$(window).on("hashchange", function() {
+  return !activate();
+});
+activate();
+
+
+}
+});