From 1b647862393a6b4daf36494297c47f75c47ef78f Mon Sep 17 00:00:00 2001
From: Clemens <clemens@heypanda.de>
Date: Sat, 18 May 2013 02:15:09 +0200
Subject: [PATCH 1/3] fixed bug where headingOffsets went out-of-sync on window
 resize

---
 lib/toc.js | 53 +++++++++++++++++++++++++++++++++++------------------
 1 file changed, 35 insertions(+), 18 deletions(-)

diff --git a/lib/toc.js b/lib/toc.js
index ef8f0c0..436e24b 100644
--- a/lib/toc.js
+++ b/lib/toc.js
@@ -22,29 +22,46 @@ $.fn.toc = function(options) {
     $(e.target).parent().addClass(activeClassName);
   };
 
-  //highlight on scroll
-  var timeout;
-  var highlightOnScroll = function(e) {
-    if (timeout) {
-      clearTimeout(timeout);
-    }
-    timeout = setTimeout(function() {
-      var top = $(window).scrollTop(),
-        highlighted;
-      for (var i = 0, c = headingOffsets.length; i < c; i++) {
-        if (headingOffsets[i] >= top) {
-          $('li', self).removeClass(activeClassName);
-          highlighted = $('li:eq('+(i-1)+')', self).addClass(activeClassName);
-          opts.onHighlight(highlighted);
-          break;
-        }
+  var debounce = function(func, ms) {
+    var timeout;
+    return function() {
+      var that = this;
+      if (timeout) {
+        clearTimeout(timeout);
       }
-    }, 50);
+      var callThen = function() {
+        timeout = null;
+        func.call(that);
+      };
+      timeout = setTimeout(callThen, ms);
+    };
   };
+  
+  //highlight on scroll
+  var highlightOnScroll = debounce(function() {
+    var top = $(window).scrollTop(),
+      highlighted;
+    for (var i = 0, c = headingOffsets.length; i < c; i++) {
+      if (headingOffsets[i] >= top) {
+        $('li', self).removeClass(activeClassName);
+        highlighted = $('li:eq('+(i-1)+')', self).addClass(activeClassName);
+        opts.onHighlight(highlighted);
+        break;
+      }
+    }
+  }, 50);
   if (opts.highlightOnScroll) {
     $(window).bind('scroll', highlightOnScroll);
     highlightOnScroll();
   }
+  var recalculateOffsets = debounce(function() {
+	  headingOffsets.length = 0;
+	  headings.each(function(i, heading) {
+	      var $h = $(heading);
+	      headingOffsets.push($h.offset().top - opts.highlightOffset);
+	  });
+  }, 50);
+  $(window).bind('orientationchange resize', recalculateOffsets);
 
   return this.each(function() {
     //build TOC
@@ -97,4 +114,4 @@ jQuery.fn.toc.defaults = {
 
 };
 
-})(jQuery);
+})(jQuery);
\ No newline at end of file

From b52a99ab3943d8a94e5ca39800465695f1305e53 Mon Sep 17 00:00:00 2001
From: Clemens <clemens@heypanda.de>
Date: Sat, 18 May 2013 02:33:18 +0200
Subject: [PATCH 2/3] fixed mixed tabs and spaces

---
 lib/toc.js | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/lib/toc.js b/lib/toc.js
index 436e24b..50c5621 100644
--- a/lib/toc.js
+++ b/lib/toc.js
@@ -55,11 +55,11 @@ $.fn.toc = function(options) {
     highlightOnScroll();
   }
   var recalculateOffsets = debounce(function() {
-	  headingOffsets.length = 0;
-	  headings.each(function(i, heading) {
-	      var $h = $(heading);
-	      headingOffsets.push($h.offset().top - opts.highlightOffset);
-	  });
+    headingOffsets.length = 0;
+    headings.each(function(i, heading) {
+        var $h = $(heading);
+        headingOffsets.push($h.offset().top - opts.highlightOffset);
+    });
   }, 50);
   $(window).bind('orientationchange resize', recalculateOffsets);
 
@@ -114,4 +114,4 @@ jQuery.fn.toc.defaults = {
 
 };
 
-})(jQuery);
\ No newline at end of file
+})(jQuery);

From 660ab93a7e66d8016ff467aa91be81761b49975b Mon Sep 17 00:00:00 2001
From: Clemens Schneider <clemens@heypanda.de>
Date: Mon, 30 Sep 2013 11:26:15 +0200
Subject: [PATCH 3/3] calculate offsets only if needed (needs lots of time in
 case of large selector-item-size)

---
 lib/toc.js | 17 ++++++++++-------
 1 file changed, 10 insertions(+), 7 deletions(-)

diff --git a/lib/toc.js b/lib/toc.js
index 50c5621..0c119e4 100644
--- a/lib/toc.js
+++ b/lib/toc.js
@@ -50,18 +50,19 @@ $.fn.toc = function(options) {
       }
     }
   }, 50);
-  if (opts.highlightOnScroll) {
-    $(window).bind('scroll', highlightOnScroll);
-    highlightOnScroll();
-  }
   var recalculateOffsets = debounce(function() {
     headingOffsets.length = 0;
     headings.each(function(i, heading) {
-        var $h = $(heading);
+      var $h = $(heading);
         headingOffsets.push($h.offset().top - opts.highlightOffset);
     });
   }, 50);
-  $(window).bind('orientationchange resize', recalculateOffsets);
+  if (opts.highlightOnScroll) {
+    $(window).bind('scroll', highlightOnScroll);
+    $(window).bind('orientationchange resize', recalculateOffsets);
+    
+    highlightOnScroll();
+  }
 
   return this.each(function() {
     //build TOC
@@ -69,7 +70,9 @@ $.fn.toc = function(options) {
     var ul = $('<ul/>');
     headings.each(function(i, heading) {
       var $h = $(heading);
-      headingOffsets.push($h.offset().top - opts.highlightOffset);
+      if (opts.highlightOnScroll) {
+        headingOffsets.push($h.offset().top - opts.highlightOffset);
+      }
 
       //add anchor
       var anchor = $('<span/>').attr('id', opts.anchorName(i, heading, opts.prefix)).insertBefore($h);