Fixed problems with multiple event handlers

Whenever DOM update event handlers were executed, jQuery bindings were appended
instead of being replaced. It resulted in funny scenarios like starting to show
multiple confirmation dialogs when trying to delete a post, after
adding/removing it from favorites.

public_html/media/js/comment-edit.js

@@ -3,15 +3,13 @@ $(function()
 	function onDomUpdate()
 	{
 		$('form.edit-comment textarea, form.add-comment textarea')
-			.off('change keyp')
-			.on('change keyup', function(e)
-			{
-				enableExitConfirmation();
-			});
+			.bindOnce('exit-confirmation', 'change keyp', function(e)
+		{
+			enableExitConfirmation();
+		});
 
 		$('form.edit-comment, form.add-comment')
-			.off('submit')
-			.on('submit', function(e)
+			.bindOnce('comment-submit', 'submit', function(e)
 		{
 			e.preventDefault();
 			rememberLastSearchQuery();
@@ -96,7 +94,7 @@ $(function()
 			$.ajax(ajaxData);
 		});
 
-		$('.comment .edit a').off('click').on('click').click(function(e)
+		$('.comment .edit a').bindOnce('edit-comment', 'click', function(e)
 		{
 			e.preventDefault();
 			var commentDom = $(this).parents('.comment');

public_html/media/js/core.js

@@ -37,6 +37,17 @@ $.fn.hasAttr = function(name)
 	return this.attr(name) !== undefined;
 };
 
+$.fn.bindOnce = function(name, eventName, callback)
+{
+	$.each(this, function(i, item)
+	{
+		if ($(item).data(name) == name)
+			return;
+		$(item).data(name, name);
+		$(item).on(eventName, callback);
+	});
+};
+
 
 
 //safety trigger
@@ -82,14 +93,14 @@ $(function()
 			}
 		}
 
-		$('form.confirmable').submit(confirmEvent);
-		$('a.confirmable').click(confirmEvent);
+		$('form.confirmable').bindOnce('confirmation', 'submit', confirmEvent);
+		$('a.confirmable').bindOnce('confirmation', 'click', confirmEvent);
 
 
 		//simple action buttons
-		$('a.simple-action').click(function(e)
+		$('a.simple-action').bindOnce('simple-action', 'click', function(e)
 		{
-			if(e.isPropagationStopped())
+			if (e.isPropagationStopped())
 				return;
 
 			e.preventDefault();
@@ -124,7 +135,7 @@ $(function()
 		//attach data from submit buttons to forms before .submit() gets called
 		$('.submit').each(function()
 		{
-			$(this).click(function()
+			$(this).bindOnce('submit-faux-input', 'click', function()
 			{
 				var form = $(this).closest('form');
 				form.find('.faux-submit').remove();

public_html/media/js/post-list.js

@@ -2,13 +2,9 @@ $(function()
 {
 	$('body').bind('dom-update', function()
 	{
-		$('.post a.toggle-tag').click(function(e)
+		$('.post a.toggle-tag').bindOnce('toggle-tag', 'click', function(e)
 		{
-			if(e.isPropagationStopped())
-				return;
-
 			e.preventDefault();
-			e.stopPropagation();
 
 			var aDom = $(this);
 			if (aDom.hasClass('inactive'))

public_html/media/js/post-view.js

@@ -2,7 +2,7 @@ $(function()
 {
 	function onDomUpdate()
 	{
-		$('#sidebar a.edit-post').click(function(e)
+		$('#sidebar a.edit-post').bindOnce('edit-post', 'click', function(e)
 		{
 			e.preventDefault();