background.html

<script>

	var tabIds = new Array();
	var blackListHash = new Array();

	chrome.tabs.onCreated.addListener( function(tab) {
		visitingUrl( tab );
	});
	
	chrome.tabs.onUpdated.addListener( function( tabId, changeInfo, tab ) {
		visitingUrl( tab );		
	});
	
	chrome.tabs.onSelectionChanged.addListener(function(tabId, info) { 
		chrome.tabs.get(tabId, function(tab){
				checkForBlackList( getSiteRoot(tab.url), tab.url);
			});		
	});
	
	function visitingUrl( tab )
	{
		if(tab.url && (tab.url.indexOf("chrome://") != 0) && (tab.url.indexOf("chrome-extension://") != 0)){
			console.log( "visiting " + tab.id + " " + tab.url);	
			
			if(!tabIds[tab.id]){
				tabIds[tab.id] = new Array();
			}
			
			tabIds[tab.id].push( tab.url );
			checkForBlackList( getSiteRoot(tab.url), tab.url);
		}
	}
	
	function checkForBlackList(root, url)
	{
		if( blackListHash[ root ] ){
			console.log("this site is blacklisted!");
			chrome.browserAction.setIcon( { 'path':'icons/black_list_icon.png' } );
			console.log("deleting: " + url);
			chrome.history.deleteUrl( {'url':url} );
		}
		else{
			chrome.browserAction.setIcon( { 'path':'icons/default_icon.png' } );
		}
	}
	
	function deleteAll()
	{
		console.log("deleting all");
		chrome.history.deleteAll(function(){
		});
	}
	
	function deleteTabHistory()
	{
		chrome.tabs.getSelected(null, function( tab ){
			console.log("deleting tab " + tab.id);
			var hist = tabIds[tab.id];
			
			for(x in hist ){
				console.log( "deleting url " + hist[x] );
				chrome.history.deleteUrl( {'url': hist[x]} );
			}				
		});
	}
	
	function deleteLast(time)
	{
		console.log("deleting last " + time);
		var currTime = new Date().getTime();
		var hourAgo = currTime - time;
		chrome.history.deleteRange( { 'startTime':hourAgo, 'endTime':currTime }, function(){} );
	}
	
	function deleteCurrentSiteRoot()
	{
		console.log("deleting root");
		
		chrome.tabs.getSelected(null, function(tab) {
			var root = getSiteRoot( tab.url );
			
			chrome.history.search( { 'text':'', 'maxResults':9999999 }, function(result) {
				for(x in result){
					if( result[x].url.indexOf(root) >= 0){
						console.log("deleting " + result[x].url);
						chrome.history.deleteUrl( {"url":result[x].url} );
					}
				}
			});			
		});	
	}	
	
	function getSiteRoot(url)
	{
		var index = url.indexOf("://");
		
		if( index >= 0){
			url = url.substring(index + 3);	
		}
		
		index = url.indexOf("www.");
		
		if(index >= 0){
			url = url.substring(index + 4);
		}
		
		index = url.indexOf('/');
		
		if(index >= 0){
			url = url.substring(0, index);
		}
		
		return url;
	}
	
	function addToBlacklist(root, url)
	{
		console.log("adding to blacklist");
		
		if(!localStorage['blackList'] || localStorage['blackList']==''){
			localStorage['blackList'] = root;
		}
		else{
			localStorage['blackList'] += ',' + root;
		}
		
		blackListHash[root] = true;
		checkForBlackList( root, url );
	}
	
	function removeFromBlackList(root, url)
	{
		console.log("remove from blacklist");
		var blarray = localStorage['blackList'].split(',');
		var newblarray = new Array();
		
		for(x in blarray)
			if( blarray[x] != root)
				newblarray.push( blarray[x] );
				
		localStorage['blackList'] = newblarray.join(',');
		updateBlackListHash();
		checkForBlackList( root, url );
	}
	
	function updateBlackListHash()
	{
		blackListHash = new Array();
		
		if(!localStorage['blackList'] || localStorage['blackList']==''){
			return;
		}
			
		var blarray = localStorage['blackList'].split(',');
		
		for(x in blarray){
			blackListHash[blarray[x]] = true;
			console.log('adding to blhash: ' + blarray[x]);
		}
	}
	
	document.onload = updateBlackListHash();

</script>