Andrew Scott

HTML DOM reference via XMLHttprequest

Andrew Scott — Thu, 22 Sep 2005 11:34:00 GMT

Yesterday I blogged about creating new site using httpheaders, I will blog in the future about exactally how I did it.

But I have added a simple HTML DOM reference search to the site using XMLHttpRequest.

It's here http://km0ti0n.blunted.co.uk/reference.xap and it works in IE / FF / Opera and Safari!

There's another web application there (that's "WIP", well very old "WIP"!!!) that will return a greater depth of information.

Creating lightweight web sites with HttpHeaders

Andrew Scott — Wed, 21 Sep 2005 10:21:00 GMT

It been a long old while since last blog entry, and I felt it was long past time to make one!

Asp.net was my chosen backend quite a while back but as time when on and as I used it with more intensive GUI web applications I became to like it less and less. It wasn;t the codebehind that I disliked, in fact C# is a dream to write in, it was html content it generated. I understand why it had to do certain things to attain a greater modularity and appeal to a larger number of developers. With time I came choose Web Services as the my main means of comunication with the server as you had greater control over the content rendered.

Until, this is, I wanted to create a simple web site with some server logic using C#. I was going to use Web services to return xhtml content-type but as someone suggested "thats like used an SUV on a go-kart track!". So I used HttpHeaders, that let me define my own extention and process them as I wish the content returned is exactaly as I wanted.

So I decided to create a simple javascript reference site based on my httpheaders.

http://km0ti0n.blunted.co.uk

Simple Pie Chart Generator

Andrew Scott — Wed, 23 Mar 2005 18:21:00 GMT

Here's a simple Pie Chart Generator that I created today

Create a Bitmap for the Pie chart call DrawPie and then saves as a PNG.


        Bitmap oBmp  = new Bitmap(325, 200, PixelFormat.Format24bppRgb);
        Graphics oGraphic = Graphics.FromImage(oBmp);
        oGraphic.SmoothingMode = SmoothingMode.AntiAlias;
        
        oGraphic.Clear(Color.White);
        
        int [] nVals = new int[5];
        nVals[0] = 32;
        nVals[1] = 23;
        nVals[2] = 26;
        nVals[3] = 12;
        nVals[4] = 41;
        
        DrawPie(nVals, "Some Caption", oGraphic );
        
        string cFileName = DateTime.Now.Ticks.ToString() + ".png";
        
        oBmp.Save( "\\" + cFileName, ImageFormat.Png);
        oGraphic.Dispose();
        oBmp.Dispose();

This is the DrawPie method it pass it a collection of integers and the the Graphics Object and it will append the Chart to it.

    private static void DrawPie(int [] nVals, string cCaption, Graphics oGraphic)
    {
        int nTotalValue = 0;
        for( int i = 0; i < nVals.Length; i++ ){nTotalValue += nVals[i];}
        // find the % that one point is equal to.

        double nPointVal = (nTotalValue / 100.0);
        Pen oPen = new System.Drawing.Pen(Color.Gray, 1);
        float nStartOfsegment = 270;
    
        for(int i = 0; i < nVals.Length; i++ )
        {
            //for each value parsed find out how what % the value of the total amount parsed 
            float nPercentOfTotal =  (float)(nVals[i] / nPointVal) ;
            // and then what % it is of 360 degrees;
            float nPercentOfPie = (float)(nPercentOfTotal * 3.6 );
            // Render the Pie segment.
            
            Brush oBrush;
            switch(i)
            {
                case 0: oBrush = Brushes.Green; break;
                case 1: oBrush = Brushes.Red; break;
                case 2: oBrush = Brushes.Blue; break;
                case 3: oBrush = Brushes.Purple; break;
                case 4: oBrush = Brushes.Orange; break;
                case 5: oBrush = Brushes.OrangeRed; break;
                case 6: oBrush = Brushes.Orchid; break;
                case 7: oBrush = Brushes.DarkBlue; break;
                case 8: oBrush = Brushes.DarkGoldenrod; break;
                default :
                    oBrush = Brushes.Black;
                    break;
            }
            oGraphic.FillPie( oBrush, 10, 10, 100, 100, nStartOfsegment, nPercentOfPie );
            oGraphic.DrawPie( oPen, 10, 10, 100, 100, nStartOfsegment, nPercentOfPie );
                
            if( nStartOfsegment + nPercentOfPie >= 360 )
            {
                nStartOfsegment = nPercentOfPie - ( 360 - nStartOfsegment );
            }
            else
            {
                nStartOfsegment += nPercentOfPie;
            }
        }
        oGraphic.DrawString( cCaption, new Font("verdana", 12, FontStyle.Bold, GraphicsUnit.Pixel), SystemBrushes.WindowText, 23, 130);            
    }

Boo Ajax! Promote XAP!

Andrew Scott — Fri, 18 Mar 2005 19:51:00 GMT

I am sure you have all heard this expresion recently the web is a BUZZ with it.

Heres an article by h3h, aka Brad Fults, on the floors and reasons not to use it: Boo Ajax! Promote XAP!

I am going to be using XAP for here on as I can't stand this "Household Cleaner Phrase!"

Andy

Happy "1111111111111" second!

Andrew Scott — Fri, 18 Mar 2005 16:35:00 GMT

Today Fri Mar 18 2005 at 01:58:31 UTC is happy 1111111111111 second!

Base 10 since 1/1/1970

Try it your self:

    alert( new Date(1111111111111) );

Next big Second... 1234567891011

    alert( new Date(1234567891011) );

Which is Fri Feb 13 2009 at 23:31:31 UTC

Andy

Screen Scraping DotNetJunkies - oh and a host of other .Text sites

Andrew Scott — Thu, 17 Mar 2005 18:42:00 GMT

The what?

Here's a link to my DNJScraper. It works with most of the themes I have tested it with though if you see any error please send them to me :)

And Why?

Recently I have had to interface with old web applications. Due to a limitation in the database filesystem the application was written on (not being thread safe) Where as the web application it self was handling the threading. I decided to not access the file directly and interface via the old web application over HTTP.

Whilst readignan article in some linux magazine that showed you how to use Ruby to spyder a bloging engine as Ruby had "Great String manipulation and Network tools". I thought it's got to be eaiser to use .net's XMLDOM, so I've decided to do it with dotNetJunkies .Text, and it is alot eaiser!

Oh How?

Back in Febuary I bloged about HTML - XHTML a HTML to XHTML Conversion with SGMLReader tool that I was using. With that i mind here's the rest of the app.

To start Here's "SiteInterface.asms.cs" This is a simple class that can either POST or GET to any web site and return vaild XHTML.

using System;
using System.Collections;
using System.ComponentModel;
using System.Data;
using System.Diagnostics;
using System.Web;
using System.Web.Services;
/* Extra Namespaces Required */
using System.Text;        // Needed For UTF8Encoding
using System.Net;        // Needed For WebClient

namespace DNJScrape
{
    /// <summary>
    /// Summary description for SiteInterface.
    /// </summary>
    public class SiteInterface : System.Web.Services.WebService
    {
        public SiteInterface()
        {
            //CODEGEN: This call is required by the ASP.NET Web Services Designer
            InitializeComponent();
        }
        #region Component Designer generated code
        
        //Required by the Web Services Designer 
        private IContainer components = null;
                
        /// <summary>
        /// Required method for Designer support - do not modify
        /// the contents of this method with the code editor.
        /// </summary>
        private void InitializeComponent()
        {
        }
        /// <summary>
        /// Clean up any resources being used.
        /// </summary>
        protected override void Dispose( bool disposing )
        {
            if(disposing && components != null)
            {
                components.Dispose();
            }
            base.Dispose(disposing);        
        }
        
        #endregion
        /// <summary>
        /// Creates Vaild XHTML from 
        /// </summary>
        /// <param name="cHtml">Invalid Html string to be procesed</param>
        /// <returns></returns>
        [WebMethod]
        public string MakeValid( string cHtml )
        {
            string cXHTML = "";
            SgmlReaderDll.SGMLReaderHelper Reader = new SgmlReaderDll.SGMLReaderHelper();
            cXHTML = Reader.ProcessString(cHtml);
            return cXHTML;
        }

        /// <summary>
        /// Returns valid xhtml form any url using GET i.e. note the vars are appended this is how GET works
        /// </summary>
        /// <param name="cURL"> i.e. http://somedomain.com/default.aspx?var1=foo&var2=bar</param>
        /// <returns></returns>
        [WebMethod]
        public string LoadPageGET( string cURL )
        {
            WebClient oClient = new WebClient();
            UTF8Encoding oEncode = new UTF8Encoding();
            return this.MakeValid( oEncode.GetString( oClient.DownloadData( cURL ) ) );
        }

        /// <summary>
        /// Returns valid xhtml form any url
        /// using GET 
        /// ie http://somedomain.com/default.aspx
        /// the vars are posted to the server via Headers
        /// </summary>
        /// <param name="cURL"> i.e. http://somedomain.com/default.aspx</param>
        /// <param name="cParams">string "var1=foo&var2=bar"</param>
        /// <returns></returns>
        [WebMethod]
        public string LoadPagePOST( string cURL, string cParams )
        {
            WebClient oClient = new WebClient();
            UTF8Encoding oEncode = new UTF8Encoding();
            oClient.Headers.Add("Content-Type", "application/x-www-form-urlencoded");
            return this.MakeValid( oEncode.GetString( oClient.UploadData(cURL, "POST", Encoding.ASCII.GetBytes(cParams)) ) );
        }
    }
}

This is "DNJProcessing.asmx.cs" this is where the Blogs get processed. It contains 4 methods, all of which are [WebMethods] (I had ideas of creating an XAP / chubby client for it).

using System;
using System.Collections;
using System.ComponentModel;
using System.Data;
using System.Diagnostics;
using System.Web;
using System.Web.Services;
/* Extra Namespaces Required */
using System.Xml;        // Needed For Xml...
namespace DNJScrape
{
    /// <summary>
    /// Summary description for DNJProcessing.
    /// </summary>
    public class DNJProcessing : System.Web.Services.WebService
    {
        public SiteInterface oSiteInterface;
        public DNJProcessing()
        {
            //CODEGEN: This call is required by the ASP.NET Web Services Designer
            InitializeComponent();
            this.oSiteInterface = new SiteInterface();
        }
        #region Component Designer generated code
        
        //Required by the Web Services Designer 
        private IContainer components = null;
                
        /// <summary>
        /// Required method for Designer support - do not modify
        /// the contents of this method with the code editor.
        /// </summary>
        private void InitializeComponent()
        {
        }
        /// <summary>
        /// Clean up any resources being used.
        /// </summary>
        protected override void Dispose( bool disposing )
        {
            if(disposing && components != null)
            {
                components.Dispose();
            }
            base.Dispose(disposing);        
        }
        
        #endregion
        /// <summary>
        /// Query DNJ .Text weblog for the archive list of months that the user has blogs for
        /// </summary>
        /// <param name="cURL"> http://dotnetjunkies.com/weblog/kmotion/ </param>
        /// <returns>A collection of urls for ie http://dotnetjunkies.com/WebLog/kmotion/archive/2005/03.aspx and months</returns>
        [WebMethod]
        public ReturnObjs.MonthsArchive [] GetMonths( string cURL )
        {        
            // Create an XmlDocument
            XmlDocument oXHTML = new XmlDocument();
            // Get the XHTML for the give url using GET. And Load in to oXHTML
            oXHTML.LoadXml( this.oSiteInterface.LoadPageGET( cURL ) );
            //string cResult = "";
            // Select the <h3>Archives</h3> tag.  
            XmlNode oArchiveTitle        = oXHTML.SelectSingleNode("//h3[text()='Archives']");
            if( oArchiveTitle == null )
            {
                // scrape for this <h1 class = "listtitle">Archives</h1>
                oArchiveTitle        = oXHTML.SelectSingleNode("//h1[text()='Archives']");
            }
            
            // Select the <a> tags of the <ul> (Node Next to <h3> in the DOM).
            XmlNodeList oArchiveLinks    = oArchiveTitle.NextSibling.SelectNodes("li/a");
            // Create a ReturnObj;
            ReturnObjs.MonthsArchive [] oResult = new DNJScrape.ReturnObjs.MonthsArchive [oArchiveLinks.Count];
            int nCounter = 0;
            // Fill ReturnObj with Data
            foreach( XmlNode oMonth in oArchiveLinks )
            {
                oResult[nCounter]            = new ReturnObjs.MonthsArchive();
                // Take the textnodes value 
                oResult[nCounter].cMonth    = oMonth.FirstChild.Value;
                // Take the href attrib value
                oResult[nCounter].cUrl        = oMonth.SelectSingleNode("@href").Value;
                // Could do some string / regexp work with cMonth to obtain the number of posts

                nCounter++;
            }
            return oResult;
        }
        /// <summary>
        /// Query DNJ .Text weblog for the list of Posts for a given month
        /// </summary>
        /// <param name="cURL"> http://dotnetjunkies.com/WebLog/kmotion/archive/2005/03.aspx </param>
        /// <returns></returns>
        [WebMethod]
        public ReturnObjs.MonthPosts []  GetMonthPosts( string cURL )
        {
            // Create an XmlDocument
            XmlDocument oXHTML = new XmlDocument();
            // Get the XHTML for the give url using GET. And Load in to oXHTML
            oXHTML.LoadXml( this.oSiteInterface.LoadPageGET( cURL ) );
            // Select the links for each post <div class="post"><h5><a>This link</a></h5></div> 
            XmlNodeList oPosts        = oXHTML.SelectNodes("//div[@class='post']/h5/a");
            if( oPosts.Count == 0 )
            {
                //scrape for this <li class = "entrylistitem">
                oPosts        = oXHTML.SelectNodes("//li[@class='entrylistitem']/a");
            }
            // Create a ReturnObj;
            ReturnObjs.MonthPosts [] oResult = new DNJScrape.ReturnObjs.MonthPosts [oPosts.Count];
            int nCounter = 0;
            // Fill ReturnObj with Data
            foreach( XmlNode oPost in oPosts )
            {
                oResult[nCounter]                = new ReturnObjs.MonthPosts();
                // Take the textnodes value 
                oResult[nCounter].cPostTitle    = oPost.FirstChild.Value;
                // Take the href attrib value
                oResult[nCounter].cUrl            = oPost.SelectSingleNode("@href").Value;
                nCounter++;                
            }            
            return oResult;    
        }

        /// <summary>
        /// Query DNJ .Text weblog for the Post.
        /// </summary>
        /// <param name="cURL"> http://dotnetjunkies.com/WebLog/kmotion/archive/2005/03/14/60261.aspx </param>
        /// <returns></returns>
        [WebMethod]
        public XmlNode  GetPost( string cURL )
        {
            // Create an XmlDocument
            XmlDocument oXHTML = new XmlDocument();
            // Get the XHTML for the give url using GET. And Load in to oXHTML
            oXHTML.LoadXml( this.oSiteInterface.LoadPageGET( cURL ) );
            // Select the links for each post <div class="post"><h5><a>This link</a></h5></div> 
            XmlNode oPost        = oXHTML.SelectSingleNode("//div[@class='post']");
            if( oPost == null )
            {
                // scrape for this     <div class = "singlepost">
                oPost        = oXHTML.SelectSingleNode("//div[@class='singlepost']");
            }
            return oPost;
        }
    
        /// <summary>
        /// Query DNJ .Text weblog for all the Posts by a junkie!.
        /// </summary>
        /// <param name="cURL"> http://dotnetjunkies.com/WebLog/kmotion/archive/2005/03/14/60261.aspx </param>
        /// <returns></returns>
        [WebMethod]
        public string GetAllPosts( string cURL )
        {
            string cResult = "";
            ReturnObjs.MonthsArchive [] oMonths = this.GetMonths( cURL );
            foreach( ReturnObjs.MonthsArchive oMonth in oMonths )
            {
                ReturnObjs.MonthPosts [] oMonthPosts = this.GetMonthPosts( oMonth.cUrl );
                foreach( ReturnObjs.MonthPosts oMonthPost in oMonthPosts )
                {
                    cResult += this.GetPost( oMonthPost.cUrl ).OuterXml;
                }
            }
            return cResult;
        }
    }
}

The methods are :-

public ReturnObjs.MonthsArchive [] GetMonths( string cURL )

This method recives a URL that's the ROOT of the blogers area (http://dotnetjunkies.com/WebLog/kmotion/) . It returns the months the users has been bloging for and the respective URL's for theses months.

public ReturnObjs.MonthPosts [] GetMonthPosts( string cURL )

This method recives a URL that's the location of blogs for the given month (http://dotnetjunkies.com/WebLog/kmotion/archive/2005/03.aspx) . It returns a list of all the posts the users has made that month and the respective URL's for theses posts.

public XmlNode GetPost( string cURL )

This method recives a URL that's the location of the Post (http://dotnetjunkies.com/WebLog/kmotion/archive/2005/03/01/57618.aspx). It returns a Valid XHTML Node of the Post.

public string GetAllPosts( string cURL ) *PLEASE NOTE* - I have only used this once and I have disabled it but left the code in place. I thought is was a bit irrisponsible as it could put a heavy load on the DNJ servers if the number of posts the user has made is quite large.

This method recives a URL that's the ROOT of the blogers area ( http://dotnetjunkies.com/WebLog/kmotion/). It returns a Valid XHTML string of the ALL Posts made by that user.

This is "DNJScrape.ReturnObjs.MonthsArchive" and "DNJScrape.ReturnObjs.MonthPosts" These are some very simple classes to handle results from the Web Service.

using System;
namespace DNJScrape.ReturnObjs
{
    public class MonthsArchive
    {
        public MonthsArchive(){    }
        public string cMonth;
        public string cUrl;
    }
    
    public class MonthPosts
    {
        public MonthPosts()    {}
        public string cPostTitle;
        public string cUrl; 
    }
}

And Where?

Demo - DNJScraper is a simple ASP.NET application I used to wrap the web services.
Code - DNJScrape.zip is the compleate source for the application.

So What?

As It happens it also work for more .Text blog engines, not to surprising really but I don't think it will work on all. It's dependant ion the theme chosen by the bloger.

Have fun

Andy

Now playing: Metallica - WhereverIMayRoom

Get cash for gaming!

Andrew Scott — Mon, 14 Mar 2005 17:32:00 GMT

I just had to blog about this. No it's this isn't a get rich quick advert, and no I don't mean game testing or becoming the worlds number one at first person shoot'em ups. I talking about selling in game commodities/gold aka "Nothing"!

World Of Warcraft a Masive Multiplayer Role Play Game in which you can earn money and I guess a whole load of other things! But people are now selling Gold earnt in the game on ebay. It evan has it's own real life market value which is stronger that Stirling! 1.2 GBP is roughly equevliant to 1 WOWGC ( World of Warcraft Gold Coins ). This is a concept I am having great troubling comprehending!

Has anyone else seen this trading of ingame commodities on other games?

I'm thinking about buying a copy of the game and giving up the day job!

Blog tools for Alt. IDE's setup and some JS Native Object Expansion

Andrew Scott — Tue, 01 Mar 2005 21:12:00 GMT

A while ago read a post on Anders Norås' blog about New Year's "Cruft"! Everything must go! where he was listing what applications would honor has hard drive. One in the List that I was very interested in was Collin Coller’s CopySourceAsHtml that enables the generation of HTML from VS.net.

I tried to use this application but as you can see from the screen shot below I use a white on black background in vs.net.

The result of using CopySourceAsHtml is that it directly copies the screen styles. And I appreciate that most developers don't use white on black so I this put me off. Also I tend to write alot of javascript and Collin's tool only works with C# (probably VB.net never tried).

Today I was reading XML Serialization - Conversion of XML Documents and Streams to Common Language Runtime Objects and Vice Versa where David Hayden had some C# that apperntly would run in Snippet Compiler, having never seen this before I decided to install it. To my Joy it exported HTML in the same way and it also handled Javascript syntax. As this is not going to be my primary IDE I don't mine having to use a non white on black envionment.

Anyway I thought I'd celebrate this discovery by posting a small chunk of some Native Javascript Object Expansion. That's to for example Natively a String() in Javascript doesn't have a .trim() method liek we have in C# and a host of other languages. Using prototyping we can expand the definition of a string and by adding a method to do this for us.

String.startsWith
String.endsWith
String.trim
String.toCharArray
String.reverse

Array.indexOf
Array.clear
Array.copy

String.padLeft     
String.prototype.padLeft = function(cChar, nLength)
{
    if( this.length < nLength )
    {
        var nExtraLen = nLength - this.length;
        var cTemp = "";
        for( var i = 0; i < nExtraLen; i++ )
        {
            cTemp += cChar;
        }
        cTemp += this;
    }
    else{alert("String Long than pad request");}
    return cTemp;
}

String.prototype.startsWith = function(sStart)
{
    return (this.substr(0,sStart.length)==sStart);
}

String.prototype.trim = function()
{
    var b=0,e=this.length -1;
    while(this.substr(b,1) == " ") b++;
    while(this.substr(e,1) == " ") e--;
    return this.substring(b,e+1);
}

String.prototype.toCharArray = function()
{
    var arrRet = new Array();
    for(var i=0;i<this.length;i++) arrRet.push(this.substr(i,1));
    return arrRet;
}

String.prototype.reverse = function()
{
    var a = new Array();
    for(var i=0;i<this.length;i++) a.push(this.substr(i,1));
    return a.reverse().join("");
}

String.prototype.deHTML = function()
{
    return this.replace(/&lt;/g,'<' ).replace(/&gt;/g,'>' ).replace(/&amp;/g,'&' ).replace(/&lt;/g,'<' );
}

Array.prototype.indexOf = function()
{
    if(arguments.length==1)
        for(var i=0;i<this.length;i++)
            if(this[i]==arguments[0])
                return i;

    return -1;
}

Array.prototype.clear = function()
{
    return this.splice(0,this.length);
}

Array.prototype.copy = function()
{
    return this.slice(0,this.length);
}

Now playing: Alanis Morissette - Can't Not

HTML - XHTML

Andrew Scott — Wed, 16 Feb 2005 17:46:00 GMT

When using contentEditable="true" on an object to enable a user to generate ther own HTML IE generates invalid XHTML.

For example :

<IMG src=image.gif border=0>

This should be :

<img src="image.gif" border="0"/>

Note the case, quotes and the closing tag. Even if the HTML used with pasteHTML() is well formed it generates HTML like the first example. I spend the best part of today trying to write a Regular Expression in javascript to convert it with no luck. Until I gaveup and tried to do it with C# and read HTML to XHTML Conversion with SGMLReader article by Peter Bromberg. Its a Helper / Wrapper class for Chris Lovett of Microsoft's SGMLReader.

With this Wrapper you can parse the HTML back to the server and process it to regerate fully valid XHTML. Once you have done this you can use System.XML to manipulate the document just as if it was always XHTML.

Blog map in the UK too!

Andrew Scott — Mon, 14 Feb 2005 15:09:00 GMT

I just though I'd add mine too :)

Forcing Garbage Collection on IE

Andrew Scott — Thu, 03 Feb 2005 20:54:00 GMT

The what?

I blogged a while back about a problem with an IE Memory leak with HTC's. The only solution on the MSDN ( Memory leak occurs when behaviors are dynamically removed ) was to change a setting in the Registry or force the page to reload.

The why?

Bascally the garbage collection was cleaning up th ehtc's until the page had been unloaded. And as far as I know there's know way of forcing IE to start garbage collection on the htc's.

This wasn't going to work as I didn't want to get all the users to fiddle with the registry and reloading the page was against what i was trying to achive which was seamless comunications between the client and the server.

The how?

The other day I thought... iFrames!!!! I could have a iframe object that I load of for heavy work with htc's that can then be unloaded, removed and rerendered.

 // Add Frame Function
function AddFrame(){
   oFrame = NewObj( "iFrame", {}, this, "" );
   oFrameDoc = window.frames[0].document;
   oFrameDoc.open();			
   oFrameDoc.write(GenStdHTML());
   NewObj( "script", {src:'cclgenlib.js'}, oFrameDoc, "", oFrameDoc  )
   oList = NewObj( "ccl:List", {}, oFrame.body, "", oFrameDoc  )
}

Add Frame renders a frame on the page and loads it the html from GenStdHTML. I had to add the script files hare as adding the js file in the GenStdHTML function cause the iframe to disapear! As you can see I am able to add another element to the iFrame (ccl:list) document this is another HTC control that is manulipated in the same way as if it was on the page contain g the iFrame.

 // Generate Base HTML for iFrame
function GenStdHTML(){
   var cHTML     = '<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">';
   cHTML        += '<html xmlns:ccl><head><title>CCL Widgets</title>';
   cHTML        += '<LINK href="style.css" type="text/css" rel="stylesheet">';
   cHTML        += '</head>';
   cHTML        += '<body></body></html>';
   return cHTML;
}

 // Remove Frame Function
function RemoveFrame(){		
   oFrameDoc.location = "blank";
   oFrameDoc = null;
   DelObj( oFrame, this );
   oFrame = null;
   AddFrame();
}

I set the location of the iFrame to "blank" so that it unloads and I then delete the iframe from the page.

 // Creates a new Element on screen
function NewObj( tag, a, p, t, d ){
   var o;
   if (!d){ d = document}
   o = d.createElement(tag);
   if (a)for (var att in a) o[att]=a[att];
   if (p) p.appendChild(o);
   if (t) o.appendChild(d.createTextNode(t));
   return o;
}

By doing this the memory usage on the application doesn't continually grow in the same way as it does normally.

Now playing: Pink Floyd - Knocking on Heaven's Door

Gmail only letting me give out 10!

Andrew Scott — Wed, 02 Feb 2005 20:05:00 GMT

After reading Jeffrey Palermo's post about gmail invites I though I'd best pass mine out. So if anyone wants an invite just ask...

The DNJ Exodus

Andrew Scott — Tue, 01 Feb 2005 20:22:00 GMT

It such a shame that so many GREAT blogers are dropping out of DNJ's. Of all the blogs communities i read this is by far the best.

I guess we can all learn from this, the fact that if you apps don't function well enough people are gonna look else where (I know that it's not .Text fault).

I'm gonna march on, using Blogjet to post here, and hope that this all gets resolved.

Sashidhar's Post's a good idea it would be great if all the "Deserters" ;) will cross post as it's a great shame if they were to leave this community. :( I know I can, and have, updated my RSS reader's feeds it's just... it's just... **SIGH**

Now playing: Pink Floyd - The Great Gig In the Sky

Visual Studio Debuging of Javscript

Andrew Scott — Mon, 31 Jan 2005 14:29:00 GMT

I am sure we all aggree that the debuger in Visual Studio is a very powerfull tool. Though I use very infrequently as I have been doing alot of Javascript front end coding recently and hadn't realised that it was possible to debug Javascript in the same way as a .net app.

Alerts and a little debug area on the application was the best option untill I read this artical Debugging DHTML Applications off http://www.alphafilter.com/. The author explains how to attach to the browser process add breakpoints and view var values.

Great tool for the Wild Blue Yonder of Javascript;

Now playing: Muse - New Born

A micro wiki that's getting chubby!

Andrew Scott — Fri, 28 Jan 2005 19:29:00 GMT

For some time now i have been looking for "notepad/jotter" style web site where a team of developers can log problems and solutions.

Obviously a wiki was going to be the best solution. I have seen and used many different wiki's but they were either php based or too cumbersum to use so I never actually got round to setting one up... until now...

TiddlyWiki is a javascript clientside wiki which has a great user interface and makes editing so quick. But there's no means of saves the changed content back to the server. I have modified the wiki to use a .net web services to save any changes made on the site seamlessly.

Here's Mine! - Check it out and don't worry about changing stuff it's a wiki!

If you want the source I'll zip it and stick a copy on the site. Thought be warned it's running on a development box!

Now playing: pink floyd - Comfetable Numb