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// Copyright (c) 2000, 2002 - 2012 Bharath K A
//
// CREATED: Sunday March 29 11:08:13 CST 2009 by Bharath K A
//
// LAST CHANGED:
//
// AUTHOR: Bharath K A
//
// Copyright 2005 by Bharath K A
// All rights reserved.
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Linq;
using System.Text;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Drawing;
using System.Threading;
namespace BK.Util
{
[DefaultProperty("Text")]
[ToolboxData("<{0}:GridControlCometAjax runat=server></{0}:GridControlCometAjax>")]
public class GridControlCometAjax : Table
{
private String[,] dynTableContent;
private Color[,] dynTableColor;
private int rowCount, colCount;
private bool loadDS;
private object lockObj = new object();
private AutoResetEvent updateEvent;
public GridControlCometAjax()
{
loadDS = false;
updateEvent = new AutoResetEvent(false);
rowCount = this.Rows.Count;
if (rowCount == 0)
{
colCount = 0;
return;
}
else
{
colCount = this.Rows[0].Cells.Count;
}
dynTableContent = new String[rowCount,colCount];
dynTableColor = new Color[rowCount, colCount];
}
public void LoadControl(Page PageLoading)
{
string clientScript = @"<script type=""text/javascript"">
//<![CDATA[
{
function serverRequest" + this.ClientID + @"(args,context)
{
var objXmlDoc = new ActiveXObject(""Msxml2.DOMDocument"");
var url = ""~/GridControlCometAjax.ashx?" + this.ClientID + @""";
var req;
if (window.XMLHttpRequest && !(window.ActiveXObject))
{
try
{
req = new XMLHttpRequest();
}
catch (e)
{
req = false;
}
// branch for IE/Windows ActiveX version
}
else if (window.ActiveXObject)
{
try
{
req = new ActiveXObject(""Msxml2.XMLHTTP"");
}
catch (e)
{
try
{
req = new ActiveXObject(""Microsoft.XMLHTTP"");
}
catch (e)
{
req = false;
}
}
}
req.onreadystatechange=function()
{
try
{
if(req.readyState == 4 && req.status==200)
{
if (req.responseXML.childNodes.length != 0)
{
var NoOfRows = req.responseXML.childNodes(1).childNodes(0).childNodes(0).text;
var NoOfCells = req.responseXML.childNodes(1).childNodes(0).childNodes(1).text;
var Counter = 0;
var RowItem = 0;
var CellItem = 0;
for(RowItem = 0; RowItem < NoOfRows; RowItem++)
{
for(CellItem = 0; CellItem < NoOfCells; CellItem++)
{
if (document.getElementById('" + this.ClientID + @"').rows[RowItem].cells[CellItem].innerText != req.responseXML.childNodes(1).childNodes(1).childNodes(Counter).text)
{
document.getElementById('" + this.ClientID + @"').rows[RowItem].cells[CellItem].style.textDecorationUnderline = true;
document.getElementById('" + this.ClientID + @"').rows[RowItem].cells[CellItem].borderColor = req.responseXML.childNodes(1).childNodes(2).childNodes(Counter).text;
document.getElementById('" + this.ClientID + @"').rows[RowItem].cells[CellItem].innerText = req.responseXML.childNodes(1).childNodes(1).childNodes(Counter).text;
document.getElementById('" + this.ClientID + @"').rows[RowItem].cells[CellItem].style.color = req.responseXML.childNodes(1).childNodes(2).childNodes(Counter).text;
}
else
{
document.getElementById('" + this.ClientID + @"').rows[RowItem].cells[CellItem].style.textDecorationUnderline = false;
document.getElementById('" + this.ClientID + @"').rows[RowItem].cells[CellItem].borderColor = """";
document.getElementById('" + this.ClientID + @"').rows[RowItem].cells[CellItem].style.color = ""Black"";
}
Counter++;
}
}
}
eval(""callServer" + this.ClientID + @"();"");
}
}
catch(e)
{
alert(""Error occured. Retry or Refresh the page"");
}
}
req.open(""POST"", url, true);
req.send(null);
}
function callServer" + this.ClientID + @"(){
serverRequest" + this.ClientID + @"(); } callServer" + this.ClientID + @"();}//]]>
</script>";
// string clientScript = @"<script type=""text/javascript"">
// //<![CDATA[
// {
// function serverRequest" + this.ClientID + @"(args,context)
// {
// var objXmlDoc = new ActiveXObject(""Msxml2.DOMDocument"");
//
// var url = ""~/GridControlCometAjax.ashx?" + this.ClientID + @""";
// var req = new ActiveXObject(""Microsoft.XMLHTTP"");
// req.onreadystatechange=function()
// {
// if(req.readyState == 4)
// {
//
// if (req.responseXML.childNodes.length != 0)
// {
// var NoOfRows = req.responseXML.childNodes(1).childNodes(0).childNodes(0).text;
// var NoOfCells = req.responseXML.childNodes(1).childNodes(0).childNodes(1).text;
// var Counter = 0;
// var RowItem = 0;
// var CellItem = 0;
//
// for(RowItem = 0; RowItem < NoOfRows; RowItem++)
// {
// for(CellItem = 0; CellItem < NoOfCells; CellItem++)
// {
// if (document.getElementById('" + this.ClientID + @"').rows[RowItem].cells[CellItem].innerText != req.responseXML.childNodes(1).childNodes(1).childNodes(Counter).text)
// {
// document.getElementById('" + this.ClientID + @"').rows[RowItem].cells[CellItem].style.textDecorationUnderline = true;
// document.getElementById('" + this.ClientID + @"').rows[RowItem].cells[CellItem].borderColor = req.responseXML.childNodes(1).childNodes(2).childNodes(Counter).text;
// document.getElementById('" + this.ClientID + @"').rows[RowItem].cells[CellItem].innerText = req.responseXML.childNodes(1).childNodes(1).childNodes(Counter).text;
// document.getElementById('" + this.ClientID + @"').rows[RowItem].cells[CellItem].style.color = req.responseXML.childNodes(1).childNodes(2).childNodes(Counter).text;
// }
// else
// {
// document.getElementById('" + this.ClientID + @"').rows[RowItem].cells[CellItem].style.textDecorationUnderline = false;
// document.getElementById('" + this.ClientID + @"').rows[RowItem].cells[CellItem].borderColor = """";
// document.getElementById('" + this.ClientID + @"').rows[RowItem].cells[CellItem].style.color = ""Black"";
// }
// Counter++;
// }
// }
//
// }
//
// eval(""callServer" + this.ClientID + @"();"");
// }
// }
// req.open(""POST"", url, true);
// req.send(null);
// }
//
// function callServer" + this.ClientID + @"(){
// serverRequest" + this.ClientID + @"(); } callServer" + this.ClientID + @"();}//]]>
// </script>";
PageLoading.Page.ClientScript.RegisterStartupScript(this.GetType(), "startup" + this.ClientID, clientScript);
LoadMultiMapOnce();
GridAsynchHandler.RegisterControl(this);
}
private void LoadMultiMapOnce()
{
if (!loadDS)
{
rowCount = this.Rows.Count;
if (rowCount == 0)
{
colCount = 0;
return;
}
else
{
colCount = this.Rows[0].Cells.Count;
}
dynTableContent = new String[rowCount, colCount];
dynTableColor = new Color[rowCount, colCount];
lock (lockObj)
{
for (int RowItem = 0; RowItem < rowCount; RowItem++)
{
for (int CellItem = 0; CellItem < colCount; CellItem++)
{
dynTableContent[RowItem, CellItem] = this.Rows[RowItem].Cells[CellItem].Text;
if (this.Rows[RowItem].Cells[CellItem].ForeColor == Color.Empty)
{
dynTableColor[RowItem, CellItem] = this.ForeColor;
}
else
{
dynTableColor[RowItem, CellItem] = this.Rows[RowItem].Cells[CellItem].ForeColor;
}
}
}
}
loadDS = true;
}
}
public override void RenderControl(HtmlTextWriter writer)
{
base.RenderControl(writer);
}
public void DynModifyTableItem(int Row, int Column, string ValueToReplace, bool SendUpdateNow)
{
lock (lockObj)
{
dynTableContent[Row, Column] = ValueToReplace;
}
if (SendUpdateNow)
{
DynUpdateAllClients();
}
}
public void DynModifyTableItemColor(int Row, int Column, Color ColorToModify, bool SendUpdateNow)
{
lock (lockObj)
{
dynTableColor[Row, Column] = ColorToModify;
}
if (SendUpdateNow)
{
DynUpdateAllClients();
}
}
public void DynModifyItemAndColor(int Row, int Column, string ValueToReplace, Color ColorToModify, bool SendUpdateNow)
{
lock (lockObj)
{
dynTableColor[Row, Column] = ColorToModify;
dynTableContent[Row, Column] = ValueToReplace;
}
if (SendUpdateNow)
{
DynUpdateAllClients();
}
}
internal string DynGetContent(int Row, int Col)
{
string retVal = "";
lock (lockObj)
{
retVal = dynTableContent[Row, Col];
}
return retVal;
}
internal Color DynGetColor(int Row, int Col)
{
Color retVal = Color.Black;
lock (lockObj)
{
retVal = dynTableColor[Row, Col];
}
return retVal;
}
public int DynRowCount
{
get
{
return rowCount;
}
}
public int DynColCount
{
get
{
return colCount;
}
}
public void DynUpdateAllClients()
{
updateEvent.Set();
}
internal AutoResetEvent UpdateEvent
{
get
{
return updateEvent;
}
}
}
}
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