/* AspSupport.js
* functions to help asp pages communicate with .net pages
* This script is in /common dir of asp servers and .net servers
*/
/* Scenario:
* ---------
* A .net page contains an asp page from different domain in an iframe.
* Only the inner page knows its content's size, only the parent page may resize the iframe,
* and they are not allowed to refer to each other beyond the "window" pointer.
*
* New method (Acknowledgements to Albert Ribakovsky) - a PURE CLIENT SIDE solution:
* ----------
* Inner page loads a page (/common/AspSupport/resize.htm) from parent domain in a more inner iframe, and passes the size to it as qureystring.
* That page calls its parent. parent with a reference to the window to resize (which both documents may reach)
* and the size wanted. The parent frame resizes...
* If the parent frame domain may vary between some values (website with some domain names), the alternative names are passed
* in the querystring to the most inner frame which if fails to resize redirects itself to the next alternative.
*
* Implementation:
* ---------------
* In parent page:
* just make sure virtual directory /common is mapped, and add reference to /common/AspSupport.js.
* (CrossDomainIframe does that but sometimes requires custom syntax for the src.
* No use to maintain a custom control only for a reference to a common script and some shortcuts to config.)
* In inner page:
* Simple usage:
* Include a server script (FrameResize.asp) that includes /Common/AspSupport.js and generates a client script that sets 2 variables:
* the parent domain name and the default width.
* Optionally, it can set alternative domains, for sites with synonym host names (for example: civics.org.il).
* IMPORTANT: FrameResize.asp must be included in the element, AFTER the charset element.
* Example:
*
* Then just call AspSupport_FitFrameSize onload, and optionally onclick.
* AspSupport_FitFrameSize uses the default width set in FrameResize.asp, but a different value may be passed to it.
*
* or
*
* onclick is required only if clicks in the page may change the page size by showing and hiding elements,
* without navigating to another url.
* Custom usage:
* 1. Include a script that sets AspSupport_sParentFrameDomain to the parent domain name. For example:
AspSupport_sParentFrameDomain = "bh.cet.ac.il";
* or better a server generated script to work on both dev and prod:
AspSupport_sParentFrameDomain = "bh.<%=CetConfig_Get("Common" ,"//Common/Computer/@sDotNetDomain") %>"
* 2. In each page (or in a common script), put the script (560 is the fix width):
* The use of document.body.onclick is required only if clicks in the page may change the page size by showing and hiding elements,
* without navigating to another url.
*/
// NEW METHOD: Pure client communication
// parent frame function:
function AspSupport_ResizeFrame (oContentWindow, nWidth, nHeight)
// ~~~~~~~~~~~~~~~~~~~~~~
{
// find oContentWindow among frames and resize it
oFrames = document.getElementsByTagName("IFRAME");
for (var i = 0; i < oFrames.length; i++)
{
var oFrame = oFrames[i];
if (oFrame.contentWindow == oContentWindow)
{
oFrame.width = nWidth;
oFrame.height = nHeight;
oFrame.style.pixelWidth = nWidth;
oFrame.style.pixelHeight = nHeight;
break;
}
}
}
//-----------------------------------------------
// helper child frame function:
function AspSupport_FitFrameSize (nWidth)
// ~~~~~~~~~~~~~~~~~~~~~~~~
{
if (nWidth == undefined)
nWidth = AspSupport_nFrameWidth;
AspSupport_ResizeParentFrame(nWidth, document.body.scrollHeight);
}
//-----------------------------------------------
// child frame function:
function AspSupport_ResizeParentFrame (nWidth, nHeight)
// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
{
var s_CHILD_FRAME_ID = "AspSupport_CHILDFRAME";
var s_CHILD_FRAME_SRC = "http://" + AspSupport_sParentFrameDomain + "/common/AspSupport/Resize.htm?size=" + nWidth + "," + nHeight;
if (typeof(AspSupport_aAltDomains) != "undefined" && AspSupport_aAltDomains.length > 0)
s_CHILD_FRAME_SRC += "&alt=" + AspSupport_aAltDomains.join(",");
// load an intermediate page in parent domain
var oChildFrame = document.getElementById(s_CHILD_FRAME_ID);
if (!oChildFrame)
{
oChildFrame = document.createElement("iframe");
oChildFrame.id = s_CHILD_FRAME_ID;
oChildFrame.height = 0;
document.body.appendChild(oChildFrame);
}
oChildFrame.src = s_CHILD_FRAME_SRC;
}
//-----------------------------------------------
// OLD METHOD: using a "Ticket".
///
///This function will do the following:
///Get the ticket data for the given sTicketID.
///Load to xml object.
///If the ticket is not valid (no xml is returned from SQL) – nothing is done.
///If the ticket value is the empty string – AspSupport_CheckFrameResizeValues is called again by window.setTimeout to wait data.
///If the ticket value is not the empty string – the iframe is resized (according to the iframe id),
///then AspSupport_CheckFrameResizeValues is called again by window.setTimeout to wait next resize request.
///The expected ticket value format is width,height.
///
// xmlhttpAsynchHandle is used to hang on it many xmlhttp objects so many "CrossDomainIFrames" in a page are supported.
var xmlhttpAsynchHandle = new Object();
function AspSupport_CheckFrameResizeValues (sIframeID, TicketId)
// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
{
var widthAndHeight;
var sPointerName = "xmlhttpAsynchHandle.z" + TicketId;
while (sPointerName.indexOf("-") >= 0)
sPointerName = sPointerName.replace("-","_");
//Get the ticket data
eval(sPointerName + " = new ActiveXObject('Microsoft.XMLHTTP');");
var xmlhttpAsynch = eval(sPointerName);
xmlhttpAsynch.open("GET" ,"/Common/Tickets/GetTicketAndReset.aspx?id=" + TicketId , true);
xmlhttpAsynch.setRequestHeader("Content-Type", "charset=utf-8")
xmlhttpAsynch.onreadystatechange = new Function("AspSupport_OnGetTicketReady('" + sIframeID + "', '" + TicketId + "')");
xmlhttpAsynch.send(null);
}
//-----------------------------------------------
function AspSupport_OnGetTicketReady (sIframeID, TicketId)
// ~~~~~~~~~~~~~~~~~~~~~~~~~~~
{
var sPointerName = "xmlhttpAsynchHandle.z" + TicketId;
while (sPointerName.indexOf("-") >= 0)
sPointerName = sPointerName.replace("-","_");
var xmlhttpAsynch = eval(sPointerName);
if (xmlhttpAsynch.readyState != 4)
return;
//Check what we got
var xmlDoc = new ActiveXObject("Microsoft.XMLDOM");
var sTicketData = xmlhttpAsynch.responseText;
//If no entry was found exit
if(sTicketData == "")
{
return;
}
//Its an xml
else if(xmlDoc.loadXML(sTicketData) == true)
{
widthAndHeight = xmlDoc.selectSingleNode("//sData").text;
if(widthAndHeight == "")
{
window.setTimeout("AspSupport_CheckFrameResizeValues('" + sIframeID + "','" + TicketId + "');",1000);
}
else
{
var width = widthAndHeight.split(",")[0];
var height = widthAndHeight.split(",")[1];
document.all[sIframeID].width = width;
document.all[sIframeID].height = height;
//Continue waiting for another update of the frame size may be from another page.
window.setTimeout("AspSupport_CheckFrameResizeValues('" + sIframeID + "','" + TicketId + "');",1000);
}
}
}
//-----------------------------------------------
///
///This function will do the following:
///Update the ticket data in the db for the given sTicketID.
///Get a result to see if the update succeded.
///
function AspSupport_RegisterFrameSize(sTicketID, nWidth, nHeight)
{
var url = "/Common/Tickets/UpdateTicket.asp?id=" + sTicketID + "&data=" + nWidth + "," + nHeight;
//Get the ticket data
var xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
xmlhttp.open("GET" ,url , true);
xmlhttp.setRequestHeader("Content-Type", "charset=utf-8");
xmlhttp.send(null);
}
//-----------------------------------------------
function AspSupport_RegisterFrameSizeDotNet(sTicketID, nWidth, nHeight)
{
var url = "/Common/Tickets/UpdateTicket.aspx?id=" + sTicketID + "&data=" + nWidth + "," + nHeight;
//Get the ticket data
var xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
xmlhttp.open("GET" ,url , true);
xmlhttp.setRequestHeader("Content-Type", "charset=utf-8");
xmlhttp.send(null);
}
//-----------------------------------------------
//function AspSupport_CreateEmptyTicket()
//{
// var xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
// xmlhttp.open("GET" ,"/Common/Tickets/CreateEmptyTicket.aspx", false);
// xmlhttp.setRequestHeader("Content-Type", "charset=utf-8");
// xmlhttp.send(null);
//
// return xmlhttp.responseText;
//}
//-----------------------------------------------