Other Languages

Most of our example code is in Python, but Automation Option's XML/HTTP interface is easily accessed from other languages, such as JavaScript.

Consider this powerful nesting script, in Python:

Nesting from a Hot Folder

This is a rich example, using various parts of the XML interface to examine the status of a Print Queue, and ultimately to submit a layout for printing.

All the same functionality is demonstrated by this '.html' file, using JavaScript.

HTML/JavaScript Source Code

<!DOCTYPE html>

<html>
    <head>
        <title>Nesting with Wasatch Automation</title>
        <meta charset="UTF-8">
    </head>
    <body>
		<style>
		body {
			margin: 30px;
		}
		div {
			margin-left: 15px;
			display: inline-block;
		}
		button {
			margin-left: 15px;
			margin-bottom: 5px;
			width: 125px;
		}
		</style>
		
        <h2>Nesting of print queue entries with Wasatch Automation:</h2>
		
	<script>
	
		/* 	This script will run Wasatch nesting on the contents of the print queue, and return the height of the resulting layout.
		*
		*	If the height of the layout exceeds 'printWhenThisHeightIsExceeded', it will submit the layout for printing.
		*
		*	Because this version operates on the print queue only, printing starts immediately and rotation is not allowed to the nesting algorithm.
		*/
	
		var debugScript = false; // if true, displays useful debugging info.

printLayout = function(xmlLayout, printUnit) 
		{
			url = "http://" + wasatchSoftRIP + '/xmlSubmission.dyn?';
			url += escape(new XMLSerializer().serializeToString(xmlLayout));  // escape all special characters in data
			
			try {
				xmlDoc = getXMLDocSynchronous(url);
				document.getElementById("status" + printUnit).innerHTML = "Layout submitted";
			}
			catch(err){
				document.getElementById("status" + printUnit).innerHTML = "Layout failed";
			}
		}

layoutAlreadyInQueue = function(printUnit) // checks whether there is already a layout in the queue which will halt new layout submissions 
		{
			url = "http://" + wasatchSoftRIP + '/xmlQueueStatus.dyn?PRINTUNIT=' + printUnit;
			xmlStatus = getXMLDocSynchronous(url);
			
			// Check to make sure the print unit is configured (only returns false if there are items in the print queue)
			if (xmlStatus.getElementsByTagName('PRINTUNIT')[0].getAttribute('name').search('Not configured') >= 0) {
				document.getElementById("status" + printUnit).innerHTML = "Unit " + printUnit + " is not configured.";
				return true; 
			}
			// Confirm there are no layouts in the print queue 			
			prtQueueItems = xmlStatus.getElementsByTagName('ITEM');	
			for(i = 0; i < prtQueueItems.length; i++) {
				if (prtQueueItems[i].getAttribute('layout') == 'true'){
					return true;
				}
			} 
			return false;	
		}

editLayout = function(xml)  // edit the layout to delete print queue entries after printing
		{
			node = document.createElementNS("","DELETEAFTERPRINT");
			xml.getElementsByTagName('LAYOUT')[0].appendChild(node); 			
			return xml;
		}
		
		monitorQueue = function(printUnit) // runs on a timer to monitor queues
		{		
			layout = getLayout(printUnit); 
			document.getElementById("height" + printUnit).innerHTML = ("(Layout height: " + layout.height + "\")");
			
			if (layout.height > printWhenThisHeightIsExceeded[printUnit - 1]){
				if (!layoutAlreadyInQueue(printUnit)){
					layout.xml = editLayout(layout.xml);
					printLayout(layout.xml, printUnit);
				} else {
					document.getElementById("status" + printUnit).innerHTML = "Layout already in process in Print Queue";
					document.getElementById("height" + printUnit).innerHTML = "";
				}
			}		
		}
	
		startTimer = function(u)
		{
			monitorQueue(u);
			if (timer[u] != false) {
				clearInterval(timer[u])
			}
			timer[u] = setInterval(monitorQueue, frequency[u - 1] * 1000, u);
					
		}
		
		stopTimer = function(u)
		{
			clearInterval(timer[u]);
			document.getElementById("status" + u).innerHTML = "Stopped";
			document.getElementById("height" + u).innerHTML = "";
		}

getXMLDocSynchronous = function(url) // Gets the xml data from SoftRIP
		{
			var xmlHttp;

if (window.XMLHttpRequest) xmlHttp=new XMLHttpRequest()
			else xmlHttp = null;

if (xmlHttp!=null)  {	
				xmlHttp.open("GET", url, false); //  synchronous - wait on this call		
				xmlHttp.send();
				if(debugScript === true && xmlHttp.responseXML)
					debuggingDisplay(xmlHttp);  
			}
			else
			{
				alert("XMLHttpRequest not supported by this browser");
			}
			if(xmlHttp.responseXML){
				return xmlHttp.responseXML;
			} 
		}

debuggingDisplay = function(xmlHttp) // Prints debug information if debugScript is set to true
		{		
			var	message= "Debugging Display\n\n"
			message += "--------- HTTP RESPONSE HEADERS --------\n\n"
			message += xmlHttp.getAllResponseHeaders()
			message += "\n\n----------------------------------- XML -----------------------------------\n\n"
			message += new XMLSerializer().serializeToString(xmlHttp.responseXML)
			alert(message);
		}
	</script>
        
    </body>
</html>