Adding Ajax queue system.

Example usage:

AjaxQueue.setBatchSize(1);
AjaxQueue.push("http://www.testingqueue.com/process/",{onSucess: funcSuccess, onfailure: funcFailure});
AjaxQueue.push("http://www.testingqueue.com/process1/",{onSucess: funcSuccess1, onfailure: funcFailure1}, "myDiv");
AjaxQueue.push("http://www.testingqueue.com/process2/",{onSucess: funcSuccess2, onfailure: funcFailure2});
AjaxQueue.push("http://www.testingqueue.com/process3/",{onSucess: funcSuccess3, onfailure: funcFailure3});
AjaxQueue.push("http://www.testingqueue.com/process4/",{onSucess: funcSuccess4, onfailure: funcFailure4});
AjaxQueue.push("http://www.testingqueue.com/process5/",{onSucess: funcSuccess5, onfailure: funcFailure5});

1 files changed, 40 insertions, 0 deletions

diff --git a/usr/local/www/javascript/global.js b/usr/local/www/javascript/global.js
new file mode 100644
index 0000000..418f7ef
--- /dev/null
+++ b/usr/local/www/javascript/global.js
@@ -0,0 +1,40 @@
+var AjaxQueue = {
+	batchSize: 1, //No.of simultaneous AJAX requests allowed, Default : 1
+	urlQueue: [], //Request URLs will be pushed into this array
+	elementsQueue: [], //Element IDs of elements to be updated on completion of a request ( as in Ajax.Updater )
+	optionsQueue: [], //Request options will be pushed into this array
+	setBatchSize: function(bSize){ //Method to set a different batch size. Recommended: Set batchSize before making requests
+		this.batchSize = bSize;
+	},
+	push: function(url, options, elementID){ //Push the request in the queue. elementID is optional and required only for Ajax.Updater calls
+		this.urlQueue.push(url);
+		this.optionsQueue.push(options);
+		if(elementID!=null){
+			this.elementsQueue.push(elementID);
+		} else {
+			this.elementsQueue.push("NOTSPECIFIED");
+		}
+
+		this._processNext();
+	},
+	_processNext: function() { // Method for processing the requests in the queue. Private method. Don't call it explicitly
+		if(Ajax.activeRequestCount < AjaxQueue.batchSize) // Check if the currently processing request count is less than batch size
+		{	
+			if(AjaxQueue.elementsQueue.first()=="NOTSPECIFIED") { //Check if an elementID was specified
+				// Call Ajax.Request if no ElementID specified
+				//Call Ajax.Request on the first item in the queue and remove it from the queue
+				new Ajax.Request(AjaxQueue.urlQueue.shift(), AjaxQueue.optionsQueue.shift()); 
+				
+				var junk = AjaxQueue.elementsQueue.shift();
+			} else {
+				// Call Ajax.Updater if an ElementID was specified.
+				//Call Ajax.Updater on the first item in the queue and remove it from the queue
+				new Ajax.Updater(AjaxQueue.elementsQueue.shift(), AjaxQueue.urlQueue.shift(), AjaxQueue.optionsQueue.shift());				
+			}		
+		}
+	}
+};
+Ajax.Responders.register({
+  //Call AjaxQueue._processNext on completion ( success / failure) of any AJAX call.
+  onComplete: AjaxQueue._processNext
+});