function ActionQueue(
	sControllerUrl
	) {	
	
	this.sControllerUrl	= sControllerUrl;
	this.aActions = [];
	this.iLastProcessingCommandId = 0;

}

ActionQueue.prototype = {	
	
	addAction : function(oAction) {
	
		this.aActions[this.aActions.length] = oAction;
		
		oAction.setId(this.aActions.length - 1);
		oAction.setState(Action.STATE_IN_QUEUE);				
	
	},
	
	getActionById : function(iId) {
	
		if(this.aActions[iId]) {		
			return this.aActions[iId];		
		}
	
	},
	
	process : function() {		
	
		var sXml = '';
		
		for(var i = this.iLastProcessingCommandId; i < this.aActions.length; i++) {
			
			if(this.aActions[i].getState() == Action.STATE_IN_QUEUE) {
			
				sXml += this.aActions[i].getXml();
			
				this.aActions[i].setState(Action.STATE_PROCESSING);
				
				this.iLastProcessingCommandId = i;
				
			}							
		
		}
		
		if(sXml == '') {
			return;
		}
		
		var sRequest = '<request>' + sXml + '</request>';
		
		var oAjaxHelper = new Ajax.Loader(
			this,
			this.sControllerUrl,
			'POST',
			{
				ajax : sRequest
			},
			{
				bIgnoreCache : true
			}
		);
		
		oAjaxHelper.send();
	
	},
	
	ajaxUpdate : function(oResponse) {
	
		var
			aResponseActions = oResponse.responseXML.getElementsByTagName('action'),
			oAction
			;
		
		for(var i = 0; i < aResponseActions.length; i++) {
			
			oAction = this.getActionById(aResponseActions[i].getAttribute('id'));
			
			if(oAction) {
			
				oAction.setState(parseInt(aResponseActions[i].getAttribute('status')));
				oAction.processResult(aResponseActions[i]);								
				
			}
			
		}
	
	}

};