File: js/Locking.js

// locking.js
function AJAX_Locking_Handler()
{
    this.timer_id = 0;
    switch(arguments.length) {
        case 0: // no argument
            break;
        case 1: // only callbacks
            this.ajax = new AjaxLocking(arguments[0]);
            break;
        case 4: // complete signature
            this.ajax = new AjaxLocking(arguments[0]);
        	this.user = arguments[1];
        	this.type = arguments[2];
        	this.id = arguments[3];
        	break;
        default:
            alert("AJAX_Locking_Handler constructor error: bad arguments list");
            return null;
    }
}

AJAX_Locking_Handler.prototype =
{
    delay: 2000,

    setCallbacks:function(callbacks)
    {
        this.ajax = new AjaxLocking(lockingCallbacks);
    },

    setParams:function(user, type, id)
    {
    	this.user = user;
    	this.type = type;
    	this.id = id;
    },

	lock:function()
	{
	    if (this.ajax && this.user && this.type && this.id)
		  this.ajax.lock(this.user, this.type, this.id);
	},

	unlock:function()
	{
	    if (this.ajax && this.user && this.type && this.id)
    		this.ajax.unlock(this.user, this.type, this.id);
	},

	status:function()
	{
	    if (this.ajax && this.user && this.type && this.id)
    		this.ajax.status(this.user, this.type, this.id);
	},

	spawnTimer:function()
	{
		var myself = this;
		this.stop();
		this.timer_id = window.setInterval( function() { myself.status(); }, myself.delay);
	},


	start:function()
	{
		this.status();
		this.spawnTimer();
	},

	stop:function()
	{
		if (this.timer_id) {
			clearInterval(this.timer_id);
			this.timer_id = 0;
		}
	}

}