var defaultproperties = eval({"Component Type":null,"Waveguide Size":null,"Dash 1":null,"Port 1 Flange":null,"Port 2 Flange":null,"Port 3 Flange":null,"Port 4 Flange":null,"Alloy":null,"Length 1":null,"Dash 2":null,"Length 2":null,"Dash 3":null,"Angle":null,"Jacket":null,"Dash 4":null,"Number Value 1":null,"Dash 5":null,"Number Value 2":null,"Dash 6":null,"Plating":null,"Paint":null});
var defaultnotes = eval({"Alloy_Notes":"","Angle_Notes":"","Component_Notes":"","Jacket_Notes":"","Length_Notes":"","Number_Notes":"","Paint_Notes":"","Plating_Notes":"","Flange_Notes":"","Waveguide_Notes":""});
var datatypes = eval({"Alloy":"alloy","Angle":"angle","Component Type":"component","Jacket":"jacket","Length 1":"length","Length 2":"length","Number Value 1":"number","Number Value 2":"number","Paint":"paint","Plating":"plating","Port 1 Flange":"flange","Port 2 Flange":"flange","Port 3 Flange":"flange","Port 4 Flange":"flange","Waveguide Size":"waveguide"});

function Model(partnumber)
{
	if(!partnumber)
		this.reset();
	else
		this.loadSaved(partnumber);
}

Model.prototype.reset = function()
{
	this.properties = new Clone(defaultproperties);
	this.requirements = new Clone(defaultproperties);
	for(property in this.requirements)
		this.requirements[property] = 'NA';
	this.requirements['Component Type'] = 'R';
	this.propertydescriptions = new Object();
	this.propertynotes = new Clone(defaultnotes);
	this.quantity = 1;
}

Model.prototype.getPartNumber = function()
{
	partnumber = '';
	
	//loop through requirements
	for(field in this.requirements)
	{
		switch(this.requirements[field])
		{
			case 'R':	if(!this.properties[field])	//is the value null
							partnumber += '_';
						else
							partnumber += this.properties[field];
						break;
			case 'O':	if(this.properties[field] == '-')	//is this optional a dash
						{
							if(this.assessDash(field))
								partnumber += this.properties[field];
						} else if(this.properties[field]) {	//is the optional value set
							partnumber += this.properties[field];
						}
			case 'NA':
						break;
		}
	}
	
	return partnumber;
}

Model.prototype.assessDash = function(dashname)
{
	switch (dashname)
	{
		case 'Dash 2':	if(this.properties['Length 1'] && this.properties['Length 2'])
							return true;
						break;
		case 'Dash 3':	if(this.properties['Angle'])
							return true;
						break;
		case 'Dash 6':	if(this.properties['Plating'] || this.properties['Paint'])
							return true;
						break;
	}
	return false;
}

Model.prototype.setRequirements = function(requirements)
{
	this.requirements = requirements;
	//set the component type value
	this.setProperty('Component Type',this.requirements['Component Type']);
	//enable/disable required/optional/NA fields and tabs
	for(field in this.requirements)
	{
			switch(this.requirements[field])
			{
				case 'R':	if(field.indexOf('Dash') !== -1)
								this.setProperty(field,'-');
							else
								enableField(field);
							break;
				case 'O':	if(field.indexOf('Dash') !== -1)
								this.setProperty(field,'-');
							else
								enableField(field);
							break;
				case 'NA':	if(field.indexOf('Dash') !== -1)
							{
								this.setProperty(field,null);
								disableField(field);
							}
							break;	//set property value to null and disable
				default:	this.requirements[field] = 'R';
							break;  //case for Component Type: associate as a required field	
			}
	}
}

Model.prototype.isRequiredField = function(property)
{
	//check field requirements based on field value
	if(this.requirements[property] == 'R')
						return true;
	return false;
}

Model.prototype.setPlatingPaintRequirements = function()
{
	//Plating and Paint are not mutually exclusive
	//as a pair the fields are optional or required
	this.requirements['Plating'] = 'R';
	this.requirements['Paint'] = 'R';
}

Model.prototype.removePlatingPaintRequirements = function()
{
	//Plating and Paint are not mutually exclusive
	//as a pair the fields are optional or required
	this.requirements['Plating'] = 'O';
	this.requirements['Paint'] = 'O';
}

Model.prototype.isOptionalField = function(property)
{
	//check field requirements based on field value
	if(this.requirements[property] == 'O')
						return true;
	return false;
}

Model.prototype.setProperty = function(property,value)
{
	this.properties[property] = value;
}

Model.prototype.getProperty = function(property)
{
	return this.properties[property];
}

Model.prototype.setNote = function(property,value)
{
	this.propertynotes[property] = value.trim();
}
	
Model.prototype.getNote = function(property)
{
	return this.propertynotes[property];
}

Model.prototype.clearNote = function(property)
{
	this.propertynotes[property] = '';
}

Model.prototype.getQuantity = function()
{
	if(this.quantity)
		return this.quantity;
	return 1;
}

Model.prototype.setQuantity = function(qty)
{
	this.quantity = qty;
}

//Object to wrap display of model properties
function ModelDescriptions(container)
{
	this.container = container;
}

ModelDescriptions.prototype.display = function(model)
{
	//clear display container
	if(this.container.childNodes.length > 0)
		removeAllElementNodes(this.container);

	//loop through the model property descriptions and display
	for(property in model.propertydescriptions)
	{
		//if it is empty continue
		if(!model.propertydescriptions[property])
			continue;
		h3 = document.createElement('h3');
		h3.appendChild(document.createTextNode(property + ':'));
		p = document.createElement('p');
		p.appendChild(document.createTextNode(model.propertydescriptions[property]));
		this.container.appendChild(h3);
		this.container.appendChild(p);
	}
}

ModelDescriptions.prototype.clear = function()
{
	//clear display container
	if(this.container.childNodes.length > 0)
		removeAllElementNodes(this.container);
}

//should couple with ModelDescriptions object
function displayPartNumber(partnumber)
{
	partnumbertext.nodeValue = partnumber;
}

/*
	Dynamic Actions on Model objects
*/
function initModelRequirements(componentcode,model,text)
{
	if(componentcode == '-')
	{
		alert('Component Type is a Required Field');
		document.getElementById('Component Type').focus();
		resetBuildForm(model,false);
		return false;
	}

	xmlHttp=GetXmlHttpObject()
	if(xmlHttp==null)
	{
		alert ("Your browser does not support AJAX!");
		return;
	}

	xmlHttp.onreadystatechange = function()
	{
			if(xmlHttp.readyState == 4)
			{
				requirements = eval('('+xmlHttp.responseText+')');
				if(requirements !== null)
				{
					//reset object and fields
					resetBuildForm(model,false);
					
					//flag required values
					model.setRequirements(requirements);
					model.propertydescriptions['Component Type'] = text;
					setTabRequirements(model);
					displayPartNumber(model.getPartNumber());
					swapPropertyImage('Component Type',componentcode,'component');
					currentproperties.display(model);
					promptField(model);
					
					quotelist.display();
				}
			}
	}
	
	xmlHttp.open("GET",'includes/requirements.php?code='+componentcode,true);
	xmlHttp.send(null);
}

function removeModel(partnumber,partindex)
{	
	if(!confirm('Are You Sure you want to remove Model#'+partnumber+' from your quote?'))
		return;
	xmlHttp=GetXmlHttpObject();
	if(xmlHttp==null)
	{
		alert ("Your browser does not support AJAX!");
		return;
	}

	xmlHttp.onreadystatechange = function()
	{
			if(xmlHttp.readyState == 4)
			{
				result = eval('('+xmlHttp.responseText+')');
				if(!result)
				{
					alert('could not remove ' + partnumber);
					return false;
				}
				buildlist = new ListIterator();
				quotelist = new QuoteList(buildlist,document.getElementById('quotelist'));
				loadBuildList(true);
				document.getElementById('Save').firstChild.data = 'Add to Quote';
				document.getElementById('Save').style.backgroundImage = 'url(images/buildimages/btn_add_to_quote.gif)';
				return true;				
			}
	}

	xmlHttp.open("GET",'includes/remove.php?partnumber=index_'+partindex,true);
	xmlHttp.send(null);
}

function editModel(partindex)
{
	buildlist.setCurrent(partindex);
	loadModelFields(buildlist.getCurrent());
	displayPartNumber(buildlist.getCurrent().getPartNumber());
	currentproperties.display(buildlist.getCurrent());
	setTabRequirements(buildlist.getCurrent());
	document.getElementById('Save').firstChild.data = 'Save Changes';
	document.getElementById('Save').style.backgroundImage = 'url(images/buildimages/btn_save_changes.gif)';
}

function newModel()
{
	if(buildlist.current.completedSave && ( buildlist.current.revertData != buildlist.getCurrent().getPartNumber() || buildlist.current.altered ))
	{
		//current model is not in its saved state
		if(confirm('Would you like to save the current Model#' + buildlist.getCurrent().getPartNumber() + ' into your quote list?'))
		{
			saveModel(true);
			return true;
		} 
	}
	if(buildlist.current.completedSave)
	{
		//set index to end for insert
		buildlist.setCurrent(buildlist.length - 1);
		if(buildlist.current.completedSave)
			buildlist.insert(new Model());
	} else {
		if(confirm('Would you like to add this new Model number into your quote list?'))
		{
			saveModel(true);
			return true;
		} 
	}
	resetBuildForm(buildlist.getCurrent(),true);
	document.getElementById('Save').firstChild.data = 'Add to Quote';
	document.getElementById('Save').style.backgroundImage = 'url(images/buildimages/btn_add_to_quote.gif)';
	return true;
}

function resetModel()
{
	if(!buildlist.current.completedSave)
	{
		resetBuildForm(buildlist.getCurrent(),true);
	}
	else
	{
		c_index = buildlist.index();
		buildlist = new ListIterator();
		quotelist = new QuoteList(buildlist,document.getElementById('quotelist'));
		loadBuildList(false,c_index);
	}

}

function overwriteModel(createanother,set_index)
{
	var xmlHttp=GetXmlHttpObject();
	if(xmlHttp==null)
	{
		alert ("Your browser does not support AJAX!");
		return;
	}

	xmlHttp.onreadystatechange = function()
	{
			if(xmlHttp.readyState == 4)
			{
				var result = eval('('+xmlHttp.responseText+')');
				if(!result)
				{
					alert('There was a problem saving your component information.  We are sorry for the inconvenience.');
					return false;
				}

				buildlist = new ListIterator();
				quotelist = new QuoteList(buildlist,document.getElementById('quotelist'));
				loadBuildList(createanother,set_index);

				if(createanother)
				{
					document.getElementById('Save').firstChild.data = 'Add to Quote';
					document.getElementById('Save').style.backgroundImage = 'url(images/buildimages/btn_add_to_quote.gif)';
				}
				return true;
			}
	}
	
	xmlHttp.open("GET",'includes/overwrite.php?model='+encodeURI(json_encode(buildlist.getCurrent()))+'&partnumber=index_'+buildlist.index(),true);
	xmlHttp.send(null);	
}

function setModelQuantity(set_index)
{
	var xmlHttp=GetXmlHttpObject();
	if(xmlHttp==null)
	{
		alert ("Your browser does not support AJAX!");
		return;
	}

	xmlHttp.onreadystatechange = function()
	{
			if(xmlHttp.readyState == 4)
			{
				var result = eval('('+xmlHttp.responseText+')');
				if(!result)
				{
					alert('There was a problem saving your component information.  We are sorry for the inconvenience.');
					return false;
				}
				return true;
			}
	}
	
	xmlHttp.open("GET",'includes/overwrite.php?model='+encodeURI(json_encode(buildlist.getCurrent()))+'&partnumber=index_'+buildlist.index(),true);
	xmlHttp.send(null);		
}

function saveModel(createanother)
{	
	if(!validateModel(buildlist.getCurrent()))
		return false;

	//check if we want to overwrite the current model if it has been saved
	if(buildlist.current.completedSave)
	{
		if(buildlist.getCurrent().getPartNumber() == buildlist.current.revertData && !buildlist.current.altered)
		{
			alert(buildlist.getCurrent().getPartNumber() + ' has already been saved');
			return false;
		}
		
		if(confirm('Are your sure you want to Save Changes to '+ buildlist.current.revertData + '?'))
		{
			//overwright the partnumber from the session
			overwriteModel(createanother,buildlist.index());
			return true;
		} else {
			//reload buildlist from session
			c_index = buildlist.index();
			buildlist = new ListIterator();
			quotelist = new QuoteList(buildlist,document.getElementById('quotelist'));
			if(!createanother)
				loadBuildList(false,c_index);
			else
				loadBuildList(true);
			
			return false;
		}
	}

	var xmlHttp=GetXmlHttpObject();
	if(xmlHttp==null)
	{
		alert ("Your browser does not support AJAX!");
		return;
	}

	xmlHttp.onreadystatechange = function()
	{
			if(xmlHttp.readyState == 4)
			{
				var result = eval('('+xmlHttp.responseText+')');
				if(!result)
				{
					alert('There was a problem saving your component information.  We are sorry for the inconvenience.');
					return false;
				}

				if(!createanother)
					createanother = true;
				//	createanother = confirm('Component Sucessfully added to your quote.  Would You like to create another component?');
				if(!createanother)
				{
					//Should be placed in an object and accessed through view interface
					document.getElementById('Save').firstChild.data = 'Save Changes';
					document.getElementById('Save').style.backgroundImage = 'url(images/buildimages/btn_save_changes.gif)';
				} else {
					document.getElementById('Save').firstChild.data = 'Add to Quote';
					document.getElementById('Save').style.backgroundImage = 'url(images/buildimages/btn_add_to_quote.gif)';
				}

				buildlist = new ListIterator();
				quotelist = new QuoteList(buildlist,document.getElementById('quotelist'));
				loadBuildList(createanother);

				return true;
			}
	}

	xmlHttp.open("GET",'includes/save.php?model='+encodeURI(json_encode(buildlist.getCurrent()))+'&partnumber=index_'+buildlist.index(),true);
	xmlHttp.send(null);
}

function validateModel(model)
{
		//make sure all required fields are set
		for(field in model.requirements)
		{
				if(model.isRequiredField(field))
					if(!model.properties[field])
					{
						alert(field + ' is a Required Field');
						tabgroup.showTab(document.getElementById(field).tab);
						document.getElementById(field).focus();
						return false;	
					}
		}
		return true;
}