/*
Reveal/Hide
FairSky Pages Component
-----------------------
Copyright 2004 Joshua Paine
Created by Joshua Paine of FairSky Networks <http://fairsky.us/>
Contact at <http://fairsky.us/contact>
Updated 2004-11-05

The latest version should be available at
<http://demo.fairsky.us/javascript/reveal_hide.html>

Latest changes are not heavily tested but should be safe.

You may copy, reuse, or produce derivative works of this code
only under the terms of the Linky License v0.1 or later.
The Linky License can be found at <http://fairsky.us/linky>.
The main points of the license are:
	1) Do not alter or remove this notice.
	2) Notify me of your usage through one of the means listed
	   at <http://fairsky.us/contact>.
*/

var gViewRadios = new Array();
var gViewDisableHiddenFields = false;

function globalViewSetup()
{
	var d;
	if(document.getElementsByName && (d = document.getElementsByName('Fsp.View.DisableHiddenFields')) && (d = d[0]) && d.content.toLowerCase()=='true') gViewDisableHiddenFields = true;
}

function clickReveal(e)
{
	var id = revealHideGetId(this);
	var n = document.getElementById(id);
	if(n)
	{
		if(n.style.display!='none')
		{
			this.hideTarget = clickHide;
			this.hideTarget();
		}
		else
		{
			revealRadio(n);
			n.style.display = '';  // changed 'block' to ''
			disableFields(n);
			viewChain(n);
			togglePropagate(n);
		}
	}
	return false;
}

function clickHide(e)
{
	var id = revealHideGetId(this);
	var n = document.getElementById(id);
	if(n)
	{
		n.style.display = 'none';
		disableFields(n);
		viewChain(n);
		togglePropagate(n);
	}
	return false;
}

function viewChain(n)
{
	var c;
	if(n.style.display == 'none' && n.viewChain)
	{
		for(var x=0; x<n.viewChain.length; x++)
		{
			c = n.viewChain[x];
			if(c.style.display != 'none')
			{
				c.style.display = 'none';
				disableFields(c);
				viewChain(c);
				togglePropagate(c);
			}
		}
	}
	else if(n.viewChain)
	{
		for(var x=0; x<n.viewChain.length; x++)
		{
			c = n.viewChain[x];
			if(c.style.display=='none') // changed form of question to test for 'none' instead of !'block'
			{
				c.style.display = ''; // changed 'block' to ''
				disableFields(c);
				revealRadio(c);
				viewChain(c);
				togglePropagate(c);
			}
		}
	}
	viewOppose(n);
}

function viewOppose(n)
{
	var c;
	if(n.style.display == 'none' && n.viewOppose)
	{
		for(var x=0; x<n.viewOppose.length; x++)
		{
			c = n.viewOppose[x];
			if(c.style.display=='none') // changed form of question to test for 'none' instead of !'block'
			{
				c.style.display = ''; // changed 'block' to ''
				disableFields(c);
				viewChain(c);
				togglePropagate(c);
			}
		}
	}
	else if(n.viewOppose)
	{
		for(var x=0; x<n.viewOppose.length; x++)
		{
			c = n.viewOppose[x];
			if(c.style.display!='none')
			{
				c.style.display = 'none';
				disableFields(c);
				revealRadio(c);
				viewChain(c);
				togglePropagate(c);
			}
		}
	}
}

/*
function revealRadio(n)
{
	var radio, x;
	if(n.visRadio)
	{
		radio = gViewRadios[n.visRadio];
		for(x=0; x<radio.length; x++)
		{
			if(n!=radio[x] && radio[x].style.display != 'none')
			{
				radio[x].style.display = 'none';
				disableFields(radio[x]); 
				viewChain(radio[x]);
				togglePropagate(radio[x]);
			}
		}
	}
}
*/

function revealRadio(n)
{
	var i, radio, x;
	if(n.visRadios)
	{
		for(i=0; i<n.visRadios.length; i++)
		{
			radio = gViewRadios[n.visRadios[i]];
			for(x=0; x<radio.length; x++)
			{
				if(n!=radio[x] && radio[x].style.display != 'none')
				{
					radio[x].style.display = 'none';
					disableFields(radio[x]); 
					viewChain(radio[x]);
					togglePropagate(radio[x]);
				}
			}
		}
	}
}

function loadReveal()
{
	var id, winId, n;
	id = revealHideGetId(this);
	winId = revealHideGetId(window.location);;
	if(n = document.getElementById(id))
	{
		if(id==winId || n.className.indexOf('Fsp.ViewDefault')!=-1)
		{
			n.style.display = ''; // changed 'block' to ''
			disableFields(n);
			viewChain(n);
			togglePropagate(n);
		}
		else
		{
			n.style.display = 'none';
			disableFields(n);
			viewChain(n);
			togglePropagate(n);
		}
	}
}

function loadViewChain()
{
	var c, id, t;
	c = this.className;
	id = /ViewChain:(\S+)\b/.exec(c);
	if(id && id[1])
	{
		id = id[1];
		t = document.getElementById(id); 
		if(t) 
		{
			if(!t.viewChain) t.viewChain = new Array();
			t.viewChain[t.viewChain.length] = this;
		}
	}
}

function loadViewOppose()
{
	var c, id, t;
	c = this.className;
	id = /ViewOppose:(\S+)\b/.exec(c);
	if(id && id[1])
	{
		id = id[1];
		t = document.getElementById(id); 
		if(t) 
		{
			if(!t.viewOppose) t.viewOppose = new Array();
			t.viewOppose[t.viewOppose.length] = this;
		}
	}
}

function loadViewRadio()
{
	var c, re, radio, r, str;
	c = this.className;
	re = /ViewRadio:(\S+)\b/g;
	while(radio = re.exec(c))
	{
		radio = radio[1];
		if(!gViewRadios[radio]) gViewRadios[radio] = new Array();
		r = gViewRadios[radio];
		r[r.length] = this;
		this.visRadio = radio;
		if(!this.visRadios) this.visRadios = new Array();
		this.visRadios[this.visRadios.length] = radio;
	}
}

function revealHideGetId(a)
{
	var pound, id;
	pound = a.href.indexOf('#');
	id = a.href.substring(pound+1);
	return id;
}

function viewToggleClick(e)
{
	var n, bs;
	if(!e || !e.currentTarget) n = window.event.srcElement;
	else n = e.currentTarget;
	if(n.name && document.getElementsByName)
	{
		bs = document.getElementsByName(n.name);
		for(x = 0; x<bs.length; x++)
		{
			bs[x].viewToggle();
		}
	}
	else
	{
		n.viewToggle = viewToggle;
		n.viewToggle();
	}
}

function viewToggleLoad()
{
	var id, n;
	id = /ViewToggle:(\S+)\b/.exec(this.className);
	if(id && id[1] && (n = document.getElementById(id[1])))
	{
		this.viewToggleId = id[1];
		this.viewToggleNode = n;
		this.viewToggleReverse = (this.className.indexOf('ViewToggle.Reverse') > -1);
		if(!n.viewToggles) n.viewToggles = new Array();
		n.viewToggles[n.viewToggles.length] = this;
		this.viewToggle = viewToggle;
		this.viewToggle();
	}
}

function viewToggle()
{
	if(this.viewToggleId)
	{
		var reverse = this.viewToggleReverse;
		var n = this.viewToggleNode;
		if(n)
		{
			if((this.checked || reverse) && !(this.checked && reverse))
			{
				revealRadio(n);
				n.style.display = ''; // changed 'block' to ''
				disableFields(n);
				viewChain(n);
			}
			else
			{
				n.style.display = 'none';
				disableFields(n);
				viewChain(n);
			}
		}
	}
}

function togglePropagate(n)
{
	var t, vis, e;
	if(t = n.viewToggles)
	{
		vis = (n.style.display!='none'); // changed to test for !'none' instead of 'block'
		for(var x=0; x<t.length; x++)
		{
			if((vis || t[x].viewToggleReverse) && !(vis && t[x].viewToggleReverse))
				t[x].checked = true;
			else
				t[x].checked = false;
			e = new Object;
			e.currentTarget = t[x];
			viewToggleClick(e);
		}
	}
}

function disableFields(n)
{
	var t, f, x, y, disabled;
	if(gViewDisableHiddenFields)
	{
		if(n.style.display != 'none') disabled = false; // changed test to !'none' from 'block'
		else disabled = true;
		t = new Array('input','select','textarea');
		for(x = 0; x< t.length; x++)
		{
			f = n.getElementsByTagName(t[x]);
			for(y=0; y<f.length; y++)
			{
				f[y].disabled = disabled;
			}
		}
	}
}

document.register('body',null,globalViewSetup,'load',false);
document.register('*','ViewChain',loadViewChain,'load',false);
document.register('*','ViewOppose',loadViewOppose,'load',false);
document.register('*','ViewRadio',loadViewRadio,'load',false);
document.register('a','Reveal',clickReveal,'click',true);
document.register('a','Reveal',loadReveal,'load',false);
document.register('a','Hide',clickHide,'click',true);
document.register('input','ViewToggle',viewToggleClick,'click',false);
document.register('input','ViewToggle',viewToggleLoad,'load',false);