//    Licensed Materials - Property of IBM
//
//    IBM Cognos Products: ps
//
//    (C) Copyright IBM Corp. 2005, 2011
//
//    US Government Users Restricted Rights - Use, duplication or disclosure restricted by GSA ADP Schedule Contract with IBM Corp.
// Copyright (C) 2008 Cognos ULC, an IBM Company. All rights reserved.
// Cognos (R) is a trademark of Cognos ULC, (formerly Cognos Incorporated).

function select(p, v) {
	for (var i=0;i<document.pform.elements.length;i++)
	{
		var e = document.pform.elements[i];
		if (e.name.substring(0, p.length)==p)
		{
			e.checked = v;
		}
	}
	event_onclick();
}

function event_onclick(chkPrefix, hidPrefix)
{
	var newpv = "";
	var newmv = "";
	
	// scan all checkboxes using a well known prefix
	for (i=0; i<document.pform.elements.length; i++)
	{
		var e = document.pform.elements[i];
		if (e.name.substring(0, chkPrefix.length) == chkPrefix)
		{
			if (e.checked)
			{
				// get its hidden input equivalent
				p = document.pform.elements[hidPrefix + e.name.substring(chkPrefix.length)];
				pv = p.value;
				if (newpv == "")
				{
					// first state
					newpv = pv;
				}
				else if (newpv != pv)
				{
					// mixed state
					for (j = 0; j < newpv.length; j++)
					{
						permission = newpv.substr(j, 1);
						if ((-1 == pv.indexOf(permission)) && (-1 == newmv.indexOf(permission)))
							newmv += permission;
					}

					for (j=0; j<pv.length; j++)
					{
						permission = pv.substr(j, 1);
						if ((-1 == newpv.indexOf(permission)) && (-1 == newmv.indexOf(permission)))
							newmv += permission;
					}
				}
			}
		}
	}

	// for each 'permission' in 'mixed' if 'pattern' has it, remove it from 'pattern'
	for (i = 0; i < newmv.length; i++)
	{
		permission = newmv.substr(i, 1);
		newpv = newpv.replace(new RegExp(permission,""), "");
	}

	// set the values
	document.pform.elements['privileges_pattern'].value = newpv;
	document.pform.elements['privileges_mixed'].value = newmv;

	// update all checkboxes images
	all = "rRwWxXpPtT";
	for (i=0; i<all.length; i++)
	{
		permission = all.substr(i, 1);
		if (newmv.indexOf(permission) != -1)
			state = 2;
		else
			state = (newpv.indexOf(permission) != -1) ? 1 : 0;
		setImage(permission, state);
	}
}

function checkboxKeyHandler(rwxp)
{
	var Key;
	Key = window.event.keyCode;
	if (Key==32) //space bar
	{
		document.pform.uncommitted_permissions.value='1';
		check(rwxp);
	}
}

function check(permission)
{
	otherPermission = (permission == permission.toLowerCase()) ? permission.toUpperCase() : permission.toLowerCase();

	p = document.pform.elements['privileges_pattern'];
	m = document.pform.elements['privileges_mixed'];
	pv = p.value; // get values for pattern and mixed
	mv = m.value;

	ppos = pv.indexOf(permission);
	if (-1 == ppos) // is it unchecked or third state?
	{
		// add 'permission' to 'pv', remove 'otherPermission' from 'pv' and
		// remove both ('permission' and 'otherPermission') from 'mv'
		pv += permission;
		re = RegExp(otherPermission,"");
		pv = pv.replace(re, "");
		mv = mv.replace(re, "");
		mv = mv.replace(new RegExp(permission,""), "");

		state = 1; // checked
	}
	else
	{
		// just remove 'permission' from 'pv'
		pv = pv.replace(new RegExp(permission,""), "");

		state = 0; // unchecked
	}
	setImage(permission, state);  // new checkbox state
	setImage(otherPermission, 0); // reset other to unchecked

	p.value = pv; // reassign values
	m.value = mv;

	if (window.on_uncommitted_permissions_changed)
	{
	   on_uncommitted_permissions_changed();
	}

	return;
}

function setImage(permission, state)
{
	obj = document.images[permission];
	if (obj)
	{
		img = obj.src;
		ipos = img.lastIndexOf('checkbox_');
		path = img.substr(0, ipos);
		switch (state)
		{
			case 1:
				gif = "checked";
				obj.alt=checkbox_checked_message;
				break;
			case 2:
				gif = "mixed";
				obj.alt=checkbox_mixed_message;
				break;
			default:
				gif = "unchecked";
				obj.alt=checkbox_unchecked_message;
				break;
		}
		obj.src = path + 'checkbox_' + gif + '.gif';
	}
}