/**

* Hide and show all checkboxes

* status = true (show boxes), false (hide boxes)

*/

function display_checkboxes(status) 

{

	var form = document.getElementById('set-permissions');

	var cb = document.getElementsByTagName('input');

	var display;

	//show

	if (status)

	{

		display = 'inline';

	}

	//hide

	else

	{

		display = 'none';

	}

	for (var i = 0; i < cb.length; i++ )

	{

		if (cb[i].className == 'permissions-checkbox')

		{

			cb[i].style.display = display;

		}

	}	

}

/**

* Change opacity of element

* e = element

* value = 0 (hidden) till 10 (fully visible)

*/

function set_opacity(e, value) {

	e.style.opacity = value/10;

	//IE opacity currently turned off, because of its astronomical stupidity

	//e.style.filter = 'alpha(opacity=' + value*10 + ')';

}

/**

* Reset the opacity and checkboxes

* block_id = id of the element that needs to be toggled

*/

function toggle_opacity(block_id) {

	var cb = document.getElementById('checkbox' + block_id);

	var fs = document.getElementById('perm' + block_id);

	if (cb.checked) 

	{

		set_opacity(fs, 5);

	} 

	else 

	{

		set_opacity(fs, 10);

	}

}

/**

* Reset the opacity and checkboxes

* value = 0 (checked) and 1 (unchecked)

* except_id = id of the element not to hide

*/

function reset_opacity(status, except_id) {

	var perm = document.getElementById('set-permissions');

	var fs = perm.getElementsByTagName('fieldset');

	var opacity = 5;

	if (status)

	{

		opacity = 10;	

	}

	for (var i = 0; i < fs.length; i++ )

	{

		if (fs[i].className != 'quick')

		{

			set_opacity(fs[i], opacity);

		}

	}

	if (typeof(except_id) != 'undefined')

	{

		set_opacity(document.getElementById('perm' + except_id), 10);

	}

	//reset checkboxes too

	marklist('set-permissions', 'inherit', !status);

}

/**

* Check whether we have a full radiobutton row of true

* index = offset for the row of inputs (0 == first row, 1 == second, 2 == third),

* rb = array of radiobuttons

*/

function get_radio_status(index, rb) 

{

	for (var i = index; i < rb.length; i = i + 3 )

	{

		if (rb[i].checked != true)

		{

			if (i > index)

			{

				//at least one is true, but not all (custom)

				return 2;

			}

			//first one is not true

			return 0;

		}

	}

	// all radiobuttons true

	return 1;

}

/**

* Set tab colours

* id = panel the tab needs to be set for, 

* init = initialising on open, 

* quick = If no calculation needed, this contains the colour

*/

function set_colours(id, init, quick)

{

	var table = document.getElementById('table' + id);

	var tab = document.getElementById('tab' + id);

	if (typeof(quick) != 'undefined') 

	{

		tab.className = 'permissions-preset-' + quick + ' activetab';

		return;

	}

	var rb = table.getElementsByTagName('input');

	var colour = 'custom';

	var status = get_radio_status(0, rb);

	if (status == 1)

	{

		colour = 'yes';

	}

	else if (status == 0) 

	{

		// We move on to No

		status = get_radio_status(1, rb);

		if (status == 1)

		{

			colour = 'no';

		}

		else if (status == 0) 

		{

			// We move on to Never

			status = get_radio_status(2, rb);

			if (status == 1)

			{

				colour = 'never';

			}

		}

	}

	if (init)

	{

		tab.className = 'permissions-preset-' + colour;

	}

	else

	{

		tab.className = 'permissions-preset-' + colour + ' activetab';

	}

}

/**

* Initialise advanced tab colours on first load

* block_id = block that is opened

*/

function init_colours(block_id)

{	

	var block = document.getElementById('advanced' + block_id);

	var panels = block.getElementsByTagName('div');

	var tab = document.getElementById('tab' + id);

	for (var i = 0; i < panels.length; i++)

	{

		if(panels[i].className == 'permissions-panel')

		{

			set_colours(panels[i].id.replace(/options/, ''), true);

		}

	}

	tab.className = tab.className + ' activetab';

}

/**

* Show/hide option panels

* value = suffix for ID to show

* adv = we are opening advanced permissions

* view = called from view permissions

*/

function swap_options(pmask, fmask, cat, adv, view)

{

	id = pmask + fmask + cat;

	active_option = active_pmask + active_fmask + active_cat;

	var	old_tab = document.getElementById('tab' + active_option);	

	var new_tab = document.getElementById('tab' + id);

	var adv_block = document.getElementById('advanced' + pmask + fmask);

	if (adv_block.style.display == 'block' && adv == true)

	{

		dE('advanced' + pmask + fmask, -1);

		reset_opacity(1);

		display_checkboxes(false);

		return;

	}

	// no need to set anything if we are clicking on the same tab again

	if (new_tab == old_tab && !adv)

	{

		return;

	}

	// init colours

	if (adv && (pmask + fmask) != (active_pmask + active_fmask))

	{

		init_colours(pmask + fmask);

		display_checkboxes(true);

		reset_opacity(1);

	} 

	else if (adv) 

	{

		//Checkbox might have been clicked, but we need full visibility

		display_checkboxes(true);

		reset_opacity(1);

	}

	// set active tab

	old_tab.className = old_tab.className.replace(/\ activetab/g, '');

	new_tab.className = new_tab.className + ' activetab';

	if (id == active_option && adv != true)

	{

		return;

	}

	dE('options' + active_option, -1);

	//hiding and showing the checkbox

	if (document.getElementById('checkbox' + active_pmask + active_fmask))

	{

		dE('checkbox' + pmask + fmask, -1);	

		if ((pmask + fmask) != (active_pmask + active_fmask))

		{

			document.getElementById('checkbox' + active_pmask + active_fmask).style.display = 'inline';

		}

	}

	if (!view)

	{

		dE('advanced' + active_pmask + active_fmask, -1);

	}

	if (!view)

	{

		dE('advanced' + pmask + fmask, 1);

	}

	dE('options' + id, 1);

	active_pmask = pmask;

	active_fmask = fmask;

	active_cat = cat;

}

/**

* Mark all radio buttons in one panel

* id = table ID container, s = status ['y'/'u'/'n']

*/

function mark_options(id, s)

{

	var t = document.getElementById(id);

	if (!t)

	{

		return;

	}

	var rb = t.getElementsByTagName('input');

	for (var r = 0; r < rb.length; r++)

	{

		if (rb[r].id.substr(rb[r].id.length-1) == s)

		{

			rb[r].checked = true;

		}

	}

}

function mark_one_option(id, field_name, s)

{

	var t = document.getElementById(id);

	if (!t)

	{

		return;

	}

	var rb = t.getElementsByTagName('input');

	for (var r = 0; r < rb.length; r++)

	{

		if (rb[r].id.substr(rb[r].id.length-field_name.length-3, field_name.length) == field_name && rb[r].id.substr(rb[r].id.length-1) == s)

		{

			rb[r].checked = true;

		}

	}

}

/**

* Reset role dropdown field to Select role... if an option gets changed

*/

function reset_role(id)

{

	var t = document.getElementById(id);

	if (!t)

	{

		return;

	}

	t.options[0].selected = true;

}

/**

* Load role and set options accordingly

*/

function set_role_settings(role_id, target_id)

{

	settings = role_options[role_id];

	if (!settings)

	{

		return;

	}

	// Mark all options to no (unset) first...

	mark_options(target_id, 'u');

	for (var r in settings)

	{

		mark_one_option(target_id, r, (settings[r] == 1) ? 'y' : 'n');

	}

}