/* toggle visibility of an element by its id

 * & set current visibility status in a cookie

 * XXX whenever used outside of preferences, don't forget to

 *     move me in a more appropriate place

 */

function toggleVisibility(elemId) {

    _clearPreviousMessages();

    jqNode(elemId).toggleClass('hidden');

}

function closeFieldset(fieldsetid){

    var linklabel = _('open all');

    var linkhref = 'javascript:openFieldset("' +fieldsetid + '")'

    _toggleFieldset(fieldsetid, 1, linklabel, linkhref)

}

function openFieldset(fieldsetid){

    var linklabel = _('close all');

    var linkhref = 'javascript:closeFieldset("'+ fieldsetid + '")'

    _toggleFieldset(fieldsetid, 0, linklabel, linkhref)

}

function _toggleFieldset(fieldsetid, closeaction, linklabel, linkhref){

    jQuery('#'+fieldsetid).find('div.openlink').each(function(){

	    var link = A({'href' : "javascript:noop();",

			  'onclick' : linkhref},

			  linklabel)

	    jQuery(this).empty().append(link);

	});

    jQuery('#'+fieldsetid).find('fieldset[id]').each(function(){

	    var fieldset = jQuery(this);

	    if(closeaction){

		fieldset.addClass('hidden')

	    }else{

		fieldset.removeClass('hidden');

		linkLabel = (_('open all'));

	    }

	});

}

function validatePrefsForm(formid){

    var form = getNode(formid);

    freezeFormButtons(formid);

    try {

	var d = _sendForm(formid, null);

    } catch (ex) {

	log('got exception', ex);

	return false;

    }

    function _callback(result, req) {

	_clearPreviousMessages();

	_clearPreviousErrors(formid);

	// success

	if(result[0]){

	    return submitSucces(formid)

	}

 	// Failures

	unfreezeFormButtons(formid);

	var descr = result[1];

        if (!isArrayLike(descr) || descr.length != 2) {

	   log('got strange error :', descr);

	   updateMessage(descr);

	   return ;

	}

        _displayValidationerrors(formid, descr[0], descr[1]);

	var dom = DIV({'class':'critical'},

		      _("please correct errors below"));

	jQuery(form).find('div.formsg').empty().append(dom);

	updateMessage(_(""));

	return false;

    }

    d.addCallback(_callback);

    return false;

}

function submitSucces(formid){

    var form = jQuery('#'+formid);

    setCurrentValues(form);

    var dom = DIV({'class':'message'},

		  _("changes applied"));

    jQuery(form).find('div.formsg').empty().append(dom);

    jQuery(form).find('input').removeClass('changed');

    checkValues(form, true);

    return;

}

function _clearPreviousMessages() {

    jQuery('div#appMsg').addClass('hidden');

    jQuery('div.formsg').empty();

}

function _clearPreviousErrors(formid) {

    jQuery('#' + formid + ' span.error').remove();

}

function checkValues(form, success){

    var unfreezeButtons = false;

    jQuery(form).find('select').each(function () { 

	    unfreezeButtons = _checkValue(jQuery(this), unfreezeButtons);

	});

    jQuery(form).find('[type=text]').each(function () {

	    unfreezeButtons = _checkValue(jQuery(this), unfreezeButtons);

	});

    jQuery(form).find('input[type=radio]').each(function () { 

	    if (jQuery(this).attr('checked')){

		unfreezeButtons = _checkValue(jQuery(this), unfreezeButtons);

	    }

     }); 

    if (unfreezeButtons){

	unfreezeFormButtons(form.attr('id'));

    }else{

	if (!success){

	    _clearPreviousMessages();

	}

	_clearPreviousErrors(form.attr('id'));

	freezeFormButtons(form.attr('id'));

    }

}

function _checkValue(input, unfreezeButtons){

     var currentValueInput = jQuery("input[id=current-" + input.attr('name') + "]");

     if (currentValueInput.attr('value') != input.attr('value')){

	 input.addClass('changed');

	 unfreezeButtons = true;

     }else{

	 input.removeClass('changed');

	 jQuery("span[id=err-" + input.attr('id') + "]").remove();

     }	

     input.removeClass('error');

     return unfreezeButtons

}

function setCurrentValues(form){

    jQuery(form).find('input[id^=current-value]').each(function () { 

	    var currentValueInput = jQuery(this);

	    var name = currentValueInput.attr('id').split('-')[1];

	    jQuery(form).find("[name=" + name + "]").each(function (){

		    var input = jQuery(this);

		    if(input.attr('type')=='radio'){

			if(input.attr('checked')){

			    log(input.attr('value'));

			    currentValueInput.attr('value', input.attr('value'));

			}

		    }else{

			currentValueInput.attr('value', input.attr('value'));

		    }

		});

    });

}

function initEvents(){

  jQuery('form').each(function() { 

	  var form = jQuery(this);

	  freezeFormButtons(form.attr('id'));

	  form.find('input[type=text]').keyup(function(){  

		  checkValues(form);	   

          });

	  form.find('input[type=radio]').change(function(){  

		  checkValues(form);	   

          });

	  form.find('select').change(function(){  

		  checkValues(form);	 

          });

    });

}

$(document).ready(function() {

	initEvents();

});