/*
 * @author stuartb
 * @date 2008.10.08
 * @description Wizard forms made easy.
 */
jQuery.fn.wizard = function(settings)
{
  settings = jQuery.extend({
show: function(element) { return true; },
prevnext: true,
submitpage: null
}, settings);

// Hide all pages save the first.
jQuery(this).children(".wizardpage").hide();
jQuery(this).children(".wizardpage:first").show();
settings.show(jQuery(this).children(".wizardpage:first"));

// Also highlight the first nav item.
jQuery(this).children(".wizard-nav").children("a:first").addClass("active");

// Wire progress thingy
jQuery(this).children(".wizard-nav").children("a").click(function(){
    var target = jQuery(this).attr("href");
    jQuery(this).parent().parent().children(".wizardpage").hide();
    jQuery(target).fadeIn('slow');
    settings.show(jQuery(target));
    jQuery(this).parent().children('a').removeClass('active', 'slow');
    jQuery(this).addClass('active', 'slow');
    return false;
    });

// Prevent form submission on a wizard page...
jQuery(this).children(".wizardpage").each(function(i){
    // unless there is a submit button on this page
    if((settings.submitpage == null && jQuery(this).find('input[type="submit"]').length < 1) ||
      (settings.submitpage != null && !$(this).is(settings.submitpage)))
    {
    $(this).find('input,select').keypress(function(event){
      return event.keyCode != 13;
      });
    }
    });

if(settings.prevnext)
{
  // Add prev/next step buttons
  jQuery(this).children(".wizardpage")
    .append('<div class="row wizardcontrols"></div>')
    .children(".wizardcontrols")
    .append('<input type="button" class="wizardprev" value="< Back" /><input type="button" class="wizardnext" value="Next >" />');
  jQuery('.wizardpage:first input[type="button"].wizardprev').hide(); // hide prev button on first page
  jQuery('.wizardpage:last input[type="button"].wizardnext').hide();  // hide next button on last page

  // Wire prev/next step buttons
  jQuery(this).children(".wizardpage")
    .children(".wizardcontrols")
    .children('input[type="button"].wizardprev').click(function(){
        var wizardpage = jQuery(this).parent().parent(); // wizardcontrols div, wizardpage div
        var wizardnav  = wizardpage.parent().children(".wizard-nav")

        wizardpage.hide();
        wizardpage.prev().fadeIn();
        settings.show(wizardpage.prev());

        try{ wizardpage.prev().find("input:first").focus(); } catch(err) {}
        wizardnav.children('a').removeClass('active', 'slow');
        wizardnav.children('a[href="#' + wizardpage.attr('id') + '"]').prev().addClass('active', 'slow');
        });
  jQuery(this).children(".wizardpage")
    .children(".wizardcontrols")
    .children('input[type="button"].wizardnext').click(function(){
        var wizardpage = jQuery(this).parent().parent(); // wizardcontrols div, wizardpage div
        var wizardnav  = wizardpage.parent().children(".wizard-nav")

        wizardpage.hide();
        wizardpage.next().fadeIn();
        settings.show(wizardpage.next());

        try{ wizardpage.prev().find("input:first").focus(); } catch(err) {}
        wizardpage.prev().find("input:first").focus();
        wizardnav.children('a').removeClass('active', 'slow');
        wizardnav.children('a[href="#' + wizardpage.attr('id') + '"]').next().addClass('active', 'slow');
        });
}

return jQuery(this);
};