(function($, undefined) {
  /*
   * Unobtrusive scripting adapter for jQuery, largely taken from
   * the wonderful https://github.com/rails/jquery-ujs
   *
   *
   * Released under the MIT license
   *
   */
  if($.web2py !== undefined) {
    $.error('web2py.js has already been loaded!');
  }


  String.prototype.reverse = function() {
    return this.split('').reverse().join('');
  };
  var web2py;

  $.web2py = web2py = {

      popup: function(url) {
        /* popup a window */
        newwindow = window.open(url, 'name', 'height=400,width=600');
        if(window.focus) newwindow.focus();
        return false;
      },
      collapse: function(id) {
        /* toggle an element */
        $('#' + id).slideToggle();
      },
      fade: function(id, value) {
        /*fade something*/
        if(value > 0) $('#' + id).hide().fadeIn('slow');
        else $('#' + id).show().fadeOut('slow');
      },
      ajax: function(u, s, t) {
        /*simple ajax function*/
        query = '';
        if(typeof s == "string") {
          d = $(s).serialize();
          if(d) {
            query = d;
          }
        } else {
          pcs = [];
          if(s != null && s != undefined)
            for(i = 0; i < s.length; i++) {
              q = $("[name=" + s[i] + "]").serialize();
              if(q) {
                pcs.push(q);
              }
            }
          if(pcs.length > 0) {
            query = pcs.join("&");
          }
        }
        $.ajax({
          type: "POST",
          url: u,
          data: query,
          success: function(msg) {
            if(t) {
              if(t == ':eval') eval(msg);
              else if(typeof t == 'string') $("#" + t).html(msg);
              else t(msg);
            }
          }
        });
      },
      ajax_fields: function(target) {
        /*
         *this attaches something to a newly loaded fragment/page
         * Ideally all events should be bound to the document, so we can avoid calling
         * this over and over... all will be bound to the document
         */
        /*adds btn class to buttons*/
        $('button', target).addClass('btn');
        $('form input[type="submit"], form input[type="button"]', target).addClass('btn');
        /* javascript for PasswordWidget*/
        $('input[type=password][data-w2p_entropy]', target).each(function() {
          web2py.validate_entropy($(this));
        });
        /* javascript for ListWidget*/
        $('ul.w2p_list', target).each(function() {
          function pe(ul, e) {
            var new_line = ml(ul);
            rel(ul);
            if($(e.target).parent().is(':visible')) {
              /* make sure we didn't delete the element before we insert after */
              new_line.insertAfter($(e.target).parent());
            } else {
              /* the line we clicked on was deleted, just add to end of list */
              new_line.appendTo(ul);
            }
            new_line.find(":text").focus();
            return false;
          }

          function rl(ul, e) {
            if($(ul).children().length > 1) {
              /* only remove if we have more than 1 item so the list is never empty */
              $(e.target).parent().remove();
            }
          }

          function ml(ul) {
            /* clone the first field */
            var line = $(ul).find("li:first").clone(true);
            line.find(':text').val('');
            return line;
          }

          function rel(ul) {
            /* keep only as many as needed*/
            $(ul).find("li").each(function() {
              var trimmed = $.trim($(this.firstChild).val());
              if(trimmed == '') $(this).remove();
              else $(this.firstChild).val(trimmed);
            });
          }
          var ul = this;
          $(ul).find(":text").after('<a href="#">+</a>&nbsp;<a href="#">-</a>').keypress(function(e) {
            return(e.which == 13) ? pe(ul, e) : true;
          }).next().click(function(e) {
            pe(ul, e);
            e.preventDefault();
          }).next().click(function(e) {
            rl(ul, e);
            e.preventDefault();
          });
        });
      },
      ajax_init: function(target) {
        /*called whenever a fragment gets loaded */
        $('.hidden', target).hide();
        web2py.manage_errors(target);
        web2py.ajax_fields(target);
        web2py.show_if_handler(target);
        web2py.component_handler(target);
      },
      /* manage errors in forms */
      manage_errors: function(target) {
        $('div.error', target).hide().slideDown('slow');
      },
      after_ajax: function(xhr) {
        /* called whenever an ajax request completes */
        var command = xhr.getResponseHeader('web2py-component-command');
        var flash = xhr.getResponseHeader('web2py-component-flash');
        if(command !== null) {
          eval(decodeURIComponent(command));
        }
        if(flash) {
          web2py.flash(decodeURIComponent(flash))
        }
      },
      event_handlers: function() {
        /*
         * This is called once for page
         * Ideally it should bound all the things that are needed
         * and require no dom manipulations
         */
        var doc = $(document);
        doc.on('click', '.flash', function(e) {
          var t = $(this);
          if(t.css('top') == '0px') t.slideUp('slow');
          else t.fadeOut();
        });
        doc.on('keyup', 'input.integer', function() {
          var nvalue = this.value.reverse().replace(/[^0-9\-]|\-(?=.)/g, '').reverse();
          if(this.value != nvalue) this.value = nvalue;
        });
        doc.on('keyup', 'input.double, input.decimal', function() {
          var nvalue = this.value.reverse().replace(/[^0-9\-\.,]|[\-](?=.)|[\.,](?=[0-9]*[\.,])/g, '').reverse();
          if(this.value != nvalue) this.value = nvalue;
        });
        var confirm_message = (typeof w2p_ajax_confirm_message != 'undefined') ? w2p_ajax_confirm_message : "Are you sure you want to delete this object?";
        doc.on('click', "input[type='checkbox'].delete", function() {
          if(this.checked)
            if(!web2py.confirm(confirm_message)) this.checked = false;
        });
        var datetime_format = (typeof w2p_ajax_datetime_format != 'undefined') ? w2p_ajax_datetime_format : "%Y-%m-%d %H:%M:%S";
        doc.on('click', "input.datetime", function() {
          var tformat = $(this).data('w2p_datetime_format');
          var active = $(this).data('w2p_datetime');
          var format = (typeof tformat != 'undefined') ? tformat : datetime_format;
          if(active === undefined) {
            Calendar.setup({
              inputField: this,
              ifFormat: format,
              showsTime: true,
              timeFormat: "24"
            });
            $(this).attr('autocomplete', 'off');
            $(this).data('w2p_datetime', 1);
            $(this).trigger('click');
          }
        });
        var date_format = (typeof w2p_ajax_date_format != 'undefined') ? w2p_ajax_date_format : "%Y-%m-%d";
        doc.on('click', "input.date", function() {
          var tformat = $(this).data('w2p_date_format');
          var active = $(this).data('w2p_date');
          var format = (typeof tformat != 'undefined') ? tformat : date_format;
          if(active === undefined) {
            Calendar.setup({
              inputField: this,
              ifFormat: format,
              showsTime: false
            });
            $(this).data('w2p_date', 1);
            $(this).attr('autocomplete', 'off');
            $(this).trigger('click');
          }
        });
        doc.on('focus', "input.time", function() {
          var active = $(this).data('w2p_time');
          if(active === undefined) {
            $(this).timeEntry({
              spinnerImage: ''
            }).attr('autocomplete', 'off');
            $(this).data('w2p_time', 1);
          }
        });
        /* help preventing double form submission for normal form (not LOADed) */
        $(doc).on('submit', 'form', function() {
          var submit_button = $(this).find(web2py.formInputClickSelector);
          web2py.disableElement(submit_button);
        });
        doc.ajaxSuccess(function(e, xhr) {
          var redirect = xhr.getResponseHeader('web2py-redirect-location');
          if(redirect !== null) {
            window.location = redirect;
          };
          /* run this here only if this Ajax request is NOT for a web2py component. */
          if(xhr.getResponseHeader('web2py-component-content') == null) {
            web2py.after_ajax(xhr);
          };
        });

        doc.ajaxError(function(e, xhr, settings, exception) {
          /*personally I don't like it.
           *if there's an error it it flashed and can be removed
           *as any other message
           *doc.off('click', '.flash')
           */
          switch(xhr.status) {
            case 500:
              web2py.flash(ajax_error_500);
          }
        });

      },
      trap_form: function(action, target) {
        /* traps any LOADed form */
        $('#' + target + ' form').each(function(i) {
          var form = $(this);
          if(form.hasClass('no_trap')) {
            return;
          }
          form.attr('data-w2p_target', target);
          var url = form.attr('action');
          if((url === "") || (url === "#") || (typeof url === 'undefined')) {
            /* form has no action. Use component url. */
            url = action;
          }
          form.submit(function(e) {
            web2py.disableElement(form.find(web2py.formInputClickSelector));
            web2py.hide_flash();
            web2py.ajax_page('post', url, form.serialize(), target, form);
            e.preventDefault();
          });
          form.on('click', web2py.formInputClickSelector, function(e) {
            e.preventDefault();
            var input_name = $(this).attr('name');
            if(input_name != undefined) {
              $('<input type="hidden" />').attr('name', input_name)
                .attr('value', $(this).val()).appendTo(form)
            }
            form.trigger('submit');
          });
        });
      },
      ajax_page: function(method, action, data, target, element) {
        /* element is a new parameter, but should be put be put in front */
        if(element == undefined) element = $(document);
        /* if target is not there, fill it with something that there isn't in the page*/
        if(target == undefined || target == '') target = 'w2p_none';
        if(web2py.fire(element, 'ajax:before', null, target)) { /*test a usecase, should stop here if returns false */
          $.ajax({
            'type': method,
            'url': action,
            'data': data,
            'beforeSend': function(xhr, settings) {
              xhr.setRequestHeader('web2py-component-location', document.location);
              xhr.setRequestHeader('web2py-component-element', target);
              return web2py.fire(element, 'ajax:beforeSend', [xhr, settings], target); //test a usecase, should stop here if returns false
            },
            'success': function(data, status, xhr) {
              /*bummer for form submissions....the element is not there after complete
               *because it gets replaced by the new response....
               */
              web2py.fire(element, 'ajax:success', [data, status, xhr], target);
            },
            'error': function(xhr, status, error) {
              /*bummer for form submissions....in addition to the element being not there after
               *complete because it gets replaced by the new response, standard form
               *handling just returns the same status code for good and bad
               *form submissions (i.e. that triggered a validator error)
               */
              web2py.fire(element, 'ajax:error', [xhr, status, error], target);
            },
            'complete': function(xhr, status) {
              web2py.fire(element, 'ajax:complete', [xhr, status], target);
              web2py.updatePage(xhr, target); /* Parse and load the html received */
              web2py.trap_form(action, target);
              web2py.ajax_init('#' + target);
              web2py.after_ajax(xhr);
            }
          });
        }
      },
      component: function(action, target, timeout, times, el) {
        /* element is a new parameter, but should be put in front */
        $(function() {
          var jelement = $("#" + target);
          var element = jelement.get(0);
          var statement = "jQuery('#" + target + "').get(0).reload();";
          element.reload = function() {
            /* Continue if times is Infinity or
             * the times limit is not reached
             */
            if(element.reload_check()) {
              web2py.ajax_page('get', action, null, target, el);
            }
          };
          /* Method to check timing limit */
          element.reload_check = function() {
            if(jelement.hasClass('w2p_component_stop')) {
              clearInterval(this.timing);
              return false;
            }
            if(this.reload_counter == Infinity) {
              return true;
            } else {
              if(!isNaN(this.reload_counter)) {
                this.reload_counter -= 1;
                if(this.reload_counter < 0) {
                  if(!this.run_once) {
                    clearInterval(this.timing);
                    return false;
                  }
                } else {
                  return true;
                }
              }
            }
            return false;
          };
          if(!isNaN(timeout)) {
            element.timeout = timeout;
            element.reload_counter = times;
            if(times > 1) {
              /* Multiple or infinite reload
               * Run first iteration
               */
              web2py.ajax_page('get', action, null, target, el);
              element.run_once = false;
              element.timing = setInterval(statement, timeout);
              element.reload_counter -= 1;
            } else if(times == 1) {
              /* Run once with timeout */
              element.run_once = true;
              element.setTimeout = setTimeout;
              element.timing = setTimeout(statement, timeout);
            }
          } else {
            /* run once (no timeout specified) */
            element.reload_counter = Infinity;
            web2py.ajax_page('get', action, null, target, el);
          }
        });
      },
      updatePage: function(xhr, target) {
        var t = $('#' + target);
        var html = $.parseHTML(xhr.responseText, document, true);
        var title_elements = $(html).filter('title').add($(html).find('title'));
        var title = title_elements.last().text();
        if(title) {
          title_elements.remove(); /* Remove any title elements from the response */
          document.title = $.trim(title); /* Set the new document title */
        }
        var content = xhr.getResponseHeader('web2py-component-content');
        if(content == 'prepend') t.prepend(xhr.responseText);
        else if(content == 'append') t.append(xhr.responseText);
        else if(content != 'hide') t.html(html);
      },
      calc_entropy: function(mystring) {
        /* calculate a simple entropy for a given string */
        var csets = new Array(
          'abcdefghijklmnopqrstuvwxyz', 'ABCDEFGHIJKLMNOPQRSTUVWXYZ',
          '0123456789', '!@#$\%^&*()', '~`-_=+[]{}\|;:\'",.<>?/',
          '0123456789abcdefghijklmnopqrstuvwxyz');
        var score = 0,
          other = {},
          seen = {},
          lastset = null,
          mystringlist = mystring.split('');
        for(var i = 0; i < mystringlist.length; i++) { /* classify this character */
          var c = mystringlist[i],
            inset = 5;
          for(var j = 0; j < csets.length; j++)
            if(csets[j].indexOf(c) != -1) {
              inset = j;
              break;
            }
            /*calculate effect of character on alphabet size */
          if(!(inset in seen)) {
            seen[inset] = 1;
            score += csets[inset].length;
          } else if(!(c in other)) {
            score += 1;
            other[c] = 1;
          }
          if(inset != lastset) {
            score += 1;
            lastset = inset;
          }
        }
        var entropy = mystring.length * Math.log(score) / 0.6931471805599453;
        return Math.round(entropy * 100) / 100
      },
      validate_entropy: function(myfield, req_entropy) {
        if(myfield.data('w2p_entropy') != undefined) req_entropy = myfield.data('w2p_entropy');
        var validator = function() {
          var v = (web2py.calc_entropy(myfield.val()) || 0) / req_entropy;
          var r = 0,
            g = 0,
            b = 0,
            rs = function(x) {
              return Math.round(x * 15).toString(16)
            };
          if(v <= 0.5) {
            r = 1.0;
            g = 2.0 * v;
          } else {
            r = (1.0 - 2.0 * (Math.max(v, 0) - 0.5));
            g = 1.0;
          }
          var color = '#' + rs(r) + rs(g) + rs(b);
          myfield.css('background-color', color);
          entropy_callback = myfield.data('entropy_callback');
          if(entropy_callback) entropy_callback(v);
        }
        if(!myfield.hasClass('entropy_check')) myfield.on('keyup', validator).on('keydown', validator).addClass('entropy_check');
      },
      web2py_websocket: function(url, onmessage, onopen, onclose) {
        if("WebSocket" in window) {
          var ws = new WebSocket(url);
          ws.onopen = onopen ? onopen : (function() {});
          ws.onmessage = onmessage;
          ws.onclose = onclose ? onclose : (function() {});
          return true; /* supported */
        } else return false; /* not supported */
      },
      /* new from here */
      /* Form input elements bound by web2py.js */
      formInputClickSelector: 'input[type=submit], input[type=image], button[type=submit], button:not([type])',
      /* Form input elements disabled during form submission */
      disableSelector: 'input, button, textarea, select',
      /* Form input elements re-enabled after form submission */
      enableSelector: 'input:disabled, button:disabled, textarea:disabled, select:disabled',
      /* Triggers an event on an element and returns false if the event result is false */
      fire: function(obj, type, data, target) {
        var event = $.Event(type, {
          'containerTarget': $('#' + target)[0]
        });
        obj.trigger(event, data);
        return event.result !== false;
      },
      /* Helper function, needed to provide consistent behavior in IE */
      stopEverything: function(e) {
        $(e.target).trigger('w2p:everythingStopped');
        e.stopImmediatePropagation();
        return false;
      },
      confirm: function(message) {
        return confirm(message);
      },
      /* replace element's html with the 'data-disable-with' after storing original html
       * and prevent clicking on it */
      disableElement: function(el) {
        el.addClass('disabled');
        var method = el.is('input') ? 'val' : 'html';
        //method = el.attr('name') ? 'html' : 'val';
        var disable_with_message = (typeof w2p_ajax_disable_with_message != 'undefined') ? w2p_ajax_disable_with_message : "Working...";
        /*store enabled state if not already disabled */
        if(el.data('w2p_enable_with') === undefined) {
          el.data('w2p_enable_with', el[method]());
        }
        /*if you don't want to see "working..." on buttons, replace the following
         * two lines with this one
         * el.data('w2p_disable_with', el[method]());
         */
        if((el.data('w2p_disable_with') == 'default') || (el.data('w2p_disable_with') === undefined)) {
          el.data('w2p_disable_with', disable_with_message);
        }

        /* set to disabled state*/
        el[method](el.data('w2p_disable_with'));

        el.bind('click.w2pDisable', function(e) { /* prevent further clicking*/
          return web2py.stopEverything(e);
        });
      },

      /* restore element to its original state which was disabled by 'disableElement' above*/
      enableElement: function(el) {
        var method = el.is('input') ? 'val' : 'html';
        if(el.data('w2p_enable_with') !== undefined) {
          /* set to old enabled state */
          el[method](el.data('w2p_enable_with'));
          el.removeData('w2p_enable_with');
        }
        el.removeClass('disabled');
        el.unbind('click.w2pDisable');
      },
      /*convenience wrapper, internal use only */
      simple_component: function(action, target, element) {
        web2py.component(action, target, 0, 1, element);
      },
      /*helper for flash messages*/
      flash: function(message, status) {
        var flash = $('.flash');
        web2py.hide_flash();
        flash.html(message).addClass(status);
        if(flash.html()) flash.append('<span id="closeflash"> &times; </span>').slideDown();
      },
      hide_flash: function() {
        $('.flash').fadeOut(0).html('');
      },
      show_if_handler: function(target) {
        var triggers = {};
        var show_if = function() {
          var t = $(this);
          var id = t.attr('id');
          t.attr('value', t.val());
          for(var k = 0; k < triggers[id].length; k++) {
            var dep = $('#' + triggers[id][k], target);
            var tr = $('#' + triggers[id][k] + '__row', target);
            if(t.is(dep.attr('data-show-if'))) tr.slideDown();
            else tr.hide();
          }
        };
        $('[data-show-trigger]', target).each(function() {
          var name = $(this).attr('data-show-trigger');
          // The field exists only when creating/editing a row
          if($('#' + name).length) {
            if(!triggers[name]) triggers[name] = [];
            triggers[name].push($(this).attr('id'));
          }
        });
        for(var name in triggers) {
          $('#' + name, target).change(show_if).keyup(show_if);
          show_if.call($('#' + name, target));
        };
      },
      component_handler: function(target) {
        $('div[data-w2p_remote]', target).each(function() {
          var remote, times, timeout, target;
          var el = $(this);
          remote = el.data('w2p_remote');
          times = el.data('w2p_times');
          timeout = el.data('w2p_timeout');
          target = el.attr('id');
          web2py.component(remote, target, timeout, times, $(this));
        })
      },
      a_handler: function(el, e) {
        e.preventDefault();
        var method = el.data('w2p_method');
        var action = el.attr('href');
        var target = el.data('w2p_target');
        var confirm_message = el.data('w2p_confirm');

        var pre_call = el.data('w2p_pre_call');
        if(pre_call != undefined) {
          eval(pre_call);
        }
        if(confirm_message) {
            if(confirm_message == 'default') 
                confirm_message = w2p_ajax_confirm_message || 
                    'Are you sure you want to delete this object?';
            if(!web2py.confirm(confirm_message)) {
                web2py.stopEverything(e);
                return;
            }
        }
        if(target == undefined) {
          if(method == 'GET') {
            web2py.ajax_page('get', action, [], '', el);
          } else if(method == 'POST') {
            web2py.ajax_page('post', action, [], '', el);
          }
        } else {
          if(method == 'GET') {
            web2py.ajax_page('get', action, [], target, el);
          } else if(method == 'POST') {
            web2py.ajax_page('post', action, [], target, el);
          }
        }
      },
      a_handlers: function() {
        var el = $(document);
        el.on('click', 'a[data-w2p_method]', function(e) {
          web2py.a_handler($(this), e);
        });
        /* removal of element should happen only on success */
        el.on('ajax:success', 'a[data-w2p_method][data-w2p_remove]', function(e) {
          var el = $(this);
          var toremove = el.data('w2p_remove');
          if(toremove != undefined) {
            toremove = el.closest(toremove);
            if(!toremove.length) {
              /*this enables removal of whatever selector if a closest is not found */
              toremove = $(toremove);
            }
            toremove.remove();
          }
        });
        el.on('ajax:beforeSend', 'a[data-w2p_method][data-w2p_disable_with]', function(e) {
          web2py.disableElement($(this));
        });
        /*re-enable click on completion*/
        el.on('ajax:complete', 'a[data-w2p_method][data-w2p_disable_with]', function(e) {
          web2py.enableElement($(this));
        });
      },
      /* Disables form elements:
  - Caches element value in 'w2p_enable_with' data store
  - Replaces element text with value of 'data-disable-with' attribute
  - Sets disabled property to true
    */
      disableFormElements: function(form) {
        form.find(web2py.disableSelector).each(function() {
          var element = $(this),
            method = element.is('button') ? 'html' : 'val';
          var disable_with = element.data('w2p_disable_with');
          if(disable_with == undefined) {
            element.data('w2p_disable_with', element[method]())
          }
          if(element.data('w2p_enable_with') === undefined) {
            element.data('w2p_enable_with', element[method]());
          }
          element[method](element.data('w2p_disable_with'));
          element.prop('disabled', true);
        });
      },

      /* Re-enables disabled form elements:
  -     Replaces element text with cached value from 'w2p_enable_with' data store (created in `disableFormElements`)
  -     Sets disabled property to false
    */
      enableFormElements: function(form) {
        form.find(web2py.enableSelector).each(function() {
          var element = $(this),
            method = element.is('button') ? 'html' : 'val';
          if(element.data('w2p_enable_with')) {
            element[method](element.data('w2p_enable_with'));
            element.removeData('w2p_enable_with');
          }
          element.prop('disabled', false);
        });
      },
      form_handlers: function() {
        var el = $(document);
        el.on('ajax:beforeSend', 'form[data-w2p_target]', function(e) {
          web2py.disableFormElements($(this));
        });
        el.on('ajax:complete', 'form[data-w2p_target]', function(e) {
          web2py.enableFormElements($(this));
        });
      },
      /* Invalidate and force reload of a web2py component
       */
      invalidate: function(target) {
        $('div[data-w2p_remote]', target).each(function() {
          var el = $('#' + $(this).attr('id')).get(0);
          if(el.timing !== undefined) { // Block triggering regular routines
            clearInterval(el.timing);
          }
        });
        $.web2py.component_handler(target);
      },
      main_hook: function() {
        var flash = $('.flash');
        flash.hide();
        if(flash.html()) web2py.flash(flash.html());
        web2py.ajax_init(document);
        web2py.event_handlers();
        web2py.a_handlers();
        web2py.form_handlers();
      }
    }
    /*end of functions */
    /*main hook*/
  $(function() {
    web2py.main_hook();
  });

})(jQuery);

/* compatibility code - start */
ajax = jQuery.web2py.ajax;
web2py_component = jQuery.web2py.component;
web2py_websocket = jQuery.web2py.web2py_websocket;
web2py_ajax_page = jQuery.web2py.ajax_page;
/*needed for IS_STRONG(entropy)*/
web2py_validate_entropy = jQuery.web2py.validate_entropy;
/*needed for crud.search and SQLFORM.grid's search*/
web2py_ajax_fields = jQuery.web2py.ajax_fields;
/*used for LOAD(ajax=False)*/
web2py_trap_form = jQuery.web2py.trap_form;

/*undocumented - rare*/
popup = jQuery.web2py.popup;
collapse = jQuery.web2py.collapse;
fade = jQuery.web2py.fade;

/* internals - shouldn't be needed
web2py_ajax_init = jQuery.web2py.ajax_init;
web2py_event_handlers = jQuery.web2py.event_handlers;
web2py_trap_link = jQuery.web2py.trap_link;
web2py_calc_entropy = jQuery.web2py.calc_entropy;
*/
/* compatibility code - end*/
