/*
 * Jeditable - jQuery in place edit plugin
 *
 * Copyright (c) 2006-2008 Mika Tuupola, Dylan Verheul
 *
 * Licensed under the MIT license:
 *   http://www.opensource.org/licenses/mit-license.php
 *
 * Project home:
 *   http://www.appelsiini.net/projects/jeditable
 *
 * Based on editable by Dylan Verheul <dylan_at_dyve.net>:
 *    http://www.dyve.net/jquery/?editable
 *
 * Revision: $Id: jquery.jeditable.js 437 2008-10-07 14:53:18Z tuupola $
 *
 */

/**
 * Version 1.6.1
 *
 * ** means there is basic unit tests for this parameter.
 *
 * @name  Jeditable
 * @type  jQuery
 * @param String  target             (POST) URL or function to send edited content to **
 * @param Hash    options            additional options
 * @param String  options[method]    method to use to send edited content (POST or PUT) **
 * @param Function options[callback] Function to run after submitting edited content **
 * @param String  options[name]      POST parameter name of edited content
 * @param String  options[id]        POST parameter name of edited div id
 * @param Hash    options[submitdata] Extra parameters to send when submitting edited content.
 * @param String  options[type]      text, textarea or select (or any 3rd party input type) **
 * @param Integer options[rows]      number of rows if using textarea **
 * @param Integer options[cols]      number of columns if using textarea **
 * @param Mixed   options[height]    'auto', 'none' or height in pixels **
 * @param Mixed   options[width]     'auto', 'none' or width in pixels **
 * @param String  options[loadurl]   URL to fetch input content before editing **
 * @param String  options[loadtype]  Request type for load url. Should be GET or POST.
 * @param String  options[loadtext]  Text to display while loading external content.
 * @param Hash    options[loaddata]  Extra parameters to pass when fetching content before editing.
 * @param String  options[data]      Or content given as paramameter. **
 * @param String  options[indicator] indicator html to show when saving
 * @param String  options[tooltip]   optional tooltip text via title attribute **
 * @param String  options[event]     jQuery event such as 'click' of 'dblclick' **
 * @param String  options[onblur]    'cancel', 'submit', 'ignore' or function ??
 * @param String  options[submit]    submit button value, empty means no button **
 * @param String  options[cancel]    cancel button value, empty means no button **
 * @param String  options[cssclass]  CSS class to apply to input form. 'inherit' to copy from parent. **
 * @param String  options[style]     Style to apply to input form 'inherit' to copy from parent. **
 * @param String  options[select]    true or false, when true text is highlighted ??
 * @param String  options[placeholder] Placeholder text or html to insert when element is empty. **
 *
 */

(function($) {
  $.fn.editable = function(target, options) {
    var settings = {
      target     : target,
      name       : 'value',
      id         : 'id',
      type       : 'text',
      width      : 'auto',
      height     : 'auto',
      event      : 'click',
      onblur     : 'cancel',
      loadtype   : 'GET',
      loadtext   : 'Loading...',
      placeholder: 'Click to edit',
      loaddata   : {},
      submitdata : {}
    };

    if(options) { $.extend(settings, options); }

    /* setup some functions */
    var plugin   = $.editable.types[settings.type].plugin || function() { };
    var submit   = $.editable.types[settings.type].submit || function() { };
    var buttons  = $.editable.types[settings.type].buttons
    || $.editable.types['defaults'].buttons;
    var content  = $.editable.types[settings.type].content
    || $.editable.types['defaults'].content;
    var element  = $.editable.types[settings.type].element
    || $.editable.types['defaults'].element;
    var reset    = $.editable.types[settings.type].reset
    || $.editable.types['defaults'].reset;
    var callback = settings.callback || function() { };

    /* add custom event if it does not exist */
    if  (!$.isFunction($(this)[settings.event])) {
      $.fn[settings.event] = function(fn){
        return fn ? this.bind(settings.event, fn) : this.trigger(settings.event);
      }
    }

    /* TODO: remove this when form is displayed */
    $(this).attr('title', settings.tooltip);

    settings.autowidth  = 'auto' == settings.width;
    settings.autoheight = 'auto' == settings.height;

    return this.each(function() {

      /* save this to self because this changes when scope changes */
      var self = this;

      /* inlined block elements lose their width and height after first edit */
      /* save them for later use as workaround */
      var savedwidth  = $(self).width();
      var savedheight = $(self).height();

      /* if element is empty add something clickable (if requested) */
      if (!$.trim($(this).html())) {
        $(this).html(settings.placeholder);
      }

      $(this)[settings.event](function(e) {

        /* prevent throwing an exeption if edit field is clicked again */
        if (self.editing) {
          return;
        }

        /* figure out how wide and tall we are, saved width and height */
        /* are workaround for http://dev.jquery.com/ticket/2190 */
        if (0 == $(self).width()) {
          //$(self).css('visibility', 'hidden');
          settings.width  = savedwidth;
          settings.height = savedheight;
        } else {
          if (settings.width != 'none') {
            settings.width =
            settings.autowidth ? $(self).width()  : settings.width;
          }
          if (settings.height != 'none') {
            settings.height =
            settings.autoheight ? $(self).height() : settings.height;
          }
        }
        //$(this).css('visibility', '');

        /* remove placeholder text, replace is here because of IE */
        if ($(this).html().toLowerCase().replace(/;/, '') ==
        settings.placeholder.toLowerCase().replace(/;/, '')) {
          $(this).html('');
        }

        self.editing    = true;
        self.revert     = $(self).html();
        $(self).html('');

        /* create the form object */
        var form = $('<form/>');

        /* apply css or style or both */
        if (settings.cssclass) {
          if ('inherit' == settings.cssclass) {
            form.attr('class', $(self).attr('class'));
          } else {
            form.attr('class', settings.cssclass);
          }
        }

        if (settings.style) {
          if ('inherit' == settings.style) {
            form.attr('style', $(self).attr('style'));
            /* IE needs the second line or display wont be inherited */
            form.css('display', $(self).css('display'));
          } else {
            form.attr('style', settings.style);
          }
        }

        /* add main input element to form and store it in input */
      var input = element.apply(form, [settings, self]);

      /* set input content via POST, GET, given data or existing value */
      var input_content;

      if (settings.loadurl) {
        var t = setTimeout(function() {
          input.disabled = true;
          content.apply(form, [settings.loadtext, settings, self]);
        }, 100);

        var loaddata = {};
        loaddata[settings.id] = self.id;
        if ($.isFunction(settings.loaddata)) {
          $.extend(loaddata, settings.loaddata.apply(self, [self.revert, settings]));
        } else {
          $.extend(loaddata, settings.loaddata);
        }
        $.ajax({
          type : settings.loadtype,
          url  : settings.loadurl,
          data : loaddata,
          async : false,
          success: function(result) {
            window.clearTimeout(t);
            input_content = result;
            input.disabled = false;
          }
        });
      } else if (settings.data) {
        input_content = settings.data;
        if ($.isFunction(settings.data)) {
        input_content = settings.data.apply(self, [self.revert, settings]);
      }
      } else {
        input_content = self.revert;
      }
    content.apply(form, [input_content, settings, self]);

    input.attr('name', settings.name);

    /* add buttons to the form */
  buttons.apply(form, [settings, self]);

  /* add created form to self */
  $(self).append(form);

  /* attach 3rd party plugin if requested */
plugin.apply(form, [settings, self]);

/* focus to first visible form element */
$(':input:visible:enabled:first', form).focus();

/* highlight input contents when requested */
if (settings.select) {
  input.select();
}

/* discard changes if pressing esc */
input.keydown(function(e) {
  if (e.keyCode == 27) {
    e.preventDefault();
    //self.reset();
    reset.apply(form, [settings, self]);
  }
});

/* discard, submit or nothing with changes when clicking outside */
/* do nothing is usable when navigating with tab */
var t;
if ('cancel' == settings.onblur) {
  input.blur(function(e) {
    /* prevent canceling if submit was clicked */
    t = setTimeout(function() {
    reset.apply(form, [settings, self]);
  }, 500);
});
                } else if ('submit' == settings.onblur) {
                  input.blur(function(e) {
                    /* prevent double submit if submit was clicked */
                    t = setTimeout(function() {
                      form.submit();
                    }, 200);
                  });
                } else if ($.isFunction(settings.onblur)) {
                  input.blur(function(e) {
                  settings.onblur.apply(self, [input.val(), settings]);
                });
              } else {
                input.blur(function(e) {
                  /* TODO: maybe something here */
                });
              }

              form.submit(function(e) {

                if (t) {
                  clearTimeout(t);
                }

                /* do no submit */
                e.preventDefault();

                /* call before submit hook. if it returns false abort submitting */
                if (false !== submit.apply(form, [settings, self])) {

                  /* check if given target is function */
                  if ($.isFunction(settings.target)) {
                  var str = settings.target.apply(self, [input.val(), settings]);
                  $(self).html(str);
                  self.editing = false;
                  callback.apply(self, [self.innerHTML, settings]);
                  /* TODO: this is not dry */
                  if (!$.trim($(self).html())) {
                    $(self).html(settings.placeholder);
                  }
                  } else {
                    /* add edited content and id of edited element to POST */
                    var submitdata = {};
                    submitdata[settings.name] = input.val();
                    submitdata[settings.id] = self.id;
                    /* add extra data to be POST:ed */
                    if ($.isFunction(settings.submitdata)) {
                      $.extend(submitdata, settings.submitdata.apply(self, [self.revert, settings]));
                    } else {
                      $.extend(submitdata, settings.submitdata);
                    }

                    /* quick and dirty PUT support */
                    if ('PUT' == settings.method) {
                      submitdata['_method'] = 'put';
                    }

                    /* show the saving indicator */
                    $(self).html(settings.indicator);
                    $.post(settings.target, submitdata, function(str) {
                      $(self).html(str);
                      self.editing = false;
                      callback.apply(self, [self.innerHTML, settings]);
                      /* TODO: this is not dry */
                      if (!$.trim($(self).html())) {
                        $(self).html(settings.placeholder);
                      }
                    });
                  }

                }

                return false;
              });
            });

            /* privileged methods */
            this.reset = function() {
              $(self).html(self.revert);
              self.editing   = false;
              if (!$.trim($(self).html())) {
                $(self).html(settings.placeholder);
              }
            }
          });

        };


        $.editable = {
          types: {
            defaults: {
              element : function(settings, original) {
                var input = $('<input type="hidden"></input>');
                $(this).append(input);
                return(input);
              },
              content : function(string, settings, original) {
                $(':input:first', this).val(string);
              },
              reset : function(settings, original) {
                original.reset();
              },
              buttons : function(settings, original) {
                var form = this;
                if (settings.submit) {
                  /* if given html string use that */
                  if (settings.submit.match(/>$/)) {
                    var submit = $(settings.submit).click(function() {
                      if (submit.attr("type") != "submit") {
                        form.submit();
                      }
                    });
                    /* otherwise use button with given string as text */
                    } else {
                      var submit = $('<button type="submit">');
                      submit.html(settings.submit);
                    }
                    $(this).append(submit);
                  }
                  if (settings.cancel) {
                    /* if given html string use that */
                    if (settings.cancel.match(/>$/)) {
                      var cancel = $(settings.cancel);
                      /* otherwise use button with given string as text */
                      } else {
                        var cancel = $('<button type="cancel">');
                        cancel.html(settings.cancel);
                      }
                      $(this).append(cancel);

                      $(cancel).click(function(event) {
                        //original.reset();
                        if ($.isFunction($.editable.types[settings.type].reset)) {
                          var reset = $.editable.types[settings.type].reset;
                        } else {
                          var reset = $.editable.types['defaults'].reset;
                        }
                      reset.apply(form, [settings, original]);
                      return false;
                    });
                  }
                }
              },
              text: {
                element : function(settings, original) {
                  var input = $('<input></input>');
                  if (settings.width  != 'none') { input.width(settings.width);  }
                  if (settings.height != 'none') { input.height(settings.height); }
                  /* https://bugzilla.mozilla.org/show_bug.cgi?id=236791 */
                  //input[0].setAttribute('autocomplete','off');
                  input.attr('autocomplete','off');
                  $(this).append(input);
                  return(input);
                }
              },
              textarea: {
                element : function(settings, original) {
                  var textarea = $('<textarea>');
                  if (settings.rows) {
                    textarea.attr('rows', settings.rows);
                  } else {
                    textarea.height(settings.height);
                  }
                  if (settings.cols) {
                    textarea.attr('cols', settings.cols);
                  } else {
                    textarea.width(settings.width);
                  }
                  $(this).append(textarea);
                  return(textarea);
                }
              },
              select: {
                element : function(settings, original) {
                  var select = $('<select>');
                  $(this).append(select);
                  return(select);
                },
                content : function(string, settings, original) {
                  if (String == string.constructor) {
                    eval ('var json = ' + string);
                    for (var key in json) {
                      if (!json.hasOwnProperty(key)) {
                        continue;
                      }
                      if ('selected' == key) {
                        continue;
                      }
                    var option = $('<option>').val(key).append(json[key]);
                    $('select', this).append(option);
                  }
                }
                /* Loop option again to set selected. IE needed this... */
                $('select', this).children().each(function() {
                  if ($(this).val() == json['selected'] ||
                  $(this).text() == original.revert) {
                    $(this).attr('selected', 'selected');
                  };
                });
              }
            }
          },

          /* Add new input type */
          addInputType: function(name, input) {
            $.editable.types[name] = input;
          }
        };
      })(jQuery);