/*

TO DO: Test in all browsers, clean up theme file, prepare documentation, minisite?

Uniform v1.5
Copyright © 2009 Josh Pyles / Pixelmatrix Design LLC
http://pixelmatrixdesign.com

Requires jQuery 1.4 or newer

Much thanks to Thomas Reynolds and Buck Wilson for their help and advice on this

Disabling text selection is made possible by Mathias Bynens <http://mathiasbynens.be/>
and his noSelect plugin. <http://github.com/mathiasbynens/noSelect-jQuery-Plugin>

Also, thanks to David Kaneda and Eugene Bond for their contributions to the plugin

License:
MIT License - http://www.opensource.org/licenses/mit-license.php

Usage:

$(function(){
$("select, :radio, :checkbox").uniform();
});

You can customize the classes that Uniform uses:

$("select, :radio, :checkbox").uniform({
selectClass: 'mySelectClass',
radioClass: 'myRadioClass',
checkboxClass: 'myCheckboxClass',
checkedClass: 'myCheckedClass',
focusClass: 'myFocusClass'
});

Enjoy!

*/

(function($) {
    $.uniform = {
        options: {
            selectClass: 'selector',
            radioClass: 'radio',
            checkboxClass: 'checker',
            fileClass: 'uploader',
            filenameClass: 'filename',
            fileBtnClass: 'action',
            fileDefaultText: 'No file selected',
            fileBtnText: 'Choose File',
            checkedClass: 'checked',
            focusClass: 'focus',
            disabledClass: 'disabled',
            activeClass: 'active',
            hoverClass: 'hover',
            useID: true,
            idPrefix: 'uniform',
            resetSelector: false
        },
        elements: []
    };

    if ($.browser.msie && $.browser.version < 7) {
        $.support.selectOpacity = false;
    } else {
        $.support.selectOpacity = true;
    }

    $.fn.uniform = function(options) {

        options = $.extend($.uniform.options, options);

        var el = this;
        //code for specifying a reset button
        if (options.resetSelector != false) {
            $(options.resetSelector).mouseup(function() {
                function resetThis() {
                    $.uniform.update(el);
                }
                setTimeout(resetThis, 10);
            });
        }

        function doSelect(elem) {

            var divTag = $('<div />'),
          spanTag = $('<span />');

            divTag.addClass(options.selectClass);

            if (options.useID) {
                divTag.attr("id", options.idPrefix + "-" + elem.attr("id"));
            }

            var selected = elem.find(":selected:first");
            if (selected.length == 0) {
                selected = elem.find("option:first");
            }
            spanTag.html(selected.text());

            elem.css('opacity', 0);
            elem.wrap(divTag);
            elem.before(spanTag);

            //redefine variables
            divTag = elem.parent("div");
            spanTag = elem.siblings("span");

            elem.bind({
                "change.uniform": function() {
                    spanTag.text(elem.find(":selected").text());
                    divTag.removeClass(options.activeClass);
                },
                "focus.uniform": function() {
                    divTag.addClass(options.focusClass);
                },
                "blur.uniform": function() {
                    divTag.removeClass(options.focusClass);
                    divTag.removeClass(options.activeClass);
                },
                "mousedown.uniform": function() {
                    divTag.addClass(options.activeClass);
                },
                "mouseup.uniform": function() {
                    divTag.removeClass(options.activeClass);
                },
                "click.uniform": function() {
                    divTag.removeClass(options.activeClass);
                },
                "mouseenter.uniform": function() {
                    divTag.addClass(options.hoverClass);
                },
                "mouseleave.uniform": function() {
                    divTag.removeClass(options.hoverClass);
                },
                "keyup.uniform": function() {
                    spanTag.text(elem.find(":selected").text());
                }
            });

            //handle disabled state
            if ($(elem).attr("disabled")) {
                //box is checked by default, check our box
                divTag.addClass(options.disabledClass);
            }
            $.uniform.noSelect(spanTag);

            storeElement(elem);

        }

        function doCheckbox(elem) {

            var divTag = $('<div />'),
          spanTag = $('<span />');

            divTag.addClass(options.checkboxClass);

            //assign the id of the element
            if (options.useID) {
                divTag.attr("id", options.idPrefix + "-" + elem.attr("id"));
            }

            //wrap with the proper elements
            $(elem).wrap(divTag);
            $(elem).wrap(spanTag);

            //redefine variables
            spanTag = elem.parent();
            divTag = spanTag.parent();

            //hide normal input and add focus classes
            $(elem)
      .css("opacity", 0)
      .bind({
          "focus.uniform": function() {
              divTag.addClass(options.focusClass);
          },
          "blur.uniform": function() {
              divTag.removeClass(options.focusClass);
          },
          "click.uniform": function() {
              if (!$(elem).attr("checked")) {
                  //box was just unchecked, uncheck span
                  spanTag.removeClass(options.checkedClass);
              } else {
                  //box was just checked, check span.
                  spanTag.addClass(options.checkedClass);
              }
          },
          "mousedown.uniform": function() {
              divTag.addClass(options.activeClass);
          },
          "mouseup.uniform": function() {
              divTag.removeClass(options.activeClass);
          },
          "mouseenter.uniform": function() {
              divTag.addClass(options.hoverClass);
          },
          "mouseleave.uniform": function() {
              divTag.removeClass(options.hoverClass);
          }
      });

            //handle defaults
            if ($(elem).attr("checked")) {
                //box is checked by default, check our box
                spanTag.addClass(options.checkedClass);
            }

            //handle disabled state
            if ($(elem).attr("disabled")) {
                //box is checked by default, check our box
                divTag.addClass(options.disabledClass);
            }

            storeElement(elem);

        }

        function doRadio(elem) {

            var divTag = $('<div />'),
          spanTag = $('<span />');

            divTag.addClass(options.radioClass);

            if (options.useID) {
                divTag.attr("id", options.idPrefix + "-" + elem.attr("id"));
            }

            //wrap with the proper elements
            $(elem).wrap(divTag);
            $(elem).wrap(spanTag);

            //redefine variables
            spanTag = elem.parent();
            divTag = spanTag.parent();

            //hide normal input and add focus classes
            $(elem)
      .css("opacity", 0)
      .bind({
          "focus.uniform": function() {
              divTag.addClass(options.focusClass);
          },
          "blur.uniform": function() {
              divTag.removeClass(options.focusClass);
          },
          "click.uniform": function() {
              if (!$(elem).attr("checked")) {
                  //box was just unchecked, uncheck span
                  spanTag.removeClass(options.checkedClass);
              } else {
                  //box was just checked, check span
                  $("." + options.radioClass + " span." + options.checkedClass + ":has([name='" + $(elem).attr('name') + "'])").removeClass(options.checkedClass);
                  spanTag.addClass(options.checkedClass);
              }
          },
          "mousedown.uniform": function() {
              if (!$(elem).is(":disabled")) {
                  divTag.addClass(options.activeClass);
              }
          },
          "mouseup.uniform": function() {
              divTag.removeClass(options.activeClass);
          },
          "mouseenter.uniform": function() {
              divTag.addClass(options.hoverClass);
          },
          "mouseleave.uniform": function() {
              divTag.removeClass(options.hoverClass);
          }
      });

            //handle defaults
            if ($(elem).attr("checked")) {
                //box is checked by default, check span
                spanTag.addClass(options.checkedClass);
            }
            //handle disabled state
            if ($(elem).attr("disabled")) {
                //box is checked by default, check our box
                divTag.addClass(options.disabledClass);
            }

            storeElement(elem);

        }

        function doFile(elem) {
            //sanitize input
            var $el = $(elem);

            var divTag = $('<div />'),
          filenameTag = $('<span>' + options.fileDefaultText + '</span>'),
          btnTag = $('<span>' + options.fileBtnText + '</span>');

            divTag.addClass(options.fileClass);
            filenameTag.addClass(options.filenameClass);
            btnTag.addClass(options.fileBtnClass);

            if (options.useID) {
                divTag.attr("id", options.idPrefix + "-" + $el.attr("id"));
            }

            //wrap with the proper elements
            $el.wrap(divTag);
            $el.after(btnTag);
            $el.after(filenameTag);

            //redefine variables
            divTag = $el.closest("div");
            filenameTag = $el.siblings("." + options.filenameClass);
            btnTag = $el.siblings("." + options.fileBtnClass);

            //set the size
            if (!$el.attr("size")) {
                var divWidth = divTag.width();
                //$el.css("width", divWidth);
                $el.attr("size", divWidth / 10);
            }

            //actions
            var setFilename = function() {
                var filename = $el.val();
                if (filename === '') {
                    filename = options.fileDefaultText;
                }
                else {
                    filename = filename.split(/[\/\\]+/);
                    filename = filename[(filename.length - 1)];
                }
                filenameTag.text(filename);
            };

            // Account for input saved across refreshes
            setFilename();

            $el
      .css("opacity", 0)
      .bind({
          "focus.uniform": function() {
              divTag.addClass(options.focusClass);
          },
          "blur.uniform": function() {
              divTag.removeClass(options.focusClass);
          },
          "mousedown.uniform": function() {
              if (!$(elem).is(":disabled")) {
                  divTag.addClass(options.activeClass);
              }
          },
          "mouseup.uniform": function() {
              divTag.removeClass(options.activeClass);
          },
          "mouseenter.uniform": function() {
              divTag.addClass(options.hoverClass);
          },
          "mouseleave.uniform": function() {
              divTag.removeClass(options.hoverClass);
          }
      });

            // IE7 doesn't fire onChange until blur or second fire.
            if ($.browser.msie) {
                // IE considers browser chrome blocking I/O, so it
                // suspends tiemouts until after the file has been selected.
                $el.bind('click.uniform.ie7', function() {
                    setTimeout(setFilename, 0);
                });
            }
            else {
                // All other browsers behave properly
                $el.bind('change.uniform', setFilename);
            }

            //handle defaults
            if ($el.attr("disabled")) {
                //box is checked by default, check our box
                divTag.addClass(options.disabledClass);
            }

            $.uniform.noSelect(filenameTag);
            $.uniform.noSelect(btnTag);
            storeElement(elem);

        }

        $.uniform.restore = function(elem) {
            $(elem).each(function() {
                if ($(this).is(":checkbox")) {
                    //unwrap from span and div
                    $(this).unwrap().unwrap();
                } else if ($(this).is("select")) {
                    //remove sibling span
                    $(this).siblings("span").remove();
                    //unwrap parent div
                    $(this).unwrap();
                } else if ($(this).is(":radio")) {
                    //unwrap from span and div
                    $(this).unwrap().unwrap();
                } else if ($(this).is(":file")) {
                    //remove sibling spans
                    $(this).siblings("span").remove();
                    //unwrap parent div
                    $(this).unwrap();
                }

                //unbind events
                $(this).unbind(".uniform");

                //reset inline style
                $(this).css("opacity", "1");

                //remove item from list of uniformed elements
                var index = $.inArray($(elem), $.uniform.elements);
                $.uniform.elements.splice(index, 1);
            });
        }

        function storeElement(elem) {
            //store this element in our global array
            elem = $(elem).get();
            if (elem.length > 1) {
                $.each(elem, function(i, val) {
                    $.uniform.elements.push(val);
                });
            } else {
                $.uniform.elements.push(elem);
            }
        }

        //noSelect v1.0
        $.uniform.noSelect = function(elem) {
            function f() {
                return false;
            };
            $(elem).each(function() {
                this.onselectstart = this.ondragstart = f; // Webkit & IE
                $(this)
        .mousedown(f) // Webkit & Opera
        .css({ MozUserSelect: 'none' }); // Firefox
            });
        };

        $.uniform.update = function(elem) {
            if (elem == undefined) {
                elem = $($.uniform.elements);
            }
            //sanitize input
            elem = $(elem);

            elem.each(function() {
                //do to each item in the selector
                //function to reset all classes
                var $e = $(this);

                if ($e.is("select")) {
                    //element is a select
                    var spanTag = $e.siblings("span");
                    var divTag = $e.parent("div");

                    divTag.removeClass(options.hoverClass + " " + options.focusClass + " " + options.activeClass);

                    //reset current selected text
                    spanTag.html($e.find(":selected").text());

                    if ($e.is(":disabled")) {
                        divTag.addClass(options.disabledClass);
                    } else {
                        divTag.removeClass(options.disabledClass);
                    }

                } else if ($e.is(":checkbox")) {
                    //element is a checkbox
                    var spanTag = $e.closest("span");
                    var divTag = $e.closest("div");

                    divTag.removeClass(options.hoverClass + " " + options.focusClass + " " + options.activeClass);
                    spanTag.removeClass(options.checkedClass);

                    if ($e.is(":checked")) {
                        spanTag.addClass(options.checkedClass);
                    }
                    if ($e.is(":disabled")) {
                        divTag.addClass(options.disabledClass);
                    } else {
                        divTag.removeClass(options.disabledClass);
                    }

                } else if ($e.is(":radio")) {
                    //element is a radio
                    var spanTag = $e.closest("span");
                    var divTag = $e.closest("div");

                    divTag.removeClass(options.hoverClass + " " + options.focusClass + " " + options.activeClass);
                    spanTag.removeClass(options.checkedClass);

                    if ($e.is(":checked")) {
                        spanTag.addClass(options.checkedClass);
                    }

                    if ($e.is(":disabled")) {
                        divTag.addClass(options.disabledClass);
                    } else {
                        divTag.removeClass(options.disabledClass);
                    }
                } else if ($e.is(":file")) {
                    var divTag = $e.parent("div");
                    var filenameTag = $e.siblings(options.filenameClass);
                    btnTag = $e.siblings(options.fileBtnClass);

                    divTag.removeClass(options.hoverClass + " " + options.focusClass + " " + options.activeClass);

                    filenameTag.text($e.val());

                    if ($e.is(":disabled")) {
                        divTag.addClass(options.disabledClass);
                    } else {
                        divTag.removeClass(options.disabledClass);
                    }
                }
            });
        }

        return this.each(function() {
            if ($.support.selectOpacity) {
                var elem = $(this);

                if (elem.is("select")) {
                    //element is a select
                    if (elem.attr("multiple") != true) {
                        //element is not a multi-select
                        if (elem.attr("size") == undefined || elem.attr("size") <= 1) {
                            doSelect(elem);
                        }
                    }
                } else if (elem.is(":checkbox")) {
                    //element is a checkbox
                    doCheckbox(elem);
                } else if (elem.is(":radio")) {
                    //element is a radio
                    doRadio(elem);
                } else if (elem.is(":file")) {
                    //element is a file upload
                    doFile(elem);
                }

            }
        });
    };
})(jQuery);