/**
* @author Roger Wu
*/

(function ($) {
    var allSelectBox = [];
    var killAllBox = function (bid) {
        $.each(allSelectBox, function (i) {
            if (allSelectBox[i] != bid) {
                if (!$("#" + allSelectBox[i])[0]) {
                    $("#op_" + allSelectBox[i]).remove();
                    //allSelectBox.splice(i,1);
                } else {
                    $("#op_" + allSelectBox[i]).css({ height: "", width: "" }).hide();
                }
                $(document).unbind("click", killAllBox);
            }
        });
    };

    $.extend($.fn, {
        comboxSelect: function (options) {
            var op = $.extend({ selector: ">a" }, options);

            return this.each(function () {
                var box = $(this);
                var selector = $(op.selector, box);

                allSelectBox.push(box.attr("id"));
                $(op.selector, box).click(function () {
                    var options = $("#op_" + box.attr("id"));
                    if (options.is(":hidden")) {
                        if (options.height() > 300) {
                            options.css({ height: "300px", overflow: "scroll" });
                        }
                        var top = box.offset().top + box[0].offsetHeight - 50;
                        if (top + options.height() > $(window).height() - 20) {
                            top = $(window).height() - 20 - options.height();
                        }
                        options.css({ top: top, left: box.offset().left }).show();
                        killAllBox(box.attr("id"));
                        $(document).click(killAllBox);
                    } else {
                        $(document).unbind("click", killAllBox);
                        killAllBox();
                    }
                    return false;
                });
                $("#op_" + box.attr("id")).find(">li").comboxOption(selector, box);
            });
        },
        comboxOption: function (selector, box) {
            return this.each(function () {
                $(">a", this).click(function () {
                    var $this = $(this);
                    $this.parent().parent().find(".selected").removeClass("selected");
                    $this.addClass("selected");
                    selector.text($this.text());

                    var $input = $("select", box);
                    if ($input.val() != $this.attr("value")) {
                        $("select", box).val($this.attr("value")).trigger("refChange").trigger("change");
                    }
                });
            });
        },
        combox: function () {
            /* 清理下拉层 */
            var _selectBox = [];
            $.each(allSelectBox, function (i) {
                if ($("#" + allSelectBox[i])[0]) {
                    _selectBox.push(allSelectBox[i]);
                } else {
                    $("#op_" + allSelectBox[i]).remove();
                }
            });
            allSelectBox = _selectBox;

            return this.each(function (i) {
                var $this = $(this).removeClass("combox");
                var name = $this.attr("name");
                var value = $this.attr("value");
                var label = $("option[value=" + value + "]", $this).text();
                var ref = $this.attr("ref");
                var refUrl = $this.attr("refUrl") || "";

                var cid = $this.attr("id") || Math.round(Math.random() * 10000000);
                var select = '<div class="combox"><div id="combox_' + cid + '" class="select"' + (ref ? ' ref="' + ref + '"' : '') + '>';
                select += '<a href="javascript:" class="' + $this.attr("class") + '" name="' + name + '" value="' + value + '">' + label + '</a></div></div>';
                var options = '<ul class="comboxop" id="op_combox_' + cid + '">';
                $("option", $this).each(function () {
                    var option = $(this);
                    options += "<li><a class=\"" + (value == option[0].value ? "selected" : "") + "\" href=\"#\" value=\"" + option[0].value + "\">" + option[0].text + "</a></li>";
                });
                options += "</ul>";

                $("body").append(options);
                $this.after(select);
                $("div.select", $this.next()).comboxSelect().append($this);

                if (ref && refUrl) {
                    $this.unbind("refChange").bind("refChange", function (event) {
                        var $ref = $("#" + ref);
                        if ($ref.size() == 0) return false;
                        $.ajax({
                            type: 'GET', dataType: "json", url: refUrl.replace("{value}", $this.attr("value")), cache: false,
                            data: {},
                            success: function (json) {
                                if (!json) return;
                                var html = '';

                                $.each(json, function (i) {
                                    if (json[i] && json[i].length > 1) {
                                        html += '<option value="' + json[i][0] + '">' + json[i][1] + '</option>';
                                    }
                                });

                                var $refCombox = $ref.parents("div.combox:first");
                                $ref.html(html).insertAfter($refCombox);
                                $refCombox.remove();
                                $ref.trigger("refChange").trigger("change").combox();
                            },
                            error: DWZ.ajaxError
                        });
                    });
                }
            });
        }
    });
})(jQuery);
