/*******************************************************************************
 * * description: simple modal box * author: simple scrat(xiaoyuehen(at)163.com) *
 * version: 0.0.4 * last date: 2009-06-16 * 去掉 ppdrag.js, 内部实现只能在窗口内拖动
 * ************************************************************
 */

(function($) {
    $.modalbox = {
        show : function(s) {
            if (!$.modalbox._cache)
                $.modalbox._cache = [];

            s = $.extend( {}, $.modalbox.defaults, s);
            var showButton = s.showOk || s.showCancel;

            // 检测退出
            if ($.isFunction(s.onopen)) {
                if (!s.onopen())
                    return 0;
            }
            ;
            $.modalbox._viewport = null;
            $.modalbox._dragging = false;
            s.boxid = (s.boxid == null ? $.event.guid++ : s.boxid.toString());

            var h_id = s.boxid;
            if ($.modalbox._cache[h_id])
                $.modalbox.close(h_id);
            $.modalbox._cache[h_id] = s;

            if (!$.modalbox._zIndex)
                $.modalbox._zIndex = s.zIndex;
            $.modalbox._zIndex += 5;

            var bgif = ($.isFunction($.fn.bgiframe));

            var h_index = $.modalbox._zIndex;

            var h_body = '<div class="modalbox-body" _boxId="' + h_id + '"></div>';
            var h_title = s.showTitle ? '<div class="modalbox-title">'
                    + '<div class="modalbox-title-content">' + '<h3><span>' + s.title
                    + '</span></h3>' + '<a><span>X</span></a>' + '</div>' + '</div>' : "";

            var h_content = '<div class="modalbox-content"></div>';
            var h_b_ok = s.showOk ? '<input type="button" class="modalbox-button-ok" value="' + s.okBtnName + '" />'
                    : "";
            var h_b_cancel = s.showCancel ? '<input type="button" class="modalbox-button-cancel" value="' + s.cancelBtnName + '" />'
                    : "";
            var h_foot = showButton ? '<div class="modalbox-foot">' + h_b_ok + h_b_cancel + '</div>' : '';

            $("body").append($(h_body));

            var h_c_h = $(window).height();
            var h_c_w = $(window).width();
            $(".modalbox-body[_boxId=" + h_id + "]").append($(h_title + h_content + h_foot)).css("z-index", h_index)
                    .css("top", (Math.max(0, parseInt((h_c_h - s.height) / 2))) + "px").css("left",
                            (Math.max(0, parseInt((h_c_w - s.width) / 2))) + "px").width(s.width).height(s.height);
            var h_t_height = $(".modalbox-body[_boxId=" + h_id + "] .modalbox-title").height();
            var h_f_height = showButton ? $(".modalbox-body[_boxId=" + h_id + "] .modalbox-foot").height() : 0;
            var h_c_h = (s.height - h_t_height - h_f_height - 4);
            var h_c_w = (s.width - 4);

            var h_iframe = "";
            switch (s.contentType.toLowerCase()) {
            case "url":
                h_iframe = '<div class="modalbox-content-iframe"><iframe width="' + h_c_w + '" height="' + h_c_h
                        + '" id="modalbox-iframe" frameborder="0" scrolling="auto" src="' + s.content + '" /></div>';
                break;
            case "selector":
                var _c_detail = $(s.content).html();
                $.modalbox._cache[h_id]._html = _c_detail;
                $(s.content + ":eq(0)").html("");
            case "html": 
            case "text":    
            default:
                var a_scro = {
                    "no" : "overflow: hidden;",
                    "x" : "overflow-x: auto;",
                    "y" : "overflow-y: auto;",
                    "auto" : "overflow: auto;"
                };
                var s_sc = a_scro[s.scroll] || "overflow: hidden;";
                
                
                h_iframe = '<div class="modalbox-content-detail" style="width:' + h_c_w + 'px;height: ' + h_c_h
                        + 'px;' + s_sc +'">' ;
                
                if(s.contentType == 'text'){
                    h_iframe  += (s.content+ '</div>');
                    
                }else{
                    
                    h_iframe  += '</div>';
                }
                break;
            }
            ;

            $(".modalbox-body[_boxId=" + h_id + "] .modalbox-content").append(h_iframe);

            if(s.contentType == "html"){
                
                $(".modalbox-body[_boxId=" + h_id + "] .modalbox-content-detail").load(s.content,function(){
                	
                	if (s.onInitDialog) {
                		s.onInitDialog(s);
                    }
                });
               
                
            } 
            if (s.showTitle) {
                $(".modalbox-body[_boxId=" + h_id + "] .modalbox-title").find("a").click(function() {
                    $.modalbox.close(h_id);
                    return false;
                }).mousedown(function() {
                    $.modalbox.close(h_id);
                    return false;
                });
            }
            ;

            if (s.showOk) {
                $(".modalbox-body[_boxId=" + h_id + "]").find("input.modalbox-button-ok").click(function() {
                    var onok = $.modalbox._cache[h_id].onok;
                    if ($.isFunction(onok)){
                        if ( onok() ){
                             $.modalbox.close(h_id);
                        }
                    }else{
                        
                        $.modalbox.close(h_id);
                    }
                    return false;
                });
            }
            ;

            if (s.showCancel) {
                $(".modalbox-body[_boxId=" + h_id + "]").find("input.modalbox-button-cancel").click(function() {
                    var oncancel = $.modalbox._cache[h_id].oncancel;
                    if ($.isFunction(oncancel))
                        oncancel();
                    $.modalbox.close(h_id);
                    return false;
                });
            }
            ;

            if (s.draggable && s.showTitle) {
                var h_drag_it = '<div id="modalbox-drag-it"><input id="modalbox-drag-it-input" readonly="readonly" type="text" /></div>';
                if ($("#modalbox-drag-it").length == 0) {
                    $(h_drag_it).appendTo("body");
                }
                $("#modalbox-drag-it-input").width(s.width - 10);
                $(".modalbox-body[_boxId=" + h_id + "] .modalbox-title").mousedown(function(e) {
                    $.modalbox.startdrag(e, h_id);
                });
            }
            ;

            if (s.modal) {
                h_c_h = $("body").attr("clientHeight");
                h_c_w = $("body").attr("clientWidth");
                var h_cover = '<div class="modalbox-cover"></div>';
                $("body").append(h_cover);
                $(".modalbox-cover").css("z-index", s.zIndex).width(h_c_w).height(h_c_h);
                if (bgif)
                    $(".modalbox-cover").bgiframe();
            } else if (bgif)
                $(".modalbox-body[_boxId=" + h_id + "]").bgiframe();

            return h_id;
        },
        close : function(id) {
            if (typeof (id) == "undefined") {
                var last = $(".modalbox-body[_boxId]:last");
                if (last.length == 0)
                    return false;
                var id = last.attr("_boxId");
            }
            $(".modalbox-body[_boxId=" + id + "] .modalbox-title").unbind("mousedown");
            $(".modalbox-body[_boxId=" + id + "] .modalbox-title a").unbind("click");
            $(".modalbox-body[_boxId=" + id + "]").html("").remove();
            if ($.modalbox._cache[id].modal) {
                $(".modalbox-cover").html("").remove();
            }

            var onclose = $.modalbox._cache[id].onclose;
            if ($.modalbox._cache[id].contentType.toLowerCase() == "selector") {
                $($.modalbox._cache[id].content + ":eq(0)").html($.modalbox._cache[id]._html);
            }

            $.modalbox._cache[id] = undefined;
            delete $.modalbox._cache[id];

            if ($.isFunction(onclose))
                onclose();
        },
        resize : function(o, id) {
            var ojq = id ? $(".modalbox-body[_boxId=" + id + "]") : $(".modalbox-body[_boxId]:last");
            if (ojq.length == 1) {
                id = ojq.attr("_boxId");

                var s = $.modalbox._cache[id];
                if (!s)
                    return !!alert("error cache");

                var showButton = s.showCancel || s.showOk;
                var h_t_height = $(".modalbox-body[_boxId=" + id + "] .modalbox-title").height();
                var h_f_height = showButton ? $(".modalbox-body[_boxId=" + id + "] .modalbox-foot").height() : 0;
                var h_c_h = (o.h - h_t_height - h_f_height - 4);
                var h_c_w = (o.w - 4);

                $.modalbox._cache[id].width = o.w;
                $.modalbox._cache[id].height = o.h;
                ojq.width(o.w).height(o.h);

                if (s.contentType == "url") {
                    ojq.find(".modalbox-content-iframe iframe:eq(0)").width(h_c_w).height(h_c_h);
                } else {
                    ojq.find(".modalbox-content-detail:eq(0)").width(h_c_w).height(h_c_h);
                }
                return true;
            }
            return false;
        },
        moveto : function(o, id) {
            var ojq = id ? $(".modalbox-body[_boxId=" + id + "]") : $(".modalbox-body[_boxId]:last");
            var x = 0, y = 0;
            if (typeof (o) == "string") {
                if (o == "center") {
                    id = ojq.attr("_boxId");

                    var s = $.modalbox._cache[id];
                    if (!s)
                        return !!alert("error cache");

                    var h_c_h = $(window).height();
                    var h_c_w = $(window).width();
                    x = Math.max(0, parseInt((h_c_w - s.width) / 2));
                    y = Math.max(0, parseInt((h_c_h - s.height) / 2));
                }
            } else {
                x = o.x;
                y = o.y;
            }
            ojq.css("top", y + "px").css("left", x + "px");
            return true;
        },
        startdrag : function(e, id) {
            if (e.which != 1)
                return false;
            if ($.modalbox._dragging)
                return false;
            $.modalbox.mathviewport(id);
            $.modalbox._dragging = true;

            var jq = $(".modalbox-body[_boxId=" + id + "]");
            var offset = jq.offset();

            var posX;
            var posY;
            if ($.browser.msie) {
                posY = window.event.clientY + document.body.scrollTop;
                posX = window.event.clientX + document.body.scrollLeft;
            } else {
                posY = e.clientY + window.scrollY;
                posX = e.clientX + window.scrollX;
            }

            var xOffs = posX - parseInt(offset.left);
            var yOffs = posY - parseInt(offset.top);
            var hwidth = $.modalbox._cache[id].width;
            var hheight = $.modalbox._cache[id].height;

            $("#modalbox-drag-it").width(jq.width()).height(jq.height()).css("left", jq.css("left")).css("top",
                    jq.css("top")).show();
            $(document).mousemove(function(e) {
                var posX;
                var posY;
                if ($.browser.msie) {
                    posY = window.event.clientY + document.body.scrollTop;
                    posX = window.event.clientX + document.body.scrollLeft;
                } else {
                    posX = e.pageX;
                    posY = e.pageY;
                }

                var left = (posX - xOffs);
                var top = (posY - yOffs);

                // prevent horizontal move verflow width
                    if (hwidth < $.modalbox._viewport.width - 6) {
                        if (left <= 1)
                            left = 1;
                        if (left >= $.modalbox._viewport.maxLeft)
                            left = $.modalbox._viewport.maxLeft;
                        $("#modalbox-drag-it").css("left", left + "px");
                    }

                    // prevent vertical move overflow height
                    if (hheight < $.modalbox._viewport.height) {
                        if (top <= 1)
                            top = 1;
                        if (top >= $.modalbox._viewport.maxTop)
                            top = $.modalbox._viewport.maxTop;
                        $("#modalbox-drag-it").css("top", top + "px");
                    }
                }).mouseup(
                    function(e) {
                        $(".modalbox-body[_boxId=" + id + "]").css("left", $("#modalbox-drag-it").css("left")).css(
                                "top", $("#modalbox-drag-it").css("top"));

                        $("#modalbox-drag-it").hide();
                        $.modalbox._dragging = false;
                        $(document).unbind("mousemove").unbind("mouseover").unbind("mouseup");
                    }).mouseover(function(e) {
                if ($.browser.msie) {
                    window.event.cancelBubble = true;
                    window.event.returnValue = false;
                } else {
                    e.preventDefault();
                    e.stopPropagation();
                }
                return false;
            });
        },
        mathviewport : function(id) {
            $.modalbox._viewport = [];
            if (!$.browser.msie) {
                // in standards compliant mode (i.e. with a valid doctype as the
                // first line in the document)
        if (typeof document.documentElement != 'undefined'
                && typeof document.documentElement.scrollWidth != 'undefined'
                && document.documentElement.scrollWidth != 0) {
            $.modalbox._viewport.width = document.documentElement.scrollWidth;
            $.modalbox._viewport.height = document.documentElement.scrollHeight;
        }

        $.modalbox._viewport.width = Math.max($.modalbox._viewport.width, (Math.max(document.body.scrollWidth,
                document.body.clientWidth)));
        $.modalbox._viewport.height = Math.max($.modalbox._viewport.height, (Math.max(document.body.scrollHeight,
                document.body.clientHeight)));
    } else {
        // in standards compliant mode (i.e. with a valid doctype as the first
        // line in the document)
        if (typeof document.documentElement != 'undefined'
                && typeof document.documentElement.clientWidth != 'undefined'
                && document.documentElement.clientWidth != 0) {
            $.modalbox._viewport.width = document.documentElement.clientWidth;
            $.modalbox._viewport.height = document.documentElement.clientHeight;
        }
        // older versions of IE
        else {
            $.modalbox._viewport.width = document.getElementsByTagName('body')[0].clientWidth;
            $.modalbox._viewport.height = document.getElementsByTagName('body')[0].clientHeight;
        }

        $.modalbox._viewport.width = Math.max(document.body.scrollWidth, $.modalbox._viewport.width);
        $.modalbox._viewport.height = Math.max(document.body.scrollHeight, $.modalbox._viewport.height);
    }

    $.modalbox._viewport.maxLeft = $.modalbox._viewport.width - $.modalbox._cache[id].width - 6;
    $.modalbox._viewport.maxTop = $.modalbox._viewport.height - $.modalbox._cache[id].height - 6;
}
    };

    $.modalbox.defaults = {
        boxid : null,
        title : '',
        contentType : 'html', // html selector url
        content : "",
        width : 400,
        height : 200,

        draggable : true,
        modal : true,
        scroll : "y",

        showTitle : true,
        showCancel : true,
        showOk : true,

        okBtnName : '确定',
        cancelBtnName : '取消',
        zIndex : 900,
        onclose : null,
        onopen : null,
        onok : null,
        oncancel : null
    };
})(jQuery);