/*!
 * lhgcore Dialog Plugin v2.3.7
 * Date : 2010-02-06 16:15:11
 * Copyright (c) 2009 - 2010 By Li Hui Gang
 */

;(function(J) {

    var topWin = window, cover, topDoc, coDiv;
    while (topWin.parent && topWin.parent != topWin) {
        try {
            if (topWin.parent.document.domain != document.domain) break;
            //假如你不想跨frameset只跨iframe就把下面这句的注释去掉
            //if( J('frameset',topWin.parent.document).length > 0 ) break;
        }
        catch (e) { break; }
        topWin = topWin.parent;
    }
    topDoc = topWin.document;

    // 创建拖动时的层
    coDiv = J('<div id="cDiv" style="position:absolute;top:0px;left:0px;visibility:hidden;border:1px solid #000;background-color:#999;"></div>', topDoc);

    // 取窗口的zIndex值
    function getZIndex() {
        if (!J.dialog.ZIndex)
            J.dialog.ZIndex = 1999;
        return ++J.dialog.ZIndex;
    };

    // 取指定的js文件的绝对路径，返回形式为：http://www.xxx.com/xxx/xxx/
    function getMap(file) {
        var bp, fp, s = J('script'), i = 0, l = s.length;
        for (; i < l; i++) {
            if (s[i].src.indexOf(file) >= 0) {
                bp = s[i].src.substr(0, s[i].src.toLowerCase().indexOf(file));
                break;
            }
        }

        if (typeof bp !== 'undefined') {
            if (!J.browser.ie || bp.indexOf('http') === 0 ||
			(J.browser.i8 && J.dialog.isDTD(document)))
                return bp;
            else {
                fp = GetRootPath();
                fp = fp.substr(0, fp.lastIndexOf('/'));

                if (bp.indexOf('../') !== -1) {
                    while (bp.indexOf('../') >= 0) {
                        bp = bp.substr(3);
                        fp = fp.substr(0, fp.lastIndexOf('/'));
                    }
                    return fp + '/' + bp;
                }
                else if (bp.indexOf('/') === 0) {
                    fp = document.location.protocol + '//' + document.location.host;
                    return fp + bp;
                }
                else
                    return fp + '/' + bp;
            }
        }
    };
    function GetRootPath() {
        var href = window.location.href;
        var host = window.location.host;
        var s = href.substring(0, href.indexOf(host));
        var f1 = href.substring(href.indexOf(host))
        var f2 = f1.substring(f1.indexOf("/"));
        var root = f2.split("/");
        var ret = s + host + "/" + root[0];
        if (ret.endWith("/")) return ret;
        return ret + "/";
    }
    String.prototype.endWith = function(oString) {
        var reg = new RegExp(oString + "$");
        return reg.test(this);
    }  
    // 窗口大小改变时重新计算遮罩层的尺寸
    function reSizeHdl() {
        var rel = J.dialog.isDTD(topDoc) ? topDoc.documentElement : topDoc.body;

        J(cover).css({
            width: Math.max(rel.scrollWidth, rel.clientWidth, topDoc.scrollWidth || 0) - 1 + 'px',
            height: Math.max(rel.scrollHeight, rel.clientHeight, topDoc.scrollHeight || 0) - 1 + 'px'
        });
    };

    function setDefault(options) {
        // 窗口的默认值的设置
        var _default = {
            width: 400,
            height: 300,
            title: 'lhgdialog',
            win: window,  //调用控件页面的window对象
            core: getMap('lhgcore.js'),   //取lhgcore.min.js路径，用在lhgdialog.html里加载此文件
            skin: 'silvergray',    //窗口默认皮肤的目录
            drag: true,   //是否充许拖动操作
            foot: true,   //是否显示页脚
            topW: topWin,   //取顶层窗口页面（也就是控件创建的页面）的window对象
            cDiv: coDiv   // 拖动时拖动的层对象
        };

        return J.extend(_default, options || {});
    };

    J.dialog =
{
    indoc: {}, inwin: {}, innwin: {}, infrm: {}, inndoc: {},

    get: function(id, options) {
        if (!id || J('#' + id, topDoc)[0]) return;

        var r = setDefault(options);

        if (r.link && (!/\http:/.test(r.link) || r.link.indexOf(document.domain) >= 0)) {
            alert('Warning: link Parameter Value Error!');
            return false;
        }

        //是否打开遮罩层
        if (r.cover) this.dispCover();

        //是否从缓存读取内容页
        if (r.page && r.cache === false)
            r.page = (/\?/.test(r.page) ? r.page + '&' :
			    r.page + '?') + 'uuid=' + J.now();

        //插件路径，注意lhgdialog.js和lhgdialog.html一定要在同一目录下
        var dpath = getMap('lhgdialog.js');

        var view = this.client(topWin), scro = this.scroll(topWin),

		iTop = r.top ? r.top + scro.y :
			Math.max(scro.y + (view.h - r.height - 20) / 2, 0),
		iLeft = r.left ? r.left + scro.x :
			Math.max(scro.x + (view.w - r.width - 20) / 2, 0),

		dialog = J('<iframe frameborder="0" scrolling="no" allowTransparency="true" id="' + id + '" src="' + dpath +
		    'lhgdialog.html" style="top:' + iTop + 'px;left:' + iLeft + 'px;position:absolute;width:' + r.width +
			'px;height:' + r.height + 'px;z-index:' + getZIndex() + ';"></iframe>', topDoc).appendTo(topDoc.body)[0];

        dialog._dlgargs = r; dialog = null;
    },

    getsrc: function() {
        if (J.browser.ie)
            return (J.browser.i7 ? '' : "javascript:''");
        else
            return 'javascript:void(0)';
    },

    isDTD: function(doc) {
        return ('CSS1Compat' == (doc.compatMode || 'CSS1Compat'));
    },

    // 取客户端的可视页面尺寸
    client: function(win) {
        win = win || window;

        if (J.browser.ie) {
            var oSize, doc = win.document.documentElement;
            if (doc && doc.clientWidth) oSize = doc; else oSize = win.document.body;

            if (oSize)
                return { w: oSize.clientWidth, h: oSize.clientHeight };
            else
                return { w: 0, h: 0 };
        }
        else
            return { w: win.innerWidth, h: win.innerHeight };
    },

    // 取客户端的页面滚动尺寸
    scroll: function(win) {
        win = win || window;

        if (J.browser.ie) {
            var doc = win.document;
            oPos = { x: doc.documentElement.scrollLeft, y: doc.documentElement.scrollTop };
            if (oPos.x > 0 || oPos.y > 0) return oPos;

            return { x: doc.body.scrollLeft, y: doc.body.scrollTop };
        }
        else
            return { x: win.pageXOffset, y: win.pageYOffset };
    },

    // 关闭窗口函数
    close: function(dlgWin) {
        var dlg = dlgWin.frameElement;

        if (dlg) {
            dlg.src = this.getsrc();
            J(dlg).remove(); dlg = null;
        }

        if (cover)
            cover.css('display', 'none');
    },

    //显示遮罩层
    dispCover: function() {
        if (!cover) {
            cover = J('<div style="position:absolute;top:0px;left:0px;' +
				'background-color:#fff;"></div>', topDoc).css('opacity', 0.5).appendTo(topDoc.body);

            if (J.browser.ie && !J.browser.i7) {
                J('<iframe hideFocus="true" frameborder="0" src="' + this.getsrc() + '" style="width:100%;height:100%;' +
				  'top:0px;left:0px;filter:progid:DXImageTransform.Microsoft.Alpha(opacity=0)"></iframe>', topDoc).appendTo(cover[0]);
            }
        }

        J(topWin).bind('resize', reSizeHdl); reSizeHdl(); cover.css({ display: '', zIndex: getZIndex() });
    }
};

    J(window).bind('unload', function() {
        coDiv.remove(); coDiv = null;
        if (cover) cover.remove(); cover = null;
    });

})(lhgcore);