/*
 *@lhgdialog - Dialog Window v2.1.0 - Date : 2009-9-22
 *@Copyright lhgcore.js (c) 2009 By LiHuiGang Reserved
 */

J.exend({
	dialog : (function()
	{
		var twin = window.parent, cover;
		while( twin.parent && twin.parent != twin )
		{
			try{ if( twin.parent.document.domain != document.domain ) break; }
			catch(e){break;}
			twin = twin.parent;
		}
		var tdoc = twin.document;
		
		var restyle = function(el)
		{
			el.style.cssText = 'margin:0;padding:0;background-image:none;background-color:transparent;border:0;';
		};
		
		var getzi = function()
		{
			if(!J.dialog.cfg.bzi) J.dialog.cfg.bzi = 1999; return ++J.dialog.cfg.bzi;
		};
		
		var resizehdl = function()
		{
			if(!cover) return; var rel = J.idtd(tdoc) ? tdoc.documentElement : tdoc.body;
			J(cover).stcs({
				width: Math.max( rel.scrollWidth, rel.clientWidth, tdoc.scrollWidth || 0 ) - 1 + 'px',
				height: Math.max( rel.scrollHeight, rel.clientHeight, tdoc.scrollHeight || 0 ) - 1 + 'px'
			});
		};
		
		return {
			cfg : { bzi: null, opac: 0.50, bgcolor: '#fff' }, indoc : {}, infrm : {}, inwin : {},
			get : function(d)
			{
				if( !d || 'object' != typeof d || !d.id || J('#lhg_'+d.id,tdoc) ) return;
				if(d.cover) this.dcover(); else{ if(cover) cover = null; }
				
				var w = d.width || 400, h = d.height || 300, t = d.title || 'lhgdialog弹出窗口';
				var dp = J.path('lhgdialog.js'), sp = dp + 'skins/' + (d.skin||'default') + '/';
				
				var dinfo =
				{
					tit: t, page: d.page, link: d.link, html: d.html, win: window, top: twin, 
					rng: d.rang, cus: d.custom, drg: d.nodrag, rez: d.noresize, sph: sp, fot: d.nofoot
				}, cize = J.vsiz(twin), pos = J.spos(twin);
				
				var itop = d.top ? pos.y + d.top : Math.max( pos.y + ( cize.h - h - 20 ) / 2, 0 );
				var ileft = d.left ? pos.x + d.left : Math.max( pos.x + ( cize.w - w - 20 ) / 2, 0 );
				
				var dfrm = J(tdoc).crte('iframe'); restyle(dfrm);
				J(dfrm).attr({
					id: 'lhg_' + d.id, frameBorder: 0, scrolling: 'no',
					src: dp + 'lhgdialog.html', allowTransparency: 'true'
				}).stcs({
					top: itop + 'px', left: ileft + 'px', position: 'absolute',
					width: w + 'px', height: h + 'px', zIndex: getzi()
				});
				dfrm._dlgargs = dinfo; J( tdoc.body ).apch( dfrm );
			},
			
			close : function(d,c)
			{
				var dlg = ( 'object' == typeof(d) ) ? d.frameElement : J('#lhg_'+d);
				if( dlg && dlg.parentNode ){ J.rech(dlg); dlg = null; } if( c && c.parentNode ) this.hcover(c);
			},
			
			dcover : function()
			{
				cover = J(tdoc).crte('div'); restyle(cover);
				J(cover).stcs({
					position: 'absolute', zIndex: getzi(), top: '0px',
					left: '0px', backgroundColor: this.cfg.bgcolor
				}).stopac(this.cfg.opac);
				
				if( J.ie && !J.i7 )
				{
					var ifrm = J(tdoc).crte('iframe'); restyle(ifrm);
					J(ifrm).attr({
						hideFocus: true, frameBorder: 0, src: J.gtvod()
					}).stcs({
						width: '100%', height: '100%', position: 'absolute', left: '0px',
						top: '0px', filter: 'progid:DXImageTransform.Microsoft.Alpha(opacity=0)'
					});
					J(cover).apch(ifrm);
				}
				
				J(twin).aevt( 'resize', resizehdl ); resizehdl(); J(tdoc.body).apch(cover);
			},
			
			gcover : function(){ return cover; },
			hcover : function(o){ J.rech(o); cover = null; o = null; }
		};
	})()
});