/*
	Copyright (c) 2004-2012, The Dojo Foundation All Rights Reserved.
	Available via Academic Free License >= 2.1 OR the modified BSD license.
	see: http://dojotoolkit.org/license for details
*/

//>>built
define("dojo/back",["./_base/config","./_base/lang","./sniff","./dom","./dom-construct","./_base/window","require"],function(_1,_2,_3,_4,_5,_6,_7){var _8={};1&&_2.setObject("dojo.back",_8);var _9=_8.getHash=function(){var h=window.location.hash;if(h.charAt(0)=="#"){h=h.substring(1);}return _3("mozilla")?h:decodeURIComponent(h);},_a=_8.setHash=function(h){if(!h){h="";}window.location.hash=encodeURIComponent(h);_b=history.length;};var _c=(typeof (window)!=="undefined")?window.location.href:"";var _d=(typeof (window)!=="undefined")?_9():"";var _e=null;var _f=null;var _10=null;var _11=null;var _12=[];var _13=[];var _14=false;var _15=false;var _b;function _16(){var _17=_13.pop();if(!_17){return;}var _18=_13[_13.length-1];if(!_18&&_13.length==0){_18=_e;}if(_18){if(_18.kwArgs["back"]){_18.kwArgs["back"]();}else{if(_18.kwArgs["backButton"]){_18.kwArgs["backButton"]();}else{if(_18.kwArgs["handle"]){_18.kwArgs.handle("back");}}}}_12.push(_17);};_8.goBack=_16;function _19(){var _1a=_12.pop();if(!_1a){return;}if(_1a.kwArgs["forward"]){_1a.kwArgs.forward();}else{if(_1a.kwArgs["forwardButton"]){_1a.kwArgs.forwardButton();}else{if(_1a.kwArgs["handle"]){_1a.kwArgs.handle("forward");}}}_13.push(_1a);};_8.goForward=_19;function _1b(url,_1c,_1d){return {"url":url,"kwArgs":_1c,"urlHash":_1d};};function _1e(url){var _1f=url.split("?");if(_1f.length<2){return null;}else{return _1f[1];}};function _20(){var url=(_1["dojoIframeHistoryUrl"]||_7.toUrl("./resources/iframe_history.html"))+"?"+(new Date()).getTime();_14=true;if(_11){_3("webkit")?_11.location=url:window.frames[_11.name].location=url;}else{}return url;};function _21(){if(!_15){var hsl=_13.length;var _22=_9();if((_22===_d||window.location.href==_c)&&(hsl==1)){_16();return;}if(_12.length>0){if(_12[_12.length-1].urlHash===_22){_19();return;}}if((hsl>=2)&&(_13[hsl-2])){if(_13[hsl-2].urlHash===_22){_16();}}}};_8.init=function(){if(_4.byId("dj_history")){return;}var src=_1["dojoIframeHistoryUrl"]||_7.toUrl("./resources/iframe_history.html");if(_1.afterOnLoad){console.error("dojo/back::init() must be called before the DOM has loaded. "+"Include dojo/back in a build layer.");}else{document.write("<iframe style=\"border:0;width:1px;height:1px;position:absolute;visibility:hidden;bottom:0;right:0;\" name=\"dj_history\" id=\"dj_history\" src=\""+src+"\"></iframe>");}};_8.setInitialState=function(_23){_e=_1b(_c,_23,_d);};_8.addToHistory=function(_24){_12=[];var _25=null;var url=null;if(!_11){if(_1["useXDomain"]&&!_1["dojoIframeHistoryUrl"]){console.warn("dojo/back: When using cross-domain Dojo builds,"+" please save iframe_history.html to your domain and set djConfig.dojoIframeHistoryUrl"+" to the path on your domain to iframe_history.html");}_11=window.frames["dj_history"];}if(!_10){_10=_5.create("a",{style:{display:"none"}},_6.body());}if(_24["changeUrl"]){_25=""+((_24["changeUrl"]!==true)?_24["changeUrl"]:(new Date()).getTime());if(_13.length==0&&_e.urlHash==_25){_e=_1b(url,_24,_25);return;}else{if(_13.length>0&&_13[_13.length-1].urlHash==_25){_13[_13.length-1]=_1b(url,_24,_25);return;}}_15=true;setTimeout(function(){_a(_25);_15=false;},1);_10.href=_25;if(_3("ie")){url=_20();var _26=_24["back"]||_24["backButton"]||_24["handle"];var tcb=function(_27){if(_9()!=""){setTimeout(function(){_a(_25);},1);}_26.apply(this,[_27]);};if(_24["back"]){_24.back=tcb;}else{if(_24["backButton"]){_24.backButton=tcb;}else{if(_24["handle"]){_24.handle=tcb;}}}var _28=_24["forward"]||_24["forwardButton"]||_24["handle"];var tfw=function(_29){if(_9()!=""){_a(_25);}if(_28){_28.apply(this,[_29]);}};if(_24["forward"]){_24.forward=tfw;}else{if(_24["forwardButton"]){_24.forwardButton=tfw;}else{if(_24["handle"]){_24.handle=tfw;}}}}else{if(!_3("ie")){if(!_f){_f=setInterval(_21,200);}}}}else{url=_20();}_13.push(_1b(url,_24,_25));};_8._iframeLoaded=function(evt,_2a){var _2b=_1e(_2a.href);if(_2b==null){if(_13.length==1){_16();}return;}if(_14){_14=false;return;}if(_13.length>=2&&_2b==_1e(_13[_13.length-2].url)){_16();}else{if(_12.length>0&&_2b==_1e(_12[_12.length-1].url)){_19();}}};return _8;});