Created
January 12, 2009 00:48
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javascript: (function(doc) { | |
function addListeners(){ | |
var add = window.addEventListener; | |
add('mouseover',overHandler,false); | |
add('mouseout',outHandler,false); | |
add('click',clickHandler,false); | |
add('keypress',keyHandler,false); | |
} | |
function removeListeners(){ | |
var rm = window.removeEventListener; | |
rm('mouseover',overHandler,false); | |
rm('mouseout',outHandler,false); | |
rm('click',clickHandler,false); | |
rm('keypress',keyHandler,false); | |
} | |
addListeners(); | |
var theElm; | |
var theColor='orange'; | |
var flag=true; | |
function overHandler(e){ | |
var elm = e.target; | |
if(elm==doc.body||elm==doc.documentElement)return; | |
theElm = elm; | |
addBG(theElm); | |
} | |
function outHandler(e){ | |
removeBG(theElm); | |
} | |
function clickHandler(e){ | |
removeBG(theElm); | |
if(flag){ | |
killOtherThan(theElm); | |
flag=false; | |
theColor='deepskyblue'; | |
theElm=null; | |
}else kill(theElm); | |
/*removeListeners();*/ | |
e.preventDefault(); | |
} | |
function addBG(elm){ | |
var st = elm.style; | |
if(st.backgroundColor)st.origBG = st.backgroundColor; | |
st.backgroundColor = theColor; | |
} | |
function removeBG(elm){ | |
if(!elm)return; | |
var st = elm.style; | |
st.backgroundColor = st.origBG||''; | |
delete st.origBG; | |
} | |
function keyHandler(e){ | |
try{Hash[e.keyCode||e.which](e)}catch(e){} | |
} | |
var Hash = { | |
27:function(e){removeBG(theElm);if(flag){flag=false;theColor='deepskyblue';addBG(theElm)}else removeListeners()}/*Esc*/ | |
,38:function(e){if(theElm.parentNode!=doc.body){removeBG(theElm);addBG(theElm=theElm.parentNode);}e.preventDefault()}/*up*/ | |
,13:function(e){clickHandler(e)}/*Enter*/ | |
,115:function(e){/*s*/ | |
removeBG(theElm); | |
var html = doc.documentElement.cloneNode(true); | |
var elms = [].slice.call(html.getElementsByTagName('*')); | |
elms.forEach(function(e){ | |
var tag = e.tagName.toLowerCase(); | |
if(tag=='script'||tag=='meta'||e.display=='none'){e.parentNode.removeChild(e);} | |
if(e.src)e.src=e.src; | |
if(e.href)e.href=e.href; | |
}); | |
var xml=(new XMLSerializer).serializeToString(html); | |
location.href='data:application/octet-stream,'+encodeURIComponent(xml); | |
removeBG(theElm);removeListeners(); | |
} | |
}; | |
function killOtherThan(ele){ | |
while(ele!=doc.body){ | |
[].forEach.call(ele.parentNode.childNodes,function(e){if(e!=ele && e.style)e.style.display='none'}); | |
var st = ele.style; | |
st.width='100%'; | |
st.padding=st.margin=0; | |
ele=ele.parentNode; | |
} | |
} | |
function kill(ele){ | |
if(!ele)return; | |
ele.parentNode.removeChild(ele); | |
} | |
})(document); | |
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