User:Stmrlbs/bracketmatch.js

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// [[User:ais523/bracketmatch.js]] - Colour matching brackets in a copy of the edit box.
// By [[User:ais523]], on a suggestion by [[User:Absidy]].
// Stmrlbs - increase time

$(function(){
var p=document.getElementById('wikiPreview');
if(p==null) p=document.getElementById('viewsourcetext');
if(p)
p.innerHTML+="<div id='bm_parseres'><a href='javascript:bm_parsebrackets();'>Parse</a></div>";
try
{
var edh=document.getElementsByClassName('editHelp')[0];
if(bm_useparsebutton)
edh.innerHTML='<input id="bm_parsebutton" name="bm_parsebutton"'+
' type="button" tabindex="6" value="Show parsed" title="Show how braces parse in this text" '+
' onclick="bm_showparsed()"/>&nbsp;&nbsp;'+edh.innerHTML;
} catch(x) {}
});

function bm_parsebrackets()
{
var t=document.getElementById('wpTextbox1').value;
var a=sajax_init_object();
var p='action=expandtemplates&generatexml=1&format=json&callback=bm_callback&text='+encodeURIComponent(t);
a.open('POST', mw.config.get('wgServer')+mw.config.get('wgScriptPath')+'/api.php');
a.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
a.setRequestHeader("Content-length", p.length);
a.setRequestHeader("Connection", "close");
a.onreadystatechange=function(){bm_apirespond(a)};
a.send(p);
}

function bm_showparsed()
{
bm_parsebrackets();
return 0;
}

function bm_apirespond(a)
{
try
{
if(a.readyState==4)
eval(a.responseText);
}
catch(e)
{
document.getElementById('bm_parseres').innerHTML=
"Could not parse due to a server error. <a href='javascript:bm_parsebrackets();'>Parse</a>";
}
}

var colang;

function bm_hexdigit(n)
{
var i=Math.floor(n);
if(i<10) return i+'';
if(i==10) return 'A';
if(i==11) return 'B';
if(i==12) return 'C';
if(i==13) return 'D';
if(i==14) return 'E';
if(i==15) return 'F';
}

function bm_tohex(n)
{
var i=Math.floor(n);
return bm_hexdigit(i/16)+bm_hexdigit(i%16);
}

function bm_gencol(ang)
{
var r=Math.sin(ang)+1;
var g=Math.sin(ang+3.14159*2/3)+1;
var b=Math.sin(ang-3.14159*2/3)+1;
return bm_tohex(r*127.5)+bm_tohex(g*127.5)+bm_tohex(b*127.5);
}

function bm_callback(o)
{
var subs={"tplarg":"{{{",
"/tplarg":"}}}",
"template":"{{",
"/template":"}}",
"part":"|",
"ext":"&"+"lt;",
"/attr":"&"+"gt;",
"attr/":"&"+"gt;"};
var h=o.parsetree["*"].split("<");
var i=h.length;
var r;
var n;
var sp=0;
var st=new Array();
var col;
colang=0;
while(--i)
{
col="";
n=1;
h[i]=h[i].split(">");
h[i][0]=h[i][0].split(" ");
r=subs[h[i][0][0]];
if(r==undefined) r="";
if(r=='}}}'||r=='}}')
{
st[sp]=bm_gencol(colang);
col=st[sp];
sp++;
colang+=2.4; //golden angle in radians, approx
}
else if(r=='{{{'||r=='{{')
{
sp--;
col=st[sp];
n=2;
}
if(col!="")
r="<font color='#"+col+"' id='bm_f"+col+n+"' onclick='bm_highlight(\""+col+"\",\"black\")'>"+r+"</font>";
h[i][0]=r;
h[i]=h[i].join("");
}
document.getElementById('bm_parseres').innerHTML=
"<div style='border:1px solid blue'><tt>"+h.join("").split("\n").join("<br />")+
"</tt></div><div><a href='javascript:bm_parsebrackets();'>Parse</a></div>";
}

function bm_highlight(x,c)
{
document.getElementById('bm_f'+x+'1').style.backgroundColor=c;
document.getElementById('bm_f'+x+'2').style.backgroundColor=c;
if(c=="black")
window.setTimeout("bm_highlight('"+x+"','transparent')",20000);
}
//<pre>
//test: {{{a|b}}} {{a|b}} {{c|{{e|a=b|3=c}}|f}}<imagemap type=c>abc</imagemap>
//test: <i>f</i><nowiki>g</nowiki><includeonly>h</includeonly>
//test: <noinclude>i</noinclude> {{{{{{{{j}}}}}}}}
/* test:
{{startofline}}</pre>
*/