Restores search topic filtering to MDN; for much better search results!
// ==UserScript==
// @name MDN Search Filtering
// @namespace Violentmonkey Scripts
// @match https://developer.mozilla.org/*
// @grant none
// @version 1.5
// @author John Bussjaeger
// @description Restores search topic filtering to MDN; for much better search results!
// @homepageURL https://github.com/bussdriver/MDN-enhancer
// ==/UserScript==
var filters= ["all","api","addons","css","canvas","firefox","firefox-os","games","html","http","js","marketplace","mathml","mobile","apps","svg","webdev","standards","webext","webgl","docs","xpcom","xul"];
var localized= {//map to filters + url + url_title
'en':["All"//special case
,"APIs and DOM","Add-ons & Extensions","CSS","Canvas","Firefox","Firefox OS","Games","HTML","HTTP","JavaScript","Marketplace","MathML","Mobile","Open Web Apps","SVG","Web Development","Web Standards","WebExtensions","WebGL","Writing Documentation","XPCOM","XUL"
,"Search Topics","http://kb.mozillazine.org/Using_keyword_searches","Keyword Searching"]
};
localized= localized[ navigator.language ] || localized[ navigator.language.split('-')[0] ] || localized.en;
//existing document elements:
var form= document.getElementById('nav-main-search') || document.querySelector('form.search-form');
var input= document.getElementById('main-q');
//CSS
var style= getComputedStyle(form);
var x= document.createElement('style');
document.head.appendChild(x);
var s= '.search-results-filters {position: absolute;left:calc( '+ ( style.borderBottomLeftRadius ? style.borderBottomLeftRadius : style.paddingLeft +' + '+ style.borderLeftWidth +' + '+ style.borderLeftWidth ) +' );top: calc( '+ style.height +' - '+ style.borderBottomWidth +' );'
+`position: absolute;border:inherit;border-bottom-left-radius: inherit;border-bottom-right-radius: inherit;background-color: #fff;padding: 8px;border-top-width:0;z-index:9;margin:0;}
.search-results-filters label {display:block;padding-bottom:10px;}
.page-header {z-index:9;}
@media all and (min-width:47.9385em) and (max-width: 74.9375em) {
.page-header .main-nav {grid-row:1/1;grid-column:2/3;}
.page-header .header-search {grid-row:2/2;grid-column:2/3;}
}
@media all and (max-width:47.9375em) {
.search-results-filters{top:calc(1.6em + 22px);border:thin solid #000;}
}`;
if( style.borderTopStyle === 'none' ){
var y= getComputedStyle(input);
s+= '\n.search-results-filters {border:'+
y.borderTopStyle + ' '+ y.borderTopWidth +' '+ y.borderTopColor
+';}';
}
x.innerHTML= s;
var fset= document.createElement('fieldset');
fset.className= "search-results-filters";
fset.style.display= "none";
var legend= document.createElement('b');
legend.appendChild(document.createTextNode( localized[localized.length-3] ));// "search topics"
fset.appendChild(legend);
var checklist= [];
var all;
for(var item,check,i=0;i<filters.length;++i){
x= filters[i];
item= document.createElement('label');
check= document.createElement('input');
check.type= "checkbox";
check.name= "topic";
check.value= x;
if( (location+'').indexOf('topic='+x) >=0 ){
check.checked= true;
}
check.addEventListener('click',function(e){
e.target.focus();//click should focus so submit can work
},false);
if(x==='all'){//"all" special case
all= check;
check.name='';
if( (location+'').indexOf('topic=') === -1 ){
check.checked= true;
}
check.addEventListener('change',function(e){
if( e.target.checked ){
for(var i=checklist.length;--i>=0;){
checklist[i].checked=false;
}
}
},false);
}else{
checklist.push(check);
check.addEventListener('change',function(e){
if( e.target.checked ){
all.checked= false;
}
},false);
}
item.appendChild(check);
item.appendChild(document.createTextNode(" "+ localized[i]));
fset.appendChild(item);
}
item = document.createElement('hr');
fset.appendChild(item);
item = document.createElement('a');
item.innerText= localized[localized.length-1];// "keyword searching"
item.href= localized[localized.length-2];// url help on keyword searching
fset.appendChild(item);
form.appendChild(fset);
form.addEventListener('mouseover',function(){fset.style.display="block"},false);
form.addEventListener('mouseout',function(){fset.style.display="none"},false);
input.setAttribute('autocomplete','off');
input.addEventListener('focus',function(){fset.style.display="block"},false);