User:Magnus Manske/category intersection.js
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![]() | Documentation for this user script can be added at User:Magnus Manske/category intersection. |
addOnloadHook ( add_category_intersection ) ;
ci_list = Array() ;
function add_category_intersection () {
if ( mw.config.get('wgNamespaceNumber') != 0 ) return ;
catlinks = document.getElementById('catlinks') ;
if ( !catlinks ) return ;
links = catlinks.getElementsByTagName('a');
catname = "Category:" ;
for ( i = 0 ; i < links.length ; i++ ) {
t = links[i].title ;
if ( t.substr ( 0 , catname.length ) != catname ) continue ;
ci_list.push ( t.substr ( catname.length ) ) ;
}
if ( ci_list.length < 2 ) return ;
a = document.createElement ( 'a' ) ;
a.href = '#' ;
a.onclick = category_intersection_show ;
a.appendChild ( document.createTextNode ( 'Other articles in these categories' ) ) ;
catlinks.appendChild ( a ) ;
}
function category_intersection_show () {
d = document.getElementById('category_intersection_div') ;
if ( d ) return false ;
d = document.createElement ( 'div' ) ;
d.id = 'category_intersection_div' ;
d.style.border = '2px solid black' ;
d.style.background = 'white' ;
d.style.margin = '5px' ;
d.style.padding = '5px' ;
d.style.position = 'relative' ;
d.style.zindex = 99 ;
d.style.left = '200px' ;
n = ci_list.length * 9 + 20 ;
d.style.top = '-' + n + 'px' ;
h = document.createElement ( 'h2' ) ;
h.appendChild ( document.createTextNode ( 'Category intersection' ) ) ;
d.appendChild ( h ) ;
t = "" ;
for ( i = 0 ; i < ci_list.length ; i++ ) {
cb = document.createElement ( 'input' ) ;
cb.type = 'checkbox' ;
cb.name = ci_list[i] ;
cb.value = 1 ;
cb.checked = 1 ;
d.appendChild ( cb ) ;
d.appendChild ( document.createTextNode ( ci_list[i] ) ) ;
d.appendChild ( document.createElement ( 'br' ) ) ;
}
x = document.createElement ( 'input' ) ;
x.type = 'button' ;
x.value = 'Show articles in the above category intersection' ;
x.onclick = category_intersection_action ;
x.style.margin_right = '50px' ;
x.style.marginright = '50px' ;
d.appendChild ( x ) ;
x = document.createElement ( 'input' ) ;
x.type = 'button' ;
x.value = 'Cancel' ;
x.onclick = category_intersection_cancel ;
d.appendChild ( x ) ;
catlinks = document.getElementById('catlinks') ;
catlinks.appendChild ( d ) ;
return false ;
}
function category_intersection_action () {
d = document.getElementById('category_intersection_div') ;
cbs = d.getElementsByTagName('input') ;
call = Array() ;
for ( i = 0 ; i < cbs.length ; i++ ) {
if ( cbs[i].type != 'checkbox' ) continue ;
if ( !cbs[i].checked ) continue ;
call.push ( cbs[i].name.split(' ').join('_') ) ;
}
call = call.join("|") ;
url = 'http://toolserver.org/~magnus/category_intersection.php?language=en&project=wikipedia&doit=1&namespace=0&categories=' + call ;
window.location = url ;
}
function category_intersection_cancel () {
d = document.getElementById('category_intersection_div') ;
d.parentNode.removeChild ( d ) ;
}