User:Magnus Manske/HighlightEditSections.js

addOnloadHook ( extendededitlinks ) ;

function extendededitlinks_get_event_target ( e ) {

var targ ;

if (!e) var e = window.event;

if (e.target) targ = e.target;

else if (e.srcElement) targ = e.srcElement;

if (targ.nodeType == 3) targ = targ.parentNode; // defeat Safari bug

while ( targ.nodeType != 1 || targ.className != "editsection" ) targ = targ.parentNode ;

return targ ;

}

function extendededitlinks_is_relevant_heading ( current , compare ) {

if ( current.nodeType != 1 ) return false ;

if ( current.tagName.length != 2 ) return false ;

if ( current.tagName.substr ( 0 , 1 ) != "H" ) return false ;

if ( current.tagName> compare.tagName) return false ;

return true ;

}

function extendededitlinks_onmouseover ( e ) {

var target = extendededitlinks_get_event_target ( e ) ;

var h2 = target ;

while ( h2.nodeType != 1 || h2.tagName.substr(0,1) != "H" ) h2 = h2.parentNode;

var newdiv = document.createElement ( "div" ) ;

newdiv.style.backgroundColor = "#DDDDDD" ;

// newdiv.style.border = "1px solid black" ;

// newdiv.style.padding = "2px" ;

h2.parentNode.insertBefore ( newdiv , h2 ) ;

newdiv = h2.previousSibling ; // Unneccessary?

var x = h2 ;

do {

var y = x ;

x = x.nextSibling ;

newdiv.appendChild ( y ) ;

} while ( x && !extendededitlinks_is_relevant_heading ( x , h2 ) ) ;

}

function extendededitlinks_onmouseout ( e ) {

var target = extendededitlinks_get_event_target ( e ) ;

var h2 = target ;

while ( h2.nodeType != 1 || h2.tagName.substr(0,1) != "H" ) h2 = h2.parentNode;

var newdiv = h2 ;

while ( newdiv.nodeType != 1 || newdiv.tagName != "DIV" ) newdiv = newdiv.parentNode;

for ( var y = newdiv.firstChild ; y ; y = z ) {

z = y.nextSibling ;

newdiv.parentNode.insertBefore ( y , newdiv ) ;

}

newdiv.parentNode.removeChild ( newdiv ) ;

}

function extendededitlinks () {

var spans = document.getElementsByTagName( "span" );

for ( var i = 0 ; i < spans.length ; i++ ) {

if ( spans[i].className != "editsection" ) continue ;

var a = spans[i].getElementsByTagName("a")[0] ;

a.onmouseover = extendededitlinks_onmouseover ;

a.onmouseout = extendededitlinks_onmouseout ;

}

}