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/*
* ul2finder
* written by Christian Heilmann (http://icant.co.uk)
* turns the nested list with the ID "finder" into a dynamic list
* uses the CSS classes defined in the variables
*/
function ul2finder()
{
// Define variables used and classes to be applied/removed
var i,uls,als,finder;
var parentClass='parent';
var showClass='shown';
var hideClass='hidden';
var openClass='open';
window.finderOpened = new Object();
// check if our finder list exists, if not, stop all activities
finder=document.getElementById('finder');
if(!finder){return;}
// add the class domenabled to the body
cssjs('add',document.body,'domenabled');
// loop through all lists inside finder, position and hide them
// by applying the class hidden
uls=finder.getElementsByTagName('ul');
for(i=0;i<uls.length;i++)
{
cssjs('add',uls[i],hideClass);
}
// loop through all links of inside finder
lis=finder.getElementsByTagName('li');
for(i=0;i<lis.length;i++)
{
// if the li containing the link has no nested list, skip this one
if(!lis[i].getElementsByTagName('ul')[0])
{
continue;
}
// adjust the link
var newa=document.createElement('a');
newa.href='#';
newa.appendChild(document.createTextNode(lis[i].firstChild.nodeValue));
lis[i].replaceChild(newa,lis[i].firstChild);
// otherwise apply the parent class
cssjs('add',newa,parentClass);
// setup the link
ref = lis[i].getElementsByTagName('a')[0];
ref.id = 'finder[' + i + ']';
window.finderOpened[ref.id] = false;
// if the user clicks on the link
ref.onclick=function()
{
// loop through all lists inside finder
ul = this.parentNode.getElementsByTagName('ul')[0];
for(var i=0;i<uls.length;i++)
{
// hide unconnected or closing elements
if (!connected(ul, uls[i]) || window.finderOpened[this.id] == true)
{
ref = uls[i].parentNode.getElementsByTagName('a')[0];
if (ref != this && !isparent(uls[i],ul)) {
window.finderOpened[ref.id] = false;
cssjs('add',uls[i],hideClass);
cssjs('remove',uls[i],showClass);
cssjs('remove',ref,openClass);
cssjs('add',ref,parentClass);
}
}
}
parentUls = this.parentNode.getElementsByTagName('ul');
if (window.finderOpened[this.id] == false) {
window.finderOpened[this.id] = true;
// change the current link from parent to open
// and show the current nested list
cssjs('remove',this,parentClass);
cssjs('add',this,openClass);
cssjs('add',parentUls[0],showClass);
} else {
window.finderOpened[this.id] = false;
// change the current link from open to parent
// and hide the current nested list
cssjs('add',this,parentClass);
cssjs('remove',this,openClass);
for(var u=0;u<parentUls.length;u++) {
cssjs('remove',parentUls[u],showClass);
}
}
// don't follow the real HREF of the link
return false;
}
}
/*
* isparent
* written by Silvio - s1lv10 at uol.com.br
* checks if an element is parent of another via DOM
* inspired by http://stackoverflow.com/questions/245241/jquery-ancestors-using-jquery-objects
*/
function isparent(par, child) {
if ($(child).parents().index(par) >= 0) {
return true;
}
return false;
}
/*
* connected
* written by Silvio - s1lv10 at uol.com.br
* checks if two elements are connect via DOM, either by one being
* child of parent of the another.
*/
function connected(a, b) {
if (isparent(a, b) || isparent(b, a)) {
return true;
}
return false;
}
/*
* cssjs
* written by Christian Heilmann (http://icant.co.uk)
* eases the dynamic application of CSS classes via DOM
* parameters: action a, object o and class names c1 and c2 (c2 optional)
* actions: swap exchanges c1 and c2 in object o
* add adds class c1 to object o
* remove removes class c1 from object o
* check tests if class c1 is applied to object o
* example: cssjs('swap',document.getElementById('foo'),'bar','baz');
*/
function cssjs(a,o,c1,c2)
{
switch (a){
case 'swap':
o.className=!cssjs('check',o,c1)?o.className.replace(c2,c1):o.className.replace(c1,c2);
break;
case 'add':
if(!cssjs('check',o,c1)){o.className+=o.className?' '+c1:c1;}
break;
case 'remove':
var rep=o.className.match(' '+c1)?' '+c1:c1;
o.className=o.className.replace(rep,'');
break;
case 'check':
return new RegExp('\\b'+c1+'\\b').test(o.className)
break;
}
}
}
// Check if the browser supports DOM, and start the script if it does.
if(document.getElementById && document.createTextNode)
{
window.onload=ul2finder;
}
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