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/*
* toggle_visibility.js
* --------------------
*
* These functions enable the user to toggle the visibility of a block of
* the document, which is delimited by a <div> tag with an expected id
* attribute. The magic happens via using the id of the object passed to
* toggle visibility to make the id's used to find the other elements that
* will be operated upon.
*/
function hasClass(ele,cls) {
return ele.className.match(new RegExp('(\\s|^)'+cls+'(\\s|$)'));
}
function addClass(ele,cls) {
if (!this.hasClass(ele,cls)) ele.className += " "+cls;
}
function removeClass(ele,cls) {
if (hasClass(ele,cls)) {
var reg = new RegExp('(\\s|^)'+cls+'(\\s|$)');
ele.className=ele.className.replace(reg,' ');
}
}
function toggleVisibility(linkObj) {
var base = linkObj.getAttribute('id');
var summary = document.getElementById(base + '-summary');
var content = document.getElementById(base + '-content');
var trigger = document.getElementById(base + '-trigger');
var cookieName = base + '-savedState'
if ( hasClass(linkObj,'closed') ) {
summary.style.display = 'none';
content.style.display = 'block';
trigger.src = '_static/images/open.png';
removeClass(linkObj,'closed');
addClass(linkObj,'opened');
$.cookie(cookieName, 'opened');
} else if ( hasClass(linkObj,'opened') ) {
summary.style.display = 'block';
content.style.display = 'none';
trigger.src = '_static/images/closed.png';
removeClass(linkObj,'opened');
addClass(linkObj,'closed');
$.cookie(cookieName, 'closed');
}
return false;
}
function toggleVisibilityOnLoad(linkObj) {
var base = linkObj.getAttribute('id');
var cookieName = base + '-savedState'
var state = $.cookie(cookieName);
if ( state == 'opened' ) {
toggleVisibility(linkObj);
}
}
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