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// Haddock JavaScript utilities
var rspace = /\s\s+/g,
rtrim = /^\s+|\s+$/g;
function spaced(s) { return (" " + s + " ").replace(rspace, " "); }
function trim(s) { return s.replace(rtrim, ""); }
function hasClass(elem, value) {
var className = spaced(elem.className || "");
return className.indexOf( " " + value + " " ) >= 0;
}
function addClass(elem, value) {
var className = spaced(elem.className || "");
if ( className.indexOf( " " + value + " " ) < 0 ) {
elem.className = trim(className + " " + value);
}
}
function removeClass(elem, value) {
var className = spaced(elem.className || "");
className = className.replace(" " + value + " ", " ");
elem.className = trim(className);
}
function toggleClass(elem, valueOn, valueOff, bool) {
if (bool == null) { bool = ! hasClass(elem, valueOn); }
if (bool) {
removeClass(elem, valueOff);
addClass(elem, valueOn);
}
else {
removeClass(elem, valueOn);
addClass(elem, valueOff);
}
return bool;
}
function makeClassToggle(valueOn, valueOff)
{
return function(elem, bool) {
return toggleClass(elem, valueOn, valueOff, bool);
}
}
toggleShow = makeClassToggle("show", "hide");
toggleCollapser = makeClassToggle("collapser", "expander");
function toggleSection(id)
{
var b = toggleShow(document.getElementById("section." + id));
toggleCollapser(document.getElementById("control." + id), b);
rememberCollapsed(id);
return b;
}
var collapsed = {};
function rememberCollapsed(id)
{
if(collapsed[id])
delete collapsed[id]
else
collapsed[id] = true;
var sections = [];
for(var i in collapsed)
{
if(collapsed.hasOwnProperty(i))
sections.push(i);
}
// cookie specific to this page; don't use setCookie which sets path=/
document.cookie = "collapsed=" + escape(sections.join('+'));
}
function restoreCollapsed()
{
var cookie = getCookie("collapsed");
if(!cookie)
return;
var ids = cookie.split('+');
for(var i in ids)
{
if(document.getElementById("section." + ids[i]))
toggleSection(ids[i]);
}
}
function setCookie(name, value) {
document.cookie = name + "=" + escape(value) + ";path=/;";
}
function clearCookie(name) {
document.cookie = name + "=;path=/;expires=Thu, 01-Jan-1970 00:00:01 GMT;";
}
function getCookie(name) {
var nameEQ = name + "=";
var ca = document.cookie.split(';');
for(var i=0;i < ca.length;i++) {
var c = ca[i];
while (c.charAt(0)==' ') c = c.substring(1,c.length);
if (c.indexOf(nameEQ) == 0) {
return unescape(c.substring(nameEQ.length,c.length));
}
}
return null;
}
function addMenuItem(html) {
var menu = document.getElementById("page-menu");
if (menu) {
var btn = menu.firstChild.cloneNode(false);
btn.innerHTML = html;
menu.appendChild(btn);
}
}
function styles() {
var i, a, es = document.getElementsByTagName("link"), rs = [];
for (i = 0; a = es[i]; i++) {
if(a.rel.indexOf("style") != -1 && a.title) {
rs.push(a);
}
}
return rs;
}
function addStyleMenu() {
var as = styles();
var i, a, btns = "";
for(i=0; a = as[i]; i++) {
btns += "<li><a href='#' onclick=\"setActiveStyleSheet('"
+ a.title + "'); return false;\">"
+ a.title + "</a></li>"
}
if (as.length > 1) {
var h = "<div id='style-menu-holder'>"
+ "<a href='#' onclick='styleMenu(); return false;'>Style ▾</a>"
+ "<ul id='style-menu' class='hide'>" + btns + "</ul>"
+ "</div>";
addMenuItem(h);
}
}
function setActiveStyleSheet(title) {
var as = styles();
var i, a, found;
for(i=0; a = as[i]; i++) {
a.disabled = true;
// need to do this always, some browsers are edge triggered
if(a.title == title) {
found = a;
}
}
if (found) {
found.disabled = false;
setCookie("haddock-style", title);
}
else {
as[0].disabled = false;
clearCookie("haddock-style");
}
styleMenu(false);
}
function resetStyle() {
var s = getCookie("haddock-style");
if (s) setActiveStyleSheet(s);
}
function styleMenu(show) {
var m = document.getElementById('style-menu');
if (m) toggleShow(m, show);
}
function pageLoad() {
addStyleMenu();
resetStyle();
restoreCollapsed();
}
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